CN105958137A - Heat balance management system for lithium-ion battery module - Google Patents
Heat balance management system for lithium-ion battery module Download PDFInfo
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- CN105958137A CN105958137A CN201610472033.5A CN201610472033A CN105958137A CN 105958137 A CN105958137 A CN 105958137A CN 201610472033 A CN201610472033 A CN 201610472033A CN 105958137 A CN105958137 A CN 105958137A
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- Prior art keywords
- battery
- lithium ion
- management system
- heat
- circuit board
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- 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
-
- 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
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- 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
- H01M10/488—Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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)
- 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 a heat balance management system for a lithium-ion battery module. The heat balance management system comprises heat-conducting structure parts, a deformation heat-conducting pad, a heating film, a cooling fin, a balance and temperature control circuit board and a battery management system circuit board, wherein the heat-conducting structure parts are tightly connected with lithium-ion soft package single cells; the deformation heat-conducting pad is arranged on the periphery of a lithium-ion soft package single cell queue; the heating film is arranged on one of two relatively wide surfaces of the rectangular battery module; the cooling fin is arranged on the other one of the two relatively wide surfaces of the rectangular battery module and is tightly connected with the deformation heat-conducting pad; the balance and temperature control circuit board is connected with the battery management system circuit board and each lithium-ion soft package single cell; and the battery management system circuit board is arranged at the end of the battery module and is connected with a safety protection circuit, a balance circuit, the lithium-ion soft package single cells, temperature sensors and a current sensor separately. By the heat balance management system, application of the battery module at any environment temperature can be achieved.
Description
Technical field
The present invention relates to the technical field of lithium ion battery module thermal balance management, refer in particular to a kind of lithium ion
Battery modules thermal balance management system.
Background technology
In recent years, the problem in terms of problem of environmental pollution and lack of energy is increasingly subject to people's concern, along with newly
Type high-energy secondary battery technology especially lithium-ion-power cell technology continuous progressive, with electric bicycle,
Electric automobile is the electric vehicle technological development of representative and popularization and application are increasingly subject to pay attention to.
Battery system needed for electric automobile whole enterprise day by day trends towards integrated, miniaturization, lightness,
Layout battery the most as much as possible.Lithium ion novel high-energy secondary cell relative to plumbic acid,
Ni-MH battery, has specific energy height, non-environmental-pollution, monomer voltage high, obtains increasing
Application.A number of Soft Roll monomer lithium ion battery forms battery modules by connection in series-parallel, and can solve should
With middle Large Copacity, the application problem of voltage levels.Lithium ion battery during room temperature charge and discharge by
Existence in ohmic internal resistance can produce heat, if the heat that battery produces can not discharge timely, and Jiu Huicun
In thermal runaway, cause the security incident such as cells burst or bulge；Lithium ion battery is when applied at elevated temperature, more
Easily cause the accumulation of heat；When therefore using in room temperature and hot environment, need to use cooling system.
When lithium ion battery uses in low temperature environment, it may appear that the situation of its capacity can not be discharged completely and there is damage
The risk of bad battery；When therefore using in low temperature environment, need to use heating system.Heat in the present invention
Balance system includes heating system and cooling system two parts, can effectively solve above-mentioned high and low temperature environment to battery
Impact.
Summary of the invention
It is an object of the invention to overcome the shortcoming and defect of prior art, it is provided that a kind of lithium ion battery module
Thermal balance management system, can realize battery modules and use in any ambient temperature, and in module, temperature is the most controlled
System, within the scope of lithium ion battery optimum working temperature, effectively ensures battery modules security feature and performance
The optimum performance of battery modules.
For achieving the above object, technical scheme provided by the present invention is: a kind of lithium ion battery module heat is put down
Weighing apparatus management system, including conductive structure part, deformation heat conductive pad, heating film, fin, equilibrium and temperature control
Circuit board processed, battery management system circuit board；Described conductive structure part is soft with each lithium ion of battery modules
Bag monomer battery core is closely coupled, is staggered；Described deformation heat conductive pad is arranged in lithium ion Soft Roll monomer battery core
Queue surrounding, is adjacent to each lithium ion Soft Roll monomer battery core and conductive structure part, for strengthening the heat of battery
Conduction；Described heating film is arranged in one of them face in two wider faces of cuboid battery modules, with shape
Becoming heat conductive pad closely coupled, when making heating, battery is uniformly heated, when battery modules internal temperature is less than setting
Determine to heat to battery modules during minimum temperature；It is wider that described fin is arranged in cuboid battery modules two
Another face in face, closely coupled with deformation heat conductive pad, the dissipating of accelerated heat when making heat radiation, also make electricity
The temperature difference between pond is more uniform；Described equilibrium and temperature control circuit board are by internal communication bus and cell tube
Reason system circuit board is connected, and it is connected with each lithium ion Soft Roll monomer battery core by signals collecting line, is used for
Euqalizing current passes through；Described battery management system circuit board is arranged on the termination of battery modules, and it is by patching
Part and external system carry out data communication, and it is by the safety protective circuit of internal communication bus with battery modules
Be connected, control safety protective circuit action in extreme circumstances implement protection, its by internal communication bus with
The equalizing circuit of battery modules is connected, and controls equalizing circuit and opens and closes, and it passes through signals collecting line with every
Individual lithium ion Soft Roll monomer battery core both positive and negative polarity is connected, and reads the voltage data of lithium ion Soft Roll monomer battery core, its
It is connected with the temperature sensor of battery modules by signals collecting line, reads the state of temperature information of battery modules,
It is connected with the current sensor of battery modules by signals collecting line, reads the charging and discharging currents of battery modules
Information.
Described conductive structure part is adjacent to lithium ion Soft Roll monomer battery core, quick for the heat when heating starting
Import each lithium ion Soft Roll monomer battery core；When heat radiation starts, heat quickly derives each lithium ion Soft Roll list
Body battery core.
Described equilibrium and temperature control circuit board include that equalizaing charge signal driving circuits, heating film are opened
OFF signal driving circuits, heating film relay indicating light driving circuits form；It is at thermal balance
Primarily serving the purpose of in system: heating film switching signal driving circuits be used for controlling heating film start or
Quitting work, it is correct that heating film relay indicating light driving circuits is used for controlling heating film relay indicating light
Instruction heating film duty.
Described battery management system circuit board obtains each lithium ion Soft Roll list by its battery status acquisition chip
The state parameter information of body battery core, defeated by the communication bus within battery modules after its single-chip microcomputer computing
Go out equilibrium, temperature these control signal to equilibrium and temperature control circuit board；It is by outside battery modules
The control that the communication bus output voltage of battery modules, SOC, these status informations of temperature communicate to other
System processed；Its primarily serving the purpose of in heat balance system: obtain the internal Current Temperatures information of battery modules,
Compare with parameter preset, and make startup heating and stop the instruction of heating.
The present invention compared with prior art, has the advantage that and beneficial effect:
1, lithium ion battery module computer heating control at low ambient temperatures is realized.
2, lithium ion battery module radiating control in high temperature environments is realized.
3, realize the equilibrium of lithium ion battery module internal temperature field, the temperature difference minimizes, makes the battery modules can
It is operated in optimum temperature range.
4, reduce lithium ion battery module high-temperature hot risk out of control and low temperature damages battery probability, increase and use effect
Rate, extends actual life.
Accompanying drawing explanation
Fig. 1 is lithium ion battery modular structure schematic diagram.
Fig. 2 is the lithium ion battery module thermal balance management system of the present invention schematic diagram when heating.
The lithium ion battery module thermal balance management system of Fig. 3 present invention schematic diagram when heat radiation.
The lithium ion battery module thermal balance management system that Fig. 4 is the present invention workflow diagram when heating.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
As it is shown in figure 1, lithium ion battery module includes battery modules shell 1, fire-retardant air bag 2, plastics fasten
Part 3, heating film 4, deformation heat conductive pad 5, conductive structure part 6, lithium ion Soft Roll monomer battery core 7, electrostatic every
From pad 8, deformation heat conductive pad 9, equalizing resistance diaphragm 10, fin 11, temperature sensor 12, electric current passes
Sensor 13, equilibrium and temperature control circuit board 14, electrical switch 15, battery management system circuit board 16,
Power output end 17.
Concrete, the lithium ion Soft Roll monomer battery core 7 of the present embodiment can be polymer lithium ion battery cell, aluminum
The liquid lithium ion battery core of plastic film packaging, the solid lithium ion battery core of laminated aluminum film, or laminated aluminum film
Gel-state lithium ion battery core；This is not limited by the present embodiment, each lithium ion Soft Roll monomer battery core 7
All being adjacent to a conductive structure part 6 and put in queue-type, this battery modules uses 3 and 20 strings totally 60
Individual Soft Roll monomer battery core form, add thermal balance management system, balanced management system, safety system,
Battery management system circuit board 16 and shell and connector form complete battery modules, equilibrium and temperature and control
Circuit board 14, heating film 4, deformation heat conductive pad 5, deformation heat conductive pad uses heat conductive silica gel or other heat conductivility
Excellence and the material of changeable type, improve conductive structure part 6 and fin 11 contact area.As it is shown in figure 1,
For rear battery module structure schematic diagram in groups.
The composition as in figure 2 it is shown, each lithium ion Soft Roll monomer battery core 7 and conductive structure part 6 are combined closely
One set of cells 18, separates with electrostatic isolation pad 8 between each set of cells.
As shown in Figure 1 to Figure 3, the lithium ion battery module thermal balance management system described in the present embodiment, main
Will be by conductive structure part 6, deformation heat conductive pad 5,9, heating film 4, fin 11, equilibrium and temperature control
Circuit board 14, battery management system circuit board 16 are constituted.Described conductive structure part 6 is each with battery modules
Lithium ion Soft Roll monomer battery core 7 is closely coupled, is staggered；Described deformation heat conductive pad 5,9 be arranged in lithium from
Sub-Soft Roll monomer battery core queue surrounding, is adjacent to each lithium ion Soft Roll monomer battery core 7 and conductive structure part 6,
For strengthening the conduction of heat of battery；Described heating film 4 is arranged in two wider faces of cuboid battery modules
One of them face, closely coupled with deformation heat conductive pad 5,9, when making heating, battery is uniformly heated, when
Battery modules internal temperature heats to battery modules less than when setting minimum temperature；Described fin 11 is arranged in
Another face in two wider faces of cuboid battery modules, closely coupled with deformation heat conductive pad 5,9, make
The dissipating of accelerated heat during heat radiation, also makes the temperature difference between battery more uniform；Described equilibrium and temperature control electricity
Road plate 14 is connected with battery management system circuit board 16 by internal communication bus, and it passes through signals collecting line
It is connected with each lithium ion Soft Roll monomer battery core 7, passes through for euqalizing current；Described battery management system electricity
Road plate 16 is arranged on the termination of battery modules, and it carries out data communication by connector and external system, and it leads to
Cross internal communication bus to be connected with safety protective circuit, control safety protective circuit action real in extreme circumstances
Executing protection, it is connected with equalizing circuit by internal communication bus, controls equalizing circuit and opens and closes, its
It is connected with each lithium ion Soft Roll monomer battery core 7 both positive and negative polarity by signals collecting line, reads lithium ion Soft Roll list
The voltage data of body battery core 7, it is connected with the temperature sensor 12 of battery modules by signals collecting line, reads
Taking the state of temperature information of battery modules, it is by current sensor 13 phase of signals collecting line with battery modules
Even, the charging and discharging currents information of battery modules is read.
Described conductive structure part 6 is adjacent to lithium ion Soft Roll monomer battery core 7, for the heat when heating starting
Quickly introduce each lithium ion Soft Roll monomer battery core 7；When heat radiation starts, quickly to derive each lithium ion soft for heat
Bag monomer battery core 7.
Described equilibrium and temperature control circuit board 14 include equalizaing charge signal driving circuits, heating film
Switching signal driving circuits, heating film relay indicating light driving circuits form；It is put down in heat
Primarily serving the purpose of in balance system: heating film switching signal driving circuits is used for controlling heating film and starts
Or quit work, heating film relay indicating light driving circuits is used for just controlling heating film relay indicating light
Really instruction heating film duty.
Described battery management system circuit board 16 obtains each lithium ion Soft Roll by its battery status acquisition chip
The state parameter information of monomer battery core, by the communication bus within battery modules after its single-chip microcomputer computing
Output equilibrium, temperature these control signal to equilibrium and temperature control circuit board；It is by outside battery modules
The communication bus output voltage of battery modules, SOC, these status informations of temperature communicate to other
Control system；Its primarily serving the purpose of in heat balance system: obtain the internal Current Temperatures information of battery modules,
Compare with parameter preset, and make startup heating and stop the instruction of heating.
When the lithium ion battery module heat balance system above-mentioned to the present embodiment assembles, first by each
Individual lithium ion Soft Roll monomer battery core 7 is adjacent to conductive structure part 6, then puts compression in queue-type；Battery core
Lug utilizes lug support and pressing plate to position, then is fastened on support by lug with screw；Lithium ion
After the fixed installation of Soft Roll monomer battery core 7 is well placed, the surrounding in set of cells 18 sticks deformation heat conductive pad 5,9,
In order to strengthen conduction of heat；Install heating film 4, fin 11, equilibrium and temperature control circuit board the most again
14, battery management system circuit board 16, finally installs shell and connector.
As shown in Figure 4, when system start-up works, whether battery management system software first judges battery modules
Work, or whether have and stop behavior manually, or whether safeguard protection, as judged ring without then entering temperature
Joint.First by battery management system detect present battery module internal temperature T, and judge whether less than preset
Lowest temperature angle value TminIf being not less than TminNeed not start heating system；If less than TminNeed heating
System works, and real-time sampling battery modules internal temperature values.When battery modules internal temperature values T is more than pre-
If temperature value TsettingTime, stop heating system work.Repeat said process and so forth, until battery mould
Group quits work.
The technical scheme that the present embodiment is used, deformation heat conductive pad, heating film, heat radiation due to ingenious use
Sheet, equilibrium and temperature control circuit board, battery management system circuit board, can increase the efficiency of conduction of heat,
Lithium ion battery module is either heated when low temperature, or carries out under high temperature and balanced mode
Heat radiation, the transmission of heat can manage in the case of system designs fast without this thermal balance by ratio, effectively reduce
Thermal runaway security risk under hot conditions；Decrease the probability of cell damage under cryogenic conditions simultaneously.
In actual applications, the present embodiment lithium ion battery module thermal balance management system can also and battery
The blood circulation of heat-insulation system, cooling system or other modes outside module combines, the most system-level with composition
Heat balance system.
Embodiment described above is only the preferred embodiments of the invention, not limits the enforcement model of the present invention with this
Enclose, therefore the change that all shapes according to the present invention, principle are made, all should contain within the scope of the present invention.
Claims (4)
1. lithium ion battery module thermal balance management system, it is characterised in that: include conductive structure part,
Deformation heat conductive pad, heating film, fin, equilibrium and temperature control circuit board, battery management system circuit board；
Described conductive structure part is closely coupled with each lithium ion Soft Roll monomer battery core of battery modules, is staggered；
Described deformation heat conductive pad is arranged in lithium ion Soft Roll monomer battery core queue surrounding, with each lithium ion Soft Roll monomer
Battery core and conductive structure part are adjacent to, for strengthening the conduction of heat of battery；Described heating film is arranged in cuboid electricity
One of them face in two wider faces of pond module, closely coupled with deformation heat conductive pad, battery when making heating
It is uniformly heated, when battery modules internal temperature heats to battery modules less than when setting minimum temperature；Institute
State another face that fin is arranged in two wider faces of cuboid battery modules, tight with deformation heat conductive pad
Close it is connected, the dissipating of accelerated heat when making heat radiation, also make the temperature difference between battery more uniform；Described equilibrium and
Temperature control circuit board is connected with battery management system circuit board by internal communication bus, and it is adopted by signal
Line concentration is connected with each lithium ion Soft Roll monomer battery core, passes through for euqalizing current；Described battery management system
Circuit board is arranged on the termination of battery modules, and it carries out data communication by connector and external system, and it leads to
Cross internal communication bus to be connected with the safety protective circuit of battery modules, control safety protective circuit action in pole
Implementing protection in the case of end, it is connected with the equalizing circuit of battery modules by internal communication bus, controls all
Weighing apparatus circuit opens and closes, and it is connected with each lithium ion Soft Roll monomer battery core both positive and negative polarity by signals collecting line,
Reading the voltage data of lithium ion Soft Roll monomer battery core, it is passed by the temperature of signals collecting line with battery modules
Sensor is connected, and reads the state of temperature information of battery modules, and it is by the electricity of signals collecting line with battery modules
Flow sensor is connected, and reads the charging and discharging currents information of battery modules.
A kind of lithium ion battery module thermal balance management system the most according to claim 1, its feature exists
In: described conductive structure part is adjacent to lithium ion Soft Roll monomer battery core, quick for the heat when heating starting
Import each lithium ion Soft Roll monomer battery core；When heat radiation starts, heat quickly derives each lithium ion Soft Roll list
Body battery core.
A kind of lithium ion battery module thermal balance management system the most according to claim 1, its feature exists
In: described equilibrium and temperature control circuit board include that equalizaing charge signal driving circuits, heating film are opened
OFF signal driving circuits, heating film relay indicating light driving circuits form；It is at thermal balance
Primarily serving the purpose of in system: heating film switching signal driving circuits be used for controlling heating film start or
Quitting work, it is correct that heating film relay indicating light driving circuits is used for controlling heating film relay indicating light
Instruction heating film duty.
A kind of lithium ion battery module thermal balance management system the most according to claim 1, its feature exists
In: described battery management system circuit board obtains each lithium ion Soft Roll list by its battery status acquisition chip
The state parameter information of body battery core, defeated by the communication bus within battery modules after its single-chip microcomputer computing
Go out equilibrium, temperature these control signal to equilibrium and temperature control circuit board；It is by outside battery modules
The control that the communication bus output voltage of battery modules, SOC, these status informations of temperature communicate to other
System processed；Its primarily serving the purpose of in heat balance system: obtain the internal Current Temperatures information of battery modules,
Compare with parameter preset, and make startup heating and stop the instruction of heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610472033.5A CN105958137B (en) | 2016-06-23 | 2016-06-23 | A kind of lithium ion battery mould group thermal balance management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610472033.5A CN105958137B (en) | 2016-06-23 | 2016-06-23 | A kind of lithium ion battery mould group thermal balance management system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105958137A true CN105958137A (en) | 2016-09-21 |
| CN105958137B CN105958137B (en) | 2019-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610472033.5A Expired - Fee Related CN105958137B (en) | 2016-06-23 | 2016-06-23 | A kind of lithium ion battery mould group thermal balance management system |
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Cited By (7)
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| CN106785239A (en) * | 2017-01-17 | 2017-05-31 | 华霆（合肥）动力技术有限公司 | Even distribution type heat management system and battery |
| CN108899613A (en) * | 2018-06-01 | 2018-11-27 | 合肥国轩高科动力能源有限公司 | Self-heating circuit of power battery |
| CN109037838A (en) * | 2018-07-26 | 2018-12-18 | 重庆工程职业技术学院 | Car lithium battery management system |
| CN109560350A (en) * | 2018-12-04 | 2019-04-02 | 卧龙电气集团股份有限公司 | A kind of Li-ion batteries piles that can be worked in low temperature environment |
| CN109742458A (en) * | 2018-11-28 | 2019-05-10 | 上海松岳电源科技有限公司 | A kind of device promoted for electrokinetic cell system lithium battery group charging and discharging capabilities |
| CN114281122A (en) * | 2022-03-04 | 2022-04-05 | 南京漫童智能技术有限公司 | Improved generation low temperature self-heating device suitable for intelligent terminal |
| CN116093472A (en) * | 2022-12-15 | 2023-05-09 | 合众新能源汽车股份有限公司 | Protection method and device for power battery |
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| CN109560350A (en) * | 2018-12-04 | 2019-04-02 | 卧龙电气集团股份有限公司 | A kind of Li-ion batteries piles that can be worked in low temperature environment |
| CN114281122A (en) * | 2022-03-04 | 2022-04-05 | 南京漫童智能技术有限公司 | Improved generation low temperature self-heating device suitable for intelligent terminal |
| CN116093472A (en) * | 2022-12-15 | 2023-05-09 | 合众新能源汽车股份有限公司 | Protection method and device for power battery |
| CN116093472B (en) * | 2022-12-15 | 2024-02-13 | 合众新能源汽车股份有限公司 | Protection method and device for power battery |
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| CN105958137B (en) | 2019-05-14 |
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