Battery module, battery pack and electric equipment

Abstract

The utility model relates to a battery module and relates to the technical field of batteries, the battery module comprises a plurality of battery cells, a heat exchange body and a busbar, the top wall of each battery cell is provided with a pole, the heat exchange body comprises a first heat exchange plate and a second heat exchange plate, the first heat exchange plate is provided with a plurality of first avoiding holes which are oppositely spaced in the X direction and / or the Y direction, and the second heat exchange plate is provided with a plurality of second avoiding holes which are oppositely spaced in the X direction and / or the Y direction. The first heat exchange plate covers the side, close to the pole columns, of the battery cell in the Z direction, the pole columns penetrate through the first receding holes in the corresponding positions in the Z direction, the second heat exchange plate is connected with the first heat exchange plate in an angle mode, and the second heat exchange plate extends towards one side of the battery cell in the Z direction so that the second heat exchange plate can cover the side wall of the battery cell. And the busbar is connected with the pole penetrating through the first avoiding hole. According to the battery module, the battery pack and the electric equipment, the top wall and the side wall of the battery cell can be cooled at the same time, and the problem that the local temperature of the side wall of the battery cell is too high is solved.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery module, a battery pack, and an electrical device. Background Technology

[0002] During operation, battery cells typically generate a significant amount of heat, causing their operating temperature to rise. Therefore, cooling devices are usually required to dissipate heat and maintain the battery cells within a suitable operating temperature range.

[0003] In related technologies, cooling devices are usually located on the top wall of the battery cell, mainly to cool and dissipate heat from the top wall of the battery cell. However, they cannot cool both the top and side walls of the battery cell at the same time, which can easily lead to excessively high local temperatures on the side walls of the battery cell, thereby affecting the service life of the battery cell. Utility Model Content

[0004] To address the aforementioned technical problems, embodiments of this application provide a battery module, battery pack, and electrical device that can simultaneously cool and dissipate heat from the top and side walls of the battery cell, thereby improving the problem of localized overheating on the side walls of the battery cell and extending the battery cell's lifespan.

[0005] Firstly, a battery module is provided, comprising:

[0006] Multiple battery cells are arranged in an array, and each battery cell has an electrode post on its top wall;

[0007] The heat exchanger includes a first heat exchange plate and a second heat exchange plate. The first heat exchange plate has a plurality of first clearance holes spaced apart along the X and / or Y directions. The first heat exchange plate covers the side of the battery cell near the electrode post along the Z direction. The electrode posts are all inserted through the first clearance holes at corresponding positions along the Z direction. The second heat exchange plate is angularly connected to the first heat exchange plate and extends along the Z direction toward one side of the battery cell so that the second heat exchange plate covers the sidewall of the battery cell. The X direction, the Y direction, and the Z direction respectively represent the extension directions of the X-axis, the Y-axis, and the Z-axis in a spatial rectangular coordinate system.

[0008] A busbar is located on the side of the first heat exchange plate away from the battery cell, and the busbar is connected to the electrode post passing through the first clearance hole.

[0009] According to a first aspect of this application, the first heat exchange plate is connected to the second heat exchange plate on both opposite sides along the X direction, so that the heat exchange body forms a U-shaped frame, the heat exchange body is held in place by a plurality of the battery cells, and the two second heat exchange plates respectively cover the opposite side walls of the plurality of battery cells.

[0010] According to a first aspect of this application, the battery module further includes:

[0011] A first heat conductor is placed between the first heat exchange plate and the busbar along the Z direction.

[0012] According to a first aspect of this application, the first heat conductor is configured to conform to the busbar.

[0013] The first heat conductor is provided with a second clearance hole, which is connected to the first clearance hole. The pole is inserted through the first clearance hole and the second clearance hole along the Z direction.

[0014] According to a first aspect of this application, the battery module further includes a second heat conductor, which is configured to conform to the heat exchanger.

[0015] The second heat conductor includes a first heat-conducting plate and a second heat-conducting plate. The first heat-conducting plate is placed between the first heat exchange plate and the top wall of the battery cell along the Z direction. The second heat-conducting plate is connected to the first heat-conducting plate at an angle and extends towards one side of the battery cell along the Z direction, so that the second heat-conducting plate is placed between the second heat exchange plate and the side wall of the battery cell.

[0016] The first heat-conducting plate is connected to the second heat-conducting plate on both sides opposite to each other along the X direction, so that the second heat-conducting body forms a U-shaped frame. The second heat-conducting body is held in place by the multiple battery cells, and the two second heat-conducting plates respectively cover the opposite side walls of the multiple battery cells.

[0017] According to a first aspect of this application, the first heat-conducting plate is provided with a plurality of third clearance holes, and the plurality of third clearance holes are connected to the plurality of first clearance holes in a one-to-one correspondence. The pole is inserted through the corresponding connected first clearance holes and third clearance holes along the Z direction.

[0018] According to a first aspect of this application, the first heat exchange plate is provided with a fourth clearance hole, the first heat conduction plate is provided with a fifth clearance hole, and the fourth clearance hole and the fifth clearance hole are in communication.

[0019] The battery module also includes:

[0020] An explosion-proof valve is disposed on the side of the battery cell close to the heat exchanger along the Z direction, and is located between the two poles of a single battery cell, and the position of the explosion-proof valve corresponds to the position of the fourth clearance hole and the fifth clearance hole.

[0021] According to a first aspect of this application, the heat exchanger has a hollow structure, and the inner cavity of the heat exchanger is used for the flow of a cooling medium.

[0022] Secondly, a battery pack is also provided, including the battery module as described in the previous embodiment.

[0023] Thirdly, an electrical device is also provided, including a battery pack as described in the previous embodiments.

[0024] The battery module, battery pack, and electrical equipment provided in this application embodiment achieve heat exchange between the first heat exchange plate and the top wall of the battery cell by covering the side of the battery cell near the terminal post along the Z direction, thereby cooling the top wall of the battery cell. By extending the second heat exchange plate along the Z direction toward one side of the battery cell, so that the second heat exchange plate can cover the side wall of the battery cell, heat exchange between the second heat exchange plate and the side wall of the battery cell can be achieved, thereby cooling the side wall of the battery cell. This effectively improves the problem of local overheating of the side wall of the battery cell and extends the service life of the battery cell. Attached Figure Description

[0025] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0026] Figure 1 This is a schematic diagram of the structure of a battery module provided in an exemplary embodiment of this application.

[0027] Figure 2 An exploded view of a battery module provided as an exemplary embodiment of this application.

[0028] Reference numerals: 100-Battery module; 110-Cell; 111-Terminal post; 120-Heat exchanger; 121-First heat exchange plate; 122-Second heat exchange plate; 123-First clearance hole; 124-Fourth clearance hole; 130-Bus; 140-First heat conductor; 141-Second clearance hole; 150-Second heat conductor; 151-First heat conductor plate; 152-Second heat conductor plate; 153-Third clearance hole; 154-Fifth clearance hole. Detailed Implementation

[0029] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein.

[0030] like Figure 1 and Figure 2As shown, the battery module 100 provided in this application embodiment may include a plurality of battery cells 110, which are arranged in an array (see reference). Figure 2 (In the arrangement state), each cell 110 has a terminal 111 on its top wall. The terminal 111 can be used to connect external electrical components to realize the electrical connection between the external electrical components and the cell 110.

[0031] like Figure 2 As shown, the battery module 100 may further include a heat exchanger 120, which may include a first heat exchange plate 121, the first heat exchange plate 121 being along the Z direction (reference). Figure 2 The Z-axis extension direction of the medium-space rectangular coordinate system) covers the side of the cell 110 closest to the electrode post 111 (that is... Figure 2 (The top wall of the battery cell 110) In this way, the first heat exchange plate 121 can exchange heat with the top wall of the battery cell 110, thereby cooling and dissipating heat from the top wall of the battery cell 110, effectively improving the problem that the top wall of the battery cell 110 is prone to local overheating.

[0032] like Figure 2 As shown, the first heat exchange plate 121 has a plurality of relatively spaced first clearance holes 123. The pole post 111 can be inserted into the first clearance hole 123 at the corresponding position along the Z direction, which can prevent the first heat exchange plate 121 from blocking the pole post 111 and ensure that the pole post 111 can be connected to external electrical components.

[0033] In one embodiment, a plurality of first clearance holes 123 may be along the X direction (reference) Figure 2 The X-axis extension direction of the medium-space rectangular coordinate system is set at intervals; and / or, multiple first clearance holes 123 can be set along the Y direction (refer to...). Figure 2 The Y-axis extension direction of the medium-space rectangular coordinate system is set at intervals.

[0034] like Figure 2 As shown, the aforementioned heat exchanger 120 may further include a second heat exchange plate 122. The second heat exchange plate 122 is angularly connected to the first heat exchange plate 121, and the second heat exchange plate 122 extends along the Z direction toward one side of the battery cell 110, so that the second heat exchange plate 122 can cover the sidewall of the battery cell 110. In this way, the second heat exchange plate 122 can exchange heat with the sidewall of the battery cell 110, thereby cooling and dissipating heat from the sidewall of the battery cell 110, effectively improving the problem of local overheating of the sidewall of the battery cell 110, and extending the service life of the battery cell 110.

[0035] The first heat exchange plate 121 and the second heat exchange plate 122 are connected at an angle and adopt an integral molding structure, which can realize heat exchange with the top wall and side wall of the battery cell 110, thereby simultaneously cooling and dissipating heat from the top wall and side wall of the battery cell 110.

[0036] In one embodiment, the angle between the second heat exchange plate 122 and the first heat exchange plate 121 can be set according to the angle between the top wall and the side wall of the battery cell 110, so that the heat exchanger 120 and the battery cell 110 are more compatible and can achieve better heat dissipation.

[0037] In one embodiment, the heat exchanger 120 has a hollow structure (that is, the first heat exchange plate 121 and the second heat exchange plate 122 mentioned above are both hollow structures). The inner cavity of the heat exchanger 120 is used to flow through a cooling medium (including coolant, cold air, etc.). The cooling medium can absorb the heat transferred by the heat exchanger 120 and cool and dissipate heat on the top and side walls of the battery cell 110 through the heat exchanger 120.

[0038] like Figure 2 As shown, the battery module 100 may include a busbar 130, which is located on the side of the first heat exchange plate 121 away from the battery cell 110. The busbar 130 is connected to the terminal post 111 passing through the first clearance hole 123. It should be understood that in practical applications, the current through the terminal post 111 will pass through the busbar 130. The busbar 130 will generate heat during the current transmission process, and the first heat exchange plate 121 can also exchange heat with the busbar 130, thereby cooling the busbar 130.

[0039] like Figure 2 As shown, the first heat exchange plate 121 is connected to two opposite sides along the X direction by a second heat exchange plate 122. In this way, the heat exchange body 120 (including one first heat exchange plate 121 and two second heat exchange plates 122) can form a U-shaped frame, which can easily hold multiple battery cells 110. On the one hand, it can enhance the assembly stability between the heat exchange body 120 and the multiple battery cells 110. On the other hand, the two second heat exchange plates 122 can respectively cover the opposite side walls of the multiple battery cells 110, and the two second heat exchange plates 122 can dissipate heat from the opposite side walls of the multiple battery cells 110, effectively improving the heat dissipation efficiency of the opposite side walls of the multiple battery cells 110 and improving the problem of local overheating on the opposite side walls of the multiple battery cells 110.

[0040] like Figure 2 As shown, the battery module 100 may further include a first heat conductor 140, which is disposed along the Z-direction between the first heat exchange plate 121 and the busbar 130. It should be understood that, on the one hand, the first heat conductor 140 can transfer heat between the first heat exchange plate 121 and the busbar 130, assisting in heat exchange between the first heat exchange plate 121 and the busbar 130, thereby achieving cooling and heat dissipation of the busbar 130; on the other hand, the first heat conductor 140 can separate the first heat exchange plate 121 and the busbar 130 from each other, preventing direct contact between the first heat exchange plate 121 and the busbar 130 and preventing short circuits.

[0041] In one embodiment, there are multiple busbars 130, and the number of first heat conductors 140 is the same as the number of busbars 130, and they correspond one-to-one.

[0042] In one embodiment, the first heat conductor 140 is made of an insulating and thermally conductive material, such as silicone, ceramic, etc.

[0043] like Figure 2 As shown, the first heat conductor 140 is configured to conform to the busbar 130, that is, the first heat conductor 140 and the busbar 130 are similar in shape and size. This helps the first heat conductor 140 to fit better into the busbar 130, thereby improving the heat conduction efficiency of the first heat conductor 140.

[0044] like Figure 2 As shown, the first heat conductor 140 is provided with a second clearance hole 141, which is connected to the first clearance hole 123. The electrode post 111 can be inserted through the first clearance hole 123 and the second clearance hole 141 along the Z direction. In this way, the first heat conductor 140 can avoid blocking the electrode post 111 and ensure that the electrode post 111 can be connected to external electrical components.

[0045] like Figure 2 As shown, the battery module 100 may further include a second heat conductor 150, which is disposed between the heat exchanger 120 and the battery cell 110. It should be understood that, on the one hand, the second heat conductor 150 can transfer heat between the heat exchanger 120 and the battery cell 110, assisting in heat exchange between the heat exchanger 120 and the battery cell 110, thereby achieving the effect of cooling the battery cell 110; on the other hand, the second heat conductor 150 can separate the heat exchanger 120 and the battery cell 110 from each other, preventing direct contact between the heat exchanger 120 and the battery cell 110 and preventing short circuits.

[0046] like Figure 2 As shown, the second heat conductor 150 is configured to conform to the heat exchanger 120, that is, the second heat conductor 150 and the heat exchanger 120 are similar in shape and size. This helps the second heat conductor 150 to fit better into the heat exchanger 120, thereby improving the heat transfer efficiency of the second heat conductor 150.

[0047] Specifically, such as Figure 2 As shown, the second heat conductor 150 includes a first heat-conducting plate 151, which is placed between the first heat exchange plate 121 and the top wall of the battery cell 110 along the Z direction. In this way, the first heat-conducting plate 151 can not only assist in heat exchange between the first heat exchange plate 121 and the top wall of the battery cell 110, but also play an insulating role between the first heat exchange plate 121 and the top wall of the battery cell 110.

[0048] like Figure 2As shown, the second heat conductor 150 may further include a second heat conductor plate 152. The second heat conductor plate 152 is connected to the first heat conductor plate 151 at an angle, and the second heat conductor plate 152 extends along the Z direction toward one side of the battery cell 110, so that the second heat conductor plate 152 is placed between the second heat exchange plate 122 and the side wall of the battery cell 110. In this way, the second heat conductor plate 152 can not only assist in heat exchange between the second heat exchange plate 122 and the side wall of the battery cell 110, but also play an insulating role between the second heat exchange plate 122 and the side wall of the battery cell 110.

[0049] In one embodiment, the angle between the second heat-conducting plate 152 and the first heat-conducting plate 151 can be set according to the angle between the top wall and the side wall of the battery cell 110, so that the second heat-conducting body 150 and the battery cell 110 are more compatible, which is conducive to improving the overall heat conduction efficiency of the second heat-conducting body 150, thereby improving the heat exchange efficiency between the heat exchanger 120 and the battery cell 110.

[0050] like Figure 2 As shown, the first heat-conducting plate 151 is connected to two opposite sides of each other along the X direction by a second heat-conducting plate 152. In this way, the second heat-conducting body 150 (including one first heat-conducting plate 151 and two second heat-conducting plates 152) can form a U-shaped frame, which can be easily held in place by multiple battery cells 110. On the one hand, this can enhance the assembly stability between the second heat-conducting body 150 and the multiple battery cells 110. On the other hand, the two second heat-conducting plates 152 can respectively cover the opposite side walls of the multiple battery cells 110, and the two second heat-conducting plates 152 can conduct heat to the opposite side walls of the multiple battery cells 110, effectively improving the heat dissipation efficiency of the opposite side walls of the multiple battery cells 110.

[0051] In one embodiment, both the first heat-conducting plate 151 and the second heat-conducting plate 152 are made of thermally conductive and insulating materials, such as silicone, ceramic, etc.

[0052] like Figure 2 As shown, the first heat-conducting plate 151 is provided with a plurality of third clearance holes 153, which are connected to a plurality of first clearance holes 123 in a one-to-one correspondence. The electrode post 111 can be inserted along the Z direction into the corresponding connected first clearance holes 123 and third clearance holes 153. In this way, the first heat-conducting plate 151 can avoid blocking the electrode post 111 and ensure that the electrode post 111 can be connected to external electrical components.

[0053] It should be noted that the distribution of the multiple third clearance holes 153 is the same as that of the multiple first clearance holes 123, that is, the multiple third clearance holes 153 can be spaced apart along the X direction; and / or, the multiple third clearance holes 153 can be spaced apart along the Y direction.

[0054] In one embodiment, the battery module 100 may also include an explosion-proof valve (not shown in the figure). The explosion-proof valve is located on the side of the cell 110 along the Z direction near the heat exchanger 120 and between the two terminals 111 of a single cell 110. When the pressure inside the cell 110 rises sharply to the pressure threshold due to short circuit, high temperature or other reasons, the explosion-proof valve will automatically open to release the high-pressure gas inside, thereby preventing the cell 110 from exploding due to excessive internal pressure.

[0055] like Figure 2 As shown, the first heat exchange plate 121 has a fourth clearance hole 124, and the first heat conduction plate 151 has a fifth clearance hole 154. The fourth clearance hole 124 and the fifth clearance hole 154 are connected. The position of the aforementioned explosion-proof valve corresponds to the positions of the fourth clearance hole 124 and the fifth clearance hole 154. It should be understood that the fourth clearance hole 124 and the fifth clearance hole 154 can be used to avoid the installation position of the explosion-proof valve and can allow high-pressure gas to pass through, preventing excessive pressure inside the battery cell 110 and improving the overall safety performance of the battery module 100.

[0056] In one embodiment, such as Figure 2 As shown, one set of first clearance holes 123 is corresponding to the negative terminal 111 of multiple battery cells 110, and another set of first clearance holes 123 is corresponding to the positive terminal 111 of multiple battery cells 110. A fourth clearance hole 124 is located between the two sets of first clearance holes 123.

[0057] In one embodiment, such as Figure 2 As shown, one set of third clearance holes 153 is corresponding to the negative terminal 111 of multiple battery cells 110, and another set of third clearance holes 153 is corresponding to the positive terminal 111 of multiple battery cells 110. The fifth clearance hole 154 is located between the two sets of third clearance holes 153.

[0058] This application also provides a battery pack, which includes the battery module as described in the previous embodiments and has all the functions of the battery module. The beneficial effects of this battery pack can be referred to the beneficial effects of the aforementioned battery module.

[0059] This application also provides an electrical device that includes the battery pack described in the foregoing embodiments and has all the functions of the battery pack. The beneficial effects of the device can be referred to the beneficial effects of the aforementioned battery pack and battery module.

[0060] In one embodiment, the aforementioned electrical equipment can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, power tools, energy storage devices, amusement equipment, elevators, and lifting equipment, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, or electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.; energy storage devices can be energy storage walls, base station energy storage, container energy storage, etc.; amusement equipment can be carousels, drop towers, etc. This application does not impose any special limitations on the aforementioned electrical equipment.

[0061] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0062] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0063] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0064] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this 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 this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0065] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A battery module, characterized in that, include: Multiple battery cells (110) are arranged in an array, and each battery cell (110) has a terminal post (111) on its top wall; The heat exchanger (120) includes a first heat exchange plate (121) and a second heat exchange plate (122). The first heat exchange plate (121) has a plurality of first clearance holes (123) spaced apart along the X and / or Y directions. The first heat exchange plate (121) covers the side of the battery cell (110) near the electrode (111) along the Z direction. The electrode (111) passes through the first clearance holes (123) at corresponding positions along the Z direction. The second heat exchange plate (122) is angularly connected to the first heat exchange plate (121). The second heat exchange plate (122) extends along the Z direction toward one side of the battery cell so that the second heat exchange plate (122) covers the sidewall of the battery cell (110). The X direction, the Y direction, and the Z direction respectively represent the extension direction of the X-axis, the extension direction of the Y-axis, and the extension direction of the Z-axis in a spatial rectangular coordinate system. A busbar (130) is located on the side of the first heat exchange plate (121) away from the battery cell (110), and the busbar (130) is connected to the pole (111) passing through the first clearance hole (123).

2. The battery module according to claim 1, characterized in that, The first heat exchange plate (121) is connected to the second heat exchange plate (122) on both sides opposite to each other along the X direction, so that the heat exchange body (120) forms a U-shaped frame. The heat exchange body (120) is held in place by a plurality of the battery cells (110), and the two second heat exchange plates (122) respectively cover the opposite side walls of the plurality of battery cells (110).

3. The battery module according to claim 1, characterized in that, The battery module also includes: A first heat conductor (140) is disposed along the Z direction between the first heat exchange plate (121) and the busbar (130).

4. The battery module according to claim 3, characterized in that, The first heat conductor (140) is configured to conform to the shape of the busbar (130); The first heat conductor (140) is provided with a second clearance hole (141), which is connected to the first clearance hole (123). The pole post (111) passes through the first clearance hole (123) and the second clearance hole (141) along the Z direction.

5. The battery module according to claim 1, characterized in that, The battery module also includes a second heat conductor (150), which is configured to conform to the heat exchanger (120); The second heat conductor (150) includes a first heat conductor plate (151) and a second heat conductor plate (152). The first heat conductor plate (151) is placed between the first heat exchange plate (121) and the top wall of the battery cell (110) along the Z direction. The second heat conductor plate (152) is connected to the first heat conductor plate (151) at an angle and extends towards one side of the battery cell along the Z direction, so that the second heat conductor plate (152) is placed between the second heat exchange plate (122) and the side wall of the battery cell (110). The first heat-conducting plate (151) is connected to the second heat-conducting plate (152) on both sides opposite to each other along the X direction, so that the second heat-conducting body (150) forms a U-shaped frame. The second heat-conducting body (150) is held in place by a plurality of the battery cells (110), and the two second heat-conducting plates (152) respectively cover the opposite side walls of the plurality of battery cells (110).

6. The battery module according to claim 5, characterized in that, The first heat-conducting plate (151) is provided with a plurality of third clearance holes (153), and the plurality of third clearance holes (153) are connected to the plurality of first clearance holes (123) in a one-to-one correspondence. The pole post (111) passes through the corresponding connected first clearance hole (123) and third clearance hole (153) along the Z direction.

7. The battery module according to claim 5, characterized in that, The first heat exchange plate (121) is provided with a fourth clearance hole (124), and the first heat conduction plate (151) is provided with a fifth clearance hole (154). The fourth clearance hole (124) and the fifth clearance hole (154) are connected. The battery module also includes: An explosion-proof valve is provided on the side of the battery cell (110) along the Z direction near the heat exchanger (120) and between the two poles (111) of a single battery cell (110), and the position of the explosion-proof valve corresponds to the position of the fourth clearance hole (124) and the fifth clearance hole (154).

8. The battery module according to any one of claims 1 to 7, characterized in that, The heat exchanger (120) has a hollow structure, and the inner cavity of the heat exchanger (120) is used for the flow of cooling medium.

9. A battery pack, characterized in that, include: The battery module as described in any one of claims 1 to 8.

10. An electrical appliance, characterized in that, include: The battery pack as described in claim 9.

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