Cooling assembly, battery pack and electric equipment

Abstract

The utility model relates to a cooling assembly, a battery pack and electric equipment, and relates to the technical field of batteries, the cooling assembly comprises a cooling body, a heat conductor and a confluence piece, and the cooling body extends along a first direction; the heat conductors are arranged on the two sides of the cooling body in the first direction. The confluence pieces are arranged in the first direction and formed on the two sides of the cooling body. The confluence pieces are connected with the side, away from the cooling body, of the heat conductor. And the cooling body, the heat conductor and the confluence piece are integrated into a whole. According to the cooling assembly, the battery pack and the electric equipment, the space occupation amount of the cooling body, the heat conductor and the confluence piece in the height direction of the battery pack can be reduced, so that the space utilization rate in the battery box is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a cooling assembly, a battery pack and an electrical device. Background Art

[0002] In the battery structure, the busbar is generally used to transfer current between two adjacent battery cells. In the process of transferring current, the busbar generates heat, which causes the operating temperature to rise. In the related art, the busbar is generally covered with a cooler, and an insulating heat conductor is covered between the cooler and the busbar, and the cooler can reduce the temperature of the busbar. However, in the related art, the cooler, the heat conductor and the busbar adopt a stacked distribution structure, resulting in a large amount of space occupied by the three in the height direction of the battery pack, and a low utilization rate of the space in the battery box. Utility Model Content

[0003] In order to solve the above technical problems, the embodiments of the present application provide a cooling assembly, a battery pack and an electrical device, which can reduce the space occupied by the cooler, the heat conductor and the busbar in the height direction of the battery pack, thereby improving the space utilization in the battery box.

[0004] In a first aspect, a cooling assembly is provided, comprising:

[0005] A cooling body extending along a first direction;

[0006] A heat conductor, disposed on both sides of the cooling body along the first direction;

[0007] A current collector is arranged along a first direction and formed on both sides of the cooling body, and the current collector is connected to a side of the heat conductor that is away from the cooling body;

[0008] Wherein, the cooling body, the heat conductor and the current collector are integrated into one body.

[0009] According to a first aspect of the present application, the cooling body comprises a first cold plate and a second cold plate connected in a stacked manner, wherein the second cold plate is recessed toward a side of the first cold plate to form a cooling channel between the first cold plate and the second cold plate;

[0010] The heat conductor is connected to at least a side surface of one of the first cold plate and the second cold plate.

[0011] According to the first aspect of the present application, the cooling body includes on the projection plane intermediate sections arranged in sequence along the first direction and extending perpendicular to the first direction, and a U-shaped connecting section connecting two adjacent intermediate sections, and multiple intermediate sections and multiple connecting sections are connected in sequence so that the cooling flow channels in each of the intermediate sections and the connecting sections meander and flow in the first direction.

[0012] According to the first aspect of the present application, the heat conductor includes a first arc-shaped edge and a second arc-shaped edge that are oppositely arranged, and the first arc-shaped edge is adapted to the side surface of the connecting section;

[0013] A third arc-shaped edge is provided on one side of the current collector close to the heat conductor, and the third arc-shaped edge is adapted to the second arc-shaped edge;

[0014] Wherein, the symmetry axes of the first arc-shaped edge, the second arc-shaped edge, the third arc-shaped edge, the symmetry axis of the heat conductor, and the symmetry axis of the current collector are coaxial and are all perpendicular to the first direction.

[0015] According to the first aspect of the present application, abutting portions protruding from the second cold plate are provided on both side edges of the first cold plate, so that the first cold plate is mounted on the heat conductor through the abutting portions, the side surface of the heat conductor is connected to the side surface of the second cold plate, and the top surface of the heat conductor is connected to the bottom surface of the abutting portion.

[0016] According to the first aspect of the present application, the heat conductor includes a first surface parallel to the first direction, the current collector includes a second surface parallel to the first direction, and the first surface and the second surface are coplanar.

[0017] According to the first aspect of the present application, the first surface at least includes the bottom surface of the heat conductor, and the second surface at least includes the bottom surface of the current collector.

[0018] In a second aspect, a battery pack is further provided, including:

[0019] A battery box;

[0020] A plurality of battery cells are arranged in the battery box, and the battery cells include a top cover and a pole post arranged on the top cover;

[0021] The cooling assembly as described in the previous embodiment is arranged on the top cover, and the pole posts of two adjacent battery cells are connected to the bottom surface of the current collector.

[0022] According to the second aspect of the present application, the pole posts of two adjacent battery cells are further connected to the bottom surface of the heat conductor; the two pole posts of the same battery cell are further connected to the bottom surfaces of two heat conductors.

[0023] In a third aspect, an electrical device is further provided, including the battery pack as described in the previous embodiment.

[0024] The cooling component, battery pack, and electrical device provided by the embodiments of the present application include a cooling body, a heat conducting body, and a bus bar. The cooling body extends in a first direction. The heat conducting bodies are disposed on both sides of the cooling body along the first direction. The bus bars are arranged along the first direction and formed on both sides of the cooling body. The bus bars are connected to the side of the heat conducting body facing away from the cooling body. The cooling body, the heat conducting body, and the bus bar are integrated. In this way, the cooling body, the heat conducting body, and the bus bar are distributed in a direction perpendicular to the first direction. Compared with the solution where the cooling body, the heat conducting body, and the bus bar are stacked along the height direction of the battery pack, the space in the height direction of the battery pack can be effectively saved, and the space utilization rate can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] By describing the embodiments of the present application in more detail in conjunction with the drawings, the above and other objects, features, and advantages of the present application will become more obvious. The drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. They are used to explain the present application together with the embodiments of the present application and do not constitute a limitation to the present application. In the drawings, the same reference numerals generally represent the same components or steps.

[0026] Figure 1 It is a schematic structural diagram of a battery pack provided by an exemplary embodiment of the present application from a first perspective.

[0027] Figure 2 It is a schematic structural diagram of a battery pack provided by an exemplary embodiment of the present application from a second perspective.

[0028] Figure 3 It is a schematic cross-sectional view of a battery pack provided by an exemplary embodiment of the present application.

[0029] Figure 4 It is a schematic structural diagram of a cooling component provided by an exemplary embodiment of the present application.

[0030] Figure 5 It is a schematic structural diagram of a cooling body provided by an exemplary embodiment of the present application.

[0031] Figure 6 It is a schematic structural diagram of a heat conducting body provided by an exemplary embodiment of the present application.

[0032] Figure 7 It is a schematic structural diagram of a bus bar provided by an exemplary embodiment of the present application.

[0033] Reference Numerals: 100 - Cooling Assembly; 110 - Cooling Body; 112 - First Cold Plate; 1121 - Abutted Portion; 113 - Second Cold Plate; 114 - Cooling Flow Channel; 115 - Connection Segment; 116 - Intermediate Segment; 120 - Heat Conducting Body; 121 - First Surface; 122 - First Arc Edge; 123 - Second Arc Edge; 130 - Confluence Member; 131 - Second Surface; 132 - Third Arc Edge; 200 - Battery Pack; 210 - Battery Box; 220 - Battery Cell; 221 - Top Cover; 222 - Terminal Post. Detailed Embodiment

[0034] Next, exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. It should be understood that the present application is not limited by the exemplary embodiments described herein.

[0035] Figure 1 It is a schematic structural diagram of a battery pack provided by an exemplary embodiment of the present application from a first perspective. Figure 2 It is a schematic structural diagram of a battery pack provided by an exemplary embodiment of the present application from a second perspective. Figure 3 It is a cross-sectional schematic diagram of a battery pack provided by an exemplary embodiment of the present application. As Figures 1 to 3 shown, the battery pack 200 provided by the embodiment of the present application may include a battery box 210, a plurality of battery cells 220, and a cooling assembly 100. The plurality of battery cells 220 may be disposed in the battery box 210. When the plurality of battery cells 220 are working, heat is generated and the temperature rises. The cooling assembly 100 can cool the battery cells 220 to ensure that the working temperature of the plurality of battery cells 220 is within a normal range.

[0036] Specifically, the battery cell 220 includes a top cover 221 and a terminal post 222. The terminal post 222 is disposed on the top cover 221. The cooling assembly 100 is disposed on the top cover 221. The cooling assembly 100 is thermally connected to the terminal post 222. The heat generated by the battery cell 220 is transferred to the cooling assembly 100 through the top cover 221 and the terminal post 222. The cooling assembly 100 absorbs the heat to achieve the purpose of reducing the temperature of the terminal post 222.

[0037] As Figures 1 to 3 shown, the cooling assembly 100 may include a cooling body 110. The cooling body 110 extends along a first direction ( Figure 1 and Figure 2 the directions indicated by the arrows A and B in

[0038] In one embodiment, the cooling body 110 may extend linearly along the first direction.

[0039] In one embodiment, the cooling body 110 can extend in a serpentine manner along the first direction. In this way, the cooling body 110 can cover more pole posts 222, thereby cooling more pole posts 222.

[0040] As Figures 1 to 3 shown, the cooling assembly 100 can further include a heat conducting body 120 and a bus bar 130. The heat conducting body 120 is disposed on both sides of the cooling body 110 along the first direction. The bus bars 130 are arranged along the first direction and formed on both sides of the cooling body 110. The bus bars 130 are connected to the side of the heat conducting body 120 facing away from the cooling body 110.

[0041] Specifically, the pole posts 222 of two adjacent battery cells 220 are connected to the bottom surface of the bus bar 130. During the operation of the battery cell 220, the bus bar 130 transfers current between the pole posts 222 of two adjacent battery cells 220. The bus bar 130 generates heat, and the temperature of the bus bar 130 is often higher than that of the battery cell 220. The heat conducting body 120 transfers the heat generated by the bus bar 130 to the cooling body 110, and the cooling body 110 absorbs the heat, realizing the function of cooling the bus bar 130 and the pole posts 222, thereby avoiding the situation of overheating of the bus bar 130 and the pole posts 222.

[0042] It should be noted that, on the one hand, the heat conducting body 120 can transfer the heat of the bus bar 130 to the cooling body 110, playing a heat conducting role; on the other hand, the heat conducting body 120 is made of an insulating material, and the heat conducting body 120 can prevent the bus bar 130 from directly contacting the cooling body 110, thereby avoiding the occurrence of a short circuit.

[0043] It should be noted that since both the heat conducting body 120 and the bus bar 130 are disposed on both sides of the cooling body 110 along the first direction, the bus bar 130 is connected to the side of the heat conducting body 120 facing away from the cooling body 110, and the cooling body 110, the heat conducting body 120, and the bus bar 130 are integrated into one body. In this way, compared with the scheme in which the cooling body 110, the heat conducting body 120, and the bus bar 130 are stacked along the height direction of the battery pack 200 ( Figure 1 and Figure 3 the directions indicated by the arrows C and D in

[0044] In one embodiment, the heat conductor 120 is connected to the busbar 130, and the poles 222 of two adjacent battery cells 220 are also connected to the bottom surface of the heat conductor 120. In this way, the heat conductor 120 can be thermally connected to both the busbar 130 and the poles 222, respectively, and the cooling body 110 can cool both the busbar 130 and the poles 222 at the same time, thereby improving the cooling efficiency. Figure 3 As shown, the two poles 222 of the same battery cell 220 are also connected to the bottom surfaces of the two heat conductors 120 , and the two heat conductors 120 can be thermally connected to the busbars 130 and poles 222 on both sides respectively, further improving the cooling efficiency of the same battery cell 220 .

[0045] In one embodiment, the cooling body 110, the heat conductor 120 and the current collector 130 can be formed by an integral molding method (such as injection molding, pressing and curing, etc.), or can be integrated into one by welding, bonding, etc., to simplify the structure and facilitate installation.

[0046] Figure 4 A schematic diagram of the structure of a cooling assembly provided by an exemplary embodiment of the present application. Figures 1 to 4 As shown, the cooling body 110 may include a first cold plate 112 and a second cold plate 113 which are stacked and connected. The second cold plate 113 is recessed toward one side of the first cold plate 112 to form a cooling channel 114 between the first cold plate 112 and the second cold plate 113. The cooling channel 114 contains flowing coolant, which can take away the heat transferred by the heat conductor 120 and cool the bus 130 and the pole 222.

[0047] It should be noted that the outer wall of the cooling channel 114 on one side away from the first cold plate 112 is relatively protruding to form the lower surface of the second cold plate 113, so that the contact area with the air can be increased and it can be used as a heat dissipation wall, thereby improving the heat dissipation efficiency. The protruding cooling channel 114 faces the top cover 221 of the battery cell 220 and is accommodated in the space where the two poles 222 protrude from the top cover 221, saving space.

[0048] It should be noted that the first cold plate 112 is directly connected to the second cold plate 113 , and the heat conductor 120 is connected to a side surface of at least one of the first cold plate 112 and the second cold plate 113 .

[0049] In one embodiment, the heat conductor 120 can be connected to the side surface of one of the first cold plate 112 and the second cold plate 113. After the heat of the heat conductor 120 is transferred to the first cold plate 112 and the second cold plate 113, since the heat transfer rate of the solid is better than that of the liquid, the heat will quickly spread to the protruding lower surface of the second cold plate 113. In this way, the contact area between the protruding lower surface and the coolant in the cooling channel 114 is relatively large. When the heat conductor 120 is in contact with the second cold plate 113, the heat exchange efficiency can be effectively improved, and the heat exchange effect is better.

[0050] In one embodiment, the heat conductor 120 can be connected to the side surfaces of both the first cold plate 112 and the second cold plate 113, which can further improve the heat dissipation efficiency.

[0051] As Figure 4 shown, the two side edges of the first cold plate 112 are provided with abutting portions 1121 protruding from the second cold plate 113. The abutting portions 1121 can be erected on the heat conductor 120. In this way, the heat conductor 120 can support the cooling body 110, and the connection stability between the cooling body 110 and the heat conductor 120 can be improved, ensuring that heat transfer can be stably achieved.

[0052] As Figure 4 shown, the side surface of the heat conductor 120 is connected to the side surface of the second cold plate 113, and the top surface of the heat conductor 120 is connected to the bottom surface of the abutting portion 1121. In this way, the contact area between the heat conductor 120 and the cooling body 110 can be increased, and the heat transfer efficiency can be improved.

[0053] In one embodiment, the two side edges of the second cold plate 113 can be provided with abutting portions 1121 protruding from the first cold plate 112. The heat conductor 120 is erected on the abutting portions 1121. The side surface of the heat conductor 120 is connected to the side surface of the first cold plate 112, and the bottom surface of the heat conductor 120 is connected to the top surface of the abutting portion 1121. At this time, the heat conductor 120 is arranged above the second cold plate 113, and the contact area between the heat conductor 120 and the first cold plate 112 and the second cold plate 113 can also be increased without occupying space, improving the heat transfer efficiency.

[0054] As Figure 4 shown, the heat conductor 120 includes a first surface 121 parallel to the first direction, and the current collector 130 includes a second surface 131 parallel to the first direction. The first surface 121 and the second surface 131 are coplanar. In this way, the space occupied by the heat conductor 120 and the current collector 130 in the height direction of the battery pack 200 can be reduced, and the space utilization rate can be improved.

[0055] It should be noted that the first surface 121 at least includes the bottom surface of the heat conductor 120, and the second surface 131 at least includes the bottom surface of the bus bar 130. Specifically, first, when the first surface 121 includes the bottom surface of the heat conductor 120 and the second surface 131 includes the bottom surface of the bus bar 130, the coplanarity of the first surface 121 and the second surface 131 can be understood as the coplanarity of the bottom surface of the heat conductor 120 and the bottom surface of the bus bar 130; second, when the first surface 121 includes the top surface of the heat conductor 120 and the second surface 131 includes the top surface of the bus bar 130, the coplanarity of the first surface 121 and the second surface 131 can be understood as the coplanarity of the top surface of the heat conductor 120 and the top surface of the bus bar 130; third, when the first surface 121 includes the top surface and the bottom surface of the heat conductor 120 and the second surface 131 includes the top surface and the bottom surface of the bus bar 130, the coplanarity of the first surface 121 and the second surface 131 can be understood as the coplanarity of the top surface of the heat conductor 120 and the top surface of the bus bar 130, and the coplanarity of the bottom surface of the heat conductor 120 and the bottom surface of the bus bar 130. By the coplanar arrangement, not only can the space utilization rate be improved, but also the heat transfer effect can be improved.

[0056] Figure 5 The figure is a schematic structural diagram of a cooling body provided by an exemplary embodiment of the present application. As Figure 4 and Figure 5 shown, the cooling body 110 includes an intermediate section 116 arranged in sequence along a first direction on the projection plane. The length direction of the intermediate section 116 is perpendicular to the first direction. The cooling body 110 further includes a U-shaped connecting section 115 for connecting two adjacent intermediate sections 116. The plurality of intermediate sections 116 and the plurality of connecting sections 115 are connected in sequence, so that the cooling channels 114 in each intermediate section 116 and the connecting section 115 can flow in a meandering manner in the first direction.

[0057] It should be understood that the meandering flow of the cooling body 110 in the first direction can expand the flow range of the cooling body 110, so that the cooling body 110 cools a larger number of bus bars 130 and terminal posts 222, effectively improving the cooling efficiency. Moreover, when the battery cell 220 expands along the first direction during operation, the meandering cooling body 110 can provide an appropriate buffer space to avoid the deformation and leakage of the cooling body 110 caused by the expansion of the battery cell 220. At the same time, the cooling body 110 is thermally connected to the terminal post and the bus bar 130 through the heat conductor 120. During the use of the battery cell 220, there will be vibrations, collisions, etc. The cooling body 110, the terminal post, and the bus bar 130 are all made of metal materials, while the heat conductor 120 is a colloid, which can buffer between the cooling body 110 and the terminal post and the bus bar 130 through the heat conductor 120 to avoid damage and leakage of the cooling body 110.

[0058] It should be noted that the "projection plane" involved in the embodiments of the present application can be understood as the top surface or the bottom surface of the battery pack 200 in the height direction ( Figure 1 and Figure 3 the directions indicated by the arrows C and D in the figure), or the plane parallel to the top surface or the bottom surface of the battery pack 200 (such as the aforementioned first surface 121 or the second surface 131).

[0059] Figure 6 FIG. is a schematic structural diagram of a heat conductor provided by an exemplary embodiment of the present application. Figure 7 FIG. is a schematic structural diagram of a bus bar provided by an exemplary embodiment of the present application. As Figure 6 and Figure 7 shown, the heat conductor 120 includes a first arc-shaped edge 122 and a second arc-shaped edge 123 which are oppositely arranged. The first arc-shaped edge 122 is adapted to the side surface of the connecting section 115. A third arc-shaped edge 132 is provided on one side of the bus bar 130 close to the heat conductor 120, and the third arc-shaped edge 132 is adapted to the second arc-shaped edge 123. In this way, it can be ensured that the heat conductor 120 is tightly attached to the connecting section 115, and the heat conductor 120 is tightly attached to the bus bar 130, improving the structural stability among the heat conductor 120, the cooling body 110 and the bus bar 130, and preventing separation from each other. At the same time, through the arc-shaped edge, the contact area can be enlarged, and the heat transfer efficiency can be effectively improved, thereby improving the cooling efficiency of the bus bar 130 and the pole 222.

[0060] It should be noted that the symmetry axes of the first arc-shaped edge 122, the symmetry axis of the second arc-shaped edge 123, the symmetry axis of the third arc-shaped edge 132, the symmetry axis of the heat conductor 120 and the symmetry axis of the bus bar 130 are coaxial and perpendicular to the first direction. In this way, heat can be evenly distributed in different parts of the first arc-shaped edge 122, the second arc-shaped edge 123 and the third arc-shaped edge 132 during the process of passing through the first arc-shaped edge 122, the second arc-shaped edge 123 and the third arc-shaped edge 132, ensuring uniform cooling of two adjacent poles 222 and two adjacent bus bars 130, ensuring the temperature uniformity of multiple battery cells 220, and preventing the overall performance of the battery pack from being affected by uneven temperature.

[0061] The embodiments of the present application further provide an electrical device, including the battery pack 200 as described in the previous embodiments, and having all the functions of the battery pack 200. The beneficial effects thereof can refer to the beneficial effects of the aforementioned battery pack 200.

[0062] In one embodiment, the electrical device may include vehicles, mobile phones, portable devices, laptop computers, ships, spacecrafts, electric toys, electric tools, energy storage devices, amusement devices, elevators and lifting devices, etc.

[0063] The basic principles of the present application have been described above in connection with specific embodiments. However, it should be noted that the advantages, benefits, effects, etc. mentioned in the present application are merely examples and not limitations. It cannot be considered that these advantages, benefits, effects, etc. are essential for each embodiment of the present application. Additionally, the specific details disclosed above are for illustrative and easy-to-understand purposes only, and not limitations. These details do not limit the present application to necessarily implementing with the above specific details.

[0064] The block diagrams of the devices, apparatuses, equipment, and systems involved in the present application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open-ended terms, meaning "including but not limited to", and can be used interchangeably with each other. The word "or" and "and" used herein refer to the phrase "and / or", and can be used interchangeably with it, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to", and can be used interchangeably with it.

[0065] It should also be noted that in the devices, equipment, and methods of the present application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of the present application.

[0066] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

[0067] The above description has been given for purposes of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions, and sub-combinations thereof.

Claims

1. A cooling component, characterized in that, include: A cooling body (110) extending along a first direction; A heat conductor (120) is arranged on both sides of the cooling body (110) along the first direction; A current collector (130) arranged along a first direction and formed on both sides of the cooling body (110), the current collector (130) being connected to a side of the heat conductor (120) facing away from the cooling body (110); Wherein, the cooling body (110), the heat conductor (120) and the current collector (130) are integrated into one body.

2. The cooling assembly according to claim 1, wherein The cooling body (110) comprises a first cold plate (112) and a second cold plate (113) which are stacked and connected, and the second cold plate (113) is recessed toward one side of the first cold plate (112) to form a cooling channel (114) between the first cold plate (112) and the second cold plate (113); Wherein, the heat conductor (120) is connected to a side surface of at least one of the first cold plate (112) and the second cold plate (113).

3. The cooling assembly according to claim 2, wherein, The cooling body (110) comprises, on the projection surface, intermediate sections (116) arranged in sequence along the first direction and extending perpendicularly to the first direction, and a U-shaped connecting section (115) connecting two adjacent intermediate sections (116); a plurality of intermediate sections (116) and a plurality of connecting sections (115) are connected in sequence so that the cooling channels (114) in each of the intermediate sections (116) and the connecting sections (115) meander and flow in the first direction.

4. The cooling assembly according to claim 3, wherein, The heat conductor (120) comprises a first arcuate edge (122) and a second arcuate edge (123) which are arranged opposite to each other, and the first arcuate edge (122) is adapted to the side surface of the connecting section (115); A third arc-shaped edge (132) is provided on one side of the current collector (130) close to the heat conductor (120), and the third arc-shaped edge (132) is adapted to the second arc-shaped edge (123); The symmetry axis of the first arc-shaped edge (122), the symmetry axis of the second arc-shaped edge (123), the symmetry axis of the third arc-shaped edge (132), the symmetry axis of the heat conductor (120), and the symmetry axis of the current collector (130) are coaxial and perpendicular to the first direction.

5. The cooling assembly according to claim 2, wherein The two side edges of the first cold plate (112) are provided with abutting portions (1121) protruding from the second cold plate (113), so as to be mounted on the heat conductor (120) through the abutting portions (1121); the side surfaces of the heat conductor (120) are connected to the side surfaces of the second cold plate (113); and the top surface of the heat conductor (120) is connected to the bottom surface of the abutting portions (1121).

6. The cooling assembly according to any one of claims 1-5, characterized in that, The heat conductor (120) comprises a first surface (121) parallel to the first direction, the current collector (130) comprises a second surface (131) parallel to the first direction, and the first surface (121) and the second surface (131) are coplanar.

7. The cooling assembly according to claim 6, wherein The first surface (121) at least includes the bottom surface of the heat conductor (120), and the second surface (131) at least includes the bottom surface of the bus bar (130).

8. A battery pack, characterized in that, Comprising: A battery box (210); A plurality of battery cells (220) disposed within the battery box (210), the battery cells (220) including a top cover (221) and a pole post (222) disposed on the top cover (221); The cooling assembly according to any one of claims 1 to 7, disposed on the top cover, and the pole posts (222) of two adjacent battery cells (220) are connected to the bottom surface of the bus bar (130).

9. The battery pack according to claim 8, characterized in that, The pole posts (222) of two adjacent battery cells (220) are further connected to the bottom surface of the heat conductor (120); The two pole posts (222) of the same battery cell (220) are further connected to the bottom surfaces of two heat conductors (120).

10. An electrical device, characterized in that, Comprising a battery pack according to claim 8 or 9.

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