Cooling assembly, battery pack and electric device

Abstract

The utility model provides a kind of cooling assembly, battery pack and electric equipment, the cooling assembly is suitable for cooling battery pack, the battery pack includes the first layer battery and second layer battery being stacked along the height direction of the battery pack, the cooling assembly includes: first cooling piece and second cooling piece, the first cooling piece and the second cooling piece are located between the first layer battery and second layer battery, the first cooling piece is set to cool the first layer battery, and the second cooling piece is set to cool the second layer battery.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a cooling component, a battery pack, and an electrical device. Background Technology

[0002] In related technologies, multi-layer battery packs include a top layer battery, a bottom layer battery, and an intermediate layer battery located between the top layer battery and the bottom layer battery. The intermediate layer battery pack may also include multiple layers. The cooling plate structure of the intermediate layer battery needs to cool the upper and lower layers of batteries simultaneously, which leads to uneven overall temperature of the intermediate layer battery. Utility Model Content

[0003] The embodiments of this utility model provide a cooling component, a battery pack, and an electrical device, which can improve the technical problem of poor cooling effect of intermediate layer batteries.

[0004] In a first aspect, embodiments of the present invention provide a cooling assembly suitable for cooling a battery pack, the battery pack comprising a first layer of batteries and a second layer of batteries stacked along the height direction of the battery pack, the cooling assembly comprising:

[0005] A first cooling element and a second cooling element are located between a first layer of battery and a second layer of battery. The first cooling element is configured to cool the first layer of battery, and the second cooling element is configured to cool the second layer of battery.

[0006] In one embodiment, the first cooling element includes an opposing top plate and a bottom plate, the top plate of the first cooling element being disposed facing the bottom of the first layer of battery, and the second cooling element being connected to the bottom plate of the first cooling element and located on top of the second layer of battery.

[0007] In one embodiment, the battery pack further includes a top battery and a bottom battery, with the first layer battery and the second layer battery located between the top battery and the bottom battery. The top of the top battery is provided with a separate first cooling element, and the bottom of the top battery is provided with the cooling assembly. Alternatively, the bottom of the bottom battery is provided with the cooling assembly, and the bottom of the bottom battery is provided with a separate first cooling element.

[0008] In one embodiment, the thickness of the first cooling element is greater than the thickness of the second cooling element, and / or the structural strength of the first cooling element is greater than the structural strength of the second cooling element.

[0009] In one embodiment, the first cooling component further includes a flow channel cavity located between the top plate and the bottom plate, wherein the flow channel cavity is provided with a plurality of reinforcing parts, and the plurality of reinforcing parts connect the top plate and the bottom plate.

[0010] In one embodiment, the first cooling member further includes opposing first and second side plates, the first and second side plates connecting the top surface and the bottom plate, and the plurality of reinforcing portions including a first reinforcing portion and a second reinforcing portion, the first reinforcing portion being closer to the first or second side plate relative to the second reinforcing portion, and the width of the first reinforcing portion being greater than the width of the second reinforcing portion.

[0011] In one embodiment, the first cooling element has a first inlet and a first outlet, the first inlet being configured for the inflow of cooling medium and the first outlet being configured for the outflow of cooling medium, both the first inlet and the first outlet being located on a first side of the cooling assembly; the second cooling element has a second inlet and a second outlet, the second inlet being configured for the inflow of cooling medium and the second outlet being configured for the outflow of cooling medium, both the second inlet and the second outlet being located on a second side of the cooling assembly, wherein the first side of the first cooling element and the second side of the second cooling element are disposed opposite to each other.

[0012] In one embodiment, the second cooling element includes a plurality of flow channels and at least one manifold, the plurality of flow channels being spaced apart along the width direction of the battery pack and connected to at least one manifold, and the second inlet and the second outlet being disposed on the same manifold.

[0013] In one embodiment, the cooling assembly further includes a connecting pipe, the battery pack includes a first cooling assembly and a second cooling assembly, the first cooling assembly and the second cooling assembly are respectively located at the top and bottom of the same layer of battery, and the connecting pipe connects the second cooling element of the first cooling assembly and the first cooling element of the second cooling assembly.

[0014] In one embodiment, the base plate of the first cooling element is provided with at least one pressure relief channel for the second layer of battery to release pressure.

[0015] In one embodiment, the second cooling element includes a plurality of flow channels spaced apart along the width direction of the battery pack, each of the pressure relief channels being located between two adjacent flow channels.

[0016] In one embodiment, each battery layer includes multiple cells arranged side by side along the length of the battery pack. Each cell is provided with an explosion-proof valve on its top. The projections of multiple explosion-proof valves of multiple cells in the same row onto the first cooling element are all located within the same pressure relief channel.

[0017] Secondly, embodiments of the present invention provide a battery pack, the battery pack comprising: multiple layers of batteries stacked along the height direction of the battery pack; and a plurality of cooling components, each of the cooling components being located between two adjacent battery layers, the cooling components including the cooling components described above.

[0018] Thirdly, embodiments of the present invention provide an electrical device, which includes the cooling assembly described above, or the battery pack described above.

[0019] The beneficial effects of the embodiments of this utility model are as follows:

[0020] In an embodiment of this utility model, a cooling assembly is provided between two adjacent battery layers in the middle layer. The cooling assembly includes a first cooling element and a second cooling element, which are located between the two adjacent battery layers. The first cooling element is configured to cool the first battery layer, and the second cooling element is configured to cool the second battery layer. This allows the first and second batteries in the middle layer to be cooled by the first and second cooling elements, respectively, thereby effectively increasing the heat dissipation area, which is beneficial for heat dissipation of the battery pack and improves the temperature uniformity of the battery pack. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a perspective view of the battery pack provided in an embodiment of the present invention;

[0023] Figure 2 This is a three-dimensional schematic diagram of the battery cell of the battery pack provided in an embodiment of this utility model;

[0024] Figure 3 This is a three-dimensional schematic diagram of the cooling assembly of the battery pack provided in an embodiment of the present invention;

[0025] Figure 4 This is a three-dimensional schematic diagram of the cooling assembly of the battery pack provided in an embodiment of the present invention connected to the connecting pipe;

[0026] Figure 5 This is a perspective view of the first cooling component of the cooling assembly of the battery pack provided in an embodiment of the present invention;

[0027] Figure 6 This is a bottom view of the first cooling component of the cooling assembly of the battery pack provided in an embodiment of the present invention;

[0028] Figure 7 This is a perspective view of the second cooling component of the cooling assembly of the battery pack provided in an embodiment of the present invention.

[0029] Icon labels:

[0030] 100. Battery pack;

[0031] 11. First layer battery; 12. Second layer battery; 13. Top layer battery; 14. Bottom layer battery; 15. Battery cell; 16. Explosion-proof valve;

[0032] 1. Cooling assembly; 101. First cooling assembly; 102. Second cooling assembly;

[0033] 2. First cooling component; 211. Top plate; 212. Bottom plate; 213. First side plate; 214. Second side plate; 22. Flow channel cavity; 23. Reinforcing part; 231. First reinforcing part; 232. Second reinforcing part; 24. Pressure relief channel; 25. First inlet; 26. First outlet;

[0034] 3. Second cooling component; 31. Manifold; 311. First manifold; 312. Second manifold; 313. Third manifold; 32. Flow channel pipe; 33. Second inlet; 34. Second outlet; 35. Fixing component;

[0035] 41. Main inlet pipe; 42. Main outlet pipe; 43. First connecting pipe; 44. Second connecting pipe; 45. Third connecting pipe; 46. Fourth connecting pipe; Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0037] In related technologies, multi-layer battery packs include a top battery pack, a bottom battery pack, and an intermediate battery pack located between the top and bottom battery packs. The intermediate battery pack may also include multiple layers. The cooling plate structure of the intermediate battery pack is basically the same as that of the top or bottom battery pack, which can lead to poor heat dissipation of the intermediate battery pack and consequently uneven overall temperature of the battery pack.

[0038] Embodiments of this application provide a battery pack 100, which includes a housing and multiple layers of batteries located within the housing. The battery pack 100 can be either an energy storage battery pack or a power battery pack.

[0039] The multi-layered batteries are stacked along the height direction of the battery pack 100, such as... Figure 1 As shown, the multi-layer battery includes a top layer battery 13 and a bottom layer battery 14, and an intermediate layer battery located between the top layer battery 13 and the bottom layer battery 14. The intermediate layer battery includes an adjacent first layer battery 11 and a second layer battery 12. In the embodiments of this application, the number of layers in the multi-layer battery can be 3, 4, 5, or 4.5 layers; no specific limitation is made in the embodiments of this application. Each layer battery includes multiple groups of batteries arranged along the width direction of the battery pack, and each group of batteries includes multiple cells arranged along the length direction of the battery pack. Figure 1 The z-direction is the height direction of the battery pack 100, the x-direction is the length direction of the battery pack 100, and the y-direction is the width direction of the battery pack 100.

[0040] In some embodiments, cooling elements are provided at the top and bottom of each battery layer to provide cooling to the top and bottom of each battery layer.

[0041] In some embodiments, such as Figure 1 , Figure 3 and Figure 5 As shown, the battery pack 100 includes a cooling assembly 1, which includes a first cooling element 2 and a second cooling element 3. The first cooling element 2 and the second cooling element 3 are located between a first layer of batteries 11 and a second layer of batteries 12. The first cooling element 2 includes a top plate 211 and a bottom plate 212 facing each other. The top plate 211 of the first cooling element 2 is disposed towards the bottom of the first layer of batteries 11 to cool the first layer of batteries 11. The second cooling element 3 is located on top of the second layer of batteries 12 and is configured to cool the second layer of batteries 12. The second cooling element 3 is connected to the bottom plate 212 of the first cooling element 2.

[0042] By setting a cooling component 1 between two adjacent battery layers in the middle layer, the cooling component 1 includes a first cooling element 2 and a second cooling element 3, wherein the first cooling element 2 is configured to cool the first battery layer 11 and the second cooling element 3 is configured to cool the second battery layer 12, so that the first battery layer 11 and the second battery layer 12 located in the middle layer are cooled by the first cooling element 2 and the second cooling element 3 respectively, thereby effectively increasing the heat dissipation area, which is beneficial to the heat dissipation of the battery pack and improving the temperature uniformity of the battery pack.

[0043] In some embodiments, the first cooling element 2 and the second cooling element 3 are stacked. Specifically, the first cooling element 2 includes a top plate 211 and a bottom plate 212 facing each other. The top plate 211 of the first cooling element 2 faces the bottom of the first battery layer 11, and the second cooling element 3 is located on top of the second battery layer 12 and connected to the bottom plate 212 of the first cooling element 2. By stacking the first cooling element 2 and the second cooling element 3, the first cooling element 2 corresponds to the bottom of the first battery layer 11 and can support the first battery layer 11, while the second cooling element 3 corresponds to the top of the second battery layer 12. It is understood that there is a first cooling element 2 of another cooling assembly 1 at the bottom of the second battery layer 1, so that the top and bottom of each battery layer in the intermediate layer have separate cooling structures for cooling, thereby effectively increasing the heat dissipation area. The connection between the first cooling element 2 and the second cooling element 3 can be welding, so that the cooling assembly 1 is constructed as a whole for easy installation and to provide support for the first battery layer 11.

[0044] In some embodiments, a separate first cooling element 2 is provided at the top of the top battery 13 and the bottom of the bottom battery 14 to cool the top of the top battery 13 and the bottom of the bottom battery 14. Specifically, a separate first cooling element 2 is provided at the top of the top battery 13, and a cooling assembly 1 is provided at the bottom of the top battery 13. The first cooling element 2 of the cooling assembly 1 corresponding to the top battery 13 provides cooling to the bottom of the top battery 13. Another cooling assembly 1 is provided at the top of the bottom battery 14, and a separate first cooling element 2 is provided at the bottom of the bottom battery 14. The second cooling element 3 of the cooling assembly 1 corresponding to the bottom battery 14 provides cooling to the top of the bottom battery 14, and the bottom of the bottom battery 14 is cooled by a separate first cooling element 2, so that the top and bottom of each battery layer in the battery pack have separate cooling structures for cooling.

[0045] In some embodiments, the first cooling element 2 is configured to support the first layer of battery 11, the thickness of the first cooling element 2 is greater than the thickness of the second cooling element 3, and / or the structural strength of the first cooling element 2 is greater than the structural strength of the second cooling element 3, so that the first cooling element 2 can provide stable support for the first layer of battery 11, reducing the need for additional support structures inside the battery pack, thereby simplifying the structure of the battery pack.

[0046] In some embodiments, the first cooling component 2 includes an aluminum extruded cooling plate, and the second cooling component 3 includes a harmonica-shaped cooling plate. The aluminum extruded cooling plate is an integrated cooling plate formed directly by an aluminum extrusion process, while the harmonica-shaped cooling plate is formed by extruding flat tubular channels from aluminum profiles and then brazing the two ends of the channels to a manifold. The aluminum extruded cooling plate, being an integral structure, has good load-bearing capacity and can directly support the first layer of batteries 11. The cooling assembly is formed by welding the first cooling component 2 and the second cooling component 3 after they have been formed separately.

[0047] In some embodiments, such as Figure 5 As shown, the first cooling component 2 includes a top plate 211, a bottom plate 212, and a first side plate 213 and a second side plate 214. The first side plate 213 and the second side plate 214 are connected between the top plate 211 and the bottom plate 212. The top plate 211, the bottom plate 212, the first side plate 213, and the second side plate 214 form a flow channel cavity 22. An S-shaped flow channel is provided in the flow channel cavity 22 to improve the uniformity of the cooling effect of the first cooling component 2. A plurality of reinforcing parts 23 are also provided in the flow channel cavity 22, and the plurality of reinforcing parts 23 connect the top plate 211 and the bottom plate 212 to improve the structural strength of the first cooling component 2.

[0048] In some embodiments, continue to refer to Figure 5 The multiple reinforcing parts 23 include a first reinforcing part 231 and a second reinforcing part 232. The first reinforcing part 231 is closer to the first side plate 213 or the second side plate 214 than the second reinforcing part 232. The width of the first reinforcing part 231 is greater than the width of the second reinforcing part 232, so that the structural strength of the first reinforcing part 231 closer to the first side plate 213 and the second side plate 214 is greater than the structural strength of the second reinforcing part 232. This improves the structural strength of the first cooling element 2 and optimizes the flow channel structure inside the flow channel cavity 22.

[0049] In some embodiments, such as Figure 4 and Figure 7As shown, the second cooling component 3 includes a plurality of flow channels 32 and at least one manifold 31. The plurality of flow channels 32 are spaced apart along the width direction of the battery pack 100 and connected to the at least one manifold 31. In a specific implementation, the at least one manifold 31 includes a first manifold 311 and a second manifold 312, wherein both the first manifold 311 and the second manifold 312 are connected to the same side of the plurality of flow channels 32. The first manifold 311 and the second manifold 312 are staggered, such that the flow channel 32 connected to the second manifold 312 is bent downward relative to the flow channel 32 connected to the first manifold 311. The at least one manifold 31 also includes a third manifold 313 and a fourth manifold 314, both of which are connected to the other side of the plurality of flow channels 32, wherein the third manifold 313 and the fourth manifold 314 are disconnected. The multiple flow channels 32 include multiple first flow channels 321 and multiple second flow channels 322. A portion of the first flow channels 321 are connected to the first manifold 311 and the third manifold 313, and another portion of the first flow channels 322 are connected to the first manifold 311 and the fourth manifold 314. A portion of the second flow channels 322 are connected to the second manifold 312 and the third manifold 313, and another portion of the second flow channels 322 are connected to the second manifold 312 and the fourth manifold 314.

[0050] The first manifold 311 is provided with a second inlet 33 and a second outlet 34. The cooling medium flows into the first manifold 311 from the second inlet 33 and flows through the first flow channel 321 and the third manifold 313 into the second flow channel 322. It then flows through the second flow channel 322 to the second manifold 312, through the second manifold 312 and another second flow channel 322 to the fourth manifold 314. Finally, it flows through the fourth manifold 314 into another first flow channel 321 and then into the second outlet 34 of the first manifold 311. This allows the cooling medium to form an S-shaped flow channel structure in the multiple flow channel 32 and at least one manifold 31 to improve the temperature uniformity of the second cooling component 3.

[0051] In some embodiments, the second cooling component 3 further includes a plurality of fixing members 35, each fixing member 35 extending along the width direction of the battery pack and fixedly connected to a plurality of flow channel pipes 32 to fix the plurality of flow channel pipes 32.

[0052] In some embodiments, such as Figure 3 and Figure 4As shown, a first inlet 25 and a first outlet 26 are provided on the first side of the first cooling component 2. The first inlet 25 is configured to allow the cooling medium to flow into the flow channel cavity 22, and the first outlet 26 is configured to allow the cooling medium to flow out of the flow channel cavity 22. A second inlet 33 and a second outlet 34 are provided on the manifold 31 on the second side of the second cooling component 3. The second inlet 33 is configured to allow the cooling medium to flow into the first manifold 311, and the second outlet 34 is configured to allow the cooling medium to flow out of the first manifold 311. The first side of the first cooling component 2 and the second side of the second cooling component 3 are arranged opposite to each other, and the cooling medium flowing into the first inlet 25 of the first cooling component 2 can connect to the second inlet 33 through the flow channel cavity 22.

[0053] In some embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, the battery pack 100 also includes a main liquid inlet pipe 41 and a main liquid outlet pipe 42 disposed near the first side of the first cooling component 2. The main liquid inlet pipe 41 is connected to the first inlet 25 of the first cooling component 2 of the cooling assembly 1 corresponding to each layer of the battery pack through a plurality of first connecting pipes 43. The main liquid outlet pipe 42 is connected to the first outlet 26 of the first cooling component 2 of the cooling assembly 1 corresponding to each layer of the battery pack through a plurality of second connecting pipes 44.

[0054] In some embodiments, the battery pack 100 further includes a plurality of third connecting pipes 45 and a plurality of fourth connecting pipes 46, both of which are located on the second side of the cooling assembly 1. The battery pack includes a plurality of cooling assemblies 1, each including an adjacent first cooling assembly 101 and a second cooling assembly 102. The first cooling assembly 101 and the second cooling assembly 102 are located at the top and bottom of the same battery layer, respectively. The third connecting pipes 45 and 46 are both connected to the second cooling element 3 of the first cooling assembly 101 and the first cooling element 2 of the second cooling assembly 102, so that the cooling medium of the first cooling element 2 flows into the second cooling element 3 through the third connecting pipe 45, and the cooling medium in the second cooling element 3 flows into the first cooling element 2 through the fourth connecting pipe 46. In a specific embodiment, one end of the third connecting pipe 45 is connected to the second inlet 33 of the second cooling element 3 of the first cooling assembly 101, and the other end of the third connecting pipe 45 is connected to the flow channel cavity 22 of the first cooling element 2 of the second cooling assembly 102. One end of the fourth connecting pipe 46 is connected to the second outlet 34 of the second cooling element 3 of the first cooling assembly 101, and the other end of the fourth connecting pipe 46 is connected to the flow channel cavity 22 of the first cooling element 2 of the second cooling assembly 102, thereby simplifying the connection pipe structure between multiple cooling assemblies 1.

[0055] In some embodiments, such as Figure 5 and Figure 6As shown, the base plate 212 of the first cooling component 2 is provided with at least one pressure relief channel 24. This pressure relief channel 24 is configured to relieve pressure on the second battery layer 12. By providing the pressure relief channel 24 on the base plate 212 of the first cooling component 2, the high-pressure gas ejected from the explosion-proof valve of the second battery layer 12 can directly enter the pressure relief channel 24, thereby achieving rapid pressure relief. In a specific embodiment, the pressure relief channel 24 includes multiple pressure relief grooves provided on the base plate 212 of the first cooling component 2.

[0056] In some embodiments, such as Figure 4 and Figure 6 As shown, the first cooling component 2 has multiple pressure relief channels 24 on its base plate 212, and the second cooling component 3 includes multiple flow channels 32 arranged at intervals along the width direction of the battery pack 100. Each pressure relief channel 24 is located between two adjacent flow channels 32, so that the pressure relief channel 24 and the flow channel 32 are staggered, so that the high-pressure gas ejected from the explosion-proof valve of the second battery 12 can enter the pressure relief channel 24 in a straight line, thereby achieving rapid pressure relief.

[0057] In some embodiments, such as Figure 2 , Figure 4 and Figure 6 As shown, the second-layer battery 12 includes multiple battery packs, each battery pack including multiple cells 15 arranged side-by-side along the length of the battery pack 100. Each cell 15 has an explosion-proof valve 16 on its top. The projections of the multiple explosion-proof valves 16 of multiple cells 15 located in the same row and layer of the same battery pack 15 onto the first cooling element 2 are located within the same pressure relief channel 24, allowing the high-pressure gas ejected from the multiple explosion-proof valves 16 of multiple cells in the same row and layer to enter the corresponding pressure relief channel 24 in a straight line, thereby achieving rapid pressure relief. In a specific embodiment, the second-layer battery 12 includes four cell packs, corresponding to four pressure relief channels on the bottom plate 212 of the first cooling element 2.

[0058] In some embodiments, the length of the pressure relief channel 24 extending along the length direction of the battery pack 100 is less than the length of the base plate 212 of the first cooling member 2.

[0059] In some embodiments, an explosion-proof valve is provided on the casing corresponding to each battery layer. Multiple pressure relief channels 24 on the first cooling element 2 are connected to this explosion-proof valve. The pressure relief path of the battery cell is sequentially: battery cell explosion-proof valve, corresponding pressure relief channel 24 of the first cooling element 2, and corresponding casing explosion-proof valve. Embodiments of this application also provide an electrical device, which can be a vehicle or a power tool. The vehicle can be a pure electric vehicle or a hybrid vehicle. This electrical device includes the battery pack provided in the above embodiments.

[0060] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A cooling assembly (1) adapted to cool a battery pack, the battery pack comprising a first layer of cells (11) and a second layer of cells (12) stacked in a height direction of the battery pack, characterized in that, The cooling assembly (1) includes: A first cooling element (2) and a second cooling element (3) are disposed between the first layer battery (11) and the second layer battery (12). The first cooling element (2) is configured to cool the first layer battery (11), and the second cooling element (3) is configured to cool the second layer battery (12).

2. The cooling assembly (1) according to claim 1, characterized in that, The first cooling element (2) includes a top plate (211) and a bottom plate (212) facing each other. The top plate (211) of the first cooling element (2) is disposed facing the bottom of the first layer battery (11). The second cooling element (3) is connected to the bottom plate (212) of the first cooling element (2) and is located on top of the second layer battery (12).

3. The cooling assembly (1) according to claim 1, characterized in that, The battery pack further includes a top battery (13) and a bottom battery (14), with the first layer battery (11) and the second layer battery (12) located between the top battery (13) and the bottom battery (14). The top of the top battery (13) is provided with a separate first cooling element (2), and the bottom of the top battery (13) is provided with the cooling assembly (1). Alternatively, the top of the bottom battery (14) is provided with the cooling assembly (1), and the bottom of the bottom battery (14) is provided with a separate first cooling element (2).

4. The cooling assembly (1) according to claim 1, characterized in that, The thickness of the first cooling element (2) is greater than the thickness of the second cooling element (3), and / or the structural strength of the first cooling element (2) is greater than the structural strength of the second cooling element (3).

5. The cooling assembly (1) according to claim 2, characterized in that, The first cooling component (2) includes a flow channel cavity (22) located between the top plate (211) and the bottom plate (212), and the flow channel cavity (22) is provided with a plurality of reinforcing parts (23), which connect the top plate (211) and the bottom plate (212).

6. The cooling assembly (1) according to claim 5, characterized in that, The first cooling component (2) further includes a first side plate (213) and a second side plate (214) opposite each other, the first side plate (213) and the second side plate (214) connecting the top plate (211) and the bottom plate (212), and the plurality of reinforcing parts (23) including a first reinforcing part (231) and a second reinforcing part (232), the first reinforcing part (231) being closer to the first side plate (213) or the second side plate (214) relative to the second reinforcing part (232), and the width of the first reinforcing part (231) being greater than the width of the second reinforcing part (232).

7. The cooling assembly (1) according to any one of claims 1 to 6, characterized in that, The first cooling component (2) is provided with a first inlet (25) and a first outlet (26). The first inlet (25) is configured to allow the cooling medium to flow in, and the first outlet (26) is configured to allow the cooling medium to flow out. The first inlet (25) and the first outlet (26) are both located on the first side of the cooling assembly (1). The second cooling component (3) is provided with a second inlet (33) and a second outlet (34). The second inlet (33) is configured to allow the cooling medium to flow in, and the second outlet (34) is configured to allow the cooling medium to flow out. The second inlet (33) and the second outlet (34) are both located on the second side of the cooling assembly (1), wherein the first side of the first cooling component (2) and the second side of the second cooling component (3) are arranged opposite to each other.

8. The cooling assembly (1) according to claim 7, characterized in that, The second cooling component (3) includes a plurality of flow channels (32) and at least one manifold (31). The plurality of flow channels (32) are spaced apart along the width direction of the battery pack and connected to at least one manifold (31). The second inlet (33) and the second outlet (34) are located in the same manifold (31).

9. The cooling assembly (1) according to any one of claims 1 to 6, characterized in that, The cooling assembly (1) further includes connecting pipes (45, 46). The battery pack includes a first cooling assembly (101) and a second cooling assembly (102). The first cooling assembly (101) and the second cooling assembly (102) are located at the top and bottom of the same battery layer, respectively. The connecting pipes (45, 46) connect the second cooling element (3) of the first cooling assembly (101) and the first cooling element (2) of the second cooling assembly (102).

10. The cooling assembly (1) according to claim 2, characterized in that, The base plate (212) of the first cooling component (2) is provided with at least one pressure relief channel (24), which is used to relieve pressure on the second layer battery (12).

11. The cooling assembly (1) according to claim 10, characterized in that, The second cooling component (3) includes a plurality of flow channels (32) spaced apart along the width direction of the battery pack, each of the pressure relief channels (24) being located between two adjacent flow channels (32).

12. The cooling assembly (1) according to claim 11, characterized in that, Each battery layer includes multiple cells (15) arranged side by side along the length of the battery pack. Each cell (15) is provided with an explosion-proof valve (16) on its top. The projections of the multiple explosion-proof valves (16) of the multiple cells (15) in the same row on the first cooling element (2) are all located in the same pressure relief channel (24).

13. A battery pack, characterized in that, The battery pack includes: Multi-layer battery, wherein the multi-layer battery is stacked along the height direction of the battery pack; A plurality of cooling components (1), each of the cooling components (1) being located between two adjacent battery layers, the cooling components (1) comprising the cooling components (1) as described in any one of claims 1 to 12.

14. An electrical appliance, characterized in that, The electrical equipment includes a cooling assembly (1) as described in any one of claims 1 to 12, or includes a battery pack as described in claim 13.

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