CONTROL OF THE CHARGING CONDITION OF AN ELECTRIC ACUMULATOR

... 1420586 Charging batteries BOLIDEN AB 8 July 1974 [13 July 1973] 30085/74 Heading H2H Apparatus for charging a battery B comprises a charging source 5, the state of charge of the battery being indicated by the generation of gas during charging, an indication of the gas generation being provided by differentiating with respect to time in a differentiator 1, the terminal voltage of the battery, differentiating with respect to time in a second differentiator 2, the derivative obtained by the differentiator 1, rectifying the output of the differentiator 2 by a rectifier 3 to obtain a D.C. voltage which is filtered in a filter 4. The filtered D.C. voltage is a measure of the amount of gas generated in the battery and the level of this voltage is sensed by a device 6 the output of which is used to control the charging source 5 such that the level of gas generation by the battery during charging is maintained at a predetermined constant low level.

METHOD AND APPARATUS FOR LIMITING THE CHARGE OF A STORAGE CELL

... 1431966 Battery charging systems; DC-DC converters SAFT SOC DES ACCUMULATEURS FIXES ET DE TRACTION 15 Oct 1973 [13 Oct 1972] 48023/73 Headings H2F and H2H The charging current of a battery is limited when the rate of increase of charging current with respect to time reaches a predetermined value after passing through zero. The invention is based on the phenomenon that as the battery becomes fully charged, the charging current increases because of a decrease in the battery internal resistance due to increase in temperature. As shown in Fig. 2, the battery 1 is charged from a supply +V, -V, obtained from a rectifier (not shown), the current being monitored by means of a Hall probe or magnetic transductor or, by a low value resistor 15, the resulting voltage being amplified at 16 and fed to a further circuit (Fig. 3) for determining the rate of change of current. Analogue rate of increase of charging current circuit.-Fig. 3 shows an arrangement in which capacitor 30 is charged substantially ...

Apparatus for controlling charging of a storage battery

The apparatus initially charges a storage battery 8 in a constant current charging mode and then in a constant voltage charging mode when the charging voltage reaches a predetermined level as detected by a circuit 9. The constant voltage mode is terminated when a current sensor 11 detects an increase in charging current. The voltage detector 9 also operates switching means 10 and starts a timer 13. Switching means 10 activates current detector 11 and also resets it via a circuit 12. Timer 13 terminates the constant voltage mode if it lasts for more than a preset time. Manually applied inputs V9, V10 allow either of two preset times to be selected according to the capacity of the battery 8. ...

SCHALTUNGSANORDNUNG ZUM LADEN EINER AKKUMULATORENBATTERIE

BATTERY CHARGER

Method for limiting the charging process of an accumulator battery

Method for fast charging lithium-ion batteries

A method for charging a battery comprises: measuring a battery voltage with a voltage sensor and a battery current with a current sensor; applying, with a charging circuit, a first charging current to the battery until the measured battery voltage exceeds a predetermined voltage threshold, a magnitude of the first charging current being held at a first constant value; applying, with the charging circuit, in response to the measured battery voltage exceeding the predetermined voltage threshold, a second charging current to the battery until a cutoff criterion is satisfied, a magnitude of the second charging current being such that the battery voltage exceeds a steady state voltage limit for the battery; after the cutoff criterion is satisfied, determining a rest voltage of the battery; and updating the cutoff criterion based on a difference between the determined rest voltage and a target rest voltage.

Battery Charger with Battery State Detection

A battery charger and method is disclosed for detecting when a battery has a low state of health while simultaneously charging or maintaining the battery. A battery charger includes a processor; a non-transitory memory device; a power management device to receive an input power and to output a charging current; a pair of electrical conductors to electrically couple with a battery, and a display electrically coupled to the processor. The display being configured to indicate a bad battery indicator when the battery has a low state of health and whether the battery is good to start. 1. A battery charger configured to identify a bad battery condition for a lead acid battery , the battery charger comprising:a processor operatively coupled with a voltage sensor;a non-transitory memory device operatively coupled with the processor;a power management device to receive an input power and to output current during a charging process;a display device electrically coupled to the processor; and monitor, using the voltage sensor, a voltage measured across the pair of electrical conductors to identify a voltage drop suggesting an ignition process of an engine coupled to the lead acid battery, wherein the voltage measured across the pair of electrical conductors is stored to the non-transitory memory device;', 'apply an external load to the lead acid battery;', 'monitor, using the voltage sensor, a loaded voltage measured across the pair of electrical conductors with the external load applied to the lead acid battery; and', 'display a bad battery indicator via the display device if the loaded voltage drops below a voltage value stored to the non-transitory memory device., 'a pair of electrical conductors to electrically couple with the lead acid battery, wherein the battery charger is configured to2. The battery charger of claim 1 , wherein the voltage drop is at least 2 volts.3. The battery charger of claim 1 , wherein the battery charger is configured to abort the charging process ...

УСТРОЙСТВО ДЛЯ ЗАРЯДКИ БАТАРЕЙ

Изобретение относится к устройству заряда аккумуляторной батареи. Описана схема (120) переключения заданного тока, имеющая компаратор (127). На один вход (-) компаратора подают сигнал температуры батареи, соответствующий температуре батареи, обнаруженной блоком (8) определения температуры батареи, а на другой вход (+) компаратора подают опорный сигнал, соответствующий температуре начала разряда. Технический результат - изменение величины заданного зарядного тока блока (80) установки зарядного тока и величины заданного тока полного заряда блока (90) установки тока полного заряда соответственно выходному сигналу компаратора. 6 з.п. ф-лы, 4 ил.

УСТРОЙСТВО УПРАВЛЕНИЯ БАТАРЕЕЙ, УСТРОЙСТВО НАКОПЛЕНИЯ ЭНЕРГИИ, СПОСОБ НАКОПЛЕНИЯ ЭНЕРГИИ И ПРОГРАММА

Использование - в области электротехники. Технический результат - обеспечение стабильной величины энергии аккумуляторной батареи. Устройство (100) управления батареей включает в себя: измерительный модуль (110), который индивидуально измеряет величину разрядного тока разряжающейся аккумуляторной батареи из числа множества аккумуляторных батарей, которые независимо заряжаются и разряжаются; модуль (120) вычисления времени, который вычисляет время, требуемое для того, чтобы аккумуляторная батарея имела постоянную емкость батареи для каждой разряжающейся аккумуляторной батареи, на основе номинального значения разрядного тока для каждой аккумуляторной батареи, которое вычисляется на основе величины разрядного тока, и SOC аккумуляторной батареи; модуль (130) вычисления количества, который вычисляет ожидаемое количество аккумуляторных батарей, которые станут полностью заряженными за требуемое время, на основе номинального значения зарядного тока для каждой аккумуляторной батареи, которое вычисляется ...

Verfahren und Vorrichtung zur Messung der Restkapazität einer Batterie eines Elektroautos

PROCEDURE AND CIRCUIT VARIANTS FOR THE LOADING OF ACCUMULATORS.

BATTERY CHARGERS

Battery charger

METHOD AND A DEVICE FOR DETERMINING GAS GENERATION WITH ELECTRODES IN CONTACT WITH ELECTROLYTES

AUTO-START AND MAGNETIC SHUT DOWN BATTERY CHARGING AND SURVEILLANCE CIRCUITS

AUTO-START AND MAGNETIC SHUT DOWN BATTERY CHARGING AND SURVEILLANCE CIRCUITS Battery charging and surveillance circuits are provided which may have either shunt regulation or series regulation of the control coil. Automatic start up of the charging sequence is initiated when a battery is connected to the output terminals by providing a latch circuit which is powered from a capacitor charged from the high ripple voltage at the open output, which capacitor voltage collapses and causes a one-shot circuit to close, which closes a control power cut-off device in series with the control coil, thereby initiating a battery charging sequence. When the battery is to be disconnected, either a push button switch may be momentarily closed or a latch operates to open the cut-off device, thus causing the output voltage of the battery charging circuit to fall below that of the battery -- the power diodes in the circuit preclude back-charge from the battery -- so that the battery may then be disconnected ...

A method for operating a battery charger, and a battery charger

The present invention relates to a method for operating a battery charger, and a battery charger. The method comprising the steps of determining a capacity of the battery, determining an initial charging current, apply the calculated initial charging current as a charging current to the battery, determining the voltage change with time ΔV/Δt for the voltage over the battery, adjusting the charging current based on the ΔV/Δt.

External battery charging unit

There is disclosed a mobile device comprising: a battery module configured to receive at least one rechargeable battery, a device circuitry module configured to communicate between the battery module and a charging circuit located on an external charging unit; and, a connector port configured to couple the external charging unit to the battery module for providing an electrical charge to said at least one rechargeable battery.

Power conversion system

When a plurality of storage batteries is used by connecting them in parallel, since the progress of degradation differs among the storage batteries, a power conversion system includes a degradation information acquisition device for acquiring the degradation information of the storage batteries, a temperature information acquisition device for detecting the temperature information of the storage batteries, and a control device for controlling the storage battery power converter based on the degradation information of the storage batteries by the degradation information acquisition device and the temperature information of the storage batteries by the temperature information acquisition device so that the degradation states of the plurality of the storage batteries can be matched.

Systems and methods of direct cell attachment for batteries

Embodiments of the systems and methods of direct cell attachment for battery cells disclosed herein operate without the protection FETs and the protection IC, thereby enabling the direct attachment of battery cells to the system without compromising safety. A charger IC comprises a switching regulator whose output is used to charge the battery through a pass device. In example embodiments of the disclosed systems and methods of direct cell attachment, a combination of switching FETs and the pass device are used as a protection device instead of the charge and discharge FETs. During normal operation, the pass device may be used to charge the battery using the traditional battery charging profile. Under fault condition, the switching FETs and pass device may be driven appropriately to protect the system.

CHARGING MANAGEMENT SYSTEM AND METHOD, DEVICE, AND STORAGE MEDIUM

Embodiments of the present invention disclose a charging management system and method, a device, and a storage medium, wherein the system includes a microprocessor configured for acquiring current electric quantity parameters of at least two to-be-charged batteries; a control terminal of the microprocessor is connected to a controlled terminal of at least two charging circuit switches for determining whether to charge the at least two to-be-charged batteries according to the current electric quantity parameters and controlling an on-or-off state of any of the at least two charging circuit switches according to a working state of a power source. In the embodiments of the present invention, the microprocessor centrally manages a condition of charging multiple to-be-charged batteries with multiple power sources, without a DC-DC circuit, and realizing the automatic charging management of multiple to-be-charged batteries at reduced hardware costs.

Verfahren und Vorrichtung zur Messung der Restkapazität einer Batterie eines Elektroautos

Battery management system

The present application provides a battery management system for a lithium sulphur cell. The battery management system comprises a charging module configured to charge a lithium sulphur cell; and a logical module configured to control the charging module to charge the lithium sulphur cell to a shuttle reduction state of charge. The shuttle reduction state of charge is equal to or lower than a predetermined shuttle state of charge at which a first derivative of a state of charge of the lithium sulphur cell during charging with respect to one of time or charge is within a predetermined first derivative threshold of zero and at which a second derivative of the state of charge of the lithium sulphur cell during charging with respect to one of time or charge is within a predetermined second derivative threshold of zero at the same value of time or charge at which the first derivative is within the predetermined first derivative threshold of zero.

Battery management system

A regulator control circuit

A regulator control circuit 252 controls a switching regulator 251, particularly as part of a braking system for a vehicle. A feedback comparator 2523 compares a reference voltage 2521 signal with a voltage output signal 26 of the switching regulator and controls operation of the switching regulator accordingly. A current feedback controller 2526 is connected to the feedback comparator and receives current output signal by the switching regulator and determines whether the regulator control circuit adopts a first or second mode of operation. In the first mode of operation, the control signal controls the switching regulator in accordance with a constant voltage control scheme and, in the second mode of operation, the control signal controls the switching regulator in accordance with a constant current control scheme. The second mode may be adopted when the current output signal by the switching regulator exceeds a predetermined current. The regulator control circuit may form part of a sensor ...

APPARATUS FOR CONTROLLING CHARGING OF A STORAGE BATTERY

BATTERY CHARGER

... 1326335 Battery charging systems WESTINGHOUSE ELECTRIC CORP 28 Feb 1972 [25 March 1971] 9081/72 Heading H2H A battery charger with controllable rectifiers comprises control means for limiting the charging current 15 to a first value, reducing this to a second (lower) value when the terminal voltage of the battery increases to a first voltage value, and to a third value e.g. zero, when the terminal voltage increases to a second (fully charged) value, and to increase the charging current if the terminal voltage subsequently decreases. In Fig. 2, A.C. power source 10 is used to charge battery 14 via controlled rectifier 12, the priming of which is controlled by the conduction of unijunction transistor 88. The power source 10 is also connected to rectifier bridge 60 to supply a reference voltage. Transistor 78 is arranged to conduct during negative half cycles, and this prevents transistor 88 from conducting. The conduction of transistor 88 also depends on the charging of capacitor 100 which ...

BATTERY STATE DETECTION SYSTEM AND METHOD

A battery charger and method is disclosed for detecting when a battery has a low state of health while simultaneously charging or maintaining the battery. A battery charger includes a processor; a non-transitory memory device; a power management device to receive an input power and to output a charging current; a pair of electrical conductors to electrically couple with a battery, and a display electrically coupled to the processor. The display being configured to indicate a bad battery indicator when the battery has a low state of health and whether the battery is good to start.

METHOD OF CHARGING BATTERIES AND APPARATUS THEREFOR

A method of fast charging batteries by means of precise analysis of the profile of the variation with time of a characteristic of the battery which is indicative of the variation in stored chemical energy as the battery is charged. The method specifically comprises analyzing the profile for the occurrence of a particular series of events preferably including one or more inflection points which precisely identify the point in time at which the application of a fast charge rate should be discontinued. Additional methods of analysis provide for termination or control of the charging current upon the occurrence of other events such as limiting values on time, voltage or voltage slope or a negative change in the level of stored energy. Apparatus for performing these methods comprises a suitable power supply and a microcomputer for analyzing the profile and controlling the power supply.

Adaptive CC-CV transition circuit and power management method

An adaptive constant current-constant voltage (CC-CV) transition circuit comprises an amplifier, a series-pass device with current sense, a feedback network and a constant current controller to provide a stable and smooth transition between a constant voltage mode and a constant current mode, and vice versa. A voltage regulator loop comprises an amplifier, an optional buffer, a series-pass device with current sense and a feedback network which provides a feedback voltage to the amplifier. A current regulation loop comprises the amplifier, the optional buffer, the series-pass device, the feedback network and a constant current controller comprising a trans-impedence amplifier and a transconductance comparator which generate a current signal to a pseudo-constant bias (PCB) and a voltage signal to the adaptive compensation network (ACN) of the amplifier.

Overcharge protection circuit and method of controlling the same

An overcharge protection circuit may include a battery, a battery management system (BMS) having an overcharge sensing unit for detecting cell voltage of the battery, comparing the cell voltage with a preset overcharge voltage, and then generating either a signal indicative of normal connection of the battery or an overcharge signal depending on a result of the comparison and a switch control unit for generating a control signal depending on a result of comparing a hold-up time of the overcharge signal with a preset hold-up time of the overcharge signal, and a switch for connecting or blocking a power source for supplying charging power to the battery in response to the control signal.

Apparatus for digital battery charger and associated methods

An apparatus includes a digital battery charger. The digital battery charger includes an analog-to-digital converter (ADC) to convert a terminal voltage of a battery to a first digital signal. The digital battery charger further includes a digital controller coupled to the ADC to receive the first digital signal and provide a set of control signals. The digital battery charger further includes a current digital-to-analog converter (IDAC) coupled to the digital controller to receive the set of control signals and to provide a battery charging current signal.

УСТРОЙСТВО ДЛЯ ЗАРЯДКИ БАТАРЕЙ

... 1. Устройство для зарядки батарей, содержащее ! схему регулирования зарядного тока для регулирования зарядного тока в соответствии с заданной величиной зарядного тока, ! схему определения полного заряда для генерирования сигнала останова зарядки, когда зарядный ток не превышает заданную величину тока полного заряда, и ! блок определения температуры батареи для определения температуры заряжаемой вторичной батареи, ! схему переключения заданного тока, включающую компаратор, на вход которого подается сигнал температуры батареи, соответствующий температуре батареи, измеренной блоком определения температуры батареи, и опорный сигнал, соответствующий температуре начала разряда, для варьирования заданного значения зарядного тока и заданного значения тока полного заряда соответственно выходу компаратора. ! 2. Устройство по п.1, в котором блок определения температуры батареи способен обнаруживать изменение сопротивления термочувствительного элемента, входящего в заряжаемую вторичную батарею. ! 3 ...

METHOD AND DEVICE FOR CHECKING A STORAGE BATTERY

... 1494458 Battery testing COMPAGNIE EUROPEENNE D'ACCUMULATEURS SA 8 June 1976 [24 June 1975] 23626/76 Heading G1U In an acceptance/reject test for a multicell battery, in turn, the rising voltage across a cell of the battery resulting from the application of a charging current, is compared with the average of the rising voltages across all of the cells of the battery. Three possibilities arise: in the first, the voltage B, Fig. 2, plotted against time, of the cell under test remains below the average voltage M B of all the cells, and the cell (and hence the battery) is judged defective if the maximum difference M B -B exceeds a reference value; in the second Fig. 3, (not shown) the voltage C of the cell under test remains above the average voltage M C , and the cell is judged defective if the maximum difference C-M C exceeds a reference, and in the third, Fig. 4, the voltage D of the cell under test crosses the average voltage MD, and the cell is judged defective if the sum of the maximum ...

BATTERY CHARGING

DEVICE FOR MONITORING THE CHARGING CURRENT FOR A BATTERY OF STORAGE ACCUMULATORS

... 1456737 Measuring battery parameters SOC NATIONALE INDUSTRIELLE AEROSPATIALE 9 April 1974 [17 April 1973] 15676/74 Heading G1U A battery monitoring circuit releases an alarm if the battery charging current continuously increases during a predetermined time period. Charging current in an accumulator is monitored by placing a small resistance 2 (e.g. an ammeter shunt) in the earth lead and measuring the voltage between its terminals. A steadily increasing charging current is used to shut-off the charging supply and light an alarm. Amplifier 3 is used to detect the voltage, a reference level being set by resistor 4. Amplifier 6 only provides a positive output if the accumulator is charging. A switch 7 is closed once per minute by control generator 8 and the voltage value is thus stored on capacitor 9. This is inverted by unity gain feedback amplifier 10 and combined with the instantaneous voltage value via line 11 in amplifier 12 which provides a positive output if the value increases. An ...

AUTOMATIC BATTERY-CHARGING

... 1428671 Charging batteries HARMER & SIMMONS Ltd 24 April 1973 [13 March 1972 4 May 1972] 11611/72 and 20792/72 Heading H2H A method of charging a battery, particularly a lead acid battery, comprises charging the battery at a first high current rate until a predetermined battery voltage is reached after which the battery is charged at the first rate or at a second rate less than the first charging rate, the charging current is periodically measured to determine whether or not the battery is fully charged. A battery 2 is charged from an A.C. source by way of a charging device 1, a triac 3 being rendered conductive when the high charging current is required and the triac 4 when a reduced charging current is required, the gate signals for the triacs being developed by oscillators 11, 12 respectively, shown in Fig. 2. The battery voltage is applied to a terminal 21 and thence to a voltage level detector 5 which is connected to an oscillator 6. Until the battery voltage attains a predetermined ...

SWITCHING CONFIGURATION TO THE SHOP OF A STORAGE BATTERY

CURRENT INTEGRATING BATTERY CHARGER

PROCESS AND CIRCUIT VERSIONS FOR CHARGING ACCUMULATORS

A METHOD FOR THE DETECTION OF ARC FAULTS WHEN CHARGING ELECTRIC BATTERY SYSTEMS

The invention relates to a method (58) for detecting accidental arcs (60) during the charging of electrical battery systems (4), in particular lead storage batteries, which are electrically interconnected in series to form a string (10), which is fed by means of a direct-voltage converter (18). A first value (64) corresponding to a voltage (30) present at the string (10) and a second value corresponding to an electric current (32) flowing through the string (10) are created. As a first condition, it is checked whether the first value (64) changes by more than a first limit value (78) within a first time frame (76). As a second condition, it is checked whether the second value (70) changes by more than a second limit value (84) within a second time frame (82). An arc (60) is detected if the first condition and the second condition exist within a third time frame (88). The invention further relates to a method (2) for producing electrical battery systems (4), in particular lead storage batteries ...

Battery Charger with Battery State Detection

A battery charger and method is disclosed for detecting when a battery has a low state of health while simultaneously charging or maintaining the battery. A battery charger includes a processor; a non-transitory memory device; a power management device to receive an input power and to output a charging current; a pair of electrical conductors to electrically couple with a battery, and a display electrically coupled to the processor. The display being configured to indicate a bad battery indicator when the battery has a low state of health and whether the battery is good to start.

DEVICE TO BE CHARGED AND WIRELESS CHARGING METHOD AND SYSTEM

Battery state detection system and method

A battery charger and method is disclosed for detecting when a battery has a low state of health while simultaneously charging or maintaining the battery. A battery charger includes a processor; a non-transitory memory device; a power management device to receive an input power and to output a charging current; a pair of electrical conductors to electrically couple with a battery, and a display electrically coupled to the processor. The display being configured to indicate a bad battery indicator when the battery has a low state of health and whether the battery is good to start.

PROCESS AND CIRCUIT VERSIONS FOR CHARGING ACCUMULATORS

DUAL VOLTAGE RANGE CHARGING STATION

A power circuit for a dual voltage range charging station is disclosed. The power circuit comprises a first group comprising at least one DC power module, the first group having a first corresponding terminal and a second corresponding terminal; a second group comprising at least one DC power module, the second group having a first corresponding terminal and a second corresponding terminal; a configuration selection unit operatively connected to the first corresponding terminal of the first group, to the second corresponding terminal of the first group, to the first corresponding terminal of the second group and to the second corresponding terminal of the second group; wherein in a first configuration, the first corresponding terminal of the first group is operatively connected to the first corresponding terminal of the second group and the second corresponding terminal of the second group is operatively connected to the second corresponding terminal of the second group and a first given ...

METHOD AND APPARATUS FOR CONTROLLING A BATTERY BANK

DESCRIPTIF Procédé et dispositif de contrôle d'une batterie d'accumulateurs montés en série, le procédé comportant les opérations suivantes : on fait passer dans la batterie une impulsion de courant de charge, on mesure la tension transitoire élémentaire aux bornes de chaque accumulateur, on compare les tensions transitoires élémentaires à la tension transitoire moyenne desdits accumulateurs, on élimine la batterie si la valeur absolue de la différence entre ladite tension transitoire moyenne et une desdites tensions transitoires élémentaires, lorsque ladite différence garde un signe constant, devient supérieure à un seuil prédéterminé, et, lorsque ladite différence change de signe, si la somme des valeurs absolues maximales des différences de signe constant devient supérieure à un seuil prédéterminé.

ELECTRONIC APPARATUS AND METHOD FOR CONTROLLING THE SAME

An electronic apparatus including a Universal Serial Bus (USB) Type-C™ connector includes a connection detection unit configured to detect a connection of a power source connected to the electronic apparatus via the USB Type-C connector, a power supply control unit configured to receive a supply of power from the connected power source, a communication control unit configured to communicate with the power source via a Configuration Channel (CC) terminal, an information acquisition unit configured to acquire a remaining capacity of the power source using the communication control unit every predetermined time, and a control unit configured to, in a case where a difference between a first remaining capacity acquired by the information acquisition unit and a second remaining capacity acquired after the first remaining capacity is acquired is greater than or equal to a predetermined amount, give a user notification.

ACTIVE CELL BALANCING IN BATTERIES USING SWITCH MODE DIVIDERS

A battery cell balancing system contains a switch mode circuit employing voltage sensors across the cells and current on the balancing legs to enable reliable and efficient cell balancing during battery charge.

Charging device

The invention relates to charging devices for electrical accumulators. An object was to achieve a charging current which is largely independent of the internal resistance and charge state of the accumulator as well as of voltage fluctuations of the mains, and to reduce this current automatically when more than 90% of full charge has been reached. A further object was the arrangement of a measurement of the rising accumulator voltage during charging which is sufficiently precise and easy to read off that the charge state can be determined thereby. A further object was to facilitate the individual charging of a plurality of simultaneously connected accumulators using only one charging device. The objects are achieved particularly economically by a special thryistor circuit which is supplied with the multiple voltage of the accumulator, a high precision digital voltmeter, matched thereto, and an electronic stepping switch.

VERFAHREN UND VORRICHTUNG ZUR BEGRENZUNG DER LADUNG EINER AKKUMULATORENBATTERIE MIT KONSTANTER SPANNUNG

CURRENT INTEGRATING BATTERY CHARGER

A battery charger employs an integrator and current switch in combination with a control circuit. The control circuit receives a synchronizing signal at the start of each charging cycle as determined by a cyclical supply or pulse generator as well as information about the state of the integrator which is compared with the predetermined average current. The aforementioned information determines the required control signals for the integrator and current switch so as to maintain the value of the charging current substantially constant throughout the charging time. The charger also includes a current sensor for sensing the current flow through the battery being charged and which supplies the integrator with the value of sensed current.

Detection of device removal from a surface of a multi-coil wireless charging device

Systems, methods and apparatus for wireless charging are disclosed. A charging device has a plurality of charging cells provided on a charging surface, a charging circuit and a controller. The controller may be configured to cause the charging circuit to provide a charging current to a resonant circuit when a receiving device is placed on the charging surface, provide a measurement slot by causing the charging circuit to decrease or terminate the charging current for a period of time and determine whether the receiving device has been removed from the charging surface based on measurement of a characteristic of the resonant circuit during the measurement slot. The characteristic of the resonant circuit may be representative of electromagnetic coupling between a transmitting coil in the resonant circuit and a receiving coil in the receiving device.

SETT FOR BEGRENSNING AV LADDNINGSFORLOPPET FOR ETT ACKUMULATORBATTERI

Highly accurate over current fault protection for battery packs

This disclosure relates generally to the field of providing highly accurate over current fault protection in charging systems and, more particularly, to systems in which the charge over current protection (COCP) and discharge over current protection (DOCP) circuitry in electronic devices are particularly resilient to variations in field-effect transistor (FET) resistance with temperature, gate drive, and/or process shift; variations in printed circuit board (PCB) resistance; and variations in integrated circuit (IC) trip voltages. Through the use of novel circuit designs disclosed herein that effectively “bypass” the traditional “power FETs” that control the current flow to the battery pack(s) of the electronic device using a novel “sense FET” concept, the major sources of error in current sensing may be eliminated without compromising any safety features of the electronic device, thus allowing for more accurate over current fault protection systems for battery packs across a wide range ...

System and method for battery control using RMS current

A method according to an exemplary aspect of the present disclosure includes, among other things, monitoring a root mean square (RMS) current of a component for a time window, and adjusting a flow of current relative to a battery such that a slope of the RMS current gradually approaches zero as the RMS current approaches an RMS current limit for the time window.

Battery charger with battery state detection

A battery charger and method is disclosed for detecting when a battery has a low state of health while simultaneously charging or maintaining the battery. A battery charger includes a processor; a non-transitory memory device; a power management device to receive an input power and to output a charging current; a pair of electrical conductors to electrically couple with a battery, and a display electrically coupled to the processor. The display being configured to indicate a bad battery indicator when the battery has a low state of health and whether the battery is good to start.

METHOD OF CHARGING BATTERIES AND APPARATUS THEREFOR

VERFAHREN UND SCHALTUNGSVARIANTEN ZUM LADEN VON AKKUMULATOREN.

Battery management system

Method for charging or discharging a battery in order to determine the end of charging or discharging on the basis of measurements of current and temperature

The invention relates to a method for charging or discharging a battery (1), which comprises a measurement of the voltage (Ub) across the battery terminals, and the comparison of the measured voltage (Ub) with an end of charge or discharge threshold voltage. The method also comprises a temperature measurement (Tb) representative of the battery temperature, and a measurement of the current (1b) flowing inside the battery (1), in order to form a pair of measurements. The charging or discharging of the battery is stopped when the threshold voltage is reached.

PROCESS FOR ULTRA-RAPIDLY CHARGING A SEALED NICKEL-CADMIUM STORAGE BATTERY

BATTERY CHARGER

carregador de baterias

Energy storage device and control method thereof

The present disclosure illustrates an energy storage device. The energy storage device receives energy through an energy input interface, or charging an electronic device through an energy output interface. The energy storage device includes an adapter, an energy storage unit and a charger module. The adapter provides an input current to the charger module, and the charger module provides a first current to the energy storage unit. Or, the charger module provides the input current to the electronic device. When the input current provided by the adapter is higher than a maximum safe current of the adapter, the energy storage unit provides a second current to the charger module. The charger module outputs energy to the electronic device based upon the second current to assist the adapter with charging the electronic device. The second current is opposite to the first current.

Charging method for a rechargeable battery and charging architecture therewith

A charging method for a rechargeable battery and a related charging architecture are provided. The provided charging method includes following steps. A characteristic curve of the rechargeable battery related to charge cycle vs. a residual capacity of a non-constant voltage charging stage under a warranty life limitation is provided. An expected residual capacity corresponding to a condition when a terminal voltage of the rechargeable battery reaches a limited charge voltage is found from the characteristic curve related to the charge cycle vs. the residual capacity of the non-constant voltage charging stage by using a current charge cycle count of the rechargeable battery. A real residual capacity corresponding to a condition when the terminal voltage of the rechargeable battery reaches the limited charge voltage approaches to the expected residual capacity by adjusting a charging current of the rechargeable battery.

Device for charging accumulators

A device for charging accumulators or batteries provides a substantially constant charging current for a first charging interval until a voltage level which is less than that of a fully charged accumulator is reached. At this time, the device continues charging in a sequence of subsequent time intervals with charging currents which decrease at different rates in each interval until the accumulator is fully charged. The duration of each of the subsequent time intervals and the rates at which the charging currents decrease may be adjusted to shorten charging time while minimizing gasification of water in the accumulator. The device can also be used to maintain the accumulator charged at a given float voltage.

ENERGY STORAGE SYSTEM

An energy storage system has one or more energy storage units, each energy storage unit including one or more energy storage modules, and each energy storage module including a plurality of electrochemical energy storage devices connected in series. A DC switching device is provided in series with the or each energy storage unit. The DC switching device includes a semiconductor device and a rectifying unit in parallel with the semiconductor device.

Method of controlling charging of plurality of batteries and electronic device to which the same is applied

A method of controlling charging of a plurality of batteries and an electronic device to which the same is applied are provided. The electronic device includes a housing, a plurality of batteries arranged in the housing, a power management module that controls the plurality of batteries, a plurality of current limiting ICs that limits a maximum intensity of a current flowing into each of the plurality of batteries, and at least one processor operationally connected to the plurality of batteries, the power management module and the plurality of current limiting ICs. The at least one processor may set a total charging current output from the power management module, set an individual charging current flowing into each of the plurality of batteries in proportion to a total capacity of each of the plurality of batteries, and recalculate the individual charging currents when the total charging current changes.

LADESTEUEREINRICHTUNG

Eine Ladesteuereinrichtung (100) weist auf: einen Stromrichter (32), der Wechselstromleistung in Gleichstromleistung umwandelt und die Gleichstromleistung an eine Speicherbatterie (10) liefert, die in einem EV (1) montiert ist; und eine Steuereinrichtung (33), die bestimmt, ob das Laden der Speicherbatterie (10) des EV (1), das gerade durch den Stromrichter (32) durchgeführt wird, unterbrochen werden soll, auf Basis des Wertes eines Stroms, der vom Stromrichter (32) zur Speicherbatterie (10) des EV (1) fließt, wenn die Speicherbatterie (10) des EV (1) gerade geladen wird.

DEVICE FOR CHARGING ACCUMULATORS

Battery chargers

The battery charger employs integrator means and current switch means in combination with a control circuit whereby the control circuit receives a synchronizing signal at the start of each cycle as determined by a cyclical supply or pulse generator as well as information about the state of the integrator means which is compared with the predetermined average current such information determining the required control signals for the integrator means and current switch means so as to maintain the value of the average charging current substantially constant throughout the charging time. Current sense means being provided to sense the current flow through battery and supply the integrator means with said sensed current.

Apparatus for controlling charging of a storage battery

PROCESS FOR ULTRA-RAPIDLY CHARGING A SEALED NICKEL-CADMIUM STORAGE BATTERY

CHARGING BATTERIES

EMERGENCY DRIVER SYSTEM FOR PROVIDING A LOW FLOAT CHARGE POWER TO A RECHARGEABLE BATTERY

An emergency driver system is disclosed for providing a low float charge power to a rechargeable battery. For one example, an emergency light emitting diode (LED) driver system includes a LED light source, a rechargeable battery, and emergency (EM) driver. The emergency LED driver system can also include a multi-color indicator circuit configured to a provide at least two LED light indicators providing information regarding the mode of operation for the EM driver. The rechargeable battery is coupled with the LED light source. The EM driver is coupled with the rechargeable battery and the LED light source. In one example, the EM driver includes a charge circuit configured to supply a charge current to the rechargeable battery, and a micro-controller unit configured to control the charge current from the charge circuit such that a power loss in at least standby mode is less than 0.5 watts (W). The rechargeable battery can be a LiFePO4 rechargeable battery providing an emergency illumination ...

Wireless charging system and method for controlling the same

There is provided a wireless charging system, including: a wireless power transmitting module including at least one power transmitter transmitting power and at least one wireless power receiving module receiving the power, wherein the wireless power transmitting module controls the power, which is transmitted to the wireless power receiving modules corresponding to the power transmitters, from the power transmitters, depending on targeted voltage gains of the wireless power receiving modules corresponding to the power transmitters.

Battery Charger with Battery State Detection

A battery charger and method is disclosed for detecting when a battery has a low state of health while simultaneously charging or maintaining the battery. A battery charger includes a processor; a non-transitory memory device; a power management device to receive an input power and to output a charging current; a pair of electrical conductors to electrically couple with a battery, and a display electrically coupled to the processor. The display being configured to indicate a bad battery indicator when the battery has a low state of health and whether the battery is good to start.

SYSTEM AND METHOD FOR BATTERY CONTROL USING RMS CURRENT

A method according to an exemplary aspect of the present disclosure includes, among other things, monitoring a root mean square (RMS) current of a component for a time window, and adjusting a flow of current relative to a battery such that a slope of the RMS current gradually approaches zero as the RMS current approaches an RMS current limit for the time window.

Transient Battery Power Management

A vehicle includes a processor programmed to create a virtual energy bucket for a battery, and set a short-term power limit corresponding to the virtual energy bucket that defines a discharge limit for the battery. The virtual energy bucket fills responsive to an output power of the battery being below a first power threshold and depletes responsive to the output power being above a second power threshold.

Ladegerät

Ein Ladegerät zum Laden einer Speicherbatterie beinhaltet eine erste Schaltung, die einen Strom erzeugt, der von einem Ladestrom der Speicherbatterie abhängt; eine zweite Schaltung, in der elektrische Ladung durch regelmäßige Zuführung des vom Ladestrom abhängigen Stroms angesammelt wird; und eine dritte Schaltung, die ein Signal, das Abschluss eines Ladens der Speicherbatterie anzeigt, ausgibt, wenn das Potential der zweiten Schaltung ein Bezugspotential erreicht. Die zweite Schaltung beinhaltet einen Kondensator und einen Transistor, bei dem ein Oxidhalbleiter für einen Kanalbildungsbereich verwendet wird. Der Transistor wird als Antwort auf ein Impulssignal, das in ein Gate des Transistors eingegeben wird, eingeschaltet oder ausgeschaltet. Der Kondensator sammelt elektrische Ladung an, wenn der vom Ladestrom abhängige Strom durch den Transistor fließt.

BATTERIELADEGERAET

A regulator control circuit

BATTERY CHARGERS

ENERGY STORAGE SYSTEM

An energy storage system comprises one or more energy storage units (1), each energy storage unit comprising one or more energy storage modules (5), and each energy storage module comprising a plurality of electrochemical energy storage devices connected in series. A DC switching device (10a, 11a) is provided in series with the or each energy storage unit (1). The DC switching device comprises a semiconductor device (10a, 10b) and a rectifying unit (11a, 11b) in parallel with the semiconductor device ...

Battery charging apparatus and battery charging protection control method

The present disclosure provides a battery charging apparatus and a battery charging protection control method. A power adapter in the battery charging apparatus performs data communication with a charging control circuit; when the power adapter determines that overvoltage and/or overcurrent occurs in the direct current output by a communication interface of the power adapter, the power adapter notifies the charging control circuit to drive a controller in the electronic device to switch off a communication interface of the electronic device and switches off the direct current output automatically; when the charging control circuit; determines that overvoltage and/or overcurrent occurs upon receiving output voltage and output current of the power adapter, the charging control circuit notifies the power adapter to switch off the direct current output and drives the controller in the electronic device to switch off the communication interface of the electronic device.

Adaptive charger with input current limitation and controlling method for the same

An adaptive charger can include: a power converter configured to receive an input current from an external power supply, and to generate an output current as a charging current to a load; a current feedback loop configured to compare a first detection signal that represents the input current against a first current reference signal, and to generate a first error signal, where the power converter is configured to regulate the input current according to the first error signal; and the current feedback loop being configured to determine an overload state of the external power supply according to an input voltage of the power converter, where the charger is configured to enter a current limit state when the external power supply is determined to be in the overload state, and where the first current reference signal is gradually reduced until the external power supply recovers to a non-overloaded state.

Regulator control circuit

A regulator control circuit which is configured to control a switching regulator: a feedback comparator configured to compare a signal representative of a reference voltage with a signal representative of a voltage output of the switching regulator and to output a control signal for controlling the operation of the switching regulator dependent on the signals received by the feedback comparator; and a current feedback controller connected to the feedback comparator and configured to receive a signal representative of a current output by the switching regulator and determine whether the regulator control circuit adopts a first or second mode of operation based on the signal representative of a current output, such that, in the first mode of operation, the control signal is for controlling the switching regulator in accordance with a constant voltage control scheme and, in the second mode of operation, the control signal is for controlling the switching regulator in accordance with a constant ...

Method of remedying lithium plating in a high voltage battery

A method for a vehicle comprises, by a controller, responsive to charge current for a battery exceeding a threshold, inhibiting further charging of the battery. The method further includes, responsive to the vehicle achieving a predefined state following the charge current exceeding the threshold, discharging the battery for a predetermined time at a predetermined current both defined by an amount and duration that the charge current exceeded the threshold to deplate lithium from an anode of the battery.

Battery pack and computer-implement battery pack control method

A battery pack may include a housing, a battery in the housing, a first switch connected to the battery in the housing, a current detector, and a controller. The current detector configured to detect a current flowing to the battery, the current detector being in the housing. The controller configured to control the first switch to switch to a conductive state to flow the current to the battery if the current flowing to the battery detected by the current detector is higher than a first threshold value, and control the first switch to switch to a shut-off state to interrupt the current to the battery if the current flowing to the battery detected by the current detector is equal to or less than the first threshold value, the controller being in the housing.

Battery energy storage system with arc flash protection, energy conversion system and protection method

A battery energy storage system is disclosed, the battery energy storage system comprising a rechargeable battery assembly for storing and providing energy and a protection system including an arc flash protection device to protect against risks due to arc flashes. The arc flash protection device comprises an overcurrent protection unit which detects overcurrent conditions indicating arc flash conditions in case of a low impedance of the battery assembly and an undervoltage protection unit which detects undervoltage conditions indicating arc flash conditions in case of a low impedance of the battery assembly, wherein upon detecting the overcurrent conditions and/or the undervoltage conditions for a predetermined minimum time period, the arc flash protection device initiates protective measures to prevent further operation of the battery assembly. An energy conversion system comprising such a battery energy storage system, which can be used for stationary and mobile energy supply or distribution ...

Verfahren,Vorrichtung und Ladegeraet zum schnellen Laden von dichten Akkumulatoren und hierzu verwendete Akkumulatorenbatterie

VERFAHREN UND VORRICHTUNG ZUR ANZEIGE DER BILDUNG VON GAS MITTELS ELEKTRODEN

Battery Charger and Battery Charging Method

Charging is started with charge voltage set to a first voltage value (lower than a normal charge voltage) by a charge voltage change means, the first voltage value being predetermined to ensure that secondary batteries constituting a parallel-arrangement battery pack are charged up to and maintained at a predetermined SOC lower than full charge (between 80 and 90% of full charge). When a charge current detection means detects that charge current has decreased to a predetermined value A 1, the charge voltage is set to a second voltage value (normal charge voltage) higher than the first voltage value by the charge voltage change means, the second voltage value being predetermined to enable the secondary batteries to be charged up to full charge. When a battery SOC detection means detects that at least one of the secondary batteries has reached full charge, charging is terminated.

Systems and Methods for Charging Super Capacitors

Systems and methods are provided for charging a super capacitor bank. One method provides for determining a charge voltage for the super capacitor bank, providing a charging current, limiting the charging current according to a corresponding worst case temperature within the super capacitor bank operating temperature range, limiting the charge voltage according to the worst case temperature, and turning off the charging current once the super capacitor bank is charged. One system provides a super capacitor bank for storing energy providing specified power demand to a circuit, a current charger providing charging current to the super capacitor bank, the charging current limited in accordance with a corresponding worst case temperature within the super capacitor bank operating temperature range, a voltage sense circuit to detect the super capacitor bank voltage, and a control to disconnect the current charger from the super capacitor bank once the super capacitor bank is charged.

Method and Apparatus for Charging a Battery

A method of testing a battery is provided the method may include: (a) applying a heavy load to the battery, (b) measuring the voltage V 1 between the positive and negative terminals of the battery after a first time period under which the battery is subjected to the heavy load; (c) removing the heavy load, (d) waiting for a second length of time, (e) reading the voltage across the positive and negative terminals after the second length of time V 2 , (f) performing a cold cranking amps CCA test if the CCA test indicates a CCA value above a first threshold, then consider V 2 , if V 2 is below the second threshold than skip to step g but if V 2 is above a second threshold than determine if the V 2 is above a third threshold, if V 2 is above a third threshold than determine that the battery is good and skip steps g-h; but if V 2 is below the third threshold then if a battery charge flag has been set, determine that the battery is bad and skip steps g and h, if the battery charge flag has not been set, determine that the battery is good but needs additional charging and skip steps g-h, if the CCA test indicates a CCA valve below the first threshold then move to step g, (g) determine if the battery charge flag has been set, if the battery charge flag has been set, then determine that the battery is bad, if the battery charge flag has not been set then move to step h; and (h) applying a charging current to the battery if the charging current is less than a fourth threshold amount then stop charging the battery and return to step a, if the charging current is greater than the fourth threshold amount, then charge the battery for a third length of time then stop charging the battery and return to step a.

Method and Apparatus for Charging Batteries

A charge system is disclosed. A charge system includes a switching device and a controller. The switching device performs switching of a DC input voltage at a predetermined switching frequency to generate an output voltage, and the output voltage being utilized for charging said battery. The controller allows the switching device to operate at a first switching frequency immediately after starting of charge and at a second switching frequency when a frequency changing condition holds. The second switching frequency is higher than that of first switching frequency.

Electric operating machine

When a main switch ( 12 ) is turned ON, an electric operating machine ( 1 ) is put in the standby mode. With a trigger ( 13 ) being pulled in the standby mode, a power supply circuit ( 16 ) applies a voltage to a drive part ( 30 ). The power supply circuit ( 16 ) adjusts the voltage applied to the drive part ( 30 ) for a voltage corresponding to the pulling rate of the trigger ( 13 ). When the current running toward the drive part ( 30 ) exceeds the rated value of the drive part ( 30 ), the power supply circuit ( 16 ) automatically stops power supply to the drive part ( 30 ). On the other hand, when the output voltage of a battery ( 50 ) drops and the battery ( 50 ) is put in an overdischarge state, power supply to the drive part ( 30 ) is automatically stopped. When it is detected that the battery ( 50 ) undergoes an abnormal event, power supply to the drive part ( 30 ) is automatically stopped.

Equipment system comprising a battery-operated electrical device, a rechargeable battery unit, and a battery charger

An equipment system includes a battery unit ( 10 ) having a monitoring circuit ( 14 ), which detects at least one operating parameter of the battery unit ( 10 ) and furnishes a control signal, dependent on the operating parameter, for switching means ( 25, 31 ). The switching means control the charging and discharging process of the battery unit ( 10 ) and are located in the electrical device ( 20 ) and in the charger ( 30 ), respectively. From the battery unit ( 10 ), the control signal is transmitted to the switching means ( 25, 31 ) in the electrical device ( 20 ) and in the charger ( 30 ), respectively. By this provision of shifting the switching means ( 25, 31 ) out of the battery unit ( 10 ) into the electrical device ( 20 ) and into the charger ( 30 ), respectively, the heat development in the battery unit ( 10 ) and also its structure size are reduced.

Secondary-battery control apparatus

In an apparatus for controlling a secondary battery comprised of a plurality of cells connected in series, the apparatus includes a monitor configured to monitor an output voltage of each of the plurality of cells, and determine whether the output voltage of one of the plurality of cells reaches a preset full charge voltage. The apparatus includes a voltage equalizer configured to, when it is determined that the output voltage of one of the plurality of cells reaches the preset full charge voltage, perform a voltage equalizing task to match, with an output voltage of one specified cell in all the cells, the voltages of the remaining cells except for the one specified cell to equalize the output voltages of all the plurality of cells. The output voltage of the specified one cell is the lowest in the output voltages of all the cells.

Charging circuit and charging method thereof

A charging circuit includes a main control microchip, a charging integrated circuit, and a current control circuit. The main control microchip includes a power-on pin connected to a charging device. The charging integrated circuit comprises a power input pin and a current limit pin, wherein the power input pin is connected to the charging device, and the charging integrated circuit is capable of limiting current. The current control circuit comprises a transistor, a first current limiting resistor and a second current limiting resistor, a base of the transistor is connected to the main control microchip, the first current limiting resistor is connected between the current limit pin and ground, and the second current limiting resistor is connected between the current limit pin and a collector of the transistor, the main control microchip is operable to output control signals to enable or disable the transistor.

Single Wire Battery Pack Temperature and Identification Method

Disclosed are techniques for identifying battery pack types and by inference battery chemistries by measuring a transient response of the battery pack to signal applied to the battery pack.

Charging apparatus

A charging apparatus capable of charging a battery device includes a communication terminal configured to receive a signal for controlling charging of the battery device from the battery device, a detection unit configured to detect a voltage level of an input signal which is input in the charging apparatus via the communication terminal, a signal switching unit configured to connect between the communication terminal and the detection unit and change the voltage level of the input signal, and a charging control unit configured to control charging of the battery device based on the voltage level of the input signal changed by controlling the signal switching unit.

Battery management device and portable computer

The present invention provides a battery management device and a portable computer, the battery management device is for managing the rechargeable battery provided in a portable computer, the portable computer is provided with a charge circuit for charging a battery, the battery management device comprises: a discharge circuit for discharge the battery; a acquiring module for acquire the mode determining parameter; a first determining module for judging whether the battery storage mode is entered according to the mode determining parameter; a first control module for controlling the charge circuit or the discharge circuit to control the amount of electrical charge of the battery so that the amount of electrical charge of the battery is lower than the second amount of electrical charge threshold in the battery storage mode; the performance of the battery when deposited with the amount of electrical charge lower than the second amount of electrical charge threshold is better than the performance when deposited with the amount of electrical charge higher than the second amount of electrical charge threshold. The present invention alleviates the attenuation of the amount of electrical charge capacity of the rechargeable battery of the portable computer.

Inductively rechargeable implantable device with reduced eddy currents

A case for an implantable medical device includes a metal case portion, having an inside and an outside, configured to attach to at least one other case portion to define a biocompatible case for the implantable medical device. The metal case portion has a plurality of grooves disposed on at least one of the inside and the outside, the grooves being oriented substantially perpendicular to an expected direction of eddy currents produced by an inductive recharging coil in proximity thereto.

Charging circuit with universal serial bus port

A charging circuit includes a switch, a standby power supply, a first power supply, a second power supply, a universal serial bus (USB) port, and a power supply switching module with a first to a fourth terminals. According to the power states of a computer, the power supply switching module allows either a first power supply or a second standby power supply to provide a charging voltage for the USB port through controlling the switch.

Contactless charging system

A contactless charging system comprises a charger, a vehicle and a controller. The charger comprises a power supply for providing a first electric power; a first transmitter electrically connected to the power supply and transforming the first electric power into a first electromagnetic energy; and a second transmitter electrically connected to the power supply and transforming the first electric power into a second electromagnetic energy. The vehicle comprises a receiver placed nearby the first transmitter and the second transmitter, for contactlessly receiving the first electromagnetic energy or the second electromagnetic energy, and transforming the first electromagnetic energy or the second electromagnetic energy into a second electric power; and a battery assembled in the vehicle and electrically connected to the receiver for storing the second electric power. The controller selectively enables the first transmitter or the second transmitter according to the charging efficiency.

Electricity supply system for vehicles

The invention relates to an electricity supply system for vehicles, which has a connector device that includes an electronic board provided with a data microprocessor; a plurality of connector plugs arranged in parallel and connected to one another to couple to a plurality of removable rechargeable batteries; a connection to the electronic board provided with a continuous current BUS to couple to the electrical system of the engine of the corresponding vehicle; and a discriminator such that the electronic board is able to identify the electrical supply from any of the plurality of removable batteries, such that when the rechargeable batteries are discharged or low they can be recharged from an external electricity source such as the general electricity grid.

Charge control scheme for use in power tools

A simplified control scheme is presented for use in a power tool. The power tool may be comprised of two or more lithium-ion battery cells connected in series and operable to drive the motor in the tool. A charging circuit is configured to receive a charging current from an AC adapter and to supply the charging current to the battery cells. A microcontroller monitors the voltage of the battery cells and terminates charging of the battery cells in accordance with the monitored voltages of the battery cells. The microcontroller does not receive power from the battery cells but is only powered by the AC adapter. Of note, each of the battery cells preferably employs an electrolyte composition comprised of a redox shuttle material. In combination with other tool components, the use of the redox shuttle material reduces or eliminates the need for expensive charge and discharge controls, thereby reducing the cost of the tool.

Multi-Purpose Power Management Apparatus, Power Path Control Circuit and Control Method Therefor

The present invention discloses a multi-purpose power management apparatus, a power path control circuit, and a control method therefor. The multi-purpose power management apparatus controls power conversion between an input power and an output power and charging operation from the output power to a battery. The multi-purpose power management apparatus includes: a switch circuit including at least one power transistor; a switch control circuit generating a PWM signal to control the power transistor, for controlling the power conversion between the input power and the output power; a charging management circuit for controlling the charging operation from the output power to the battery; and a path selection circuit for determining whether the charging operation is controlled by the charging management circuit.

Battery pack for electric power tool, control circuit, and program

A battery pack for electric power tool is provided with a battery and a control circuit. The circuit includes a condition satisfaction determination unit, a continua lion satisfaction determination unit, and a sleep-mode transition unit. The condition satisfaction determination unit determines whether each of at least one predetermined sleep-mode transition condition is satisfied, and determines whether an all-condition satisfaction state is present, which is a state wherein all of the at least one sleep-mode transition condition are satisfied. The continuation satisfaction determination unit determines whether the all-condition satisfaction state has continued for a predetermined. period of time when the condition satisfaction determination unit determines that the all-condition satisfaction state is present, The transition unit stops part of operation of the circuit to shift the circuit to a sleep mode when the continuation satisfaction determination. unit determines that the all-condition satisfaction state has continued for the predetermined period of time.

Power Tool with Light Unit

A power tool including a motor, light unit, and switch unit for selectively connecting the motor and light unit to a power source. A control module includes a controller coupled to a first electronic switch to control power delivery to the motor based on a position of the switch unit, and to a second electronic switch to control power delivery to the light source based on a position of the switch unit. A timer is configured to keep the light unit illuminated for a predetermined amount of time after the switch unit has been activated or deactivated. The control module also includes a boot circuit with a semiconductor switch that continues to deliver power to the controller and to the light unit when the switch unit is deactivated subsequent to being activated, to enable the light unit to remain illuminated after the switch unit has been deactivated.

Power supply device

Provided is a power supply device integrally combined with an electrical device body including a motor, comprising a rechargeable battery for supplying power to the motor, a microcomputer for detecting a residual capacity and a battery voltage of the battery, and a switching element provided between the battery and the microcomputer. The microcomputer stops charging the battery when the detected residual capacity has become 100%, and when the detected value of the battery voltage has become lower than a peak value after the value of the battery voltage passes the peak value, making it possible to prevent overcharging of the battery. The microcomputer also controls to turn off the switching element to stop the power supply from the battery to the microcomputer when the residual capacity becomes less than a predetermined threshold value, making it possible to reduce power consumption.

Battery charge control system and method

The present invention is a control system for charging a lead-acid battery based on the knowledge of the state of charge of the battery to provide a more consistent percent return target across the range of discharge levels and life of the battery.

Charging control system

A charging control system is configured to calculate an internal resistance line indicating a relation between a value of a charging current and a value of a voltage of a battery, which voltage occurs when the charging current has flown into the battery, to obtain a maximum inputtable value point S MAX corresponding to a maximum inputtable power/current and a currently-inputted value point S INP corresponding to a charging power/current currently inputted to the battery, these points existing on the calculated internal resistance line. The charging control system is also configured to calculate a point located between the maximum inputtable value point S MAX and the currently-inputted value point S INP , as a target point S TRG corresponding to a target charging power/current point, and to set, based on the calculated target point S TRG , a charging power/current for charging the battery.

Power management for electric vehicles

An apparatus for managing power in an electric vehicle includes a control circuit and a first switch. The control circuit is configured to generate a first control signal based on a current of a battery operable for powering the electric vehicle, and to generate a second control signal based on a voltage of the battery. The first switch is configured to control connection of the battery to a power source and a load in the electric vehicle according to the first control signal. The first control signal controls a voltage at a terminal of the first switch to maintain the current of the battery to be substantially equal to a current setting, and the second control signal controls the battery to switch between a first state and a second state.

Secondary battery pack connection control method, power storage system, and secondary battery pack

A power storage system has a plurality of secondary battery packs and a host device. The secondary battery packs each have: secondary batteries; a charge switch means that turns a charging path to the secondary batteries ON and OFF; a discharge switch means that turns a discharging path from the secondary battery ON and OFF; and a current-limiting means that causes the secondary battery to discharge while limiting the current to, or below, a fixed value. When switching from the secondary battery pack connected to the input/output terminals of the system to a first secondary battery pack in which voltage is higher than in the second secondary battery pack, the host device causes the charge switch means of the second secondary battery pack to turn OFF the charging path while in a state in which the current limiting means of the first secondary battery pack will cause a discharge operation to begin while limiting the flow of current.

Electric vehicle and charging control method for auxiliary battery thereof

The present invention relates to an electric vehicle and a charging control method for an auxiliary battery of the electric vehicle. According to the present invention, the electric vehicle comprises: a high-voltage battery which drives the electric vehicle; a plurality of electric field loads; the auxiliary battery which supplies driving power to the plurality of electric field loads; a first voltage detection unit which detects an output voltage of an auxiliary battery side; a converter which performs a PWM switching to convert the voltage of the high-voltage battery into a voltage required in the electric field loads; a plurality of relays; a power relay assembly (PRA) which is switched to supply the energy of the high-voltage battery to the converter according to whether or not the plurality of relays are in operation; and a vehicle control module (VCM) which controls the driving of the power relay assembly, wherein the converter includes a converter control unit, which sends a driving instruction signal requesting the vehicle control module to drive the power relay assembly depending on a magnitude change of the output voltage of the auxiliary battery side. Accordingly, discharging of the auxiliary battery in a starting-off state is prevented, which makes it possible to stably operate the electric vehicle system.

Electric charging system and electric charger

There is provided an electric charging system in which an electric charger and an electric vehicle are connected by a charging cable. The electric charger calculates a voltage drop amount in the charging cable on the basis of a supplied current at the electric charger side and an electric resistance of the charging cable. The electric charger also compares a determination voltage with a supplied voltage at the electric charger side and determines that a battery has been charged to a fully charged state when the supplied voltage reaches the determination voltage. The determination voltage used for such full charge determination is updated by adding the voltage drop amount to a basic determination voltage that is set in advance.

Adapter circuitry for enabling charging and/or recharging a device or battery of a different type

An electronic adapter circuit for charging and/or recharging a battery of a first battery type utilizing a charging device for a battery of a second different battery type, may comprise: an electronic circuit for controlling the charging of the battery of the first battery type when the battery of the first type is charged by the battery charging device, wherein the electronic circuit has high conductivity when the battery of the first type provides electrical power to a load, and has a reduced conductivity for limiting charging of the battery of the first type when it is charged by the battery charging device. The electronic circuit may include a controllable conductivity device having high conductivity when the battery of the first type provides power to a load, and a battery charging control circuit for reducing the conductivity of the controllable conductivity device for limiting the charging of the battery.

Battery pack, method for charging/discharging same, and power consumption device

Provided is a method for charging/discharging a battery pack having an auxiliary charging/discharging device and a battery assembly in which a plurality of secondary battery cell parallel modules, each of which includes a plurality of fasecondary battery cells connected in parallel, are connected in series, the method including, when there is no abnormality in the secondary battery cells during charging/discharging, connecting the auxiliary charging/discharging device in parallel to any of the secondary battery cell parallel modules, and when there is an abnormality in any of the secondary battery cells during charging/discharging, releasing connection to the secondary battery cell at which the abnormality has arisen in the secondary battery cell parallel module including the secondary battery cell at which the abnormality has arisen, and connecting the auxiliary charging/discharging device in parallel to the secondary battery cell parallel module including the secondary battery cell at which the abnormality has arisen.

Battery system, controlling method of the same, and power storage system including the battery pack

A battery system, a method of controlling the battery system, and an energy storage system including the battery system are disclosed. The method of controlling the battery system includes steps of selecting one of the plurality of batteries by using a multiplexer; measuring a voltage of the selected battery; and calculating a charging capacity of the battery based on the measured voltage. Accordingly, cell balancing may be efficiently performed.

Charging device and charging method

A charging device including a charging circuit, a voltage detection circuit, and a keyboard controller is provided. The charging circuit receives a charging power source, and produces a battery-charging power source at a first node by the charging power source to charge a battery. The voltage detection circuit detects a voltage at the first node, and produces a voltage detection result. The keyboard controller determines whether the voltage at the first node is less than a predetermined voltage according to the voltage detection result, and determines whether a predetermined condition has been satisfied, wherein the predetermined condition includes the voltage at the first node being less than the predetermined voltage, and the keyboard controller is arranged to force the charging circuit to stop producing the battery-charging power source at the first node when the predetermined condition has been satisfied.

Battery charging device and method

A battery charger, including: a sensor for monitoring a degree of deterioration of a secondary battery; a current driver for applying a current to the secondary battery; and a controller for controlling the current applied to the secondary battery from the current driver, receiving the degree of deterioration of the secondary battery from the sensor, and determining whether to change or maintain the current applied to the secondary battery according to the degree of deterioration of the secondary battery.

Speaker device providing backup power

A speaker device providing backup power includes a main body, at least one speaker unit and at least two power-storing units. The main body includes a charging port for electrically connecting to an external power source, an audio port for connecting to a portable electronic device, a discharging port for electrically connecting to the portable electronic device, and a control circuit unit for connecting to the charging port, audio port and discharging port. The speaker unit is electrically connected to the control circuit unit to obtain audio signal via the audio port. The two power-storing units store power from the external power source, and include a first power-storing unit for driving the speaker unit and a second power-storing unit for electrically connecting to the discharging port to allow charging power stored in the second power-storing unit to charge into the portable electronic device connected to the discharging port.

Wireless energy transfer using variable size resonators and system monitoring

A variable shape magnetic resonator includes an array of at least two resonators each being of a substantially different shapes and at least one power and control circuit configured to selectively connect to and energize at least one of the resonators.

Power Converter Circuit

A power converter circuit includes input terminals configured to receive an input voltage and an input current and output terminals configured to provide an output voltage and an output current. A boost converter stage is coupled between the input terminals and the output terminals. The power converter circuit is operable to operate in one of a first operation mode, a second operation mode, and a third operation mode dependent on the output voltage. The first, second and third operation modes are mutually different. In each of the first, second and third operation modes, the input current is controlled dependent on the input voltage.

Switching device

In the present invention, a main switch circuit ( 13 ) is provided between an electric power line (PL), to which voltage outputted from a solar cell ( 11 ) is applied, and a battery module ( 12 ). A protection circuit ( 19 ) turns OFF the main switch circuit ( 13 ) to protect the battery module ( 12 ) from overcharging when the voltage (VBAT) of the battery module ( 12 ) is equal to or greater than an upper limit voltage. The voltage outputted from the solar cell ( 11 ) is set so as to be greater than the upper limit voltage to allow the battery module ( 12 ) to be charged to the upper limit voltage. When a charge ON command signal has been received, a control unit ( 18 ) turns ON only a sub-switch circuit ( 14 ) to introduce current from the solar cell ( 11 ) into a parallel circuit ( 15 ) and to suppress the voltage (VPL) of the power line (PL) to less than the upper limit voltage before turning ON the main switch circuit ( 13 ).

Flash charging protection circuit and control method thereof

A flash charging protection circuit and a control method thereof adapted to a charging circuit coupled to a power supply are provided. An analog-to-digital converter receives a feedback voltage output from the charging circuit and an input voltage output from the power supply. A power voltage detection module detects whether the input voltage is abnormal or not. A charging state detection module detects whether a rising curve of the feedback voltage is abnormal or not. If a controller receives a power abnormal signal or a charging state abnormal signal, the controller disables a pulse width modulation signal generator to produce a pulse width modulation signal.

Maximized battery capacity charge based on equilibrium charging

The present disclosure provides for repeatedly charging a rechargeable battery during a single charging session to a steady state voltage to attain a higher charge capacity of the rechargeable battery than a charge capacity of the rechargeable battery existing prior to the rechargeable battery being charged to the steady state voltage. The higher charge capacity is attained without exceeding a maximum allowable charge threshold of the rechargeable battery.

Charging control device and charging control system

When a communication control unit ( 14 ) in this charging control device ( 1 ) receives an inhibition command sent by a power monitoring device ( 2 ), the communication control unit instructs a signal processing unit ( 10 ) to lower a current capacity (an upper limit for a charging current). The signal processing unit ( 10 ) reduces the duty ratio of a pilot signal. As a result, the charging power supplied to an electric vehicle ( 200 ) decreases, thus making it possible to prevent the supplied power from exceeding a contract demand and minimize problems stemming from the charging of a rechargeable battery.

Bidirectional wireless charging/discharging device for portable electronic device

A bidirectional wireless charging/discharging device for the portable electronic device includes a logic control unit, a boost/buck unit, first and second reverse current suppressors, a control switch, and a receipt/transmission mode selection unit. The logic control unit includes an automatic mode selection resetting module. The reverse current suppressor provide function of reverse current prevention and switching. The boost/buck unit controls stepping up/down of voltage in a charging operation. The logic control unit detects if a load exists and controls the operations of the boost/buck unit and the reverse current suppressor and is used in combination with the control switch to control the performance of charging or discharging and is further used in combination with the receipt or transmission mode selection unit to select a desired mode of operation. The receipt/transmission mode selection unit is electrically connected to automatic mode selection resetting module.

APPARATUS AND METHOD FOR CONTROLLING STEP CHARGING OF SECONDARY BATTERY

Disclosed is an apparatus and method for controlling step charging of a secondary battery. A charging control unit determines a SOC, an OCV and a polarization voltage of the secondary battery, determines an OCV deviation corresponding to a difference between the OCV and a predefined minimum OCV value, determines a correction factor corresponding to the polarization voltage and the OCV deviation, determines a look-up SOC by correcting the SOC according to the correction factor, determines the magnitude of a charging current corresponding to the look-up SOC, and provides the determined charging current to a charging device. 1. An apparatus for controlling step charging of a secondary battery , comprising:a voltage measuring unit including a voltage sensor, a current measuring unit including a current sensor, and a temperature measuring unit including a temperature sensor configured to respectively measure a voltage, a current and a temperature of the secondary battery; anda charging control unit including a processor and operably coupled to the voltage measuring unit, the current measuring unit and the temperature measuring unit, a control logic to estimate a state of charge (SOC) and an open circuit voltage (OCV) of the secondary battery based on the measured voltage value, the measured current value, and the measured temperature value before the start of charging of the secondary battery;', 'a control logic to determine a polarization voltage of the secondary battery from an internal resistance of the secondary battery, the measured current value, and the estimated OCV;', 'a control logic to determine an OCV deviation corresponding to a difference between the estimated OCV and a predefined minimum OCV value;', 'a control logic to determine a correction factor corresponding to the determined polarization voltage and the determined OCV deviation with reference to a predefined correlation between the polarization voltage and the correction factor and between the OCV ...

APPARATUS AND METHOD FOR CONTROLLING CHARGING OF SECONDARY BATTERY PACK

A charging control apparatus measures a first temperature of a first secondary battery selected from the plurality of secondary batteries, a second temperature of a coolant flowing into the cooling device, a charging current of the secondary battery pack, a first terminal voltage of the first secondary battery and a second terminal voltage of a second secondary battery closest to the cooling device, estimates a temperature of a temperature estimation point of the second secondary battery from a lumped thermal model having a thermal resistance between two points selected from the temperature estimation point of the second secondary battery, the first temperature measurement point and the second temperature measurement point, and measurement data about temperature, current and voltage, and determines the estimated temperature as a minimum temperature of the secondary battery pack, and varies a charging power provided to the secondary battery pack according to the minimum temperature. 1. An apparatus for controlling charging of a secondary battery pack that includes a plurality of secondary batteries and is coupled to a cooling device , the apparatus comprising:a cell temperature measuring unit configured to measure a first temperature of a first secondary battery selected from the plurality of secondary batteries;a coolant temperature measuring unit configured to measure a second temperature of a coolant flowing into the cooling device;a current measuring unit configured to measure a charging current of the secondary battery pack;a voltage measuring unit configured to measure a first terminal voltage of the first secondary battery and a second terminal voltage of a second secondary battery closest to the cooling device; estimate a third temperature of a temperature estimation point of the second secondary battery from a lumped thermal model having a thermal resistance between two points selected from the temperature estimation point of the second secondary battery, a ...

State of Charge Information for a Wireless Power Transmitting Device

A wireless power system may include power transmitting devices, power receiving devices, and power transmitting and receiving devices. During a configuration phase (e.g., when placed adjacent to another device), a battery-powered transmitting device may transmit information to the additional device that identifies a presence of the battery in the transmitting device. The battery-powered transmitting device may periodically report its state of charge to a power receiving device using in-band communication. The battery-powered transmitting device may report its state of charge before a power transfer phase (e.g., in the configuration phase) or during the power transfer phase. The battery-powered transmitting device may report its state of charge to the power receiving device in response to a state of charge query from the power receiving device. The power receiving device may display the state of charge of the battery of the power transmitting device. 1. An electronic device operable in a wireless charging system with an additional electronic device , the electronic device comprising:a battery having a state of charge;wireless power transmitting circuitry having a coil configured to transmit wireless power signals; and using the coil, transmit information to the additional electronic device that identifies a presence of the battery in the electronic device;', 'using the coil, receive a state of charge query from the additional electronic device; and', 'responsive to receiving the state of charge query from the additional electronic device, transmit the state of charge of the battery to the additional electronic device using the coil., 'control circuitry configured to2. The electronic device of claim 1 , wherein receiving the state of charge query from the additional electronic device comprises receiving the state of charge query from the additional electronic device while transmitting claim 1 , using the coil claim 1 , the wireless power signals to a wireless charging ...

POWER SUPPLY DEVICE, ELECRONIC DEVICE AND POWER SUPPLY METHOD

A power supply device, an electronic apparatus, and a power supply method are provided. The power supply device comprises a first buck circuit used to convert, if a single battery cell in N cells connected in series has a voltage lower than a shutdown voltage of an electronic apparatus, a total voltage of the N cells into a power supply voltage of the electronic apparatus, such that the power supply voltage is higher than or equal to the shutdown voltage, N being an integer greater than or equal to 2; and a first power supply channel used to supply power to a system of the electronic apparatus according to the power supply voltage. 1. A power supply device comprising:a first step-down circuit configured to convert, in response to a voltage of a single battery cell among N battery cells connected in series is lower than a shutdown voltage of an electronic device, a total voltage of the N battery cells into a power supply voltage of the electronic device, so that the power supply voltage becomes higher than or equal to the shutdown voltage, wherein N is an integer greater than or equal to 2; anda first power supply channel, configured to supply power to a system of the electronic device at the power supply voltage.2. The power supply device of claim 1 , further comprising:a second step-down circuit configured to perform conversion on the total voltage of the N battery cells, in response to the voltage of a single cell among the N battery cells is higher than or equal to the shutdown voltage of the electronic device, wherein the second step-down circuit has a step-down proportion of 1/N; anda second power supply channel configured to supply power to the system of the electronic device at the voltage converted by the second step-down circuit.3. The power supply device of claim 2 , further comprising:a control circuit configured to switch between the first power supply channel and the second power supply channel.4. The power supply device of claim 1 , further comprising: ...

Apparatus for mining battery characteristic data having sensitivity to volume fraction of active material of battery electrode and method thereof

Disclosed is an apparatus and method for mining battery characteristic data, which calculates a particle surface concentration (c se,i ) of lithium from a first state space model derived from a Pade approximation equation of a transcendental transfer function, calculates a change ratio ⁢ ∂ c se , i ∂ ? ⁢ ( t ) ? ⁢ indicates text missing or illegible when filed of the particle surface concentration to the change in the active material volume fraction from a second state space model derived by the partial derivative of the Pade approximation equation, calculates a change ratio ⁢ ∂ η i ⁡ ( t ) ∂ ɛ ⁢ ? ? ⁢ indicates text missing or illegible when filed of over-potential to the change in the active material volume fraction from the Butler-Vollmer equation, calculates a potential slope ∂ U i ∂ c se , i corresponding to the particle surface concentration by using an open circuit potential function, and stores voltage-current data in which the sensitivity of the battery voltage to the active material volume fraction of the electrode calculated from ∂ U i ∂ c se , i , ∂ c se , i ∂ ɛ s , i ⁢ ( t ) ⁢ ⁢ and ⁢ ⁢ ∂ η i ⁡ ( t ) ∂ ɛ s , i is greater than or equal to a threshold as mined characteristic data.

Method of cycling a lithium-sulphur cell

A method for cycling a lithium-sulphur cell, said method comprising discharging a lithium-sulphur cell, terminating the discharge when the voltage of the cell reaches a threshold discharge voltage that is in the range of 1.5 to 2.1 V, charging the lithium-sulphur cell, and terminating the charge when the voltage of the cell reaches a threshold charge voltage that is in the range of 2.3 to 2.4V, wherein the lithium-sulphur cell is not fully charged at the threshold charge voltage, and wherein the lithium-sulphur cell is not fully discharged at the threshold discharge voltage.

Portable Lithium-Titanate Battery and Charger

An electronic circuit that very rapidly charges an internal lithium-titanate battery that can then be used to power an external low-power electronic device and/or charge the external electronic device's internal battery.

Source bootstrap power conversion for the safe and efficient interconnection of homogeneous or heterogeneous energy storage modules

The present disclosure comprises devices and methods used to regulate the power, voltage and/or current out of an individual energy storage module. A plurality of energy storage modules and/or individual interconnected energy storage modules can form an energy storage system when interconnected in series, parallel or series/parallel. The present disclosure also provides a method for storing and delivering energy, comprising providing an energy storage module for boosting the voltage of the energy storage component while delivering power to a load.

CHARGING METHOD AND CHARGER

A charging method includes obtaining a working state of a present power adapter connected to a charger through a physical interface, in response to the working state of the present power adapter being an overcurrent protection state, continuing to supply power to a charging control circuit of the charger through a backup power of the charger, and reducing, via the charging control circuit, a present current output by the charger until the working state of the present power adapter returns to normal. 1. A charging method comprising:obtaining a working state of a present power adapter connected to a charger through a physical interface;in response to the working state of the present power adapter being an overcurrent protection state, continuing to supply power to a charging control circuit of the charger through a backup power of the charger; andreducing, via the charging control circuit, a present current output by the charger until the working state of the present power adapter returns to normal.2. The method of claim 1 , wherein obtaining the working state of the present power adapter includes:obtaining an output voltage output by the present power adapter to the charger; anddetermining the working state of the present power adapter according to the output voltage.3. The method of claim 2 , wherein determining the working state of the present power adapter according to the output voltage includes:in response to the output voltage being reduced to zero, determining that the present power adapter is in the overcurrent protection state.4. The method of claim 1 , wherein obtaining the working state of the present power adapter includes:obtaining a signal transmitted by the present power adapter, the signal including working state information of the present power adapter.5. The method of claim 1 , further comprising:obtaining a rated charging current of the battery; andsetting the rated charging current of the battery as an initial charging current of the battery.6. ...

DC-DC Conversion for Multi-Cell Batteries

A power supply has a multi-level DC-DC converter and a battery pack with two or more cells provided in series. The switching DC-DC converter provides a regulated voltage at an output. The converter has an energy storage element. The switching regulator is designed to selectively operate in two or more different modes. It switches between a first mode where one cell is connected (between battery and inductor of the converter), and the converter functions like a single cell buck converter and a second mode where two cells are connected in series and the converter functions like a two series cell buck converter. In general, any number of cells and modes can be provided, with successive cells being connected in series in each mode.

SYSTEMS, METHODS, AND DEVICES FOR INCREASED CHARGING SPEED OF LITHIUM-BASED BATTERY PACKS

Battery pack chargers described herein for charging a battery pack include a battery pack receiving portion, a power control module, and a controller. The battery pack receiving portion receives and interfaces with the battery pack. The battery pack includes one or more battery cells. The power control module is configured to provide power to the battery pack receiving portion. The controller is connected to the power control module. The controller is configured to provide a charging current to one or more battery cells of the battery pack using a stepped charging profile. The step charging profile includes a first charging current level. The first charging current level is greater than a predetermined maximum charging current for the battery pack. The controller steps down the charging current to a second charging current level when a voltage of the one or more battery cells increases to a predetermined voltage value. 1. A method for charging a battery pack , the method comprising:connecting the battery pack to a battery pack charger;providing a charging current to one or more battery cells of the battery pack using a stepped charging profile, the step charging profile including a first charging current level, the first charging current level being greater than a predetermined maximum charging current for the battery pack;stepping down the charging current to a second charging current level when a voltage of the one or more battery cells increases to a predetermined voltage value.2. The method of claim 1 , wherein the second charging current level is greater than the predetermined maximum charging current.3. The method of claim 2 , further comprising:stepping down the charging current to a third charging current level,wherein the third charging current level is less than the predetermined maximum charging current.4. The method of claim 3 , wherein a charging time of the one or more battery cells is less than 1500 seconds.5. The method of claim 3 , wherein the ...

Apparatus and method for alleviating voltage drop of battery cell

An apparatus for alleviating a voltage drop of a battery cell includes a battery having a plurality of battery cells, a sensor configured to sense the battery to generate sensing information, a calculator configured to calculate an allowable torque of a motor using the sensing information and calculate an expected voltage of the battery using the allowable torque and the sensing information, and a determinator configured to control a torque quantity of the motor using the expected voltage and a reference voltage.

METHOD AND APPARATUS OF CONTROLLING BIDIRECTIONAL ON-BOARD CHARGER FOR ELECTRIC VEHICLES

A bidirectional on-board charger (BOBC) may be disposed between an electric vehicle supply equipment (EVSE) and a battery equipped in an electric vehicle to convert power while performing charging/discharging in two-way direction, supply a converted DC power to the battery to driving the electric vehicle, convert a power of the battery into an AC power in converting power with respect to the EVSE, and supply the AC power to a grid or a load. In a method and apparatus of controlling a BOBC, an operation mode of the BOBC proceeds to an optimum point by comparing battery voltage values in a charging mode and proceeds to an optimum point on the basis of an accurate battery state value through a grid connection in a discharging mode. 1. A method of controlling a bidirectional on-board charger (BOBC) which is included in an electric vehicle and performs a charging mode and a discharging mode , the method comprising:monitoring and obtaining a voltage supplied from a battery and voltages of two or more objects of the electric vehicle;when two values match each other by voting the monitored voltage values, calculating an average value of the two voltage values and checking a voltage for optimum point control in the BOBC on the basis of the average value;comparing the calculated average value with a command value of a battery management system (BMS) of the electric vehicle; andadjusting a voltage variation rate of the BOBC on the basis of a low value among the command value and a charging voltage value.2. A method of controlling a bidirectional on-board charger (BOBC) which is included in an electric vehicle and performs a charging mode and a discharging mode , the method comprising:monitoring and obtaining a voltage supplied from a battery and voltages of two or more objects of the electric vehicle;when two values match each other by voting the monitored voltage values, calculating an average value of the two voltage values;comparing a state of charge (SOC) value of a ...

IN-VEHICLE BACKUP POWER SUPPLY CONTROL DEVICE AND IN-VEHICLE BACKUP POWER SUPPLY

Provided is an in-vehicle backup power supply control device or an in-vehicle backup power supply configured to generate a notification indicating the state of a power storage unit to an external device. When a main power supply fails, a control device applies a voltage to a backup target load from a power storage unit. The control device is provided with a charging/discharging unit for charging the power storage unit and discharging the power storage unit, a voltage detection unit for detecting a voltage of the power storage unit, a control unit for controlling the operation of the charging/discharging unit, and a signal interruption unit for interrupting the output of the predetermined signal to a device external to the control device in a case where the voltage value (Vout) of the power storage unit detected by the voltage detection unit is smaller than a predetermined first threshold. 1. An in-vehicle backup power supply control device for performing control , in an in-vehicle power supply system provided with a main power supply and a power storage unit , such that the power storage unit supplies power to a backup target load in a case where the main power supply fails , the in-vehicle backup power supply control device comprising:a charging/discharging unit configured to charge and discharge the power storage unit;a voltage detection unit configured to detect a charging voltage of the power storage unit;a control unit configured to output a predetermined signal to a device external to the control device; anda signal interruption unit configured to interrupt the output of the predetermined signal to the device external to the control device in a case where the charging voltage detected by the voltage detection unit is smaller than a predetermined threshold.2. An in-vehicle backup power supply control device for performing control , in an in-vehicle power supply system provided with a main power supply and a power storage unit , such that the power storage unit ...

Modulated pulse charging

Disclosed is pulse charging of a battery that uses frequency modulation to vary the pulse periods of the charging pulses. Battery measurements can be made to determine the duty cycles of the charging pulses.

METHOD AND CIRCUIT FOR PROVIDING AUXILIARY POWER AND STORAGE DEVICE INCLUDING THE SAME

A method of providing an auxiliary power by an auxiliary power supply. The method may include converting an external power to a plurality of charging voltages; charging a charging circuit with a first charging voltage of the plurality of charging voltages; monitoring a voltage of the charging circuit; when capacitance of the charging circuit is less than a first reference capacitance, charging the charging circuit with a second charging voltage of the plurality of charging voltages, the second charging voltage being higher than the first charging voltage by a first voltage amount; and providing an auxiliary power to outside the auxiliary power supply. The auxiliary power may be generated based on the voltage of the charging circuit. 1. A method of providing an auxiliary power by an auxiliary power supply , the method comprising:converting an external power to a plurality of charging voltages;charging a charging circuit with a first charging voltage of the plurality of charging voltages;monitoring a voltage of the charging circuit;when capacitance of the charging circuit is less than a first reference capacitance, charging the charging circuit with a second charging voltage of the plurality of charging voltages, the second charging voltage higher than the first charging voltage by a first voltage amount; andproviding an auxiliary power to outside the auxiliary power supply,wherein the auxiliary power is generated based on the voltage of the charging circuit.2. The method of claim 1 , wherein when a discharge time taken for the voltage of the charging circuit to decrease from the first charging voltage to a first threshold voltage is shorter than a first reference time interval claim 1 , the charging of the charging circuit with the second charging voltage is performed.3. The method of claim 2 , further comprising:when a discharge time taken for the voltage of the charging circuit to decrease from the second charging voltage to a second threshold voltage is shorter ...

Parallel charging architecture

Methods, devices, apparatuses, and systems may provide integrated combined current sensing for parallel charging architecture. In one embodiment a charger includes a first charging device that includes a switching circuit having a switching output configured to be coupled to a first terminal of an inductive element. The first charging device further includes a charging terminal configured to couple a second terminal of the inductive element to a battery terminal to provide a first power source to charge a battery coupled to the battery terminal. The first charging device further includes a charge current sense element coupled between the charging terminal and the second terminal of the inductive element. The charge current sense element is configured to sense a charge current at the charging terminal. The circuit further includes a second charging device that includes a second power source coupled to the second terminal such that the charge current comprises current from the first charging device and the second charging device.

Charging Apparatus And Method Of Secondary Battery

A charging apparatus includes a control unit configured to determine an average ion concentration, a surface ion concentration and a solid phase potential for anode particles and an electrolyte potential in an anode, using a predefined electrochemical reduced order model. The control unit is further configured to determine a side reaction rate from the solid phase potential and the electrolyte potential. The control unit is further configured to reduce the magnitude of the charging current applied to a secondary battery based on at least one of a cutoff voltage, the surface ion concentration and the side reaction rate. 1. A charging apparatus of a secondary battery , comprising:a voltage sensor configured to measure a voltage of the secondary battery;a temperature sensor configured to measure a temperature of the secondary battery; anda control unit configured to receive a measured voltage value and a measured temperature value from the voltage sensor and the temperature sensor, respectively, and to adjust a magnitude of a charging current applied to the secondary battery,wherein the control unit is configured to:determine an internal state of the secondary battery, which includes an average ion concentration of anode particles, a surface ion concentration of the anode particles, an anode particle potential and an anode electrolyte potential, using a predefined electrochemical reduced order model (ROM);determine a state of charge (SOC) of the secondary battery from the average ion concentration;determine a side reaction rate from the anode particle potential and the anode electrolyte potential;determine whether at least one charging current control condition is satisfied, wherein the at least one charging current control condition includes at least one of (i) a first condition that the measured voltage value reaches a cutoff voltage, (ii) a second condition that the surface ion concentration of the anode particles reaches an upper limit concentration or (iii) a ...

CHARGING-DISCHARGING DEVICE, CHARGING-DISCHARGING SYSTEM, AND CHARGING-DISCHARGING CONTROL METHOD

A charging-discharging device includes a selection unit to acquire estimated load power data indicating estimation of power to be consumed by an electric load, to acquire estimated solar power-generation power data indicating estimation of power to be generated by a solar power generation system, and to select one of a plurality of specific operations regarding usage of power on the basis of the estimated load power data, the estimated solar power-generation power data, operational mode data indicating an operational mode that identifies a power utilization method, price data indicating a price of AC power to be supplied from a commercial system and a price of AC power to be supplied to the commercial system, power conversion efficiency data indicating power conversion efficiency of a power converter at the time of charging or discharging a storage battery, and current time data. 1. A charging-discharging device comprising:a power converter to convert AC power supplied for charging a storage battery to DC power, and convert DC power discharged from the storage battery to AC power;a first power detector to detect AC power supplied from a commercial system and detect AC power to be supplied to the commercial system;a second power detector to detect AC power supplied from a solar power generation system that generates power using solar light;a third power detector to detect AC power supplied from the power converter and detect AC power to be supplied to the power converter;a fourth power detector to detect AC power to be supplied to an electric load that consumes power;a memory to store therein load power value data indicating a load power value that is a power value detected by the fourth power detector, estimated local solar-radiation data indicating estimation of solar radiation in a local area including a location where the solar power generation system is installed, operational mode data indicating an operational mode that identifies a power utilization method, ...

Procedure for charging a portable device using a battery-operated computer

A method of charging a battery of a device using a battery of a computer powered by the battery, in which the procedure is implemented by a circuit independent of the computer's processors. The method includes supplying a power supply voltage, insufficient to charge a battery, to a computer port, as long as a device is detected as connected to the port, controlling the supply of a charging voltage to the port, while supplying charging voltage to the port, detecting an end of charging condition of a battery of the device, and controlling the cutting off of the charging voltage to the port if the end of charging condition is detected, where this condition is determined according to the intensity of a charging current and according to a quantity of electrical charge supplied to the port and/or of a charging period.

Radio frequency (rf) power harvesting circuit

Aspects disclosed in the detailed description include a wireless charging circuit comprising a radio frequency (RF) power harvesting circuit. In one aspect, the RF power harvesting circuit is configured to harvest a wireless RF charging signal provided by a wireless charging station to generate a direct-current (DC) charging signal to charge a battery, for example, a lithium-ion (Li-ion) battery, in a battery-operated electronic device. In another aspect, a wireless charging controller controls the RF power harvesting circuit to dynamically increase or decrease an effective charging power of the DC charging signal according to a target charging power determined according to a charging profile of the battery. By dynamically adjusting the effective charging power provided to the battery according to the charging profile of the battery, it is possible to provide fast charging to the battery while protecting the battery from overcharging damage.

ELECTRICAL ENERGY STORAGE SYSTEM MODULE LEVEL DIAGNOSTICS

A battery system with battery cell groups arranged in battery modules includes a controller network configured to monitor each module. The network includes multiple cell monitoring units (CMUs); each CMU electrically connected to one battery module and configured to process cell data for the respective battery cell groups. The network also includes multiple voltage sensors on each CMU—each sensor configured to detect voltage across one respective cell group, and multiple microchips—each microchip arranged on one CMU in communication with the respective voltage sensors. Each microchip is programmed with an algorithm configured to receive detected voltage data from the respective sensors at predetermined time intervals over a predetermined timeframe and store the voltage data. The algorithm is additionally configured to determine a discharge rate of each associated cell group using the stored data and determine degradation of each cell group using the determined respective discharge rate. 1. A battery system comprising:a multi-cell rechargeable energy storage system (RESS) having a plurality of battery cell groups arranged in individual battery modules; and a plurality of cell monitoring units (CMUs), each respective one of the CMUs being electrically connected to a respective one of the battery modules and configured to process cell data for the respective battery cell groups;', 'a plurality of voltage sensors mounted to or positioned on each CMU, each voltage sensor being configured to detect voltage across one respective cell group; and', interrogate the respective voltage sensors and retrieve data indicative of the detected voltages for the associated cell groups at predetermined time intervals over a predetermined timeframe;', 'store the retrieved voltage data on the respective microchip;', 'determine a discharge rate of each associated cell group using the stored data; and', 'determine degradation of each associated cell group using the determined respective ...

DOCKING CHARING CIRCUIT AND ELECTRONIC DEVICE

The invention provides a docking charging circuit and an electronic device, including a power supply side module and a receiving side module that can be docked with each other, wherein the power supply side module further includes a power supply side drive unit, a power generating unit, a first switch unit and a first intermediate terminal, and the receiving side module further includes a second intermediate terminal, a first resistance circuit and a second resistance circuit, with the control of the first switch unit by the power supply side drive unit, the first switch unit can be controlled to be turned on when in positive connection to realize power supply, and the first switch unit can be controlled to be turned off when in reverse connection to avoid damage to the devices in the power supply side module and the receiving side module caused by power supply during the reverse connection. 1. A docking charging circuit , comprising a power supply side module and a receiving side module that may be docked with each other , the power supply side module comprising a power source , a voltage output terminal connected to the power source and a first ground terminal , the receiving side module comprising a battery power supply unit and a voltage input terminal connected to the battery power supply unit;wherein the power supply side module further comprises a power supply side drive unit, a power generating unit, a first switch unit and a first intermediate terminal, and the receiving side module further comprises a second intermediate terminal, a second ground terminal, a first resistance circuit and a second resistance circuit;the power generating unit is connected between the first intermediate terminal and the power source, so as to output a target current to the first intermediate terminal under a power supply of the power source; the second intermediate terminal is connected to a first terminal of the first resistance circuit, and a second terminal of the first ...

MAINTAINING OPERATION WITHIN A STABLE REGION OF A POWER CURVE OF A POWER CONVERTER

A power delivery system may include a power converter configured to electrically couple to a power source and further configured to supply electrical energy to one or more loads electrically coupled to an output of the power converter and control circuitry configured to monitor a first voltage derived from the power source, wherein the first voltage is indicative of a total power demanded by the power converter, and control a limit for a current supplied from the power source to the one or more loads based on comparison of the first voltage to a threshold voltage, wherein the threshold voltage is indicative of a point within a range of operation of the power converter at which the power converter delivers a maximum amount of power to the one or more loads. 1. A power delivery system , comprising:a power converter configured to electrically couple to a power source and further configured to supply electrical energy to one or more loads electrically coupled to an output of the power converter; and monitor a first voltage derived from the power source, wherein the first voltage is indicative of a total power demanded by the power converter; and', 'control a limit for a current supplied from the power source to the one or more loads based on comparison of the first voltage to a threshold voltage, wherein the threshold voltage is indicative of a point within a range of operation of the power converter at which the power converter delivers a maximum amount of power to the one or more loads., 'control circuitry configured to2. The power delivery system of claim 1 , wherein the control circuitry is further configured to control the power converter to regulate the first voltage to remain greater in magnitude than the threshold voltage.3. The power delivery system of claim 1 , wherein the threshold voltage is a function of an open circuit voltage of the power source for a given state of charge of the power source.4. The power delivery system of claim 3 , wherein the control ...

ELECTRONIC DEVICE AND CHARGING METHOD THEREOF

The electronic device includes a battery module, a power supply, a power controller, and a processor. The power controller obtains an initial battery capacity of the battery module and a current time when the power supply is connected to an external power supply. The processor sets a preset target battery capacity and a charging completion time, obtains a charging battery capacity according to the preset target battery capacity, the initial battery capacity and a charging time interval, calculates a battery capacity difference according to the charging battery capacity and the charging time interval, converts the battery capacity difference into a charging battery capacity, and transmits it to the power controller. The power controller converts the supplied power to a charging voltage or a charging current correspondingly according to the charging battery capacity, to charge the battery module to the preset target battery capacity at a charging end time. 1. An electronic device , comprising:a battery module;a power supply, configured to provide a supplied power;a power controller, electrically connected between the battery module and the power supply, to obtain an initial battery capacity of the battery module and a current time when the power supply is connected to an external power supply, and to control the power supply to charge the battery module; anda processor, electrically connected to the power controller, the processor is configured to set a preset target battery capacity and a charging completion time, and to obtain a charging battery capacity according to the preset target battery capacity and the initial battery capacity, to obtain a charging time interval according to the charging completion time and the current time, to calculate a battery capacity difference according to the charging battery capacity and the charging time interval, to convert the battery capacity difference into a charging power according to a power conversion equation, and to ...

Power System

A power system provides power from a power source to a load via a distribution bus, and includes a DC-DC converter coupled in parallel with a network of switching elements coupled between an output terminal of the power source and the distribution bus. A controller is configured to selectively activate or deactivate the DC-DC converter and each of the switching elements to enable the power source to power the load via the distribution bus. The switching elements may be transistors, and the diodes may be parasitic body diodes of the transistors. The power source may be a battery, such as a rechargeable battery. An output voltage level from the battery may be regulated by the controller as a function of operation of the DC-DC converter and a number of the activated or deactivated transistors. 1. A method for regulating electrical power supplied to a distribution bus , comprising:monitoring an output voltage delivered to the distribution bus, wherein the output voltage results from a delivery of current to the distribution bus by a first power source; anddelivering current from a second power source to the distribution bus via a DC-DC converter when the monitored output voltage decreases to a level equivalent to a voltage regulation setpoint of the DC-DC converter, wherein the DC-DC converter is coupled in parallel with a network of N FET/resistor pairs (where N≥1) between the second power source and the distribution bus.2. The method as recited in claim 1 , further comprising delivering current from the second power source to the distribution bus via the network of N FET/resistor pairs when the monitored output voltage decreases below a first predetermined threshold.3. The method as recited in claim 2 , wherein the N FETs within the network of N FET/resistor pairs are switched OFF when the current is being delivered by the DC-DC converter before the monitored output voltage decreases below the first predetermined threshold so that no current is delivered to the ...

MULTIFUNCTIONAL MOBILE POWER DEVICE

A power device includes a power conversion module connectable to an external power supply, a charging module capable of charging an external battery, a charge storage module capable of providing a current to start up an external device, and a control module configured to control the start-up of the external device when the power device is not connected to the external power supply. 1. A power device , comprising:a power conversion module connectable to an external power supply;a charging module capable of charging an external battery;a charge storage module capable of providing a current to start up an external device; anda control module configured to control the start-up of the external device when the power device is not connected to the external power supply.2. The power device of claim 1 , wherein the control module is configured to control an internal charging module to charge the charge storage module.3. The power device of claim 1 , wherein the control module is configured to control the charging module to charge the external battery.4. The power device of claim 1 , wherein the control module is configured to determine whether a start-up condition is satisfied and claim 1 , when the condition is satisfied claim 1 , to control a start-up of the external device.5. The power device of claim 4 , where the control module is configured to determine that the start-up condition is satisfied when a voltage of a battery within the external device is higher than a threshold voltage.6. The power device of claim 1 , wherein the control module is configured to control a reverse charging of the charge storage module by an external battery.7. The power device of claim 1 , wherein the charge storage module comprises one or more capacitors with a capacitance of approximately equal to or more than 200 F.8. The power device of claim 1 , wherein the charge storage module has more than one operating mode that utilize different levels of capacity of the charge storage module.9. ...

CHARGING AND DISCHARGING DEVICE, CHARGING AND DISCHARGING METHOD AND TERMINAL DEVICE

A charging and discharging device includes a first branch circuit and a second branch circuit connected in parallel with the first branch circuit. The first branch circuit includes a silicon-based anode lithium-ion battery. The second branch circuit includes a capacitor set configured to store electric power and to charge the silicon-based anode lithium-ion battery and/or provide power to a chargeable device connected to the charging and discharging device. 1. A charging and discharging device , comprising:a first branch circuit, comprising a silicon-based anode lithium-ion battery; anda second branch circuit, connected in parallel with the first branch circuit, the second branch circuit comprising a capacitor set, configured to store electric power and to charge the silicon-based anode lithium-ion battery and/or provide power to a chargeable device connected to the charging and discharging device.2. The charging and discharging device of claim 1 , further comprising:a charging path, connected to a power supply; anda control unit, configured to control the charging path to be connected to the first branch circuit and/or the second branch circuit such that the power supply charges the silicon-based anode lithium-ion battery and/or provides the power to the chargeable device connected to the charging and discharging device.3. The charging and discharging device of claim 1 , wherein when the charging path is not connected to the power supply claim 1 , the capacitor set is configured to charge the silicon-based anode lithium-ion battery and/or provide the power to the chargeable device connected to the charging and discharging device.4. The charging and discharging device of claim 2 , wherein the control unit is configured to control the charging path to be first connected to the second branch circuit and then connected to the first branch circuit such that the power supply first charges the capacitor set and then charge the silicon-based anode lithium-ion battery.5. ...

Control device and method for discharging a rechargeable battery

A control device for controlling discharging of a rechargeable battery, the control device comprising a rechargeable dummy cell, a first circuit configured to discharge the battery and the dummy cell, and a second circuit configured to measure the open circuit voltage of the dummy cell. The control device is configured to: determine the open circuit voltage of the dummy cell by using the second circuit, and determine the maximum capacity decrement of the battery, which is to be discharged until full discharging, based on the determined open circuit voltage of the dummy cell. The invention also refers to a corresponding method of controlling discharging of a rechargeable battery.

STORAGE SYSTEM

A storage system includes: a plurality of storage batteries different in SOH from each other; and a charge/discharge controller configured to receive SOH information for specifying the SOH of each of the plurality of storage batteries and control charge/discharge of the plurality of storage batteries based on the SOH information so as to reduce a difference in SOH between the plurality of storage batteries. 1. A storage system , comprising:a plurality of storage batteries different in a state of health (SOH) from each other; anda charge/discharge controller configured to receive SOH information for specifying the SOH of each of the plurality of storage batteries and control charge/discharge of the plurality of storage batteries based on the SOH information so as to reduce a difference in SOH between the plurality of storage batteries.2. The storage system of claim 1 , whereinthe charge/discharge controller performs the charge/discharge giving a higher priority to a storage battery relatively higher in SOH.3. The storage system of claim 1 , whereinthe SOH information is one or a plurality of information units selected from the group consisting of an internal resistance of the storage battery, a charge/discharge history of the storage battery, a voltage value of the storage battery, and a current value of the storage battery. This application claims priority to Japanese Patent Application Nos. 2019-132861 and 2019-222150 filed on Jul. 18, 2019 and Dec. 9, 2019, the entire disclosures of which are incorporated by reference herein.The present disclosure relates to a storage system having a plurality of storage batteries.Japanese Unexamined Patent Publication No. 2012-161190 discloses a technology in which, in a solar power generation system having a plurality of storage battery charge/discharge sets connected in parallel to a DC bus line, the storage battery sets are switched from one to another every fixed time period for operation, thereby aiming to equalize the lives ...

Dual-battery charging and discharging method and apparatus, terminal, and storage medium

Provided is a dual-battery charging and discharging method used for a dual-screen terminal. The method includes: obtaining a state identifier of the first display screen and a state identifier of the second display screen; determining whether the dual-screen terminal is in a charging state; in response to determining that the dual-screen terminal is in a charging state, controlling the first battery and the second battery to be charged according to the state identifier of the first display screen and the state identifier of the second display screen; and in response to determining that the dual-screen terminal is not in a charging state, controlling whether the first battery and the second battery supply power to the dual-screen terminal according to the state identifier of the first display screen and the state identifier of the second display screen.

POWER SUPPLY SYSTEM, DCDC CONVERTER DEVICE, AND CHARGING METHOD

A power supply system includes a high voltage battery, a first DCDC converter connected to the high voltage battery, a low voltage lead battery configured to be charged from the high voltage battery via the first DCDC converter, a low voltage lithium battery connected to a low voltage power supply circuit, the low voltage lead battery, and a load, a second DCDC converter connected to the low voltage power supply circuit and disposed between the low voltage lead battery and the low voltage lithium battery, a bypass circuit connected to the low voltage power supply circuit to bypass the second DCDC converter, and a control device configured to watch the low voltage lithium battery and control on/off of a switch unit provided in the bypass circuit. 1. A power supply system comprising:a high voltage battery;a first DCDC converter connected to the high voltage battery;a low voltage lead battery configured to be charged from the high voltage battery via the first DCDC converter;a low voltage lithium battery connected to a low voltage power supply circuit, the low voltage lead battery, and a load;a second DCDC converter connected to the low voltage power supply circuit and disposed between the low voltage lead battery and the low voltage lithium battery;a bypass circuit connected to the low voltage power supply circuit to bypass the second DCDC converter; anda control device configured to watch the low voltage lithium battery and control on/off of a switch unit provided in the bypass circuit.2. The power supply system according to claim 1 ,wherein a dark current flows in the bypass circuit.3. The power supply system according to claim 1 ,wherein the control device includes a switch control unit configured to control on/off of the switch unit based on a state of charge of the low voltage lithium battery.4. The power supply system according to claim 3 ,wherein the switch control unit is configured to control on/off of the switch unit based on a charging voltage of the low ...

Variable Voltage Controller

A vehicle includes an inverter connected to an energy store having a variable output voltage and including a first pair of battery partitions. The vehicle includes a controller configured to operate a first set of switches to arrange electrical connections between the first pair such that the variable output voltage is greater than battery voltage of a one of the battery partitions. The operation of switches is responsive to a parameter indicative of speed of an electric machine electrically coupled to the inverter exceeding a first predetermined threshold.

CHARGING METHOD AND DEVICE, CHARGING SYSTEM, ELECTRONIC EQUIPMENT AND STORAGE MEDIUM

A charging method for a terminal device includes establishing a charging current mapping relationship according to a relationship between a charging information parameter and an open circuit voltage of a first electrode of a battery of the terminal device and a relationship between the charging information parameter and an impedance of the first electrode of the battery. The charging current mapping relationship comprises a mapping relationship between the charging information parameter and a maximum battery charging current. The charging method also includes obtaining the charging information parameter of the battery during a charging operation, determining a charging current according to the charging information parameter and the charging current mapping relationship, and charging the battery by using the charging current. 1. A charging method for a terminal device , comprising:establishing a charging current mapping relationship according to a relationship between a charging information parameter and an open circuit voltage of a first electrode of a battery of the terminal device and a relationship between the charging information parameter and an impedance of the first electrode of the battery; wherein the charging current mapping relationship comprises a mapping relationship between the charging information parameter and a maximum battery charging current;obtaining the charging information parameter of the battery during a charging operation;determining a charging current according to the charging information parameter and the charging current mapping relationship; andcharging the battery by using the charging current.2. The charging method of claim 1 , wherein before the step of establishing the charging current mapping relationship according to the relationship between the charging information parameter and the open circuit voltage of the first electrode of the battery of the terminal device and the relationship between the charging information parameter and ...

Energy converting apparatus and method

The present invention relates to an energy converter for converting energy received from at least one energy source, wherein the at least one energy source includes a first photovoltaic generator, wherein the energy converter is configured to be connected to a second photovoltaic generator; the energy converter further includes a sensing unit configured to sense an open circuit voltage (VPVSS) of the second photovoltaic generator; and the energy converter is configured to convert energy received from the first photovoltaic generator based on the open voltage circuit sensed by the sensing unit. Moreover, the present invention relates to an energy conversion and storage system including the energy converter and least one energy storage element.

Wireless power transmitter and receiver, and method for transmitting emergency information in a wireless charging network

An apparatus and a method are provided for efficiently transmitting emergency information in a wireless charging network. The method includes receiving wireless charging power from a wireless power transmitter; detecting an occurrence of an emergency situation; generating an emergency signal including information of the emergency situation; and transmitting the generated emergency signal to the wireless power transmitter.

Balanced Charging Device and Charging System

A balanced charging device and a charging system used to solve the technical problem of too long charging time of the balanced charging device. The balanced charging device comprises a plurality of charging modules, each of which independently charges a battery unit and is provided with a positive port and a negative port with independent functions; the positive port is connected with the positive port of the battery unit corresponding to the charging module, and the negative port is connected with the negative port of the battery unit corresponding to the charging module. The charging system includes the balanced charging device. The balanced charging device and charging system provided by the disclosure are used for charging a plurality of battery units in series.

CHARGING CONTROL DEVICE, BATTERY SYSTEM, AND CHARGING CONTROL METHOD

A charging control device charges a battery device, and a control unit that is configured to control a switch and to control charging of the battery device. The control unit estimates a total voltage when each battery is not bypassed in each of the plurality of storage battery systems, selects the storage battery system having a low voltage among the estimated total voltages, and then repeatedly executes selective charging of charging the selected storage battery system so that an estimated total voltage difference between the storage battery system having the low voltage in the estimated. total voltage and the storage battery system having a. high voltage in the estimated total voltage is less than a predetermined value. 1. A charging control device which charges a battery device , a battery group with a plurality of storage battery systems in parallel in each of which a plurality of batteries are connected in series,', 'a system switch which switches between connection and disconnection of the storage battery system, and', 'a bypass switch which bypasses each of the plurality of batteries constructing the plurality of storage battery systems,, 'the battery device including 'a control unit that is configured to control the system switch and the bypass switch and to control charging of the battery device,', 'the charging control device comprisingwherein the control unit is configured to estimate a total voltage when each battery is not bypassed in each of the plurality of storage battery systems, to select the storage battery system having a low voltage among the estimated total voltages, and then to repeatedly execute selective charging. of charging the selected storage battery system so that an estimated total voltage difference between the storage battery system having the low voltage in the estimated total voltage and the storage battery system having a high voltage in the estimated total voltage is less than a predetermined value.2. The charging control device ...

METHOD FOR OPERATING A BATTERY SYSTEM

A method for operating a battery system. The battery system includes parallel-connected strings. Each string includes at least one battery module. In the battery module, multiple battery cells are interconnected in a series connection and/or in a parallel connection. The strings are switchable on and off from one another. The battery cells and/or battery cell packets are switchable on and off from one another and are bypass-able. The method includes: recognizing a fault of a battery cell; switching off and bypassing the faulty battery cell and/or the faulty battery cell packet which includes the faulty battery cell; switching off the faulty string, which includes the faulty battery cell and/or the faulty battery cell packet; comparing the string voltage of the faulty string to the string voltage of intact strings, in which no fault was recognized; discharging the intact strings if voltage differences between the strings exceed a voltage threshold value. 110-. (canceled)11. A method for operating a battery system , which includes multiple strings connected to one another in parallel , each of the strings including at least one battery module in which multiple battery cells are interconnected in a series connection and/or in a parallel connection , the strings being switchable on and off from one another , and individual battery cells of the battery cells and/or individual battery cell packets which each include multiple battery cells of the battery cells interconnected in parallel , being switchable on and off from one another and being able to be bypassed , the method comprising the following steps:recognizing a fault of a battery cell of the battery system;switching off and bypassing the faulty battery cell and/or a faulty battery cell packet in which the faulty battery cell is located;switching off a faulty string which includes the faulty battery cell and/or the faulty battery cell packet;comparing a string voltage of the faulty string to a string voltage of ...

METHOD AND APPARATUS FOR BATTERY CHARGING BASED ON USAGE HISTORY

Methods and apparatuses are disclosed for adjusting a maximum charge amount of a battery. Batteries have preferred usage parameters, such as charging rates, maximum charge amounts, heat, etc. Throughout a battery's lifespan, it is used in different ways that are outside of these parameters. This slowly degrades the quality of the battery. According to the present disclosure, this usage is monitored and accounted for so as to increase the lifespan of the battery and prevent or reduce further degradation. Specifically, the usage is separated into bins, such as temperature and voltage bins. Each bin is associated with a different weighting factors. The amount of time the battery has spent in each bin is multiplied by the corresponding weighting factors, and these values are summed to provide an overall degradation value of the battery. Charging or other aspects of the battery are then controlled according to this degradation value. 1. A battery charging system , comprising:a battery;a memory that stores usage statistics of the battery; and receive usage statistics of the battery;', 'receive usage parameters of the battery;', 'calculate a wear factor based on the usage statistics and the usage parameters; and', 'control a charging rate of the battery based on the calculated wear factor., 'a controller configured to2. The battery charging system of claim 1 , wherein the controller is further configured to receive real-time usage information claim 1 , andwherein the real-time usage information is received from one or more sensors.3. The battery charging system of claim 2 , wherein the one or more sensors include a current sensor.4. The battery charging system of claim 1 , wherein the calculating includes:assigning voltage and temperature values of the received usage statistics to bins defined by the received usage parameters, each bin being associated with a corresponding scaling factor;determining an amount of time the battery has spent in each bin; andmultiplying each ...

UNIVERSAL CHARGING DEVICE AND UNIVERSAL CHARGING METHOD THEREOF

A universal charging device and a universal charging method thereof is disclosed. An AC voltage is converted into a DC charging voltage. At least two first charging processes are sequentially performed. In each first charging process, the DC charging voltage is adjusted to be larger than the terminal voltage of a battery based on the terminal voltage and the DC charging voltage charges the battery. The DC charging voltage generates a DC charging current and a pulse current to flow through the battery until the terminal voltage is equal to the DC charging voltage. A voltage across the battery established by the pulse current satisfies a charged condition. When the terminal voltage is equal to the DC charging voltage, the DC charging current is converted into a decreasing trickle current until the value of the trickle current is decreased to a triggered current value. 1. A universal charging device comprising:a charger coupled to at least one battery and configured to receive an alternating-current (AC) voltage and convert the AC voltage into a direct-current (DC) charging voltage, wherein the at least one battery has a terminal voltage less than a rated voltage of the at least one battery; anda power control detector coupled to the at least one battery and the charger, wherein after the charger and the power control detector determines that the at least one battery is a battery to be charged, the charger and the power control detector sequentially perform at least two first charging processes;wherein in each of the at least two first charging processes, the power control detector detects the terminal voltage, controls the charger to adjust the DC charging voltage to be larger than the terminal voltage based on the terminal voltage, and controls the charger to generate at least one pulse voltage based on the DC charging voltage, the charger cooperates with the DC charging voltage to charge the at least one battery and respectively generates a direct-current (DC) ...

ELECTRONIC DEVICE FOR CHARGING BATTERY BASED ON DIRECT CHARGING AND OPERATING METHOD OF THE ELECTRONIC DEVICE

An electronic device includes a charging integrated circuit (IC) including a direct charging circuit that charges a battery; and an application processor that issues a request to an external power source to output a maximum voltage corresponding to a target current, performs a ramp-up operation on a charging current input to the charging IC on the basis of the maximum voltage, compensates for a difference between the charging current and the target current in response to the charging current entering a constant current period, and enters a sleep mode during the constant current period in response to that the charging current reaching the target current. 1. An electronic device comprising:a charging integrated circuit (IC) including a direct charging circuit configured to charge a battery; andan application processor configured to issue a request to output a maximum voltage corresponding to a target current to an external power source, perform a ramp-up operation on a charging current input to the charging IC based on the maximum voltage, compensate for a difference between the charging current and the target current in response to the charging current entering a constant current period, and enter a sleep mode during the constant current period in response to the charging current reaching the target current.2. The electronic device of claim 1 , wherein when a level of the charging current is greater than a level of the target current claim 1 , the application processor is configured to transmit information issuing a command to decrease an output current claim 1 , to the external power source claim 1 , andwhen the level of the charging current is less than the level of the target current, the application processor is configured to transmit information issuing a command to increase the output current to the external power source.3. The electronic device of claim 2 , wherein the application processor is configured to increase a count value by one when transmitting the ...

Battery heater systems and methods

Systems and methods for supplying power to a battery heater in one or more battery modules. A first DC electrical signal derived from an AC source or a second DC electrical signal derived from a DC bus is used to power a battery heater of one or more battery modules in dependence on a voltage level associated with the first DC electrical signal relative to a voltage level of the second DC electrical signal.

System for Battery Charging

A power converter includes a conversion module. The conversion module may operate in an active mode or in a bypass mode. In the active mode, the conversion module may receive an input voltage and convert the input voltage to a fixed output voltage. In the bypass mode, the voltage across the output terminals of the conversion module is at substantially zero volts. An adjustable conversion module may convert input voltage to an adjustable output voltage. The output terminals of the conversion module and the output terminals of the adjustable conversion module are connected in series to form a series string. A controller may selectively activate the conversion module to be in the active mode or the bypass mode, and control the adjustable conversion module responsive to at least one of a load voltage and a load current required by a load connected across the series string. 1. An apparatus comprising:a first fixed conversion module configured to receive a first input voltage and to output a fixed output voltage;an adjustable conversion module configured to receive a second input voltage and to convert the second input voltage to an adjustable output voltage; anda controller configured to control the adjustable conversion module and the first fixed conversion module;wherein input nodes of the first fixed conversion module and of the adjustable conversion module are connected in parallel to one another at input terminals, and output nodes of the first fixed conversion module and of the adjustable conversion module are connected in series.2. The apparatus of claim 1 , wherein the adjustable conversion module comprises an adjustable converter.3. The apparatus of claim 2 , wherein the adjustable conversion module comprises a second fixed conversion module cascaded with the adjustable converter.4. The apparatus of claim 1 , further comprising a third fixed conversion module claim 1 , wherein input nodes of the first fixed conversion module and of the third fixed conversion ...

ELECTRICAL ENERGY STORAGE SYSTEM AND METHOD FOR OPERATING SAME

Electrical energy storage system comprising a plurality of electrochemical energy storage units, which are electrically connectable by means of first switches to first terminal poles of the electrical energy storage system for providing a first electrical voltage; at least one second terminal pole for providing a second electrical voltage; at least one sensor for detecting a voltage variable representing an electrical voltage of one or more electrochemical energy storage units, and/or a temperature variable representing a temperature of one or more electrochemical energy storage units; at least one second switch, which is electrically connected to at least one of the electrochemical energy storage units, wherein, by means of the second switch, a pole of the at least one electrochemical energy storage unit is electrically connectable to the second terminal pole for providing the second electrical voltage, which is substantially equal to or less than the first electrical voltage, depending on the detected voltage variable and/or temperature variable. 1100200300. An electrical energy storage system ( , , ) comprising:{'b': 102', '1', '102', '2', '102', '201', '1', '202', '2', '202', '302', '1', '302', '2', '302', '104', '103', '1', '103', '2', '203', '1', '203', '2', '303', '1', '303', '2', '100', '200', '300, 'i': n', 'n', 'n, 'a plurality of electrochemical energy storage units ((), (), (), (), (), (), (), (), ()), which are electrically connectable by means of first switches () to first terminal poles ((), (), (), (), (), ()) of the electrical energy storage system (, , ) for providing a first electrical voltage;'}{'b': 106', '206', '1', '206', '2', '306', '1', '306', '2, 'at least one second terminal pole (, (), (), (), ()) for providing a second electrical voltage;'}{'b': 102', '1', '102', '2', '102', '201', '1', '202', '2', '202', '302', '1', '302', '2', '302', '102', '1', '102', '2', '102', '201', '1', '202', '2', '202', '302', '1', '302', '2', '302, 'i': n', 'n ...

DETECTION OF DEVICE REMOVAL FROM A SURFACE OF A MULTI-COIL WIRELESS CHARGING DEVICE

Systems, methods and apparatus for wireless charging are disclosed. A charging device has a plurality of charging cells provided on a charging surface, a charging circuit and a controller. The controller may be configured to cause the charging circuit to provide a charging current to a resonant circuit when a receiving device is placed on the charging surface, provide a measurement slot by causing the charging circuit to decrease or terminate the charging current for a period of time and determine whether the receiving device has been removed from the charging surface based on measurement of a characteristic of the resonant circuit during the measurement slot. The characteristic of the resonant circuit may be representative of electromagnetic coupling between a transmitting coil in the resonant circuit and a receiving coil in the receiving device. 1. A method for operating a charging device , comprising:providing a charging current to a resonant circuit when a receiving device is placed on a charging surface of the charging device;providing a measurement slot by decreasing or terminating the charging current for a period of time; anddetermining whether the receiving device has been removed from the charging surface based on measurement of a characteristic of the resonant circuit during the measurement slot, wherein the characteristic of the resonant circuit is representative of electromagnetic coupling between a transmitting coil in the resonant circuit and a receiving coil in the receiving device.2. The method of claim 1 , further comprising:detecting a change or rate of change in voltage or current level associated with the resonant circuit; andproviding the measurement slot responsive to detecting the change or rate of change in the voltage or current level.3. The method of claim 1 , wherein the resonant circuit includes a transmitting coil.4. The method of claim 3 , wherein the characteristic of the resonant circuit is indicative of coupling between the ...

Detection of device removal from a surface of a multi-coil wireless charging device

Systems, methods and apparatus for wireless charging are disclosed. A charging device has a plurality of charging cells provided on a charging surface, a charging circuit and a controller. The controller may be configured to cause the charging circuit to provide a charging current to a resonant circuit when a receiving device is placed on the charging surface, detect a change or rate of change in voltage or current level associated with the resonant circuit, provide a measurement slot by terminating the charging current for a period of time, and determine that the receiving device has been removed from the charging surface by performing a passive or digital ping procedure during the measurement slot.

METHOD FOR CARRYING OUT A CHARGING PROCESS OF A VEHICLE-EXTERNAL CHARGING APPARATUS FOR CHARGING A VEHICLE, AND CHARGING APPARATUS

A method is provided for carrying out a charging process of a vehicle-external charging apparatus () for charging a vehicle (), in particular an electric or hybrid vehicle. The method includes using a current measuring instrument () of the charging apparatus () to measure a charging current. The method then includes closing a first contactor () of the charging apparatus () and a second contactor () of the vehicle () for a time period that is measured by the current measuring instrument (). A charging apparatus () for performing the method also is provided. 1. A method for carrying out a charging process of a vehicle-external charging apparatus for charging a vehicle , the method comprising measuring a charging current by a current measuring instrument of the charging apparatus and the current measuring instrument for measuring a time period in which a first contactor of the charging apparatus and a second contactor of the vehicle are closed.2. The method of claim 1 , the measuring of the time period is carried out by an evaluation device of the current measuring instrument.3. The method of claim 2 , wherein a price for the charging process is determined the measured charging current and the measured time period.4. The method of claim 3 , wherein the evaluation device has a display device claim 3 , and the method comprises separately displaying on the display device respective amounts for charging and for parking.5. The method of claim 1 , wherein measuring the time period comprises transmitting information about whether the first contactor is open or closed from a first positively driven auxiliary contact of the first contactor via a first sensor line to the evaluation device of the current measuring instrument claim 1 , and transmitting information about whether the second contactor is open or closed from a second positively driven auxiliary contact of the second contactor via a second sensor line to the evaluation device of the current measuring instrument.6. The ...

Portable and modular energy storage with adjustable waveform characteristics for electric vehicles

A power system using multiple battery packs to generate a defined power output may include a plurality of modular battery packs, each of which may include: a first housing, a plurality of battery cells, a first interface that communicates information, and a second interface that transmits power. The power system may also include a second housing configured to removably receive the plurality of modular battery packs and a waveform generation circuit, and a processing system that is configured to receive the information from the battery packs indicating electrical waveform characteristics for power received from each, to cause the waveform generation circuit to aggregate the power received from the modular battery packs, and to cause the waveform generation circuit to generate an output electrical signal based on stored parameters.

Systems and methods to charge a battery at different charge rates and indicate when charging at a faster rate is available

In one aspect, a device includes a processor, at least one system component accessible to the processor, a battery accessible to the processor and that provides power to the processor and the at least one system component, a display accessible to the processor and powered by the battery, and storage accessible to the processor. The storage bears instructions executable by the processor to permit charging of the battery at a first rate during a first charging instance and to permit charging of the battery at a second rate during a second charging instance, where the second rate is slower than the first rate and the second charging instance is subsequent to the first charging instance. The instructions are also executable to provide an indication regarding the availability of again charging the battery at the first rate subsequent to the first charging instance.

Charging system, charging method, and power adapter

The present disclosure discloses a charging system, a charging method and a power adapter. The system includes a power adapter and a terminal. The power adapter includes a first rectifier, a switch unit, a transformer, a second rectifier, a sampling unit, a control unit and a first isolation unit. The control unit outputs a control signal to the switch unit, and adjusts a duty ratio of the control signal according to a current value and/or voltage value sampled by the sampling unit, such that a third voltage with a third ripple waveform outputted by the second rectifier meets a charging requirement. The terminal includes a battery. When the terminal is coupled to the power adapter, the third voltage is applied to the battery.

BATTERY CHARGING METHOD AND ELECTRONIC DEVICE

Disclosed is a battery charging method, comprising: during battery charging, acquiring an electric quantity change value of a battery when the voltage of the battery is charged from an initial voltage to a target voltage; determining an electric quantity change value per unit voltage according to a voltage difference value between the target voltage and the initial voltage, and the electric quantity change value; and when the electric quantity change value per unit voltage is less than or equal to a preset numerical value, reducing a charging current acting on the battery until the unit voltage change value is greater than the preset numerical value. 1. A battery charging method , comprising:during a process of charging a battery, acquiring a change value of electricity amount of the battery when a voltage of the battery is charged from an initial voltage to a target voltage;determining a change value of electricity amount per unit voltage according to a voltage difference between the target voltage and the initial voltage, and the change value of electricity amount; andwhen the change value of electricity amount per unit voltage is less than or equal to a preset change threshold, reducing a charging current acting on the battery until the change value of electricity amount per unit voltage is greater than the preset change threshold.2. The method according to claim 1 , after the determining a change value of electricity amount per unit voltage according to a voltage difference between the target voltage and the initial voltage claim 1 , and the change value of electricity amount claim 1 , further comprising:when the change value of electricity amount per unit voltage is greater than the preset change threshold, increasing the charging current acting on the battery.3. The method according to claim 1 , after the determining a change value of electricity amount per unit voltage according to a voltage difference between the target voltage and the initial voltage claim ...

Resonant Reflection Device Detection

Systems, methods and apparatus for wireless charging are disclosed. A charging device has a plurality of charging cells provided on a charging surface, a charging circuit and a controller. The controller may be configured to cause the charging circuit to cause an excitation flux to be transmitted from the charging device, determine that a compatible chargeable device is available for charging by the charging device when resonance is detected in response to the excitation flux, and provide a charging current to a power transmitting coil of the charging device. The excitation flux may be transmitted in a first range of frequencies that includes a first nominal resonant frequency associated with compatible chargeable devices. The charging current may be provided in a second range of frequencies that includes a second nominal resonant frequency associated with the compatible chargeable devices. 1. A method for operating a charging device , comprising:transmitting an excitation flux from the charging device, the excitation flux being transmitted in a first range of frequencies that includes a first nominal resonant frequency associated with compatible chargeable devices;determining that a compatible chargeable device is available for charging by the charging device when resonance is detected in response to the excitation flux; andproviding a charging current to a power transmitting coil of the charging device, the charging current being provided in a second range of frequencies that includes a second nominal resonant frequency associated with the compatible chargeable devices.2. The method of claim 1 , wherein the first range of frequencies and the second range of frequencies are separated by a third range of frequencies.3. The method of claim 1 , wherein the first nominal resonant frequency is defined as 1 megahertz and the second nominal resonant frequency is defined as 100 kilohertz.4. The method of claim 1 , wherein transmitting the excitation flux comprises: ...

Maintaining a vehicle battery

A method is provided for determining a lower voltage set-point, an upper voltage set-point, a temperature-dependent upper current set-point, a time limit value, and a lower current hysteresis threshold set-point based on a measured temperature of a battery. A charge current from a battery charging circuit is provided. If a charge voltage is above the lower voltage set-point and below the upper voltage set-point and the charge current exceeds the temperature-dependent upper current set-point, timer is started. If the timer reaches a time limit value while the charge current exceeds the temperature-dependent upper current set-point and the charge voltage is between the lower voltage set-point and the upper voltage set-point, the charge current is reduced.

Linear Charger Circuit and Method of Operating Linear Charger Circuit

A linear charger circuit and method for providing an output current at an output node is presented. The circuit contains a pass device connected between an input node and the output node, first and second replica devices connected in parallel to the pass device, with their control terminals coupled to a control terminal of the pass device. The first replica device is coupled to a first circuit path for determining whether current output by the linear charger circuit shall be terminated. The second replica device is coupled to a second circuit path for providing feedback for controlling the pass device, a control circuit coupled to the second circuit path for controlling the pass device based on a quantity indicative of a current flowing through the second circuit path, and a switching circuit coupled to the second circuit path.

Electronic device and method for managing battery thereof

An electronic device is disclosed. The electronic device may include a housing having a first housing structure and a second housing structure, wherein the first and second housing structures are foldable with respect to each other about a hinge axis, a processor disposed in the housing, a first battery disposed in the first housing structure, a second battery disposed in the second housing, a flexible printed circuit board (FPCB) extending from the first housing structure to the second housing structure and crossing the hinge axis, a power management integrated circuit (PMIC), a first charging control circuit disposed in the first housing structure, and a second charging control circuit disposed in the second housing structure. In addition, various embodiments are possible which are understood through the disclosure.

Ac power adapter having a switchable capacitor

A power adapter is provided to supply electric power from an alternating current from an alternating current (AC) power supply to a powered apparatus. It includes a switchable capacitor circuit housed within a housing and including: a first switch path associated with a positive half cycle of the alternating current and a second switch path associated with a negative half cycle of the alternating current, both coupled across the AC power supply. Each switch path includes a switchable capacitor in series with a switch.

METHOD AND APPARATUS FOR DEEPLY DISCHARGED BATTERY DETECTION

Systems and processes are provided to detect a deeply discharged rechargeable battery. A process includes initiating a processor operative to perform a function within a battery-operated device, determining a first output voltage of a battery, charging the battery with a battery charger for a duration of time between three and seven seconds in response to the first output voltage being less than a cutoff voltage, rebooting the battery-operated device, determining a second output voltage of the battery, providing a user prompt indicative of battery fault in response to the second output voltage being less than the cutoff voltage, and shutting down the battery-operated device. 1. A method comprising:initiating a processor operative to perform a function within a battery-operated device;determining a first output voltage of a battery;charging the battery with a battery charger for a duration of time between three and seven seconds in response to the first output voltage being less than a cutoff voltage;rebooting the battery-operated device;determining a second output voltage of the battery;providing a user prompt indicative of battery fault in response to the second output voltage being less than the cutoff voltage; andshutting down the battery-operated device.2. The method of further including determining a third output voltage of the battery and wherein the shutting down of the battery-operated device is performed in response to the third output voltage being less than a cutoff voltage.3. The method of wherein the cutoff voltage is zero volts and is indicative of the battery being disconnected by a cutoff circuitry in response to the battery being discharged below a lower voltage limit.4. The method of wherein the user prompt is provided via a light emitting diode.5. The method of wherein the battery is a lithium ion battery.6. The method of wherein the cutoff voltage is indicative of the battery being discharged below a lower voltage limit.7. The method of further ...

DC-Charging Power Source Adaptor And Mobile Terminal

This disclosure relates to a DC-charging power source adaptor including a charging interface, an AC to DC converting unit, and a controlling unit; and the DC-charging power source adaptor is timed to communicate with a mobile terminal which is a charging object, to acquire a change in voltage of a battery in the mobile terminal and further adjust dynamically a volt value of charging voltage output by the DC-charging power source adaptor according to the change in voltage of the battery, and DC-charges the battery in the mobile terminal using the charging voltage.

Charging method for adjusting charging current and mobile terminal

In a charging method of adjusting charging current, an instant input voltage of a mobile terminal, an instant input current of the mobile terminal, an instant battery voltage, and instant system load current of the mobile terminal are acquired when a charging device charges the mobile terminal. An instant charging current is computed based on instant input power, instant system load power, and the instant battery voltage. The instant input power is defined as the multiplication of instant input current and the instant input voltage, and the instant system load power is defined as the multiplication of the instant battery voltage and the instant system load current. An instant input current increases when the instant battery voltage is less than a charging cut-off voltage and the instant charging current is less than preset current.