CN107482728A - The battery signal Acquisition Circuit and cell managing device of power-consumption balance - Google Patents
The battery signal Acquisition Circuit and cell managing device of power-consumption balance Download PDFInfo
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- CN107482728A CN107482728A CN201710787257.XA CN201710787257A CN107482728A CN 107482728 A CN107482728 A CN 107482728A CN 201710787257 A CN201710787257 A CN 201710787257A CN 107482728 A CN107482728 A CN 107482728A
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Classifications
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- 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
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses the battery signal Acquisition Circuit and cell managing device of a kind of power-consumption balance, for in the battery signal Acquisition Circuit and cell managing device of daisy chain communication, it include battery management unit one-to-one with some battery units and with the one-to-one power-consumption balance unit of some battery management units, the battery management unit obtains the monitoring data of corresponding battery unit, each battery management unit exports a constant voltage to be powered to the corresponding power-consumption balance unit, the power consumption of each default size of power-consumption balance unit consumption, to cause the power consumption sum of each battery management unit and corresponding power-consumption balance unit equal.Compared with prior art, the power-consumption balance unit of big low power consumption is preset in present invention connection consumption on battery management unit, is greatly reduced inconsistency of the battery unit from power consumption, can be significantly improved the service life of series battery.
Description
Technical field
The present invention relates to a kind of electric vehicle engineering field, more particularly to a kind of cell managing device of power-consumption balance.
Background technology
With reference to Chinese patent CN201280053449.3, existing battery management unit, it has multiple monitoring IC cores
Piece, wherein, each it is configured to obtain at least one battery list pond or at least one bag in multiple monitoring IC chips
At least one running parameter of the secondary battery unit in the battery list pond of predetermined quantity is included, and it is total to be connected to first
Line.In addition, the battery management unit also includes basic monitoring IC chip, it is connected similarly to the first bus and is constructed use
In, by the first bus with it is multiple monitoring IC chips in each communicated.And the battery management unit also includes control
Device, wherein, basic monitoring IC chip and control device are connected to the second bus and are configured to, and pass through the second bus phase
Mutual communication.
Above-mentioned technology can realize the management of multiple secondary battery units, but due to using " daisy chain " structure, top
Monitoring IC, only transmission data, consumption electric current are smaller downwards；Middle monitoring IC had both needed to transmit data downwards, it is also desirable to upload
Transmission of data, consumption electric current are slightly more；And the monitoring IC of least significant end had both been needed to transmitting data, while also need to enter with main control MCU
Row bus communicate, and consumption electric current is most；Thus because the monitoring IC consumption electric currents of diverse location (are finally reflected as electricity) difference,
Battery unit is artificially exacerbated from the inconsistent of power consumption, causes the imbalance of battery unit, reduces making for power battery pack
Use the life-span.
Therefore it is badly in need of a kind of cell managing device that can be solved the above problems.
The content of the invention
It is an object of the invention to provide a kind of battery signal Acquisition Circuit of power-consumption balance and the battery management of power-consumption balance
Device, the consumable electric equilibrium of multiple battery management units can be effectively ensured, greatly reduce battery unit differing from power consumption
Cause property.
It is upper purposeful in order to realize, the invention discloses a kind of battery signal Acquisition Circuit of power-consumption balance, for gathering
Monitoring data and output in some battery units, it includes and the one-to-one some battery management lists of the battery unit
Member and with some one-to-one power-consumption balance units of battery management unit, the battery management unit obtain it is corresponding described in
The monitoring data of battery unit, some battery cells in series set and provide power supply to corresponding battery management unit respectively
Voltage, so that some battery management units are in the voltage chain risen, some battery management units are along voltage chain
It is electrically connected to each other by internal bus, and causes the upper battery management unit of voltage chain to the next battery management list of voltage chain
Member conveying monitoring data, the prison of some battery management unit collections of battery management unit output of the voltage chain lowermost position
Data are controlled, each battery management unit exports a constant voltage to be powered to the corresponding power-consumption balance unit, each
The power consumption of the default size of power-consumption balance unit consumption, to cause each battery management unit and corresponding power-consumption balance unit
Power consumption sum it is equal.
Compared with prior art, the power-consumption balance list of big low power consumption is preset in present invention connection consumption on battery management unit
Member, when realizing daisy chain communication, each institute's battery unit from consume power consumption is equal or approximately equal, can be effectively ensured
The consumable electric equilibrium of multiple battery management units, inconsistency of the battery unit from power consumption is greatly reduced, can be significantly improved
The service life of series battery.Wherein, the present invention can be used in electric automobile power battery, and it is big to be particularly suitable for current country
Push capable normal cell case application.
It is preferred that each power-consumption balance unit is the resistive module of preset resistance size or provides predetermined current
Constant current source module.
It is preferred that each power-consumption balance unit connects the constant voltage and earth terminal of the corresponding battery management unit respectively
Between.
It is preferred that power-consumption balance unit corresponding to the battery management unit of the voltage chain lowermost position is vacant, program section
The power consumption of all battery units is saved.
Wherein, the resistive module is made up of at least one resistance.
Wherein, the resistive module is made up of at least one precision resistance.The current source module is by accurate current source
Form, such as can be made up of one or more diode or LED element.
It is preferred that the constant voltage U of each battery management unit output is equal, the power-consumption balance unit is default
The resistive module of resistance sizes, power-consumption balance unit corresponding to the battery management unit of the voltage chain lowermost position is vacant, described
The resistance value of resistive module corresponding to each battery management unit among voltage chain is U2/ (Wb1-Wbm), the voltage chain is most
The resistance value of resistive module corresponding to upper battery management unit is U2/ (Wb1-Wbn), Wb1 are the voltage chain lowermost position
Battery management unit power consumption, Wbn be the voltage chain upper battery management unit power consumption, Wbm is the voltage
The power consumption of battery management unit among chain.
It is preferred that each battery management unit includes integrated circuit and voltage-stablizer, described integrated circuit one end respectively
It is connected with the battery unit to gather the monitoring data of the battery unit, the other end is connected with the voltage-stablizer and drives institute
Voltage-stablizer action is stated, the voltage-stablizer connects the positive pole of the battery unit and is converted to the electric signal of the battery unit positive pole
The constant voltage is exported to the power-consumption balance unit.
It is preferred that some battery management units and corresponding power-consumption balance unit are installed on a circuit board.The party
Case causes the present invention to effectively improve the integrated level of cell management system of electric automobile, reduces volume.
The invention also discloses a kind of cell managing device of power-consumption balance, including battery signal Acquisition Circuit and processing mould
Block, the battery signal Acquisition Circuit gather monitoring data corresponding to each battery unit in some battery units and exported to institute
Processing module is stated, the processing module is managed according to the monitoring data to some battery units, the battery letter
Number Acquisition Circuit is as implied above.
Compared with prior art, the power-consumption balance list of big low power consumption is preset in present invention connection consumption on battery management unit
Member, when realizing daisy chain communication, each institute's battery unit from consume power consumption is equal or approximately equal, can be effectively ensured
The consumable electric equilibrium of multiple battery management units, inconsistency of the battery unit from power consumption is greatly reduced, can be significantly improved
The service life of series battery.Wherein, the present invention can be used in electric automobile power battery, and it is big to be particularly suitable for current country
Push capable normal cell case application.
It is preferred that the cell managing device of the power-consumption balance also includes isolation communication module, the isolation communication module
One end is connected by communication bus with the battery management unit, receives the monitoring data of the battery management unit output, and
The monitoring data is sent to processing module.
Specifically, the battery management unit includes AFE chip, the communication bus be spi bus, I2C buses or
UART buses.
It is preferred that the cell managing device of the power-consumption balance also includes communication module, described communication module one end and institute
State processing module to be connected, the other end is communicated by CAN with outside.
Brief description of the drawings
Fig. 1 is the structured flowchart of the cell managing device of power-consumption balance described in first embodiment of the invention.
Fig. 2 a-2d are the battery signal Acquisition Circuit part-structure block diagrams that balance is consumed described in work(of the present invention.
Fig. 3 is the structured flowchart of the cell managing device of power-consumption balance described in second embodiment of the invention.
Embodiment
To describe the technology contents of the present invention, construction feature, the objects and the effects in detail, below in conjunction with embodiment
And accompanying drawing is coordinated to be explained in detail.
With reference to figure 1, in the first embodiment, the invention discloses a kind of cell managing device 100 of power-consumption balance, including
Battery signal Acquisition Circuit 10 and processing module 20, the battery signal Acquisition Circuit gather n battery in battery module 30
Monitoring data corresponding to unit B T1, BT2 ... BTn is simultaneously exported to the processing module 20, and the processing module 20 is according to the prison
Control data are managed to the battery unit BT1-BTn.N is integer more than or equal to 2, n battery unit BT1, BT2 ...
BTn is serially connected.Certainly, n is advisable with being less than or equal to 5 more than or equal to 2.
With continued reference to Fig. 1, the battery signal Acquisition Circuit 10 includes battery management module 11 and power-consumption balance unit 12,
The battery management module 11 includes and the one-to-one battery management unit 111- of battery unit BT1, BT2 ... BTn
11n.The power-consumption balance module 12 includes and the one-to-one power-consumption balance unit 121- of the battery management unit 111-11n
12n.The battery management unit 111-11n gathers corresponding battery unit BT1-BTn monitoring data (such as electricity respectively
Pressure, current data).Some battery unit BT1-BTn are arranged in series and respectively to corresponding battery management unit 111-11n
Power supply, so that some battery management unit 111-11n are in the voltage chain risen, some battery management units
111-11n is electrically connected to each other along voltage chain by internal bus, and causes the upper battery management unit 11m of voltage chain to voltage
The next battery management unit 11 (m-1) conveying monitoring data of chain, m=2,3 ... n, the battery management of the voltage chain lowermost position
Unit 111 exports the monitoring data of some battery management unit 111-11n collections, each battery management unit 111,
112 ... 11n preset the constant voltage U of size according to battery unit BT1, BT2 ... BTn electric signal outputs one exported, often
One power-consumption balance unit 121, the resistive module that 122 ... 12n are preset resistance size and powered by the constant voltage U, and often
The one power-consumption balance unit 121,122 ... 12n are to consume the power consumption of default size so that some battery management units
111st, 112 ... 11n are equal with the power consumption of corresponding power-consumption balance unit 121,122 ... 12n sums.Wherein, the power-consumption balance
Unit 121,122 ... 12n connect respectively the corresponding battery management unit 111,112 ... 11n constant voltage U and earth terminal it
Between.
During work, each battery unit BT1, BT2 ... BTn supplies to corresponding battery management unit 111,112 ... 11n respectively
Electricity, each battery management unit 111,112 ... 11n power to corresponding power-consumption balance unit 121,122 ... 12n respectively, battery
Administrative unit 111, the power consumption of 112 ... 11n consumption are respectively Wb1, Wb2 ... Wbn, power-consumption balance unit 121,122 ... 12n work(
Consumption is respectively Wa1, Wa2 ... Wan, Wb1+Wa1=Wb2+Wa2=...=Wbn+Wan, to solve battery management unit position difference
Each battery unit caused by power consumption is from the unbalanced problem of power consumption.
Preferably, the resistive module are made up of at least one precision resistance.
Certainly, each power-consumption balance unit 121,122 ... 12n can also be the constant-current source for providing predetermined current
Module, such as be made up of one or more diode or LED element, to consume the power consumption of default size so that some described
The power-consumption balance of battery management unit 111,112 ... 11n.
Preferably, with reference to figure 2a to Fig. 2 d, the battery management unit 111,112 ... 11n export constant voltage respectively
Vdd1, Vdd2 ... Vddn, the power consumption of the battery management unit 111 is Wb1, static current of lcd Ib1, Ib1=Wb1/Vdd1.Electricity
Pond administrative unit 112-11n power consumption is respectively Wbm, and static current of lcd is respectively Ibm=Wbm/Vddm, m=2,3 ... n.It is described
Power-consumption balance unit 121 is vacant, and resistance value R2, R3 ... the Rn of power-consumption balance unit 122 ... 12n calculation formula is：Rm
=(Wb1-Wbm)/Ibm2。
Wherein, in the present embodiment, the power consumption in battery management unit 112-11 (n-1) among voltage chain is equal, works as perseverance
Determine voltage Vdd1, Vdd2 ... Vddn magnitude of voltage it is equal when, the resistance value phase of the resistive module R2-R (n-1) among voltage chain
Deng.
In a preferred embodiment, constant voltage Vdd1, Vdd2 ... Vddn magnitude of voltage is equal, takes U, the cell tube
The resistive module of reason unit 111 is vacant, and the power consumption in battery management unit 112-11 (n-1) among voltage chain is equal, is
Wbx.The resistance value R2-R (Nn-1) of the resistive module of each battery management unit 112-11 (n-1) among the voltage chain is equal
For U2/(Wb1-Wbx).The resistance value Rn of the resistive module of the battery management unit 11n is U2/(Wb1-Wbn)。
With continued reference to Fig. 2 a to Fig. 2 d, each 11n of battery management unit 111,112,113 ... includes integrated electricity respectively
The 31n of road 311,312,313 ... and the 32n of voltage-stablizer 321,322,323 ..., described 31n one end of integrated circuit 311,312,313 ... with
Battery unit BT1, BT2, BT3 ... BTn is connected to gather the monitoring number of battery unit BT1, BT2, BT3 ... BT n
According to the other end is connected with the 32n of voltage-stablizer 321,322,323 ... and drives the 32n of voltage-stablizer 321,322,323 ... to move
Make, the 32n of voltage-stablizer 321,322,323 ... connects the positive pole of battery unit BT1, BT2, BT3 ... BT n and by its positive pole
Electric signal is converted to constant voltage Vdd1, Vdd2, Vdd2 ... Vddn outputs.In the present embodiment, the voltage-stablizer 321,322,
323 ... 32n are LDO circuit, and the 31n of integrated circuit 311,312,313 ... passes through signal NPNB1, NPNB2, NPNB3 ...
Triode control terminal in the corresponding 32n of voltage-stablizer 321,322,323 ... of NPNBn drivings with control the voltage-stablizer 321,322,
323 ... 32n are acted.
Preferably, some battery management unit 111-11n are installed on (not shown) on a circuit board.
Preferably, with reference to figure 3, in a second embodiment, the cell managing device 101 also includes isolation communication module 40
With communication module 50, described isolation one end of communication module 40 is connected with the battery management module 10 by communication bus, received
The monitoring data that the battery management module 10 exports, and the monitoring data is sent to processing module 20, the communication mould
The one end of block 50 is connected with the processing module 20, and the other end is communicated by CAN with outside.
Wherein, each battery unit BT1, BT2 ... BTn includes one or more than one single battery core.With 6-16
It is individual to be preferred.Wherein, the quantity of single battery core can be with identical in battery unit, can also different (such as some battery units include 6
Individual cell, some battery units include 16 cells).Preferably, in the present embodiment, the monomer of each battery unit
Battery core number is equal, and each cell voltage has 16 single battery cores.
In the present embodiment, described 20 embedded processing units of processing unit, with processors such as MCU or ARM and its embedding
Enter formula software for core, its peripheral circuit can flexible configuration as needed, crystal oscillator if necessary, EEPROM, outside is guarded the gate
Dog etc., belongs to the common configuring technical of embedded system, and the particular circuit configurations and its course of work of processing unit 20 are equal
It is well known to those skilled in the art, is not described in detail herein.
In the present embodiment, the communication unit 50 can be isolated can module or non-isolated CAN controller
Module.
Battery management unit BT1-BTn integrated circuit is with AFE chip (Analog Front End, AFE(analog front end) collection
IC), be core, its peripheral circuit can flexible configuration as needed, protection device (fuse, TVS etc.) if necessary, filtering
Device (resistance capacitance), passive equalizing circuit MOS device (can also be integrated, such as newest NXP MC33771 by AFE chip
Chip) and temperature collection circuit device.Certainly, the battery management unit BT1-BTn can also be based on existing ripe circuit skill
Art designs.
The isolation communication unit 40 is using digital isolating chip as core, configures necessary peripheral circuit and forms.According to
The communication bus mode of AFE chip selects corresponding channel isolation number in battery management unit, and it is logical that 4 are chosen if spi bus
Road (or more) isolating chip, I2 communication bus (I2C buses) then choose 2 passages (or more) isolating chip, UART communication parties
Formula then choose 2 passages (or more) isolating chip, etc..Certainly, the isolation communication unit 40 can also be based on existing maturation
Circuit engineering designs.
The above disclosed right for being only the preferred embodiments of the present invention, the present invention can not being limited with this certainly
Scope, therefore the equivalent variations made according to scope of the present invention patent, still belong to the scope that the present invention is covered.
Claims (12)
1. a kind of battery signal Acquisition Circuit of power-consumption balance, for gathering monitoring data corresponding to some battery units and defeated
Go out, it includes corresponding with the one-to-one some battery management units of the battery unit, the battery management unit acquisition
The monitoring data of the battery unit, some battery cells in series set and supplied respectively to corresponding battery management unit
Electricity, so that some battery management units are in the voltage chain risen, some battery management units lead to along voltage chain
Cross internal bus to be electrically connected to each other, and cause the upper battery management unit of voltage chain to the next battery management unit of voltage chain
Convey monitoring data, the monitoring of some battery management unit collections of battery management unit output of the voltage chain lowermost position
Data, it is characterised in that：Also include and the one-to-one power-consumption balance unit of the battery management unit, each cell tube
Manage unit and export a constant voltage to be powered to the corresponding power-consumption balance unit, each power-consumption balance unit consumption is default big
Small power consumption, to cause the power consumption sum of each battery management unit and corresponding power-consumption balance unit equal.
2. the battery signal Acquisition Circuit of power-consumption balance as claimed in claim 1, it is characterised in that：Each power-consumption balance
Unit is the resistive module of preset resistance size or the constant current source module of offer predetermined current.
3. the battery signal Acquisition Circuit of power-consumption balance as claimed in claim 1, it is characterised in that：Each power-consumption balance unit
Corresponding to connecing respectively between the constant voltage of the battery management unit and earth terminal.
4. the battery signal Acquisition Circuit of power-consumption balance as claimed in claim 1, it is characterised in that：The voltage chain lowermost position
Battery management unit corresponding to power-consumption balance unit it is vacant.
5. the battery signal Acquisition Circuit of power-consumption balance as claimed in claim 4, it is characterised in that：Each battery management
The constant voltage U of unit output is equal, and the power-consumption balance unit is the resistive module of preset resistance size, in the voltage chain
Between each battery management unit corresponding to the resistance value of resistive module be U2/ (Wb1-Wbm), the electricity of the voltage chain upper
The resistance value of resistive module corresponding to the administrative unit of pond is U2/ (Wb1-Wbn), Wb1 are the cell tube of the voltage chain lowermost position
The power consumption of unit is managed, Wbn is the power consumption of the battery management unit of the voltage chain upper, and Wbm is among the voltage chain
The power consumption of battery management unit.
6. the battery signal Acquisition Circuit of power-consumption balance as claimed in claim 2, it is characterised in that：The resistive module is by extremely
Few precision resistance composition.
7. the battery signal Acquisition Circuit of power-consumption balance as claimed in claim 1, it is characterised in that：Each battery management
Unit includes integrated circuit and voltage-stablizer respectively, and described integrated circuit one end is connected with the battery unit to gather the battery
The monitoring data of unit, the other end are connected with the voltage-stablizer and drive the voltage-stablizer to act, and the voltage-stablizer connects the electricity
The electric signal of the battery unit positive pole is simultaneously converted to the constant voltage and exported to the power-consumption balance by the positive pole of pool unit
Unit.
8. the battery signal Acquisition Circuit of power-consumption balance as claimed in claim 1, it is characterised in that：Some battery managements
Unit and corresponding power-consumption balance unit are installed on a circuit board.
9. a kind of cell managing device of power-consumption balance, including battery signal Acquisition Circuit and processing module, the battery signal
Acquisition Circuit gathers monitoring data corresponding to each battery unit in some battery units and exported to the processing module, described
Processing module is managed according to the monitoring data to some battery units, it is characterised in that：The battery signal is adopted
The battery signal Acquisition Circuit of power-consumption balance of the collector as any one of claim 1-8.
10. the cell managing device of power-consumption balance as claimed in claim 9, it is characterised in that：Also include isolation communication module,
Described isolation communication module one end is connected by communication bus with the battery management unit, and it is defeated to receive the battery management unit
The monitoring data gone out, and the monitoring data is sent to processing module.
11. the cell managing device of power-consumption balance as claimed in claim 9, it is characterised in that：The battery management unit bag
AFE chip is included, the communication bus is spi bus, I2C buses or UART buses.
12. the cell managing device of power-consumption balance as claimed in claim 9, it is characterised in that：Also include communication module, it is described
Communication module one end is connected with the processing module, and the other end is communicated by CAN with outside.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994746A (en) * | 2019-12-31 | 2020-04-10 | 常州格力博有限公司 | Voltage equalization system |
| CN110995558A (en) * | 2019-10-23 | 2020-04-10 | 芜湖宏景电子股份有限公司 | Battery management system compatible with CAN and daisy chain connection |
| WO2020187063A1 (en) * | 2019-03-21 | 2020-09-24 | 宁德时代新能源科技股份有限公司 | Energy storage system, and control method and apparatus therefor |
| CN113928124A (en) * | 2021-11-10 | 2022-01-14 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Battery management system for electric automobile and electric automobile |
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