Brennstoffzellensystem, Brennstoffzellenfahrzeug und Steuerverfahren für ein Brennstoffzellensystem

Brennstoffzellensystem, das in einem Brennstoffzellenfahrzeug (10) befestigt ist, wobei das Brennstoffzellensystem aufweist:eine Brennstoffzelle (100);einen Kühlsystemkreislauf (300), der einen Kühlflüssigkeitsversorgungspfad (310) enthält, der dazu eingerichtet ist, der Brennstoffzelle (100) eine Kühlflüssigkeit zuzuführen, einen Radiator (350), der dazu eingerichtet ist, die Kühlflüssigkeit abzukühlen, einen Radiatorventilator (360) und eine Kühlflüssigkeitspumpe (370), die in dem Kühlflüssigkeitsversorgungspfad (310) angeordnet ist, um der Brennstoffzelle (100) Kühlflüssigkeit zuzuführen;eine Steuervorrichtung (200); undein Geschwindigkeitsmessgerät (120), das dazu eingerichtet ist, eine Geschwindigkeit des Brennstoffzellenfahrzeugs (10) zu erlangen, wobeidie Steuervorrichtung (200) in der Lage ist, eine erste Kühlsteuerung durchzuführen, die einen oberen Grenzwert des Antriebsausmaßes des Radiatorventilators (360) gemäß der Geschwindigkeit des Brennstoffzellenfahrzeugs (10) festlegt ...

Fuel cell system

Die vorliegende Erfindung betrifft ein Brennstoffzellensystem umfassend eine Brennstoffversorgungseinheit, zumindest eine Hochtemperaturbrennstoffzelle mit einer Kathode und einer Anode und einem zwischen Kathode und Anode angeordneten Elektrolyt. Die Kathode weist eine Kathodenzuleitung und die Anode eine Anodenzuleitung auf, wobei die Anode über die Anodenzuleitung mit der Brennstoffversorgungseinheit strömungsverbunden ist. Weiterhin ist in der Anodenzuleitung eine Reformierungsvorrichtung angeordnet. Ferner ist eine Anodenabgasleitung zur Ableitung zumindest von Anodenabgas aus der Anode vorgesehen. Das Brennstoffzellensystem weist einen Abgaswärmetauscher zur Kühlung von Abgas und eine Rezirkulationsfördereinrichtung zum Rückführen von Anodenabgas zu der Reformierungsvorrichtung auf. Dabei sind die Rezirkulationsfördereinrichtung und der Abgaswärmetauscher zur jeweiligen Kühlung über einen gemeinsamen Kühlkreislauf fluidkommunizierend miteinander verbunden, der einen zentralen Kühlfluidspeicher ...

FUEL CELL SYSTEM AND METHOD OF CONTROLLING THE SAME

A fuel cell system of the present invention includes: a fuel cell (1) supplied with fuel gas and oxidizing gas to generate electricity; a fuel gas supply unit supplying the fuel gas to the fuel cell (1); an oxidizing gas supply unit supplying the oxidizing gas to the fuel cell (1); an aftercooler (7) cooling the oxidizing gas supplied to the fuel cell (1) by heat exchange with a coolant; an oxidizing gas temperature detector (16, 17) detecting temperature of the oxidizing gas; and a coolant circulation controller (21a) starting circulation of the coolant when the detected temperature of the oxidizing gas exceeds a predetermined value. The predetermined value is set to a value of not higher than a minimum electricity generation temperature of the fuel cell (1), and a circulation timing and flow rate of the coolant for the aftercooler (7) are controlled such that the supplied oxidizing gas does not become cold. This enables the fuel cell (1) to generate electricity at cold start-up.

FUEL CELL SYSTEM AND METHOD OF CONTROLLING FUEL CELL SYSTEM

A fuel cell stack includes a heat exchange unit that performs heat exchange between a gas mixture containing source hydrogen and a circulating gas and cooling water used for controlling the temperature of the fuel cell stack. A system controller adjusts the temperature of the cooling water by controlling a temperature control unit on the basis of the temperature of source hydrogen flowing into a junction at which the source hydrogen and a circulating gas are mixed such that the temperature of a source/recirculated hydrogen mixture that is mixed at the junction and that is supplied to the fuel cell stack is kept within a managed temperature range.

CONTROL DEVICE FOR FUEL CELL SYSTEM AND CONTROL METHOD FOR FUEL CELL SYSTEM

A control device of fuel cell system includes an anode gas circulation flow rate control unit configured to control the anode gas circulation flow rate on the basis of the wet/dry state of the electrolyte membrane detected by the wet/ dry state detecting unit, a priority setting unit configured to set priority levels of a normal manipulation to a plurality of physical quantities manipulated by the wet/ dry state control unit, and the anode gas circulation flow rate control unit includes an anode gas circulation flow rate limiting unit configured to limit a change rate per unit time of the anode gas circulation flow rate during a transient operation for changing the wet/dry state of the electrolyte membrane, and a control quantity compensating unit configured to, if the change rate is limited, compensate an insufficiency in a control quantity of the wet/ dry state due to the limitation of the anode gas circulation flow rate, the compensation being carried out by manipulating a physical quantity ...

FULL CELL POWER SYSTEMS, DIRECT CURRENT VOLTAGE CONVERTERS, FUEL CELL POWER GENERATION METHODS, AND POWER CONDITIONING METHODS

Fuel cell power systems, direct current voltage converters, fuel cell power generation methods and power conditioning methods are provided. According to one aspect of the invention, a fuel cell power system (10) includes a plurality of terminals adapted to couple with a load (22); a fuel cell stock, comprising fuel cell cartridges (14), and configured to convert chemical energy into direct current electrical energy having a variable potential; and a converter being configured to convert the electrical energy from the fuel cell into direct current electrical energy having a substantially constant voltage potential.

COLD START FUEL CELL SYSTEM

Voltage rising detection unit detects a voltage rising condition of a fuel cell stack after the supply of reactant gas to the fuel cell stack is started. A control unit determines an internal state of the fuel cell stack on the basis of the detected voltage rising condition of the fuel cell stack, and then decides a subsequent operation of the fuel cell stack in accordance with the determination. This makes it possible to minimize deterioration of the fuel cell stack which is caused by generating power continuously in an unsuitable state.

FUEL CELL SYSTEM, FUEL CELL VEHICLE AND CONTROL METHOD OF FUEL CELL SYSTEM

A fuel cell system that is mounted on a fuel cell vehicle comprises: a fuel cell; a cooling system circuit including a cooling liquid supply path that is configured to supply a cooling liquid to the fuel cell, a radiator that is configured to cool down the cooling liquid, a radiator fan, and a cooling liquid pump that is provided in the cooling liquid supply path to feed the cooling liquid to the fuel cell; a controller; and a speedometer that is configured to obtain a speed of the fuel cell vehicle, wherein the controller is capable of performing a first cooling control that sets an upper limit value of driving amount of the radiator fan according to the speed of the fuel cell vehicle and regulates a flow rate of the cooling liquid pump or the driving amount of the radiator fan under the upper limit value of the driving amount of the radiator, so as to cool down the fuel cell.

FUEL CELL SYSTEM AND CONTROL METHOD FOR THE SAME

A fuel cell system comprises: a fuel cell; an air supplier; an air passage which is interconnected with the fuel cell and through which air supplied from the air supplier flows; a bleed passage which is branched from an air passage upstream of the fuel cell and joined to an air passage downstream of the fuel cell and through which part of the air supplied by the air supplier flows so as to bypass the fuel cell; a bleed valve which is provided in the bleed passage and which adjusts the amount of air which flows through the bleed passage; an air supplier control unit which controls the air supplier so that a specific amount of air is supplied; a humidity reduction determination unit which determines whether or not it is necessary to reduce the humidity of the fuel cell; a bleed amount control unit which reduces the degree of opening of the bleed valve when a reduction in the humidity of the fuel cell is necessary.

FUEL CELL SYSTEM AND FUEL CELL SYSTEM CONTROL METHOD

Operation method for polymer electrolytic fuel cell

연료 전지 시스템의 제어 장치 및 연료 전지 시스템의 제어 방법

... 연료 전지 시스템의 제어 장치는, 습윤 상태 검출부에 의해 검출한 전해질막의 습윤 상태에 기초하여, 애노드 가스 순환 유량을 제어하는 애노드 가스 순환 유량 제어부와, 습윤 상태 제어부에 의해 조작되는 복수의 물리량에 대하여 정상적인 조작의 우선 순위를 설정하는 우선 순위 설정부를 구비하고, 애노드 가스 순환 유량 제어부는, 전해질막의 습윤 상태를 변화시키는 과도 운전 시에 있어서, 애노드 가스 순환 유량의 단위 시간당의 변화율을 제한하는 애노드 가스 순환 유량 제한부와, 애노드 가스 순환 유량 제한부에 의해 애노드 가스 순환 유량의 변화율이 제한되어 있는 경우에는, 애노드 가스 순환 유량의 제한에 의해 부족한 습윤 상태의 제어량분에 대해서, 우선 순위 설정부에 의해 설정된 애노드 가스 순환 유량보다 정상적인 조작의 우선 순위가 낮은 물리량의 조작으로 보완하는 제어량 보완부를 포함한다.

FUEL CELL SYSTEM AND ITS TEMPERATURE ADJUSTING METHOD

FUEL CELL SYSTEM

A cathode gas cooling apparatus (50) includes a first internal flow path (63) through which cathode gas flows, a second internal flow path (66) through which water discharged from a fuel cell (10) is supplied, and a heat exchanger (60) for cooling the cathode gas flowing through the first internal flow path (63) by latent heat of vaporization of water flowing through the second internal flow path (66). The first internal flow path (63) and the second internal flow path (66) are formed become independent flow paths in the heat exchanger (60), so that steam generated in the second internal flow path (66) by the heat exchange with the cathode gas flowing through the first internal flow path is not introduced into the first inner flow path (63). COPYRIGHT KIPO 2018 ...

FUEL CELL SYSTEM

A fuel cell system and method of controlling a fuel cell system capable of preventing deterioration in performance when the system reinitiates a normal operation from an idle stop state. For a predetermined time after reinitiating the supply of fuel gas and oxidant gas from the idle stop state, discharge of off-gas occurs and the cessation of fuel gas and oxidant gas supply is prohibited.

FUEL CELL SYSTEM

A fuel cell system includes: a fuel cell heating medium circulation circuit for circulating a fuel cell heating medium that exchanges heat with a fuel cell; a condensing coolant circulation circuit for circulating a condensing coolant that exchanges heat with at least one of a fuel off -gas discharged from a fuel electrode, an oxidant off-gas discharged from an oxidant electrode, and a combustion exhaust gas discharged from a reformer; a hot water storage tank for storing stored hot water; and a stored hot water circulation circuit for circulating the stored hot water, which exchanges heat with the condensing coolant circulating through the condensing coolant circulation circuit and the fuel cell heating medium circulating through the fuel cell heating medium circulation circuit. A fuel gas heat exchanger in which the fuel cell heating medium and the fuel gas supplied to the fuel electrode exchange heat is disposed on the fuel cell heating medium circulation circuit.

FUEL CELL DEVICE AND RELATED CONTROL METHOD

A fuel cell device and related control method are disclosed wherein a water tank 5 is disposed downstream of a fuel cell stack 1 and a hot medium flow passage 25 is formed on an outer periphery of the water tank 5 to pass antifreeze solution. During cold start-up, a three-way vale 13 is switched over to allow antifreeze solution to flow through the fuel cell stack 1 and a heat exchanger 17, by which antifreeze solution is heated and supplied to the fuel cell stack 1 and the water tank 5 to heat these components, whereby the water tank 5 is heated to thaw frozen ice.

Control system for a sealed coolant flow field fuel cell power plant having a water reservoir

The system (10) controls at least one of a pressure of the reactant streams (16A, 16B) within at least one of an anode flow field (28) and a cathode flow field (36), a flow rate of the reactant streams (16A, 16B) flowing through the anode and/or cathode flow fields (26, 28), a temperature of a coolant fluid passing through a sealed coolant flow field (44), and a flow rate of the coolant fluid; so that water (14) moves from a water reservoir (18A, 18B) into the reactant stream (16A, 16B) whenever power generated by the fuel cell (20) is between about 80% and about 100% of a maximum fuel cell power output, and so that water (14) moves from the reactant stream (16A, 16B) into the water reservoir (18A, 18B) whenever fuel cell power is less than about 75% of the maximum power output.

CATALYTIC HEATERS FOR EVAPORATIVELY COOLED FUEL CELL SYSTEMS

Disclosed herein are aspects of fuel cell systems (10) and methods having a fuel cell assembly (20); a coolant module (30) configured to provide coolant to the fuel cell assembly, the coolant module comprising a coolant storage (32) tank fluidly connected to the fuel cell assembly (20) and a coolant tank heater comprising one or more catalytic heating elements (55) arranged proximate to the coolant storage tank (32) to heat the coolant, wherein the one or more catalytic heating elements (55) includes a catalyst material that combusts hydrogen and ignites spontaneously.

Coolant storage tank

A coolant storage tank (1) for storing coolant in a fuel cell system (2), the coolant storage tank comprising a plurality of individually controllable heater elements (7, 8a, 8b). A coolant storage tank comprising a first heater element (7) located at a base of the coolant storage tank and a second heater element (8a) is also disclosed. A coolant storage tank comprising a first coolant storage compartment (50) in fluid communication with a second coolant storage compartment (51), the first coolant storage compartment including at least a first heater element (54) and wherein the second coolant storage compartment is unheated is also disclosed. A method of melting frozen coolant in a coolant storage tank is also disclosed.

Catalytic heaters for evaporatively cooled fuel cell systems

A coolant module comprises one or more catalytic heating elements 55 arranged proximate to a coolant storage tank 32 to supply heat to a coolant 40, wherein the one or more heating elements includes a catalyst material that combusts hydrogen on contact. A fuel cell system (10, figure 1A) comprises a coolant tank heater containing one or more catalytic heating elements (55) arranged in a heat exchange relationship with a coolant storage tank (32) having inner and outer walls fluidly connected to a fuel cell assembly (20). The one or more catalytic heating elements may be mounted or fixed on portions of the inner wall or on portions of the outer wall. The catalyst material may comprise a platinum group metal or alloy and preferably comprises palladium. Preferably the catalyst material provides combustion of hydrogen gas at temperatures of -30 degrees C or below. The coolant module of the invention may be used to thaw frozen water that may cause blockages hindering the supply of coolant or ...

Fuel cell and coolant storage

COMBINED FORCE HEAT PLANT

Fuel cell system

Die vorliegende Erfindung betrifft ein Brennstoffzellensystem umfassend eine Brennstoffversorgungseinheit, zumindest eine Hochtemperaturbrennstoffzelle mit einer Kathode und einer Anode und einem zwischen Kathode und Anode angeordneten Elektrolyt. Die Kathode weist eine Kathodenzuleitung und die Anode eine Anodenzuleitung auf, wobei die Anode über die Anodenzuleitung mit der Brennstoffversorgungseinheit strömungsverbunden ist. Weiterhin ist in der Anodenzuleitung eine Reformierungsvorrichtung angeordnet. Ferner ist eine Anodenabgasleitung zur Ableitung zumindest von Anodenabgas aus der Anode vorgesehen. Das Brennstoffzellensystem weist einen Abgaswärmetauscher zur Kühlung von Abgas und eine Rezirkulationsfördereinrichtung zum Rückführen von Anodenabgas zu der Reformierungsvorrichtung auf. Dabei sind die Rezirkulationsfördereinrichtung und der Abgaswärmetauscher zur jeweiligen Kühlung über einen gemeinsamen Kühlkreislauf fluidkommunizierend miteinander verbunden, der einen zentralen Kühlfluidspeicher ...

GAS CELL SYSTEM

Pressure control method for anode of fuel cell, involves regulating pressure feedback control unit and pressure feeding unit to match pressure in anode to fixed set point

The method involves feeding hydrogen (2) to the anode and air or oxygen (3) to a cathode (5) by a pressure feeding unit (33). A pressure output unit (34) is opened for the periodic removal of a mixture (28) to feed the hydrogen and to send the mixture over an outlet conduit (29) to a reservoir (30). The pressure in the reservoir matches the pressure of the hydrogen being fed, after which the pressure output unit is closed. A pressure feedback control unit (37) and the pressure feeding unit are regulated in a way that the pressure in the anode is matched to a fixed set point (40).

ELECTROCHEMICAL ENGINE

An electrochemical engine for a vehicle comprises a storage tank containing hydrogen-retention material which reversibly takes-up and stores hydrogen at a hydrogen-storage temperature and releases it upon heating to a release temperature. A fuel cell stack using the released hydrogen produces electricity and heat by-product. A primary coolant flow circuit extends from a radiator, through the fuel cell stack and the storage tank, and back to the radiator, and has a coolant-distribution valve intermediate the fuel cell stack and the storage tank. A bypass coolant flow line extends from the coolant-distribution valve to the radiator. During operation, the heat by-product of the fuel cell stack is transferred via the primary coolant flow circuit to the storage tank for heating the hydrogen- retention material to release hydrogen for fueling the fuel cell stack. The electrochemical engine further comprises a heat generator within a superheater coolant flow loop having a bypass valve intermediate ...

FUEL-CELL VEHICLE

A fuel-cell vehicle includes a fuel cell and a secondary battery. A circulation flow passage causes a coolant to circulate between the fuel cell and a radiator. A bypass flow passage passes through the secondary battery. One end of the bypass flow passage is connected to an upstream side of the radiator and the other end thereof is connected to a downstream side of the radiator of the circulation flow passage. A controller switches a switching valve such that the coolant flows to the radiator side when a coolant temperature is higher than a predetermined temperature threshold value, and switches the switching valve such that the coolant flows to the bypass flow passage side when the coolant temperature is lower than the temperature threshold value.

FUEL CELL FLOW FIELD DESIGN FOR THERMAL MANAGEMENT

Fuel cell assemblies comprising at least one thermally compensated coolant channel are provided. The thermally compensated coolant channel has a cross-sectional area that decreases in the coolant flow direction along at least a portion of the channel length. In some embodiments, such thermally compensated coolant channels can be used to provide substantially uniform heat flux, and substantially isothermal conditions, in fuel cells operating with substantially uniform current density.

FUEL CELL IN-PLANE STATE ESTIMATING SYSTEM AND FUEL CELL IN-PLANE STATE ESTIMATING METHOD

The membrane electrode assembly is virtually divided into a plurality of small regions arranged along the flow of reactive gases. A current density 132 and a transfer amount 136 of water in an n-1 region are calculated referring to the maps defining a relationship between a power generation environment and a current density and a relationship between the power generation environment and a transfer amount of water, on the basis of power generation environments 122 and 128 transmitted from a pre-stage. Consumption amounts 138 and 146 of the reactive gases are calculated from the current density 132. A power generation environment transmitted to an n region is calculated by reflecting the consumption amounts 138 and 146 of the reactive gases and the transfer amount 136 of water (140, 144, 148, 150). Power generation environments and power generation states are sequentially predicted as to all the small regions.

FUEL CELL WITH WET STATE VALVE CONTROL

A fuel cell system includes a fuel cell, an air supplier, an air passage connected to the fuel cell, air supplied from the air supplier flowing in the air passage, a bleed passage branched off from the air passage on a side upstream of the fuel cell and joining the air passage on a side downstream of the fuel cell, part of the air supplied by the air supplier flowing in the bleed passage in such a manner as to circumvent the fuel cell, a bleed valve provided in the bleed passage, the bleed valve regulating the amount of air flowing in the bleed passage, an air supplier control unit which controls the air supplier to supply a predetermined amount of air, a wetness reduction determination unit which determines whether or not it is necessary to reduce a degree of wetness of the fuel cell, and a bleed amount control unit which reduces an opening of the bleed valve when the degree of wetness of the fuel cell needs to be reduced.

FUEL CELL SYSTEM

A fuel cell system is provided with: a refrigerant-circulation channel for circulating refrigerant that cools a fuel cell; a pump for circulating the refrigerant; a heat-dissipation unit for emitting the heat of the refrigerant and cooling the refrigerant; a bypass channel connected to the refrigerant-circulation channel so as to circumvent the heat-dissipation unit; and an on-off valve provided on a junction part in which there merge a low-temperature refrigerant that has passed through the heat-dissipation unit and a high-temperature refrigerant that has passed through the bypass channel without passing through the heat-dissipation unit. When the temperature of the high-temperature refrigerant reaches or exceeds a predetermined valve-opening temperature, the on-off valve opens and the low-temperature refrigerant merges with the high-temperature refrigerant before being supplied to the fuel cell. The basic pump discharge flow volume is calculated in accordance with the state of the fuel ...

SYSTEM FOR ADJUSTING TEMPERATURE OF COOLING-LIQUID FOR FUEL CELL, AND THERMOSTAT VALVE

A system for adjusting the temperature of cooling liquid is provided with a radiator, a cooling liquid circulation conduit, a radiator bypass conduit, a thermostat valve, and a valve bypass conduit through which a predetermined amount of cooling liquid in the radiator bypass conduit flows even if the thermostat valve is completely closed.

Fuel cell device and related control method

For fuel cell cogeneration cogeneration system and method of operating the same

Improvements with the combustible batteries

Fuel cell system temperature regulating device, has unit controlling pump and valves to adapt temperature of coolant passing through fuel cell system for maintaining temperature in system around specific temperature, in nominal operation

Dispositif de régulation de la température d'un système de pile à combustible embarqué à bord d'un véhicule automobile, comprenant un circuit de circulation (2) d'un fluide caloporteur pour la régulation thermique du système, une unité de commande électronique (24), une pompe (3) commandée par l'unité de commande électronique (24), et une pluralité de capteurs de température (4, 5, 6, 7) dont l'un (4) est placé en sortie de la pile à combustible. Le circuit de circulation (2) traverse la pile à combustible (1) et un condenseur pré-anodique (8), et comprend une première pluralité de vannes de régulation (9, 10, 11, 12) commandées par l'unité de commande électronique (24) de manière à maintenir, en fonctionnement nominal, une température (Topt) dans la pile à combustible (1) comprise dans un intervalle de températures.

Flow supply line i.e. air admission line, temperature regulating device for e.g. electric vehicle, has regulation units controlled based on air temperature, and water temperatures respectively at outlet of compartment and exchanger

L'invention concerne un dispositif de régulation de la ligne d'alimentation d'une source d'énergie, notamment de la ligne d'admission d'air d'une pile à combustible. Ce dispositif est caractérisé en ce qu'il comprend une seconde boucle (2) du même fluide, cette seconde boucle (2) comprenant le compartiment interne (R) de régulation de la source d'énergie et étant parcourue par le fluide de ce compartiment (R), la première boucle (1) et cette seconde boucle (2) étant connectées entre elles en ayant en commun la pompe (4), l'échangeur (D1) de chaleur avec l'extérieur et une partie des moyens (5, 6, 8) de régulation pour réguler le débit de fluide dans ces boucles (1 et 2), ces moyens de régulation (5, 6, 8) étant commandés par une logique de commande (9) au moins selon la température du flux (T2) dans la ligne d'alimentation, la température du fluide d'échange (T3) de chaleur à la sortie du compartiment interne (R) de la source d'énergie et la température (T4) du fluide amené à l'échangeur ...

METHOD FOR TEMPERATURE CONTROL IN A FUEL CELL SYSTEM AND FUEL CELL SYSTEM

Systems of energy of stack of combustìvel, converters of direct chain voltage, methods of generation of energy of stack of combustìvel and methods of energy conditioning and method of conditioning of direct chain energy

FUEL CELL IN-PLANE STATE ESTIMATING SYSTEM AND FUEL CELL IN-PLANE STATE ESTIMATING METHOD

The membrane electrode assembly is virtually divided into a plurality of small regions arranged along the flow of reactive gases. A current density 132 and a transfer amount 136 of water in an n-1 region are calculated referring to the maps defining a relationship between a power generation environment and a current density and a relationship between the power generation environment and a transfer amount of water, on the basis of power generation environments 122 and 128 transmitted from a pre-stage. Consumption amounts 138 and 146 of the reactive gases are calculated from the current density 132. A power generation environment transmitted to an n region is calculated by reflecting the consumption amounts 138 and 146 of the reactive gases and the transfer amount 136 of water (140, 144, 148, 150). Power generation environments and power generation states are sequentially predicted as to all the small regions.

FUEL CELL-COUPLED HEATING AND REFRIGERATION SYSTEM

Disclosed are fuel cell coupled refrigeration systems and to the use of fuel cells to provide thermal energy to a refrigeration system. More particularly, a heat exchanger couples, directly or indirectly, to a fuel cell and a heat driven refrigeration system to transfer at least a portion of thermal energy generated by the fuel cell to the refrigeration system, thereby driving a refrigeration cycle of the refrigeration system.

COOLING SYSTEM AND METHOD FOR USE WITH A FUEL CELL

A cooling system is provided for use with a fuel cell. The cooling system comprises a first heat exchanger fluidly connected to an outlet passage of the fuel cell. The first heat exchanger can be configured to condense at least a portion of a fluid passing through the outlet passage of the fuel cell into liquid water. The cooling system can also comprise a second heat exchanger fluidly connected to an outlet passage of the first heat exchanger and an inlet passage of the fuel cell. The second heat exchanger can be configured to cool a fluid passing into the inlet passage of the fuel cell, in addition, the outlet passage of the fuel cell and the inlet passage of the fuel cell can be fluidly connected to a cathode of the fuel cell, and the inlet passage of the fuel cell can be configured to supply water to the cathode.

FUEL CELL SYSTEM

Voltage rising detection unit detects a voltage rising condition of a fuel cell stack after the supply of reactant gas to the fuel cell stack is started. A control unit determines an internal state of the fuel cell stack on the basis of the detected voltage rising condition of the fuel cell stack, and then decides a subsequent operation of the fuel cell stack in accordance with the determination. This makes it possible to minimize deterioration of the fuel cell stack which is caused by generating power continuously in an unsuitable state.

Operation method for polymer electrolyte fuel cell

An operation method is provided for a polymer electrolyte fuel cell in an optimum operating condition by regulating the cell by a function represented by a gas flow rate and the difference between a saturated steam pressure and an actual steam pressure, by regulating an in-plane temperature distribution obtained by a cooling water flow direction and by the regulation of a cooling water inlet temperature and a cooling water flow amount; a gas supply amount; a supplied moisture amount; and a current density.

Fuel cell system and method for operating fuel cell system

A fuel cell system of the present invention is a fuel cell system including a fuel cell and includes a medium circulation passage, a heat medium tank, a first circulator, a recovered water tank, a water circulation passage, a second circulator, a water purifier, a temperature detector, and a controller. The heat medium circulation passage and the water circulation passage are configured so as to realize heat exchange between a heat medium and water. The controller executes a circulation operation in which when the temperature detector detects a temperature lower than a first temperature capable of sterilizing microorganisms, the second circulator is caused to operate such that the temperature detected by the temperature detector becomes the first temperature or higher. The controller forbids the operation of the second circulator when the temperature detector detects a temperature equal to or higher than a second temperature that is lower than a temperature at which heat deterioration of ...

Wet state control device for fuel cell

A wet state control device for fuel cell includes a priority control unit for preferentially controlling either one of a pressure and a flow rate of cathode gas when a wet state of a fuel cell is adjusted, a water temperature control unit for controlling a temperature of cooling water when the wet state of the fuel cell is not completely adjustable by a control of the priority control unit, and a complementary control unit for controlling the other of the pressure and the flow rate of the cathode gas to complement a response delay of the water temperature control unit.

Fuel cell and coolant storage

A method of operating a fuel cell system comprising a fuel cell assembly configured to generate electrical power from a fuel flow and an oxidant flow, the method comprising a first phase and a subsequent second phase, the first phase comprising; operating the fuel cell assembly with a first stoichiometric ratio of oxidant flow to fuel flow to generate electrical power; providing said generated electrical power to a heater element for heating a coolant for supply to said fuel cell assembly; the second phase comprising; delivering coolant heated in the first phase to the fuel cell assembly; operating the fuel cell assembly with a second stoichiometric ratio of oxidant flow to fuel flow to generate electrical power, the second stoichiometric ratio lower than the first ratio.

FUEL CELL COGENERATION SYSTEM, METHOD OF OPERATING

A method of operating a fuel cell cogeneration system comprises the steps of cooling a fuel cell by circulating an internal heat transfer medium through the fuel cell while the fuel cell is generating electric power, storing an external heat transfer medium in a heat utilization portion, detecting remaining calories of the heat utilization portion by a first detector provided at the heat utilization portion, increasing a temperature of the fuel cell to an operating temperature by carrying out a first temperature increasing operation, and increasing the temperature of the fuel cell to the operating temperature by carrying out a second temperature increasing operation.

Fuel cell system and a method and apparatus for starting a fuel cell stack

The invention concerns fuel cell systems and methods for converting chemical energy of a fuel containing hydrogen into electricity. According to the invention, a fuel cell stack is provided having at least one anode and one cathode separated by a proton-exchange membrane. A fuel transport circuit feeds fuel to the fuel cell stack, and a temperature control system is adapted to control the temperature of the fuel cell stack by circulating a coolant medium through said fuel cell stack. The temperature control system includes a pump for circulating the coolant medium, a heater unit connected to a coolant transport circuit for heating the coolant with a PTC heater, a heat radiation unit connected to the coolant transport circuit for removing excess heat, and a temperature sensor. In response to a startup condition of the fuel cell stack, a controller is adapted to read a temperature signal indicative of the fuel cell stack temperature, to bypass the heat radiation unit, if the fuel cell stack ...

SUPPLY SYSTEM AND WARNING DEVICE FOR A FUEL CELL STACK, AND METHOD FOR CONTROLLING THE SUPPLY SYSTEM

FUEL-CELL COOLING ASSEMBLY AND METHOD FOR CONTROLLING A FUEL-CELL COOLING ASSEMBLY

Brennstoffzellensystem mit verbessertem Feuchtemanagement und dessen Verwendung in einem Fahrzeug

Brennstoffzellensystem (10), mit: einem Brennstoffzellenstapel (12), der eine Kathodeneinlassluftströmung aufnimmt und eine Kathodenabgasströmung ausgibt; einem Rückstauventil (42), das in einer Kathodenabgasleitung (16) positioniert ist; einem Kompressor (18) zum Liefern der Kathodeneinlassluftströmung an den Stapel (12); einer Wasserdampfübertragungsvorrichtung (20), die die Kathodeneinlassluftströmung von dem Kompressor (18) und die Kathodenabgasströmung von dem Brennstoffzellenstapel (12) aufnimmt, wobei die Wasserdampfübertragungsvorrichtung (20) Wasserdampf in dem Kathodenabgas verwendet, um die Kathodeneinlassluft zu befeuchten; einem Kühlfluidkreislauf (28) zum Führen eines Kühlfluides durch den Stapel (12), um eine Stapeltemperatur zu steuern; und einem Controller (40) zum Steuern der relativen Feuchte der Kathodeneinlassluft, so dass die relative Feuchte nicht unter einen vorbestimmten Prozentsatz fällt, wobei der Controller (40) eingerichtet ist, um die relative Feuchte des Kathodenabgases ...

Verfahren zur Temperaturregelung in einer Brennstoffzellenanlage und Brennstoffzellenanlage

Verfahren zur Temperaturregelung in einer Brennstoffzellenanlage (2) mit zumindest einem Brennstoffzellenmodul (4, 6) und einer Kühlvorrichtung (10) zum Kühlen des Brennstoffzellenmoduls (4, 6), bei dem Kühlmittel durch das Brennstoffzellenmodul (4, 6) geführt wird und ein Prozessmittel (8) eine Temperatur des Kühlmittels am Ausgang des Brennstoffzellenmoduls (4, 6) regelt, dadurch gekennzeichnet, dass die Kühlmitteltemperatur innerhalb des Brennstoffzellenmoduls (4, 6) gemessen wird und eine aus dem Messwert abgeleitete Störgröße und eine Änderung des elektrischen Stroms (I1, I2) durch das Brennstoffzellenmodul (4, 6) als weitere Störgröße auf die Regelung aufgeschaltet werden.

Brennstoffzellensystem und Verfahren zur Steuerung einer Brennstoffzelle

Ein Gegenstand besteht in der einfachen Bereitstellung einer Leistungsgrenze einer Brennstoffzelle anhand der Temperatur eines Kühlmediums unter Verbesserung des Startverhaltens einer Brennstoffzelle. Wenn die aus einer Endabschnittszelle der Brennstoffzelle gewonnene Zellspannung gleich oder kleiner als ein erster Schwellenwert ist, stellt ein Steuergerät eines Brennstoffzellensystems einen für die Leistungsgrenze der Brennstoffzelle verwendeten Leistungsgrenzbetrag auf einen Wert ein, der kleiner ist als ein Leistungsgrenzbetrag, welcher der durch eine Temperaturmesseinheit gemessenen Temperatur des Kühlmediums entspricht.

Brennstoffzellenmodul mit Wasser- und Wärmemanagementfunktion sowie Managementverfahren für das Brennstoffzellenmodul

Es ist ein Brennstoffzellenmodul mit Wasser- und Wärmemanagementfunktion angegeben, welches einen Brennstoffzellenstapel, Versorgungseinheiten, eine Zellspannungsüberwachungseinheit und eine Stromabgabeneinheit innerhalb der Submodule eines Gehäuses sowie eine Strommanagementeinheit, ein Stepdown-Spannungswandler-Erhitzungssubmodul und ein Wassermanagementsubmodul innerhalb der Submodule des Gehäuses umfasst. Des Weiteren ist ein Managementverfahren für das Brennstoffzellenmodul angegeben.

Brennstoffzellensystem mit Medienmanagementplatte

Die Erfindung betrifft eine Medienmanagementplatte (1) für eine Brennstoffzellenanordnung (5), ein Brennstoffzellensystem (10), das die Medienmanagementplatte und eine Brennstoffzellenanordnung aufweist, und ein Verfahren zum Betreiben eines Brennstoffzellensystems (10) mit einer Brennstoffzellenanordnung (5) und der Medienmanagementplatte (1). In die Medienmanagementplatte (1) sind alle Leitungen zur Zuleitung und Ableitung der Brennstoffzellenmedien, und zur Behandlung der Brennstoffzellenmedien erforderliche Einrichtungen integriert. Die Medienmanagementplatte (1) kann mittels Kühlmittel beheizt werden und ist sowohl bei senkrechter als auch bei waagrechter Ausrichtung funktionsfähig.

Brennstoffzellensystem

Brennstoffzellensystem mit einem Überflutungs-Beseitigungs-Modus als einen von für Brennstoffzellen verfügbaren Betriebsmodi, wobei das Brennstoffzellensystem aufweist: eine Antriebssteuerung, die derart konfiguriert ist, um, wenn die Umgebungstemperatur des Brennstoffzellensystems gleich oder niedriger ist als eine vorgegebene erste Temperatur, die Brennstoffzellen im Überflutungs-Beseitigungs-Modus zu betreiben, und um, wenn die Umgebungstemperatur des Brennstoffzellensystems gleich oder höher ist als eine vorgegebene zweite Temperatur, die höher ist als die erste Temperatur, zu verhindern, dass die Brennstoffzellen im Überflutungs-Beseitigungs-Modus betrieben werden, wobei, im Fall einer empfangenen Überprüfungsanweisung für die Brennstoffzellen, die Antriebssteuerung die Brennstoffzellen unabhängig von der Umgebungstemperatur im Überflutungs-Beseitigungs-Modus betreibt.

Brennstoffzellensystem und Verfahren zum Steuern des Brennstoffzellensystems

Brennstoffzellensystem mit einer Brennstoffzelle, einem Gaszufuhrdurchlass, über den der Brennstoffzelle Anodengas zugeführt wird, und einem Gasaustrittsdurchlass, über den Anodengas aus der Brennstoffzelle austritt, wobei die Enden des Gasaustrittsdurchlasses im Wesentlichen geschlossen sind, wobei das Brennstoffzellensystem Folgendes umfasst: einen Verbindungsdurchlass, über den der Gasaustrittsdurchlass mit dem Gaszufuhrdurchlass in Verbindung steht; eine Verbindungszustand-Umschalteinrichtung zum Umschalten des Verbindungszustands des Verbindungsdurchlasses zwischen einem geschlossenen Zustand und einem offenen Zustand; eine Gasströmungseinrichtung zum Hervorrufen einer Gasströmung von dem Gasaustrittsdurchlass zu dem Gaszufuhrdurchlass, wenn der Verbindungsdurchlass offen ist; und eine Verbindungszustand-Steuerungseinrichtung zum Steuern des Umschaltens des Verbindungszustands des Verbindungsdurchlasses durch die Verbindungszustand-Umschalteinrichtung, wobei die Verbindungszustand-Steuerungseinrichtung ...

Coolant storage tank

Coolant storage tank

A coolant storage tank (1, Fig 1) for storing coolant in a fuel cell system (2) comprises a plurality of individually controllable heater elements 7, 8a, 8b. A first heater element 7 is located at a base 15 of the coolant storage, relative to body 4. Each heater 7, 8a, 8b may be individually controlled by controller 25, and may be sequentially activated. Heating elements may be positioned along any side of the tank, or extending therefrom in any combination. A method of melting frozen coolant in a coolant storage tank and an associated fuel cell.

PROCEDURE FOR REGULATING THE PRESSURE IN AN ANODE OF A GAS CELL AND GAS CELL

FUEL CELL SYSTEM

A fuel cell system includes a control unit configured to perform air-conditioning-system preparation control, wherein, under the air-conditioning-system preparation control, when an air conditioning system is not requested to heat air, it is determined whether or not a coolant within a coolant circulation passage is capable of being supplied to an air conditioning circuit, when the coolant within the coolant circulation passage is not capable of being supplied to the air conditioning circuit, the heater is operated to maintain a first predetermined temperature or higher of the coolant within the air conditioning circuit, and when the coolant within the coolant circulation passage is capable of being supplied to the air conditioning circuit, the air-conditioning water pump is operated to draw the coolant from the coolant circulation passage into the air conditioning circuit and to maintain the first predetermined temperature or higher of the coolant within the air conditioning circuit.

FUEL CELL SYSTEM

A fuel cell system and method of controlling a fuel cell system capable of preventing deterioration in performance when the system reinitiates a normal operation from an idle stop state. For a predetermined time after reinitiating the supply of fuel gas and oxidant gas from the idle stop state, discharge of off-gas occurs and the cessation of fuel gas and oxidant gas supply is prohibited.

FUEL CELL SYSTEM AND CONTROL METHOD THEREOF

A fuel cell system comprises a fuel cell stack, radiator, stack side cooling water passage, radiator side cooling water passage, bypass cooling water passage, deionizer, stack side cooling water pump, and radiator side cooling water pump. The pumps are formed from rotary pumps able, to change directions and amounts of cooling water discharged by changes of drive speeds. Drive speeds of the pumps are controlled to thereby control an amount of cooling water flowing through the radiator side cooling water passage, an amount of the cooling water flowing through the stack side cooling water passage, and a direction and amount of the cooling water flowing through the bypass cooling water passage.

System and methods for controlling cabin heating in fuel cell vehicles

System and methods for controlling and optimizing coolant system parameters in a fuel cell system to obtain a requested cabin temperature in a fuel cell vehicle are presented. A method for managing a temperature in a vehicle cabin may include receiving an indication relating to a desired vehicle cabin temperature and a plurality of measured operating parameters. Based on the measured operating parameters, a projected output temperature of a cabin heat exchanger may be estimated. A determination may be made that the projected output temperature of the cabin heat exchanger is less than the indication. Based on the determination, a fuel cell coolant parameter may be adjusted.

Circulation cooling water device of fuel cell system

Fuel cell module with water and thermal management capability

The invention discloses a fuel cell module with water and thermal management capacity, comprising a fuel cell pile, a distribution unit, a power management unit, a voltage reducing and heating submodule, a liquid water management submodule, an external packing submodule and other parts. The distribution unit distributes hydrogen, air and a cooling medium which enter the modules into each single pile; the power management unit carries out state detection and management on the modules and controls the connection and the disconnection of power output; the voltage reducing and heating submodule regulates the temperature of the fuel cell pile and controls the output voltage; the liquid water management submodule carries out liquid water separation on the hydrogen and the air which enter a fuelcell pile module and discharges the liquid water at the hydrogen side; and the external packing submodule realizes water and dust prevention and heat preservation of the fuel cell pile module and discharges ...

THERMAL MANAGEMENT SYSTEM FOR COLD-START PERFORMANCE ENHANCEMENT OF FUEL CELL

The present invention relates to a thermal management system (TMS) for cold-start performance enhancement of a fuel cell, and more specifically, to a technology for solving the problem of output performance degradation during cooling of a cooling water circulation loop constituting a TMS, which is a TMS for cooling a stack as a power generation module of a fuel cell vehicle, in which a further auxiliary cooling water circulation loop is provided to be branched from the cooling water circulation loop of the TMS, and the auxiliary cooling water circulation loop is provided to pass through the inside of an end plate of a fuel cell stack, thereby enhancing cold start and cold output performance of a fuel cell. COPYRIGHT KIPO 2017 (50) Heater (60) Pump (80) 3 rooms V/V (cooling water) ...

연료 전지 시스템, 연료 전지의 제어 방법

... 냉각 매체의 온도를 이용하여 간편하게 연료 전지의 출력 제한을 하면서, 또한 연료 전지의 시동성을 향상시킨다. 연료 전지 시스템의 제어부는, 연료 전지의 단부 주변의 셀로부터 취득된 셀 전압이 제1 임계값 이하로 된 경우에는, 연료 전지의 출력 제한에 사용하는 출력 제한량을, 온도 측정부에 의해 측정된 냉각 매체의 온도에 따른 출력 제한량보다도 작게 한다.

연료 전지 시스템 및 그 제어 방법

... 본 발명은, 보다 저렴하고 보다 간단한 구성으로써 냉각수의 흐름을 확실하게 제어하는 것을 과제로 한다. 연료 전지 시스템은, 연료 전지 스택(10), 라디에이터(51), 스택측 냉각수 통로(53s), 라디에이터측 냉각수 통로(53r), 바이패스 냉각수 통로(53b), 이온 제거기(55), 스택측 냉각수 펌프(56s), 및 라디에이터측 냉각수 펌프(56r)를 구비한다. 스택측 냉각수 펌프(56s) 및 라디에이터측 냉각수 펌프(56r)는 구동 회전수를 변경함으로써 토출되는 냉각수의 방향 및 양을 변경할 수 있는 회전 펌프로 형성된다. 스택측 냉각수 펌프의 구동 회전수 및 라디에이터측 냉각수 펌프의 구동 회전수를 각각 제어하고, 그것에 의해, 라디에이터측 냉각수 통로 내를 유통하는 냉각수의 양, 스택측 냉각수 통로 내를 유통하는 냉각수의 양과, 바이패스 냉각수 통로 내를 유통하는 냉각수의 방향 및 양을 각각 제어한다.

FUEL CELL STACK AND FUEL CELL SYSTEM

A fuel cell stack 1 in which cells each having an anode and a cathode are stacked includes a fuel gas channel 21A that supplies a fuel gas to the anode, an oxidant gas channel 21B that supplies an oxidant gas to the cathode, an anode cooling medium channel 24 that conducts a cooling medium that cools the fuel gas that flows in the fuel gas channel 21A, and a cathode cooling medium channel 25 that conducts the cooling medium that cools the oxidant gas that flows in the oxidant gas channel 21B.

INTEGRATED ENERGY MANAGEMENT SYSTEM INCLUDING A FUEL CELL COUPLED REFRIGERATION SYSTEM

The disclosure relates to an integrated energy management system for managing thermal and electrical energy in a fuel cell coupled refrigeration system. In one example, a refrigeration cycle is driven by heat provided alternatively by a fuel cell and an electric heating device. In another example, a refrigeration cycle is driven by heat provided by a fuel cell to reduce consumption of electrical grid supplied power.

FUEL CELL TEMPERATURE CONTROL

Fuel cell system

A fuel cell system of the present invention includes a fuel cell (3); a water passage (8, 10, 12, 15, 17, 18); an electric heater (19) configured to heat the water passage; a water-related temperature detector (20); a first abnormality detector (22, etc.) configured to detect first abnormalities; a second abnormality detector (28, etc.) configured to detect second abnormalities; and a controller (21), and the controller is configured to stop an operation of the fuel cell system when the first abnormality is detected by the first abnormality detector or when the second abnormality is detected by the second abnormality detector. In a case where the fuel cell system stops since the second abnormality is detected by the second abnormality detector, the controller causes the electric heater (19) to carry out an operation as an antifreezing operation when the water-related temperature detector detects a temperature that is not more than a predetermined threshold. In a case where the fuel cell ...

Equation based cooling system control strategy/method

A system for heating or cooling a fuel cell circuit of a vehicle includes a fuel cell stack, a temperature sensor to detect a fluid temperature of the fluid, a pump to pump the fluid through the fuel cell circuit, and an ECU. The ECU is designed to determine a temperature control signal based on the fluid temperature of the fluid. The ECU is also designed to calculate a desired mass flow rate of the fluid through the fuel cell stack based on the temperature control signal. The ECU is also designed to calculate a desired pump speed of the pump based on the desired mass flow rate of the fluid through the fuel cell stack. The ECU is also designed to control the pump to pump the fluid at the desired pump speed to increase or decrease the fluid temperature of the fluid.

Method and system for estimating and controlling water content of fuel cell

A water content estimation method includes: measuring, by a temperature sensor, the temperature of coolant for cooling a fuel cell stack; calculating, by a water content calculator, a current heat capacity of the fuel cell stack based on the measured temperature of coolant; and estimating, by the water content calculator, a water content of the fuel cell stack based on the calculated current heat capacity of the fuel cell stack.

FUEL CELL SYSTEM

Provided is a fuel cell system including a fuel cell, a radiator that is provided in a circulation path of coolant that cools the fuel cell, a spray unit that sprays, toward the radiator, generated water that has been generated in and discharged from the fuel cell, and a heating unit that is provided in a supply path of the generated water from the fuel cell to the spray unit and heats the generated water. 1. A fuel cell system comprising:a fuel cell;a radiator that is provided in a circulation path of coolant that cools the fuel cell;a spray unit that sprays, toward the radiator, water that has been generated in and discharged from the fuel cell; anda heating unit that is provided in a supply path of the generated water from the fuel cell to the spray unit and that heats the generated water.2. The fuel cell system according to claim 1 , further comprising:a bypass path that is provided, via a switching valve, between the supply path and the spray unit on an upstream side of the heating unit in a supply direction of the generated water;a temperature detection unit that detects a temperature of the generated water on an upstream side of the switching valve in the supply direction of the generated water; anda control unit which, in a case in which the temperature detected by the temperature detection unit is equal to or greater than a reference value, switches the switching valve such that the generated water flows to the bypass path.3. The fuel cell system according to claim 1 , further comprising:a first temperature detection unit that detects a temperature of the coolant on an upstream side of the radiator in the circulation direction of the coolant;a second temperature detection unit that detects a temperature of the generated water; anda control unit that controls a heating amount of the heating unit by comparing the temperature of the coolant detected by the first temperature detection unit and the temperature of the generated water detected by the second ...

System and method for recovering output of fuel cell

A system and method for recovering an output of a fuel cell is provided. The system and method for recovering an output of a fuel cell includes: an output recovering device connected to a fuel cell stack through at least one coolant heater line; and a vehicle controller configured to communicate with the output recovering device and control supply of a coolant, air, and hydrogen to the fuel cell stack. The output recovering device also includes a current supplier configured to supply a current to the fuel cell stack and a controller configured to communicate with the vehicle controller and control the current supplied from the current supplier.

COOLING SYSTEM dT/dt BASED CONTROL

A system for heating or cooling a fuel cell circuit includes a fuel cell stack designed to receive a fluid. The system also includes a temperature sensor to detect a fluid temperature of the fluid, an actuator to increase or decrease the fluid temperature, and an electronic control unit (ECU). The ECU is designed to receive a target fuel cell temperature corresponding to the fuel cell stack and based on a power request, to determine a temperature rate of change corresponding to a desired rate of temperature change of a current fuel cell temperature of the fuel cell stack to achieve the target fuel cell temperature based on the target fuel cell temperature, and to control the actuator to increase or decrease the fluid temperature based on the temperature rate of change to cause the current fuel cell temperature to increase or decrease to the target fuel cell temperature.

Devices and Methods for Controlling A Fluid Module

Disclosed are methods and devices for controlling freezing of a cooling module for use in a fuel cell system. The cooling module includes a first chamber configured to receive a first material, a second chamber configured to receive a second material, and a first insulating layer disposed between the first chamber and the second chamber. The second chamber surrounds, at least partly, the first chamber. As ambient temperature decreases, the second material begins freezing before the first material begins freezing. 1. A cooling module for use in a fuel cell system , the cooling module comprising:a first chamber configured to receive a first material;a second chamber configured to receive a second material; anda first insulating layer disposed between the first chamber and the second chamber,wherein the second chamber at least partly surrounds the first chamber, andwherein, upon a decrease in ambient temperature, the second material begins freezing before the first material begins freezing.2. The coolant module of claim 1 , wherein at least one of the first and second material is water.3. The coolant module of claim 1 , wherein at least one of the first and second material is an exothermic gel.4. The coolant module of further comprising a second insulation surrounding the cooling module.5. The coolant module of further comprising at least one heating element in fluid communication with the first material.6. The coolant module of further comprising at least one heating element in fluid communication with the second material.7. The coolant module of or claim 1 , further comprising:at least one temperature sensor;a controller in signal communication with the at least one temperature sensor,wherein the controller controls the power provided to the at least one heating element in response to temperature data as indicated by the at least one temperature sensor.8. The coolant module of claim 7 , wherein the at least one temperature sensor includes a bimetallic switch.9. The ...

FUEL CELL SYSTEM AND METHOD OF OPERATING SAME

A fuel cell system comprising: a first line configured to pass through a fuel cell stack and allow a coolant to circulate therein; a pump provided in the first line; a second line having one end connected to the first line at a first point positioned between an outlet of the pump and the fuel cell stack, and the other end connected to the first line at a second point positioned between an inlet of the pump and the fuel cell stack; a heater provided in the second line to heat the coolant flowing along the second line; and a third line configured to pass through an air conditioning unit, connected to the first line between the first point and an outlet of the fuel cell stack, and configured to allow a part of the coolant to circulate therein. 1. A fuel cell system comprising:a first line configured to pass through a fuel cell stack and allow a coolant to circulate therein;a pump provided in the first line and configured to allow the coolant to flow;a second line having a first end connected to the first line at a first point positioned between an outlet of the pump and the fuel cell stack, and a second end connected to the first line at a second point positioned between an inlet of the pump and the fuel cell stack;a heater provided in the second line and configured to heat the coolant flowing along the second line; anda third line configured to pass through an air conditioning unit, connected to the first line between the first point and an outlet of the fuel cell stack, and configured to allow the coolant to circulate therein.2. The fuel cell system of claim 1 , wherein a first end of the third line is connected to the first line between the pump and the first point claim 1 , and a second end of the third line is connected to the first line between the pump and the second point.3. The fuel cell system of claim 1 , comprising:an ion filter provided in the third line and configured to filter out ions contained in the coolant passing through the air conditioning unit.4. ...

Brennstoffzellensystem und Steuerverfahren

Es wird ein Brennstoffzellensystem (100) zur Verfügung gestellt, welches verlässlich seinen Betrieb aufrechterhalten kann, selbst nach Entfernen einer Sekundärbatterie (128), sowie ein zugehöriges Steuerverfahren. Das Brennstoffzellensystem (100) ist so ausgebildet, dass es die Sekundärbatterie (128) auflädt, die abnehmbar an dem Brennstoffzellensystem (100) vorgesehen ist, und elektrische Energie einem Verbraucher (45) zuführt. Das Brennstoffzellensystem (100) weist einen Zellenstapel (102) auf, der mit mehreren Brennstoffzellensystemen (104) versehen ist; und eine Steuerung (144), die eine CPU (156) aufweist. Während der Energieerzeugung in dem Zellenstapel (102) stellt die CPU (156) fest, ob die Sekundärbatterie (128) von dem Brennstoffzellensystem (100) entfernt wurde oder nicht, auf Grundlage eines Spannungsabfalls in dem Zellenstapeie (128) entfernt wurde, schaltet die CPU (156) ein Relais (174) ab, und wird die Energiezufuhr von dem Zellenstapel (102) zum Verbraucher (45) unterbrochen ...

SYSTEM UND VERFAHREN ZUM STEUERN EINER BRENNSTOFFZELLE

Es ist ein Brennstoffzelle-Steuersystem bereitgestellt, aufweisend: eine Brennstoffzelle (10), die sowohl mit Wasserstoff als auch mit Sauerstoff versorgt wird und eingerichtet ist, um mittels einer chemischen Reaktion darin elektrischen Strom zu erzeugen, ein Kühlsystem mit einer Wärmetauschervorrichtung (21), die in der Lage ist, Wärme mit Außenluft auszutauschen, wobei das Kühlsystem (20) eingerichtet ist, um Kühlwasser darin zu zirkulieren und Wärme mit der Brennstoffzelle (10) zu tauschen, eine Temperaturerfassungseinheit (30), die eingerichtet ist, um eine Brennstoffzellentemperatur oder eine Kühlwassertemperatur im Kühlsystem zu erfassen, und eine Kühlsteuereinheit (40), die eingerichtet ist, um das Kühlsystem (20) so zu steuern, dass es die Brennstoffzelle (10) zusätzlich kühlt, wenn die Brennstoffzelle aufhört, elektrische Leistung zu erzeugen, wenn die Brennstoffzellentemperatur oder die Kühlwassertemperatur, die von der Temperaturerfassungseinheit (30) erfasst wird, während die ...

Systemniveaueinstellungen zur Erhöhung der Stapeleinlass-RF

Steuersystem für einen Brennstoffzellenstapel, das die relative Feuchte der Kathodeneinlassluft über einem vorbestimmten Prozentsatz beibehält, indem eines oder mehrere aus einer Verringerung einer Stapelkühlfluidtemperatur, Erhöhung enes Kathodendrucks und/oder Verringerung der Kathodenstöchiometrie, wenn nötig, ausgeführt werden, um die relative Feuchte des Kathodenabgases zu erhöhen, das von der Wasserdampfübertragungsvorrichtung verwendet wird, um die Kathodeneinlassluft zu befeuchten. Das Steuersystem kann auch den Leistungsausgang des Stapels begrenzen, um die relative Feuchte der Kathodeneinlassluft über dem vorbestimmten Prozentsatz zu halten.

VERFAHREN ZUM REGELN DES DRUCKS IN EINER ANODE EINER BRENNSTOFFZELLE

GAS CELL SYSTEM

GAS CELL SYSTEM AND TAX PROCEDURE FOR IT

UTILITY SYSTEM AND WARNING DEVICE FOR A GAS CELL PILE AS WELL AS PROCEDURE AS A CHECK OF THE UTILITY SYSTEM

PROCEDURE FOR THE TEMPERATURE CONTROL IN A GAS CELL PLANT AND GAS CELL PLANT

FUEL CELL SYSTEM WITH COOLING WATER PUMP OF REVERSIBLE FLOW AND CONTROL METHOD THEREOF

A fuel cell system comprises a fuel cell stack, radiator, stack side cooling water passage, radiator side cooling water passage, bypass cooling water passage, deionizer, stack side cooling water pump, and radiator side cooling water pump. The pumps are formed from rotary pumps able, to change directions and amounts of cooling water discharged by changes of drive speeds. Drive speeds of the pumps are controlled to thereby control an amount of cooling water flowing through the radiator side cooling water passage, an amount of the cooling water flowing through the stack side cooling water passage, and a direction and amount of the cooling water flowing through the bypass cooling water passage.

CONTROL DEVICE OF AIR CONDITIONING SYSTEM

A fuel cell system includes a control unit configured to perform air-conditioning-system preparation control, wherein, under the air- conditioning-system preparation control, when an air conditioning system is not requested to heat air, it is determined whether or not a coolant within a coolant circulation passage is capable of being supplied to an air conditioning circuit, when the coolant within the coolant circulation passage is not capable of being supplied to the air conditioning circuit, the heater is operated to maintain a first predetermined temperature or higher of the coolant within the air conditioning circuit, and when the coolant within the coolant circulation passage is capable of being supplied to the air conditioning circuit, the air- conditioning water pump is operated to draw the coolant from the coolant circulation passage into the air conditioning circuit and to maintain the first predetermined temperature or higher of the coolant within the air conditioning circuit.

FUEL CELL SYSTEM AND METHOD FOR OPERATING FUEL CELL SYSTEM

A fuel cell system of the present invention is a fuel cell system including a fuel cell (101) and includes a medium circulation passage (71), a heat medium tank (102), a first circulator (105), a recovered water tank (104), a water circulation passage (72), a second circulator (108), a water purifier (109), a temperature detector (111), and a controller (110). The heat medium circulation passage (71) and the water circulation passage (72) are configured so as to realize heat exchange between a heat medium and water. The controller (110) executes a circulation operation in which when the temperature detector (111) detects a temperature lower than a first temperature capable of sterilizing microorganisms, the second circulator (108) is caused to operate such that the temperature detected by the temperature detector (111) becomes the first temperature or higher. The controller (110) forbids the operation of the second circulator (108) when the temperature detector (111) detects a temperature ...

Thawing device for motor vehicle, has electronic control unit that controls valve to direct exhaust gas from thermal engine to heat exchanger embedded in water reservoir if temperature in reservoir is negative

L'invention s'applique à un dispositif de dégel d'un réservoir d'eau (4) d'une unité auxiliaire de puissance APU d'un système pile à combustible comprenant un moyen de génération d'hydrogène (3) à partir d'un autre carburant et d'un moyen de génération d'énergie électrique (1) à partir d'hydrogène et d'un comburant, ladite pile à combustible étant prévue pour fournir une puissance électrique au véhicule, des moyens (2) permettant de comprimer l'air nécessaire aux composants du système, un moyen de stockage de l'eau (4) produite par l'installation, un échangeur thermique (8), un clapet (9), une ligne d'échappement (7), une pompe (5), un capteur de température (17) compris dans le réservoir (4) et une unité de commande électronique (24), caractérisée en ce que l'installation comporte en plus un système de commande (24) de la température dans le moyen de stockage de l'eau (4).

연료전지 스택의 제어 장치 및 그 방법

... 본 발명은 연료전지 스택의 제어 장치 및 그 방법에 관한 것으로, 연료전지 스택의 공기 증기압과 연료전지 스택의 냉각수 온도에 상응하는 목표 상대습도(Relative humidity)가 기록된 맵에 기초하여 연료전지 스택의 상태(Dry/Flooding)를 파악하고, 상기 파악된 연료전지 스택의 상태에 따라 공기유량 및 냉각수 온도를 조절함으로써, 연료전지 스택의 운전 효율을 최적화할 수 있는 연료전지 스택의 제어 장치 및 그 방법을 제공하고자 한다. 이를 위하여, 본 발명은 연료전지 스택의 제어 장치에 있어서, 연료전지 스택의 공기 증기압과 연료전지 스택의 냉각수 온도에 상응하는 목표 상대습도가 기록된 목표 상대습도 맵을 저장하는 맵 저장기; 연료전지 스택의 출구 압력을 측정하는 압력센서; 연료전지 스택에 의해 생성된 전류를 측정하는 전류센서; 연료전지 스택의 냉각수 온도를 측정하는 수온센서; 및 상기 목표 상대습도 맵을 기반으로, 연료전지 스택의 상대습도를 이용하여 연료전지 스택의 상태를 파악하고, 연료전지 스택의 상태에 따라 연료전지 스택의 공기유량 또는 냉각수 온도를 설정하는 연료전지 제어기를 포함한다.

FUEL CELL SYSTEM AND METHOD FOR INFLUENCING THE THERMAL AND TEMPERATURE BUDGET OF A FUEL CELL STACK

The invention relates to a fuel cell system having a fuel cell stack (10) and having a device for supplying a medium in order to influence the thermal and temperature budget of the fuel cell stack. The invention provides for the capability to provide the medium with a temperature- and/or volume-flow profile which can be varied at right angles to its flow direction. The invention also relates to a method for influencing the thermal and temperature budget of a fuel cell stack.

FUEL CELL SYSTEM

Provided is a fuel cell system having an operation control unit which performs switching between a plurality of cell operation modes including a flooding prevention mode. The control unit controls the fuel cell system as follows. When the ambient temperature of the fuel cell system is equal to or lower than a predetermined first temperature, the fuel cell is operated in the flooding prevention mode. When the ambient temperature of the fuel cell system is equal to or higher than a second predetermined temperature which is higher than the first temperature, the operation of the fuel cell in the flooding dissolving mode is inhibited. When an instruction for checking the fuel cell is inputted, the operation control unit operates the fuel cell in the flooding prevention mode regardless of the ambient temperature of the fuel cell. This improves user-friendliness when checking the fuel cell system having the operation mode for preventing flooding.

FUEL CELL SYSTEM AND FUEL CELL SYSTEM FAILURE JUDGMENT METHOD

A fuel cell system (10) consumes fuel gas in a gas leak detection portion of fuel gas supply systems (31, 32) by generation of a fuel cell (20). Power generated by the fuel cell (20) is further consumed by an auxiliary device. A judgment unit (50) judges gas leak according to the pressure lowering of the fuel gas in the gas leak detection portion. The control unit (50) increases consumption of fuel gas in the gas leak detection portion by increasing the power consumption by the auxiliary device. With this configuration, when the power generation of the fuel cell (20) and the power consumption by the auxiliary device results in an insufficient consumption of the fuel gas, the power consumption of the auxiliary device is increased so as to promote consumption of the fuel gas, thereby enabling to perform rapid gas leak judgment.

Method to thaw frozen coolant in a fuel cell system

A method for increasing the temperature of a cooling fluid used to control the temperature of a fuel cell stack at a system freeze start-up. The method includes determining that the cooling fluid is frozen or nearly frozen, and if so, deactivating excessive power draw on the fuel cell stack to minimize stack waste heat and activating a cooling fluid heater to heat the cooling fluid. Once it is determined that the cooling fluid is not frozen or is flowing, then the method initiates a normal system start-up.

Induction heating device for fuel cell system

The present invention provides an induction heating device for a fuel cell system, which can rapidly heat coolant during cold start-up, control the power consumption depending on the voltage of a fuel cell stack, and ensure the insulation resistance by separating a heating unit, which is in contact with the coolant, from the outside. That is, the present invention provides an induction heating device for a fuel cell system, in which an insulating housing is provided in a coolant circulation line, a heater for heating coolant is provided in the housing, and a high frequency controller for controlling the power consumption of the heater is provided at the outside of the housing such that the coolant can be rapidly heated during cold start-up, precisely control the power consumption depending of the voltage of a fuel cell stack, and improve the insulation performance by separating the heater as a heating unit, which is in contact with the coolant, and the high frequency controller and a coil as a power unit with respect to the insulating housing.

OPERATION METHOD FOR FUEL CELL, AND FUEL CELL SYSTEM

A fuel cell stack is provided with a pair of refrigerant inlet ports and a pair of refrigerant outlet ports. The refrigerant inlet ports are disposed in the vicinity of an oxidant gas inlet port and a fuel gas inlet port in a manner such that one of the refrigerant inlet ports is disposed on the side of the oxidant gas inlet port and the other refrigerant inlet port is disposed on the side of the fuel gas inlet port. The refrigerant outlet ports are disposed in the vicinity of an oxidant gas outlet port and a fuel gas outlet port in a manner such that one of the refrigerant outlet ports is disposed on the side of the oxidant gas outlet port and the other refrigerant outlet port is disposed on the side of the fuel gas outlet port. 1. An operation method for a fuel cell formed by stacking an electrolyte electrode assembly and a separator having rectangular flat surfaces in a stacking direction , the electrolyte electrode assembly including a pair of electrodes and an electrolyte interposed between the electrodes , a reactant gas supply passage and a reactant gas discharge passage extending through one pair of two opposite sides of the separator in the stacking direction , the reactant gas supply passage and the reactant gas discharge passage being connected to a reactant gas flow field for allowing a reactant gas to flow along an electrode surface , a pair of coolant supply passages and a pair of coolant discharge passages allowing a coolant to flow therethrough and extending through the other pair of two opposite sides of the separator at least at positions adjacent to the reactant gas supply passage or the reactant gas discharge passage , the pair of coolant supply passages being disposed separately on the two opposite sides and the pair of coolant discharge passages being disposed separately on the two opposite sides , the method comprising the steps of:detecting whether or not at least a portion of a fuel gas flow field serving as the reactant gas flow field where ...

AIR-INTAKE APPARATUS FOR AIR-COOLED FUEL CELL

An air-intake apparatus for an air-cooled fuel cell according to this invention is provided with outside air temperature-detecting means; an outside air flow passage; an outside air flow rate-regulating valve; inside air temperature-detecting means; an inside air flow passage; an inside air flow rate-regulating valve; an air-conditioning air passage; an air-conditioning air flow rate-regulating valve; and air-intake control means for driving and controlling the outside air flow rate-regulating valve, the inside air flow rate-regulating valve, and the air-conditioning air flow rate-regulating valve on the basis of respective temperatures detected by the outside air temperature-detecting means and the inside air temperature-detecting means, wherein this air-intake control means generates a gas having a temperature optimized by making the gas pass through one or more of these flow passages and regulating valves, and supplies this gas to the fuel cell main unit as an oxidizing gas. 1. An air-intake apparatus for an air-cooled fuel cell configured to include a fuel cell main unit to be mounted on a vehicle including an air-conditioning apparatus , supply a temperature-regulated oxidizing gas to this fuel cell main unit , and cool the fuel cell main unit by utilizing one or more of this oxidizing gas and an ambient atmosphere , the air-intake apparatus comprising:outside air temperature-detecting means for detecting the temperature of outside air of a vehicle;an outside air flow passage for introducing the outside air of the vehicle;an outside air flow rate-regulating valve for regulating the flow rate of a gas flowing through this outside air flow passage;inside air temperature-detecting means for detecting the temperature of inside air of the vehicle;an inside air flow passage for introducing the inside air of the vehicle;an inside air flow rate-regulating valve for regulating the flow rate of a gas flowing through this inside air flow passage;an air-conditioning air ...

Warming feature for aircraft fuel cells

A system and method for warming a fuel cell on an aircraft, the system includes at least one fuel cell. The fuel cell includes an anode and a cathode for creating thermal and electrical energy. A temperature sensor measures a first temperature of the fuel cell. A control unit is coupled to the temperature sensor. The control unit increases the first temperature to a second temperature in response to the first temperature being at least equal to a selected temperature threshold. Increasing of the first temperature is indicative of the control unit operating in a warming mode. The second temperature is higher than the selected temperature threshold.

FUEL CELL SYSTEM AND METHOD OF OPERATING THE SAME

A fuel cell system includes: a fuel cell; a cooling water passage for cooling the fuel cell; a cooling water tank; a recovered water tank configured to store water produced in the fuel cell system; a water circulating passage configured to allow water circulating between the recovered water tank and the cooling water tank to flow therethrough; a power supply detection unit; a temperature detector provided in at least one of the cooling water passage, the cooling water tank, the recovered water tank, and the water circulating passage; and a controller configured to execute a temperature increasing process for increasing the temperature detected by the temperature detector if the power supply detection unit detects a change from a state in which electric power is not supplied to a state in which the electric power is supplied. 1. A fuel cell system including a fuel cell , the fuel cell system comprising:a cooling water passage configured to allow cooling water for cooling the fuel cell to flow therethrough;a cooling water tank provided in the cooling water passage and configured to store the cooling water;a recovered water tank configured to store water produced in the fuel cell system;a water circulating passage configured to allow water circulating between the recovered water tank and the cooling water tank to flow therethrough;a power supply detection unit configured to detect electric power supply from a power supply utility to the fuel cell system;a temperature detector, provided in at least one of the cooling water passage, the cooling water tank, the recovered water tank, and the water circulating passage, the temperature detector being configured to detect a temperature of water; anda controller configured to execute a temperature increasing process for increasing the temperature detected by the temperature detector to a predetermined temperature or higher if the power supply detection unit detects a change from a state in which the electric power is not ...

COOLANT CYCLE FOR A FUEL CELL SYSTEM AND METHOD FOR OPERATING A COOLANT CYCLE

A coolant circuit () for a fuel cell system of a vehicle. Coolant () is able to flow through a coolant line () in the cooling operation, and an ion exchanger module () can be fluidically coupled with the coolant line (). The coolant circuit () has at least one closing element (), formed to close the coolant line (). The closing of the same via the at least one closing element () is effected by an uncoupling of the ion exchanger module () from the at least one coolant line (). Furthermore, the invention relates to a method to operate the coolant circuit (). 1310418202432373382024323743. A coolant circuit for a fuel cell system having at least one coolant line () , through which coolant () is able to flow in the cooling operation , and with which an ion exchanger module () can be fluidically coupled , wherein the coolant circuit () comprises at least one closing element ( , , , , ) , formed to close the at least one coolant line () , wherein the closing of the at least one coolant line () by the at least one closing element ( , , , , ) is effected by an uncoupling of the ion exchanger module () from the at least one coolant line ().2820243237343. A coolant circuit according to claim 1 , wherein the at least one closing element ( claim 1 , claim 1 , claim 1 , claim 1 , ) is formed to uncover the at least one coolant line () claim 1 , wherein the uncovering can be effected through the fluidic coupling of the ion exchanger module () with the at least one coolant line ().3. A coolant circuit according to claim 1 , wherein the at least one closing element comprises{'b': '8', 'a non-return valve () and/or'}{'b': '20', 'a closing flap () and/or'}{'b': '24', 'a turntable () and/or'}a circle segment and/oran in particular cylindrical hollow body and/or{'b': '32', 'a bolt () and/or'}{'b': '37', 'a slider ().'}48202432374. A coolant circuit according to claim 1 , comprising at least one actuating element to actuate the at least one closing element ( claim 1 , claim 1 , claim 1 , ...

ELECTRIC POWER SUPPLY SYSTEM

There are provided: a power supply provided with a fuel cell; a fuel cell vehicle; an inverter device capable of supplying electric power that is supplied from the fuel cell to an external load; a radiator; a radiator fan; a dryness detection device that detects a dry condition of the fuel cell; and an ECU that control supply of electric power to the external load. The ECU drives the radiator fan when the dryness detection device detects dryness of the fuel cell while electric power is being supplied from the fuel cell to the external load. 1. An electric power supply system comprising:a power supply provided with a fuel cell that generates electric power with a fuel gas and an oxidant gas;a vehicle that is driven with electric power supplied from the power supply;an external power feeding circuit capable of supplying electric power supplied from the power supply to an external load;a radiator that releases heat of a coolant for cooling the fuel cell;a radiator fan that blows air to the radiator;a dryness detection device that detects a dry condition of the fuel cell; anda control device that controls supply of electric power to the external load, whereinthe control device drives the radiator fan in a case where the dryness detection device detects dryness of the fuel cell while electric power is being supplied from the power supply to the external load.2. The electric power supply system according to claim 1 , whereinwhen the dryness detection device is not detecting dryness of the fuel cell, the control device drives the radiator fan at a rotation speed that corresponds to electric power consumption of the external load, and when the dryness detection device detects dryness of the fuel cell, it drives the radiator fan at a highest rotation speed.3. The electric power supply system according to claim 1 , whereinthe dryness detection is performed by the dryness detection device measuring an impedance of the fuel cell, andthe dryness detection device detects a ...

DRIVING CONTROL METHOD AND SYSTEM OF FUEL CELL SYSTEM

A driving control system and method of a fuel cell system are provided. The driving control method includes determining, by a controller, when a fuel cell stack is in a water shortage, based on an oversupply of air to the fuel cell stack or a deterioration of the fuel cell stack. A diagnostic level is then assigned to the fuel cell system and at least one recovery driving mode that corresponds to the assigned diagnostic level is performed. 1. A driving control method of a fuel cell system , comprising:determining, by a controller, when a fuel cell stack is in a water shortage, based on an oversupply of air to the fuel cell stack or a deterioration of the fuel cell stack;assigning, by the controller, a diagnostic level to the fuel cell system based on the determination; andperforming, by the controller, at least one recovery driving mode that corresponds to the assigned diagnostic level.2. The method of claim 1 , wherein the assigning process includes:classifying, by the controller, a first status as a first diagnostic level, the first status being a status under which the oversupply of air to the fuel cell stack is predicted due to a breakdown of the fuel cell system.3. The method of claim 1 , wherein the assigning process includes:classifying, by the controller, a second status as a second diagnostic level, the second status being a status under which the fuel cell stack is predicted to be in the water shortage due to the oversupply of air to the fuel cell stack.4. The method of claim 3 , wherein the second status is determined based on either a change in oversupply of air to the fuel cell stack to output current consumption of the fuel cell stack or a change of residual water in a cathode calculated from an estimated value of relative humidity in the cathode of the fuel cell stack.5. The method of claim 3 , wherein the second status is a status in which a value calculated from oversupply of air claim 3 , which is a difference between an amount of air required for ...

DRIVING CONTROL METHOD AND SYSTEM OF FUEL CELL VEHICLE

A driving control method and system for a fuel cell vehicle are provided. The driving control method includes monitoring, by a vehicle controller, information regarding vehicle conditions and entering a minimum driving mode when the monitored vehicle conditions meet minimum-driving-mode entry conditions. A temperature of a fuel cell stack detected and then adjusted when the determined temperature of the fuel cell stack is different from a preset target stack temperature value, to match the temperature of the fuel cell stack with the preset target stack temperature. 1. A driving control method for a fuel cell vehicle , comprising:monitoring, by a vehicle controller, information regarding vehicle conditions;entering, by the vehicle controller, a minimum driving mode when the monitored vehicle conditions meet minimum-driving-mode entry conditions, and determining, by the vehicle controller, a temperature of a fuel cell stack; andadjusting, by the vehicle controller, the temperature of the fuel cell stack, when the determined temperature of the fuel cell stack is different from a preset target stack temperature value, to match the temperature of the fuel cell stack with the preset target stack temperature.2. The driving control method according to claim 1 , wherein the temperature adjustment includes:interrupting, by the vehicle controller, coolant flowing from a radiator to the fuel cell stack when the temperature of the fuel cell stack is less than the preset target stack temperature value.3. The driving control method according to claim 1 , wherein the temperature adjustment includes:maintaining, by the vehicle controller, a revolutions per minute (RPM) of a cooling pump at a preset RPM value when the temperature of the fuel cell stack is less than the preset target stack temperature value.4. The driving control method according to claim 1 , wherein the temperature adjustment includes:increasing, by the vehicle controller, a revolutions per minute (RPM) of a cooling ...

COOLING SYSTEM AND OPERATING METHOD OF COOLING SYSTEM

A cooling system of a vehicle having a fuel cell stack includes a pump for circulating a coolant in a coolant line passing through the fuel cell stack, a heater disposed on the coolant line for heating the coolant by electric power supplied by a drive motor of the vehicle, and a controller for operating the heater by a surplus electric power generated by the drive motor when a heat generation amount of the fuel cell stack is less than a first threshold value and a rotation speed of the pump is above a second threshold value, and for turning off the heater when the heat generation amount of the fuel cell stack is less than the first threshold value and the rotation speed of the pump is less than the second threshold value. 1. A cooling system of a vehicle having a fuel cell stack , comprising:a pump for circulating a coolant in a coolant line passing through the fuel cell stack;a heater disposed on the coolant line for heating the coolant by electric power supplied by a drive motor of the vehicle; anda controller for operating the heater by a surplus electric power generated by the drive motor when a heat generation amount of the fuel cell stack is less than a first threshold value and a rotation speed of the pump is above a second threshold value, and for turning off the heater when the heat generation amount of the fuel cell stack is less than the first threshold value and the rotation speed of the pump is less than the second threshold value.2. The cooling system of claim 1 , further comprising a temperature sensor disposed on the coolant line for detecting a coolant temperature of the coolant claim 1 ,wherein the controller determines, based on the heat generation amount of the fuel cell stack and the coolant temperature, whether a feed-forward control is to be performed, the feed-forward control being a mode in which the rotation speed of the pump is controlled according to the heat generation amount of the fuel cell stack and an ambient temperature.3. The ...

SPRAYING WATER IN RAM AIR FOR FUEL CELL POWER SYSTEMS IN AIRCRAFT

A fuel cell power system including at least one fuel cell, a ram air system and a cooling circuit in which coolant is intended to circulate for regulating a temperature of the at least one fuel cell. The cooling circuit comprises a ram air heat exchanger in the ram air system and the ram air system comprises a nozzle. The fuel cell power system further comprises a water tank and the fuel cell power system is arranged to flow water from the water tank to the ram air system so as to spray water in ram air via the nozzle. Thus, dimensioning of the ram air system which includes the ram air heat exchanger is reduced. 1. A fuel cell power system comprisingat least one fuel cell,a ram air system, anda cooling circuit configured to receive a circulating coolant to regulate a temperature of the at least one fuel cell, the cooling circuit comprising a ram air heat exchanger in the ram air system,wherein the ram air system comprises a nozzle, and the fuel cell power system further comprises a water tank and the fuel cell power system is arranged to flow water from the water tank to the ram air system so as to spray water in ram air via the nozzle,wherein the fuel cell power system further comprises a controller, referred to as a cooling controller, and a water flow regulating device configured to regulate a temperature of the coolant by adjusting operation of the water flow regulating device to regulate a flow of water from the water tank to the ram air system,wherein the cooling controller is configured to operate in a first operating mode when regulating the temperature of the coolant according to a first target temperature and to operate in a second operating mode when regulating the temperature of the coolant according to a second target temperature,wherein the cooling controller is configured to switch from the first operating mode to the second operating mode when a first event is received, wherein the first event indicates that the fuel cell power system should prepare ...

CONTROL OF FUEL CELL COOLING SYSTEM IN A VEHICLE

A fuel cell system in a vehicle includes a fuel cell stack and a cooling system for cooling the fuel cell stack. The cooling system has a radiator and at least one pump configured to supply coolant to the fuel cell stack. A controller operates the cooling system to actively cool the fuel cell stack while the vehicle is shut down in response to conditions indicating that the next time the vehicle will be started, it will be a cold start. The controller can then, subsequent to initiating the cooling, purge the fuel cell stack. 1. A vehicle comprising:a fuel cell stack;a cooling system having a radiator and at least one pump configured to supply coolant to the fuel cell stack; andat least one controller programmed to operate the cooling system to actively cool the fuel cell stack while the vehicle is shut down in response to an anticipated upcoming cold start.2. The vehicle of claim 1 , wherein the operation of the cooling system includes activating radiator fans.3. The vehicle of claim 1 , wherein the operation of the cooling system includes operating the at least one pump to send the coolant to the fuel cell stack.4. The vehicle of claim 1 , wherein the anticipated upcoming cold start is defined at least in part by stored driving history.5. The vehicle of claim 4 , wherein the stored driving history includes stored data indicating a plurality of times and locations in which the vehicle was started.6. The vehicle of further comprising a receiver configured to receive data indicative of a weather forecast claim 1 , wherein the anticipated upcoming cold start is defined at least in part by the weather forecast.7. The vehicle of claim 1 , wherein the at least one controller is further programmed to disable the cooling system in response to an amount of time of cooling system operation exceeding a maximum time threshold.8. The vehicle of further comprising a temperature sensor configured to detect a coolant temperature claim 1 , wherein the at least one controller is ...

Fuel Cell Flow Field Design For Thermal Management

Fuel cell assemblies comprising at least one thermally compensated coolant channel are provided. The thermally compensated coolant channel has a cross-sectional area that decreases in the coolant flow direction along at least a portion of the channel length. In some embodiments, such thermally compensated coolant channels can be used to provide substantially uniform heat flux, and substantially isothermal conditions, in fuel cells operating with substantially uniform current density. 1. A fuel cell assembly comprising: (i) a first anode;', '(ii) a first cathode;', '(iii) a first proton exchange membrane electrolyte interposed between said first anode and said first cathode;', '(iv) a first anode flow field plate adjacent to said first anode, said first anode flow field plate comprising a first anode flow channel for directing a fuel to said first anode; and', '(v) a first cathode flow field plate adjacent to said first cathode, said first cathode flow field plate comprising a first cathode flow channel for directing an oxidant to said first cathode, wherein a cross-sectional area of said first cathode flow channel decreases in a flow direction of said oxidant along at least a portion of the length of said first cathode flow channel;, '(a) a first fuel cell comprising (i) a second anode;', '(ii) a second cathode;', '(iii) a second proton exchange membrane electrolyte interposed between said second anode and said second cathode;', '(iv) a second anode flow field plate adjacent to said second anode, said second anode flow field plate comprising a second anode flow channel for directing said fuel to said second anode; and', '(v) a second cathode flow field plate adjacent to said second cathode, said second cathode flow field plate comprising a second cathode flow channel for directing said oxidant to said second cathode; and, '(b) a second fuel cell comprising(c) a thermally compensated coolant channel interposed between said first cathode flow field plate and said ...

FUEL CELL SYSTEM

A fuel cell system capable of improving the chemical durability of a membrane electrode assembly by compensating for the amount of an antioxidant lost within the electrolyte membrane or electrode of the fuel cell stack in such a manner that the antioxidant is provided from an antioxidant supply device, provided in a fuel processing system and/or an air processing system, to a fuel cell stack, in preparation for a case where the antioxidant within the electrolyte membrane or electrode is lost due to the dissolution or migration characteristic of the antioxidant. 1. A fuel cell system comprising:an antioxidant supply device positioned at a predetermined location of a fuel processing system (FPS) for supplying hydrogen to a fuel cell stack, a predetermined location of an air processing system (APS) for supplying air to the fuel cell stack, or a predetermined location of the FPS and the APS; anda controller configured to determine when an antioxidant needs to be further supplied to the fuel cell stack, to control the antioxidant to be supplied from the antioxidant supply device positioned at the predetermined location of the FPS or the APS to the fuel cell stack, or to control the antioxidant to be supplied from the antioxidant supply device positioned at the predetermined location of the FPS and the APS to the fuel cell stack.2. The fuel cell system of claim 1 , wherein a first antioxidant supply device positioned at the predetermined location of the FPS in the antioxidant supply device is positioned upstream or downstream of an ejector on a hydrogen supply line of the FPS claim 1 , or upstream of the ejector on a hydrogen recycle line claim 1 , or a location directly coupled to the ejector.3. The fuel cell system of claim 1 , wherein the controller is configured to determine that the antioxidant needs to be further supplied to the fuel cell stack either when a predetermined time of operation of the fuel stack has expired or when a vehicle on which the fuel cell stack ...

CONTROL SYSTEM AND CONTROL METHOD FOR FUEL CELL COOLING

A control system for fuel cell cooling is provided. The system includes a fuel cell stack, a coolant circulation line connected to the fuel cell stack, and a heat exchange device provided in the coolant circulation line. A bypass line bypasses the heat exchange device. A temperature adjusting device adjusts a ratio between coolant flowing into the heat exchange device of the coolant circulation line and coolant flowing into the bypass line. A temperature estimator estimates a temperature of the coolant of the coolant circulation line at a point before the bypass line joins the coolant circulation line after the coolant passes through the heat exchange device. An opening degree controller operates the temperature adjusting device using the temperature of the coolant estimated by the temperature estimator and the temperature of the coolant at a point at which the coolant flows into the fuel cell stack. 1. A control system for fuel cell cooling , comprising:a fuel cell stack into which hydrogen and oxygen flow and which react with each other, and having a cooling flow path in which coolant flows between separators;a coolant circulation line connected to the cooling flow path of the fuel cell stack and in which coolant flows;a heat exchange device provided in the coolant circulation line and configured to cool coolant of the coolant circulation line through heat-exchange with the outside;a bypass line branched from the coolant circulation line at a point before coolant flows into the heat exchange device and joining the coolant circulation line by bypassing the heat exchange device;a temperature adjusting device disposed at a point where the bypass line is branched from the coolant circulation line or a point where the bypass line joins the coolant circulation line and configured to adjust a ratio between coolant flowing into the heat exchange device of the coolant circulation line and coolant flowing into the bypass line;a temperature estimator configured to estimate a ...

DEVICE AND METHOD FOR IMPROVING STACK PERFORMANCE OF FUEL CELL SYSTEM

A device and method for improving stack performance of a fuel cell system are provided. The device includes a fuel cell controller that operates a stack of a normal-pressure fuel cell system. When the fuel cell controller determines that an operating state of the stack is normal and a current intake air pressure is decreased as a result of monitoring the current intake air pressure, a current output, and an exterior air temperature of the stack, the fuel cell controller increases the amount of air to be supplied into the stack by adjusting a range of a theoretical air ratio which is a theoretical ratio of an air amount to a coolant temperature in the stack. 1. A device for improving stack performance of a fuel cell system , comprising:a fuel cell controller configured to operate a stack of a normal-pressure fuel cell system,wherein when the fuel cell controller determines that an operating state of the stack is normal and a current intake air pressure is decreased as a result of monitoring the current intake air pressure, a current output, and an exterior air temperature of the stack, the fuel cell controller is configured to increase the amount of air to be supplied into the stack by adjusting a range of a theoretical air ratio which is a theoretical ratio of an air amount to a coolant temperature in the stack.2. The device of claim 1 , wherein the fuel cell controller is configured to reduce the range of the theoretical air ratio by fixing an upper limit value of the theoretical air ratio and increasing a lower limit value of the theoretical air ratio.3. The device of claim 2 , wherein the fuel cell controller is configured to increase the lower limit value of the theoretical air ratio by adding a theoretical air ratio compensation value to the lower limit value of the theoretical air ratio.4. The device of claim 3 , wherein the theoretical air ratio compensation value is a value that is increased in proportion to a decrease in intake air pressure of the stack.5. ...

Fuel cell system

A fuel cell system includes a plurality of electrical components that are supplied with electric power generated by a fuel cell, a refrigerant circuit that cools the fuel cell using a refrigerant, a tank that is connected to the refrigerant circuit, stores the refrigerant, and is replenished with the refrigerant, a detecting unit that detects an insulation resistance value of the fuel cell system, and an identification unit that identifies at what position of the fuel cell system the insulation resistance value has decreased when it is detected that the insulation resistance value has decreased. The detecting unit performs a process of determining whether the decrease in insulation resistance value is temporary when the identified position is the fuel cell and determines that there is no failure requiring repair when the decrease in insulation resistance value is temporary.

THERMAL MANAGEMENT SYSTEM OF FUEL CELL VEHICLE

A thermal management system of a fuel cell vehicle includes a cold start loop which heats a coolant that flows through a fuel cell during a cold start of the fuel cell, and a cooling loop which moves a coolant that cools the fuel cell. 1. A thermal management system of a fuel cell vehicle , comprising:a cold start loop which heats a coolant that flows through a fuel cell during a cold start of the fuel cell; anda cooling loop which moves a coolant that cools the fuel cell.2. The thermal management system of claim 1 , further comprising a variable directional control valve which changes a flow direction of the coolant in the cold start loop.3. The thermal management system of claim 2 , wherein the cold start loop comprises:a pump which pumps a coolant that flows from the fuel cell;a deionizer which filters ions of a coolant that flows from the pump; anda heater which heats a coolant that flows from the deionizer.4. The thermal management system of claim 2 , wherein the cooling loop comprises:a pump which pumps a coolant that flows from the fuel cell; anda radiator which cools a coolant flowing from the pump.5. The thermal management system of claim 2 , wherein the cooling loop further comprises a 3-way valve which selects from the coolant flowing from the pump and a coolant flowing from the radiator to provide the selected coolant to the fuel cell.6. The thermal management system of claim 2 , wherein the thermal management system further comprises a controller which controls an operation of the variable directional control valve.7. The thermal management system of claim 3 , wherein the variable directional control valve comprises:a first port which is connected to an inlet of the fuel cell;a second port which is connected to an outlet of the fuel cell;a third port which is connected to the heater;a fourth port which is connected to the pump;a first internal flow path which rotates to connect the first port and the third port or to connect the second port and the ...

Fuel cell system

The present invention relates to a fuel cell system comprising a fuel supply unit, at least one high-temperature fuel cell having a cathode and an anode and an electrolyte between the cathode and anode. The cathode has a cathode supply line and the anode has an anode supply line, wherein the anode is fluidically connected via the anode supply line to the fuel supply unit. Furthermore, a reforming device is arranged in the anode supply line. In addition, an anode exhaust gas line is provided for at least discharging anode exhaust gas from the anode. The fuel cell system has an exhaust gas heat exchanger for cooling exhaust gas and a recirculation conveyor for returning anode exhaust gas to the reforming device. The recirculation conveyor and the exhaust gas heat exchanger are connected to one another in fluid communication for respective cooling via a common cooling circuit, which has a central cooling fluid store as a fluid source with a heat exchanger and in which cooling fluid can be circulated in a cooling line. In addition, the cooling circuit has at least one pump for conveying cooling fluid. The invention further relates to a method for cooling a fuel cell system.

Fuel cell system, control apparatus, and control method

A fuel cell system includes a fuel cell, a circuit, a pump, a pressure regulating valve, and a control apparatus. The fuel cell includes a plurality of membrane electrode assemblies and a separator. The separator has a gas channel and a coolant channel. The circuit is coupled to the coolant channel and allows a coolant to circulate therethrough. The pump delivers the coolant toward the coolant channel. The pressure regulating valve adjusts a pressure of the coolant in the coolant channel. The control apparatus controls a flow rate of the coolant in the coolant channel by controlling a rotational speed of the pump on the basis of a temperature of the fuel cell, and controls the pressure of the coolant in the coolant channel by controlling a position of the pressure regulating valve on the basis of a pressure of gas in the gas channel.

METHODS AND SYSTEMS FOR CONTROLLING WATER IMBALANCE IN AN ELECTROCHEMICAL CELL

A system and method of controlling water imbalance in an electrochemical cell is provided. The method includes determining a present water imbalance in the electrochemical cell by summing a waterand a waterless a water. Waterrepresents an amount of water introduced into the electrochemical cell by an oxidant feed gas; waterrepresents an amount of water created by the electrochemical cell from the electrochemical reaction; and waterrepresents an amount of water discharged from the electrochemical cell by an oxidant exhaust gas. The method includes tracking a cumulative water imbalance during operation of the electrochemical cell by repeatedly determining the present water imbalance and continuing to sum the results during operation. And, the method also includes adjusting a flow rate of the oxidant feed gas entering the electrochemical cell based on the cumulative water imbalance. 125-. (canceled)26. An electrochemical cell system , comprising:an electrochemical cell;a plurality of oxidant gas inlet sensors, an oxidant gas exhaust sensor, a coolant inlet sensor, a coolant exhaust sensor, and current transducer; [{'sub': in', 'created', 'out, 'claim-text': [{'sub': 'in', 'wateris an amount of water introduced into the electrochemical cell by an oxidant feed gas;'}, {'sub': 'created', 'wateris an amount of water created by the electrochemical cell from the electrochemical reaction; and'}, {'sub': 'out', 'wateris an amount of water discharged from the electrochemical cell by an oxidant exhaust gas;'}], 'determine a present water imbalance in the electrochemical cell by summing a waterand a waterless a water, wherein, 'track a cumulative water imbalance during operation of the electrochemical cell by repeatedly determining the present water imbalance and continuing to sum the results during operation;', 'adjust a flow rate of the oxidant feed gas entering the electrochemical cell based on the cumulative water imbalance; and, 'a controller configured toa coolant pump ...

MEDIA MANAGEMENT PLATE COMPRISING WATER TRAP AND WATER RESERVOIR, AND FUEL CELL SYSTEM

The invention relates to a media management plate () for a fuel cell assembly (), a fuel cell system () comprising the media management plate and a fuel cell assembly, and a method of operating a fuel cell system () comprising a fuel cell assembly () and the media management plate (). All lines for supplying and discharging the fuel cell media and all devices necessary for treating the fuel cell media are integrated in the media management plate (). The media management plate () can be heated by means of coolant and is functional both when oriented vertically and horizontally. 123-. (canceled)24. A media management plate for a fuel cell assembly , comprising: a first major surface that attaches to the fuel cell assembly, and', 'an opposite second major surface,, 'a plate base body comprising'} an anode operating gas line, a cathode operating gas line and a coolant line extending from the second major surface of the plate base body to the first major surface, to supply the anode operating gas, the cathode operating gas and the coolant to the fuel cell assembly, and', 'an anode exhaust gas line, a cathode exhaust gas line and a used coolant line extending from the first major surface of the plate base body to the second major surface, to discharge anode exhaust gas, cathode exhaust gas and used coolant from the fuel cell assembly,, 'a media line system that supplies the fuel cell media with an anode operating gas, a cathode operating gas and a coolant to the fuel cell assembly, and that discharges used fuel cell media from the fuel cell assembly, the media line system comprising'}a water separator with a water reservoir to separate liquid water from the anode exhaust gas, wherein the water reservoir comprises an inlet opening and an outlet opening for the anode exhaust gas and the water,a channel that drains the water from the water reservoir,valve seats, measuring devices and regulating and control devices on the second major surface of the plate base body in ...

SYSTEMS AND METHODS FOR INITIATING VOLTAGE RECOVERY IN A FUEL CELL SYSTEM

Systems and methods for initiating voltage recovery procedures in a fuel cell system based in part on an estimated specific activity over the life of a fuel cell catalyst are presented. In certain embodiments, SA loss of catalyst and electrochemical surface area loss of a FC system may be estimated. An output voltage of the FC system may be estimated based on the estimated SA loss and the electrochemical surface area loss. An amount of recoverable voltage loss may be determined based on a comparison between the estimated output voltage and a measured output voltage. Based on the determined amount of recordable voltage loss, a FC system control action (e.g., a voltage recovery procedure) may be initiated. 1. A method of determining recoverable voltage loss in a fuel cell system performed by a system comprising a processor and a communicatively-coupled non-transitory computer readable storage medium storing instructions that , when executed by the processor , cause the processor to perform the method comprising:estimating specific activity loss of a catalyst of a fuel cell system;estimating electrochemical surface area loss of the fuel cell system;estimating an output voltage of the fuel cell system based on the estimated specific activity loss and the electrochemical surface area loss;measuring an actual output voltage of the fuel cell system;determining an amount of recoverable voltage loss based on a comparison between the estimated output voltage and the actual output voltage; andimplementing at least one fuel cell system control action based on the determined amount of recoverable voltage loss.2. The method of claim 1 , wherein determining the amount of recoverable voltage loss comprises determining that a difference between the estimated output voltage and the actual output voltage exceeds a threshold claim 1 , and wherein the control action comprises initiating a voltage recovery procedure in the fuel cells system.3. The method of claim 2 , wherein initiating ...

FUEL CELL SYSTEM

A fuel cell system includes a fuel cell and a fuel cell controller. The fuel cell controller is configured to control a cooler based on a command from a host controller, the cooler being configured to cool the fuel cell. When a predetermined condition regarding the fuel cell is satisfied, the fuel cell controller controls the cooler according to a procedure predetermined in the fuel cell controller, regardless of the command from the host controller. 1. A fuel cell system , comprising:a fuel cell; anda fuel cell controller configured to control a cooler based on a command from a host controller, the cooler being configured to cool the fuel cell, wherein the fuel cell controller is configured to, when a predetermined condition regarding the fuel cell is satisfied, control the cooler according to a procedure predetermined in the fuel cell controller, regardless of the command from the host controller.2. The fuel cell system according to claim 1 , wherein:the predetermined condition is a condition regarding a temperature of the fuel cell; andthe fuel cell controller is configured to, when the temperature of the fuel cell falls below a predetermined lower limit temperature, operate the cooler with minimum cooling capacity until the temperature of the fuel cell reaches a predetermined lower limit allowable temperature, regardless of the command from the host controller, the lower limit allowable temperature being higher than the lower limit temperature.3. The fuel cell system according to claim 1 , wherein:the predetermined condition is a condition regarding a temperature of the fuel cell; andthe fuel cell controller is configured to, when the temperature of the fuel cell becomes higher than a predetermined upper limit temperature, operate the cooler with maximum cooling capacity regardless of the command from the host controller.4. The fuel cell system according to claim 1 , wherein:the predetermined condition is a condition that the fuel cell controller receives a ...

FUEL CELL SYSTEM

A fuel cell system that includes: an ion exchanger that is provided at a circulation path and that restores insulation resistance of a coolant; a detector that is provided at the circulation path at a downstream side of a radiator in a circulation direction of the coolant and that detects conductivity of the coolant; and a controller that is electrically connected to the detector and a pump and that controls driving of at least the pump. In a state in which the pump is stopped and in a case in which the insulation resistance of the coolant, which is obtained from the conductivity of the coolant that has been detected by the detector, becomes equal to or less than a specific value, the controller starts the driving of the pump such that the coolant passes through the ion exchanger. 1. A fuel cell system , comprising:a fuel cell;a circulation path configured to circulate a coolant that cools the fuel cell;a pump that is provided at the circulation path and that causes the coolant to circulate;a radiator that is provided at the circulation path and that dissipates heat from the coolant;an ion exchanger that is provided at the circulation path and that restores insulation resistance of the coolant;a detector that is provided at the circulation path at a downstream side of the radiator in a circulation direction of the coolant and that detects conductivity of the coolant; anda controller that is electrically connected to the detector and the pump and that controls driving of at least the pump,in a state in which the pump is stopped and in a case in which the insulation resistance of the coolant, which is obtained from the conductivity of the coolant that has been detected by the detector, becomes equal to or less than a specific value, the controller starting the driving of the pump such that the coolant passes through the ion exchanger.2. The fuel cell system of claim 1 , wherein the controller starts the driving of the pump using power from a battery that is provided ...

Energy regeneration in fuel cell-powered datacenter with thermoelectric generators

A method of controlling energy in a datacenter includes receiving a fuel cell operating percentage of an operating capacity of the fuel cell, receiving a fuel cell exhaust temperature, receiving a hot aisle air temperature from a hot aisle of a server computer, determining a temperature delta between the hot aisle air temperature and the fuel cell exhaust temperature, and then allocating virtual machine placements to change a server user percentage relative to a server user capacity percentage target value to optimize the fuel cell operating percentage relative to the fuel cell efficiency target value, the temperature delta relative to the thermoelectric generator efficiency target value, and the server user percentage relative to the server user capacity percentage target value.

Fuel cell system

To provide a fuel cell system configured to achieve both rapid cooling of a fuel cell at high temperatures and rapid heating of the fuel cell at the time of system start-up. In the fuel cell system, by controlling a three-way valve, a controller switches to any one of the following circulation systems: radiator circulation in which a refrigerant flows to a radiator through a first flow path, and third flow path circulation in which the refrigerant bypasses the radiator and flows to a second flow path through a third flow path; when the temperature of the refrigerant is equal to or less than a low temperature threshold, the controller switches from the radiator circulation to the third flow path circulation and closes a first valve; and when the temperature of the refrigerant becomes equal to or more than a high temperature threshold, the controller opens the first valve and circulate the refrigerant to flow through the reserve tank.

FUEL-CELL VEHICLE

A fuel-cell vehicle includes a fuel cell and a secondary battery. A circulation flow passage causes a coolant to circulate between the fuel cell and a radiator. A bypass flow passage passes through the secondary battery. One end of the bypass flow passage is connected to an upstream side of the radiator and the other end thereof is connected to a downstream side of the radiator of the circulation flow passage. A controller switches a switching valve such that the coolant flows to the radiator side when a coolant temperature is higher than a predetermined temperature threshold value, and switches the switching valve such that the coolant flows to the bypass flow passage side when the coolant temperature is lower than the temperature threshold value. 1. A fuel-cell vehicle comprising:a fuel cell;a secondary battery;a radiator;a circulation flow passage configured to cause a coolant to circulate between the fuel cell and the radiator;a bypass flow passage passing through the secondary battery, one end of the bypass flow passage being connected to the circulation flow passage on an upstream side of the radiator and the other end of the bypass flow passage being connected to the circulation flow passage on a downstream side of the radiator;a switching valve configured to switch a direction in which the coolant flows between a radiator side and a bypass flow passage side, the switching valve being provided at a junction between the circulation flow passage and the bypass flow passage on an upstream side of the radiator;a temperature sensor configured to measure a temperature of a coolant passed through the fuel cell; anda controller configured to switch the switching valve to the radiator side when the temperature of the coolant is higher than a predetermined temperature threshold value, the controller being configured to switch the switching valve to the bypass flow passage side when the temperature of the coolant is lower than the predetermined temperature threshold ...

Thermal Management System for Fuel Cell Vehicle

A thermal management system for a fuel cell vehicle is provided. The thermal management system includes a fuel cell stack, a heater configured to use power generated by the fuel cell stack, a radiator configured to cool a coolant, a pump configured to circulate the coolant, and a valve configured to control a temperature of the coolant by adjusting a flow rate of the coolant supplied to the pump from at least one of the fuel cell stack, the heater, or the radiator.

FUEL CELL SYSTEM, FUEL CELL MOUNTABLE VEHICLE AND METHOD OF CONTROLLING FUEL CELL SYSTEM

A fuel cell system comprises: a fuel cell; a cooling liquid supply flow path for supplying cooling liquid to the fuel cell; a radiator for cooling the cooling liquid; a first temperature sensor, provided at an outlet of the radiator, for measuring a temperature of the cooling liquid; an ambient temperature sensor; and a controller. The controller executes: estimating a temperature of the cooling liquid inside the cooling liquid supply flow path based on an ambient temperature measured by the ambient temperature sensor; acquiring a temperature of the cooling liquid inside the cooling liquid supply flow path based on the temperature measured by the first temperature sensor after it is determined that the cooling liquid within the radiator has reached the first temperature sensor; and adjusting a flow rate of the cooling liquid based on the estimated temperature or the acquired temperature of the cooling liquid. 1. A fuel call system to be mounted on a fuel cell mountains vehicle , comprising:a fuel cell;a cooling liquid supply flow path for supplying cooling liquid to the fuel cell;a radiator for cooling the cooling liquid;a first temperature sensor, provided at an outlet of the radiator, for measuring a temperature of the cooling liquid;an ambient temperature sensor; and estimating a temperature of the cooling liquid inside the cooling liquid supply flow path based on an ambient temperature measured by the ambient temperature sensor;', 'acquiring a temperature of the cooling liquid inside the cooling liquid supply flow path based on the temperature measured by the first temperature sensor after it is determined that the cooling liquid within the radiator has reached the first temperature sensor; and', 'adjusting a flow rate of the cooling liquid based on the estimated temperature or the acquired temperature of the cooling liquid., 'a controller, wherein the controller executes2. The fuel cell system in accordance with claim 1 , further comprising:a cooling liquid ...

FUEL CELL SYSTEM

A fuel cell system includes a control unit configured to perform air-conditioning-system preparation control, wherein, under the air-conditioning-system preparation control, when an air conditioning system is not requested to heat air, it is determined whether or not a coolant within a coolant circulation passage is capable of being supplied to an air conditioning circuit, when the coolant within the coolant circulation passage is not capable of being supplied to the air conditioning circuit, the heater is operated to maintain a first predetermined temperature or higher of the coolant within the air conditioning circuit, and When the coolant within the coolant circulation passage is capable of being supplied to the air conditioning circuit, the air-conditioning water pump is operated to draw the coolant from the coolant circulation passage into the air conditioning circuit and to maintain the first predetermined temperature or higher of the coolant within the air conditioning circuit. 1. A fuel cell system comprising:a fuel cell stack;a coolant circulation passage through which a coolant for cooling the fuel cell stack circulates;an air conditioning system including an air conditioning circuit that is connected to the coolant circulation passage and shares the coolant circulating through the coolant circulation passage;an air-conditioning water pump causing the coolant to flow through the air conditioning circuit;a heater arranged on the air conditioning circuit; anda control unit configured to perform air-conditioning-system preparation control,wherein, under the air-conditioning-system preparation control,when the air conditioning system is not requested to heat air, it is determined whether or not the coolant within the coolant circulation passage is capable of being supplied to the air conditioning circuit,when the coolant within the coolant circulation passage is not capable of being supplied to the air conditioning circuit, the heater is operated to maintain a ...

APPARATUS AND METHOD FOR CONTROLLING COOLING PUMP OF FUEL CELL SYSTEM

A method and apparatus for controlling a cooling pump of a fuel cell system are provided that improve efficiency of the fuel cell system by variably adjusting idle RPM of a pump that cools down stacks within the fuel cell system, based on temperature and flowrate of coolant The apparatus includes a storage that is configured to store a table in which revolutions per minute (RPM) of the cooling pump corresponding to temperature are recorded and a temperature measurer that is configured to measure temperature of a coolant of fuel cell stacks. In addition, a controller operates a pump driver based on the stored table to adjust the RPM of the cooling pump to correspond to the measured temperature of the coolant 1. An apparatus for controlling a cooling pump of a fuel cell system , comprising:a storage configured to store a table in which revolutions per minute (RPM) of the cooling pump corresponding to temperature are recorded;a temperature measurer configured to measure temperature of a coolant of fuel cell stacks; anda controller configured to operate a pump driver based on the stored table to adjust the RPM of the cooling pump to correspond to the temperature of the coolant as measured by the temperature measurer.2. The apparatus according to claim 1 , wherein the table includes three temperature ranges of a first temperature range claim 1 , a second temperature range and a third temperature range claim 1 , in which the temperature is higher in the order of the third temperature range claim 1 , the second temperature range and the first temperature range claim 1 , while the RPM is lower in the order of the third temperature range claim 1 , the second temperature range and the first temperature range.3. The apparatus according to claim 1 , wherein claim 1 , when the temperature measured by the temperature measurer exceeds a threshold value claim 1 , the controller is configured to maintain the RPM of the cooling pump at a substantially constant level.4. An apparatus ...

FUEL CELL SYSTEM

A fuel cell system includes: a first fuel cell stack and a second fuel cell stack; a supply passage connected to an inlet of oxidant gas in the first fuel cell stack; an discharge passage connected to an outlet of the oxidant gas in the second fuel cell stack; introduction unit that introduces water in the oxidant gas flowing through the discharge passage into the supply passage; and a controller configured to perform refresh control of the first fuel cell stack by lowering voltage of the first fuel cell stack, and operates, during the refresh control, the introduction unit while keeping the second fuel cell stack in an electric power generation state. 1. A fuel cell system , comprising:a first fuel cell stack and a second fuel cell stack each configured to generate electric power through chemical reaction between fuel gas and oxidant gas;a supply passage connected to an inlet of the oxidant gas in the first fuel cell stack;a discharge passage connected to an outlet of the oxidant gas in the second fuel cell stack;an introduction unit configured to introduce water in the oxidant gas flowing through the discharge passage into the supply passage; anda controller configured to perform refresh control of the first fuel cell stack by lowering voltage of the first fuel cell stack, and operate, during the refresh control, the introduction unit while keeping the second fuel cell stack in an electric power generation state.2. The fuel cell system according to claim 1 , wherein when performing the refresh control claim 1 , the controller is configured to lower the voltage of the first fuel cell stack by setting a flow rate of the oxidant gas flowing through the supply passage to be lower than the flow rate of the oxidant gas in a case of making the first fuel cell stack generate the electric power in accordance with electric power requested to the first fuel cell stack and the second fuel cell stack.3. The fuel cell system according to claim 1 , wherein the introduction unit ...

SYSTEM AND METHOD FOR CONTROLLING FUEL CELL

Disclosed is a fuel cell control system including: a fuel cell supplied with each of hydrogen and oxygen and configured to generate electric power by means of a chemical reaction therein; a cooling system having a heat-exchange device capable of exchanging heat with external air, the cooling system being configured such that cooling water circulates therein and exchanges heat with the fuel cell; a temperature sensing unit configured to sense a fuel cell temperature or a cooling water temperature in the cooling system; and a cooling control unit configured to control the cooling system so as to additionally cool the fuel cell when the fuel cell stops generating electric power, if the fuel cell temperature or the cooling water temperature sensed by the temperature sensing unit while the fuel cell generates electric power is equal to or higher than a preconfigured performance degradation temperature. 1. A fuel cell control system comprising:a fuel cell supplied with each of hydrogen and oxygen and configured to generate electric power by means of a chemical reaction therein;a cooling system having a heat-exchange device capable of exchanging heat with external air, the cooling system being configured such that cooling water circulates therein and exchanges heat with the fuel cell;a temperature sensing unit configured to sense a fuel cell temperature or a cooling water temperature in the cooling system; anda cooling control unit configured to control the cooling system so as to additionally cool the fuel cell when the fuel cell stops generating electric power, if the fuel cell temperature or the cooling water temperature sensed by the temperature sensing unit while the fuel cell generates electric power is equal to or higher than a preconfigured performance degradation temperature.2. The fuel cell control system of claim 1 , wherein the temperature sensing unit is configured to measure the temperature of cooling water flowing into the entrance of the fuel cell among ...

FUEL CELL SYSTEM

A fuel cell system includes: a first temperature sensor that measures the temperature of cooling water on the side of a cooling water outlet of a fuel cell; a second temperature sensor that measures the temperature of the cooling water on the side of a cooling water inlet of a water heater for heating the cooling water; a third temperature sensor that measures the temperature of the cooling water on the side of a cooling water outlet of the water heater; a cooling water pump that circulates the cooling water; and a control device. The control device is configured to determine that there is a cooling water leakage when the condition: “measurement temperature T measured by the first temperature sensor≠measurement temperature T measured by the second temperature sensor” or the condition “no temperature difference ΔT between measurement temperature T and measurement temperature T measured by the third temperature sensor” is met. 1. A fuel cell system having a fuel cell , the system comprising:a first temperature sensor that measures a temperature of cooling water on a cooling water outlet side of the fuel cell;a second temperature sensor that measures a temperature of the cooling water on a cooling water inlet side of a water heater that heats the cooling water;a third temperature sensor that measures a temperature of the cooling water on a cooling water outlet side of the water heater;a cooling water pump that circulates the cooling water; anda control device that controls driving of the cooling water pump and the water heater by receiving measurement values from the first, second and third temperature sensors,wherein the water heater and the second and third temperature sensors are arranged above in a direction of gravity relative to the cooling water pump and the first temperature sensor, and{'b': 1', '2', '2', '3, 'wherein the control device is configured to determine that there is a cooling water leakage when a measurement temperature T measured by the first ...

PRECONDITIONING A FUEL CELL USING ROUTE DATA

Methods and systems may provide for technology to predict a future increase in power demand on a fuel cell based on route data associated with a vehicle powered by the fuel cell and reduce an operating temperature of the fuel cell prior to the future increase in power demand. The technology may also provide supplemental power from a battery to the vehicle while the operating temperature of the fuel cell is being reduced. 1. A power subsystem comprising:a fuel cell;a battery; and predict a future increase in power demand on the fuel cell based on route data associated with a vehicle powered by the fuel cell,', 'reduce an operating temperature of the fuel cell prior to the future increase in power demand, and', 'provide supplemental power from the battery to the vehicle while the operating temperature of the fuel cell is being reduced., 'a controller coupled to the fuel cell and the battery, the controller including stored instructions, which when executed by the controller, cause the controller to2. The power subsystem of claim 1 , wherein the reduced operating temperature and the supplemental power are to cause the fuel cell to remain within a target range of operating temperatures while the fuel cell is experiencing the future increase in power demand.3. The power subsystem of claim 1 , wherein to reduce the operating temperature of the fuel cell claim 1 , the instructions claim 1 , when executed claim 1 , cause the controller to provide additional cooling to the fuel cell.4. The power subsystem of claim 1 , wherein to reduce the operating temperature of the fuel cell claim 1 , the instructions claim 1 , when executed claim 1 , cause the controller to reduce an inlet temperature of the fuel cell.5. The power subsystem of claim 1 , wherein providing the supplemental power to the vehicle causes a state of charge of the battery to decrease.6. The power subsystem of claim 1 , wherein the reduced operating temperature and the supplemental power are to prevent the fuel ...

Cooling and gas dehumidifying system, transport means, and method for operating a cooling and gas dehumidifying system

A cooling and gas dehumidifying system comprising a cooling circuit in which a thermal fluid is circulated. The system further comprises a cooling arrangement arranged in the cooling circuit and configured to cool the thermal fluid flowing therethrough. A consumer gives up heat energy to the thermal fluid flowing through the cooling circuit. A gas dehumidifier having a heat exchanger arrangement is configured to be thermally coupled in a gas dehumidifying operating state with the thermal fluid flowing through the cooling circuit downstream of the cooling arrangement and having a first temperature, and thereby give up heat energy to the thermal fluid, and to be thermally coupled in a de-icing operating state with the thermal fluid flowing through the cooling circuit downstream of the consumer and having a second temperature, and thereby absorb heat energy from the thermal fluid, the second temperature being higher than the first temperature.

Apparatus for protecting negative pressure

An apparatus for protecting negative pressure is provided. The apparatus includes a main flow passage that circulates coolant of a vehicle and includes a section where negative pressure is formed therein. A housing is positioned at the section where the negative pressure of the main flow passage is formed and has a communication aperture that communicates with the main flow passage therein. A negative pressure valve is disposed at the inside of the housing to open or close the communication aperture based on the relationship of an exterior pressure and a valve inside pressure to maintain the valve inside pressure above a predetermined reference value.

Heat exchange apparatus for cooling water of fuel cell and fuel cell system including the same

A heat exchange apparatus for cooling water of a fuel cell includes a body, through which a cooling water pipe having cooling water flowing therethrough to be supplied to a fuel cell stack, passes; and a heat accumulator provided in an interior of the body and filled with a PCM heat accumulation material that exchanges heat with the cooling water. The body includes a medium space provided between the cooling water pipe and the heat accumulator such that the heat accumulator is spaced apart from the cooling water pipe. The PCM heat accumulation material exchanges heat with the cooling water by a medium of the medium space.

Wet state control device for fuel cell

A wet state control device for fuel cell includes a priority control unit for preferentially controlling either one of a pressure and a flow rate of cathode gas when a wet state of a fuel cell is adjusted, a water temperature control unit for controlling a temperature of cooling water when the wet state of the fuel cell is not completely adjustable by a control of the priority control unit, and a complementary control unit for controlling the other of the pressure and the flow rate of the cathode gas to complement a response delay of the water temperature control unit.

Partial derivative based feedback controls for pid

A system includes a fuel cell stack having a plurality of fuel cells and designed to receive a fluid and to heat the fluid. The system also includes an actuator to increase or decrease a fluid temperature of the fluid and an ECU. The ECU can determine a temperature control signal corresponding to a desired temperature of the fluid and perform a feedforward control of the actuator to increase or decrease the fluid temperature towards the desired temperature. The ECU can also determine a temperature difference between the fluid temperature and the desired temperature, and can determine a sensitivity that corresponds a change in a parameter value or the actuator position to a change in the fluid temperature. The ECU can also apply the sensitivity to the temperature difference to determine an error signal, and control the actuator based on the error signal.

FUEL CELL SYSTEM

Provided is a fuel cell system that can effectively suppress clogging of a pipe due to freezing of water in a fuel gas supply system thereof without the need for halting the operation of the fuel cells, and thus is highly reliable. When possible freezing of water is detected or presumed to be present downstream of an injector, the amount of a fuel gas to be supplied from a circulation pump that is disposed in a circulation channel is relatively increased compared to the amount of the fuel gas to be supplied from the injector. 1. A fuel cell system comprising:a fuel cell;a fuel gas supply channel adapted to supply a fuel gas to the fuel cell;a fuel supply device adapted to supply the fuel gas to the fuel cell through the fuel gas supply channel;a circulation channel adapted to circulate a fuel off-gas discharged from the fuel cell to the fuel gas supply channel;a circulation pump disposed in the circulation channel and adapted to pressure-feed the fuel off-gas to the fuel gas supply channel so as to be circulated therein; anda control unit adapted to control operation of at least one of the fuel supply device or the circulation pump,wherein when freezing of water is presumed to be present downstream of the fuel supply device, the control unit relatively increases a proportion of an amount of the fuel gas to be supplied from the circulation pump to an amount of the fuel gas to be supplied from the fuel supply device.2. The fuel cell system according to claim 1 , further comprising a pressure sensor disposed downstream of the fuel supply device and upstream of a portion where the fuel gas supply channel and the circulation channel merge in the fuel gas supply channel claim 1 , wherein the control unit is adapted to presume that freezing of water is present downstream of the fuel supply device from a degree of an increase in a pressure obtained from the pressure sensor.3. The fuel cell system according to claim 1 , wherein when freezing of water is presumed to be ...

EQUATION BASED COOLING SYSTEM CONTROL STRATEGY/METHOD

A system for heating or cooling a fuel cell circuit of a vehicle includes a fuel cell stack, a temperature sensor to detect a fluid temperature of the fluid, a pump to pump the fluid through the fuel cell circuit, and an ECU. The ECU is designed to determine a temperature control signal based on the fluid temperature of the fluid. The ECU is also designed to calculate a desired mass flow rate of the fluid through the fuel cell stack based on the temperature control signal. The ECU is also designed to calculate a desired pump speed of the pump based on the desired mass flow rate of the fluid through the fuel cell stack. The ECU is also designed to control the pump to pump the fluid at the desired pump speed to increase or decrease the fluid temperature of the fluid. 1. A system for heating or cooling a fuel cell circuit of a vehicle comprising:a fuel cell stack having a plurality of fuel cells and configured to receive a fluid and to heat the fluid;a temperature sensor configured to detect a fluid temperature of the fluid;a pump configured to pump the fluid through the fuel cell circuit; and determine a temperature control signal based on the fluid temperature of the fluid,', 'calculate a desired mass flow rate of the fluid through the fuel cell stack based on the temperature control signal,', 'calculate a desired pump speed of the pump based on the desired mass flow rate of the fluid through the fuel cell stack, and', 'control the pump to pump the fluid at the desired pump speed to increase or decrease the fluid temperature of the fluid., 'an electronic control unit (ECU) coupled to the temperature sensor and the pump and configured to2. The system of further comprising an intercooler oriented in parallel with the fuel cell stack and configured to transfer thermal energy from an airflow to the fluid claim 1 , wherein the ECU is further configured to calculate a total desired mass flow rate of the fluid through the fuel cell stack and through the intercooler claim 1 ...

Equation based state estimator for cooling system controller

A system includes a fuel cell stack that receives a fluid, an actuator to increase or decrease a fluid temperature of the fluid, a pipe to facilitate flow of the fluid, and a memory designed to store a model of the fuel cell circuit. The system also includes an ECU that calculates mass flow values of the fluid through the fuel cell stack or the pipe based on a previously-determined mass flow value and the model of the fuel cell circuit. The ECU also calculates a plurality of pressure values corresponding to the fuel cell stack or the pipe based on the plurality of mass flow values and the model, controls the actuator position of the actuator to increase or decrease the fluid temperature based on at least one of the plurality of mass flow values and at least one of the plurality of pressure values.

Fuel Cell Flow Field Design For Thermal Management

Fuel cell assemblies comprising at least one thermally compensated coolant channel are provided. The thermally compensated coolant channel has a cross-sectional area that decreases in the coolant flow direction along at least a portion of the channel length. In some embodiments, such thermally compensated coolant channels can be used to provide substantially uniform heat flux, and substantially isothermal conditions, in fuel cells operating with substantially uniform current density.

HEAT EXCHANGE DEVICE FOR COOLING WATER OF FUEL CELL AND FUEL CELL SYSTEM COMPRISING THE SAME

Disclosed is a heat exchange apparatus for cooling water of a fuel cell, the heat exchange apparatus including a body, through which a cooling water pipe, through which cooling water that is to be supplied to a fuel cell stack flows, passes, and a heat accumulator provided in the interior of the body and filled with a PCM heat accumulation material that is to exchange heat with the cooling water. The body includes a medium space provided between the cooling water pipe and the heat accumulator and filled with a medium material. The PCM heat accumulation material exchanges heat with the cooling water by the medium material. 1. A heat exchange apparatus for cooling water of a fuel cell , the heat exchange apparatus comprising:a body, through which a cooling water pipe, through which cooling water that is to be supplied to a fuel cell stack flows, passes; anda heat accumulator provided in an interior of the body and filled with a PCM heat accumulation material that is to exchange heat with the cooling water,wherein the body includes a medium space provided between the cooling water pipe and the heat accumulator and filled with a medium material, andwherein the PCM heat accumulation material exchanges heat with the cooling water by the medium material.2. The heat exchange apparatus of claim 1 , wherein a material claim 1 , a phase of which is changed at an operation temperature that is lower than a reference temperature due to the medium material filling the medium space claim 1 , is employed as the PCM heat accumulation material claim 1 , andwherein the reference temperature is a phase change temperature that is required by the PCM heat accumulation material when a medium material is not provided between the heat accumulator and the cooling water pipe as the heat accumulator is located to contact the cooling water pipe.3. The heat exchange apparatus of claim 2 , wherein the medium material is selected based on a heat transfer rate between the heat accumulator and the ...

Fuel cell system and fuel cell system control method

A fuel cell system that includes a fuel cell body that is formed by a membrane electrode assembly including an anode catalyst and a cathode catalyst between which an electrolyte membrane is sandwiched and a pair of separators forming an anode-catalyst-side flow channel and a cathode-catalyst-side flow channel, a fuel supply system configured to supply fuel gas to the fuel cell body, an oxidant supply system configured to supply oxidant gas to the fuel cell body, a control device that controls these supply systems in accordance with an operating state of the fuel cell system and a catalyst deterioration recovery device that recovers deterioration of the anode catalyst. The catalyst deterioration recovery device includes a plurality of catalyst deterioration recovery means, a specific operating state detecting means configured to detect a specific operating state of the fuel cell system and a selecting means configured to selectively activate the plurality of catalyst deterioration recovery means in accordance with the specific operating state.

A fuel cell system and a method and apparatus for starting a fuel cell stack

The invention concerns fuel cell systems and methods for converting chemical energy of a fuel containing hydrogen into electricity. According to the invention, a fuel cell stack is provided having at least one anode and one cathode separated by a proton-exchange membrane. A fuel transport circuit feeds fuel to the fuel cell stack, and a temperature control system is adapted to control the temperature of the fuel cell stack by circulating a coolant medium through said fuel cell stack. The temperature control system includes a pump for circulating the coolant medium, a heater unit connected to a coolant transport circuit for heating the coolant with a PTC heater, a heat radiation unit connected to the coolant transport circuit for removing excess heat, and a temperature sensor. In response to a startup condition of the fuel cell stack, a controller is adapted to read a temperature signal indicative of the fuel cell stack temperature, to bypass the heat radiation unit, if the fuel cell stack temperature is below a first predetermined value, and to connect electric power generated by said fuel cell stack to be started-up to said PTC heater. 3. An apparatus comprising a fuel cell stack for converting chemical energy of a fuel containing hydrogen into electricity , at least one processing core , at least one memory including computer program code , the at least one memory and the computer program code being configured to , with the at least one processing core , cause the apparatus in response to a startup condition of said fuel cell stack at least to:read from at least one temperature sensor temperature signals indicative of the temperature of said fuel cell stack; and connect electric power generated by said fuel cell stack to a power output for external consumption at T2,', 'disconnect said PTC heater from said electric power at T3, and', 'connect said heat radiation unit to said coolant transport circuit by operating at least one valve that directs the coolant flow to ...

FUEL CELL COOLING SYSTEM

A fuel cell cooling system includes a flow-volume ratio regulating valve adjusting a flow-volume ratio of a heat-dissipation flow volume of a coolant flowing into a fuel cell through a radiator and a bypass flow volume of the coolant flowing into the fuel cell by bypassing the radiator, a temperature sensor sensing a temperature of the coolant flowing out of the fuel cell, an inflow temperature control unit controlling an operation of the flow-volume ratio regulating valve and adjusting the temperature of the refrigerant flowing into the fuel cell such that a sensed temperature sensed by the temperature sensor approaches a target temperature, and an abnormality determining unit determining whether a circulation flow volume of the refrigerant is in an abnormal state, based on the sensed temperature sensed in an adjusting time period where the flow-volume ratio is adjusted without controlling the bypass flow volume to be zero. 1. A fuel cell cooling system circulating a refrigerant in a fuel cell and a radiator and cooling down the fuel cell by controlling the radiator to dissipate a heat transmitted from the fuel cell to the refrigerant , the fuel cell cooling system comprising:a flow-volume ratio regulating valve configured to adjust a flow-volume ratio of a heat-dissipation flow volume that is a flow volume of the refrigerant flowing into the fuel cell through the radiator and a bypass flow volume that is a flow volume of the refrigerant flowing into the fuel cell by bypassing the radiator;a temperature sensor configured to sense a temperature of the refrigerant flowing out of the fuel cell;an inflow temperature control unit configured to control an operation of the flow-volume ratio regulating valve and adjust the temperature of the refrigerant flowing into the fuel cell such that a sensed temperature that is the temperature sensed by the temperature sensor approaches a target temperature; andan abnormality determining unit configured to determine whether a ...

METHODS AND SYSEMS FOR CONTROLLING WATER IMBALANCE IN AN ELECTROCHEMICAL CELL

A system and method of controlling water imbalance in an electrochemical cell is provided. The method includes determining a present water imbalance in the electrochemical cell by summing a waterand a waterless a water. Waterrepresents an amount of water introduced into the electrochemical cell by an oxidant feed gas; waterrepresents an amount of water created by the electrochemical cell from the electrochemical reaction; and waterrepresents an amount of water discharged from the electrochemical cell by an oxidant exhaust gas. The method includes tracking a cumulative water imbalance during operation of the electrochemical cell by repeatedly determining the present water imbalance and continuing to sum the results during operation. And, the method also includes adjusting a flow rate of the oxidant feed gas entering the electrochemical cell based on the cumulative water imbalance. 125-. (canceled)26. An electrochemical cell system , comprising:an electrochemical cell;a plurality of oxidant gas inlet sensors, an oxidant gas exhaust sensor, a coolant inlet sensor, a coolant exhaust sensor, and current transducer; [{'sub': m', 'created', 'out, 'claim-text': [{'sub': 'in', 'wateris an amount of water introduced into the electrochemical cell by an oxidant feed gas;'}, {'sub': 'created', 'wateris an amount of water created by the electrochemical cell from the electrochemical reaction; and'}, {'sub': 'out', 'wateris an amount of water discharged from the electrochemical cell by an oxidant exhaust gas;'}], 'determine a present water imbalance in the electrochemical cell by summing a waterand a waterless a water, wherein, 'track a cumulative water imbalance during operation of the electrochemical cell by repeatedly determining the present water imbalance and continuing to sum the results during operation;', 'adjust a flow rate of the oxidant feed gas entering the electrochemical cell based on the cumulative water imbalance; and, 'a controller configured toa coolant pump ...

COOLING CONTROL SYSTEM AND METHOD OF FUEL CELL

A cooling control method of a fuel cell is provided. The method includes estimating a temperature of a separator based on heat exchange between the separator formed between unit cells of a fuel cell stack and coolant flowing through a cooling line between the separators. A ratio of coolant passing through a heat exchange device to coolant bypassing the heat exchange device is adjusted based on the estimated temperature of the separator. Additionally, a rotation speed of a pump for circulating coolant for cooling the fuel cell stack is adjusted based on the estimated temperature of the separator. 1. A cooling control system of a fuel cell , comprising:a fuel cell stack having a separator formed between unit cells;a cooling line, through which coolant for cooling the fuel cell stack flows;a heat exchange device disposed on the cooling line to cool the coolant in the cooling line through heat exchange with the outside;a bypass line configured to branch off from the cooling line at a point before passing through the heat exchange device and to join the cooling line at a point after passing through the heat exchange device to bypass the heat exchange device;a temperature control device disposed at the point where the bypass line branches off from or joins the cooling line to adjust a ratio of coolant received from the cooling line to coolant received from the bypass line;a temperature estimator configured to estimate a temperature of the separator based on heat exchange between the separator and the coolant flowing through the cooling line between the separators; andan opening degree controller configured to operate the temperature control device based on the temperature of the separator estimated by the temperature estimator.2. The cooling control system according to claim 1 , wherein the temperature control device is an electronic thermostat claim 1 , and wherein the opening degree controller is configured to adjust an opening degree of the temperature control device ...

CATALYST DETERIORATION RECOVERY DEVICE AND CATALYST DETERIORATION RECOVERY METHOD

A catalyst deterioration recovery device in a fuel cell system that includes a fuel cell including a membrane electrode assembly configured to include an electrolyte membrane and anode and cathode catalysts between which the electrolyte membrane is sandwiched from both sides and anode and cathode separators respectively including an anode gas flow channel and a cathode gas flow channel, the membrane electrode assembly being sandwiched between the anode and cathode separators. The catalyst deterioration recovery device recovers performance decreased by adsorption of carbon monoxide to the anode catalyst. The catalyst deterioration recovery device includes a recovery control unit configured to supply at least a part of oxygen to be supplied to the cathode gas flow channel to the anode catalyst via the electrolyte membrane. 116.-. (canceled)17. A catalyst deterioration recovery device in a fuel cell system that includes a fuel cell including: a membrane electrode assembly configured to include an electrolyte membrane and anode and cathode catalysts between which the electrolyte membrane is sandwiched from both sides; and anode and cathode separators respectively including an anode gas flow channel and a cathode gas flow channel , the membrane electrode assembly being sandwiched between the anode and cathode separators , the catalyst deterioration recovery device recovering performance decreased by adsorption of carbon monoxide to the anode catalyst ,the catalyst deterioration recovery device comprising a recovery control unit configured to supply at least a part of oxygen to be supplied to the cathode gas flow channel to the anode catalyst via the electrolyte membrane, whereinthe recovery control unit controls an amount of oxygen permeating the electrolyte membrane so as to recover the performance of the anode catalyst.18. The catalyst deterioration recovery device according to claim 17 , whereinthe fuel cell system further includes an oxygen-containing gas adjusting ...

Fuel cell, control method and computer readable recording medium

To provide: a fuel cell, with which the level of contamination of a cooling passage becomes lower, lowering of the power generation efficiency of the power generation unit due to rise in the conductivity of the heat medium is suppressed, it is possible to control the heat radiation amount, and it is possible to use a common fan as a fan for ventilation and a fan for a radiator; a control method of controlling heat exchange in a fuel cell; and a computer readable recording medium storing a computer program for causing a computer to execute control processing of heat exchange. The fuel cell is provided with: a stack cooling passage configured to cool a stack, which generates electricity by reacting hydrogen and oxygen, by circulation of a first heat medium; a radiator flow passage, which allows a second heat medium to flow through a radiator and circulate; a cooling pump provided at the stack cooling passage; a heat radiation pump provided at the radiator flow passage; and a heat exchanger configured to perform heat exchange between the first heat medium and the second heat medium.

Coolant Storage Tank

A coolant storage tank () for storing coolant in a fuel cell system (), the coolant storage tank comprising a plurality of individually controllable heater elements (). A coolant storage tank comprising a first heater element () located at a base of the coolant storage tank and a second heater element () is also disclosed. A coolant storage tank comprising a first coolant storage compartment () in fluid communication with a second coolant storage compartment (), the first coolant storage compartment including at least a first heater element () and wherein the second coolant storage compartment is unheated is also disclosed. A method of melting frozen coolant in a coolant storage tank is also disclosed. 1. A coolant storage tank for storing coolant in a fuel cell system , the coolant storage tank comprising a plurality of individually controllable heater elements.2. The coolant storage tank of claim 1 , in which the coolant tank is associated with a controller claim 1 , the controller configured to sequentially activate the individually controllable heater elements.3. The coolant storage tank of claim 1 , in which at least one of the plurality of individually controllable heater elements comprises;a heater element located at a base of the coolant storage tank;a heater element extending upwardly from a base of the coolant storage tank;a heater element extending downwardly from an upper surface of the tank;a heater element located along a side of the tank; anda heater element extending from a side of the tank.4. The coolant storage tank of claim 1 , in which the coolant storage tank includes two or more heater elements that are spaced in a vertical direction5. (canceled)6. The coolant storage tank of in which the coolant storage tank comprises a first coolant storage compartment and a second coolant storage compartment claim 1 , the second coolant storage compartment in fluid communication with the first coolant storage compartment claim 1 , wherein the first coolant ...

Method for Start Preparation

A method for preparing a fuel cell system in a vehicle for starting, for which purpose a starting preparation routine is carried out after the vehicle has been shut down depending on a temperature limit value. In the method, in the event that the fuel cell had not reached its normal operating temperature during the previous operation and a temperature falls below the predetermined temperature limit value, the fuel cell system is operated until it has reached its normal operating temperature and after which the starting preparation routine is subsequently carried out. 15.-. (canceled)6. A method for preparing a fuel cell system in a vehicle for starting , comprising the steps of:when the fuel cell system did not reach a normal operating temperature of the fuel cell system during a previous operation and a current temperature falls below a predetermined temperature limit value, operating the fuel cell system until the fuel cell system reaches the normal operating temperature and subsequently performing a starting preparation routine.7. The method according to claim 6 , wherein the starting preparation routine is performed only after the fuel cell system has cooled down to the predetermined temperature limit value after reaching the normal operating temperature.8. The method according to claim 6 , wherein the normal operating temperature is 60° C. to 70° C.9. The method according to claim 6 , wherein the predetermined temperature limit value is 0° C. to 10° C.10. The method according to claim 6 , wherein the current temperature is measured in an interior of the fuel cell system.11. The method according to claim 10 , wherein the current temperature is measured in a region of a fuel cell of the fuel cell system and/or in a region of a coolant for the fuel cell. The invention relates to a method for preparing a fuel cell system in a vehicle for starting, according to the type defined in more detail herein.Fuel cell systems are known from the general prior art. They can be ...

Fuel Cell Freeze Protection Device and System

A fuel cell system including a fuel cell stack, a coolant loop and a thermal battery. The coolant loop is configured to flow a coolant liquid therethrough. The thermal battery includes a phase change material configured to absorb heat generated by the fuel cell stack or coolant liquid and to latently store the heat during a first mode of operation the fuel cell system. 1. A fuel cell system comprising:a fuel cell stack;a coolant loop configured to flow a coolant liquid therethrough; anda thermal battery including a phase change material configured to absorb heat generated by the fuel cell stack or coolant liquid and to latently store the heat during a first mode of operation of the fuel cell system.2. The fuel cell system of claim 1 , wherein the phase change material is further configured to at least partially change phase from solid to liquid during the first mode of operation.3. The fuel cell system of claim 1 , wherein the phase change material is further configured to release latent heat into the fuel cell stack or coolant loop during a second mode of operation of the fuel cell system.4. The fuel cell system of claim 3 , wherein the phase change material is further configured to at least partially change phase from liquid to solid during the second mode of operation of the fuel cell system.5. The fuel cell system of claim 1 , wherein the first mode of operation is a normal operating mode of the fuel cell system.6. The fuel cell system of claim 3 , wherein the second mode of operation is a startup of the fuel cell system at low temperature ambient conditions of 0° C. or lower.7. The fuel cell system of claim 5 , wherein the fuel cell stack or coolant liquid is configured to release heat to the thermal battery during the first mode of operation.8. The fuel cell system of claim 6 , wherein the fuel cell stack or coolant liquid is configured to absorb heat from the thermal battery during the second mode of operation.9. (canceled)10. The fuel cell system of claim 1 ...

Fuel cell cooling system and control method of the same

A fuel cell cooling system and a control method are provided. The fuel cell cooling system includes a fuel cell module having a fuel cell stack and a first cooling water line through which primary cooling water undergoing heat exchange with the fuel cell stack to adjust a temperature of the fuel cell stack circulates. A cooling module includes a second cooling water line through which secondary cooling water circulates and a cooling tower is configured to adjust a temperature of the secondary cooling water. A heat exchanger is connected between the first cooling water line of the fuel cell module and the second cooling water line of the cooling module for heat exchange. A controller configured to operate the fuel cell module and the cooling module.

FUEL CELL SYSTEM AND REFRIGERANT FLOW RATE ESTIMATION METHOD FOR THE SAME

To provide a fuel cell system including: a fuel cell group including a plurality of fuel cells; a refrigerant distribution passage through which a refrigerant is individually distributed to the fuel cells composing the fuel cell group; a pre-distribution refrigerant flow rate acquiring unit configured to acquire a first outlet temperature flow rate that is a flow rate of the refrigerant before distribution; a first outlet temperature detecting unit that is provided at a refrigerant outlet of at least one first fuel cell in the fuel cell group in the refrigerant distribution passage, and is configured to detect a first outlet temperature that is a refrigerant outlet temperature of the first fuel cell; a voltage acquiring unit configured to acquire at least a first voltage that is a voltage of the first fuel cell; a current acquiring unit configured to acquire at least a first current that is a current of the first fuel cell; and a controller that calculates a first individual supply flow rate of the first fuel cell on the basis of the first voltage, the first current, and the first outlet temperature, and calculates a second individual supply flow rate of at least one second fuel cell other than the first fuel cell on the basis of the first individual supply flow rate and the pre-distribution refrigerant flow rate. 1. A fuel cell system comprising:a fuel cell group including a plurality of fuel cells;a refrigerant distribution passage through which a refrigerant is individually distributed to the fuel cells composing the fuel cell group;a pre-distribution refrigerant flow rate acquiring unit configured to acquire a pre-distribution refrigerant flow rate that is a flow rate of the refrigerant before distribution;a first outlet temperature detecting unit that is provided at a refrigerant outlet of at least one first fuel cell in the fuel cell group in the refrigerant distribution passage, and is configured to detect a first outlet temperature that is a refrigerant ...

FUEL CELL SYSTEM

A fuel cell system of the present invention includes: a fuel cell supplied with fuel gas and oxidizing gas to generate electricity; a fuel gas supply unit supplying the fuel gas to the fuel cell; an oxidizing gas supply unit supplying the oxidizing gas to the fuel cell; an aftercooler cooling the oxidizing gas supplied to the fuel cell by heat exchange with a coolant; an oxidizing gas temperature detector detecting temperature of the oxidizing gas; and a coolant circulation controller starting circulation of the coolant when the detected temperature of the oxidizing gas exceeds a predetermined value. The predetermined value is set to a value of not higher than a minimum electricity generation temperature of the fuel cell, and a circulation timing and flow rate of the coolant for the aftercooler are controlled such that the supplied oxidizing gas does not become cold. This enables the fuel cell to generate electricity at cold start-up. 1. A fuel cell system , comprising:a fuel cell configured to be supplied with fuel gas and oxidizing gas to generate electricity, the fuel cell comprising an electrolyte membrane configured to contain water formed by reacting the fuel gas with the oxidizing gas;a fuel gas supply unit configured to supply the fuel gas to the fuel cell;an oxidizing gas supply unit configured to supply the oxidizing gas to the fuel cell;a component temperature detector configured to detect a temperature of a cooling system component disposed on a flow path through which a coolant circulates and reduces a temperature of the oxidizing gas and,wherein a coolant circulation controller is configured to start circulation of the coolant when the component temperature exceeds a predetermined temperature not higher than an upper temperature limit of the cooling system component.2. A fuel cell system claim 1 , according to claim 1 , further comprising:an oxidizing gas temperature detector configured to detect a temperature of the oxidizing gas to be supplied to the ...

POWER GENERATION STOPPING METHOD FOR FUEL CELL SYSTEM AND FUEL CELL SYSTEM

A power generation stopping method for a fuel cell system including a fuel cell, includes continuing generating electric power by the fuel cell via electrochemical reaction between fuel gas and oxidant gas during a post running period after the fuel cell system is ordered to stop. A coolant is supplied at a first flow rate to the fuel cell during the post running period until temperature of the fuel cell reaches a threshold temperature. A coolant is supplied to the fuel cell at a second flow rate larger than the first flow rate during the post running period after the temperature of the fuel cell has reached the threshold temperature. 1. A power generation stopping method for a fuel cell system including a fuel cell , comprising:continuing generating electric power by the fuel cell via electrochemical reaction between fuel gas and oxidant gas during a post running period after the fuel cell system is ordered to stop;supplying a coolant at a first flow rate to the fuel cell during the post running period until temperature of the fuel cell reaches a threshold temperature; andsupplying a coolant to the fuel cell at a second flow rate larger than the first flow rate during the post running period after the temperature of the fuel cell has reached the threshold temperature.2. The power generation stopping method according to claim 1 , wherein a coolant supply device causes the coolant discharged from a coolant outlet of the fuel cell to flow through equipment that constitutes an oxidant gas supply device and that is freezable.3. A fuel cell system comprising:a fuel cell to generate electric power via electrochemical reaction between fuel gas and oxidant gas;a fuel gas supplier to supply the fuel gas into the fuel cell;an oxidant gas supplier to supply the oxidant gas into the fuel cell;a coolant supplier to supply a coolant into the fuel cell; and control the fuel cell to continue generating the electric power during a post running period after the fuel cell system is ...

Coolant Storage Tank

A coolant storage tank () for storing coolant in a fuel cell system (), the coolant storage tank comprising a plurality of individually controllable heater elements (). A coolant storage tank comprising a first heater element () located at a base of the coolant storage tank and a second heater element () is also disclosed. A coolant storage tank comprising a first coolant storage compartment () in fluid communication with a second coolant storage compartment (), the first coolant storage compartment including at least a first heater element () and wherein the second coolant storage compartment is unheated is also disclosed. A method of melting frozen coolant in a coolant storage tank is also disclosed. 1. A method of heating coolant in a coolant storage tank in a fuel cell system , the method comprising sequentially activating via a controller at least two individually controllable heater elements;wherein the controller configured to;activate a first heater element of the plurality of individually controllable heater elements for a first period at a first power level, provide coolant heated by said first heater element, and activate at least one other of the plurality of heater elements for a second period at a second power level;wherein the energy output per unit volume occupied by the first heater element is higher than the energy output per unit volume occupied by the second heater element; and,wherein coolant is supplied to a fuel cell.2. The method of heating coolant in a coolant storage tank in a fuel cell system of claim 1 , in which at least one of the at least two individually controllable heater elements comprises:a heater element located at a base of the coolant storage tank;a heater element extending upwardly from a base of the coolant storage tank;a heater element extending downwardly from an upper surface of the tank;a heater element located along a side of the tank; ora heater element extending from a side of the tank.3. The method of heating coolant ...

SYSTEM AND METHOD FOR CONTROLLING COOLANT TEMPERATURE FOR FUEL CELL

A coolant temperature control system for a fuel cell stack in a vehicle includes a controller for determining a real time target exit temperature of a fuel cell stack coolant and a communicating device for detecting a fuel cell voltage and a fuel cell current outputted from the fuel cell stack. The real time target exit temperature of the fuel cell stack coolant is determined by an input fuel cell heat to fuel cell power ratio generated from the fuel cell stack for compensating the target exit temperature due to degradation of the fuel cell stack over time. In addition, the coolant temperature control system determines to activate for evaluating the real time target exit temperature of the fuel cell stack coolant when a trip distance of the vehicle is greater than a predetermined travel distance. 1. A coolant temperature control system for a fuel cell (FC) stack in a vehicle , the coolant temperature control system comprising:a controller operable to determine a real time target exit temperature of a FC coolant, the controller configured for compensating the target exit temperature due to degradation of the FC stack over time, the controller determining an input FC Heat to FC Power ratio generated from the FC stack; anda communicating device operable to detect a FC voltage and a FC current outputted from the FC stack;wherein the controller determines constant FC Heat to FC Power ratios and target FC coolant exit temperatures at a beginning and an end of life of the FC stack for mapping the real time target FC coolant exit temperature.2. The coolant temperature control system of claim 1 , wherein the controller determines to activate the temperature control system for evaluating the real time target exit temperature of the FC coolant when a trip distance of the vehicle is greater than a predetermined travel distance.3. The coolant temperature control system of claim 2 , wherein the controller sets 30 km as the predetermined travel distance for activating to evaluate ...

APPARATUS AND METHOD FOR CONTROLLING COOLING OF FUEL CELL-BASED GENERATOR SYSTEM

An apparatus for controlling cooling of a fuel cell-based generator system is provided. The apparatus includes a first valve disposed between an individual cooling-water line of a first fuel cell system and a common cooling-water line and a first valve driver that opens and closes the first valve. A second valve is disposed between an individual cooling-water line of a second fuel cell system and the common cooling-water line and a second valve driver opens and closes the second valve. A controller determines whether a cooling-water temperature of the first fuel cell system exceeds a reference value, and opens the first valve and the second valve so that cooling-water for the second fuel cell system flows into the first fuel cell system, when the cooling-water temperature of the first fuel cell system exceeds the reference value. 1. An apparatus for controlling cooling of a fuel cell-based generator system , comprising:a first valve disposed between an individual cooling-water line of a first fuel cell system and a common cooling-water line;a first valve driver configured to open and close the first valve;a second valve disposed between an individual cooling-water line of a second fuel cell system and the common cooling-water line;a second valve driver configured to open and close the second valve; and determine whether a cooling-water temperature of the first fuel cell system exceeds a reference value; and', 'open the first valve and the second valve to allow cooling-water for the second fuel cell system to flow into the first fuel cell system, in response to determining that the cooling-water temperature of the first fuel cell system exceeds the reference value., 'a controller configured to2. The apparatus of claim 1 , wherein the controller is configured to normally maintain the first valve and the second valve in a closed state.3. The apparatus of claim 1 , wherein in response to determining that the cooling-water temperature of the first fuel cell system ...

METHOD FOR OPERATING A FUEL CELL AND CONTROLLER THEREFORE

A method for operating a fuel cell system comprising a fuel cell assembly of a plurality of fuel cells configured to generate electrical power from a fuel flow and an oxidant flow to the plurality of fuel cells, the fuel cell assembly arranged in combination with a coolant storage module configured to supply the fuel cell assembly with a flow of coolant, the method performed when the temperature of the coolant in the coolant storage module is below a coolant temperature threshold and comprises; a first phase performed prior to activation of a coolant pump configured to deliver coolant from the coolant storage module to the fuel cell assembly and a second phase performed after activation of the coolant pump. 1. A method for operating a fuel cell system configured to generate electrical power from a fuel flow and an oxidant flow to a plurality of fuel cells in an assembly arranged in combination with a coolant storage module configured to supply the fuel cell assembly with a flow of coolant , the method comprising;activating one or more heaters configured to heat frozen coolant of the coolant storage module;providing a compressor configured to provide the flow of oxidant and/or the flow of fuel, based on a low performance threshold comprising a voltage across the fuel cells of the fuel cell assembly being below a first predetermined assembly voltage threshold and/or a voltage of one or more of the fuel cells being below a first cell voltage threshold;performing a first recovery routine comprising deactivating one or more of the activated heaters; andprovided that, within a first predetermined time, a recovery threshold is met comprising a voltage across the fuel cells of the fuel cell assembly is above a second predetermined assembly voltage threshold and/or a voltage of one or more of the fuel cells is above a second cell voltage threshold, perform a heater activation procedure that includes activating one or more of the heaters; otherwiseperforming a further ...

APPARATUS AND METHOD FOR CONTROLLING COOLANT TEMPERATURE OF FUEL CELL SYSTEM

Disclosed is an apparatus and method that controls a coolant temperature of a fuel cell system, which can improve fuel efficiency by performing a multi-point temperature control based on the power of a vehicle, the outdoor temperature for each season, etc. 13.-. (canceled)4. A method for controlling a coolant temperature of a fuel cell system , the method comprising:measuring, by a sensor, the coolant temperature at an inlet of a fuel cell stack;variably controlling, by a fuel cell controller, a target stack inlet coolant temperature based on a control factor;comparing, by the fuel cell controller, a measured value of the stack inlet coolant temperature and a predetermined value of the target stack inlet coolant temperature; andcontrolling by the fuel cell controller, when the measured value of the stack inlet coolant temperature is greater than the predetermined value of the target stack inlet coolant temperature, an opening degree of a 3-way proportional valve to follow a target coolant temperature via sending a control signal to a controller,wherein an operation temperature of the fuel cell system is controlled through a multi-point temperature control based on power of a vehicle and an outdoor temperature (i.e., heat dissipation performance) for each season to improve fuel efficiency.5. The method of claim 4 , wherein the target coolant temperature varies depending on the outdoor temperature.6. The method of claim 4 , wherein the target coolant temperature varies depending on a stack heat generation rate claim 4 , a stack outlet coolant temperature claim 4 , and a duration of the stack heat generation rate and the stack outlet coolant temperature.7. The method of claim 4 , further comprising:measuring a stack heat generation rate, a stack outlet coolant temperature, and a duration of the stack heat generation rate and the stack outlet coolant temperature; andreceiving, at a fuel cell controller, the stack heat generation rate, the stack outlet coolant ...

FUEL CELL SYSTEM AND CONTROL METHOD THEREOF

A fuel cell system comprises a fuel cell stack, radiator, stack side cooling water passage, radiator side cooling water passage, bypass cooling water passage, deionizer, stack side cooling water pump, and radiator side cooling water pump. The pump are formed from rotary pumps able to change directions and amounts of cooling water discharged by changes of drive speeds. Drive speeds of the pumps are controlled to thereby control an amount of cooling water flowing through the radiator side cooling water passage, an amount of the cooling water flowing through the stack side cooling water passage, and a direction and amount of the cooling water flowing through the bypass cooling water passage. 1. A fuel cell system comprising:a fuel cell stack configured to generate electric power by an electrochemical reaction between fuel gas and an oxidizing gas;a radiator configured to lower a temperature of a cooling water for the fuel cell stack;a cooling water feed passage connecting an outlet of an in-radiator cooling water passage in the radiator and an inlet of an in-stack cooling water passage in the fuel cell stack with each other, and a cooling water discharge passage connecting an outlet of the in-stack cooling water passage and an inlet of the in-radiator cooling water passage with each other, the cooling water feed passage comprising a feed side branching point, a radiator outflow passage from the outlet of the in-radiator cooling water passage to the feed side branching point, and a stack inflow passage from the feed side branching point to the inlet of the in-stack cooling water passage, the cooling water discharge passage comprising a discharge side branching point, a stack outflow passage from the outlet of the in-stack cooling water passage to the discharge side branching point, and a radiator inflow passage from the discharge side branching point to the inlet of the in-radiator cooling water passage, the stack inflow passage, the in-stack cooling water passage, and ...

APPARATUS AND METHOD FOR CONTROLLING FUEL CELL STACK

An apparatus for controlling a fuel cell stack includes: a map storage storing a target relative humidity map in which a target relative humidity corresponding to a vapor pressure of the fuel cell stack and a coolant temperature of the fuel cell stack is recorded; a pressure sensor measuring an outlet pressure of the fuel cell stack; a current sensor measuring a current generated by the fuel cell stack; a water temperature sensor measuring a coolant temperature of the fuel cell stack; and a fuel cell controller configured to determine a state of the fuel cell stack using a relative humidity of the fuel cell stack based on the target relative humidity map, and to set an amount of airflow or a coolant temperature according to the state of the fuel cell stack. 1. An apparatus for controlling a fuel cell stack , the apparatus comprising:a map storage storing a target relative humidity map in which a target relative humidity corresponding to a vapor pressure of the fuel cell stack and a coolant temperature of the fuel cell stack is recorded;a pressure sensor measuring an outlet pressure of the fuel cell stack;a current sensor measuring a current generated by the fuel cell stack;a water temperature sensor measuring a coolant temperature of the fuel cell stack; anda fuel cell controller configured to determine a state of the fuel cell stack using a relative humidity of the fuel cell stack based on the target relative humidity map, and to set an amount of airflow or a coolant temperature according to the state of the fuel cell stack.2. The apparatus according to claim 1 , wherein the map storage includes a maximum relative humidity map and a minimum relative humidity map generated based on the target relative humidity map.3. The apparatus according to claim 2 , wherein the fuel cell controller reduces the amount of airflow to increase the relative humidity of the fuel cell stack when the relative humidity of the fuel cell stack is between the target relative humidity map ...

Coolant Storage Tank

A coolant storage tank ( 1 ) for storing coolant in a fuel cell system ( 2 ), the coolant storage tank comprising a plurality of individually controllable heater elements ( 7, 8 a, 8 b ). A coolant storage tank comprising a first heater element ( 7 ) located at a base of the coolant storage tank and a second heater element ( 8 a ) is also disclosed. A coolant storage tank comprising a first coolant storage compartment ( 50 ) in fluid communication with a second coolant storage compartment ( 51 ), the first coolant storage compartment including at least a first heater element ( 54 ) and wherein the second coolant storage compartment is unheated is also disclosed. A method of melting frozen coolant in a coolant storage tank is also disclosed.

APPARATUS FOR PROTECTING NEGATIVE PRESSURE

An apparatus for protecting negative pressure is provided. The apparatus includes a main flow passage that circulates coolant of a vehicle and includes a section where negative pressure is formed therein. A housing is positioned at the section where the negative pressure of the main flow passage is formed and has a communication aperture that communicates with the main flow passage therein. A negative pressure valve is disposed at the inside of the housing to open or close the communication aperture based on the relationship of an exterior pressure and a valve inside pressure to maintain the valve inside pressure above a predetermined reference value. 13-. (canceled)5. An apparatus for protecting negative pressure , comprising:a main flow passage configured to circulate coolant of a vehicle and having a section where negative pressure is formed therein;a housing positioned at the section where the negative pressure of the main flow passage is formed and having a communication aperture that communicates with the main flow passage therein; anda negative pressure valve disposed at the inside of the housing to open or close the communication aperture based on the relationship between an exterior pressure and a valve inside pressure to maintain the valve inside pressure above a predetermined reference valuewherein the negative pressure valve includes:a neck portion penetrably inserted into the communication aperture;a head portion formed at a lower end portion of the neck portion; andan elastic member spiral-wound along exterior circumference of the neck portion, to elastically open and close the communication aperture, andwherein the elastic member is coupled to the head portion via a coupling member, and the reference value of the valve inside pressure is tuned by adjusting a rotation amount of the coupling member to adjust an initial compression displacement amount of the elastic member.612-. (canceled)13. A cooling system of a vehicle , comprising:a radiator ...

Method for operating a fuel cell system for a motor vehicle

The invention relates to a method for operating a fuel cell system (10) using a first operating mode, in which, when all of the fuel cell stacks (22, 26) are inactive, one fuel cell stack (22) is pre-heated using a coolant that is pre-heated by means of an electric heater (42) while bypassing all cooler circuits (58) of the active coolant circuits (14) via bypass lines (64) and the one pre-heated fuel cell stack (22) is activated in order to pre-heat an additional fuel cell stack (26) of the fuel cell system. Other operating modes for operating a fuel cell system are disclosed in additional embodiments.

DEVICE INTENDED TO GENERATE ELECTRICITY FROM A PLANAR FUEL CELL COOLED BY AIR FLOW

A device intended to generate electricity includes a planar fuel cell having: cells each provided with an anode and a cathode associated with a membrane, and a first face and a second face opposite to the first face, the first face being arranged on the side with the anodes of the fuel cell and the second face being arranged on the side with the cathodes of the fuel cell. Furthermore, this device includes a system configured to generate a first air flow intended to cooperate thermally with the first face, and configured to generate a second air flow intended to cooperate with the second face to ensure the supply of oxidizer to the cathodes of the fuel cell. 1. A device intended to generate electricity , said device comprising: cells each provided with an anode and a cathode associated with a membrane,', 'a first face and a second face opposite to said first face, said first face being arranged on the side with the anodes of said fuel cell and said second face being arranged on the side with the cathodes of said fuel cell, and, 'a planar fuel cell comprisinga system configured to generate a first air flow intended to cooperate thermally with the first face, and configured to generate a second air flow intended to cooperate with the second face to ensure the supply of oxidizer to the cathodes of said fuel cell.2. The device according to claim 1 , wherein said membrane is common to all the cells of said fuel cell.3. The device according to claim 1 , wherein the first face of said fuel cell is bounded off at least in part by an outer wall of a fuel distribution chamber claim 1 , and wherein the second face of said fuel cell is bounded off at least in part by a perforated plate claim 1 , notably metallic.4. The device according to claim 1 , further comprising a control module configured to act on said system in order to control the first and second air flow in independent manner.5. The device according to claim 4 , wherein the control module is configured to receive at ...

COOLING SYSTEM AND METHOD FOR USE WITH A FUEL CELL

A cooling system is provided for use with a fuel cell. The cooling system comprises a first heat exchanger fluidly connected to an outlet passage of the fuel cell. The first heat exchanger can be configured to condense at least a portion of a fluid passing through the outlet passage of the fuel cell into liquid water. The cooling system can also comprise a second heat exchanger fluidly connected to an outlet passage of the first heat exchanger and an inlet passage of the fuel cell. The second heat exchanger can be configured to cool a fluid passing into the inlet passage of the fuel cell. In addition, the outlet passage of the fuel cell and the inlet passage of the fuel cell can be fluidly connected to a cathode of the fuel cell, and the inlet passage of the fuel cell can be configured to supply water to the cathode. 1. A method of cooling a fuel cell , comprising:supplying hydrogen to an anode of the fuel cell and supplying air and water to a cathode of the fuel cell;outputting a fluid from the fuel cell, wherein at least a portion of the fluid comprises a first fluid;supplying the first fluid to a first heat exchanger and condensing at least a portion of the first fluid into water using the first heat exchanger;supplying to a second heat exchanger the water condensed by the first heat exchanger;cooling the water condensed by the first heat exchanger while flowing through the second heat exchanger; andsupplying the cooled water to the fuel cell;wherein the cathode is connected to a cathode outlet passage having a first water separator configured to supply the first fluid to the heat exchanger.2. The method of claim 1 , further comprising separating water from hydrogen recirculated through the anode claim 1 , wherein the water is separated by a second water separator that supplies the water to the first water separator.3. The method of claim 2 , wherein water separated by the first water separator and the first water separator is supplied to a storage device.4. The ...

FUEL CELL SYSTEM

An object is to perform a purge at an appropriate timing. There is provided a fuel cell system mounted on a vehicle. The fuel cell system comprises a gas supplier that is configured to supply a purge gas into a fuel cell; and a controller that is configured to control the gas supplier and perform a purge with the purge as at a stop time of the vehicle. The controller obtains an ambient temperature in a driving state of the vehicle a plurality of times. In a case where an ambient temperature obtained last time among the ambient temperatures obtained in the driving state is lower than a predetermined reference value, the controller performs the purge with enhancing a purging capacity, compared with a case where the ambient temperature obtained last time is higher than the predetermined reference value. 1. A fuel cell system mounted on a vehicle , comprising:a fuel cell;an ambient temperature sensor configured to obtain a temperature outside of the vehicle as an ambient temperature;a gas supplier configured to supply a purge gas into the fuel cell; anda controller configured to control the gas supplier and perform a purge operation to purge the fuel cell with the purge gas, whereinthe controller obtains an ambient temperature in time series from the ambient temperature sensor in a driving state of the vehicle where the vehicle has a non-zero vehicle speed,the controller performs the purge operation after an off operation of a start switch of the vehicle, andin a case where an ambient temperature obtained last time among the ambient temperatures obtained in time series is lower than a predetermined reference value, the controller performs the purge operation after the off operation of the start switch with enhancing a purging capacity, compared with a case where the ambient temperature obtained last time is higher than the predetermined reference value.2. The fuel cell system according to claim 1 ,wherein the enhancing the purging capacity comprises increasing a purge ...

WARMING FEATURE FOR AIRCRAFT FUEL CELLS

A system and method for warming a fuel cell on an aircraft, the system includes at least one fuel cell. The fuel cell includes an anode and a cathode for creating thermal and electrical energy. A temperature sensor measures a first temperature of the fuel cell. A control unit is coupled to the temperature sensor. The control unit increases the first temperature to a second temperature in response to the first temperature being at least equal to a selected temperature threshold. Increasing of the first temperature is indicative of the control unit operating in a warming mode. The second temperature is higher than the selected temperature threshold. 1. A method of operating a fuel cell on an aircraft , the fuel cell operatively coupled to at least one sensor , comprising:sensing a temperature of the fuel cell with the at least one sensor; andoperating the fuel cell in a first mode if the sensed temperature is above a selected temperature threshold and operating the fuel cell in a second mode if the sensed temperature is less than or equal to the selected temperature threshold.2. The method according to claim 1 , wherein the selected temperature threshold is generally in the range of between about 4° C. and about −10° C.3. The method according to claim 2 , wherein the selected temperature threshold is generally about 0° C.4. The method according to claim 1 , wherein operating in the second mode comprises operating the fuel cell at a low load to increase the temperature of the fuel cell.5. The method according to claim 1 , wherein operating in the second mode further comprises regulating a temperature of an environment of the fuel cell.6. The method according to claim 1 , further comprising circulating a warm fluid through the environment of the fuel cell.7. The method according to claim 6 , wherein the warm fluid is generally in the range of between about −10° C. and about 95° C.8. The method of according to claim 6 , further comprising supplying the warm fluid from an ...

METHOD FOR DETECTING AND LESSENING FUEL STARVATION IN FUEL CELL SYSTEMS

Methods are disclosed for detecting and lessening fuel starvation conditions in an operating fuel cell system. The fuel cell systems comprise a solid polymer electrolyte fuel cell with a regulating apparatus for regulating the pressure of fuel supplied to the anode inlet of the fuel cell, in which the outlet pressure from the regulating apparatus oscillates during operation. The methods involve monitoring an electrical output of the fuel cell during operation, determining the amplitude of oscillation in the electrical output, and then, if the determined amplitude of oscillation in the electrical output exceeds a predetermined amount thereby indicating a fuel starvation condition, taking a remedial action to lessen the fuel starvation condition. 1. A method for detecting and lessening a fuel starvation condition in an operating fuel cell system , the fuel cell system comprising:a solid polymer electrolyte fuel cell,an oxidant supply subsystem, a fuel supply, and', 'a regulating apparatus for regulating the pressure of fuel supplied to an anode inlet of the fuel cell wherein the fuel supply is connected to an inlet of the regulating apparatus and the anode inlet of the fuel cell is connected to an outlet of the regulating apparatus, and wherein the outlet pressure from the regulating apparatus outlet oscillates when the fuel cell system is operating, and, 'a fuel supply subsystem comprisingan electrical output monitor for monitoring an electrical output of the fuel cell, the method comprising:monitoring the electrical output of the fuel cell while the fuel cell system is operating;determining the amplitude of oscillation in the electrical output of the fuel cell resulting from the oscillation in the regulating apparatus outlet pressure; andif the determined amplitude of oscillation in the electrical output exceeds a predetermined amount thereby indicating a fuel starvation condition, taking a remedial action to lessen the fuel starvation condition.2. The method of ...

Fuel cell system and control method therefor

Fuel cell control apparatus

Fuel-cell vehicle

연료 전지차는 연료 전지(2)와 이차 전지(3)를 구비한다. 순환 유로(12)는, 연료 전지(2)와 라디에이터(15)의 사이에서 냉매를 순환시킨다. 바이패스 유로(16)는 상기 이차 전지(3)를 통과한다. 바이패스 유로(16)는 일단이 순환 유로(12)의 라디에이터(15)의 상류측, 타단이 라디에이터(15)의 하류측에 접속되어 있다. 컨트롤러(30)는, 냉매 온도가 소정의 온도 문턱값 이상인 경우에 전환 밸브(14)를 조작하여 라디에이터측에 냉매가 흐르도록 하고, 상기 냉매 온도가 온도 문턱값 미만인 경우에는 상기 전환 밸브(14)를 조작하여 바이패스 유로측에 냉매가 흐르도록 한다. The fuel cell vehicle includes a fuel cell 2 and a secondary cell 3. The circulation passage 12 circulates the refrigerant between the fuel cell 2 and the radiator 15. The bypass flow path 16 passes through the secondary battery 3. One end of the bypass flow passage 16 is connected to the upstream side of the radiator 15 of the circulation flow passage 12 and the other end thereof to the downstream side of the radiator 15. The controller 30 operates the switching valve 14 when the coolant temperature is equal to or higher than a predetermined temperature threshold to allow the coolant to flow to the radiator side, and when the coolant temperature is lower than the temperature threshold, the switch valve 14. To operate the refrigerant to flow to the bypass flow path side.

System and method for controlling temperature of fuel cell stack

本发明涉及一种控制燃料电池堆的温度的系统和方法。该方法包括以下步骤：当执行泵正常模式时，如果冷却水出口温度等于或小于预设第一温度，则执行泵关闭模式，上述泵正常模式是将冷却水泵的旋转速度调整为等于或大于预设基准旋转速度并且基于上述冷却水出口温度改变每分钟转数(rpm)的模式，上述泵关闭模式是关闭冷却水泵或在操作上述冷却水泵的同时将上述冷却水泵的旋转速度减小至小于上述基准旋转速度的模式。另外，当执行上述泵关闭模式时，如果冷却水出口温度估计值超过预设第二温度，则执行上述泵正常模式。

Driving control apparatus of fuel cell system and method thereof

본 발명은 연료전지시스템의 운전 제어 장치 및 그 방법에 관한 것으로, 전류량에 상응하는 요구 공기유량과 공기유량센서를 이용하여 측정한 유입 공기유량에 기초하여 연료전지시스템의 상태(Wet/Dry)를 파악한 후, 공기 과급량 및 운전온도를 조절하여 연료전지시스템 내부의 수분량을 조절함으로써, 연료전지시스템이 건조한 상태가 되는 것을 방지할 수 있는 연료전지시스템의 운전 제어 장치 및 그 방법을 제공하고자 한다. 이를 위하여, 본 발명은 연료전지시스템의 운전 제어 장치에 있어서, 전류량에 상응하는 요구 공기유량을 저장하는 저장부; 연료전지 스택의 공기극으로 유입되는 공기유량(이하, 유입 공기유량)을 측정하는 공기유량 센서; 유입 공기유량을 조절하는 공기유량 조절부; 및 임계시간 동안 요구 공기유량과 유입 공기유량을 각각 누적하고, 누적 요구 공기유량 대비 누적 유입 공기유량의 비율이 임계치를 초과하면, 유입 공기유량을 기준치까지 낮추도록 상기 공기유량 조절부를 제어하는 제어부를 포함한다. The present invention relates to an apparatus and method for controlling operation of a fuel cell system, and more particularly, to a system and method for controlling operation of a fuel cell system in which a state (Wet / Dry) of a fuel cell system is determined based on a required air flow rate corresponding to a current amount and an inflow air flow rate measured using an air flow rate sensor And controlling the amount of water in the fuel cell system by controlling the air charge amount and the operating temperature after the fuel cell system is detected, thereby preventing the fuel cell system from becoming a dry state, and a method for controlling the operation of the fuel cell system. To this end, the present invention provides an operation control apparatus for a fuel cell system, comprising: a storage unit for storing a required air flow rate corresponding to an amount of current; An air flow rate sensor for measuring an air flow rate (hereinafter referred to as an inflow air flow rate) flowing into the air electrode of the fuel cell stack; An air flow rate regulating unit for regulating an inflow air flow rate; And a controller for controlling the air flow rate regulator to lower the inflow air flow rate to a reference value when the ratio of the required air flow rate to the cumulative demand air flow rate exceeds the threshold value, .

연료 전지 시스템

본 발명은 연료 전지 시스템으로서, 수소를 공급받아 상기 수소의 전기 화학적 반응으로 발전하여 제1 전력을 생성하고, 외부 부하가 연결되는 인버터와 연결되어 상기 제1 전력을 상기 인버터로 전달하는 연료 전지; 방전되어 상기 인버터로 제2 전력을 공급하거나, 상기 제1 전력을 이용하여 충전되는 배터리; 및 상기 연료 전지의 특성 정보 및 제어 조건을 입력받고, 상기 특성 정보와 상기 제어 조건을 이용하여 상기 제1 전력의 크기를 계산하며, 상기 수소의 공급량을 조절하여 상기 제1 전력의 크기를 조절하는 제어부를 포함한다.

Coolant heating device for fuel cell system

본 발명은 냉시동시 냉각수를 신속하게 가열하면서도 스택 전압에 따른 소비 출력을 조절할 수 있을 뿐만 아니라, 냉각수와 접촉하는 발열부를 외부와 분리시켜서 절연 저항 확보가 가능하도록 한 연료전지 시스템의 유도 가열장치에 관한 것이다. 즉, 본 발명은 냉각수 순환라인에 절연 가능한 하우징을 설치하고, 이 하우징내에 냉각수 가열을 위한 히터를 설치하는 동시에 하우징의 바깥쪽에는 히터에 대한 소비 출력을 조절할 수 있는 고주파 제어기 등을 설치함으로써, 냉시동시 냉각수를 신속하게 가열하면서도 스택 전압에 따른 소비 출력을 정밀하게 조절할 수 있을 뿐만 아니라, 냉각수와 접촉하는 발열부인 히터와 전원부인 고주파 제어기 등을 절연 재질의 하우징을 중심으로 분리시킴에 따라 절연 성능을 향상시킬 수 있도록 한 연료전지 시스템의 유도 가열장치를 제공하고자 한 것이다. The present invention relates to an induction heating apparatus of a fuel cell system that not only adjusts a power consumption according to a stack voltage while rapidly heating a cooling water during cold start, but also separates a heat generating part contacting the cooling water from the outside to ensure insulation resistance. will be. That is, the present invention provides a cold insulation by installing a housing that can be insulated in the cooling water circulation line, and installing a heater for heating the cooling water in the housing, and at the same time by installing a high frequency controller to adjust the consumption output of the heater on the outside of the housing. In addition to the rapid heating of the simultaneous coolant, the power consumption can be precisely controlled according to the stack voltage, and the insulation performance can be improved by separating the heater, the heating part in contact with the coolant, and the high frequency controller, the power part, from the housing made of insulating material. It is an object of the present invention to provide an induction heating apparatus for a fuel cell system that can be improved.

Process to control pressure in the anode of a fuel cell and fuel cell

The invention relates to a process to control pressure in the anode (4) of a fuel cell (1), whereby a pressure feeding unit (33) feeds hydrogen (2) to the anode and air or oxygen (3) to the cathode (5), and a mixture (28) made up of gas (32) and condensation (31) is removed periodically through an outlet exhaust using a pressure output unit (34) and is collected in a reservoir (30) and separated and the gas (32) is fed back to the anode (4). In order to feed the hydrogen (2) back with minimal power consumption, it is intended to open the pressure output unit (34) for the periodic removal of the mixture (28) and to send the mixture (28) over an outlet conduit (29) to the reservoir (30), whereby the pressure in the reservoir (30) matches the pressure of the hydrogen (2) being fed, after which the pressure output unit (34) is closed and the pressure feeding unit (33) and a pressure feedback control unit (37) are controlled in such a way that that the power consumption of the anode (4) changes the pressure in the reservoir (30) until a set point (41) of the pressure in the reservoir (30) and/or a set rapid value for the pressure in the anode (4) is achieved, whereupon the pressure feedback control unit (37) and the pressure feeding unit (33) are regulated in such a way that the pressure in the anode (4) is matched to a fixed set point (40).

Fuel cell system

Driving control apparatus of fuel cell system and method thereof

본 발명은 연료전지시스템의 운전 제어 장치 및 그 방법에 관한 것으로, 전류량에 상응하는 요구 공기유량과 공기유량센서를 이용하여 측정한 유입 공기유량에 기초하여 연료전지시스템의 상태(Wet/Dry)를 파악한 후, 공기 과급량 및 운전온도를 조절하여 연료전지시스템 내부의 수분량을 조절함으로써, 연료전지시스템이 건조한 상태가 되는 것을 방지할 수 있는 연료전지시스템의 운전 제어 장치 및 그 방법을 제공하고자 한다. 이를 위하여, 본 발명은 연료전지시스템의 운전 제어 장치에 있어서, 전류량에 상응하는 요구 공기유량을 저장하는 저장부; 연료전지 스택의 공기극으로 유입되는 공기유량(이하, 유입 공기유량)을 측정하는 공기유량 센서; 유입 공기유량을 조절하는 공기유량 조절부; 및 임계시간 동안 요구 공기유량과 유입 공기유량을 각각 누적하고, 누적 요구 공기유량 대비 누적 유입 공기유량의 비율이 임계치를 초과하면, 유입 공기유량을 기준치까지 낮추도록 상기 공기유량 조절부를 제어하는 제어부를 포함한다.

Temperature control valve of coolant for fuel cell vehicle

본 발명의 예시적인 실시예에 따른 연료 전지 차량용 냉각수 온도조절밸브는, 연료 전지 차량에서 연료전지 스택의 냉각 루프에 장착되며, 상기 연료전지 스택으로 공급되는 냉각수의 온도를 조절하기 위한 것으로서, ⅰ)라디에이터로부터 공급되는 냉각수가 유입되는 제1 유입포트와, 동일 반경을 따라 상기 제1 유입포트에 수직하며 연료전지 스택으로부터 공급되는 냉각수가 유입되는 제2 유입포트와, 상기 제1 및 제2 유입포트와 연결되며 상기 연료전지 스택으로 냉각수가 배출되는 배출포트를 포함하는 밸브 하우징과, ⅱ)상기 배출포트와 연결되며 상기 밸브 하우징의 내부에 회전 가능하게 장착되어 상기 제1 및 제2 유입포트의 열림량을 제어하는 작동 플런저와, ⅲ)상기 밸브 하우징의 상측에 구성되어 상기 작동 플런저를 회전시키는 엑츄에이터로서의 구동 모터를 포함하여 이루어진다. The fuel cell vehicle cooling water temperature control valve according to an exemplary embodiment of the present invention is mounted on a cooling loop of a fuel cell stack in a fuel cell vehicle and controls the temperature of the cooling water supplied to the fuel cell stack. A first inflow port into which coolant supplied from a radiator flows in; a second inflow port into which coolant supplied from a fuel cell stack flows perpendicular to the first inflow port along the same radius; and the first and second inflow ports And a valve housing including a discharge port for discharging coolant to the fuel cell stack, and ii) an opening of the first and second inlet ports connected to the discharge port and rotatably mounted in the valve housing. An actuating plunger for controlling the amount, and iii) an actuator configured to be rotated above the valve housing to rotate the actuating plunger. It comprises a motor as a drive.

Fuel cell system and operation method thereof

プロトンの伝導性及びエネルギーの変換効率を十分に確保しかつ起動停止型の運転形態に対応する、高分子電解質膜の劣化を効果的に抑制可能な、優れた耐久性を備える燃料電池システム及びその運転方法を提供するために、燃料電池システム（１００）が、燃料電池（１１）と、燃料ガス供給装置（１６）及び酸化剤ガス供給装置（１７）と、前記燃料電池の温度を制御する温度制御装置（１９）と、酸化剤ガスを加湿する加湿器（１８）とを備え、発電時には燃料ガスの露点を前記燃料電池の温度以上としかつ酸化剤ガスの露点を前記燃料電池の温度未満とし、前記燃料電池と負荷との電気的な接続を切断する前に該燃料電池の温度と酸化剤ガスの露点とを少なくとも一致させるよう制御するように構成された制御装置（２０）を更に備えている。 Fuel cell system with excellent durability capable of effectively suppressing deterioration of the polymer electrolyte membrane, sufficiently ensuring proton conductivity and energy conversion efficiency, and corresponding to the start-stop type operation mode, and its In order to provide an operation method, the fuel cell system (100) controls the temperature of the fuel cell (11), the fuel gas supply device (16), the oxidant gas supply device (17), and the temperature of the fuel cell. A control device (19) and a humidifier (18) for humidifying the oxidant gas are provided. During power generation, the dew point of the fuel gas is equal to or higher than the temperature of the fuel cell, and the dew point of the oxidant gas is lower than the temperature of the fuel cell. And a control device (20) configured to control the temperature of the fuel cell and the oxidant gas dew point to at least coincide with each other before disconnecting the electrical connection between the fuel cell and the load. To have.

Low-temperature quick start control method and system for fuel cell

本发明公开了一种燃料电池低温快速启动控制方法及系统，包括以下步骤：对燃料电池堆设置用于流通循环冷却液的辅助加热冷却回路和散热冷却回路，并获取燃料电池堆冷却液初始温度值；当冷却液初始温度值低于冷启动预设阈值时，燃料电池执行低温快速启动控制策略，冷却液由辅助加热冷却回路进行循环流通；当冷却液初始温度值高于冷启动预设阈值时，燃料电池执行常温启动控制策略，冷却液由散热冷却回路进行循环流通或由辅助加热冷却回路和散热冷却回路同时进行循环流通。本发明能够克服现有技术在环境温度低时冷启动困难或无法启动的缺陷。

Fuel-cell vehicle

燃料电池车具备燃料电池(2)和二次电池(3)。循环流路(12)使制冷剂在燃料电池(2)与散热器(15)之间循环。旁通流路(16)通过所述二次电池(3)。旁通流路(16)的一端与循环流路(12)的散热器(15)的上游侧连接，另一端与散热器(15)的下游侧连接，控制器(30)在制冷剂温度是预定的温度阈值以上的情况下，操作切换阀(14)而使制冷剂流到散热器侧，在所述制冷剂温度小于温度阈值的情况下，操作所述切换阀(14)而使制冷剂流到旁通流路侧。

Catalytic Degradation Recovery Device and Catalytic Degradation Recovery Method

촉매 열화 회복 장치는, 전해질막과, 전해질막의 양면에 마련된 전극 촉매층과, 상기 전해질막을 양면에서 집는 애노드 촉매 및 캐소드 촉매를 포함하여 구성되는 막 전극 접합체를, 애노드 가스 유로를 구비하는 애노드 세퍼레이터 및 캐소드 가스 유로를 구비하는 캐소드 세퍼레이터로 끼움 지지하여 이루어지는 연료 전지를 갖는 연료 전지 시스템의, 애노드 촉매의 일산화탄소 흡착에 의해 저하된 성능을 회복시킨다. 촉매 열화 회복 장치는, 캐소드 가스 유로에 공급되는 산소의 적어도 일부를, 전해질막을 통하여 애노드 촉매로 공급하는 회복 제어부를 구비한다. The catalyst deterioration recovery apparatus includes an anode separator and a cathode including an electrolyte membrane, an electrode catalyst layer provided on both sides of the electrolyte membrane, an anode catalyst and a cathode catalyst that pick up the electrolyte membrane from both sides, and an anode gas flow path. The performance deteriorated by the carbon monoxide adsorption of the anode catalyst of the fuel cell system having the fuel cell fitted by being supported by the cathode separator having the gas flow path is restored. The catalyst deterioration recovery apparatus is provided with a recovery control part which supplies at least a part of oxygen supplied to the cathode gas flow path to an anode catalyst through an electrolyte membrane.

Method for operating fuel cell and controller therefor

복수의 연료 셀들에의 연료 유동 및 산화제 유동으로부터 전기 전력을 생성하도록 구성된 복수의 연료 셀들의 연료 셀 조립체를 포함하는 연료 셀 시스템을 동작시키기 위한 방법으로서, 연료 셀 조립체는 냉각재의 유동을 연료 셀 조립체에 공급하도록 구성된 냉각재 저장 모듈과 조합하여 배열되고, 방법은 냉각재 저장 모듈 내의 냉각재의 온도가 냉각재 온도 문턱값 미만일 때 수행되고, 냉각재를 냉각재 저장 모듈로부터 연료 셀 조립체에 전달하도록 구성된 냉각재 펌프의 활성화 전에 수행되는 제 1 국면, 및 냉각재 펌프의 활성화 후에 수행되는 제 2 국면을 포함한다. CLAIMS What is claimed is: 1. A method for operating a fuel cell system comprising a fuel cell assembly of a plurality of fuel cells configured to generate electrical power from a flow of fuel to and flow of an oxidant to the plurality of fuel cells, the fuel cell assembly configured to direct a flow of coolant to the fuel cell assembly. arranged in combination with a coolant storage module configured to supply to a first phase performed, and a second phase performed after activation of the coolant pump.

FUEL CELL COOLING SYSTEM

A fuel cell cooling system mounted on a vehicle includes a flow path for a coolant; a cooling unit that cools the coolant in a cooling unit flow path; a fuel cell to be cooled through heat exchange with the coolant in a fuel cell flow path; a heat generating body to be cooled through heat exchange with the coolant in a heat generating body flow path; first and second pumps that pump the coolant in the fuel cell and heat generating body flow paths, respectively; and a control circuit. When the vehicle is started, the control circuit performs a first process of actuating the first pump with the second pump stopped, and a second process of actuating the first and second pumps when the temperature of the coolant in the fuel cell or cooling unit flow path exceeds a first reference value during the first process.

FUEL ELEMENT SYSTEM AND METHOD OF OPERATION FUEL ELEMENT SYSTEM

1. Система топливных элементов, содержащая:топливный элемент;первый циркуляционный канал, через который циркулирует первичный охладитель, чтобы возвратить выделяемое тепло, произведенное в системе топливных элементов, включающей в себя топливный элемент;блок сохранения теплоты, сконфигурированный для сохранения вторичного охладителя, который возвратил тепло от первичного охладителя;теплообменник, посредством которого происходит обмен тепла между первичным охладителем и вторичным охладителем;второй циркуляционный канал, не проходящий через блок сохранения теплоты, через который циркулирует вторичный охладитель для обмена теплом с первичным охладителем в теплообменнике;первый циркулятор, сконфигурированный так, чтобы заставить первичный охладитель циркулировать через первый циркуляционный канал;второй циркулятор, сконфигурированный так, чтобы заставить вторичный охладитель циркулировать через второй циркуляционный канал;нагреватель, выполненный с возможностью нагревания вторичного охладителя во втором циркуляционном канале; иконтроллер, сконфигурированный так, чтобы осуществить, для предотвращения замерзания первичного охладителя во время, когда выработка электроэнергии в системе топливных элементов прекращена, первый режим, в котором нагреватель работает, и первый и второй циркуляторы работают.2. Система по п.1, дополнительно содержащая:третий циркуляционный канал, проходящий через блок сохранения теплоты, через который циркулирует вторичный охладитель для обмена теплом с первичным охладителем в теплообменнике; иобходной канал, сконфигурированный для обеспечения соединения между тр РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК H01M 8/04 (13) 2011 142 983 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2011142983/07, 09.03.2010 (71) Заявитель(и): ПАНАСОНИК КОРПОРЭЙШН (JP) Приоритет(ы): (30) Конвенционный приоритет: 25.03.2009 JP 2009-074933; 08.03.2010 JP 2010-050890 (85) Дата начала рассмотрения заявки PCT на ...

Cooling system for fuel cell using thermosiphon

The present invention relates to a cooling system for a fuel cell. In particular, the cooling system is configured to cool a fuel cell by circulating a refrigerant in the fuel cell. According to the present invention, the cooling system for a fuel cell comprises: a first three-way valve which includes a 1A connector, a 1B connector, and a 1C connector, wherein the 1A connector is connected to a refrigerant discharging side of the fuel cell; a second three-way valve which includes a 2A connector, a 2B connector, and a 2C connector, wherein the 2A connector is connected to a refrigerant introducing side of the fuel cell; a first radiator which is disposed on a first connection passage connecting the 1B connector and the 2B connector, and is placed higher than the fuel cell; a second radiator which is disposed on a second connection passage connecting the 1C connector and the 2C connector; a pump which is disposed on the second connection passage; and a control device which controls the first three-way valve and the second three-way valve so that the refrigerant passes through at least one of the first connection passage and the second connection passage.

Fuel cell system

本发明涉及燃料电池系统，在适当的时刻实施吹扫。该燃料电池系统是搭载于车辆的燃料电池系统。该燃料电池系统具备：气体供给部，能够向燃料电池的内部供给吹扫气体；以及控制部，在所述车辆的停止时，控制所述气体供给部而执行基于所述吹扫气体的扫气处理。所述控制部多次取得所述车辆的行驶时的环境温度，在所述取得的行驶时的环境温度中的最后取得的环境温度小于规定的阈值的情况下，与所述最后取得的环境温度超过所述阈值的情况相比，提高扫气能力来执行所述扫气处理。

The control of fuel battery cooling system in vehicle

本公开涉及车辆中的燃料电池冷却系统的控制。一种车辆中的燃料电池系统包括燃料电池堆和用于冷却燃料电池堆的冷却系统。冷却系统具有散热器和被配置为将冷却剂供应到燃料电池堆的至少一个泵。控制器响应于指示车辆的下一次启动将是冷启动的状况而运行冷却系统，以在车辆被关闭时主动地冷却燃料电池。控制器随后可在启动冷却之后对燃料电池堆进行净化。