WO2011148907A1 - Dispositif d'alimentation électrique - Google Patents

Dispositif d'alimentation électrique Download PDF

Info

Publication number
WO2011148907A1
WO2011148907A1 PCT/JP2011/061784 JP2011061784W WO2011148907A1 WO 2011148907 A1 WO2011148907 A1 WO 2011148907A1 JP 2011061784 W JP2011061784 W JP 2011061784W WO 2011148907 A1 WO2011148907 A1 WO 2011148907A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
power supply
detection circuit
battery pack
supply device
Prior art date
Application number
PCT/JP2011/061784
Other languages
English (en)
Japanese (ja)
Inventor
玉井　幹隆
勝弘 笹山
山口　昌男
賢一 森名
孝之 三野
Original Assignee
三洋電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三洋電機株式会社 filed Critical 三洋電機株式会社
Priority to CN2011800210610A priority Critical patent/CN102859835A/zh
Publication of WO2011148907A1 publication Critical patent/WO2011148907A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H02J7/0018—Circuits for equalisation of charge between batteries using separate charge circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/448—End of discharge regulating measures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a large-capacity power supply device in which a plurality of battery packs are connected in parallel to increase output current.
  • a power supply device has been developed that increases the output current and capacity by connecting multiple battery packs in parallel. (See Patent Document 1).
  • the power supply device described in the publication of Patent Document 1 has a plurality of battery packs connected in parallel to increase the output capacity.
  • the battery packs connected in parallel form a battery block 92 by connecting a plurality of battery cells 91 in series.
  • the battery block 92 is connected to the output terminal 95 via a charge / discharge FET 94 that controls charge / discharge in order to prevent overcharge and overdischarge.
  • a charge / discharge FET 94 an FET for controlling the charge current and an FET for controlling the discharge current are connected in series.
  • Each FET is controlled by a control circuit 93 that detects the state of the battery block 92. When the charged battery block 92 is fully charged, the control circuit 93 switches over the FET that controls the charging current to prevent overcharging.
  • the FET for controlling the discharge current is switched off to prevent overdischarge.
  • 1 can increase the output capacity as a power supply device by connecting the output terminals 95 in parallel to each other. 1 is connected in parallel to a specific battery pack as a master battery pack, other battery packs as slave battery packs, and information on slave battery packs as master battery packs. Transmitting and preventing overcharging and overdischarging of the battery cells in a state where the battery packs are connected in parallel. When the battery block of any battery pack is overcharged or overdischarged, this power supply device switches the charge / discharge FET provided in each battery pack to OFF to overcharge the battery block. And prevent over-discharge.
  • the output terminal 95 is connected in parallel, the output terminal 95 is connected to a load, the battery block 92 is discharged, and the output terminal 95 is connected.
  • a battery charger 92 is connected to charge the battery block 92. That is, the output terminal 95 is used in combination with the charging terminal and discharging terminal of the battery block 92.
  • the power supply device having this structure when the discharge current becomes large, it is necessary to use an expensive FET that can withstand a large current as the charge / discharge FET 94, and the cost of the parts increases.
  • a power supply device in which a plurality of battery packs are connected in parallel to increase the output current is characterized by being able to discharge the load with a large current.
  • the peak value of the discharge current such as an electric motorcycle, etc. Is ideal for applications where the However, a battery pack that can be used for a high-current load needs to increase the current capacity of the charge / discharge FET, which increases the component cost.
  • the adverse effect is that a charging terminal 76 and a discharging terminal 75 are provided separately, and a battery block 72 is connected to the charging terminal 76 via a switching element 74 such as an FET.
  • a switching element 74 such as an FET.
  • the battery pack 70 having the circuit configuration of FIG. 2 can increase the output current by connecting the discharge terminals 75 in parallel. Further, the power supply device can charge the battery blocks 72 of all the battery packs 70 by connecting the charger 20 to the charging terminal 76 of the master battery pack 70 ⁇ / b> A to which the chargers 20 are connected. However, in this power supply device, the battery block 72 of the slave battery pack 70B to which the charger 20 is not connected bypasses the built-in switching element 74 and is connected to the charger 20 via the switching element 74 of the master battery pack 70A. Circuit configuration. The battery block 72 of the slave battery pack 70B charged in this state turns off the switching element 74 of the master battery pack 70A even if any of the battery cells 71 constituting the battery block 72 is overcharged.
  • this problem is caused by a circuit configuration in which a diode 87 is connected between the battery block 72 and the discharge terminal 75 and the charger 20 is connected to the charge terminal 76 of each battery pack 80 for charging.
  • the diode 87 blocks the charging current from flowing from the charger 20 connected to the master battery pack 80A to the battery block 72 of the slave battery pack 80B to which the charger 20 is not connected.
  • this power supply device needs to connect the charger 20 to the charging terminal 76 of each battery pack 80 in order to charge all the battery packs 80, there is a drawback that it takes time to charge the battery packs 80. .
  • this power supply device is provided with a high-current diode in the battery pack, there is a problem that the cost of parts increases and the power loss due to the voltage drop of the diode also increases. Furthermore, in order to dissipate the diode that generates heat when a large current flows, it is necessary to provide a radiator having a large heat dissipation area, which further increases the component cost.
  • the present invention has been developed for the purpose of further solving this drawback.
  • An important object of the present invention is that it can charge each battery block by connecting a charger to the charging terminal of one battery pack while omitting the large current diode connected to the discharging terminal to reduce the component cost. And it is providing the power supply device which can charge a battery pack, preventing the overcharge of the battery cell which comprises each battery block.
  • Another important object of the present invention is to charge one of the battery packs by charging while preventing overcharging of the battery cells constituting all the battery blocks with a switching element incorporated in the specific battery pack.
  • An object of the present invention is to provide a power supply device that can normally charge all battery blocks even if a switching element fails.
  • the power supply device of the present invention includes a plurality of battery packs 10 connected in parallel to each other and supplying power to a load.
  • Each battery pack 10 includes a battery block 2 formed by connecting a plurality of battery cells 1 in series, a detection circuit 3 that detects a charge stop state of each battery cell 1 and outputs a charge stop signal, and this detection A switching element 4 controlled to be turned on and off by the circuit 3, a discharge terminal 5 connected to the battery block 2 without a diode, a charging terminal 6 connected to the battery block 2 via the switching element 4, And a communication circuit 7 for transmitting a charge stop signal detected by the detection circuit 3 to the detection circuit 3 of another battery pack 10.
  • Each battery pack 10 connects the communication circuit 7 to each other, and connects the discharge terminals 5 in parallel without connecting the charge terminals 6 to each other.
  • the charging current of the charger 20 connected to the charging terminal 6 of the specific battery pack 10A passes through the switching element 4 of the battery pack 10A connected to the charger 20 and is connected in parallel. All the battery blocks 2 are charged by being supplied to the battery block 2 of another battery pack 10 ⁇ / b> B via the discharge terminal 5. Further, the power supply device outputs a charge stop signal when any one of the detection circuits 3 detects a charge stop state of the battery cell 1, and the output charge stop signal is transmitted via the communication circuit 7. Is transmitted to the detection circuit 3 of the battery pack 10A to which the charger 20 is connected, and the detection circuit 3 controls the switching element 4 to be OFF to stop charging.
  • the power supply device described above does not require the use of a large current diode with a large current capacity or a radiator with a large heat radiation area for cooling the diode, and can reduce the cost of components.
  • a charger is connected to the charging terminal of one battery pack, and while charging the battery blocks of all the battery packs, while preventing overcharging of the battery cells constituting each battery block, You can charge the battery pack.
  • the above power supply device uses a switching element built in the battery pack connected to the charger to charge all battery blocks without overcharging normally. Even if an element breaks down, all battery blocks can be charged normally. This is because all the battery packs can be charged by connecting the charger to the battery pack of the switching element that operates normally without connecting the charger to the battery pack in which the switching element has failed.
  • the battery constituting the battery cell 1 is a lithium ion battery
  • the detection circuit 3 can detect the voltage of the battery cell 1 to detect the charge stop state. Since the above power supply apparatus uses a lithium ion battery as the battery constituting the battery cell, it can detect the voltage of the battery cell and accurately detect the charge stop state. Therefore, each battery pack can be charged while preventing overcharging of all battery cells.
  • the battery cell 1 can connect a plurality of unit cells in parallel.
  • a plurality of unit cells are connected in parallel to form a battery cell, and further, this battery cell is connected in series to form a battery block, so that the maximum current that can be discharged by the battery block is large and the battery block Can increase the output of the battery pack.
  • the total capacity of the battery packs 10 connected in parallel with each other can be set to 1 KVA to 100 KVA. Since the total capacity of the power supply device described above is as extremely large as 1 KVA to 100 KVA, it can be optimally used for applications requiring high output such as electric motorcycles and electric vehicles.
  • the switching element 4 can be an FET.
  • the switching element since the switching element is an FET, the electric resistance in the ON state can be reduced and the battery block can be charged efficiently.
  • each element constituting the present invention may be configured such that a plurality of elements are constituted by the same member and the plurality of elements are shared by one member, and conversely, the function of one member is constituted by a plurality of members. It can also be realized by sharing.
  • the contents described in some examples and embodiments may be used in other examples and embodiments.
  • FIG. 4 shows a power supply apparatus according to an embodiment of the present invention.
  • the power supply device shown in this figure includes a plurality of battery packs 10 connected in parallel to each other and supplying power to a load.
  • the power supply device of FIG. 4 has three sets of battery packs 10 connected in parallel.
  • the power supply device can increase the maximum current that can be output and increase the current capacity by increasing the number of battery packs 10 to be connected.
  • the power supply device of the present invention is most suitable for a high power source such as an electric motorcycle, a hybrid car, a plug-in hybrid car, an electric vehicle, an uninterruptible power supply, and the like.
  • the power supply device used as such a power supply adjusts the number of battery packs to be connected, so that the total capacity is 1 KVA to 100 KVA.
  • the power supply device of the present invention does not specify the total capacity, but adjusts the capacity of the battery pack itself or the number of battery packs connected in parallel to make it smaller or larger than the above total capacity. You can also.
  • Each battery pack 10 includes a battery block 2 in which a plurality of battery cells 1 are connected in series, a detection circuit 3 that detects a charge stop state of each battery cell 1 and outputs a charge stop signal, and this detection Switching element 4 controlled to be turned on and off by circuit 3, discharge terminal 5 connected to each battery block 2 without a diode, and charging terminal 6 connected to battery block 2 via switching element 4 And a communication circuit 7 for transmitting a charge stop signal detected by the detection circuit 3 to the detection circuit 3 of another battery pack 10.
  • the battery block 2 has battery cells 1 made of lithium ion batteries connected in series. However, any battery that can be charged, such as a nickel metal hydride battery or a nickel cadmium battery, can be used for the battery block in place of the lithium ion battery.
  • a plurality of unit cells are connected in parallel to form a battery cell 1, and the battery cells 1 are connected in series. Since the output current of the battery block 2 is specified by the current capacity of the battery cell 1, the output current can be increased by connecting a large number of unit cells in parallel.
  • the battery block 2 can adjust an output voltage with the number of battery cells 1 connected in series, and can increase the output voltage by increasing the number of battery cells 1.
  • the detection circuit 3 detects an overcharge of the battery cell 1 constituting the battery block 2 and outputs a charge stop signal, and controls the switching element 4 by this charge stop signal.
  • the detection circuit 3 detects the overcharge by detecting the voltage of each battery cell 1. This is because when the battery cell 1 is overcharged, the voltage becomes higher than the maximum voltage.
  • the detection circuit 3 stores a maximum voltage for determining whether the battery cell 1 is overcharged. The detected voltage of the battery cell 1 is compared with the maximum voltage, and when the voltage of the battery cell 1 exceeds the maximum voltage, it is determined that the charging is stopped, and a charging stop signal is output.
  • the detection circuit 3 can also detect the temperature of each battery cell 1 and output a charge stop signal.
  • the detection circuit 3 switches the switching element 4 to OFF with a charge stop signal for charging.
  • the battery pack 10 using the switching element 4 as an FET inputs a charge stop signal output from the detection circuit 3 to the gate of the FET, and switches the switching element 4 from ON to OFF to stop charging the battery block 2. Furthermore, the detection circuit 3 transmits a charge stop signal to be detected to the detection circuits 3 of the other battery packs 10 via the communication circuit 7.
  • the battery pack 10 shown in the figure includes a communication terminal 8 connected to the communication circuit 7, and the detection circuit 3 of each battery pack 10 is connected via the communication terminal 8.
  • the detection circuit 3 also switches the switching element 4 from ON to OFF in response to a charge stop signal input from the communication circuit 7 of another battery pack 10.
  • the detection circuit 3 of the battery pack 10B to which the charger is not connected may output a charge stop signal.
  • This charge stop signal is input to the detection circuit 3 of the battery pack 10 ⁇ / b> A connected to the charger 20 via the communication circuit 7.
  • the detection circuit 3 that detects a charge stop signal input from another battery pack 10B switches the switching element 4 from ON to OFF also by this signal, and stops the charging of all the battery blocks 2. Therefore, the battery pack 10 turns the switching element 4 from ON to OFF not only by its own charge stop signal detected by the detection circuit 3 but also by a charge stop signal input from another battery pack 10 connected in parallel. Switch.
  • Switching element 4 is an FET that cuts off the charging current.
  • the switching element 4 of the FET is controlled to be turned on / off by a signal input from the detection circuit 3 to the gate.
  • a switching element such as a transistor or a relay can be used instead of the FET.
  • the switching element of the transistor is controlled to be turned on / off by a base input signal, and the switching element of the relay is turned on / off by controlling energization of the exciting coil. Therefore, the switching element of the transistor inputs the charge stop signal to the base and switches the transistor from ON to OFF, and the switching element of the relay stops the energization of the exciting coil by the charge stop signal and switches from ON to OFF. It is done.
  • the switching element 4 is held in the ON state when the battery block 2 is charged.
  • the FET switching element 4 is controlled to be in the ON state by controlling the gate voltage
  • the transistor switching element is controlled to be in the ON state by controlling the base current
  • the relay is energized in the exciting coil and is maintained in the ON state.
  • the discharge terminal 5 is directly connected to the battery block 2 without going through the diode or the switching element 4.
  • an overcurrent of the battery block 2 can be prevented by connecting an element that cuts off the current due to overcurrent, such as a fuse or a breaker, in series with the battery block. .
  • the charging terminal 6 is connected to the battery block 2 via the switching element 4.
  • the positive charging terminal 6 is connected to the positive side of the battery block 2 via the switching element 4.
  • the switching element can also be connected to the charging terminal and the negative side of the battery block.
  • the communication circuit 7 transmits the charge stop signal output from the detection circuit 3 to the detection circuit 3 of another battery pack 10 connected in parallel to each other, and outputs from the detection circuit 3 of another battery pack 10.
  • the bidirectional communication circuit 7 inputs a charge stop signal to the detection circuit 3.
  • the power supply device of FIG. 4 allows the charging current of the charger 20 connected to the charging terminal 6 of the specific battery pack 10A to pass through the switching element 4 of the battery pack 10A connected to the charger 20 in parallel.
  • the battery block 2 of another battery pack 10B is supplied through the connected discharge terminal 5 to charge all the battery blocks 2. Therefore, this power supply device connects the charger 20 to the charging terminal 6 of one battery pack 10 to charge the battery blocks 2 of all the battery packs 10.
  • the switching element 4 When any one of the detection circuits 3 detects the charge stop state of the battery cell 1 with all the battery packs 10 charged, the switching element 4 is switched from ON to OFF by the charge stop signal, and all the batteries are Charging of block 2 is stopped.
  • the detection circuit 3 of the battery pack 10A connected to the charger 20 outputs a charge stop signal
  • the switching element 4 of the battery pack 10A is switched to OFF by this signal.
  • the detection circuit 3 of the battery pack 10B not connected to the charger 20 detects the charge stop signal
  • the charge stop signal is detected via the communication circuit 7 in the detection circuit 3 of the battery pack 10A connected to the charger 20. Is transmitted.
  • the detection circuit 3 to which the charge stop signal is transmitted controls the switching element 4 to be OFF, and stops the charging of all the battery blocks 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention concerne un dispositif d'alimentation électrique grâce auquel, alors que les coûts en composants sont réduits, un chargeur connecté à un pack de batterie charge chaque bloc de batterie, ceci tout en évitant que les cellules de batterie soient surchargées. Le dispositif d'alimentation électrique comprend plusieurs packs de batterie (10) connectés en parallèle. Chacun des packs de batterie (10) comprend : un bloc de batterie (2) comprenant plusieurs cellules de batterie (1) ; un circuit de détection (3) afin de détecter l'état d'arrêt de charge de chacune des cellules de batterie (1) ; une borne de décharge (5) connectée au bloc de batterie (2) ; une borne de charge (6) connectée via un élément de commutation (4) au bloc de batterie (2) ; et un circuit de communication (7). Les circuits de communication (7) respectifs des packs de batterie (10) sont connectés les uns aux autres, les bornes de charge (6) n'étant pas connectées les unes aux autres tandis que les bornes de décharge (5) sont connectées en parallèle. Dans ce dispositif d'alimentation électrique, lorsque l'un quelconque des circuits de détection (3) détecte un état d'arrêt de charge, un signal d'arrêt de charge est transmis par le circuit de communication (7) au circuit de détection (3) dans un pack de batterie (10A) auquel un chargeur (20) est connecté. Ce circuit de détection (3) effectue alors une commande de sorte que l'élément de commutation (4) est arrêté, interrompant ainsi la charge.
PCT/JP2011/061784 2010-05-24 2011-05-23 Dispositif d'alimentation électrique WO2011148907A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011800210610A CN102859835A (zh) 2010-05-24 2011-05-23 电源装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010118654A JP2011250519A (ja) 2010-05-24 2010-05-24 電源装置
JP2010-118654 2010-05-24

Publications (1)

Publication Number Publication Date
WO2011148907A1 true WO2011148907A1 (fr) 2011-12-01

Family

ID=45003897

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/061784 WO2011148907A1 (fr) 2010-05-24 2011-05-23 Dispositif d'alimentation électrique

Country Status (3)

Country Link
JP (1) JP2011250519A (fr)
CN (1) CN102859835A (fr)
WO (1) WO2011148907A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107276158A (zh) * 2017-06-22 2017-10-20 深圳拓邦股份有限公司 一种电流检测电路

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106183823A (zh) * 2016-07-08 2016-12-07 北汽福田汽车股份有限公司 车辆、高压控制系统及其控制方法
JP6733581B2 (ja) * 2017-03-08 2020-08-05 株式会社豊田自動織機 電池パック
WO2019022072A1 (fr) * 2017-07-24 2019-01-31 工機ホールディングス株式会社 Bloc-batterie et dispositif électrique utilisant un bloc-batterie
CN111555382A (zh) * 2020-04-17 2020-08-18 北汽福田汽车股份有限公司 一种电池系统及电池系统的控制方法、车辆

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000294298A (ja) * 1999-04-02 2000-10-20 Nec Mobile Energy Kk 複数電池パック電源装置
WO2007007655A1 (fr) * 2005-07-07 2007-01-18 Kabushiki Kaisha Toshiba Système de batterie
WO2009008314A1 (fr) * 2007-07-06 2009-01-15 Seiko Instruments Inc. Circuit de surveillance d'état de batterie et dispositif de batterie

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5174421B2 (ja) * 2007-10-19 2013-04-03 パナソニック株式会社 電池パック、及び電池システム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000294298A (ja) * 1999-04-02 2000-10-20 Nec Mobile Energy Kk 複数電池パック電源装置
WO2007007655A1 (fr) * 2005-07-07 2007-01-18 Kabushiki Kaisha Toshiba Système de batterie
WO2009008314A1 (fr) * 2007-07-06 2009-01-15 Seiko Instruments Inc. Circuit de surveillance d'état de batterie et dispositif de batterie

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107276158A (zh) * 2017-06-22 2017-10-20 深圳拓邦股份有限公司 一种电流检测电路

Also Published As

Publication number Publication date
CN102859835A (zh) 2013-01-02
JP2011250519A (ja) 2011-12-08

Similar Documents

Publication Publication Date Title
US20120025768A1 (en) Power supply device having precharging circuit for charging capacitor
US11165262B2 (en) Apparatus and method for preventing overcharge
US8294421B2 (en) Cell balancing systems employing transformers
JP5295962B2 (ja) 安全性を改良するためのバッテリー装置の制御方法
Cao et al. Batteries need electronics
KR101893045B1 (ko) 배터리용 충전 밸런싱 시스템
US9211800B2 (en) Battery system and control method of battery system
US7911179B2 (en) Charging/discharging apparatus
KR101182430B1 (ko) 배터리 팩
JP7130907B2 (ja) メインバッテリー及びサブバッテリーを制御するための装置、バッテリーシステム及び方法
US11502351B2 (en) Battery pack and control method thereof
KR20160099357A (ko) 배터리 팩 및 이를 포함하는 배터리 시스템
EP3314718B1 (fr) Circuit d'équilibrage de batterie
CN102782930A (zh) 电池控制装置和方法
US9434272B2 (en) Battery management system
JP2011101586A5 (fr)
WO2011148907A1 (fr) Dispositif d'alimentation électrique
JP2013230003A (ja) 電源装置、電源装置を備える車両及び蓄電装置並びに組電池の放電方法
KR20130045600A (ko) 배터리 팩 보호 장치 및 방법
JP2021515529A (ja) バッテリモジュールシステム及び方法
TW201445845A (zh) 並聯式放電調節裝置及其調節方法
KR102637753B1 (ko) 저전압릴레이를 갖는 스마트 pra와 이를 이용한 스마트 pra의 페일세이프티 시스템 및 방법
KR20230006166A (ko) 배터리 모듈

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 201180021061.0

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11786606

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11786606

Country of ref document: EP

Kind code of ref document: A1