A busbar cooling assembly and battery module

Abstract

The present invention relates to the technical field of new energy batteries, and provides a busbar cooling assembly and a battery module, wherein the busbar cooling assembly includes a mounting frame, which is formed with a mounting cavity; a heat-conducting insulating bracket, which is mounted in pairs on the mounting frame and is located on two opposite sides of the mounting cavity; a busbar, which is arranged in pairs on both sides of the mounting cavity, and the busbar is fixed on the heat-conducting insulating bracket; at least two battery cells, each of which corresponds to each pair of the busbars, and the battery cells are stacked and arranged in the mounting cavity, and pole ears are arranged on both sides of the battery cells, and the pole ears on both sides of the battery cells are respectively connected to the busbars on both sides. The busbar is installed on the heat-conducting insulating bracket to directly dissipate heat, which improves the heat dissipation efficiency and temperature uniformity. The heat-conducting insulating bracket serves as a supporting structure and a heat conductor at the same time, which improves the system integration efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy batteries, and in particular to a busbar cooling assembly and a battery module. Background Art

[0002] Thermal safety is the focus and hot spot of current research on power battery modules and systems. Existing thermal management generally places thermal conductive materials on the large surface of the battery cell, and rarely uses the battery cell tabs. The thermal conductivity of the battery cell in the thickness direction is low. Placing thermal conductive materials on the large surface of the battery cell will lead to a large temperature difference between the inside and the surface of the battery cell, which will affect the material transfer and electrochemical reaction in the battery cell, and is not conducive to the battery management system to make the most accurate judgment. Soft-pack batteries generally use brackets to support the battery cells and stack the batteries into modules. The series and parallel electrical connection of the battery cells is achieved by connecting the battery cell tabs to the busbars, and the busbars are generally fixed to one end of the bracket. In order to ensure electrical safety and insulation performance, the material of the bracket is generally selected from organic composite materials such as nylon and MPPO. Although it has insulation and flame retardancy, it has poor thermal conductivity. As for the battery cell itself, studies have shown that during its charging and discharging process, especially under high current conditions, the temperature rise at the positive pole tab is the largest and the temperature is the highest. In addition, there is contact resistance at the connection point between the cell tab and the busbar, which causes a large amount of heat to be generated and a high temperature rise when a large current passes through the area, and the existing composite material bracket cannot conduct the heat away in time. In addition, the existing battery module structure is complex, with many thermal management components, and the integration and grouping efficiency are low. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the related art. To this end, the present invention proposes a busbar cooling assembly, in which the busbar is installed on a heat-conducting insulating bracket to directly dissipate heat, thereby improving heat dissipation efficiency and temperature uniformity, and the heat-conducting insulating bracket serves as a supporting structure and a heat-conducting member at the same time, thereby improving system integration efficiency.

[0004] The present invention also provides a battery module, comprising a housing and the busbar cooling assembly.

[0005] A busbar cooling assembly according to an embodiment of the first aspect of the present invention comprises:

[0006] A mounting frame formed with a mounting cavity;

[0007] Thermally conductive insulating brackets are mounted on the mounting frame in pairs and are located on two opposite sides of the mounting cavity;

[0008] Busbars are arranged in pairs on both sides of the installation cavity, and the busbars are fixed on the thermally conductive insulating bracket;

[0009] At least two battery cells, each of which corresponds to each pair of bus bars one by one, the battery cells are stacked in the installation cavity, and pole ears are arranged on both sides of the battery cells, and the pole ears on both sides of the battery cells are respectively connected to the bus bars on both sides.

[0010] According to the busbar cooling assembly of the embodiment of the present invention, the heat-conductive insulating bracket is provided with a protrusion and a recess. When the heat-conductive insulating brackets are stacked, the protrusions and the recesses of two adjacent heat-conductive insulating brackets are interlocked.

[0011] According to the busbar cooling assembly of the embodiment of the present invention, a clamping portion is provided on the busbar, and the busbar is clamped with the heat-conductive insulating bracket through the clamping portion.

[0012] According to the bus cooling assembly of an embodiment of the present invention, the mounting frame includes four fixing rods extending along the stacking direction of the battery cells, the mounting cavity is formed between the four fixing rods, and both ends of each pair of the thermally conductive insulating brackets are installed on the fixing rods through fixing tubes.

[0013] According to the busbar cooling assembly of the embodiment of the present invention, a plurality of fins for heat dissipation are provided on a side of the heat-conducting insulating bracket facing away from the busbar.

[0014] According to the busbar cooling assembly of the embodiment of the present invention, a heat-conducting medium is filled between the busbar and the heat-conducting insulating bracket.

[0015] According to the busbar cooling assembly of the embodiment of the present invention, edge sealing is arranged around the battery core, and a ventilation duct is formed between the battery core, the edge sealing and the thermally conductive insulating bracket.

[0016] According to the bus cooling assembly of the embodiment of the present invention, a liquid cooling plate is provided at one end of the heat-conducting insulating bracket, and the liquid cooling plate is closely connected to the heat-conducting insulating bracket for dissipating heat from the heat-conducting insulating bracket.

[0017] According to the bus cooling assembly of an embodiment of the present invention, a heat conducting plate is arranged between two adjacent battery cells, and the heat conducting plate includes a plate body and a flange located on one side of the liquid cooling plate, the plate body is fitted and connected to the battery cells, and the flange is fitted and connected to the liquid cooling plate.

[0018] Furthermore, an embodiment of the present invention also provides a battery module, comprising a housing and the busbar cooling assembly described above, wherein the busbar cooling assembly is disposed inside the housing.

[0019] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0020] An embodiment of the present invention provides a busbar cooling assembly, including a mounting frame, which is formed with a mounting cavity; a heat-conducting insulating bracket, which is mounted in pairs on the mounting frame and is located on two opposite sides of the mounting cavity; a busbar, which is arranged in pairs on both sides of the mounting cavity, and the busbar is fixed on the heat-conducting insulating bracket; at least two battery cells, each of which corresponds to each pair of the busbars, and the battery cells are stacked and arranged in the mounting cavity, and both sides of the battery cells are provided with pole ears, and the pole ears on both sides of the battery cells are respectively connected to the busbars on both sides. By directly connecting the busbar to the heat-conducting insulating bracket, the heat is directly dissipated from the battery cell and the pole ears, the heat dissipation efficiency of thermal management is improved, the temperature uniformity of the battery cell, especially the thick battery cell, is improved, and the temperature rise is reduced; the heat-conducting insulating bracket replaces the metal heat-conducting plate of the insulating film, reduces safety hazards, and at the same time, as a supporting structure and a heat-conducting member, there is no need to add an additional heat-dissipating flat heat pipe, which improves the integration and lightweight of the battery structure, facilitates assembly, and improves integration efficiency.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 is a schematic structural diagram of a busbar cooling assembly provided by an embodiment of the present invention;

[0024] Figure 2 is a schematic diagram of the connection between the heat-conducting insulating bracket and the busbar bracket provided in an embodiment of the present invention;

[0025] Figure 3 is a schematic structural diagram of a heat-conducting insulating bracket provided in an embodiment of the present invention;

[0026] Figure 4 is a schematic diagram of the structure of a bus provided by an embodiment of the present invention;

[0027] Figure 5 is a schematic structural diagram of an air cooling module provided by an embodiment of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the liquid cooling module provided in an embodiment of the present invention.

[0029] Reference numerals:

[0030] 1. Mounting frame; 11. Fixing rod; 12. Side panel;

[0031] 2. thermally conductive insulating bracket; 21. protrusion; 22. recess; 23. fixing tube; 24. fin;

[0032] 3. busbar; 31. clamping part;

[0033] 4. Battery cell; 41. Tab;

[0034] 5. Edge sealing;

[0035] 6. Ventilation duct;

[0036] 7. heat conducting plate; 71. plate body; 72. flange. DETAILED DESCRIPTION

[0037] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0038] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0039] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0040] In the embodiments of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0042] An embodiment of one aspect of the present invention, in combination with Figure 1 As shown, a busbar cooling assembly is provided, including a mounting frame 1, which is formed with a mounting cavity; heat-conductive insulating brackets 2, which are installed in pairs on the mounting frame 1 and are located on opposite sides of the mounting cavity; buses 3, which are arranged in pairs on both sides of the mounting cavity, and the busbars 3 are fixed on the heat-conductive insulating brackets 2; at least two battery cells 4, each of which corresponds to each pair of busbars 3 one by one, and the battery cells 4 are stacked in the mounting cavity, and pole ears 41 are provided on both sides of the battery cells 4, and the pole ears 41 on both sides of the battery cells 4 are respectively connected to the busbars 3 on both sides. By directly connecting the bus 3 to the thermally conductive insulating bracket 2, the heat is directly dissipated from the battery cell 4 and the tab 41, thereby improving the thermal management and heat dissipation efficiency, improving the temperature uniformity of the battery cell 4, especially the thick battery cell 4, and reducing the temperature rise; the thermally conductive insulating bracket 2 replaces the metal heat conductive plate of the insulating film to reduce safety hazards. The thermally conductive insulating bracket 2 serves as a supporting structure and a heat conductive component at the same time, and there is no need to add additional heat dissipation flat heat pipes, thereby improving the integration and lightweight of the battery structure, facilitating assembly, and improving integration efficiency.

[0043] The thermal conductive insulating bracket 2 has good thermal conductivity and insulation performance, and its material includes but is not limited to silicon nitride, silicon oxide, aluminum nitride, aluminum oxide, zinc oxide or titanium oxide, among which the thermal conductivity of aluminum nitride is greater than 200W / mk and the resistivity is greater than 1013 Ωmm, the thermally conductive insulating bracket 2 made of aluminum nitride has good thermal conductivity and insulation properties.

[0044] According to one embodiment of the present invention, referring to Figure 2 As shown, the thermally conductive insulating bracket 2 is provided with a protrusion 21 and a recess 22. During the stacking process of the thermally conductive insulating brackets 2, the protrusions 21 and recesses 22 of two adjacent thermally conductive insulating brackets 2 fit together to achieve the positioning of the thermally conductive insulating bracket 2. In one embodiment, a protrusion 21 is provided at one end of the thermally conductive insulating bracket 2, and a recess 22 is provided at the other end. During the stacking process of the thermally conductive insulating brackets 2, the protrusion 21 of one thermally conductive insulating bracket 2 and the recess 22 of another thermally conductive insulating bracket 2 fit together to achieve positioning; in another embodiment, both ends of the thermally conductive insulating bracket 2 are provided with protrusions 21 and recesses 22. During the stacking process, multiple protrusions 21 and recesses 22 fit together to achieve positioning. The shapes of the protrusions 21 and recesses 22 can be as shown in the attached figure. Figure 2 The shape shown may also be other shapes such as a cylinder or a hole, as long as they can fit together to achieve the positioning of the thermally conductive insulating bracket 2, and the present application does not make any specific limitation on this.

[0045] According to one embodiment of the present invention, a clamping portion 31 is provided on the bus 3, and the bus 3 is clamped with the thermally conductive insulating bracket 2 through the clamping portion 31. The shape and arrangement position of the clamping portion 31 can be set according to the needs of clamping the bus 3 with the thermally conductive insulating bracket 2. In an optional embodiment, refer to Figure 3 As shown, the shape and arrangement position of the clamping portion 31 are adapted to the shape of the bus 3. The clamping portion 31 is arranged at a corner of the bus 3. A clamping groove matching the clamping portion 31 is arranged on the thermally conductive insulating bracket 2. The bus 3 is fixed to the thermally conductive insulating bracket 2 by clamping the clamping portion 31 on the clamping groove.

[0046] For further reference, Figure 2 and Figure 4 As shown, a fixing hole is opened on the other end of the bus 3 away from the clamping portion 31, and a fixing column is installed at a position corresponding to the fixing hole on the thermally conductive insulating bracket 2. The fixing hole passes through the fixing column and the outer side is locked by a nut, so that the bus 3 can be further fixed on the thermally conductive insulating bracket 2.

[0047] According to one embodiment of the present invention, referring to Figure 1 As shown, the mounting frame 1 includes four fixing rods 11 extending along the stacking direction of the battery cells 4, and a mounting cavity for mounting the battery cells 4 is formed between the four fixing rods 11. Both ends of each pair of thermally conductive insulating brackets 2 are mounted on the fixing rods 11 through fixing tubes 23. The mounting frame 1 also includes side panels 12 arranged at both ends, and the side panels 12 at both ends are fixed by four fixing rods 11, which further improves the overall structural strength of the mounting frame 1.

[0048] According to one embodiment of the present invention, referring to Figure 3 As shown, the side of the heat-conducting insulating bracket 2 facing away from the busbar 3 is provided with a plurality of fins 24 for heat dissipation. Figure 3 As shown, a plurality of fins 24 for heat dissipation are evenly arranged on the side of the heat-conducting insulating bracket 2 facing away from the bus 3. The fins 24 can be metal sheets with strong thermal conductivity to increase the heat exchange surface area and improve the heat dissipation efficiency. The arrangement of the fins 24 causes the air to form a strong turbulence in the flow channel, thereby enhancing the heat exchange. The fins 24 can also improve the overall strength of the radiator and effectively expand its application range.

[0049] According to one embodiment of the present invention, in order to improve the thermal conductivity between the bus 3 and the thermally conductive insulating bracket 2, a thermally conductive medium is filled between the bus 3 and the thermally conductive insulating bracket 2. The thermally conductive medium includes but is not limited to thermal grease, thermally conductive silica gel, thermally conductive silica gel sheet and artificial synthetic graphite sheet, etc., which can be selected according to the specific needs of thermal conductivity, and this application does not make specific limitations on this.

[0050] According to an embodiment of the present invention, the bus 3 is cooled by air cooling. Figure 5 As shown, the battery cell 4 is provided with an edge seal 5 around it, and a ventilation duct 6 is formed between the battery cell 4, the edge seal 5 and the thermally conductive insulating bracket 2. The edge seal 5 is provided around the battery cell 4 to encapsulate and protect the battery. The setting of the edge seal 5 forms a ventilation duct 6 for convenient ventilation between the battery cell 4, the edge seal 5 and the thermally conductive insulating bracket 2. With the air circulation in the ventilation duct 6, the air circulation rate is improved, which facilitates the heat dissipation of the fins 24 on the back of the thermally conductive insulating bracket 2, and realizes the cooling of the thermally conductive insulating bracket 2. At the same time, the ventilation duct 6 can also play a certain cooling role on the battery cell 4.

[0051] According to another embodiment of the present invention, the bus 3 is cooled by liquid cooling. Figure 5 As shown, a liquid cooling plate (not shown in the figure) is provided at one end of the heat-conducting insulating bracket 2, and the liquid cooling plate is closely connected to the heat-conducting insulating bracket 2 for dissipating heat from the heat-conducting insulating bracket 2. In an optional embodiment, the liquid cooling plate is provided at the bottom of one end of the heat-conducting insulating bracket 2, and a coolant inlet and a coolant outlet are provided on the liquid cooling plate. The coolant circulates in the liquid cooling plate through the coolant inlet and the coolant outlet to take away heat, thereby dissipating heat from the battery cell 4, the tab 41 and the bus 3.

[0052] According to one embodiment of the present invention, referring to Figure 6As shown, a heat conducting plate 7 is arranged between two adjacent battery cells 4, and the heat conducting plate 7 includes a plate body 71 and a flange 72 located on one side of the liquid cooling plate. The plate body 71 is fitted and connected to the battery cell 4, and the flange 72 is fitted and connected to the liquid cooling plate. The heat between the battery cells 4 is also transferred to the liquid cooling plate through the plate body 71 and the flange 72 for cooling. In an optional embodiment, in order to reduce the weight of the bus 3 cooling assembly, a liquid cooling plate is arranged only on one side of the bottom end of the bus 3 cooling assembly, and the flange 72 is located on the side of the plate body 71 close to the liquid cooling plate, and the flange 72 is fitted and connected to the liquid cooling plate for heat conduction; in another optional embodiment, in order to improve the heat dissipation effect, a liquid cooling plate is arranged on the top and bottom of the heat-conducting insulating bracket 2 of the bus cooling assembly, and flanges 72 are arranged on both sides of the plate body 71 close to the liquid cooling plate, and the flanges 72 are fitted and connected to the liquid cooling plate for heat conduction.

[0053] During the assembly of the busbar cooling assembly, the heat-conducting insulating bracket 2 can be first installed on the fixing rod 11 of the mounting frame 1, the busbar 3 can be fixed on the heat-conducting insulating bracket 2, and then the battery cells 4 can be stacked and arranged in the mounting cavity formed by the mounting frame 1, and the pole ears 41 on both sides of the battery cells 4 can be connected to the busbars 3 on both sides, and the battery cells 4 can be connected in series or in parallel through the busbars 3; the busbar 3 can also be first fixed on the heat-conducting insulating bracket 2, and then connected to the battery cells 4, and after the overall assembly is completed, the fixing tube 23 of the heat-conducting insulating bracket 2 can be inserted. On the fixing rod 11 of the mounting frame 1, a bus cooling assembly is continuously stacked to form. The present application adopts a modular design to optimize heat conduction at the pole ear 41. The pole ear 41 and the bus 3 are directly connected to the thermally conductive insulating bracket 2. The pole ear 41 is directly connected to the inside of the battery cell 4, thereby improving the thermal management and heat dissipation efficiency, improving the temperature uniformity of the battery cell 4, especially the thick battery cell, and reducing the temperature rise. It can also be flexibly adjusted according to the thickness of the battery cell 4, thereby realizing the large-surface heat dissipation of the battery cell 4 and the heat dissipation of the pole ear 41 simultaneously, further improving the heat dissipation capacity of the battery module.

[0054] An embodiment of the present invention provides a bus cooling assembly, comprising a mounting frame 1, which is formed with a mounting cavity; heat-conductive insulating brackets 2, which are mounted in pairs on the mounting frame 1 and are located on opposite sides of the mounting cavity; buses 3, which are arranged in pairs on both sides of the mounting cavity, and the bus 3 are fixed on the heat-conductive insulating brackets 2; at least two battery cells 4, each of the battery cells 4 corresponds one-to-one to each pair of the bus bars 3, the battery cells 4 are stacked in the mounting cavity, and pole ears 41 are arranged on both sides of the battery cells 4, and the pole ears 41 on both sides of the battery cells 4 are respectively connected to the bus bars 3 on both sides. By directly connecting the bus 3 to the thermally conductive insulating bracket 2, the heat is directly dissipated at the battery cell 4 and the tab 41, thereby improving the thermal management and heat dissipation efficiency, improving the temperature uniformity of the battery cell 4, especially the thick battery cell 4, and reducing the temperature rise; the thermally conductive insulating bracket 2 replaces the metal heat conductive plate of the insulating film, reducing safety hazards, and at the same time serves as a supporting structure and a heat conductive component, without the need for additional heat dissipation flat heat pipes, thereby improving the integration and lightweight of the battery structure, facilitating assembly, and improving integration efficiency.

[0055] According to another aspect of the present invention, there is provided a battery module, comprising a housing and the busbar cooling assembly described above, wherein the busbar cooling assembly is disposed inside the housing.

[0056] If the busbar cooling assembly has the beneficial effects of the above-mentioned embodiments, the battery module also has corresponding beneficial effects, which will not be described in detail in this application.

[0057] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solutions of the present invention, rather than to limit the present invention. Although the present invention is described in detail with reference to the embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of this application.

Claims

1. A busbar cooling assembly, characterized in that: include: A mounting frame (1) is formed with a mounting cavity; Thermally conductive insulating brackets (2) are mounted in pairs on the mounting frame (1) and are located on two opposite sides of the mounting cavity; Busbars (3) are arranged in pairs on both sides of the installation cavity, and the busbars (3) are fixed on the heat-conducting insulating bracket (2); At least two battery cells (4), each of the battery cells (4) corresponding to each pair of the bus bars (3) on a one-to-one basis, the battery cells (4) being stacked and arranged in the installation cavity, pole ears (41) being arranged on both sides of the battery cells (4), and the pole ears (41) on both sides of the battery cells (4) being respectively connected to the bus bars (3) on both sides.

2. The busbar cooling assembly according to claim 1, characterized in that: The heat-conducting insulating bracket (2) is provided with a protrusion (21) and a recess (22); when the heat-conducting insulating brackets (2) are stacked, the protrusions (21) and the recesses (22) of two adjacent heat-conducting insulating brackets (2) are interlocked.

3. The busbar cooling assembly according to claim 1, characterized in that: The busbar (3) is provided with a clamping portion (31), and the busbar (3) is clamped with the heat-conducting insulating bracket (2) via the clamping portion (31).

4. The busbar cooling assembly according to claim 1, characterized in that: The mounting frame (1) comprises four fixing rods (11) extending along the stacking direction of the battery cells (4), the mounting cavity being formed between the four fixing rods (11), and both ends of each pair of the heat-conducting insulating brackets (2) being passed through the fixing rods (11) via fixing tubes (23).

5. The busbar cooling assembly according to any one of claims 1 to 4, characterized in that: A plurality of fins (24) for heat dissipation are provided on a side of the heat-conducting insulating bracket (2) facing away from the busbar (3).

6. The busbar cooling assembly according to claim 5, characterized in that: A heat-conducting medium is filled between the busbar (3) and the heat-conducting insulating bracket (2).

7. The busbar cooling assembly according to claim 5, characterized in that: The battery core (4) is provided with edge seals (5) around its periphery, and a ventilation duct (6) is formed between the battery core (4), the edge seals (5) and the heat-conducting insulating support (2).

8. The busbar cooling assembly according to any one of claims 1 to 4, characterized in that: A liquid cooling plate is provided at one end of the heat-conducting insulating support (2), and the liquid cooling plate is closely connected to the heat-conducting insulating support (2) and is used to dissipate heat from the heat-conducting insulating support (2).

9. The busbar cooling assembly according to claim 8, characterized in that: A heat conducting plate (7) is provided between two adjacent battery cells (4), the heat conducting plate (7) comprising a plate body (71) and a flange (72) located on one side of the liquid cooling plate, the plate body (71) being fitted and connected to the battery cells (4), and the flange (72) being fitted and connected to the liquid cooling plate.

10. A battery module, characterized in that: It comprises a shell and a busbar cooling assembly as described in any one of claims 1 to 9, wherein the busbar cooling assembly is arranged inside the shell.

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