ЭЛЕМЕНТ АККУМУЛЯТОРНОЙ БАТАРЕИ И УСТРОЙСТВО МОНИТОРИНГА ДЛЯ БАТАРЕИ В СБОРЕ

Элемент аккумуляторной батареи включает в себя элемент, генерирующий энергию, электрод, соединенный с элементом, генерирующим энергию, и сконфигурированный с возможностью электрического соединения элемента, генерирующего энергию, с внешней стороной, и внешний элемент, сконфигурированный с возможностью покрытия элемента, генерирующего энергию, причем электропроводный элемент в предложенном устройстве выполнен в виде тонкой пленки, соединенной с изолирующим слоем. Внешний элемент включает в себя изолирующий слой и электропроводный слой, а электропроводный слой включает в себя участок соединения, электрически соединенный с внешней стороной. Обеспечение надежного мониторинга аккумуляторной батареи при компактности устройства и без увеличения размера батареи с таким устройством является техническим результатом изобретения. 2 н. и 15 з.п. ф-лы, 18 ил.

МНОГОСЛОЙНАЯ БАТАРЕЯ

Изобретение относится к аккумуляторным батареям. Технический результат - уравнивание заряда на каждом аккумуляторе батареи. Биполярная батарея сконструирована посредством наслаивания множества биполярных электродов, каждый из которых образован слоевидным токоотводом, слоем активного материала положительного электрода, расположенным на одной поверхности токоотвода, и слоем активного материала отрицательного электрода, расположенным на другой поверхности токоотвода, через слой электролита. К части периферийной кромки токоотвода прикреплен вывод (21a, 21b) для определения напряжения. Посредством расположения вывода (21b) для определения напряжения смежного токоотвода на противоположной стороне от второй прямой линии (Da2), которая проходит через центроид (O) токоотвода и является ортогональной первой прямой линии (Da1), которая соединяет вывод (21a) для определения напряжения с центроидом (O) токоотвода, состояние заряда внутри идентичного единичного аккумулятора (15) становится равномерным ...

МНОГОСЛОЙНАЯ БАТАРЕЯ

... 1. Биполярная батарея (2), в которой множество биполярных электродов (3), каждый из которых содержит слоевидный токоотвод (4, 4a, 4b, 4c, 4d, 4aa, 4ba, 4ca, 4da), слой (5) активного материала положительного электрода, расположенный на одной поверхности токоотвода (4, 4a, 4b, 4c, 4d, 4aa, 4ba, 4ca, 4da), и слой (6) активного материала отрицательного электрода, расположенный на другой поверхности токоотвода (4, 4a, 4b, 4c, 4d, 4aa, 4ba, 4ca, 4da), наслоены через слой (7) электролита, и к части периферийной кромки токоотвода (4, 4a, 4b, 4c, 4d, 4aa, 4ba, 4ca, 4da) прикреплен вывод (21, 21a, 21b, 21c, 21d) для определения напряжения,причем при условии, что прямая линия, соединяющая центроид токоотвода (4, 4a, 4b, 4c, 4d, 4aa, 4ba, 4ca, 4da) и прикрепленный к нему вывод (21, 21a, 21b, 21c, 21d) для определения напряжения, является первой прямой линией (Da1, Db1, Dc1, Dd1), а прямая линия, которая проходит через этот центроид и является ортогональной первой прямой линии, является второй прямой ...

БАТАРЕЙНЫЙ БЛОК

... 1. Батарейный блок, содержащий:батарею вторичных элементов;элемент обнаружения тока для обнаружения разрядного тока, текущего из батареи вторичных элементов, или зарядного тока, текущего в батарею вторичных элементов;секцию мониторинга для введения сигнала тока разрядного тока или зарядного тока через элемент обнаружения тока и для введения сигнала напряжения батареи вторичных элементов; иуправляющий микрокомпьютер для выполнения управления разрядкой или управления зарядкой, основываясь на сигналах из секций мониторинга,причем сигнал тока через элемент обнаружения тока вводится и в секцию мониторинга и в управляющий микрокомпьютер.2. Батарейный блок по п.1, в котором секция мониторинга сконструирована с возможностью передавать сигнал тока разрядного тока или зарядного тока в управляющий микрокомпьютер посредством связи.3. Батарейный блок по п.1 или 2, в котором когда разница между сигналом разрядного тока, переданным из секции мониторинга в управляющий микрокомпьютер, и сигналом разрядного ...

Verfahren zum Bestimmen einer Ladekapazität einer Speicherzelle

Verfahren zum Bestimmen einer Ladekapazität (317c) einer Speicherzelle (102c), die zum Speichern elektrischer und/oder chemischer Energie eingerichtet ist, wenigstens umfassend die Schritte:- Ermitteln eines Anfangsladezustandes (210c) der Speicherzelle (102c),- wenigstens teilweises Aufladen oder Entladen der Speicherzelle (102c) für eine Ladezeitdauer,- Ermitteln eines Endladezustandes (313c) der Speicherzelle (102c),- Bestimmen der Ladekapazität (317c) der Speicherzelle (102c) abhängig von dem Endladezustand (313c) und einem Soll-Ladezustand (212) der Speicherzelle (102c), dadurch gekennzeichnet, dass der Soll-Ladezustand (212) abhängig von einem Referenzladezustand einer von der Speicherzelle (102c) verschiedenen Referenzspeicherzelle (102b) bestimmt wird, wobei als Referenzspeicherzelle aus einer Gruppe von Speicherzellen diejenige Speicherzelle mit einem geringsten Ladezustand gewählt wird.

Schutzschaltung für einen Akkupack

Schutzschaltung für eine Anordnung aus einer Vielzahl von Einzelzellen (4) in einem Akkupack (1), wobei eine vorgegebene Anzahl von Einzelzellen (4) in einer Zellreihe (A, B, C, D) hintereinander geschaltet sind und zumindest zwei Zellreihen (A, B, C, D) zueinander parallel liegen, und zumindest ein an einer Stelle einer Zellreihe (A, B, C, D) zwischen den Einzelzellen (4) liegender Zellverbinder (Zna, Znb, Znc, Znd) über eine Ausgleichsleitung (Lna, Lab, Lnc) mit dem an einer gleichen Stelle der parallelen Zellreihe (A, B, C, D) liegender Zellverbinder (Zna, Znb, Znc, Zna) elektrisch verbunden ist, und das Potenzial (Unr) des mit der Ausgleichsleitung (Lna, Lab, Lnc) verbundenen Zellverbinders (Zna, Znb, Znc, Znd) der einen Stelle der einen Zellreihe (A) sowie das Potenzial (Unl) des mit der Ausgleichsleitung (Lna, Lnb, Lnc) elektrisch verbundenen Zeltverbinders (Zna, Znb, Znc, Zna) an der gleichen Stelle der parallelen Zellreihe (A, B, C, D) erfasst und die erfassten Potenziale (Unr, ...

Method for determining battery threshold values and/or prognosticated current values for battery system of common controller of e.g. hybrid vehicle, involves computing threshold values and/or current values based on results of prediction

The method involves performing power prediction for each of battery strands (11, 12) and evaluating results (U-Pred1, U-Pred2) of the power predictions of each battery strand. Another power prediction is performed based on evaluation results of the former power prediction. Threshold values (Out3) and/or prognosticated current values (Out4) are computed for a battery system (10) based on results (I-Pred-Short, I-Pred-Long, U-Pred- Short, U-Pred-long) of the latter power prediction, where the threshold values contain border voltages and/or marginal currents. Independent claims are also included for the following: (1) a method for charging and/or discharging a battery system (2) a common battery controller.

BATTERIEUEBERWACHUNGS- UND BATTERIEZUSTANDSANZEIGESYSTEM FUER EINE BATTERIEVIELFACHPACKUNG.

Battery monitoring arrangement during use by large users e.g. In hospitals

The arrangement provides every battery or cell (1) with a monitor (2) connected optically via an electrically isolated data bus light guide (7) to an evaluation unit (8) which can be interrogated regarding the status of each battery ...

Verfahren zur Bestimmung eines Abnutzungszustandes eines Batteriemoduls, Batteriemanagementsystem, Mehrphasenbatteriesystem und Kraftfahrzeug

Die vorliegende Erfindung betrifft ein Verfahren zur Bestimmung eines Abnutzungszustandes eines Batteriemoduls (130) mit mindestens einer Batteriezelle, beispielsweise eine Lithium-Ionen-Batteriezelle, wie sie etwa in Traktionsbatterien (140) von Elektro- oder Hybridkraftfahrzeugen, also in Kraftfahrzeugen mit zumindest teil- oder zeitweise elektrisch betriebenen Antrieben (150), Verwendung findet. Die Erfindung betrifft daher auch ein Kraftfahrzeug und ein Batteriemanagementsystem (160). Das beschriebene Verfahren umfasst die Bestimmung des ohmschen Innenwiderstandes aus Messungen von Stromstärken. Das Batteriemodul (100) kann mit mindestens einem weiteren Batteriemodul (100) seriell elektrisch positiv oder negativ verbunden oder von dem mindestens einem weiteren Batteriemodul (100) elektrisch abgetrennt werden. Das Verfahren ist dadurch gekennzeichnet, dass das Verfahren ein Abtrennen des Batteriemoduls (100) und die Messung von Stromstärken des abgetrennten Batteriemoduls (100) in einem ...

Fehlererkennungsverfahren und -gerät in einem Batteriesatz system

SYSTEM ZUM MESSEN VON SPANNUNGSUNTERSCHIEDEN ZWISCHEN BATTERIEZELLEN UND ZUM ERLANGEN VON BATTERIEZELLENSPANNUNGEN UNTER VERWENDUNG DER SPANNUNGSUNTERSCHIEDE

Die Offenbarung stellt ein System zum Messen von Spannungsunterschieden zwischen Batteriezellen und zum Erlangen von Batteriezellenspannungen unter Verwendung der Spannungsunterschiede bereit. Ein System zum Überwachen von Batteriezellen einer Batterie beinhaltet einen Kondensator, einen Prozessor und eine Steuerung. Die Steuerung ist konfiguriert, um den Kondensator mit einer ersten Batteriezelle zu verbinden, um den Kondensator auf eine Spannung der ersten Batteriezelle zu laden, und dann (i) den Kondensator mit einer zweiten Batteriezelle zu verbinden, um eine Schaltung mit einem Ausgang zu bilden, der einen Spannungsunterschied des Kondensators und der zweiten Batteriezelle bildet, und (ii) den Ausgang mit dem Prozessor verbinden, damit der Prozessor den Spannungsunterschied misst. Der Spannungsunterschied ist der Spannungsunterschied zwischen der ersten Batteriezelle und der zweiten Batteriezelle.

System und Verfahren zur Positionsbestimmung von Batteriemodul/-pack-Steuereinheiten

Die Erfindung betrifft ein System und ein Verfahren zur Positionsbestimmung innerhalb einer Verschaltung von Batteriemodul/-pack-Steuereinheiten in einer Batterie, umfassend:n Batteriemodul/-pack-Steuereinheiten, welche jeweils mit einem Batteriemodul/-pack verbunden und dazu eingerichtet sind, das jeweilige Batteriemodul/-pack zu steuern;eine erste Batteriemodul/-pack-Position und n-1 zweite Batteriemodul/-pack-Positionen, an welchen jeweils ein Batteriemodul/-pack mit einer der n Batteriemodul/-pack-Steuereinheiten anordenbar ist;wobei die n Batteriemodul/-pack-Steuereinheiten jeweils eine ein Batteriemodul/-pack-Positions-abhängiges Eingangssignal empfangende erste Anschlusseinheit und eine ein Positionskennungs-abhängiges erstes Ausgangssignal ausgebende zweite Anschlusseinheit aufweisen, wobei die Positionskennungen der n Batteriemodul/-pack-Steuereinheiten jeweils Eingangssignal-abhängig setzbar sind.

VORRICHTUNG UND VERFAHREN ZUR MESSUNG DER BRENNSTOFFZELLENSPANNUNG UND DES HOCHFREQUENZWIDERSTANDES

Battery cell voltage measuring system

The measuring system consists of two system components, namely a measuring instrument (2) containing a display unit (20) and a measurement value record printer (3). The two components (2 and 3) are operationally connected via a connecting cable (7). The voltage measuring instrument (2) has a microcomputer equipped with control electronics (11) and an erasable measurement-value memory (12). In the measurement-value memory, the battery cell voltages measured in a measuring cycle and their associated battery cell numbers are stored. The storage is dependent on a transfer command which is given by a command-issuing device (13, 10). The microcomputer is also associated with an output device for outputting the battery cell voltages stored in a measuring cycle and the associated battery cell numbers from the measurement-value memory (12) into the printer (3). ...

Voltage monitoring circuit for e.g. hybrid vehicle, has separation device and power supply connected with lower voltage-data outputs, where voltage signal is output to extra-low voltage-data output, which is separated from outputs

The circuit (20) has batteries (1.1-1.n) connected in series, and potential and measuring signal detection elements (3, 5) with lower voltage inputs, which are connected with potential test points (11.1-12). The elements are arranged to detect potentials at the potential test points and output a voltage value signal to lower voltage-data outputs. A galvanic separation device (7) and a low voltage power supply (8) are connected with the lower voltage-data outputs. The signal is output to an extra-low voltage-data output, which is galvanically separated from the lower voltage-data outputs. The galvanic separation is carried out by Bluetoothmodules. An independent claim is also included for a method for monitoring low voltage sections of an electrical drive.

System for monitoring and recharging individual cells of storage battery

The monitoring and recharging system has a number of electronic units (2) connected by a two-wire lead (3) to the separate cells of the accumulator battery. In a rechargeable mode, all the cells to be recharged, are chargeable in parallel over the two wire lead, and in an information transmitting mode, all information values of all the cells are transmittable. A central master system is provided for the control of the electronic units, across which the operating modes of recharging and monitoring can be changed over. An AC voltage fed transformer (4) is provided in the electronic unit, for the galvanic separation of the accumulator cells. The transformer has a first sec. winding (4b) with a DC rectifier (5a,5b), across which all individual cells are chargeable to a uniform final voltage.

Überwachungssystem

Überwachungssystem (US) mit einer Überwachungseinheit (UW) und einem mittels der Überwachungseinheit (UW) zu überwachenden Schaltkreiselement (SK), wobei die Überwachungseinheit (UW) und das Schaltkreiselement (SK) in einer gemeinsamen Umhüllung zum Schutz der elektrischen Verbindungen zwischen der Überwachungseinheit (UW) und dem Schaltkreiselement (SK) integriert sind, und die Überwachungseinheit (UW) das Schaltkreiselement (SK) anhand einer ersten elektrischen Größe überwacht, und wobei die Überwachungseinheit (UW) eine Steuerungseinheit (ST) und eine erste Schaltungseinheit (U1) und eine zweite Schaltungseinheit (U2) aufweist, und wobei die Steuerungseinheit (ST) mit der ersten Schaltungseinheit (U1) und der zweiten Schaltungseinheit (U2) monolithisch auf einem Halbleiterbauelement (HALB) integriert sind, und die erste Schaltungseinheit (U1) mit einem ersten Leitungsabschnitt (L1) an einer ersten Anschlussstelle (AS1) und an einer von der ersten Anschlussstelle (AS1) in einer ersten ...

Spannungsdetektionsvorrichtigung für eine zusammengesetzte Batterie

Eine Spannungsdetektionsvorrichtung für eine zusammengesetzte Batterie zum Detektieren einer Spannung an einer zusammengesetzten Batterie, die eine Vielzahl von in Reihe geschalteten Einzelbatterien umfasst, umfasst: Einzelbatteriespannungsdetektionsschaltungen, die Spannungen an den jeweiligen Einzelbatterien detektieren; Einzelbatteriespannungsdetektionsanschlüsse, die mit Enden der Einzelbatterien verbunden sind; Verbinder, die die Einzelbatteriespannungsdetektionsanschlüsse und die Einzelbatterien verbinden; Spannungsdetektionsanschlüsse TH/TL, die Spannungen an jeweils einer der Einzelbatterien, die an jeweils einem Ende in der zusammengesetzten Batterie angeordnet ist, detektieren, eine Spannungsdetektionsschaltung für eine zusammengesetzte Batterie, die eine Potentialdifferenz zwischen den Spannungsdetektionsanschlüssen detektiert; einen Einzelbatteriespannungssummenberechner, der eine Summe der von den Einzelbatteriespannungsdetektionsschaltungen detektierten Spannungen berechnet ...

Zweispannungsbatterie mit Stromsensoren und Kalibrierverfahren hierfür

Die Erfindung betrifft eine Zweispannungsbatterie für ein Fahrzeug umfassend eine Mehrzahl von Batteriezellen, wobei jeweils eine Gruppe von Batteriezellen zu einem Batteriezellblock verbunden ist, und umfassend eine Batterieelektronik mit einer Mehrzahl von Leistungsschaltelementen zum seriellen und/oder parallelen Verbinden jedenfalls einzelner Batteriezellblöcke, wobei in einer ersten Verbindungsanordnung der Batteriezellblöcke eine erste Spannung und wobei in einer zweiten Verbindungsanordnung der Batteriezellblöcke eine zweite Spannung bereitgestellt ist, dadurch gekennzeichnet, dass wenigstens einzelnen Batteriezellblöcken ein Blockstromsensor mit einem Messwiderstand zugeordnet ist, welcher ausgebildet ist zum Messen eines Blockstroms durch den einen zugeordneten Batteriezellblock.

Method for estimating state of charge of battery e.g. lithium-ion battery used in motor car, involves dividing electrochemical cells of battery into several cell groups, so that state of charge of battery is estimated

The battery is provided with n number of electrochemical cells (210) which is divided into several cell groups (220,222,224,226), so that state of charge of battery is estimated.

Verfahren zur Herstellung einer elektrochemischen Zelle und Batterie mit einer Anzahl dieser elektrochemischen Zellen

Ein Verfahren zur Herstellung elektrochemischer Zellen für eine Batterie weist die Schritte auf: (S1) Erfassen von Parameterdaten (DPar.) einer individuellen zu untersuchenden elektrochemischen Zelle zur Bestimmung mindestens eines nachfolgenden Behandlungsschrittes (S5) für die individuelle elektrochemische Zelle, (S2) Übermitteln der Parameterdaten (DPar.) an eine Steuereinheit, (S3) Zuweisen der elektrochemischen Zelle zu den Parameterdaten (DPar.), vorzugsweise Abspeichern der Parameterdaten (DPar.) zu der elektrochemischen Zelle, (S4) Bestimmen mittels der Steuereinheit, ob für die den Parameterdaten zugewiesene elektrochemische Zelle eine vorbestimmte Beziehung der Parameterdaten (DPar.) in Bezug auf vorbestimmte Parameterwerte (WPar., WPar.1, WPar.2, WPar.3, WPar.4, WPar.5) vorliegt, und Durchführen eines ersten vorbestimmten Behandlungsschrittes der elektrochemischen Zelle, wenn ein Vorliegen der vorbestimmten Beziehung der Parameterdaten (DPar.) in Bezug auf die vorbestimmten Parameterwerte ...

Modular aufgebaute Batterie und Verfahren zum Betreiben einer modular aufgebauten Batterie

Die Erfindung betrifft eine modular aufgebaute Batterie (100), aufweisend mehrere Batteriezellen (101) und eine Erfassungseinheit (20) zur Erfassung eines Betriebszustandes (I, U, C, T, R, SOH, SOC) der Batterie (100). Hierzu ist erfindungsgemäß ein Aktuator (40) vorgesehen, um einen Druck (P) in der Batterie (100) in Abhängigkeit des erfassten Betriebszustandes (I, U, C, T, R, SOH, SOC) der Batterie (100) einzustellen.

Schnellladeverfahren

Die vorliegende Erfindung betrifft ein Verfahren zum Schnellladen eines Batteriesystems, das eine Mehrzahl von Lithiumionenzellen umfasst, wobei Einheiten aus einzelnen Zellen oder aus Blöcken parallel geschalteter Zellen in Reihe geschaltet sind, und weiterhin Mittel zum Messen der Spannung und zumindest einer Komponente der Impedanz dieser Zelleneinheiten vorgesehen sind, ausgehend von einem anfänglichen Ladezustand SOC0auf einen vorbestimmten Ziel-Ladezustand SOCZiel, in dem optimierte Schnelllade-Bedingungen unter Einsatz von Impedanzmessungen bzw. Impedanzspektroskopie (EIS) ermittelt werden. Ein weiterer Gesichtspunkt der Erfindung betrifft ein Batteriesystem, in dem das Verfahren implementiert ist.

Batteriesystem mit in einem Batteriestrang angeordneten Batteriemodulen und Verfahren zur Ermittlung zumindest eines Betriebsparameters eines Batteriemoduls des Batteriesystems

Es wird ein Verfahren zur Ermittlung zumindest eines Betriebsparameters eines Batteriemoduls (31) eines Batteriesystems (40) bereitgestellt, dessen Batteriemodule (31) die in zumindest einem Batteriestrang angeordnet sind und durch Ansteuerung (43) selektiv dem Batteriestrang zugeschaltet und in dem Batteriestrang elektrisch leitend überbrückt werden können. Dabei wird bei einer Zuschaltung oder Abschaltung eines Batteriemoduls (31) ein sich in Antwort auf das Zuschalten oder Abschalten ergebender Verlauf der Batteriemodulspannung und des Batteriemodulstroms des Batteriemoduls (31) bestimmt. Ferner wird basierend auf den bestimmten Verlauf eine Berechnung des Betriebsparameters für das jeweilige Batteriemodul (31) durchgeführt wird. Ferner wird ein entsprechendes Batteriesystem (40) bereitgestellt, das zuschaltbare und abschaltbare Batteriemodule (31) sowie entsprechende Messmittel (41), Ansteuerungsmittel (42) und Auswertemittel (44) aufweist und zur Durchführung des Verfahrens eingerichtet ...

Diagnoseverfahren für eine Mehrzahl von elektrisch parallel schaltbaren elektrochemischen Energiespeichern

Diagnoseverfahren für eine Mehrzahl von elektrisch parallel schaltbaren elektrochemischen Energiespeichern.

Verfahren zum Betrieb eines Batteriesystems

Die Erfindung betrifft ein Verfahren zum Betrieb eines Batteriesystems mit mehreren Batteriezellen, umfassend folgende Schritte: Bestimmung der Ausgangsspannungen der einzelnen Batteriezellen zu einem Startzeitpunkt; Ermittlung einer mittleren Zellenspannung aus den bestimmten Ausgangsspannungen der Batteriezellen; Klassifizierung von Batteriezellen, deren Ausgangsspannung zum Startzeitpunkt höher als die mittlere Zellenspannung ist, als gute Zellen; Klassifizierung von Batteriezellen, deren Ausgangsspannung zum Startzeitpunkt geringer als die mittlere Zellenspannung ist, als schlechte Zellen; Übertragung einer Energiemenge von mindestens einer guten Zelle auf mindestens eine schlechte Zelle bis zu einem Endzeitpunkt, wobei die Energiemenge derart bemessen ist, dass zum Endzeitpunkt die Ausgangsspannung der mindestens einen schlechten Zelle höher als die mittlere Zellenspannung ist.

Arrangement with battery system for providing electric energy to a vehicle

A method of operating a battery system for providing electric energy to a vehicle wherein · sensor signals representing physical quantities of individual cells 13 and/or individual modules 12 of at least one battery of the battery system are generated, · the sensor signals are transferred to first and second system controllers 15a, 15b, · both of the first and second system controllers evaluate the sensor signals and control the battery system, depending on corresponding evaluation results, · the first and second system controllers 15a, 15b operate in combination with respective monitoring devices 17a, 17b, · the first monitoring device 17a monitors an operation of the second system controller 15b and the second monitoring device 17b monitors an operation of the first system controller 15a, · depending on monitoring results of the first monitoring device (17a) and of the second monitoring device (17b), the battery system is controlled.

BATTERY TESTING

The invention relates to the field of battery testing. In battery installations such as may be used for emergency power supplies or for computer installations, a plurality of cells are used, each of which needs to be periodically checked for the general condition of charge storage capability, during routine maintenance. This requires checking the voltage and current of each cell over a period of time and involves individually disconnecting each cell from the battery. The present disclosure concerns a system for testing a battery having a plurality of cells. The system comprises a plurality of modules (10) connected to the cells (C) of the battery, an assignment unit (20), a decoder (30), a voltmeter (40), a computer station (50) for controlling the system, and display means (80) for displaying test results of the battery. The modules are connected with the battery cells through a plurality of leads (11) without the need for disconnecting each cell of the battery. The principal use of the ...

Battery system and method

Battery state of charge evaluator

A microprocessor based monitoring system for the traction battery 10 of an electric vehicle evaluates the state of charge and displays it on a dashboard mounted meter 64 and interfaces with a traction motor control system 20. The battery is divided into nine 24V sub-packs. During both discharge and recharge, the battery current is integrated to obtain a value representing the charge withdrawn. During discharge, the current is adjusted to compensate for the rate of discharge. During the first part of each discharge, the state of charge is calculated from the charge withdrawn value and from a value representing the charge storage capacity of the battery 10. During the last part of discharge, the state of charge is evaluated from the voltage of the sub-pack having the lowest voltage after compensating for polarization voltage. Polarization voltage is calculated as a function of time and of battery current. The state of charge value obtained from the lowest sub-pack voltage is also used to ...

Method and apparatus

Battery sensor arrangement and method of balancing batteries

Battery sesnor arrangement and method of balancing batteries

Method and apparatus

A method and apparatus for detecting defective cells within a battery

Battery management system and monitoring devices

A monitoring device comprises circuitry to obtain measurements of one or more pins 116 of a battery system, the circuitry comprising a circuit for monitoring current. The current monitoring circuit detects the absence or disruption of an electrical connection between a battery parameter sensor and the pin. The current monitoring circuit comprises: a differential amplifier 112, with a voltage reference Vref connected to its first input; at least one transconductance 213a, 213b with an output connected to the second input of the differential amplifier and an input connected to an output of the differential amplifier; a current source 214 connected to an output of the transconductance; and an output 125 connected to an output of the transconductance. The transconductance may be a field effect transistor. If there is an open circuit voltage fault on the pin, the current monitor detects this. Also disclosed are: a regulation system for a power on reset; a monitoring device using a received timing ...

Method of ground fault detection in an electric work vehicle

PROCEDURE FOR THE MONITORING OF THE OPERATING CONDITION OF A GAS CELL PILE

PROCEDURE AND SWITCHING CONFIGURATION FOR THE MEASUREMENT OF ELECTRO-CHEMICAL CELLS IN A SERIES INTERCONNECTING

SIGNALING SYSTEM

PROCEDURE FOR THE MONITORING OF THE OPERATING CONDITION OF A GAS CELL PILE

MONITORING OF THE BATTERY CELL TENSION

PROCEDURE FOR THE MONITORING OF THE OPERATING CONDITION OF A GAS CELL PILE

MECHANISM FOR SUPERVISING THE ZELLENSPANNUNG

Apparatus for calibrating a battery simulator

Die vorliegende Erfindung betrifft eine Vorrichtung (1) zum Kalibrieren eines Batteriesimulators (2) mit einem Eingang (10) und einem Ausgang (12), wobei zwischen Eingang (10) und Ausgang (12) ein Strompfad (14) mit einer Vorrichtung (18) zum Messen der Stromstärke und mit zumindest einem Kondensator (16) vorgesehen ist. Weiters kann ein Spannungspfad (15) zwischen Eingang (10) und Ausgang (12) mit einer Vorrichtung (19) zum Messung der Spannung und/oder ein Stromwandler (20), in dessen Sekundärstrom die Vorrichtung (18) zum Messen der Stromstärke geschaltet ist, vorgesehen sein. Wenn ein Batteriesimulator (2) an die Vorrichtung (1) angeschlossen wird, kann dieser den Kondensator (16) laden und anschließend der Kondensator (16) den Batteriesimulator (2) laden, während die Stromstärke und Spannung gemessen werden und anhand dessen die internen Messgeräte (32, 34) des Batteriesimulators (2) kalibriert werden.

Vorrichtung zur Symmetrierung von in Serie geschalteten Batterien und Kondensatoren

Die Symmetrierung von in Serie geschalteten Batterien und Kondensatoren ist sehr wichtig, damit es nicht zur Zerstörung von Zellen oder Elementen kommt. Fig. 1 zeigt drei in Serie geschaltete Batterien (UB1, UB2, UB3). An die mittlere (UB2) sind an der positiven und der negativen Klemme je eine Spule (L1, L2) angeschlossen. Weiters besteht die Schaltung aus drei aktiven Schaltern (T1, T2, T3) und zwei passiven Schaltern (D1H, D2H) deren Kathoden mit dem Pluspol verbunden sind und zwei passiven Schaltern (D1L, D2L), deren Anoden mit dem Minuspol verbunden sind. Werden strombidirektionale aktive Schalter verwendet, so können die Dioden weggelassen werden. Weiters kann jede der Spulen (L1, L2) jeweils noch durch eine weitere Wicklung für Messzwecke versehen sein. Es können die Spulen (L1, L2) auch magnetisch miteinander gekoppelt sein. Weiters besteht die Möglichkeit, dass die Spulen (L1, L2) in je zwei magnetisch miteinander gut gekoppelte Teilspulen (LiA, LiB) aufgeteilt werden.

DEVICE FOR THE MONITORING OF A BATTERY DURING THE SHOP AND UNLOADING

PROCEDURE AND DEVICE FOR SUPERVISING A SELECTED GROUP OF GAS CELLS OF A HIGH TEMPERATURE GAS CELL PILE

CELL VOLTAGE MONITOR FOR A GAS CELL PILE

PROCEDURE FOR THE MONITORING OF THE OPERATING CONDITION OF A GAS CELL PILE

PROCEDURE FOR THE MONITORING OF THE OPERATING CONDITION OF A GAS CELL PILE

PROCEDURE FOR THE MONITORING OF THE OPERATING CONDITION OF A GAS CELL PILE

PROCEDURE FOR THE MONITORING OF THE OPERATING CONDITION OF A GAS CELL PILE

PROCEDURE FOR THE MONITORING OF THE OPERATING CONDITION OF A GAS CELL PILE

PROCEDURE FOR THE MONITORING OF THE OPERATING CONDITION OF A GAS CELL PILE

PROCEDURE FOR THE MONITORING OF THE OPERATING CONDITION OF A GAS CELL PILE

PROCEDURE FOR THE MONITORING OF THE OPERATING CONDITION OF A GAS CELL PILE

PROCEDURE FOR THE MONITORING OF THE OPERATING CONDITION OF A GAS CELL PILE

PROCEDURE FOR THE MONITORING OF THE OPERATING CONDITION OF A GAS CELL PILE

PROCEDURE FOR THE MONITORING OF THE OPERATING CONDITION OF A GAS CELL PILE

PROCEDURE FOR THE MONITORING OF THE OPERATING CONDITION OF A GAS CELL PILE

PROCEDURE FOR THE MONITORING OF THE OPERATING CONDITION OF A GAS CELL PILE

Power tool battery pack with wireless communication

Trigger pull tracking, charge time estimation, and other features for a power tool battery pack with wireless communication. A battery pack system includes a power tool battery pack and a processor. The battery pack includes a plurality of cells and a voltage sensor connected to the plurality of cells. The processor is in communication with the voltage sensor that detects a voltage across the plurality of cells using the voltage sensor. The processor further converts the voltage across the plurality of cells to a state of charge; determines a charge rate of a charger charging the battery pack; and determines a conversion factor based on the charge rate. The processor then generates a time to full charge of the battery pack based on the state of charge, the charge rate, and the scalar conversion factor. The processor may further generate current traces for the battery pack. 10616758_1 (GHMattes) P105504.AU C) CO) C) C -m m - C CLo C)N Lr(Ni (NJ ...

METHOD AND APPARATUS FOR MONITORING FUEL CELL VOLTAGES

Fault-tolerant battery system employing intra-battery network architecture

System and method of battery life estimation

A device which includes a plurality of substantially identical batteries coupled via switching circuits to a power bus. Control circuits coupled to the batteries and the switching circuits to provide electrical energy to the bus from each of the batteries during a sequence of predetermined time intervals wherein one of the batteries provides electrical energy to the bus during a greater percentage of each tie intervals than the others of the plurality. Estimating remaining battery life of the others of the plurality in response to sensing that the one battery is substantial discharged. oCo -- co~ CI) E- 2 - ~ - - - - c C, > cuc~. CI) + I cu o ~om co 1* cu m ...

Apparatus for detecting cell reversal in rechargeable batteries

Method and apparatus for monitoring fuel cell performance

Battery energy monitoring circuits

Energy monitoring and charging system

METHOD AND SYSTEM TO MEASURE SERIES-CONNECTED CELL VOLTAGES USING A FLYING CAPACITOR

A method and system for measuring voltage of individual cells connected i n series includes a pair of busses connectable to the cells and a flying cap acitor connectable to the busses. The capacitor stores the charge of one of the cells such that an analog-to-digital converter (ADC) connected to the ca pacitor may process an accurate representation of the voltage of the cell be ing measured. In order to prevent electrical interference with the capacitor and the ADC, the charge on the busses is reduced prior to measurement by th e ADC.

CHARGING STATION FOR CHARGING ELECTRICAL VEHICLES

A charging station (20) adapted for charging electrical vehicles (100) and comprising at least one battery pack (30). The battery pack (30) comprises a plurality of batteries (1) being coupled in series and a control unit (40) adapted for controlling each of the batteries (1) of the plurality of batteries individually. Each battery (1) comprises at least one battery cell (2) with a battery inlet line (8) and a battery outlet line (9), an electrical circuit element (5) arranged to lead from the battery inlet line (8) to the battery outlet line (9) such as to form an electrical path leading around the battery cell (2), and one switch(6 or 7).The one switch (6 or 7) is arranged in one of the battery outlet line (8)and the battery inlet line (9)and is switchable between a first position and a second position. The control unit (40) is connected to the one switch (6 or 7) of each battery (1) and is adapted for controlling the one switch (6 or 7) to switch between the first position, in which ...

DEVICE FOR MONITORING ELECTRICITY GENERATION AND METHOD FOR MONITORING ELECTRICITY GENERATION

... [Problem] Detecting negative voltage occurrence, even when using the method of monitoring electricity generation status based on the voltage of each of multiple cells. [Means for Solving the Problem] If a possibility of negative voltage occurring is detected based on the measured voltage measured for each of multiple cells, the hydrogen flow rate is increased (the step S710). Following this, the measured voltage is acquired (the step S715), and if the measured voltages reaches above the second voltage V2 (the step S720, YES), it is judged that hydrogen deficiency occurred (the step S750), causing negative voltage. Meanwhile, if the measured voltage did not reach above the second voltage V2 (the step S730, YES, or the step S740, YES), it is judged that air deficiency occurred (the step S770).

SYSTEM AND METHOD FOR MONITORING A DC POWER SYSTEM

The present application discloses an integrated direct current (DC) subsystem monitoring system for monitoring and reporting status of a utility substation, the DC subsystem monitoring system having the ability to actively monitor and report on changes in the float current and current capacity of the system, as well as to monitor for ground faults.

SHORT DETECTION IN BATTERY CELLS

Internal shorts and other failures in lithium-ion battery cells may be detected during balancing of the battery cells. A counter may-be used to detect when a battery cell is behaving differently than other battery cells by balancing more or less frequently. The counter may increment each time a battery cell is balanced to the other battery cells. A misbehaving battery cell may be flagged, when the counter exceeds a threshold value, for safety checks before an overheating event occurs. This misbehaving battery cell may be faulty due to an internal short. If the faulty battery cell is not corrected by replacement with a different battery cell or corrected by a user resetting the counter, the misbehaving battery cell may be disconnected to prevent the overheating event.

METHOD AND APPARATUS FOR COMPARING FUEL CELL VOLTAGE

METHOD AND APPARATUS FOR COMPARING FUEL CELL VOLTAGE This invention relates to a method and apparatus for identifying voltage in cells arranged in series. More particularly, this invention relates to a method and apparatus for comparing voltages in the cells of an electrical series stack of fuel cells and identifying specific fuel cells or groups which are performing at less than acceptable levels. A method of monitoring the performance of one or more fuel cells in a plurality of electrical series connected fuel cells which comprises dividing the fuel cells into at least two groups, measuring the voltage across each group of fuel cells and comparing the measured voltage with a pre-determined standard voltage for the number of cells in the group.

BATTERY CAPACITY MEASURING DEVICE

The invention relates to a method, a control unit (10) and a battery system for calculating a resulting capacity of a battery (15) during operation. The possibility to estimate the remaining energy in a battery being unloaded is useful to determine the remaining operational time of the battery before the battery must be recharged or replaced. The invention comprises a compact and fast method, divided into two parts. A first part generates a table from at least two measured discharge curves. Certain calculations are then made and the final values are normalized before they are entered into the table. A second part comprises a supervision part in which the voltage, discharge current and discharge time of the battery are measured and registered at certain intervals. By utilizing the table and the measured values a resulting capacity is calculated, which is adjusted in a subsequent step by iteration of the resulting capacity and the average final voltage of the battery.

Battery pack health status evaluating device based on big data and evaluating method

METHOD AND SYSTEM FOR REAL-TIME DIAGNOSIS OF THE OPERATING STATE OF AN ELECTROCHEMICAL SYSTEM, AND ELECTROCHEMICAL SYSTEM INCORPORATING THE DIAGNOSTIC SYSTEM

Procédé pour diagnostiquer en temps réel l'état de fonctionnement d'un système électrochimique comprenant un empilement de cellules, ce procédé comprenant des étapes pour réaliser des mesures de tension desdites cellules. Ce procédé comprend en outre : - un traitement des mesures de tension (61) ainsi réalisées en temps réel pour en extraire des formes d'onde spécifiques (40), - une transformation de ces formes d'onde spécifiques pour en générer des points (65) spécifiques du fonctionnement temps-réel du système électrochimique, et - une comparaison de ces points spécifiques du fonctionnement temps-réel et de points (75) spécifiques d'un fonctionnement hors-ligne du système électrochimique qui sont issus d'une transformation de formes d'onde spécifiques (74) extraites de mesures de tension (78) effectuées hors ligne sur alors que le système électrochimique est placé dans des états de fonctionnement connus incluant des états de défaut, de façon à produire des informations (69) sur l'état ...

METHOD FOR DETERMINING THE MAXIMUM DISCHARGE CURRENT APPLICABLE TO LITHIUM ION CELL WITH A GIVEN TEMPERATURE

Method and system for determining the health status of a battery of a motor-based land vehicle

BATTERY CHECK APPARATUS FOR BATTERY MODULE

Battery stack radio monitoring system for cotrolling cell power output

BATTERY FOR MOBILE DEVICE AND ELECTRONIC SYSTEM HAVING THE SAME

배터리 관리 시스템 및 배터리 셀 센싱방법

... 본 발명의 일 실시예는 직렬 연결된 복수의 배터리 셀 중 연속하는 하나 이상의 배터리 셀에 각각 대응하는 둘 이상의 배터리관리유닛, 및 상기 각 배터리 셀의 충전전압에 대한 센싱을 실시하기 위한 중앙처리유닛의 센싱지령을 상기 둘 이상의 배터리관리유닛으로 전달하기 위한 요청라인과, 상기 둘 이상의 배터리관리유닛의 신호를 상기 중앙처리유닛으로 전달하기 위한 응답라인을 포함하되, 상기 각 배터리관리유닛은, 상기 각 배터리 셀의 충전전압에 대한 측정치에 기초하여 소정의 센싱조건에 대응한 센싱데이터를 생성하고, 상기 응답라인을 통해 다른 배터리관리유닛으로부터 센싱데이터를 수신하면, 상기 생성된 센싱데이터와 상기 수신된 센싱데이터 중 상기 센싱조건에 대응하는 어느 하나를 선택하고, 상기 응답라인을 통해 또 다른 배터리관리유닛 및 상기 중앙처리유닛 중 어느 하나에 상기 선택된 센싱데이터를 송신하는 배터리 관리 시스템을 제공한다.

Battery-state monitoring circuit and battery device

To provide a battery-state monitoring circuit that detects a disconnection between a battery and a power supply terminal or a ground terminal, and a battery device. A voltage detection circuit is configured as follows. A voltage detection circuit is provided between a power supply terminal and an intermediate terminal or between intermediate terminals. For example, when a disconnection between a battery 21 and a power supply terminal 11 occurs, the power supply terminal 11 is pulled down to a voltage of a second intermediate terminal 13 by a constant current circuit 15 so as to detect the disconnection by the voltage detection circuit 34.

A communication circuit for communicating and transmitting data between devices

A communicating circuit is used for transmitting data between a plurality of devices, which have non-common ground voltages. The communication circuit comprises a plurality of transmitting input nodes coupled to the devices, respectively, a transmitting current path, a plurality of receiving output nodes coupled to the devices, respectively, and a receiving current circuit. The transmitting current path is coupled to the transmitting input nodes. The current through the transmitting current path is varied according to the input signal of the transmitting input nodes. The receiving current path is coupled to the receiving output nodes. The current through the receiving current path is varied according to the current of the transmitting current path such that data is transmitted from the transmitting input nodes to the receiving output nodes.

Method for charging exchangeable energy stroage devices positioned in a device-exchange station, sever, and method for mangaing a device-exchange station

The present disclosure relates to methods and associated systems for charging exchangeable energy storage devices positioned in a device-exchange station. The method includes, for example, (1) receiving demand information; (2) determining a charging plan for the device-exchange station at least partially based on a state-of-charge (SoC) of each of the exchangeable energy storage devices positioned in the device-exchange station, the demand information, and a charging threshold for each of the exchangeable energy storage devices positioned in the device-exchange station; (3) generating a charging command for each of the exchangeable energy storage devices based on the charging rule for each of the exchangeable energy storage devices; and (4) transmitting the charging command to the device-exchange station.

CELL VOLTAGE DETECTION CIRCUIT, AND METHOD OF DETECTING CELL VOLTAGE

Battery control apparatus

A battery control apparatus is provided which can keep an inter-terminal voltage of each single cell within a permitted range while permitted power is controlled in units of a battery pack. The battery control apparatus of the invention restricts the permitted power of the battery pack according to a degree of closeness of a close circuit voltage of the single cell to an upper limit or a lower limit of the permitted range.

MEASURING APPARATUS AND TESTING APPARATUS

A measuring apparatus includes: N pairs of probes that are respectively connected to a positive electrode and an external member of N rechargeable batteries that have a capacitance connected in parallel between the positive electrode and the external member; a scanner that selectively switches to one pair of probes out of the N pairs; a measuring apparatus that measures the voltage between the selected probes; and a controller. A plurality of resistance configurations to be connected between each pair of probes are provided. After a standby time has elapsed in a state where the N pairs of probes are connected to the positive electrodes and external members of the N rechargeable batteries, the controller outputs control signals to the scanner to successively switch to each pair of probes and causes the measuring apparatus to measure the voltage between the selected probes every time switching is performed. 1. A measuring apparatus comprising:a plurality of pairs of probes that are each connected to a pair of voltage measurement target locations on a plurality of measured objects that each have an equivalent of an internal capacitance connected in parallel between the pair of voltage measurement target locations;a switch that selectively switches to one pair of probes out of the plurality of pairs of probes according to a selective switching signal;a meter that measures a voltage between the probes in the pair of probes that have been selectively switched to according to the selective switching signal; anda controller that outputs the selective switching signal to the switch,wherein a plurality of resistance configurations to be connected between each pair of probes are provided, andafter a predetermined standby time has elapsed in a state where the plurality of probes have been connected to each pair of voltage measurement target locations on the plurality of measured objects, the controller outputs the selective switching signal to the switch to cause the switch to ...

Battery voltage measurement system

In one embodiment of the present invention, a system is provided or measuring the voltages of the traction batteries of an electric vehicle. The system includes switches provided to switchably couple the batteries individually to an amplifier. The system also includes switches provided to assure that the same polarity is always provided to the amplifier; a single-ended amplifier can thus be used. The system includes an analog-to-digital converter coupled in communication with the output of the amplifier, and an optical coupler which couples the output of the analog-to-digital converter to the low-voltage portion of the electric vehicle's electrical system.

Method of controlling battery condition of self-generation electric vehicle

This invention provides a method of controlling condition of an assembled battery mounted in a self-generation electric vehicle. The method is comprised of the following steps: detecting battery voltage and battery current repeatedly; estimating a constant-power voltage on the basis of the battery voltage and the battery current; setting a target voltage; comparing the constant-power-discharge voltage with the target voltage to provide a difference therebetween; and charging or discharging the battery to reduce the difference when the battery is not operated. The constant-power voltage is set as a function of a remaining capacity of the battery when a preset constant power is charged to or discharged from the battery.

Method and system for unobtrusively measuring physical properties in electrochemical processes

Disclosed is a method and system for unobtrusively measuring physical properties in electrochemical processes occurring in a predefined volume, such as the state of charge in an electrochemical battery. The invention provides for a coil (22) or (42) positioned relative to the predefined volume to minimize the reluctance path between the coil and the electrochemical process, with the winding axis of the coil generally transverse to a surface bounding the predefined volume. In this position, an alternating current is applied to the coil to generate an oscillatory magnetic field. Preferably, the coil includes a core (24) or a backing plate (46) for concentrating the magnetic field in a direction towards the process in the predefined volume. The physical properties are determined based upon a measurement of the electrical complex impedance of the coil, and data correlating the physical properties of the process with the electrical complex impedance of the coil.

BATTERY OF MODULAR CONSTRUCTION HAVING IMPROVED SAFETY PROPERTIES

A battery of modular construction that stores electrical energy includes a battery housing, a module assembly including at least two battery modules, each with at least one positive and at least one negative electrode, and a pressing means. A method of safety operation of the battery includes equipping the battery with at least one safety means that triggers a reduction in the mechanical pressure exerted onto the battery modules when there is a defect in at least one of the battery modules.

Battery apparatus for controlling plural batteries and control method of plural batteries

Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices.

BATTERY MANAGEMENT SYSTEM

... a plurality of third and fourth measurement terminals positioned at positions on the first bus bar, which correspond to one of ends of each of the first and second battery cells, respectively; a cell voltage measuring unit configured to measure a cell voltage of the cell group by using the first and second measurement terminals; a voltage drop measuring unit configured to measure an error voltage corresponding to a resistance value of the first bus bar by using the third and fourth measurement terminals; and a battery management unit configured to calculate a corrected cell voltage by using the cell voltage and the error voltage.

Circuits and methods for cell number detection

A circuit used for determining a cell number of several battery cells. The circuit includes a detection block and a controller, and operates in a first detection mode and a second detection mode. The detection block is coupled to each of the battery cells. In the first detection mode, the detection block provides a terminal voltage signal indicative of a terminal voltage of a battery cell. In the second detection mode, the detection block provides a cell voltage signal indicative of a cell voltage of the battery cell. The controller compares the terminal voltage signal with a first threshold in the first detection mode and compares the cell voltage signal with a second threshold in the second detection mode, and provides a cell count signal indicative of the cell number based on the terminal voltage signal and the cell voltage signal.

Secondary battery device and vehicle

According to one embodiment, a secondary battery device includes a first assembled battery including a plurality of secondary battery cells, a second assembled battery including a plurality of secondary battery cells and connected in series to a low-potential terminal of the first assembled battery, a disconnecting module capable of mechanically switching connection between the first assembled battery and the second assembled battery, a voltage measurement circuit configured to measure voltages of the plurality of secondary battery cells of the second assembled battery, a first power source wiring connected between a high-potential terminal of the second assembled battery and the voltage measurement circuit, a second power source wiring connected between a low-potential terminal of the second assembled battery and the voltage measurement circuit, and a filter connected between the first power source wiring and the second power source wiring.

Determination of the internal resistance of a battery cell of a traction battery while using inductive cell balancing

The invention relates to a method and a device for determining the internal resistance of a battery cell of a battery, in particular a traction battery, in which an inductive cell balancing for balancing the charging states of the battery cells is carried out, whereby the charge removed from or supplied to a battery cell is determined by a determination of the current flowing during the removal or supply of the charge. According to the invention, a first control module is provided for determining a first voltage applied to the battery cell and a first current flowing from or to the battery cell at a first time during removal or supply of the charge and for determining a second voltage applied to the battery cell and a second current flowing from or to the battery cell at a second time during removal or supply of the charge. Further provided is a calculating unit for calculating the internal resistance of the battery cell on the basis of the quotients of the difference of the second voltage and the first voltage and the difference of the second current and the first current.

System and method for detection of open connections between an integrated circuit and a multi-cell battery pack

An apparatus comprises an integrated circuit and an open connection detection circuit within the integrated circuit. The integrated circuit includes a plurality of inputs for connecting with a plurality of outputs of a multi-cell battery pack. The open connection detection circuit within the integrated circuit detects an open connection on at least one of the plurality of inputs from the multi-cell battery and generates a fault condition responsive thereto.

Identifying and amerliorating a deteriorating condition for battery networks in-situ

A temperature is measured for each terminal of the battery unit. The magnitude and sign of a temperature differential is calculated from the temperatures. The temperature differential is then correlated to a deteriorating condition of the battery unit.

Methods and apparatuses for electrochemical cell monitoring and control

Battery sub-arrays are configured for electrical and mechanical coupling with each other to form a multi-cell battery. A sub-array may be an individual cell or a group of cells. Each sub-array includes a bypass switch to connect the sub-array within the multi-cell battery or bypass the sub-array. Monitoring and control circuitry controls the bypass switch in response to voltage measurements, temperature measurements or a combination thereof for the sub-array. Each sub-array is contained in a holder including a housing and a thermal container encompassing a substantial portion of the housing. The housing includes a cell cavity, a sensor cavity, and a circuit cavity. Positive terminals and negative terminals are positioned on sides of the holder such that when holders are mechanically abutted in an array, various electrical connections can be made to connect the cells in series, parallel, or a combination thereof.

Voltage measurement apparatus

A resistor element that is coupled between each of voltage measurement points of a measurement object and a voltage measurement circuit is further coupled to a path of a constant current between a power supply side constant current circuit and a ground side constant current circuit. By controlling the operation of the power supply side constant current circuit and the ground side constant current circuit with a control circuit, the control circuit switches the switch circuit on and off to prevent a voltage drop due to an electric current that turns on the switch circuit.

Measuring system for cells in a fuel cell stack

The present invention concerns an electrochemical system ( 100 ) including a stack of series connected electrochemical units ( 102 ). The system is controlled by a control circuit ( 104 ) and includes a plurality of differential amplifiers ( 114 ), each connected by two inputs to the terminals of an electrochemical unit, in order to supply a voltage representative of the potential difference present between the terminals of said electrochemical unit. Each representative voltage is sent to a control unit ( 106 ) arranged for converting said representative voltage into a numerical value transmitted to the control circuit. The system further includes, between each differential amplifier and the control unit, a buffer means ( 116 ) controlled by the control circuit. The buffer means is capable of saving the voltage representative of the potential difference present between the terminals of the electrochemical unit to which it is connected. The voltage is saved simultaneously by all of the buffer means.

Electrochemical cell balancing circuits and methods

A system for charging and/or discharging electrochemical cells of a pack that provides power to a load of an apparatus, such as a vehicle. The system can include a circuit coupled to an electrochemical cell of the pack and configured to charge and/or discharge the electrochemical cell at a plurality of times occurring throughout a period in which the apparatus is dormant. The system can have a lower power draw. The system can have automatic timeouts to stop charging and/or discharging the cells when an auxiliary battery is disconnected.

Battery Phase Meter to Determine Internal Temperatures of Lithium-Ion Rechargeable Cells Under Charge and Discharge

Methods and systems to determine an internal temperature of a rechargeable lithium-ion cell based on a phase shift of the cell. Internal cell temperature may be determined with respect to an internal anode temperature and/or an internal cathode temperature. Internal anode temperature may be determined based on a phase shift of a frequency within a range of approximately 40 Hertz (Hz) to 500 Hz. Internal cathode temperature may be determined based on a phase shift of a frequency of up to approximately 30 Hz. A temperature sensor as disclosed herein may be powered by a monitored cell with relatively little impact on cell charge, may be electrically coupled to cell but housed physically separate from the cell, and/or may monitor multiple cells in a multiplex fashion. A rate of change in phase shift may be used to initiate pre-emptive action, without determining corresponding temperatures.

Semiconductor circuit, battery cell monitoring system, computer readable medium storing diagnostic program and diagnostic method

The present invention provides a semiconductor circuit including: a comparator section that compares discharge sections, each including a first signal line connected to a high potential side of each of a plurality of battery cells that are connected in series, a second signal line connected to a low potential side of each of the plurality of battery cells, a resistance element provided between the first signal line and the second signal line, and a discharge switching element connected in series to the resistance element, wherein the comparator section compares a threshold voltage, set according to a potential difference between a potential of the first signal line and a potential of the second signal line, with a voltage according to a potential between the resistance element and the discharge switching element.

Reliable signaling of fault conditions in battery systems with series-connected cells

A system is used with a plurality of modules, each module requiring galvanic isolation from the other modules. Galvanic isolators are employed, each having an input and an output, the output galvanically isolated from the input, the output responsive to the input according to a response characteristic of the isolator. Each module has, a respective first isolator and a respective second isolator. The input of each respective first isolator and each respective second isolator for each module is disposed controllably to receive an activation signal from the module indicative of a module fault to be annunciated or to receive a test signal from the module, the test signal being smaller than the activation signal. The outputs of the respective first isolators are aggregated to a first node and the outputs of the respective second isolators are aggregated to a second node. A selection circuit selects from the first node and the second node, yielding a fault signal output when the selected node satisfies a predetermined condition. An analog-to-digital converter is coupled with each of the nodes, the analog-to-digital converter disposed to sense an output from one of the isolators indicative of its response characteristic in the event of a test signal being applied to the isolator.

Residual quantity display system

A microcomputer in a device body operates so as to store every update of a maximum discharge current value (I MAX (A)) of a secondary battery (the whole plurality of cells), and operates so as to indicate the ratio value of the remaining capacity defined in a remaining capacity definition table with respect to a discharge voltage value (V (V)) of the secondary battery while reducing the ratio value in accordance with the maximum discharge current value (I MAX (A)) when obtaining the discharge voltage value (V (V)) from a protection circuit.

Battery voltage detector and battery voltage detecting method

A battery voltage detector includes: a voltage detection circuit; a voltage processor; and a power voltage. The voltage detection circuit is configured to detect a cell voltage of a battery cell. The voltage processor is configured to perform analog-to-digital conversion on the cell voltage with a predetermined period to collect cell voltage detection data. The power voltage monitoring circuit is configured to determine whether or not an instantaneous variation of an externally-supplied power voltage occurs, and output an instantaneous variation detection signal indicating a result of detection to the voltage processor. If the voltage processor detects based on the instantaneous variation detection signal that the instantaneous variation of the externally-supplied power voltage occurs, the voltage processor is configured to delete the cell voltage detection data that is the newest.

Battery Pack Detection Circuit

A battery pack detection circuit that can detect cold or false welding, charging status, and discharging status is disclosed. The battery pack detection circuit comprises a driving circuit electrically connected to a switch unit outside the battery pack detection circuit; a voltage detection and comparison circuit electrically connected to a multi-cell battery pack having a plurality of battery cells outside the battery pack detection circuit, wherein the voltage detection and comparison circuit is configured to detect cell voltages across each of the battery cells under at least two circuit connection conditions and compare the differences in cell voltage with a predetermined value, wherein the differences in cell voltage are derived from a subtraction operation performed on the cell voltages measured under the at least two circuit connection conditions; and an interface and control unit configured to receive commands from a SMBUS and provide a signal to a detection load.

Channel Verification of Multiple Channels on One Chip

A battery monitoring system and method are disclosed. A battery monitor compares data in parallel register files. If voltage deviation above a certain threshold is detected in one register file, the system generates an alert that a fault exists upstream in the system. In order to better detect errors, the system may intentionally alter the voltages on the batteries to be monitored.

Device and method for determining deterioration of secondary battery

A secondary battery is implemented as an assembly of a plurality of battery modules. An ECU calculates a deterioration indicator quantitatively indicating a degree of deterioration of a battery module for each of the plurality of battery modules, and detects as a module to be replaced, a battery module of which deterioration indicator has reached a prescribed replacement level. The ECU further extracts a module to additionally be replaced, which should be replaced simultaneously with the module to be replaced above, from battery modules of which deterioration indicator has not reached the replacement level, among the plurality of battery modules.

Detecting an open wire between a battery cell and an external circuit

A device for detecting an open wire coupled to a battery includes a first pin and a second pin. The first pin is coupled to a positive terminal of a battery cell through a connection circuit. The second pin is coupled to a negative terminal of the battery cell through the connection circuit. A path of a current through the connection circuit changes in response to a wire between the connection circuit and the battery cell becoming open, and a change in a detecting voltage across the first pin and the second pin indicates a change in the path.

Multi-cell thin film microbattery array

A rechargeable thin film microbattery cell array of at least four thin film microbattery cells is electrically connected together in parallel to provide power as a single battery power source. The array further comprises testing logic to determine if a microbattery cell has a microbattery cell voltage that is more than a predetermined percentage different from the voltage of the overall microbattery cell array or has an absolute voltage below a predetermined cutoff threshold, and logic to disconnect any microbattery cell from the microbattery cell array if the microbattery cell has a microbattery cell voltage that is more than a predetermined percentage different from the voltage of the overall microbattery cell array or has an absolute voltage below a predetermined cutoff threshold. Embodiments also comprise a Switch Capacitor DC-DC downconverter component that reduces the voltage potential to operate some or all functionalities located on the integrated circuit.

Voltage detection device for fuel cell

A voltage detection device includes voltage detection sections that measure cell voltages in the blocks, a control section, and (N−1) or less converters that raise the voltage, which is supplied from a DC power source, to a voltage of a driving power source for the voltage detection section. In a case where a voltage detected by at least one voltage detection section among the voltage detection sections which operate by the power supplied from the respective converters, exceeds a predetermined threshold value, the control section controls at least one voltage detection section among the voltage detection sections to operate using the cell voltage of each of the blocks as a driving power source and acquires the cell voltage in each of the blocks.

Assembled battery monitoring device, secondary battery apparatus, and vehicle

According to one embodiment, a monitoring device includes a power supply circuit which powered by an assembled battery including secondary battery cells, and a monitoring IC powered by the supply circuit. The monitoring IC comprises a coulomb counter circuit configured to measure internal amperage consumption, an IC internal power supply circuit powered by the power supply circuit to generate a power supply voltage for use for an internal operation, and a calculation module configured to calculate a set value for a power supply voltage generated by the IC internal power supply circuit so as to determine a first amperage consumption target value to be a first amperage consumption measured value measured at the first time interval by the coulomb counter circuit.

Battery pack and battery pack controller

A battery pack includes a plurality of battery units mutually connected in parallel, each including a cell group in which one or two or more secondary cells are connected in series, and a first current control element that is connected in series with this cell group, a first control means that controls the charging/discharging current for each battery unit by controlling the operation of the first current control element included in each of the battery unit; a voltage measurement means that measures the voltage of the cell group or cells included in each of the battery unit, and a diagnosis means that diagnoses a deterioration level or a fault of each battery unit on the basis of the voltage of the cell group or cells measured by the voltage measurement means.

Battery voltage monitoring apparatus

A battery voltage monitoring apparatus for monitoring an assembled battery voltage, the assembled battery including a plurality of battery cells, the battery voltage monitoring apparatus including a plurality of input terminals, the plurality of input terminals being respectively coupled to the plurality of battery cells through a potential measurement line, a comparator having a hysteresis characteristic and including a first terminal and a second terminal, the second terminal receiving a reference voltage, and a current source, one end of the current source being coupled between one of the plurality of the input terminals and the first terminal.

Advanced battery early warning and monitoring system

Systems, apparatuses and methods for detecting internal cell faults using online and real-time sensing techniques, and providing an accurate and reliable early warning for the incoming failure of battery cells hours or days prior to failure. A system is configured to perform real-time and direct measurement of battery cell parameters of temperature, voltage, and AC impedance through online sensing. These parameters may be simultaneously processed using advanced probabilistic and/or fuzzy logic-based algorithms to provide an early warning for the incoming failure of battery cells in a battery pack. This technology may safeguard the LIB battery packs while allowing them to operate at or near 100% capacity in both transportation and stationary applications.

Sensor arrangement and method of using the same

A sensor arrangement and method that may be used with a variety of different energy storage devices, including battery packs found in hybrid vehicles, battery electric vehicles, and other types of vehicles. An exemplary sensor arrangement includes a number of sensor units, a controller, and several connections, wherein two or more sensor units are coupled to each node of the battery pack and are coupled to the controller over different connections. An exemplary method is divided into two aspects: an error detection aspect and an error resolution aspect. Because the sensor arrangement provides multiple sensor readings for each node being evaluated, the method can enable the sensor arrangement to continue operating accurately and with redundancy even if it experiences a loss of one or more sensor units.

Battery module

A battery module is configured such that n series blocks 20, each having m cells 10 connected in series, are connected in parallel. Adjacent cells 10 are connected in parallel via a first fusible link 30. One end of each of the series block 20 is connected to an input/output terminal 50 via a second fusible link 40. The number m of the cells 10 and the number n of the series blocks satisfy the formulas (1) and (2): m ≦½[ V c /R c ·I f1 −R f1 /R c +3]  (1) n ≧( V c +I f2 ·R c )/[V c −( m −1) I f2 ·R c ]  (2) where V c and R c represent an electromotive voltage and an internal resistance of the cell 10, respectively; R f1 and I f1 represent a resistance and a fuse current of the first fusible link 30, respectively; and I f2 represents a fuse current of the second fusible link 40.

Supervisor monitoring system

A supervisor monitoring system for autonomous test supervision is presented. A system can comprise a first supervisor monitor (SM) and a second SM, each configured to simultaneously monitor one or more tests conducted by one or more testing apparatus. First and second SMs can be configured to verify the other's integrity throughout a testing procedure, providing a failsafe system. The first and second SMs can be interlocked so that if the first SM detects a fault at the second SM, the first SM can interrupt testing monitored at the first SM, and can also interrupt testing monitored at the second SM, and vice versa. An SM can be configured to control a safety relay configured to couple a power channel of a battery exerciser to a battery cell, and be configured to monitor input at the battery exerciser from the cell to determine whether a test constraint has been violated.

Power supply device and vehicle using the same

A power supply device includes functional modules, and a main controller that is connected to and controls the modules. Each module includes a battery block, a communication interface, a memory and a battery state detector. The block includes a battery cells that are connected in serial and/or in parallel to each other. The interface exchanges data with other modules or the controllers. The memory can store data exchanged through the interface. The battery state detector can detect at least one of current, voltage and temperature of the block. When the module is connected to the controller, the controller assigns a unique address to the module. The module stores the unique address, which is assigned by the controller, in the memory. The module exchanges data based on the address.

Power supply stack replacement method, control device, and storage medium storing control program

A power supply stack replacement method includes: discharging or charging power supply stacks of a power supply device in which the power supply stacks are electrically connected in parallel with each other until the SOC of each of the power supply stacks becomes a predetermined value; and replacing a targeted power supply stack among the power supply stacks of which the SOC is the predetermined value through the charging or discharging with a replacement power supply stack.

Battery monitoring in electric vehicles, hybrid electric vehicles and other applications

A method for monitoring the condition of at least one cell of a battery, used in an electric or hybrid electric vehicle. The battery is connected to a power converter to supply electrical power to an electrical load. The method includes the steps of: controlling the power converter to vary the input impedance of the power converter to draw a varying current from the cell; sensing the voltage across the cell and the current drawn in response to varying the impedance of the power converter; calculating from the sensed voltage and current the complex impedance of the cell; and comparing the calculated complex impedance with information indicative of a correlation between (i) the complex impedance and (ii) information indicative of the condition of the cell, to give an indication of the condition of the cell. The varying current may be actively varied or passively varied.

Voltage monitoring apparatus for plural battery

A fail signal indicating overcharge/overdischarge of unit cells detected by voltage detecting ICs ( 21 - 1 ) to ( 21 - n ) is transmitted as a digital signal and an analog signal to a CPU 32. If the analog fail signal and digital fail signal agree with each other, the CPU 32 determines that overcharge or overdischarge is occurring in the unit cells. If the fail signals disagree with each other, it is determined that an error is occurring in data communication in communication lines L 1 to L 3 and the error is informed to an operator with an alarm signal or the like. As a result, overcharge or overdischarge is highly accurately detectable.

Battery system

A battery system includes: a first battery cell; a second battery cell; a power load supplied with current from the first battery cell and the second battery cell; a connection which electrically connects a negative electrode terminal of the first battery cell and a positive electrode terminal of the second battery cell; a connection which electrically connects the first negative electrode terminal and the second positive electrode terminal; a cell balancing circuit which causes electromotive voltages of the first battery cell and the second battery cell to be substantially equal; and a controller, wherein the controller enables the current to be supplied to the power load after causing the electromotive voltages of the first battery cell and the second battery cell to be substantially equal, thereby determining looseness of the connection.

Battery monitoring system using time-based signals

Systems and methods for monitoring a battery stack having a plurality of cells are provided. One system includes a plurality of time delay circuits. Each of the time delay circuits is electrically coupled to at least one of the plurality of cells. The time delay circuits are configured to execute a time delay in response to receiving a trigger signal and output a time delay marking signal indicating that the time delay has elapsed. The time delay is based on a voltage of the cell(s) to which the respective time delay circuit is electrically coupled. The system further includes a control circuit configured to receive the time delay marking signal from each of the time delay circuits and, for each received time delay marking signal, to determine the voltage of the at least one of the plurality of cells associated with the respective time delay marking signal.

Battery system with cell voltage detecting units

A battery system with at least one module includes a plurality of battery cells. A cell voltage detecting circuit is associated with each battery cell of the plurality of battery cells. The cell voltage detecting circuits of the at least one module are connected to a multiplexer. An output of the multiplexer is connected to a communication bus via an analog-digital converter. The communication bus is connected to an evaluating unit. The multiplexer is additionally connected to at least one auxiliary voltage source that is known to the evaluating unit. In a method for monitoring a battery system with at least one module including a plurality of battery cells, a voltage of each of the battery cells is detected and fed to an evaluating unit via a cell voltage detecting unit. An output signal of the cell voltage detecting unit is tested for plausibility.

Semiconductor device and voltage measuring device

In an assembled battery including plural cells series-coupled in multiple stages, each voltage measuring unit includes an analog front end unit which measures the voltages of cells, an interface unit for interfacing with a common bus, a voltage measurement control unit which controls the analog front end unit and the interface unit, and an insulating element which allows communication between the voltage measurement control unit and the interface unit in a state of being insulated from each other. The interface unit of each voltage measuring unit is electrically insulated, so that it can be coupled to a low-voltage power supply system of the electrical system that includes the battery system control unit. Since there is no potential difference between the interface unit and the battery system control unit, they can be coupled to each other via the common bus.

Method and Arrangement for Monitoring the Voltage on Electrical Storage Units, Battery and Motor Vehicle having such a Battery

The present disclosure relates to a method for monitoring the voltage on electrical storage units, to a battery and to a motor vehicle having such a battery that are configured to be used particularly for improved establishment of overvoltages and/or undervoltages on modules of the electrical storage unit. To this end, a method for monitoring the voltage on at least one electrical storage unit includes extracting an idle voltage U_OCV on the at least one electrical storage unit from a voltage U_measured that is measured on the at least one electrical storage unit.

Device and method for equalizing current drain from a battery stack

Embodiments of the present invention may provide a battery monitor for a battery system that avoids current loops. A battery monitor may be provisioned as an integrated circuit and may include a pair of supply pins for reception of power to the integrated circuit, a third high impedance pin, and a voltage regulation circuit. When the circuits are deployed, the supply pins of several battery monitors may be connected to each other to form a stack. The high impedance inputs of each battery monitor may be coupled to low voltage terminals of an associated battery cell. A voltage reference circuit within the battery monitor may maintain the voltage at a low voltage supply of the monitors at a level that matches the voltage present on the high impedance input. Thus, the voltages on the monitors' low voltage supplies may be regulated. As a result, no current should flow through the high impedance pins of the battery monitor. All current flow should occur through a single loop that extends through the entire stack of battery monitors.

Battery monitoring system and semiconductor device

A battery monitoring system includes a plurality of battery cells connected in series and including a first battery cell at a highest potential; a discharge circuit connected to a high potential side of the first battery cell through a first line; a circuit connected to the high potential side of the first battery cell through a second line; and a plurality of electro-static protection circuits each including one end portion connected to at least one of a high potential side and a low potential side of each of the battery cells, and another end portion connected to the first line.

Open circuit voltage checking for a battery system

Systems and methods for managing open circuit voltage checks of energy storage modules in an energy storage system. Embodiments of the present invention provide a controller of an energy storage system configured to schedule open circuit voltage checks for the energy storage modules, determine if conditions of an energy storage module, and of the overall energy storage system, are favorable for performing an open circuit voltage check, and defer an open circuit voltage check if at least one condition is not favorable. The controller is further configured to abandon an open circuit voltage check in progress if one or more conditions of the overall energy storage system changes in a manner that is unfavorable for continuing with the open circuit voltage check.

Energy storage cell for a multi-cell energy storage device

An energy storage cell for a multi-cell energy storage device is disclosed. The energy storage cell comprises a cell information storage device adapted to store cell information regarding the energy storage cell.

Method and system for calibrating battery pack voltage

A negative terminal voltage of a cell is changed from a first to a second negative terminal voltage so that a cell voltage is changed from a first to a second output voltage. A differential-mode calibration parameter is calculated based on a difference between the first and second output voltages and a difference between the first and second negative terminal voltages. The negative terminal voltage of the cell is then changed from the first to second negative terminal voltage so that the positive terminal voltage of the cell is changed from a first to a second positive terminal voltage and the output voltage is changed from a third to a fourth output voltage. A common-mode calibration parameter is calculated based on the differential-mode calibration parameter and a difference between the third and fourth output voltages and a difference between the first and second positive terminal voltages.

Battery pack monitoring system and method for assigning a binary id to a microprocessor in the battery pack monitoring system

A battery pack monitoring system is provided. The system includes a master microprocessor and a first microprocessor. The master microprocessor outputs a first signal from an output port thereof to induce an input port of the first microprocessor to have a first low logic voltage. The master microprocessor sends a message having a first binary ID from the communication bus port thereof through a communication bus after outputting the first signal. The first microprocessor receives the first binary ID at the communication bus port thereof and stores the first binary ID in a non-volatile memory of the first microprocessor when the input port of the first microprocessor has the first low logic voltage.

Battery System for Vehicle, On-Vehicle Battery Module, and Cell Controller

A battery system for vehicle comprises a battery unit that is constituted with a plurality of serially connected cell groups each include a plurality of serially connected battery cells, integrated circuits that are each disposed in correspondence to one of the cell groups of the battery unit and each measure terminal voltages at the battery cells in the corresponding cell group, and a signal transmission path through which one of the integrated circuits is connected to another one of the integrated circuits or to a circuit other than that of the integrated circuits.

Single cell fault tolerant battery system architecture

A battery system may include multiple battery cells grouped into modules. Each battery module may have a diffuser plate to direct the hot gases and molten material that are ejected during cell failure. The gas and material may be directed away from the nearest neighboring cells in the event of a single cell thermal runaway. Residual thermal energy is wicked away, absorbed or contained to keep heat away from the neighboring cells. These and other features may manage the blast energy and residual thermal energy of a single cell failure event. This may prevent a cascading failure of the larger battery system, thereby mitigating the risk of injury to personnel and property.

MONITORING DEVICE AND POWER STORAGE SYSTEM

A monitoring device includes a first detection block, a second detection block, and a monitoring unit. Each of the first detection block and the second detection block includes one or more voltage detectors that detect voltages across power storage cells. The monitoring unit includes a complement processor that, when a circuit in the first detection block breaks down and the first detection block fails to transmit the states of the power storage cells to the monitoring unit, complements the states of the power storage cells that have not been acquired from the first detection block, based on the states of the power storage cells detected in the second detection block. 1. A monitoring device comprising:a first detection block;a second detection block, each of the first detection block and the second detection block including one or more state detectors that detect states of power storage cells inside a power storage unit mounted in a vehicle; anda monitoring unit that acquires the states of the power storage cells detected in each of the first detection block and the second detection block,the monitoring unit including a complement processor that, when a circuit in the first detection block breaks down and the first detection block fails to transmit the states of the power storage cells to the monitoring unit, complements the states of the power storage cells that have not been acquired from the first detection block, based on the states of the power storage cells detected in the second detection block.2. The monitoring device according to claim 1 , wherein each of the first detection block and the second detection block transmits the states of the power storage cells detected by the state detectors inside to the monitoring unit via a communication circuit possessed by one of the state detectors.3. The monitoring device according to claim 1 , whereinthe state detectors detect voltages across a plurality of power storage cells connected in series inside the power ...

BATTERY MONITORING DEVICE

A battery monitoring device includes: an oscillator causing an AC signal to flow in the battery cell; a subtractor acquiring voltage fluctuation of the battery cell when the AC signal flows as a response signal; and a calculation unit calculating complex impedance. The calculation unit calculates the complex impedance based on a multiplication value X of the response signal and a first reference signal outputted in synchronization with the AC signal, and a multiplication value Y of the response signal and the second reference signal obtained by shifting the phase of the AC signal. The AC signal is a rectangular wave signal, the first reference signal is a rectangular wave signal outputted in synchronization with the AC signal, and the second reference signal is a rectangular wave signal, the phase of which is shifted so as not to be outputted overlapping with the first reference signal. 1. A battery monitoring device that monitors a state of a storage battery including an electrolyte and a plurality of electrodes , comprising:a signal generating unit that causes an AC signal to flow in the storage battery;a response signal acquiring unit that acquires a voltage fluctuation of the storage battery when the AC signal flows as a response signal; anda calculation unit that calculates a complex impedance of the storage battery; whereinthe calculation unit is configured to calculate a complex impedance of the storage battery based on a multiplication value of the response signal and a first reference signal outputted in synchronization with the AC signal, and a multiplication value of the response signal and a second reference signal obtained by shifting a phase of the AC signal;the AC signal is a rectangular wave signal;the first reference signal is a rectangular wave signal outputted in synchronization with the AC signal; andthe second reference signal is a rectangular wave signal, a phase thereof being shifted so as not to be outputted overlapping with the first ...

Semiconductor device and battery monitoring system

A semiconductor device includes: a boosting section configured to output a second voltage boosted from a first voltage; a voltage lowering section configured to output a lowered voltage that has been lowered from the second voltage by a predetermined voltage; a first buffer amp including a non-inverting input terminal connected to an output of the voltage lowering section; a second buffer amp including a non-inverting input terminal that is input with the first voltage; and a difference output section configured to output a voltage corresponding to a difference between output of the first buffer amp and output of the second buffer amp.

Semiconductor Device, Power Storage Device, and Electronic Device

A semiconductor device that tests and/or monitors each of batteries provided in an assembled battery is provided. The semiconductor device includes a hysteresis comparator and a circuit, and the circuit has a function of setting a high-level side threshold voltage and a low-level side voltage of the hysteresis comparator. The circuit includes first and second capacitors. A first terminal of the first capacitor is electrically connected to a high-level side reference potential input terminal of the hysteresis comparator and a first terminal of the second capacitor is electrically connected to a low-level side reference potential input terminal of the hysteresis comparator. After a first reference potential is input to the high-level side reference potential input terminal and a second reference potential is input to the low-level side reference potential input terminal, a negative electrode of a cell is electrically connected to each second terminal of the first and second capacitors, whereby the potential of each first terminal of the first and second capacitors is changed. 1. A semiconductor device comprising a circuit and a hysteresis comparator ,wherein the circuit comprises a first input terminal,wherein the hysteresis comparator comprises a first reference potential input terminal and a second reference potential input terminal, andwherein the circuit is configured to change a first reference potential of the first reference potential input terminal and a second reference potential of the second reference potential input terminal in accordance with a first potential input to the first input terminal.2. A power storage device comprising the semiconductor device according to and a cell claim 1 ,wherein the circuit comprises a second input terminal,wherein the cell is configured to charge electricity,wherein a positive electrode terminal of the cell is electrically connected to the second input terminal,wherein a negative electrode terminal of the cell is ...

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.

In-situ On-line and Embedded Battery Impedance Measurement Device Using Active Balancing Circuits

The present disclosure relates to methods and systems for management and control of interconnected energy storage modules, such as battery packs, that can form a larger energy storage system. The disclosure also relates to methods and system for the measurement of cell impedances in a battery pack in-situ and on-line and using active balancing circuits that may already be present in the battery pack. The methods and systems can inject disturbances of different frequencies and measure impedance by using the active balancing circuits present in the battery pack, which can transform an active balancer into a dual active balancer and impedance measurement system. The speed up of impedance measurement energy storage modules can be accomplished by using multi-tone, orthogonal or spread spectrum waveforms applied simultaneously on all or a sub-set of the active balancer circuits in an active balancer. 1. A method of energy control in an energy storage system , comprising:providing an active balancer comprising a plurality of active balancer circuits; andperforming active balancing using the plurality of active balancer circuits.2. The method of claim 1 , further comprising measuring impedance using the plurality of active balancer circuits.3. The method of claim 1 , further comprising:using out of phase disturbances in multiple active balancer circuits as impedance measurement devices in the active balancer to cancel or minimize load ripple.4. The method of claim 1 , further comprising:using spread spectrum disturbance waveforms in all or a sub-set of the active balancer circuits in the active balancer.5. The method of claim 4 , further comprising:minimizing load ripple caused by disturbances used to measure impedance by using spread spectrum disturbance waveforms in all or a sub-set of the active balancer circuits in the active balancer.6. The method of claim 2 , further comprising:injecting multi-tone, orthogonal, or spread spectrum waveforms simultaneously, by the ...

Processing System for Monitoring the Cell Voltages of a Rechargeable Battery, Related Battery Monitoring System and Electric Vehicle

An embodiment processing system comprises terminals configured to be connected to cells of a rechargeable battery to receive cell voltages, a digital processing circuit, a serial communication interface and a transmission queue interfacing the digital processing circuit with the serial communication interface for parallel operation. The digital processing circuit synchronously acquires a given number of digital samples of each of the cell voltages and stores them to a memory. The digital processing circuit encodes the digital samples stored to the memory via a data compression module, and stores the encoded data to the transmission queue. For example, the data compression module may generate the encoded data by subtracting a given offset from each digital sample to generate values indicative of the dynamic variation of each sample with respect to the offset, and removing a given number of most significant bits from each value. 1. A processing system configured to monitor a given number of cell voltages of a given number of cells of a rechargeable battery , wherein the processing system comprises:terminals configured to be connected to the cells in order to receive the given number of cell voltages;at least one analog to digital converter configured to generate digital samples of the given number of cell voltages, each digital sample having a given number of bits;a transmission queue; synchronously acquire a given number of the digital samples of each of the given number of cell voltages;', 'store the acquired digital samples in a memory;', 'receive a given offset via a serial communication interface;', subtracting the given offset from each of the given number of digital samples of the given number of cell voltages, thereby generating values indicative of a dynamic variation of each sample with respect to the offset, and', 'removing a given number of most significant bits from each of the values indicative of the dynamic variation of each sample with respect to the ...

Method for Detecting Electrical Fault States in a Removable Battery Pack and System for Carrying out the Method

A method detects electrical fault states of a plurality of energy storage cells interconnected with one another in series and/or in parallel in a removable battery pack using a first monitoring unit integrated in the removable battery pack and a multiplexer measuring apparatus, which can be controlled by the first monitoring unit to sequentially measure cell voltages of the energy storage cells. A further monitoring unit sends a command to the first monitoring unit to control the multiplexer measuring apparatus, and is provided in an electrical device, in particular a charging device, a diagnostic device or an electrical consumer, that can be electrically connected to the removable battery pack. 1. A method for detecting an electrical fault state of a plurality of energy storage cells interconnected with one another in series and/or in parallel in a removable battery pack , comprising:sequentially measuring cell voltages of energy storage cells of the plurality of energy storage cells with a multiplexer measuring apparatus operably connected to the plurality of energy storage cells;controlling the multiplexer measuring apparatus to sequentially measure the cell voltages using a first monitoring unit integrated in the removable battery pack and operably connected to the multiplexer measuring apparatus; andsending a command to the first monitoring unit to control the multiplexer measuring apparatus from a second monitoring unit, the second monitoring unit integrated in an electrical device that can be electrically connected to the removable battery pack.2. The method according to claim 1 , further comprising:sequentially closing switching elements of a plurality of switching elements in order to sequentially measure the cell voltages of the energy storage cells, the plurality of switching elements included in the removable battery pack, and the switching elements each connected in parallel with the energy storage cells.3. The method according to claim 2 , further ...

Method for determining a reference energy profile and device for forming a battery

A method for determining a reference energy profile has comparing a first course and a second course. The first course describes an energy absorption of a first battery during a first charge cycle. The second course describes the energy absorption of the first or a second battery during a second charge cycle which follows after the first charge cycle. The comparison is performed for a plurality of time intervals. The method has determining a deviation between the first and the second course for each of the plurality of time intervals. In addition, the method has determining an amount of electrical energy based on the deviation for each of the time intervals, wherein the amount of electrical energy describes a preset default value of the reference energy profile for an amount of energy to be fed to a battery to be formed during a formation process of the battery to be formed for each of the time intervals.

Switch Control Apparatus and Method

A switch control apparatus and method to diagnose whether a plurality of switches are controllable and effectively control the plurality of switches. According to an aspect of the present disclosure, it is possible to effectively maintain the states of the switches through a plurality of processors. 1. A switch control apparatus , comprising:a first processor configured to output a first control signal for controlling an operation state of a first switch, a second control signal for controlling an operation state of a second switch, and a diagnosis signal;a second processor configured to output a verification signal for verifying the operation states of the first switch and the second switch;a diagnosing unit connected to the first switch through a first control line and connected to the second switch through a second control line to receive the first control signal, the second control signal and the diagnosis signal from the first processor and to receive the verification signal from the second processor, the diagnosing unit being configured to output the verification signal or a third control signal corresponding to the verification signal to each of the first switch and the second switch based on the diagnosis signal and the verification signal; anda voltage sensor configured to measure voltages of the first control line and the second control line and output the of measured voltages to the first processor,wherein the first processor is configured to detect a signal in each of the first control line and the second control line based on the measured voltages and diagnose whether the first switch and the second switch are controllable based on the detected signal.2. The switch control apparatus according to claim 1 ,wherein the diagnosing unit includes a flip-flop configured to receive the second control signal from the first processor and output a first output value identical to the received second control signal and a second output value that is an inverted value ...

Malfunction detection apparatus capable of detecting actual malfunctioning device not due to abnormal input values

A first classification circuit obtains first measured values from each of devices, the first measured values of the device including at least one input value to the device and at least one output value from the device, and classifies the first measured values of the devices into normal first measured values and outlier first measured values using the OCSVM (One Class nu-Support Vector Machine). A second classification circuit obtains second measured values from each of devices, the second measured values of the device including at least one input value to the device, and classifies the second measured values of the devices into normal second measured values and outlier second measured values using the OCSVM. A determination circuit determines a device having the outlier first measured values and the normal second measured values, to be a malfunctioning device.

BATTERY MANAGEMENT METHOD, BATTERY DEVICE, AND VEHICLE COMPRISING BATTERY DEVICE

A battery device receives a state of charge (SOC) a SOC setting range, charge at least one battery pack, estimates a SOC based on state information of the at least one battery pack, monitors whether the estimated SOC reaches a charging reference value corresponding to an upper limit of the SOC setting range, and stops charging when it is confirmed through a result of the monitoring that the estimated SOC reaches the charging reference value. The SOC setting range may be determined based on driving information of a vehicle, and may be within a SOC limiting range in which degradation of battery cells included in the at least one battery pack is the lowest. 1. A battery management method , comprising:receiving a state of charge (SOC) setting range;charging at least one battery pack;estimating a SOC of the at least one battery pack based on state information of the at least one battery pack;monitoring whether the estimated SOC reaches a charging reference value corresponding to an upper limit of the SOC setting range; andstopping charging when it is confirmed through a result of the monitoring that the estimated SOC reaches the charging reference value,wherein the SOC setting range is determined based on driving information of a vehicle, and is within a SOC limiting range, wherein the SOC limiting range is predetermined to cause a lowest degree of degradation of battery cells of the at least one battery pack.2. The battery management method of claim 1 , further comprising deriving the SOC setting range based on the driving information.3. The battery management method of claim 1 , further comprising:monitoring whether the estimated SOC deviates from a lower limit of the SOC setting range; andwhen the estimated SOC deviates from the lower limit of the SOC setting range, operating the at least one battery pack in a SOC range that is lower than the SOC setting range.4. A battery device claim 1 , comprising:at least one battery pack including a plurality of battery cells ...

SECONDARY BATTERY CHARGING METHOD THAT SHORTENS CHARGING TIME

A secondary battery charging method that shortens charging time includes a step for introducing a plurality of battery cells onto an activation tray and CC-charging the battery cells; and a step for connecting the plurality of battery cells in parallel. The charging method according to the present invention shortens the time typically required for CV-charging by connecting battery cells in parallel after CC-charging, thus having the effect of replacing CV-charging. 1. A method for charging a plurality of battery cells , the method comprising:placing the plurality of battery cells into an activation tray;charging the battery cells with a constant current; andconnecting the plurality of battery cells in parallel after charging the battery cells with a constant current.2. The method of claim 1 , wherein the connecting of the plurality of battery cells in parallel includes covering the activation tray with a tray cover member.3. The method of claim 2 , wherein a first terminal plate to be connected to first electrode terminals of the plurality of battery cells is installed in the activation tray and a second terminal plate to be connected second electrode terminals of the plurality of battery cells is installed in the tray cover member to connect the plurality of battery cells in parallel.4. The method of claim 1 , wherein the connecting of the plurality of battery cells in parallel eliminates charging of the plurality of battery cells with a constant voltage.5. The method of claim 1 , wherein a time of connecting the plurality of battery cells in parallel is equal to or less than 25 minutes.6. The method of claim 5 , wherein the time of connecting the plurality of battery cells in parallel is equal to or larger than 9 minutes and is equal to or less than 25 minutes.7. A method of activating a secondary battery comprises the method of .8. An activation tray assembly in which a plurality of battery cells are mountable for a transfer and charging of the plurality of ...

ENERGY STORAGE ROLLING CAPACITY CHECK INCLUDING IN-SITU LIFE MODEL COMPARISON

According to some embodiments, system and methods are provided comprising providing an energy storage device including two or more energy storage elements; initiating execution of an energy storage capacity module operative to test a capacity of a first energy storage element; removing the storage element from service, while maintaining service of the energy storage device; measuring a capacity of the removed storage element; receiving the measured capacity at a lifing model; executing the lifing model to generate an output; and manipulating operation of the energy storage device based on the generated output. Numerous other aspects are provided. 1. A method comprising:providing an energy storage device including two or more energy storage elements;initiating execution of an energy storage capacity module operative to test a capacity of a first energy storage element;removing the storage element from service, while maintaining service of the energy storage device;measuring a capacity of the removed storage element;receiving the measured capacity at a lifing model;executing the lifing model to generate an output; andmanipulating operation of the energy storage device based on the generated output.2. The method of claim 1 , wherein the energy storage element is at least one of a cell claim 1 , a string claim 1 , and a rack of a battery.3. The method of claim 1 , further comprising:determining a capacity check condition is present prior to initiating the energy storage capacity module.4. The method of claim 1 , further comprising:returning the removed storage element to service.5. The method of claim 4 , further comprising:removing a second energy storage element from service to test the capacity of the second energy storage element.6. The method of claim 1 , wherein the generated output is the predicted capacity of the energy storage element.7. The method of claim 1 , further comprising:executing a global lifing model for the energy storage device.8. The method of ...

BATTERY ANALYSIS SYSTEM AND METHOD

A system or method for determining a battery state can include generating a set of models based on a measured response of a plurality of batteries to an applied load, measuring battery properties of a battery, and using a state estimator to determine a battery state associated with a battery. 1. A method comprising: applying a load profile to the respective battery; and', 'characterizing a response of the respective battery to the applied load;, 'for each battery of a plurality of batteries a thermal model;', 'an electrochemical model; or', 'a heat generation model;, 'generating a set of models based on the responses, wherein each model comprises at least one ofvalidating a model of the set of models;measuring battery properties of a second battery using a sensor; andusing a state estimator to determine a state of the second battery based on the battery properties and the validated model.2. The method of claim 1 , wherein validating the model comprises validating the model by comparing historic battery data to simulated battery data generated using the model.3. The method of claim 2 , wherein the model of the set of models is validated when the historic battery data and the simulated battery data match to within a threshold.4. The method of claim 1 , further comprising claim 1 , validating the state estimator.5. The method of claim 4 , wherein validating the state estimator comprises comparing a measured battery state to an estimated state determined using the state estimator.6. The method of claim 5 , wherein the state estimator is validated when the measured battery state and the estimated battery state match to within a threshold.7. The method of claim 1 , wherein the applied load comprises a chirped electrical load claim 1 , wherein the response is measured during and after the chirped electrical load is applied.8. The method of claim 1 , wherein the second battery is integrated into one of: an electric passenger vehicle claim 1 , an electric bicycle claim 1 , ...

Non-Intrusive Correlating Battery Monitoring System and Method

There is disclosed a system and method for determining whether a battery or battery system has encountered a thermal failure and/or end of service life condition. The battery monitoring system is configured to generate a plurality of alarms based on the occurrence of a number of conditions in the battery system.

Secondary battery degradation determination device

The secondary battery degradation determination device includes: a plurality of voltage sensors connected to the respective batteries; a discharging circuit connected in parallel to each battery group; and a discharge controller. The discharge controller drives a switching element so as to open and close such that current flowing in the discharging circuit has a pulse shape or the like. Each voltage sensor measures a voltage value of the AC component. On the basis of the measurement value, the internal resistance calculation section calculates an internal resistance, and a determination section determines degradation of the battery on the basis of the internal resistance.

Method and device for monitoring a state of at least one predetermined battery cell of a battery

A method for monitoring a state of at least one predetermined battery cell of a battery having a number of series-connected or series-connectable battery cells. In one example, the method includes placing the battery, during a first phase, into a first state in which the battery cells in each case have a predefined charging state, discharging the battery, which is in the first state, during a second phase following the first phase, charging the battery during a third phase, following the second phase, up to a point in time at which at least one battery cell of the battery has the predefined charging state, detecting the voltage provided by the at least one predetermined battery cell at least temporarily, and determining information for detecting the state of the at least one predetermined battery cell by means of evaluating the detected voltage.

Apparatus and method for acquiring degradation information of lithium-ion battery cell

Provided are an apparatus and method of obtaining degradation information of a lithium ion battery cell. The apparatus according to an embodiment estimates a first positive electrode usage region related to a first state of health of the lithium ion battery cell. The apparatus estimates a second positive electrode usage region related to a second state of health of the lithium ion battery cell. Then, the apparatus calculates an amount of change of maximum storage capacity of a positive electrode of the lithium ion battery cell with respect to a usage period from the first state of health to the second state of health, based on the first positive electrode usage region and the second positive electrode usage region.

BATTERY MONITORING APPARATUS

A battery monitoring apparatus includes an electric power supply terminal connected with a first electrical path, a voltage input terminal connected with a second electrical path, a signal control unit connected with a third electrical path, a response signal input terminal connected with a fourth electrical path, and a calculating unit. The signal control unit is configured to cause a predetermined AC signal to be outputted from a storage battery with the storage battery itself being an electric power source for the output of the predetermined AC signal. The calculating unit is configured to calculate, based on a response signal of the storage battery to the predetermined AC signal, a complex impedance of the storage battery. Moreover, at least one of the first to the fourth electrical paths is merged with at least one of the other electrical paths into an electrical path that is connected to the storage battery. 1. A battery monitoring apparatus for monitoring a state of a storage battery , the battery monitoring apparatus comprising:an electric power supply terminal which is connected with a first electrical path and via which drive electric power is supplied from the storage battery to the battery monitoring apparatus through the first electrical path;a voltage input terminal which is connected with a second electrical path and via which a terminal voltage of the storage battery is inputted to the battery monitoring apparatus through the second electrical path so as to be measured by the battery monitoring apparatus;a signal control unit connected with a third electrical path and configured to cause a predetermined AC signal to be outputted from the storage battery through the third electrical path;a response signal input terminal which is connected with a fourth electrical path and via which a response signal of the storage battery to the AC signal is inputted to the battery monitoring apparatus through the fourth electrical path; anda calculating unit ...

Battery monitoring system and method and transportation system with battery monitoring system

A waveform designator designates a given waveform of an AC signal by specifying a frequency as a reference. A signal controller causes a storage battery to output a response signal based on its own power. A detector detects a frequency component in the response signal corresponding to the reference frequency of the AC signal based on a product of the reference frequency and the response signal. A calculator calculates a complex impedance of the storage battery based on the frequency component in the response signal. A noise determiner determines presence or absence of a noise signal corresponding to the reference frequency of the AC signal before the signal controller causes the storage battery to output the AC signal. A noise controller either avoids or removes the noise signal.

METHOD FOR ESTIMATING OPERATION VOLTAGE OF SOLAR BATTERY CELL IN SOLAR BATTERY MODULE AND SOLAR BATTERY CELL OPERATION VOLTAGE ESTIMATION SYSTEM

A method for estimating an operation voltage of a cell includes setting a state in which one cell is shielded from light; detecting a small change of an output current of a module in that state; irradiating another cell with modulated and detecting the small change of the output current light in that state; detecting an operation voltage of the module in that state; generating a first calibration line by connecting a first point and a second point which are plotted on coordinate axes representing a voltage and a relative ratio of a resistor; irradiating a cell the operation voltage of which is to be estimated with the modulated light and detecting the small change of the output current of the module in a state in which none of the cells is shielded from light; detecting the operation voltage of the module in that state; generating a second calibration line by connecting a third point and the second point which are plotted on the coordinate axes; calculating a value of the relative ratio of the resistor of the cell the operation voltage of which is to be estimated; and calculating a value of a voltage of a fourth point, which becomes the value of the relative ratio of the resistor and is provided on the second calibration line, as the operation voltage of the cell to be estimated. 1. A method for estimating an operation voltage of each of m (m is an integer which is equal to or greater than 2) solar battery cells which constitute a solar battery module and are connected in series , the method comprising:a first step of setting a state in which a first solar battery cell, which is one solar battery cell among the m solar battery cells, is shielded from light;a second step of irradiating the first solar battery cell with modulated light and detecting a small change of an output current of the solar battery module in the state in which the first solar battery cell is shielded from light;a third step of irradiating each of the (m−1) solar battery cells excluding the ...

ESTIMATING A BATTERY LIFE OF A HEARING INSTRUMENT

A processing system determines, based on a set of input datapoints, a current state of charge (SOC) of a battery of a hearing instrument. Additionally, the processing system determines a predicted agenda of the hearing instrument, the predicted agenda comprising one or more future time segments. The processing system estimates, based on the current state of charge and the predicted agenda of the hearing instrument, an amount of time remaining until the future SOC of the battery of the hearing instrument reaches a threshold. 1. A method comprising:determining, by a processing system, based on a set of input datapoints, a current state of charge (SOC) of a battery of a hearing instrument;determining, by the processing system, a predicted agenda for the hearing instrument, wherein the predicted agenda comprises one or more future time segments and each of the future time segments corresponds to a device state of the hearing instrument in a plurality of possible device states; andestimating, by the processing system, based on the current state of charge and the predicted agenda, an amount of time remaining until a future SOC of the battery of the hearing instrument reaches a threshold.2. The method of claim 1 ,wherein the method further comprises obtaining, by the processing system, the set of input datapoints, each input datapoint in the set of input datapoints including:(i) a voltage reading indicating a voltage produced by a battery of a hearing instrument, and(ii) device state data specifying a device state in the plurality of possible device states, andwherein determining the present SOC of the battery of the hearing instrument comprises determining, by the processing system, the present SOC of the battery of the hearing instrument based on a present input datapoint and a previous input datapoint, wherein the present input datapoint and the previous input datapoint are input datapoints in the set of input datapoints and a time associated with the previous input ...

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.

DETECTOR FOR EARLY DETECTION OF BATTERY FIRE AND/OR AN OVERHEATED CONDITION IN A BATTERY

A fire and/or overheated condition detector for a lithium ion battery is provided. The fire and/or overheated condition detector includes a chamber defining a detection space fluidly communicative with an interior of the lithium ion battery, a temperature sensor operably disposed proximate to the detection space, gas detection assemblies configured to detect gases through absorption in the detection space and a smoke detection assembly configured to detect particle scattering in the detection space to discriminate smoke particles from nuisance particles. 1. A fire and/or overheated condition detector for a lithium ion battery , comprising:a chamber defining a detection space fluidly communicative with an interior of the lithium ion battery;a temperature sensor operably disposed proximate to the detection space;gas detection assemblies configured to detect gases through absorption in the detection space; anda smoke detection assembly configured to detect particle scattering in the detection space to discriminate smoke particles from nuisance particles.2. The fire and/or overheated condition detector according to claim 1 , wherein:an entrance to the detection space is fluidly interposed between the interior of the lithium ion battery and the detection space, andthe temperature sensor comprises one or more temperature sensors operably disposed in the entrance to the detection space.3. The fire and/or overheated condition detector according to claim 1 , wherein the gas detection assemblies comprise a hydrogen fluoride (HF) gas detection assembly and the HF gas detection assembly comprises:a light source configured to emit light having a wavelength range of about 2.0-3.0 μm through the detection space, anda photodetector configured to detect the light having the wavelength range of about 2.0-3.0 μm.4. The fire and/or overheated condition detector according to claim 3 , wherein the light source comprises a 2.6 μm light source.5. The fire and/or overheated condition ...

REMAINING CAPABILITY EVALUATION METHOD FOR SECONDARY BATTERY, REMAINING CAPABILITY EVALUATION PROGRAM FOR SECONDARY BATTERY, COMPUTATION DEVICE, AND REMAINING CAPABILITY EVALUATION SYSTEM

A deterioration diagnosis unit of an arithmetic unit constituting a remaining performance evaluation system diagnoses the deterioration degree of a secondary battery that has already been used for primary use based on an actual measurement value. The deterioration speed update unit updates the deterioration speed of the secondary battery based on the diagnosis result of the secondary battery . The remaining performance estimation unit estimates the remaining performance of the secondary battery after the start of secondary use based on the updated deterioration speed and a usage method at the time of the secondary use of the secondary battery 1. A secondary battery remaining performance evaluation program embedded on a non-transitory computer-readable recording medium , comprising:a module that diagnoses the deterioration degree of a secondary battery that has already been used for primary use based on an actual measurement value;a module that updates the deterioration speed of the secondary battery based on the diagnosis result of the secondary battery; anda module that estimates the remaining performance of the secondary battery after the start of secondary use based on the updated deterioration speed and a usage method at the time of the secondary use of the secondary battery.2. The secondary battery remaining performance evaluation program according to claim 1 , whereinthe deterioration degree of the secondary battery includes the deterioration degree of storage deterioration and the deterioration degree of cycle deterioration, andthe module that updates the deterioration speed updates the deterioration speed of the storage deterioration and the deterioration speed of the cycle deterioration individually.3. The secondary battery remaining performance evaluation program according to claim 1 , whereinthe deterioration degree of the secondary battery is defined by the sum of the deterioration degree of storage deterioration and the deterioration degree of cycle ...

METHOD AND SYSTEM FOR DETERMINING THE STATE OF HEALTH OF A BATTERY OF A MOTORIZED LAND VEHICLE

The invention relates to a method for determining a value of a parameter which characterizes the state of health of a battery made up of a plurality of cells and installed on-board a motorized land vehicle, as well as to an associated computer determination system (). 1100. A method for determining , by a computer system () , a value of a parameter which characterizes the state of health of a battery made up of a plurality of cells and installed on-board a motorized land vehicle , the method comprises the steps of:receiving processing data generated by a computer of the vehicle and transmitted by means of a radiofrequency signal communication device arranged in the vehicle, said processing data including data characterizing a state of charge of the battery, data characterizing at least one voltage measurement for each of the cells, data characterizing at least one intensity measurement for each of the cells, data characterizing at least one temperature measurement for each of the cells, and data characterizing a journey made by the vehicle,determining, for each of the cells, a value of a parameter which characterizes the state of health of the cell using the data characterizing at least one voltage measurement for each of the cells, the data characterizing at least one intensity measurement for each of the cells and the data characterizing at least one temperature measurement for each of the cells,determining at least one value of a parameter which characterizes a use of the battery using the data characterizing a state of charge of the battery and the data characterizing a journey made by the vehicle, anddetermining the value of the parameter which characterizes the state of health of the battery using the values of the parameters characterizing the state of health of each of the cells and the value characterizing a use of the battery.2. The method according to claim 1 , wherein the data characterizing a journey made by the vehicle include data characterizing at ...

Battery cell voltage sensing circuit diagnostics

A system and method are disclosed for diagnosing an open circuit of a cell voltage sensing board. The board includes, for each cell, a line balancing resistor, a line sense resistor, and a gate. Each gate connects and disconnects a given line balancing resistor to and from a corresponding cell. A cell voltage is measured for a selected battery cell, and a controller determines if the selected battery cell is an uppermost or lowermost cell in the battery stack. A line sense resistance value is calculated for the selected battery cell using a first set of equations when the selected battery cell is the uppermost cell, a second set of equations when the selected battery cell is the lowermost cell, and a third set of equations when the selected battery cell is neither. A control action is executed when the calculated line sense resistance exceeds a calibrated resistance threshold.

Systems for determining a voltage out-of-range high condition and a voltage out-of-range low condition of a battery module

A system for determining a voltage out-of-range high condition of a battery module is provided. A microcontroller determines first, second, and third voltage values from first, second, and third voltage sensors, respectively, coupled to first, second, and third battery cells, respectively; and determines a battery module voltage value based on a fourth signal. The microcontroller sums the first, second, and third voltage values to obtain a battery module high voltage sum value. The microcontroller generates a first control signal to induce a contactor to transition to an open operational position to electrically decouple the battery module from an electrical load, if a difference between the battery module high voltage sum value and the battery module voltage value is greater than or equal to a battery module voltage out-of-range high error value.

Method and Device for Determining Temperature Estimating Model, and Battery Management System to Which the Temperature Estimating Model is Applied

A method for determining a temperature estimating model for estimating a temperature in a battery module includes: estimating temperatures using a preliminary verification profile with models based on respective parameter sets; calculating first errors corresponding to differences between measured and estimated temperatures; comparing whether respective first errors for the respective parameter sets are less than a first threshold value; for parameter sets having a first error that is less than the first threshold value, calculating a maximum error; extracting a second parameter set by calculating a product of the maximum error and a first value plus a product of the first error and a second value; estimating temperatures according to reverification profile; calculating a second error corresponding to a difference between measured temperatures of the reverification profile and estimated temperatures; and finalizing the model when the second error is less than a third threshold value.

Electrical storage system, and control method for electrical storage system

A first electrical storage stack is connected in series with a second electrical storage stack. A current interrupter is configured to interrupt a current path by being removed from the current path. First and second detection line are respectively connected to first and second terminals of the first electrical storage stack. The second electrical storage stack is connected to the second terminal of the first electrical storage stack via the current interrupter. A third detection line is connected to a portion of the current path, located on the second electrical storage stack side of the current interrupter. A controller is configured to control charging and discharging operations of each of the first and second electrical storage stacks on the basis of the voltage of the first electrical storage stack, the voltage being detected via the first detection line and the third detection line.

Battery arrangement for a motor vehicle

A battery arrangement for a motor vehicle, includes a plurality of battery modules, each of the battery modules having a plurality of battery cells and being coupled to a control unit, and a high voltage lead wire for electrical coupling being provided between all adjacent battery modules, the control units each being designed to exchange data via the high voltage lead wire.

Battery system

A battery system includes a plurality of battery modules connected in parallel. Each battery module includes a battery, a first output terminal and a second output terminal, a switch circuit connected between the battery and the first output terminal, and a battery manager to detect a battery voltage of the battery and control the switch circuit. Each battery manager is connected to other battery managers through a communication bus and transmits module information of a corresponding battery module to the other battery managers through the bus. Each batter manager also receives module information from the other battery managers through the bus and controls a corresponding switch circuit based on the module information.

SAMPLING DETECTION CIRCUIT AND METHOD FOR DETECTING A CIRCUIT MALFUNCTION

The disclosure discloses a sampling detection circuit and a method for detecting a circuit malfunction. The method includes: receiving a detection instruction and controlling a plurality of equalization modules to be turned off in response to the detection instruction; collecting first sampled data of sampled equalization modules; controlling odd numbered equalization modules among the sampled equalization modules to be turned on and even numbered equalization modules among the sampled equalization modules to be turned off; collecting second sampled data of the sampled equalization modules; controlling the odd numbered equalization modules among the sampled equalization modules to be turned off and the even numbered equalization modules among the sampled equalization modules to be turned on; collecting third sampled data of the sampled equalization modules; and determining, according to the first sampled data, second sampled data and third sampled data, a malfunction in a sampling detection circuit and locating the malfunction. 1. A method for detecting a circuit malfunction , which is applied to a sampling detection circuit , characterized in that:the sampling detection circuit comprises: a plurality of energy storage modules, a plurality of equalization modules, and a plurality of first resistance modules,wherein one terminal of an energy storage module among the plurality of energy storage modules is connected to one terminal of a battery cell in a battery module, and the other terminal of the energy storage modules is connected to the other terminal of the battery cell,wherein one terminal of an corresponding equalization module among the plurality of equalization modules is connected to one terminal of the battery cell, and the other terminal of the corresponding equalization module is connected to the other terminal of the battery cell, and wherein the first resistance module is disposed between the equalization module and the battery cell, and the plurality ...

WIRELESS CONTROL SYSTEM, WIRELESS CONNECTION METHOD, AND BATTERY PACK

The present disclosure includes a wireless control system, a wireless connection method, and a battery pack. The wireless control system includes a master and a plurality of slaves. Each slave wirelessly transmits a response packet including an ID of each slave when it receives a first command packet wirelessly transmitted from the master. The master sets, as a first group, each slave to which is allocated the ID included in each response packet wirelessly received within a predetermined period of time from a time point at which the first command packet was transmitted, and sets, as a second group, each slave not set as the first group. The master wirelessly transmits a second command packet including the ID of each slave belonging to the second group. 1. A wireless control system , comprising:a master configured to wirelessly transmit a first command packet; anda plurality of slaves configured to monitor a condition of a plurality of battery modules,wherein each of the plurality of slaves is configured to wirelessly transmit a response packet including an identification (ID) of the corresponding slave in response to the first command packet when the first command packet is received,the master is configured to set, as a first group, each slave to which is allocated the ID included in each response packet wirelessly received within a predetermined period of time from a time point at which the first command packet was transmitted,the master is configured to set, as a second group, each slave not set as the first group among the plurality of slaves,the master is configured to wirelessly transmit a second command packet when at least one of the plurality of slaves belongs to the second group, andthe second command packet includes the ID of each slave belonging to the second group.2. The wireless control system according to claim 1 , wherein the master is configured to wirelessly transmit the second command packet with a first amplified signal strength associated with an ...

BATTERY UNIT

A battery unit including a battery, a circuit board, a switching device which achieves charge or discharge of the battery, and a casing made up of a bottom and a peripheral wall. The battery is disposed on the bottom. The circuit board is arranged farther away from the bottom than from the battery. The switching device is located closer to the bottom than the circuit board is. The switching device has a visible area visually or optically perceived, as inwardly facing inside the casing from outside the circuit board, and includes a data-retaining area on which data on characteristics of the switching device is provided, for example, in the form of a code. This structure facilitates the ease with which the data on the characteristics of the switching device is visually or optically read out of the data-retaining area without having to have an increased size of the battery unit. 1. A battery unit comprising:a battery;a storage casing which includes a bottom and a peripheral wall, the bottom and the peripheral wall defining an inner space in which the battery is disposed;a circuit board which is disposed inside the storage casing and on which a controller is mounted to control input or output of electrical power to or from the battery, the circuit board having an outer surface facing outside the storage casing and an inner surface facing the bottom of the storage casing, anda switching device which works to open or close an electrical power path leading to the battery in response to a switching signal outputted from the controller,wherein the battery is disposed on the bottom, the circuit board being arranged farther away from the bottom than from the battery,the switching device is arranged behind the circuit board within the storage casing, as viewed facing towards an interior of the storage casing from outside the outer surface of the circuit board, anda visible area is defined inside the storage casing, the visible area being exposed outside the circuit board to ...

Sensing Assembly, Manufacturing Method for Thereof and Battery Module Comprising the Same

Provided are a sensing assembly and a battery module including the same, having improved economical efficiency in such a manner that a relatively expensive flexible printed circuit board is used in a smaller amount by allowing a relatively inexpensive rigid printed circuit board to replace a portion of the flexible printed circuit board used for a conventional sensing assembly. 1. A sensing assembly comprising:a first substrate made of a rigid printed circuit board and including at least one first terminal formed on its one surface;a second substrate made of a flexible printed circuit board and including at least one sensing line electrically bonded to the first terminal; anda first electrical bonding portion formed between one end of the second substrate and the first substrate to electrically bond the sensing line and the first terminal to each other.2. The sensing assembly of claim 1 , wherein the first electrical bonding portion is a soldering portion formed using soldering.3. The sensing assembly of claim 1 , wherein the first electrical bonding portion is a bonding portion formed using an electroconductive film.4. The sensing assembly of claim 1 , wherein the first electrical bonding portion is a welding portion formed using ultrasonic welding or laser welding.5. The sensing assembly of claim 1 , wherein the first substrate further includes a second terminal formed on its one surface claim 1 , andthe sensing assembly further includes:a sensing leg having one end electrically bonded to the second terminal; anda second electrical bonding portion formed on the one surface of the first substrate to electrically bond the second terminal and the sensing leg to each other.6. The sensing assembly of claim 5 , wherein the second electrical bonding portion is a soldering portion formed using soldering.7. The sensing assembly of claim 5 , wherein the second electrical bonding portion is a bonding portion formed using an electroconductive film.8. The sensing assembly of ...

BATTERY MODULE ASSEMBLY

A battery module assembly includes a plurality of cells, a plurality of cartridges including a first cartridge (a cartridge A) and a second cartridge (a cartridge B) alternately stacked with a corresponding cell therebetween, and a caulking pipe inserted into a through hole provided in a corner of each of the stacked plurality of cartridges, for assembling the plurality of cartridges. A bus bar among main elements configuring a voltage sensing assembly is disposed in a frame configuring a short side among four frames configuring the first cartridge, and a sensing wire among the main elements configuring the voltage sensing assembly is disposed in two frames configuring a short side and one frame configuring a long side among four frames configuring the second cartridge. 1. A battery module assembly comprising:a plurality of cells;a plurality of cartridges stacked in a vertical direction with a corresponding cell therebetween; anda caulking pipe inserted into a through hole provided in a corner of each of the stacked plurality of cartridges, for assembling the plurality of cartridges,wherein a bus bar and a sensing wire configuring a voltage sensing assembly are included in each of a first cartridge (a cartridge A) and a second cartridge (a cartridge B) among the plurality of cartridges assembled by the caulking pipe.2. The battery module assembly of claim 1 , wherein{'b': 1', '2', '3', '4, 'the first cartridge (the cartridge A) is provided in a rectangular shape which includes a front frame F and a rear frame F configuring a short side thereof and two side frames F and F configuring a long side thereof, and'}{'b': '2', 'the bus bar is provided in the rear frame F.'}3. The battery module assembly of claim 1 , wherein{'b': 1', '2', '3', '4, 'the first cartridge (the cartridge A) is provided in a rectangular shape which includes a front frame F and a rear frame F configuring a short side thereof and two side frames F and F configuring a long side thereof, and'}the bus ...

Apparatus and Method for Managing Battery

A cell management controller including a first antenna capable of communicating with an external device using a first frequency a second antenna capable of receiving a signal of a second frequency from the external device, a voltage generation unit configured to generate a voltage based on the signal of the second frequency received at the second antenna; a driving unit configured to receive a signal based on a voltage generated by the voltage generation unit as an enable signal, and a cell parameter measurement unit configured to measure a parameter indicating a state of a battery cell based on a control signal from the driving unit, wherein the driving unit transitions from a standby state to a wake-up state based on the enable signal.

BATTERY MONITORING APPARATUS

A battery monitoring apparatus includes a circuit board, a signal control unit configured to cause a predetermined AC signal to be outputted from a storage battery through a first electrical path, a response signal input unit configured to input, through a pair of second electrical paths, a response signal of the storage battery to the AC signal, and a calculating unit configured to calculate, based on the response signal, a complex impedance of the storage battery. The first and second electrical paths are provided on a major face of the circuit board. On the circuit board, there is defined a first region which is surrounded by the first and second electrical paths and two terminals of the storage battery. The size of the first region is set to have an electromotive force, which is induced in the second electrical paths by the AC signal, be within an allowable electromotive-force range. 1. A battery monitoring apparatus for monitoring a state of a storage battery , the storage battery having a positive-electrode-side electric power supply terminal and a negative-electrode-side electric power supply terminal ,the battery monitoring apparatus comprising:a planar circuit board arranged between the positive-electrode-side and negative-electrode-side electric power supply terminals of the storage battery;a signal control unit provided in a first electrical path that connects the positive-electrode-side and negative-electrode-side electric power supply terminals of the storage battery, the signal control unit being configured to cause a predetermined AC signal to be outputted from the storage battery through the first electrical path;a response signal input unit connected with the positive-electrode-side and negative-electrode-side electric power supply terminals of the storage battery respectively via a pair of second electrical paths, the response signal input unit being configured to input, through the pair of second electrical paths, a response signal of the storage ...

Monitoring a state variable of at least one battery cell of a battery

A method for monitoring a state variable of at least one battery cell of a battery. The battery has at least two battery cells that are arranged adjacent to one another. A first electrically conductive surface is provided at a boundary surface of a first battery cell and a second electrically conductive surface is provided at a boundary surface of a second battery cell. The electrically conductive surfaces are arranged electrically insulated from each other. An electrical voltage is applied between the two electrically conductive surfaces. An electrical variable produced due to an effect of the electrical voltage is analyzed. The state variable on the basis of the analysis is determined.

Electrical energy storage system with battery resistance estimation

An electrical energy storage system includes a battery container, one or more temperature sensors, and a controller. The battery container includes one or more batteries configured to store and discharge electrical energy. The temperature sensors are configured to measure one or more temperatures associated with the battery container. The controller is configured to estimate a rate of heat generation by the one or more batteries based on the measured temperatures, monitor an electric current provided to the one or more batteries, and estimate a resistance of the one or more batteries based on the estimated rate of heat generation and the electric current.

Vehicle Battery Pack and Battery Exchange System

The vehicle battery pack exchange system shown here charges renters for the time use interval, the energy needed to recharge the battery pack, and the battery wear their use has caused. Data on battery wear accelerating stress parameters such as current, voltage, temperature, and state of charge is collected for battery packs rented to vehicle users. Wear rates are estimated from the collected data. Then either users are charged for the wear they cause or wear is limited to some predetermined wear rate and users are charged a predetermined battery wear fee. In either embodiment drivers are displayed information to adapt their driving to battery wear rates. Renters are charged for battery pack usage time, energy supplied by the rental station, and battery wear providing battery owners a secure return on their investment. This system accommodates both short term and sustained long term rentals. Long term rental of a single battery pack for local use gives convenience and low costs while short term rentals provide unlimited range via swapping exhausted packs for recharged units during extended travel.

Operating conditions information system for an energy storage device

The system may be configured to perform operations including measuring a temperature and a voltage of a battery at various times producing data points, wherein each data point comprises the temperature and voltage of the battery and a respective time that the temperature and voltage was measured; assigning each data point to a respective cell in a matrix stored on a, wherein the matrix comprises a first axis comprising voltage ranges and a second axis comprising temperature ranges, wherein each cell is associated with a voltage range and a temperature range, wherein the voltage and temperature of each data point is within the voltage range and temperature range, respectively, of the respective cell; and/or generating a first value in a counter comprised in each cell reflecting a total number of data points assigned to the cell, such that the first value in each cell is stored in the memory.

Systems and methods for determining a state of charge of a disconnected battery

A method is disclosed for determining a state of charge, a self-discharge rate, and a predicted amount of time remaining (tREMX) until the battery will self-discharge to a pre-determined minimum state-of-charge (SOCmin) under storage or transit conditions, in a disconnected battery. The method further discloses calculating a time to recharge the battery (ReChargeTime) from its current SOC to a desired SOC. A battery monitor circuit, embedded or attached to a battery, monitors an instantaneous internal temperature (Tx) and a voltage (Vx) of a disconnected battery to perform the analysis and provide notification, scheduling, and take other actions. In an example embodiment, the method further comprises displaying this determined battery information on the remote device without any physical connection between the remote device and the battery.

Monitoring device

A monitoring device includes a monitoring section and a wiring section for electrically connecting the monitoring section and a battery cell. A first and a second electrode terminal groups are reversely arranged. The wiring section includes a first wiring section for electrically connecting the first electrode terminal group and the monitoring section, and a second wiring section for electrically connecting the second electrode terminal group and the monitoring section. The first wiring section has a first substrate and a first wiring pattern, and the second wiring section has a second substrate and a second wiring pattern. The second substrate has a lateral connecting space where a first end side of the second wiring pattern is disposed and a longitudinal connecting space where a second end side of the second wiring pattern is disposed, and the second substrate is bent such that the spaces are opposed to each other.

ELECTRICAL ENERGY STORAGE SYSTEM COMPRISING A CROSS-CONNECTION OF A PLURALITY OF PARALLEL ENERGY STORAGE STRINGS THAT IS ELECTRICALLY CONDUCTIVELY CONNECTED TO A CURRENT DETECTION MEANS VIA A DIODE, AND METHOD FOR DETECTING A CONDUCTION FAULT

Electrical energy storage system (), comprising at least two strings (STR, STR, STR) interconnected in parallel connection, wherein the strings each have at least two electrical energy storage units () interconnected in series connection, characterized in that at least one first electrically conductive cross-connection () between electrical energy storage units () at an identical first electrical potential in the strings (STR, STR, STR) interconnected in parallel connection is electrically conductively connected via at least one diode () to a means for detecting an electric current () and a controllable electrical energy source (), wherein the diode () is not incorporated into the first electrically conductive cross-connection (). 11. An electrical energy storage system () , comprising:{'b': 1', '2', '3', '1', '2', '3', '15', '11', '15', '1', '2', '3', '12', '13', '13', '14', '12', '11, 'at least two strings interconnected in parallel (STR, STR, STR) and are at an identical first electrical potential, the at least two strings (STR, STR, STR) each comprising at least two electrical energy storage units () interconnected in series, wherein at least a first electrically conductive cross-connection (), between electrical energy storage units () in the strings (STR, STR, STR), is electrically conductively connected, via at least one diode (), to a current sensor () configured to detect an electric current () and a controllable electrical energy source (), wherein the diode () is separate from the first electrically conductive cross-connection ().'}2111122115123. The electrical energy storage system () as claimed in claim 1 , wherein the at least one first electrically conductive cross-connection () is electrically conductively connected claim 1 , via the at least one diode () claim 1 , to at least a second electrically conductive cross-connection () claim 1 , between electrical energy storage units () in the strings (STR claim 1 , STR claim 1 , STR) which are ...

BATTERY MONITORING DEVICE

A connection part which connects a terminal part and a processing part include an equalization resistor that is inserted into each main line and a 0-Ω resistor that is a short circuit line for short circuiting a main line of a first terminal and a main line of a second terminal. In the terminal part, the second terminal s unused, and a battery cell adjacent to a high-potential side of a stack bar is connected between the first terminal and a third terminal. 1. A battery monitoring device comprising:a terminal part having M+1 connection terminals, where M is a positive integer of 3 or more, wherein a stack bar, which is a bus bar for mutually connecting battery stacks, or a plurality of battery cells, is connected between the respective connection terminals so that the battery cells are connected in series;{'sup': th', 'th, 'a processing part having M processing blocks which are each provided for each adjacent terminal pair, where i is 1≤i≤M and that the adjacent terminal pair is a set of the iconnection terminal and the i+1connection terminal, wherein the M processing blocks each have a processing circuit that executes processing according to the terminal-to-terminal voltage of the adjacent terminal pair and a short circuit switch that short-circuits or disconnects the connection terminals of the adjacent terminal pair; and'}a connection part which connects the terminal part and the processing part, whereinin a stack connection pair which is the adjacent terminal pair to which the stack bar is connected, the connection terminal positioned on a high-potential side is defined as a first terminal, the connection terminal positioned on a higher-potential side than the first terminal and forming the adjacent terminal pair together with the first terminal is defined as a second terminal, and the connection terminal positioned on a higher-potential side than the second terminal and forming the adjacent terminal pair together with the second terminal is defined as a third ...

SYSTEM AND METHOD FOR DIAGNOSING LOW-VOLTAGE BATTERY STATE

A system and a method of diagnosing a state of a low-voltage battery, in which, in order to diagnose the state of a low-voltage battery (12V aux battery) provided at a low-voltage side, a daisy chain circuit unit receives a voltage from the low-voltage battery and outputs one or more result signals, and an isolator unit, which electrically insulates a high-voltage side and the low-voltage side, converts the outputted one or more result signals and provides the converted signals to a control unit, thereby diagnosing a state of the low-voltage battery at the low-voltage side by using the control unit provided at the high-voltage side. 1. A system for diagnosing a state of a low-voltage battery , the system comprising:a daisy chain circuit unit configured to receive a voltage from the low-voltage battery, and output one or more result signals based on the received voltage and a first reference voltage;an isolator unit configured to receive the one or more result signals, and convert the one or more received result signals; anda control unit configured to receive the one or more converted result signals and diagnose the state of the low-voltage battery,wherein the daisy chain circuit unit is provided at a low-voltage side including the low-voltage battery, and the control unit is provided at a high-voltage side including a high-voltage battery.2. The system of claim 1 , wherein the isolator unit is located between the daisy chain circuit unit and the control unit claim 1 , and insulates and electrically isolates the daisy chain circuit unit and the control unit.3. The system of claim 1 , wherein the daisy chain circuit unit includes a reference voltage setting unit configured to:set the first reference voltage, andadjust a size of the first reference voltage based on one or more of a size and a kind of signal input to the daisy chain circuit unit.4. The system of claim 1 , wherein the isolator unit includes:a coupler unit configured to convert the one or more received ...

SECONDARY BATTERY STATIC PRESSURE JIG AND SECONDARY CELL INTERNAL PRESSURE CONTROL METHOD USING THE SAME

A secondary battery static pressure jig and a secondary cell internal pressure control method using the same is provided. The secondary battery static pressure jig, includes: a supporting member disposed on both surfaces of a battery cell to support the battery cell; a piezoelectric element that is disposed on at least one of surfaces of the supporting member and the battery cell contacting each other and measures a pressure applied to the battery cell; and a controlling part that controls a volume of the piezoelectric element according to the pressure measured by the piezoelectric element, wherein a volume of the piezoelectric element may be changed according to the volume change of the battery cell, and the pressure applied to the battery cell from the supporting member by the volume change of the piezoelectric element may be made to be a constant pressure. 1. A secondary battery static pressure jig , comprising:a supporting member disposed to support opposite surfaces of a battery cell to apply pressure to the battery cell;a piezoelectric element disposed between a surface of the supporting member and one of the opposite surfaces of the battery cell contacting each other to measure a pressure applied to the battery cell; anda controller configured to control a volume of the piezoelectric element according to the pressure measured by the piezoelectric element,wherein the volume of the piezoelectric element is changed according to a volume change of the battery cell, andwherein the pressure applied to the battery cell by the supporting member is made to be a constant pressure by a volume change of the piezoelectric element.2. The secondary battery static pressure jig of claim 1 , wherein the controller includes:a converter configured to convert a pressure value measured by the piezoelectric element into a first voltage signal;a calculator configured to calculate a second voltage signal for changing the battery cell to an initial pressure state using the first ...

Semiconductor device and battery pack

A semiconductor device that detects deterioration of a secondary battery is provided. The semiconductor device includes a power gauge, an anomalous current detection circuit, and a control circuit. The power gauge includes a current divider circuit and an integrator circuit. The anomalous current detection circuit includes a first memory, a second memory, and a first comparator. The integrator circuit can convert a detection current detected at the current divider circuit into a detection voltage by integrating the detection current. The anomalous current detection circuit is supplied with the detection voltage, a first signal at a first time, and a second signal at a second time. The first signal can make the detection voltage at the first time be stored in the first memory and the second signal can make the detection voltage at the second time be stored in the second memory. The first comparator outputs a change from the detection voltage at the first time to the detection voltage at the second time as a first output signal to the control circuit.

Systems and methods for detecting battery theft

Described herein are method and systems for detecting an unauthorized removal of a battery. The system comprising: a battery monitor circuit attached to or embedded in the battery; a remote device, wherein the remote device stores instructions that when executed on the remote device cause the remote device to perform operations comprising: receiving, at the remote device, a wireless signal from the battery monitor circuit comprising voltage and temperature data; evaluating, by the remote device, whether the battery is in its expected location by confirming for each battery, which is expected to be present, whether there has been an unexpected interruption in the wireless signal from the battery; providing an alert notification when there has been an unexpected interruption in the wireless signal.

VENT SHIELD FOR A BATTERY MODULE

The present disclosure relates generally to a battery module having a housing and a stack of battery cells disposed in the housing. Each battery cell has a battery cell terminal and a battery cell vent on an end of each battery cell, and the battery cell vent is configured to exhaust effluent into the housing. The battery module has a vent shield plate disposed in the housing and directly along an immediate vent path of the effluent, a first surface of the vent shield plate configured to direct the effluent to an opening between the shield plate and the housing, and a second surface of the vent shield plate opposite the first surface. The battery module also has a venting chamber coupled to the opening and at least partially defined by the second surface and a vent configured to direct the effluent out of the battery module. 19-. (canceled)10. A battery module , comprising:a housing;a receptacle of the housing configured to receive a stack of battery cells, wherein each battery cell of the stack of battery cells has an end comprising a battery cell terminal and a battery cell vent, and the battery cell vent is configured to exhaust battery cell effluent;an integrated sensing and bus bar subassembly positioned directly along a vent path of the battery cell effluent;a vent shield plate of the integrated sensing and bus bar subassembly, wherein the vent shield plate comprises a first surface and a second surface, and wherein the first surface is configured to absorb kinetic energy and thermal energy from the battery cell effluent and to direct the battery cell effluent to an opening in the integrated sensing and bus bar subassembly; anda module cover disposed over the integrated sensing and bus bar subassembly and against the housing, wherein the module cover and the second surface of the vent shield plate at least partially define a venting chamber configured to receive the battery cell effluent after the battery cell effluent has passed through the opening, and ...

AUTOMATIC CHARGER

A sorting mechanism includes a flap that selects a first path connecting from a battery outlet of a charging section to a battery inlet of a first compartment section as a path to introduce a first battery to the first compartment section in a case of housing the first battery in the first compartment section, and that selects a second path connecting from the battery outlet of the charging section to a battery inlet of a second compartment section as a path to introduce a second battery to the second compartment section in a case of housing the second battery in the second compartment section. 1. An automatic charger comprising:a battery throwing section into which a plurality of batteries are thrown;a charging section that executes a charging operation to the plurality of batteries thrown into the battery throwing section;a detecting section that detects a state of each of the plurality of batteries that are targets of the charging operation by the charging section;a processing unit that distinguishes, among the plurality of batteries, between a first battery satisfying predetermined charging properties, and a second battery other than the first battery, based on a detection result of each of the plurality of batteries by the detecting section; anda battery compartment including a first compartment section that houses the first battery, a second compartment section that houses the second battery, and a sorting mechanism that introduces the first battery to the first compartment section, and introduces the second battery to the second compartment section, in accordance with a distinguishing result of each of the plurality of batteries in the processing unit,wherein the sorting mechanism includes a flap that selects a first path connecting from a battery outlet of the charging section to a battery inlet of the first compartment section as a path to introduce the first battery to the first compartment section in order to house the first battery in the first ...

Management device, electric storage device, electric storage system and electric apparatus

Included are: an equalization unit which equalizes voltages of a plurality of electric storage cells; and an electricity sending/receiving unit which, without disconnecting or shifting an electrical connection between (a) the plurality of electric storage cells and (b-1) a load which uses electric power of the plurality of electric storage cells or (b-2) a charging device which charges the plurality of electric storage cells, (i) sends electric power of the plurality of electric storage cells to an external apparatus which is different from the load and the charging device, or (ii) receives electric power supplied to the plurality of electric storage cells from the external apparatus.