CN106450517B - battery module combination system - Google Patents

battery module combination system Download PDF

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Publication number
CN106450517B
CN106450517B CN201610828251.8A CN201610828251A CN106450517B CN 106450517 B CN106450517 B CN 106450517B CN 201610828251 A CN201610828251 A CN 201610828251A CN 106450517 B CN106450517 B CN 106450517B
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China
Prior art keywords
battery
battery module
standard
circuit
breaker
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Active
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CN201610828251.8A
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Chinese (zh)
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CN106450517A (en
Inventor
吴红杰
王坚
许叶
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SHANGHAI JINENG POWER SYSTEMS Co Ltd
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SHANGHAI JINENG POWER SYSTEMS Co Ltd
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Priority to CN201610828251.8A priority Critical patent/CN106450517B/en
Publication of CN106450517A publication Critical patent/CN106450517A/en
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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48Accumulators combined with arrangements for measuring, testing or indicating condition, e.g. level or density of the electrolyte
    • H01M10/482Accumulators combined with arrangements for measuring, testing or indicating condition, e.g. level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/18Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The present invention provides a kind of battery module combination systems, including multiple standard battery modules and battery management system host computer;Wherein, the battery management system host computer connects the communication interface of the standard battery module;Battery pack is formed by series, parallel or serial-parallel mirror between multiple standard battery modules;Any standard battery module has a mechanical structure;It is detachably connected between adjacent standard battery module by mechanical structure.Plays battery module of the present invention has breaker and soft starting circuit; it can guarantee the safety of each standard battery module; better than the integrated battery group of the prior art; it is merely able to carry out open circuit protection to whole group battery; and battery module does not have breaker function, and operation cannot be switched over to battery module.

Description

Battery module combination system
Technical field
The present invention relates to battery packs, and in particular, to a kind of battery module combination system.
Background technique
The power generation such as electric vehicle, solar power generation energy storage device, wind power generation energy accumulation device, electric flux peak valley regulating device Or most of equipment being driven by electricity needs to carry out electric power storage, which uses battery module, such as lithium Battery, nickel-metal hydride battery, lead-acid battery etc., energy storage device are by tens to several hundred, thousands of a batteries by connecting or simultaneously Voltage required for the mode of connection reaches and power.
Usual battery cell extends capacity by way of in parallel, and after battery cell is in parallel, voltage is constant, and battery capacity increases Add, by the change of quantity in parallel, reaches the capacity of needs.Single battery extends voltage by concatenated mode.Battery series connection Quantity is more, and voltage is higher, and capacity is constant.Usual battery pack is then in series again by single battery parallel connection.Also the battery having Group first carries out series connection and reaches required voltage value, then in parallel to obtain desired capacity.
In addition, the safe operation in order to ensure battery, battery pack is usually with a protective device, protective device and electricity Monomer connection in pond judges the working condition of battery by the voltage of detection single battery, when cell voltage is too high or too low, The breaker for cutting off battery pack major loop, prevents battery overcharge or overdischarge to be damaged.
Known battery pack is that a breaker is arranged in major loop, and when breaker disconnects, entire battery pack cannot be right Outer output energy.Known battery pack is made of several modular batteries, and modular battery is directly in series or in parallel to form battery Group.
Publication No. CN104752639A includes in the patent of entitled power battery module:Battery containing assembly, battery Group, power connections, pneumatic connecting lines, wiring harness fastener and signal acquisition component, battery containing assembly includes multiple partitions, adjacent Partition be releasably attached.
Publication No. CN104377765A includes battery pack in the patent of entitled collecting and distributing type battery pack intelligence control system Management system and multiple battery packs, each battery pack include monitoring protective module and multiple battery cores, and multiple battery packs constitute electricity Pond group, monitoring protective module are used to acquire the information about power of battery pack and are uploaded to batteries management system in real time and to battery Packet carries out charge and discharge protecting, and batteries management system is used for the information about power that the multiple battery packs of real-time reception upload, and according to electricity Measure the battery remaining power that information calculates battery pack.
Application No. is CN200810184355.5, a kind of entitled battery pack with the circuit for being exclusively used in fault verification, Safety is improved with very simple circuit structure to determine failure.
Publication No. CN103296740A, a kind of entitled battery pack automatic switching method, including several battery modules, often A battery module includes battery management system and switch, and battery unit connects circuit bus by switching, in each battery module Battery management system by data/address bus interconnect, battery management system include acquire battery module information data acquisition Module, data comparison module and control module set predetermined value in data comparison module and by data collecting module collected The information of battery module is compared with the predetermined value of setting, and control module is according to the disconnection of the information control switch of data comparison module Or closure.It, can be under the premise of not changing control system for electric vehicle, using more after schemes described above A battery module is powered jointly, and to the consistency between modules and no requirement (NR), increases the compatibility of battery pack, together When can be avoided battery pack and overcharge or over-discharge, prolong the service life, save the cost.
Publication No. CN202405765U discloses one in the patent of the over system of entitled batteries in parallel connection group The over system of kind batteries in parallel connection group, the battery pack being connected in parallel with multiple groups and multiple overs Circuit, each battery pack are connected in series by more piece rechargeable battery, and battery pack is corresponding one by one to over-discharge protection circuit.The overdischarge Protect circuit include the discharge control switch connected between the output port and battery pack of battery pack, can by the voltage of battery with Setting voltage is compared and exports the overdischarge voltage detection department of comparison result, according to the defeated of the overdischarge voltage detection department Signal controls the overdischarge logic control portion of the discharge control switch on/off out.It is set when the voltage of any batteries is lower than When the voltage of fixed electric discharge limitation voltage or battery pack is lower than setting voltage, which can be automatically disconnected the circuit, Stop electric discharge, so that making any batteries all by the damage of overdischarge, will not ensure that the electric discharge safety of battery pack, extends The service life of battery pack.
Most of the battery pack of electric vehicle is the battery pack for needing to be designed to an entirety according to vehicle, battery electricity at present Pressure, capacity are all to customize, and aim at the design of some vehicle.Voltage is differed from 48V to 600V, and capacity is from 20Ah to 200Ah It is different.Even if by battery pack be made of several battery modules, but the size of battery module is also according to entire battery pack Size decouple design.There are the following problems for the design:1, the voltage and capacity of battery pack customize design, it is not easy to modify; 2, when some module of internal battery pack breaks down, whole group battery cannot work;3, to battery manufacturers, battery module Specification disunity, interchangeability is poor, needs multiple kinds of molds, and the development cycle is long, costly.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of battery module combination systems, using standard Change pond module to be made, each standardization pond module includes battery cell, mechanical structure, electrical cnnector, communication and control electricity Road, soft starting circuit and breaker.It standardizes between the module of pond through flexible configuration, form battery pack with can be convenient, meet Various electric vehicle required voltages, capacity and power.The output input circuit of battery module is controllable, such as when some battery Module breaks down, it can be provided exits, other modules can also continue to work, so that entire battery pack can also continue to Work.The present invention can be configured flexibly and be assembled into voltage range in the battery pack of 12V to 1000V, the capacity of battery pack It can be configured flexibly and be assembled into the random capacity of 10Ah or more.
The combination of standard battery module includes three aspects:Mechanical connection between standard battery module, standard battery module Between serial or parallel connection electrical connection, communication and control between standard battery module.Specifically, battery pack is by multiple marks Quasi- group of battery modules is combined composition, and wherein the mechanical connection of intermodule is to solve to be stacked between battery module, dissipate Heat, anti-vibration, shock proof problem;Electrical connection is to solve the problems, such as that battery module electric current transmits, i.e., high-power electric current transmission Circuit, collector connection, connector design etc.;Function, the safety of communication and control for solution battery module during the work time It protects and the problem that prolongs the service life.
The battery module combination system provided according to the present invention, including on multiple standard battery modules and battery management system Position machine;
Wherein, the battery management system host computer connects the communication interface of the standard battery module;Multiple standard electrics Battery pack is formed by series, parallel or serial-parallel mirror between the module of pond;
Any standard battery module has a mechanical structure;Pass through mechanical structure between adjacent standard battery module It is detachably connected.
Preferably, engaged broached-tooth design is provided in the mechanical structure;Broached-tooth design is used for normal cell Module links together;
It is provided with the locking structure with anti-vibration on the mechanical even structure, locking structure is for preventing standard battery module Because vibration disengages.
Preferably, the power take-off of the battery pack connects the collector.
Preferably, the standard battery module includes breaker, soft starting circuit, battery cell and communication and control electricity Road;
The battery management system host computer connects the communication and control circuit by the communication interface;
The communication and control circuit are electrically connected the control terminal of the breaker, the soft starting circuit;
The breaker, the soft starting circuit are in parallel;
The positive terminal of the battery cell connects one end of the breaker, the soft starting circuit, the breaker, institute The other end for stating soft starting circuit connects the cathode interface or collector of another standard battery module.
Preferably, the quantity of the battery cell is multiple;
Multiple battery cells are connected in series.
It preferably, further include voltage and current temperature sensing circuit;
Wherein, the voltage and current temperature sensing circuit, for detecting the voltage, electric current, temperature information of battery cell;
The voltage and current temperature sensing circuit is electrically connected the communication and control circuit.
Preferably, the breaker uses relay or double MOS circuits;
The soft starting circuit is made of switch or metal-oxide-semiconductor control one resistance of series connection.
Preferably, each standard battery module is provided with anode interface and cathode interface;
It is detachably connected to form battery pack by anode interface, cathode interface between multiple standard battery modules.
Compared with prior art, the present invention has following beneficial effect:
1, Plays battery module of the present invention has breaker and soft starting circuit, can guarantee each normal cell mould The safety of block is merely able to carry out open circuit protection to whole group battery better than the integrated battery group of the prior art, and battery module is not Have the function of breaker, operation cannot be switched over to battery module;
2, the dimensions of standard battery module of the invention have the characteristics that serializing, it is standardized, interchangeability is good, large quantities of It is low to measure production cost;
3, the voltage, power for the battery pack that standard battery module of the invention is combined into can be with flexible configurations, according to vehicle Selection is equipped with, and is conducive to the personalized designs of electric vehicle;
4, in the battery pack of standard battery module of the invention composition, when in case of some module failure, other moulds Block can still maintain battery pack downrating, avoid whole group battery catastrophic failure, avoid automotive power from losing suddenly dynamic Power and fall into danger;
5, the present invention is able to carry out the replacement of battery pack internal standard battery module, can increase or decrease as needed at any time Work of a certain number of battery modules without influencing whole group battery;
6, Plays battery module of the present invention is detachable, so as to take out battery module, is full of in ground charging station It is linked into battery pack again after electricity;
7, standard battery module of the invention is replaceable, when the battery capacity of vehicle is low, can arrive charging station replacement Fill with the battery module of electricity.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention, Objects and advantages will become more apparent upon:
Fig. 1 is the structural schematic diagram of Plays battery module of the present invention;
Fig. 2 is a kind of structural schematic diagram of battery module combination system in the present invention;
Fig. 3 is another structural schematic diagram of battery module combination system in the present invention;
Fig. 4 is the control flow chart of battery module combination system in the present invention.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention Protection scope.
In the present embodiment, battery module combination system provided by the invention, including multiple standard battery modules and battery Management system host computer;
Wherein, the battery management system host computer connects the communication interface of the standard battery module;Multiple standard electrics Battery pack is formed by series, parallel or serial-parallel mirror between the module of pond;
Any standard battery module has with mechanical structure;Pass through mechanical structure between adjacent standard battery module It is connected.
Engaged broached-tooth design is provided in the mechanical structure, for standard battery module to link together; The locking structure with anti-vibration is provided on the mechanical even structure, locking structure is for preventing standard battery module de- because vibrating It opens.
The power take-off of the battery pack connects the collector.Collector can be adjusted according to current path and size Conductive cross-sectional area, so that internal resistance is small, calorific value is low.
The standard battery module includes breaker, soft starting circuit, battery cell and communication and control circuit;It is described Battery management system host computer connects the communication and control circuit by the communication interface;The communication and control circuit electricity Connect the control terminal of the breaker, the soft starting circuit;The breaker, the soft starting circuit are in parallel;
The positive terminal of the battery cell connects one end of the breaker, the soft starting circuit, the breaker, institute The other end for stating soft starting circuit connects the negative pole end or collector of another standard battery module.
The actuation and cutting of breaker can control the power input and output of the mark battery module, play protection battery The purpose of monomer, the actuation and dissection of breaker are judged and are executed by communication and control circuit.
Breaker be one kind can charge-discharge circuit, the charging and discharging of standard battery module all pass through the same electrical connection Interface.
Soft starting circuit also avoids being connected with standard battery module for avoiding major loop from damaging by heavy current impact Electric machine controller input capacitance by heavy current impact.
The quantity of the battery cell is multiple;Multiple battery cells are connected in series.
Battery module combination system provided by the invention further includes voltage and current temperature sensing circuit;
Wherein, the voltage and current temperature sensing circuit, for detecting the voltage, electric current, temperature information of battery cell;
The voltage and current temperature sensing circuit is electrically connected the communication and control circuit.
The voltage, electric current, temperature information of battery can be transferred on battery management system by the communication and control circuit Position machine, battery management system host computer are internally integrated control algolithm, calculate the electricity of battery, and are transferred to external vehicle control Device or display instrument.
The breaker uses relay or double MOS circuits;The soft starting circuit is using switch or metal-oxide-semiconductor control series connection One resistance is made.
Each standard battery module is provided with anode interface and cathode interface;
It is detachably connected to form battery pack by anode interface, cathode interface between multiple standard battery modules.
The standard battery module of definition and series products of development first of the invention, then carries out group for standard battery module It closes, battery pack required for constituting.The combination of battery pack includes mechanical combination, electric combination, information combination etc..Standard electric Pond module takes standardization, seriation, intelligentized design scheme as basic battery pack Component units.Connect in machinery It connects, be engaged, is locking, vibration resistance, shock resistance, heat dissipation etc. are designed;Battery module is devised in terms of electrical connection Carry out the conductive interface of series, parallel etc.;Communication interface and communications protocol between module are devised in information combined aspects, this The target of invention is that battery pack not only can be neatly made of battery module, but also mutually can reliably and securely connect into one It is whole.Each modular battery can also be both powered separately as power supply supplying power for outside with other battery combinations.It is real Now standardization, seriation, intelligentized target.It is compared to the prior art, in the present invention inside each standard battery module All there is protection circuit, while also having communicating circuit.Each standard battery module can individually or with other standards battery Block combiner uses.In cell operations, according to the charging and discharging state of standard battery module, control with can be convenient a certain Battery pack is quickly cut or exit to a or several standard battery modules.This combined conversion process is by communicating circuit and electronics What control circuit was completed jointly.
As shown in Figure 1, the voltage of Plays battery module of the present invention is U0Volt (V), capacity is C0Coulomb (Ah)." standard Battery module " energy be W0Watt-hour (wh).
When the communication of standard battery module and control circuit detect cell voltage or electricity beyond setting value, cut automatically The output for the standard battery module of breaking, to protect the battery from damage.While notifying battery management system host computer, and according to The instruction of host computer is attracted or remains open.
Battery module combination system provided by the invention is embodied as:
1, the present invention can be applicable in electric vehicle, including electric bicycle, battery-operated motor cycle, electric four-wheel vehicle etc..Root The maximum power and continual mileage needed according to electric vehicle, calculates battery pack required voltage, electric current, capacity.According to battery pack Voltage calculates the quantity of the serial standard battery module needed, needs normal cell in parallel according to the calculation of capacity that battery pack needs The quantity of module.Meanwhile suitable installation space is designed in the car.The extension that vehicle interior reserves standard battery module is empty Between, standard battery module quantity is increased or decreased for user's selection, to meet the needs of vehicle power and continual mileage.
2, it is connected, is locked together in a certain order using the mechanical structure of standard battery module of the invention, and It links together with vehicle.Then according to series-parallel design needs, power output part is connected using electric connector, structure Success rate bus is supplied to motor, car light, air-conditioning, instrument etc..
3, the communication and control circuit for connecting standard battery module have recorded battery module in communication and control circuit Information, including number, capacity, voltage, service life etc., communication and control circuit and battery management system host computer communicate, according to The soft starting circuit and breaker of the instruction control module of host computer.That realizes multiple standard battery modules outputs and inputs control System.Battery management system host computer calculates the totality of battery pack according to the information of communication and control circuit transmitting in normal cell Voltage, capacity etc., then realize the communication with entire car controller.
4, in vehicle operation, voltage, temperature, the electric current of communication and control circuit detection battery cell are more electric The voltage of pond monomer, temperature, electric current whether be more than setting limit value.If it exceeds first scheduled limit value, then issue failure Alarm signal is shown by display instrument, and vehicle control device is notified to reduce driving power;If it exceeds second scheduled limit Value, then cut off major loop, prevent battery overcharge or overdischarge.
5, some standard battery module battery failure is detected in vehicle operation, then passes through communication and control electricity Road notifies supervisory controller, simultaneously switches off the breaker of the standard battery module.The power of battery pack then passes through other modules Output or input.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow Ring substantive content of the invention.

Claims (7)

1. a kind of battery module combination system, which is characterized in that upper including multiple standard battery modules and battery management system Machine;
Wherein, the battery management system host computer connects the communication interface of the standard battery module;Multiple normal cell moulds Battery pack is formed by series, parallel or serial-parallel mirror between block;
Any standard battery module has a mechanical structure;It is removable by mechanical structure between adjacent standard battery module Unload connection;
The standard battery module includes breaker, soft starting circuit, battery cell and communication and control circuit;
The battery management system host computer connects the communication and control circuit by the communication interface;
The communication and control circuit are electrically connected the control terminal of the breaker, the soft starting circuit;
The breaker, the soft starting circuit are in parallel;
The positive terminal of the battery cell connects one end of the breaker, the soft starting circuit, the breaker, described soft The other end of start-up circuit connects the cathode interface or collector of another standard battery module.
2. battery module combination system according to claim 1, which is characterized in that be provided in the mechanical structure mutually The broached-tooth design of occlusion;Broached-tooth design, for standard battery module to link together;
It is provided with the locking structure with anti-vibration on the mechanical even structure, locking structure is for preventing standard battery module because of vibration It is dynamic to disengage.
3. battery module combination system according to claim 1, which is characterized in that the power take-off of the battery pack connects Connect collector.
4. battery module combination system according to claim 1, which is characterized in that the quantity of the battery cell is more It is a;
Multiple battery cells are connected in series.
5. battery module combination system according to claim 1, which is characterized in that further include voltage and current temperature detection electricity Road;
Wherein, the voltage and current temperature sensing circuit, for detecting the voltage, electric current, temperature information of battery cell;
The voltage and current temperature sensing circuit is electrically connected the communication and control circuit.
6. battery module combination system according to claim 1, which is characterized in that the breaker uses relay or double MOS circuit;
The soft starting circuit is made of switch or metal-oxide-semiconductor control one resistance of series connection.
7. battery module combination system according to claim 1, which is characterized in that each standard battery module is provided with just Pole interface and cathode interface;
It is detachably connected to form battery pack by anode interface, cathode interface between multiple standard battery modules.
CN201610828251.8A 2016-09-18 2016-09-18 battery module combination system Active CN106450517B (en)

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CN107452989A (en) * 2017-03-20 2017-12-08 亿航智能设备(广州)有限公司 Battery management system and there is its flight control system and aircraft
CN108091794A (en) * 2017-11-10 2018-05-29 天津力神电池股份有限公司 3 strings 2 and Li-ion batteries piles protection board
CN108471151A (en) * 2018-04-12 2018-08-31 福泰动力有限公司 Power supply system and driving method
CN112582720A (en) * 2019-09-30 2021-03-30 比亚迪股份有限公司 Energy storage device and vehicle with same

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