CN110718726A - Cylindrical battery module cooling system and battery module - Google Patents
Cylindrical battery module cooling system and battery module Download PDFInfo
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- CN110718726A CN110718726A CN201911071298.4A CN201911071298A CN110718726A CN 110718726 A CN110718726 A CN 110718726A CN 201911071298 A CN201911071298 A CN 201911071298A CN 110718726 A CN110718726 A CN 110718726A
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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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/643—Cylindrical cells
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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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- 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
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
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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
- H01M10/60—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
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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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
-
- 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
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
-
- 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
- H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
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- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a cylindrical battery module cooling system which comprises an insulating support, a heat conducting layer and a heat exchange plate, wherein a battery cell matching groove is formed in a battery cell contact surface of the insulating support, and a heat exchange end surface of the insulating support is in contact with the heat exchange plate; the heat conduction layer is coated and arranged on the battery cell contact surface and the heat exchange end surface of the insulating support; the heat conducting layer comprises an insulating surface layer, a graphite film and an elastic buffer layer. This cylindrical battery module cooling system regards as the support with insulating support, and insulating support's electric core contact surface and heat transfer terminal surface are provided with the heat-conducting layer that contains insulating layer, graphite membrane and elastic buffer layer, and electric core, heat-conducting layer and heat transfer board make up into effectual solid fixed connection and touch heat-conducting structure. The invention also discloses a battery module.
Description
Technical Field
The invention relates to the technical field of lithium battery production, in particular to a cylindrical battery module cooling system and a battery module.
Background
The heat dispersion and the temperature equalization performance of the battery pack have great influence on the reliability, the cycle life and the charge and discharge performance of a battery system, a module and a battery core. The main heat radiation structure of the cylindrical battery module in the prior art is liquid cooling and aluminum cooling.
The liquid cooling refers to a serpentine pipe with serial or parallel flow channels arranged between the battery cells, as described in CN106972218A, and includes cooling channels distributed in two side surfaces of the battery pack and having a cooling medium circulating therein, and heat generated by the battery pack is sequentially transferred to the heat pipe, the channel body and the cooling medium. The disadvantages of this solution are: the battery module has a complex structure, and the consistency is difficult to ensure during mass production, so that the battery module is not beneficial to automatic production. In addition, the design scheme of the serpentine cooling pipe of the serial flow channel can increase the flow resistance of the cooling system, increase the pressure loss and increase the energy consumption.
The aluminum cooling structure is the heat dissipation support described in CN105870373A, and a positioning portion matched with the cylindrical battery cell is arranged on the aluminum heat dissipation support. Further, when the battery cell has a large heat release during high-rate charge and discharge, the surface of the bracket is preferably subjected to insulation treatment. The scheme has the defects that although aluminum is light metal, the weight of the battery pack is obviously increased by using a plurality of brackets; secondly, a common insulation treatment for aluminum materials is generally oxidation-skinned alumina, which has a thermal conductivity of 20W/m.K (20 ℃), pure aluminum has a thermal conductivity of 237W/m.K, and the thermal conductivity of metal decreases with increasing temperature. The aluminum bracket after insulation treatment has centralized heat at the positioning part and is not suitable for cylindrical cells with large heat release.
Disclosure of Invention
One of the objectives of the present invention is to overcome the drawbacks of the prior art, and to provide a cylindrical battery module cooling system, which has a simple structure and high heat conduction efficiency.
In order to achieve the technical effects, the technical scheme of the invention is as follows: a cylindrical battery module cooling system is characterized by comprising an insulating support, a heat conducting layer and a heat exchange plate, wherein a battery cell matching groove is formed in a battery cell contact surface of the insulating support, and a heat exchange end surface of the insulating support is in contact with the heat exchange plate; the heat conduction layer is arranged on the cell contact surface and the heat exchange end surface of the insulating support in a wrapping mode; the heat conducting layer comprises an insulating surface layer, a graphite film and an elastic buffer layer.
The preferred technical scheme is that a through hole is further formed in the insulating support, and the through hole is axially consistent with the battery cell matching groove.
The preferable technical scheme is that the insulating support is made of polycarbonate.
The preferable technical scheme is that the elastic buffer layer is made of foam, and the thickness of the elastic buffer layer is 0.5-0.8 mm.
The preferable technical scheme is that the insulating surface layer is a PET film, and the thickness of the PET film is 5-30 mu m.
The preferable technical scheme is that a heat conducting glue layer or a heat conducting pad is arranged between the heat exchanging plate and the heat exchanging end face of the insulating support.
The invention also provides a battery module, which is characterized by comprising the cylindrical battery module cooling system, a module support and a plurality of battery cores, wherein the insulating support is clamped between adjacent rows of battery cores, and the heat exchange plate is fixedly arranged on at least one side of a battery core array formed by the plurality of battery cores.
The preferred technical scheme is that the module support and the insulating support are provided with matched positioning parts.
The invention has the advantages and beneficial effects that:
the cylindrical battery module cooling system takes the insulating support as a support, the electric core contact surface and the heat exchange end surface of the insulating support are provided with heat conduction layers comprising insulating layers, graphite films and elastic buffer layers, and the electric core, the heat conduction layers and the heat exchange plates are combined into an effective solid-solid contact heat conduction structure;
the graphite film has good plane heat conductivity, and plane coefficient of heat conductivity is up to 1500w/Mk, can be quick with electric core heat conduction to heat transfer board liquid cooling board, perhaps with the heat conduction of heat transfer board hot plate to electric core, can effectively ensure the temperature uniformity and the uniformity of electric core, improve battery system's cycle life.
Drawings
Fig. 1 is a schematic perspective view of a cylindrical battery module cooling system according to embodiment 1;
FIG. 2 is a front view of embodiment 1;
FIG. 3 is an enlarged view of a portion of FIG. 2;
fig. 4 is a schematic front view of a cylindrical battery module cooling system according to embodiment 2;
fig. 5 is a schematic perspective view of a battery module according to embodiment 3;
fig. 6 is a schematic perspective view of a battery module according to embodiment 4;
FIG. 7 is a partial enlarged view of B in FIG. 6;
in the figure: 1. an insulating support; 2. a heat conductive layer; 3. a heat exchange plate; 4. a weight-reducing through hole; 5. a second insulating support; 6. an electric core; 7. a first module holder; 8. a second module holder; 9. a recessed portion; 10. a thermally conductive pad; a. the battery core is matched with the groove; b. a convex ring; c. a V-shaped bulge; d. approximately triangular-shaped convex.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Insulating support
The effect of insulating support is for the heat-conducting layer provides the support, and is concrete, heat-conducting layer and insulating support fixed connection, and the electric core cooperation groove of insulating support can ensure that the contact heat transfer area of heat-conducting layer and electric core is controlled towards big. The effect of insulating support still lies in when guaranteeing heat conduction efficiency, improves battery package factor of safety. In addition, the density of the insulating material is low, contributing to weight reduction of the battery pack. The further preferred insulating material is polycarbonate, and the good dimensional stability of polycarbonate ensures the abundant contact of electric core and heat-conducting layer, and the fatigue resistance, weatherability and high strength of polycarbonate satisfy the requirement of module package assembly strength.
Heat exchange plate
The heat exchange plate is a cold plate or a heating plate in the module, or the cold plate and the heating plate are arranged in the module at the same time. When the charging is carried out at a large multiplying power, the heat exchange plate is a cold plate, the cold plate is selected from the existing liquid cooling plate or air cooling fin radiator, and the preferred cold plate is a liquid cooling plate. Furthermore, a heat conducting adhesive layer or a heat conducting pad is arranged between the heat exchanging plate and the heat exchanging end face of the insulating support. The heat conducting glue and the heat conducting pad are used for promoting the heat conducting layer to be in full contact with the heat exchange plate, so that the heat conducting efficiency is improved, and the heat conducting glue also has the function of bonding and fixing.
Through hole
The main effect of through-hole lies in losing weight, accords with the design trend of battery package lightweight. When being provided with electric core cooperation groove on insulating support's two opposite flank, under the prerequisite of guaranteeing insulating support mechanical strength, the through-hole setting is between four adjacent electric core cooperation grooves. The cross section of the through-hole is not particularly limited. The through hole can also be used as a positioning hole, and a locking screw of the module is arranged in the positioning hole in a penetrating way and can be detachably connected with the module bracket and the insulating bracket.
Heat conducting layer
The heat conducting layer comprises an insulating surface layer, a graphite film and an elastic buffer layer. Preferably, the graphite film is directly compounded with the insulating surface layer, and the elastic buffer layer is positioned between the graphite film and the insulating support. The insulating surface layer is positioned on the surface of the heat conducting layer and is in direct contact with the battery core, the graphite of the graphite film has electric conductivity, and the insulating surface layer is coated on the surface of the graphite film. Compared with the aluminum support in the prior art, the graphite film can quickly finish heat transfer in the film surface and reduce heat conducted to the insulating support.
And the heat conducting layer is fully contacted with the cylindrical surface of the battery cell by utilizing the elasticity of the elastic buffer layer. The elastic buffer layer is preferably foam. The foam has certain compression amount and heat insulation performance, and further reduces heat conducted to the insulating support. Further, the foam is silica gel foam and closed-cell EPDM, and the material brand is HT-800.
Furthermore, the silica gel foam double-sided back glue, and the silica gel brand face, the insulating support and the graphite film are bonded through the silica gel foam back glue. PET insulating film and graphite membrane pass through equipment hot pressing and combine, and is further, the heat-conducting layer has good insulating properties, can be directly with cylinder electricity core surface contact, and the heat dissipation of heat in the electricity core working process is dissipated in the heat-conducting layer as medium and the abundant contact of heat exchange plate surface. Furthermore, the ultrahigh heat conductivity of the heat conduction layer can ensure the temperature uniformity of all the battery cells.
The battery module includes module support, electric core usually and wears to locate the module support in and the locking screw between the electric core. The module support includes first support and second support, all is provided with on first support and the second support with electric core tip matched with pilot hole. UV glue is filled between the grouped electric cores and the assembling holes for fixation.
Positioning part of module support and insulating support
The positioning portions of the module holder and the insulating holder facilitate quick assembly. Specifically, the positioning portion is a convex portion and a concave portion which are matched with each other, for example, the insulating bracket is provided with the convex portion, and the module bracket is provided with the concave portion; or the insulating support is provided with a sunken part, and the module support is provided with a convex part.
Example 1
As shown in fig. 1-2, a cylindrical battery module cooling system in embodiment 1 includes a first insulating support 1, a heat conducting layer 2, and a heat exchange plate 3, a cell mating groove a is formed on a cell contact surface of the first insulating support 1, and a heat exchange end surface of the first insulating support 1 contacts the heat exchange plate 3; the heat conduction layer 2 is arranged on the cell contact surface and the heat exchange end surface of the first insulating support 1 in a wrapping mode; the heat conductive layer 2 includes an insulating surface layer 21, a graphite film 22, and an elastic buffer layer 23.
And a weight-reducing through hole 4 which is axially consistent with the battery cell matching groove a is formed in the first insulating support 1.
The first insulating support 1 is made of polycarbonate.
The elastic buffer layer is made of foam, and the thickness of the elastic buffer layer is 0.5-0.8 mm.
The insulating surface layer is a PET film, and the thickness of the PET film is 5-30 mu m.
The first insulating support 1 of example 1 comprises only the following structure: two opposite side surfaces of the first insulating support 1 are provided with battery cell matching grooves a. The number of the battery cell rows in the assembled battery module is N, and the number of the insulating supports is N-1; the heat exchange plate is a liquid cooling plate with a coiled pipe inside, and the number of the liquid cooling plates is 1; in embodiment 1, the heat exchange end surface of the first insulating support 1 is a plane, and the heat conduction layer 2 coated on the heat exchange end surface is in planar contact with the heat exchange plate 3 through the heat conduction pad 10.
Example 2
As shown in fig. 3 to 4, embodiment 2 is based on embodiment 1, except that embodiment 2 further includes a second insulating support 5 having the following structure: one side surface of the second insulating support 5 is provided with a battery cell matching groove a, and the other side surface is a plane. The number of rows of electric cores in the assembled battery module is N, the number of the insulating supports is N +1, the arrangement mode sequentially comprises a second insulating support 5, N-1 first insulating supports 1 and a second insulating support 5, namely, the planar side surface of the second insulating support 5 is the surface of the battery module.
Example 3
As shown in fig. 5, the battery module of embodiment 3 includes the cylindrical battery module cooling system of embodiment 1, and further includes a battery core 6, a first module support 7 and a second module support 8, where the first module support 7 and the second module support 8 are both provided with a recess 9, the first insulating support 1 is provided with a protrusion matching with the recess 9, and the protrusion on the first insulating support 1 includes a protruding ring b communicated with the weight-reducing through hole 4 and V-shaped protrusions c located at two ends of the insulating support.
Example 4
As shown in fig. 6 to 7, example 4 is based on the cylindrical battery module cooling system of example 2, and the protrusions on the 2 nd insulating support 1 are approximately triangular-shaped protrusions d.
The battery module further includes known straps, insulating plates, a battery management system BMS, and the like.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A cylindrical battery module cooling system is characterized by comprising an insulating support, a heat conducting layer and a heat exchange plate, wherein a battery cell matching groove is formed in a battery cell contact surface of the insulating support, and a heat exchange end surface of the insulating support is in contact with the heat exchange plate; the heat conduction layer is arranged on the cell contact surface and the heat exchange end surface of the insulating support in a wrapping mode; the heat conducting layer comprises an insulating surface layer, a graphite film and an elastic buffer layer.
2. The cylindrical battery module cooling system of claim 1, wherein the insulating support is further provided with a through hole therein, and the through hole is axially aligned with the cell mating groove.
3. The system as claimed in claim 1, wherein the insulating support is made of polycarbonate.
4. The cylindrical battery module cooling system of claim 1, wherein the elastic buffer layer is made of foam, and the thickness of the elastic buffer layer is 0.5-0.8 mm.
5. The cylindrical battery module cooling system according to claim 1, wherein the insulating surface layer is a PET film having a thickness of 5 to 30 μm.
6. The cylindrical battery module cooling system according to claim 1, wherein a heat conducting glue layer or a heat conducting pad is disposed between the heat exchanging plate and the heat exchanging end surface of the insulating support.
7. A battery module, comprising the cylindrical battery module cooling system of any one of claims 1 to 6, further comprising a module support and a plurality of cells, wherein the insulating support is clamped between adjacent rows of cells, and the heat exchange plate is fixedly disposed on at least one side of a cell array formed by the plurality of cells.
8. The battery module according to claim 7, wherein the module holder and the insulating holder are provided with mating positioning parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071298.4A CN110718726A (en) | 2019-11-05 | 2019-11-05 | Cylindrical battery module cooling system and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071298.4A CN110718726A (en) | 2019-11-05 | 2019-11-05 | Cylindrical battery module cooling system and battery module |
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| Publication Number | Publication Date |
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| CN110718726A true CN110718726A (en) | 2020-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911071298.4A Pending CN110718726A (en) | 2019-11-05 | 2019-11-05 | Cylindrical battery module cooling system and battery module |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740063A (en) * | 2020-07-10 | 2020-10-02 | 大连理工大学 | Cylindrical battery module support with bubble baffle for two-phase immersion liquid cooling |
| CN112448082A (en) * | 2020-12-08 | 2021-03-05 | 湖北亿纬动力有限公司 | Cylindrical battery module |
| CN112621288A (en) * | 2020-12-11 | 2021-04-09 | 信联智翊科技(苏州)有限公司 | Efficient batch machining jig based on fan-shaped bushings and operation method thereof |
| CN112736353A (en) * | 2020-12-29 | 2021-04-30 | 缙云县锐普电子科技有限公司 | Anti-theft battery device for sharing scooter |
| WO2023070263A1 (en) * | 2021-10-25 | 2023-05-04 | 高柏科技股份有限公司 | Multilayer thermal interface material structure and preparation method therefor, and battery apparatus having same |
| WO2023173739A1 (en) * | 2022-04-20 | 2023-09-21 | 湖北亿纬动力有限公司 | Battery pack and vehicle |
| CN117147344A (en) * | 2023-10-31 | 2023-12-01 | 宁德时代新能源科技股份有限公司 | Fatigue test equipment for heat exchange plate of battery pack |
-
2019
- 2019-11-05 CN CN201911071298.4A patent/CN110718726A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740063A (en) * | 2020-07-10 | 2020-10-02 | 大连理工大学 | Cylindrical battery module support with bubble baffle for two-phase immersion liquid cooling |
| CN111740063B (en) * | 2020-07-10 | 2024-05-10 | 大连理工大学 | Cylindrical battery module support with bubble baffle for two-phase immersion liquid cooling |
| CN112448082A (en) * | 2020-12-08 | 2021-03-05 | 湖北亿纬动力有限公司 | Cylindrical battery module |
| WO2022121105A1 (en) * | 2020-12-08 | 2022-06-16 | 湖北亿纬动力有限公司 | Cylindrical battery module |
| CN112621288A (en) * | 2020-12-11 | 2021-04-09 | 信联智翊科技(苏州)有限公司 | Efficient batch machining jig based on fan-shaped bushings and operation method thereof |
| CN112736353A (en) * | 2020-12-29 | 2021-04-30 | 缙云县锐普电子科技有限公司 | Anti-theft battery device for sharing scooter |
| WO2023070263A1 (en) * | 2021-10-25 | 2023-05-04 | 高柏科技股份有限公司 | Multilayer thermal interface material structure and preparation method therefor, and battery apparatus having same |
| WO2023173739A1 (en) * | 2022-04-20 | 2023-09-21 | 湖北亿纬动力有限公司 | Battery pack and vehicle |
| CN117147344A (en) * | 2023-10-31 | 2023-12-01 | 宁德时代新能源科技股份有限公司 | Fatigue test equipment for heat exchange plate of battery pack |
| CN117147344B (en) * | 2023-10-31 | 2024-03-29 | 宁德时代新能源科技股份有限公司 | Fatigue test equipment for heat exchange plate of battery pack |
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