Cooling plate assembly, battery module, assembling method for cooling plate assembly, and battery pack

Abstract

The present application provides a cooling plate assembly and a battery module. The cooling plate assembly comprises: a cooling plate, the cooling plate being used for controlling the temperature of a battery module; and at least one current collector, the current collector being connected to the end of the cooling plate by means of bonding. The cooling plate assembly is conducive to improvement of the stability of connection between the cooling plate and the current collector and improvement of the assembly efficiency.

Description

Cooling plate assembly, battery module, cooling plate assembly assembly method, and battery pack

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on February 2, 2024, with application number 202420271143.5. The entire contents of the above application are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of battery technology, and in particular to a cooling plate assembly, a battery module, an assembly method of a cooling plate assembly, and a battery pack. Background Art

[0003] The battery types used in new energy vehicles mainly include cylindrical batteries, square batteries and soft-pack batteries. Compared with the other two types of batteries, the 4690 large cylindrical battery has higher energy density, better safety and stability, and lower cost. It has received more recognition and attention from consumers and is expected to become the future development trend of batteries for new energy vehicles.

[0004] In the related technologies, large cylindrical battery packs have the disadvantage of generating too much heat. The double-sided liquid-cooled serpentine cooling plate assembly solution has excellent heat dissipation, making it the first choice for cylindrical battery packs. The weight reduction design of cylindrical battery packs has currently become a key issue for the use of cylindrical battery packs in new energy vehicles. The number of serpentine tubes in the double-sided liquid-cooled serpentine cooling plate assembly is doubled compared to the number of serpentine tubes in the single-sided serpentine cooling plate assembly. Therefore, the weight reduction design of the double-sided liquid-cooled serpentine cooling plate assembly has become the key to the application of the double-sided liquid-cooled serpentine cooling plate assembly in cylindrical battery packs. SUMMARY OF THE INVENTION

[0005] In the related art, the serpentine cooling plate assembly includes a serpentine cooling plate and a current collector connected to both ends of the serpentine cooling plate. The serpentine cooling plate is preferably made of 3 series aluminum. The serpentine cooling plate and the current collector made of 3 series aluminum are welded. This connection method has low grouping efficiency and relatively poor reliability.

[0006] In a first aspect, an embodiment of the present application provides a cooling plate assembly, the cooling plate assembly comprising:

[0007] A cooling plate, which is used to control the temperature of the battery module;

[0008] At least one current collector is connected to the end of the cooling plate by bonding.

[0009] In a second aspect, an embodiment of the present application provides an assembly method for the above-mentioned cooling plate assembly, the assembly method comprising:

[0010] Applying a first adhesive and a second adhesive to the first adhesive portion and the second adhesive portion of the first sub-shell of the current collector respectively;

[0011] Applying the first adhesive and the second adhesive to the first adhesive portion and the second adhesive portion of the second sub-shell of the current collector, respectively;

[0012] applying a third adhesive on the first outer side of the first sub-housing;

[0013] applying the third adhesive on the second outer side of the second sub-housing;

[0014] bonding the first outer side surface of the first sub-housing to the cooling plate;

[0015] The second outer side surface of the second partial housing is bonded to the cooling plate.

[0016] In a third aspect, an embodiment of the present application provides a battery module, which includes the above-mentioned multiple cooling plate assemblies and multiple battery packs, and each of the cooling plate assemblies is arranged between adjacent battery packs.

[0017] In a fourth aspect, an embodiment of the present application provides a battery pack, comprising a case and a plurality of battery modules arranged inside the case, wherein the battery modules include the above-mentioned battery modules. Beneficial effects

[0018] The cooling assembly provided in the present application can improve the grouping efficiency of the current collector and the cooling plate and improve the connection stability between the current collector and the cooling plate by bonding the current collector and the cooling plate.

[0019] The assembly method provided in the present application and applied to the above cooling assembly can improve the assembly efficiency of the current collector and the cooling plate by bonding the first sub-shell and the second sub-shell of the current collector to the cooling plate respectively.

[0020] The battery module provided in this application is designed based on the above-mentioned cooling assembly. Its beneficial effects can be found in the beneficial effects of the above-mentioned cooling assembly, which will not be described in detail here.

[0021] The battery pack provided in this application is designed based on the above-mentioned battery module. Its beneficial effects can be found in the beneficial effects of the above-mentioned battery module, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a perspective schematic diagram of a cooling plate assembly provided in an embodiment of the present application;

[0023] FIG2 is an exploded view of a cooling plate assembly according to an embodiment of the present application;

[0024] FIG3 is a partial enlarged view of FIG2;

[0025] FIG4 is a schematic cross-sectional view of the bonding between the connection portion of the current collector and the cooling plate provided in an embodiment of the present application;

[0026] FIG5 is a schematic diagram of a cross-sectional structure of a current collector provided in an embodiment of the present application;

[0027] FIG6 is a schematic diagram of another cross-sectional structure of a current collector provided in an embodiment of the present application;

[0028] FIG7 is a schematic diagram of the split structure of the current collector provided in an embodiment of the present application;

[0029] FIG8 is a perspective view of a first current collector provided in an embodiment of the present application;

[0030] FIG9 is a perspective view of a second current collector provided in an embodiment of the present application;

[0031] FIG10 is a schematic diagram of a structure in which different adhesives are coated on the surface of a sub-shell of a current collector according to an embodiment of the present application;

[0032] Figure Number:

[0033] 100. Cooling plate assembly;

[0034] 10. Cooling plate; 11. Connecting portion; 111. First connecting portion; 112. Second connecting portion; 12. Flow channel; 13. Base portion; 14. First flange;

[0035] 20. Current collector; 21. First current collector; 211. First housing; 212. First closed end; 213. First open end; 22. Second current collector; 221. Second housing; 222. Second closed end; 223. Second open end; 23. Accommodating cavity; 24. Adhesive portion; 241. First adhesive portion; 242. Second adhesive portion; 243. Reinforcement structure; 2431. First groove; 2432. Second groove; 251. First sub-housing; 2511. First outer side surface; 252. Second sub-housing; 2521. Second outer side surface; 261. Inlet; 262. Outlet; 27. Partition wall; 28. Main body; 29. ​​Second flange;

[0036] 31. First adhesive; 32. Second adhesive; 33. Third adhesive. Modes for Carrying Out the Invention

[0037] One embodiment of the present application provides a battery module, which includes a plurality of batteries arranged in a matrix, wherein the plurality of batteries are arranged side by side along a first direction to form a battery group, and the plurality of battery groups are arranged at intervals along a second direction to form a battery module, and the first direction and the second direction are arranged perpendicularly.

[0038] The batteries in this battery module are cylindrical batteries, which can be 4690 large cylindrical batteries, 4680 large cylindrical batteries, 46135 large cylindrical batteries, or 42300 large cylindrical batteries in related technologies. Multiple cylindrical batteries are connected in series, parallel, or mixed through connecting plates to ensure that the battery module has a suitable capacity.

[0039] An embodiment of the present application further provides a battery pack, which includes a box and at least one battery module arranged inside the box. The battery pack can be used in new energy vehicles.

[0040] The battery module also includes a cooling device, which includes multiple cooling plate assemblies, liquid inlet pipes and liquid outlet pipes. The cooling plate assembly 100 used for large cylindrical batteries preferably adopts a double-sided serpentine cooling plate assembly 100. The cooling plate assembly 100 includes a cooling plate 10 and at least one current collector 20 connected to the end of the cooling plate 10. The cooling plate 10 is arranged between two adjacent battery packs. The cooling plate 10 is arranged to have a serpentine corrugated structure that is adapted to the cylindrical side of the cylindrical battery, that is, the curvature of the outer surface of the cooling plate 10 is consistent with the curvature of the cylindrical side of the cylindrical battery, so that one side of the cooling plate 10 abuts against the outer side of a battery pack, and the other side of the cooling plate 10 abuts against the outer side of another adjacent battery pack.

[0041] As shown in FIG. 1 to FIG. 3 , the cooling plate assembly 100 includes a cooling plate 10 and a first current collector 21 and a second current collector 22 respectively connected to both ends of the cooling plate 10 .

[0042] In the related art, large cylindrical battery packs have the problem of high heat generation. The double-sided liquid-cooled serpentine cooling plate assembly 100 solution has excellent heat dissipation, making it the first choice for cylindrical battery packs. The weight reduction design of cylindrical battery packs has currently become a key issue for the use of cylindrical battery packs in new energy vehicles. The number of serpentine tubes in the double-sided liquid-cooled serpentine cooling plate assembly 100 is doubled relative to the number of serpentine tubes in the single-sided serpentine cooling plate assembly 100. Therefore, the weight reduction design of the double-sided liquid-cooled serpentine cooling plate assembly 100 has become a key issue for the application of the double-sided liquid-cooled serpentine cooling plate assembly 100 in cylindrical battery packs. The serpentine cooling plate assembly 100 includes a serpentine cooling plate 10 and a current collector 20 connected to both ends of the serpentine cooling plate 10. The serpentine cooling plate 10 preferably uses 3 series aluminum. 3 series aluminum has good thermal conductivity. Therefore, the cooling plate 10 in the serpentine cooling plate assembly 100 uses 3 series aluminum and cannot be replaced. Therefore, only the current collector 20 connected to both ends of the serpentine cooling plate 10 can be designed to reduce weight.

[0043] Through research, the inventors discovered that a current collector 20 made of plastic material can be significantly lighter than one made of 3-series aluminum. In one example, a single cooling plate assembly 100 made of 3-series aluminum to form the current collector 20 weighs 0.377 kg, while a single cooling plate assembly 100 made of plastic material to form the current collector 20 weighs 0.32 kg. The weight of a single serpentine cooling plate assembly 100 can be reduced by 15%, which is crucial for the weight reduction design of the cooling device inside the battery pack. Furthermore, the plastic current collector 20 can be set to different shapes and sizes by adjusting the mold for plastic molding, so that it can be designed to match the different spatial shapes inside the battery pack, which is beneficial to the miniaturization design of the battery pack.

[0044] Plastic materials suitable for preparing the above-mentioned current collector include PA (polyamide) materials. PA materials have corrosion resistance, high temperature resistance, and high strength.

[0045] When the current collector 20 and the cooling plate 10 are both made of aluminum, the current collector 20 and the cooling plate 10 are connected by welding. When the current collector 20 is made of plastic material, the current collector 20 and the cooling plate 10 are still connected by welding, which will result in poor connection reliability between the current collector 20 and the cooling plate 10 and low grouping efficiency. Therefore, the connection method between the plastic current collector 20 and the cooling plate 10 becomes the key to the improved design of the double-sided serpentine cooling plate assembly 100.

[0046] In the embodiment of the present application, the plastic current collector 20 and the cooling plate 10 are connected by bonding, thereby improving the stability of the connection between the current collector 20 and the cooling plate 10 and the grouping efficiency between the two components.

[0047] Further referring to Figures 2 to 6, Figure 2 is an exploded view of the two current collectors 20 connected to the cooling plate 10 after being separated from the cooling plate 10, and Figure 3 is a partial enlarged view of Figure 2; Figure 4 is a cross-sectional view of the connecting portion 11 of the cooling plate 10 after being bonded to the current collector 20, and Figures 5 and 6 are schematic diagrams of two cross-sectional structures of the current collector 20.

[0048] The current collector 20 includes an open receiving cavity 23, and the current collector 20 also includes at least one bonding portion 24 arranged inside the receiving cavity 23, and the bonding portion 24 is arranged close to the open end of the receiving cavity 23; the cooling plate 10 includes a connecting portion 11, and the connecting portion 11 enters the interior of the receiving cavity 23 through the opening of the receiving cavity 23 and is bonded to the bonding portion 24 by at least one adhesive.

[0049] During the assembly process, adhesive is applied to the bonding portion 24 of the current collector 20, and the cooling plate 10 is inserted into the interior of the receiving cavity 23 through the opening of the receiving cavity 23. The connecting portion 11 of the cooling plate 10 is adhered to the bonding portion 24 of the current collector 20 by adhesive, which facilitates assembly.

[0050] In some embodiments provided in the present application, as shown in Figures 5 and 10, at least one of the bonding portions 24 includes a first bonding portion 241 and a second bonding portion 242, wherein the second bonding portion 242 is closer to the open end of the accommodating cavity 23 relative to the first bonding portion 241, and at least one of the adhesives includes a first adhesive 31 and a second adhesive 32 with different viscosities, wherein the first bonding portion 241 is bonded to the first portion of the connecting portion 11 through the first adhesive 31, and the second bonding portion 242 is bonded to the second portion of the connecting portion 11 through the second adhesive 32, wherein the viscosity of the first adhesive 31 is less than that of the second adhesive 32.

[0051] Among them, the low-viscosity first adhesive 31 is used to ensure the sealing of the connection between the cooling plate 10 and the current collector 20, and prevent leakage at the connection between the current collector 20 and the cooling plate 10. The high-viscosity second adhesive 32 is used to ensure the bonding strength between the cooling plate 10 and the current collector 20, and prevent the cooling plate 10 and the current collector 20 from loosening during collision and shaking of the battery pack.

[0052] For example, the first adhesive 31 uses UV glue (shadowless glue) with medium-high viscosity, good surface drying effect, good bonding effect on plastics, high temperature resistance, and good anti-aging effect. Suitable UV glue includes 8651 glue. The second adhesive 32 uses PU (polyurethane) glue with high strength bonding performance, good flame retardant performance, and can be quickly cured at room temperature. Suitable PU glue includes 6306 glue.

[0053] In order to further enhance the stability of the connection between the cooling plate 10 and the current collector 20, a reinforcing structure 243 is provided on the inner surface of the bonding portion 24 of the current collector 20 or the outer surface of the connecting portion 11 of the cooling plate 10. The reinforcing structure 243 may be a groove or a protrusion, thereby increasing the bonding area between the current collector 20 and the cooling plate 10. A groove is provided on the inner surface of the bonding portion 24 of the current collector 20, and a protrusion may be provided on the outer surface of the connecting portion 11 of the cooling plate 10 accordingly, and the protrusion may be embedded in the groove, or a protrusion is provided on the inner surface of the bonding portion 24 of the current collector 20, and a groove may be provided on the outer surface of the connecting portion 11 of the cooling plate 10 accordingly, and the protrusion may be embedded in the groove, thereby enhancing the connection strength between the current collector 20 and the cooling plate 10.

[0054] As shown in FIG. 6 , the reinforcement structure 243 includes a first groove 2431 and a second groove 2432 spaced apart on the bonding portion 24 of the current collector 20 . The first groove 2431 can be used to accommodate the first adhesive 31 , and the second groove 2432 can be used to accommodate the second adhesive 32 .

[0055] Further referring to FIG. 7 , in some embodiments, the current collector 20 includes a first sub-shell 251 and a second sub-shell 252 connected to each other. The first sub-shell 251 and the second sub-shell 252 are bonded together by a third adhesive 33. A portion of the bonding portion 24 is disposed on the first sub-shell 251, and another portion of the bonding portion 24 is disposed on the second sub-shell 252. The third adhesive 33 can be made of the same type of adhesive as the second adhesive 32.

[0056] The first sub-housing 251 and the second sub-housing 252 can be separated along the thickness direction of the current collector 20. The first sub-housing 251 and the second sub-housing 252 are basically symmetrically arranged. A portion of the first bonding portion 241 is arranged on the first sub-housing 251, and another portion of the first bonding portion 241 is arranged on the second sub-housing 252. A portion of the second bonding portion 242 is arranged on the first sub-housing 251, and another portion of the second bonding portion 242 is arranged on the second sub-housing 252.

[0057] By providing the current collector 20 in a separate body, it is convenient to assemble the current collector 20 with the cooling plate 10. In an embodiment of the present application, an assembly method for the cooling plate assembly 100 is also provided, and the assembly method includes:

[0058] Apply a first adhesive 31 and a second adhesive 32 to the first adhesive portion 241 and the second adhesive portion 242 of the first sub-housing 251 of the current collector 20 , respectively.

[0059] Apply a first adhesive 31 and a second adhesive 32 to the first adhesive portion 241 and the second adhesive portion 242 of the second sub-housing 252 of the current collector 20 , respectively.

[0060] Applying a third adhesive 33 on the first outer side 2511 of the first sub-housing 251 ;

[0061] Applying a third adhesive 33 on the second outer side 2521 of the second sub-housing 252;

[0062] Bonding the first sub-housing 251 to a portion of the connecting portion 11 of the cooling plate 10;

[0063] The second outer side surface 2521 of the second partial housing 252 is bonded to the first outer side surface 2511 of the first partial housing 251 , and the second partial housing 252 is bonded to another portion of the connecting portion 11 of the cooling plate 10 .

[0064] The current collector 20 with the split structure is easier to assemble with the connecting portion 11 of the cooling plate 10 than the current collector 20 with the integrated structure, thereby improving the assembly efficiency.

[0065] Further referring to Figures 2 and 3, the cooling plate 10 includes a base portion 13, the connecting portion 11 is located at one end of the base portion 13, a first flange 14 is formed between the base portion 13 and the connecting portion 11, and the first flange 14 abuts against the side wall of the current collector 20.

[0066] The above-mentioned first flange 14 structure is used for operational positioning. At the same time, the abutment between the first flange 14 and the third outer side surface of the current collector 20 can be used to further enhance the stability of the connection between the current collector 20 and the cooling plate 10. In a preferred embodiment, an adhesive can be further coated on the third outer side surface of the current collector 20 to bond the third outer side surface to the first flange 14.

[0067] Further referring to FIG. 4 , the current collector 20 further includes a main body 28 . The bonding portion 24 is disposed at one end of the main body 28 . A second flange 29 is formed between the inner wall of the bonding portion 24 and the inner wall of the main body 28 .

[0068] The second flange 29 is provided to facilitate positioning of the bonding portion 24 , thereby facilitating application of adhesive to the bonding portion 24 and improving assembly efficiency.

[0069] As shown in Figures 1 to 4, at least one of the current collectors 20 includes a first current collector 21 and a second current collector 22, the first current collector 21 is bonded to one end of the cooling plate 10, and the second current collector 22 is bonded to the other end of the cooling plate 10; the first current collector 21 includes an inlet 261 and an outlet 262, the inlet 261 is used for access to a liquid inlet pipe, and the outlet 262 is used for access to a liquid outlet pipe.

[0070] A plurality of S-shaped extending flow channels 12 are provided in the inner cavity of the cooling plate 10, and partition walls are provided between adjacent flow channels 12. The inlet and outlet 262 of the flow channel 12 are both provided at the first end of the cooling plate 10. The coolant flowing out of the liquid inlet pipe enters the flow channel 12 through the inlet and flows to the second end of the cooling plate 10. The circulating liquid flows back to the first end from the second end of the cooling plate 10 and enters the liquid outlet pipe at the outlet 262. The provision of the above-mentioned U-shaped flow channel 12 is beneficial to improving the temperature uniformity of the cooling plate 10.

[0071] As shown in FIG8 , the first current collector 21 includes a first housing 211 having a first closed end 212 and a first open end 213 oppositely disposed. A partition wall 27 is further disposed within the first housing 211. The partition wall 27 is disposed between the inlet 261 and the outlet 262. The partition wall 27 extends from the first closed end 212 to the first open end 213 and terminates at one side of the bonding portion 24. The partition wall 27 is provided to separate the coolant flowing out of the liquid inlet pipe from the return liquid flowing into the liquid outlet pipe.

[0072] A bonding portion 24 is provided in the inner cavity of the first shell 211 , and the bonding portion 24 is used to bond with the first connecting portion 111 of the cooling plate 10 .

[0073] As shown in FIG9 , the second current collector 22 includes a second shell 221 having a second closed end 212 and a second open end 223 that are oppositely arranged. A bonding portion 24 is provided in the inner cavity of the second shell 221 , and the bonding portion 24 is used to bond with the second connecting portion 112 of the cooling plate 10 .

Claims

1. A cooling plate assembly (100), comprising: A cooling plate (10), the cooling plate (10) being configured to control the temperature of the battery module; At least one current collector (20), the current collector (20) being connected to the end of the cooling plate (10) by bonding.

2. The cooling plate assembly (100) according to claim 1, wherein The current collector (20) includes an open receiving cavity (23), and the current collector (20) also includes at least one bonding portion (24) arranged inside the receiving cavity (23), and the bonding portion (24) is arranged near the open end (213, 223) of the receiving cavity (23); the cooling plate (10) includes a connecting portion (11), and the connecting portion (11) and the bonding portion (24) are bonded by at least one adhesive.

3. The cooling plate assembly (100) according to claim 1, wherein The current collector (20) is made of plastic material.

4. The cooling plate assembly (100) according to claim 2, wherein The bonding portion (24) includes a first bonding portion (241) and a second bonding portion (242), the second bonding portion (242) being closer to the open end (213, 223) of the accommodating cavity (23) than the first bonding portion (241), the adhesive including a first adhesive (31) and a second adhesive (32) having different viscosities, the connecting portion (11) including a first part and a second part, the first bonding portion (241) being bonded to the first part of the connecting portion (11) through the first adhesive (31), and the second bonding portion (242) being bonded to the second part of the connecting portion (11) through the second adhesive (32), wherein the viscosity of the first adhesive (31) is less than the viscosity of the second adhesive (32).

5. The cooling plate assembly (100) according to claim 4, wherein The first adhesive (31) includes UV adhesive, and / or the second adhesive (32) includes PU adhesive.

6. The cooling plate assembly (100) according to claim 2, wherein A reinforcement structure (243) is provided on the bonding portion (24) or the connecting portion (11), and the reinforcement structure (243) includes a groove or a protrusion, and the groove or the protrusion is configured to increase the bonding area of the bonding portion (24) and the connecting portion (11).

7. The cooling plate assembly (100) according to claim 6, wherein The reinforcing structure (243) comprises a first groove (2431) and a second groove (2432) arranged at intervals on the bonding portion (24), the first groove (2431) being configured to accommodate the first adhesive (31), and the second groove (2432) being configured to accommodate the second adhesive (32).

8. The cooling plate assembly (100) according to claim 2, wherein The current collector (20) comprises a first sub-shell (251) and a second sub-shell (252) connected to each other, the first sub-shell (251) and the second sub-shell (252) being bonded to each other via a third adhesive (33), a portion of the bonding portion (24) being arranged on the first sub-shell (251), and another portion of the bonding portion (24) being arranged on the second sub-shell (252).

9. The cooling plate assembly (100) according to any one of claims 2 to 8, wherein: The cooling plate (10) includes a base portion (13), the connecting portion (11) is arranged at one end of the base portion (13), a first flange (14) is formed between the base portion (13) and the connecting portion (11), and the first flange (14) abuts against the side wall of the collector (20).

10. The cooling plate assembly (100) according to any one of claims 2 to 9, wherein: The current collector (20) further includes a main body (28), the bonding portion (24) is provided at one end of the main body (28), and a second flange (29) is formed between the inner wall of the bonding portion (24) and the inner wall of the main body (28).

11. The cooling plate assembly (100) according to any one of claims 2 to 9, wherein: The current collector (20) includes a first current collector (21) and a second current collector (22), wherein the first current collector (21) is bonded to one end of the cooling plate (10), and the second current collector (22) is bonded to the other end of the cooling plate (10); The first current collector (21) is provided with an inlet (261) and an outlet (262), the inlet (261) being provided for access by a liquid inlet pipe, and the outlet (262) being provided for connection to a liquid outlet pipe.

12. The cooling plate assembly (100) according to claim 11, wherein The first current collector (21) includes a first shell (211), the first shell (211) having a first closed end (212) and a first open end (213) arranged opposite to each other, and a partition wall (27) is further provided inside the first shell (211), the partition wall (27) being provided between the inlet (261) and the outlet (262), and the partition wall (27) extending from the first closed end (212) to the first open end (213) and terminating at one side of the bonding portion (24).

13. An assembling method for the cooling plate assembly according to claim 1, the assembling method comprising: Applying a first adhesive (31) and a second adhesive (32) respectively to the first adhesive portion (241) and the second adhesive portion (242) of the first sub-shell (251) of the current collector (20); The first adhesive (31) and the second adhesive (32) are respectively applied to the first adhesive portion (241) and the second adhesive portion (242) of the second sub-shell (252) of the current collector (20); Applying a third adhesive (33) on the first outer side surface (2511) of the first sub-shell (251); Applying the third adhesive (33) to the second outer side surface (2521) of the second sub-shell (252); Bonding the first outer side surface (2511) of the first sub-shell (251) to the cooling plate (10); The second outer side surface (2521) of the second sub-shell (252) is bonded to the cooling plate (10).

14. A battery module, comprising a plurality of cooling plate assemblies (100) according to any one of claims 1 to 12 and a plurality of battery packs, wherein each cooling plate assembly (100) is arranged between adjacent battery packs. 15 . A battery pack comprising a box and a plurality of battery modules arranged inside the box, wherein the battery modules comprise the battery module according to claim 14 .

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