Case and battery pack

Abstract

The application provides a box and a battery pack. The box comprises a bottom plate and a frame assembly; the bottom plate has a bearing surface and a first end surface arranged at an included angle, the first end surface is connected with the bearing surface, a plurality of through holes are arranged on the first end surface, the plurality of through holes are arranged at intervals along a first direction and penetrate through the bottom plate; and the frame assembly is located on one side of the bottom plate and connected with the bearing surface to define a mounting cavity. According to the above scheme, the heat management medium can be introduced into the through hole, so that the heat management medium exchanges heat with the bottom plate inside the bottom plate, thereby taking away the heat of the battery cell through the bottom plate or heating the battery cell through the bottom plate. In this way, not only can the temperature of the battery cell be adjusted to make the battery cell work at a suitable temperature, but also the heat management medium can be closer to the battery cell to shorten the heat exchange path and improve the heat exchange efficiency.

Description

Technical Field

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

[0002] In related technologies, a battery pack includes a housing and battery modules installed within the housing. The battery module includes multiple battery cells and connectors that electrically connect the cells. Each battery cell includes a casing and electrode assemblies and electrolyte disposed within the casing. The electrode assemblies include a positive electrode, a separator, and a negative electrode, stacked sequentially. The battery cell primarily relies on the movement of metal ions between the positive and negative electrode plates for charging and discharging.

[0003] Since the charging and discharging process of a battery cell is essentially an internal electrochemical reaction, excessively low cell temperature slows down ion migration, reducing the cell's charging and discharging capacity. Conversely, excessively high cell temperature exacerbates side reactions (such as electrolyte decomposition), leading to rapid capacity decay and decreased charging and discharging efficiency. Therefore, how to design a thermal management structure to regulate the cell temperature and ensure its operation at a suitable temperature is the problem this application aims to solve. Utility Model Content

[0004] Embodiments of this application provide a housing and a battery pack that can regulate the temperature of the battery cells so that the cells operate at a suitable temperature.

[0005] In a first aspect, embodiments of this application provide a housing comprising a bottom plate and a frame assembly. The bottom plate has a bearing surface and a first end face arranged at an angle, the first end face being connected to the bearing surface. A plurality of through holes are provided on the first end face, spaced apart along a first direction and penetrating the bottom plate. The frame assembly is located on one side of the bottom plate and connected to the bearing surface to define a mounting cavity. The first direction is parallel to the bearing surface and the first end face. Thus, a thermal management medium can be introduced into the through holes, allowing the thermal management medium to exchange heat with the bottom plate within the bottom plate, thereby carrying away heat from the battery cell through the bottom plate or heating the battery cell through the bottom plate. This not only regulates the temperature of the battery cell, ensuring it operates at a suitable temperature, but also brings the thermal management medium closer to the battery cell, shortening the heat exchange path and improving heat exchange efficiency.

[0006] In some embodiments, a plurality of first fins are provided in the mounting cavity, each first fin being connected to a base plate; wherein the plurality of first fins are arranged sequentially at intervals to divide the mounting cavity into a plurality of sub-cavities, each sub-cavity being configured to mount a battery cell. In this way, not only can heat exchange between the first fins and the battery cell be facilitated, thereby improving the heat exchange efficiency of the battery cell, but the first fins can also enhance the structural strength of the base plate, thereby improving the reliability of the base plate and thus improving the reliability of the battery pack.

[0007] In some embodiments, the first fin is integrally formed with the base plate. This reduces the number of components in the battery pack, improving assembly efficiency, and also reduces connection points, thus minimizing weak points and improving the structural reliability of the enclosure, which in turn enhances the reliability of the battery pack.

[0008] In some embodiments, the first fin extends along the extension direction of the through hole, and the base plate and the first fin are integrally formed from an aluminum extrusion profile. This ensures that the length direction of the first fin is aligned with the extension direction of the through hole, allowing the first fin and the base plate to be integrally formed from the aluminum extrusion profile. This improves both manufacturing efficiency and the heat transfer efficiency of the housing, thereby enhancing the heat dissipation efficiency of the battery cell.

[0009] In some embodiments, an adhesive layer is provided on the surface of the bearing surface that defines the sub-cavity, and the adhesive layer is configured to bond with the battery cell. Thus, fixing the battery cell with the adhesive layer improves the ease of cell fixing and allows for the selection of the required number of cells to be fixed in the housing, thereby preventing empty space within the housing from affecting the positional stability of other cells. This allows the number of cells in the battery pack to be adjusted arbitrarily, improving the adaptability of the battery pack.

[0010] In some embodiments, the frame assembly includes a frame body and a plurality of second fins. The frame body is connected to a bearing surface to define a mounting cavity. The frame body has a first surface facing away from the mounting cavity, and the plurality of second fins are disposed on the first surface. Thus, the surface area of ​​the housing can be increased by the second fins, thereby increasing the contact area between the housing and the heat exchange medium, thereby improving the heat exchange efficiency of the housing and thus improving the thermal management efficiency of the battery cells.

[0011] In some embodiments, the frame body includes two opposing first side plates, which are integrally formed with the base plate. This reduces the number of components in the battery pack, improving assembly efficiency, and also reduces connection points, thus minimizing weak points and improving the structural reliability of the housing, thereby enhancing the overall reliability of the battery pack.

[0012] In some embodiments, the first side plate is parallel to the extension direction of the through hole, and the second fin connected to the first side plate is parallel to the bearing surface. The base plate, the first side plate, and the second fin are integrally formed from an aluminum extrusion profile. This ensures that the first side plate, the through hole, and the second fin are all parallel to the extension direction of the through hole, allowing the first side plate, the second fin, and the base plate to be integrally formed from an aluminum extrusion profile, thereby improving manufacturing efficiency.

[0013] In some embodiments, the frame body further includes two opposing second side plates, which are sandwiched between two first side plates and located at opposite ends of the first side plates; wherein each second side plate is connected to the base plate and the two first side plates. Thus, the battery cell can be surrounded by the first and second side plates to improve the positional stability of the battery cell fixed to the base plate.

[0014] In some embodiments, a plurality of second fins are provided on each first surface of the frame body facing away from the mounting cavity. The plurality of second fins on each first surface are arranged sequentially in a direction perpendicular to the bearing surface, and the surface of the second fin on each first surface farthest from the bottom plate facing away from the bottom plate is flush with the surface of the frame body facing away from the bottom plate. In this way, the housing can have a larger top surface to cooperate with other components, thereby improving the ease of connection of the housing assembly.

[0015] In some embodiments, the through-hole is an oval-shaped hole, and the direction of the longest diameter of the through-hole is parallel to the first direction. In this way, the thickness of the base plate can be controlled to control the size of the battery pack in the thickness direction of the base plate, and the through-hole can have a larger area to reduce the flow resistance of the through-hole to the heat exchange medium, thereby improving the heat exchange efficiency.

[0016] In some embodiments, the housing further includes a partition disposed within the mounting cavity to divide the mounting cavity into a first cavity and a second cavity. The first cavity is configured to mount battery cells, and the second cavity is configured to mount electrical components. This separates the battery cells and the electrical components of the battery pack, reducing interference between them and improving the operational stability of both.

[0017] Secondly, embodiments of this application provide a battery pack including battery cells and the aforementioned housing. Multiple battery cells are disposed within a mounting cavity. By providing through holes in the base plate, a thermal management medium can be introduced into the through holes, allowing the thermal management medium to exchange heat with the base plate within the base plate. This allows the base plate to remove heat from the battery cells or heat the battery cells. This not only regulates the temperature of the battery cells, ensuring they operate at a suitable temperature, but also brings the thermal management medium closer to the battery cells, shortening the heat exchange path and improving heat exchange efficiency.

[0018] The beneficial effects of the embodiments of this application are as follows:

[0019] In the embodiments of this application, by providing through holes in the base plate, the thermal management medium can be introduced into the through holes, allowing the thermal management medium to exchange heat with the base plate inside the base plate. This enables the heat from the battery cell to be carried away more quickly through the base plate, or the base plate to heat the battery cell. In this way, not only can the temperature of the battery cell be regulated to ensure it operates at a suitable temperature, but the thermal management medium can also be brought closer to the battery cell, shortening the heat exchange path and improving heat exchange efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the battery pack structure provided in an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the structure of the box provided in an embodiment of this application;

[0023] Figure 3 yes Figure 2 A magnified structural diagram of part A in the middle;

[0024] Figure 4 This is a schematic diagram of the connection between the first fin and the base plate provided in an embodiment of this application;

[0025] Figure 5 yes Figure 2 A magnified structural diagram of part B.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100 - Battery pack; 20 - Battery cell;

[0028] 10-Box body; 11-Base plate; 111-First end face; 113-Bearing surface; 114-Through hole;

[0029] 12-Frame assembly; 121-Frame body; 122-Second fin; 123-First side plate; 124-Second side plate; 125-First surface;

[0030] 13-First fin; 14-Adhesive layer; 15-Separator;

[0031] 30 - Installation cavity; 31 - First cavity; 311 - Sub-cavity; 32 - Second cavity. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Furthermore, it should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of this application. In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] The terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or device that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such a product.

[0036] Please see Figure 1 This application provides a battery pack 100, which includes battery cells 20 and a housing 10, the housing 10 having a mounting cavity 30. Multiple battery cells 20 are present, and all multiple battery cells 20 are disposed within the mounting cavity 30.

[0037] It is understood that the battery cell 20 mentioned in the embodiments of this application may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc., and the embodiments of this application are not limited to this.

[0038] It is understood that the battery cell 20 may be cylindrical, flat, cuboid, or other shapes. For example, the battery cell 20 is a prismatic battery cell 20. Specifically, the battery pack 100 includes a plurality of rows of battery cells 20, and each row of battery cells 20 includes a plurality of battery cells 20 arranged in sequence.

[0039] The battery cell 20 includes a housing and an electrode assembly and an electrolyte both disposed within the housing. The housing is used to contain the electrode assembly and the electrolyte, providing a stable space for the charging and discharging of the electrode assembly.

[0040] The electrode assembly includes a positive electrode sheet, a separator, and a negative electrode sheet stacked sequentially. The positive electrode sheet includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector, and the current collector without the positive active material layer serves as the positive electrode tab. Taking a lithium-ion battery as an example, the material of the positive current collector can be aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode sheet includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector, and the current collector without the negative active material layer serves as the negative electrode tab. The material of the negative current collector can be copper, and the negative active material can be carbon or silicon, etc.

[0041] It is understandable that the battery pack 100 may also include a cover plate, a battery management system, a battery pack 100 circuit breaker unit, etc.

[0042] Please see Figure 2 , Figure 3 and Figure 4 This application also provides a housing 10. The housing 10 includes a bottom plate 11 and a frame assembly 12. The bottom plate 11 has a first end face 111 of a bearing surface 113 arranged at an included angle. The first end face 111 is connected to the bearing surface 113. A plurality of through holes 114 are provided on the first end face 111. The plurality of through holes 114 are spaced apart along a first direction and penetrate the bottom plate 11. The frame assembly 12 is located on one side of the bottom plate 11 and is connected to the bearing surface 113 to define a mounting cavity 30. The first direction is parallel to the bearing surface 113 and the first end face 111.

[0043] It is understood that one end of the first end face 111 is connected to one end of the bearing surface 113 to define an edge line, and the first direction is parallel to the edge line.

[0044] It is understood that the battery cell 20 is located inside the mounting cavity 30, and the bottom of the battery cell 20 can contact and connect with the bearing surface 113.

[0045] It is understandable that when the housing 10 is made of metal, an insulating component is required between the housing 10 and the battery cell 20. For example, an insulating film can be wrapped around the surface of the battery cell 20.

[0046] It is understood that the frame assembly 12 is located on one side of the base plate 11 to avoid the frame assembly 12 blocking the through hole 114.

[0047] The through-hole 114 is used for the passage of the thermal management medium. The thermal management medium passes through the through-hole 114 to exchange heat with the base plate 11, thereby carrying away the heat absorbed by the battery cell 20 by the base plate 11 to cool down the battery cell 20, or heating the battery cell 20 through the base plate 11 to increase the operating temperature of the battery cell 20.

[0048] It is understood that the thermal management medium can be a fluid or a gas, and this embodiment does not limit it.

[0049] In this embodiment, by providing through holes 114 on the base plate 11, the thermal management medium can be introduced into the through holes 114, allowing the thermal management medium to exchange heat with the base plate 11 inside the base plate 11. This enables the heat from the battery cell 20 to be carried away more quickly through the base plate 11, or the battery cell 20 to be heated through the base plate 11. This not only regulates the temperature of the battery cell 20, ensuring it operates at a suitable temperature, but also brings the thermal management medium closer to the battery cell 20, shortening the heat exchange path and improving heat exchange efficiency.

[0050] In addition, the through hole 114 can reduce the weight of the base plate 11, which is beneficial to improving the energy density of the battery pack 100.

[0051] Please see Figure 4 In some embodiments, a plurality of first fins 13 are provided in the mounting cavity 30. Each first fin 13 is connected to the base plate 11. The plurality of first fins 13 are arranged sequentially at intervals to divide the mounting cavity 30 into a plurality of sub-cavities 311. The sub-cavities 311 are configured to mount the battery cells 20.

[0052] It is understandable that multiple cells 20 can be set in each sub-cavity 311, such as Figure 1 As shown.

[0053] For example, the battery cell 20 is a prismatic battery cell 20, and the battery cell 20 has a length dimension, a width dimension, and a height dimension. The direction of the height dimension is perpendicular to the bearing surface 113. In each sub-cavity 311, a plurality of battery cells 20 are arranged sequentially along the direction of the length dimension. In the direction of the width dimension, the battery cells 20 are spaced apart from the corresponding sub-cavities 311.

[0054] Specifically, in the direction of this width dimension, there is a gap of about 0.5mm between one side of the cell 20 and the cavity wall of the sub-cavity 311. This provides a buffer space for the expansion of the cell 20, thereby improving the stress state of the housing 10.

[0055] In this embodiment, by setting the first fin 13, not only can heat exchange be carried out between the first fin 13 and the cell 20 to improve the heat exchange efficiency of the cell 20, but the first fin 13 can also enhance the structural strength of the base plate 11 to improve the reliability of the base plate 11, thereby improving the reliability of the battery pack 100.

[0056] In some embodiments, the first fin 13 is integrally formed with the base plate 11. This reduces the number of components in the battery pack 100 to improve assembly efficiency and reduces connection points to reduce weak points, thereby improving the structural reliability of the housing 10 and thus enhancing the reliability of the battery pack 100.

[0057] Please see Figure 4 In some embodiments, the first fin 13 extends along the extension direction of the through hole 114, and the base plate 11 and the first fin 13 are integrally formed from an aluminum extrusion profile. This ensures that the length direction of the first fin 13 is aligned with the extension direction of the through hole 114, allowing the first fin 13 and the base plate 11 to be integrally formed from an aluminum extrusion profile. This improves both manufacturing efficiency and the heat transfer efficiency of the housing 10, thereby enhancing the heat dissipation efficiency of the battery cell 20.

[0058] Among them, aluminum extruded profiles (also known as aluminum extrusion profiles) are aluminum alloy profiles produced through an extrusion process. That is, an extruder is used to extrude aluminum alloy billets or aluminum bars heated to a plastic state from a die cavity of a specific shape to form a long strip of aluminum material with a continuous structure. Its shape can be flexibly adjusted according to the die design.

[0059] It is understood that both the first fin 13 and the base plate 11 are made of aluminum alloy. Aluminum alloy itself has a high specific strength (i.e., strength / weight ratio), and the extrusion process causes the metal grains of the aluminum alloy to align along the direction of stress, further improving the tensile strength, fatigue resistance, and rigidity of the first fin 13 and the base plate 11. Furthermore, while possessing suitable structural strength, the aluminum alloy first fin 13 and base plate 11 can also have a lighter weight, which is beneficial for increasing the energy density of the battery pack 100.

[0060] Please see Figure 4 In some embodiments, an adhesive layer 14 is provided on the surface of the bearing surface 113 that defines the sub-cavity 311. The adhesive layer 14 is configured to bond with the battery cell 20. Thus, fixing the battery cell 20 with the adhesive layer improves the ease of fixing the battery cell 20 and allows for the selection of the required number of battery cells 20 to be fixed in the housing 10, thereby preventing empty spaces within the housing 10 from affecting the positional stability of other battery cells 20. This allows the number of battery cells 20 within the battery pack 100 to be adjusted arbitrarily, improving the adaptability of the battery pack 100.

[0061] Please see Figure 2 In some embodiments, the frame assembly 12 includes a frame body 121 and a plurality of second fins 122. The frame body 121 is connected to a bearing surface 113 to define a mounting cavity 30. The frame body 121 has a first surface 125 facing away from the mounting cavity 30. The plurality of second fins 122 are disposed on the first surface 125. In this way, the surface area of ​​the housing 10 can be increased by the second fins 122 to increase the contact area between the housing 10 and the heat exchange medium, thereby improving the heat exchange efficiency of the housing 10 and thus improving the thermal management efficiency of the battery cell 20.

[0062] Please see Figure 2 and Figure 4 In some embodiments, the frame body 121 includes two opposing first side plates 123, which are integrally formed with the base plate 11. This reduces the number of components in the battery pack 100, improving assembly efficiency, and also reduces connection points, thus reducing weak points and improving the structural reliability of the housing 10, thereby enhancing the reliability of the battery pack 100.

[0063] Please see Figure 2 and Figure 4 In some embodiments, the first side plate 123 is parallel to the extending direction of the through hole 114. The second fin 122 connected to the first side plate 123 is parallel to the bearing surface 113, and the base plate 11, the first side plate 123, and the second fin 122 are integrally formed from an aluminum extrusion profile. This ensures that the first side plate 123, the through hole 114, and the second fin 122 are all parallel to the extending direction of the through hole 114, allowing the first side plate 123, the second fin 122, and the base plate 11 to be integrally formed from an aluminum extrusion profile, thereby improving manufacturing efficiency.

[0064] Specifically, the base plate 11, the first fin 13, the second fin 122, and the first side plate 123 are integrally formed.

[0065] Please see Figure 2 In some embodiments, the frame body 121 further includes two opposing second side plates 124. The second side plates 124 are sandwiched between two first side plates 123. The two second side plates 124 are located at opposite ends of the first side plates 123. Each second side plate 124 is connected to the base plate 11 and the two first side plates 123. In this way, the battery cell 20 can be surrounded by the first side plates 123 and the second side plates 124 to improve the positional stability of the battery cell 20 fixed on the base plate 11.

[0066] In addition, by sandwiching the second side plate 124 between the two first side plates 123, the first side plates 123 can also position and limit the second side plate 124, thereby improving the positional stability of the second side plate 124.

[0067] Please see Figure 2 and Figure 5 In some embodiments, a plurality of second fins 122 are provided on each first surface 125 of the frame body 121 facing away from the mounting cavity 30. The plurality of second fins 122 on each first surface 125 are arranged sequentially in a direction perpendicular to the bearing surface 113, and the surfaces of the second fins 122 on each first surface 125 that are farthest from the bottom plate 11 are flush with the surfaces of the frame body 121 facing away from the bottom plate 11. In this way, the housing 10 can have a larger top surface to cooperate with other components, thereby improving the ease of connection of the housing 10 assembly.

[0068] For example, the battery pack 100 includes a cover that fits onto the side of the frame assembly opposite to the base plate 11. This increases the mating surface between the cover and the housing 10, thereby improving the reliability of the connection between the cover and the housing 10 assembly.

[0069] Please see Figure 3 In some embodiments, the through hole 114 is an oval hole, and the direction of the longest diameter of the through hole 114 is parallel to the first direction. In this way, the thickness of the base plate 11 can be controlled to control the size of the battery pack 100 in the thickness direction of the base plate 11, and the through hole 114 can have a larger area to reduce the flow resistance of the through hole 114 to the heat exchange medium, thereby improving the heat exchange efficiency.

[0070] Please see Figure 1 and Figure 2 In some embodiments, the housing 10 further includes a partition 15. The partition 15 is disposed within the mounting cavity 30 to divide the mounting cavity 30 into a first cavity 31 and a second cavity 32. The first cavity 31 is configured to mount the battery cell 20. The second cavity 32 is configured to mount electrical components. In this way, the battery cell 20 and the electrical components of the battery pack 100 can be separated to reduce interference between the battery cell 20 and the electrical components, thereby improving the operational stability of the battery cell 20 and the electrical components.

[0071] It is understood that the first fin 13 is disposed in the first cavity 31 to divide the first cavity 31 into multiple sub-cavities 311.

[0072] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A box (10), characterized in that, include: A base plate (11) having a bearing surface (113) and a first end face (111) arranged at an angle, the first end face (111) being connected to the bearing surface (113), and having a plurality of through holes (114) on the first end face (111), the plurality of through holes (114) being spaced apart along a first direction and penetrating the base plate (11); and, A frame assembly (12) is located on one side of the base plate (11) and connected to the bearing surface (113) to define a mounting cavity (30); The first direction is parallel to the bearing surface (113) and the first end face (111).

2. The housing (10) according to claim 1, characterized in that, A plurality of first fins (13) are provided in the mounting cavity (30), and each first fin (13) is connected to the base plate (11); In this arrangement, a plurality of the first fins (13) are arranged at intervals to divide the mounting cavity (30) into a plurality of sub-cavities (311), and the sub-cavities (311) are configured to mount the battery cells (20).

3. The housing (10) according to claim 2, characterized in that, The first fin (13) is integrally formed with the base plate (11).

4. The housing (10) according to claim 3, characterized in that, The first fin (13) extends along the extension direction of the through hole (114), and the base plate (11) and the first fin (13) are integrally formed aluminum extrusion profiles.

5. The housing (10) according to claim 2, characterized in that, An adhesive layer (14) is provided on the surface of the bearing surface (113) that defines the sub-cavity (311), and the adhesive layer (14) is configured to bond to the cell (20).

6. The housing (10) according to claim 1, characterized in that, The frame assembly (12) includes a frame body (121) and a plurality of second fins (122). The frame body (121) is connected to the bearing surface (113) to define the mounting cavity (30). The frame body (121) has a first surface (125) facing away from the mounting cavity (30), and the plurality of second fins (122) are disposed on the first surface (125).

7. The housing (10) according to claim 6, characterized in that, The frame body (121) includes two opposing first side plates (123), which are integrally formed with the bottom plate (11).

8. The housing (10) according to claim 7, characterized in that, The first side plate (123) is parallel to the extension direction of the through hole (114), and the second fin (122) connected to the first side plate (123) is parallel to the bearing surface (113). The bottom plate (11), the first side plate (123) and the second fin (122) are integrally formed aluminum extrusion profiles.

9. The housing (10) according to claim 7, characterized in that, The frame body (121) also includes two opposing second side plates (124), which are sandwiched between the two first side plates (123) and are located at both ends of the first side plates (123). Each of the second side plates (124) is connected to the bottom plate (11) and the two first side plates (123).

10. The housing (10) according to any one of claims 6-9, characterized in that, A plurality of second fins (122) are provided on each of the first surfaces (125) of the frame body (121) facing away from the mounting cavity (30). The plurality of second fins (122) on each first surface (125) are arranged sequentially in a direction perpendicular to the bearing surface (113). The surface of the second fin (122) on each first surface (125) that is farthest from the base plate (11) facing away from the base plate (11) is flush with the surface of the frame body (121) facing away from the base plate (11).

11. The housing (10) according to any one of claims 1-9, characterized in that, The through hole (114) is an oval hole, and the direction of the longest diameter of the through hole (114) is parallel to the first direction.

12. The housing (10) according to any one of claims 1-9, characterized in that, The housing (10) also includes a partition (15) disposed in the mounting cavity (30) to divide the mounting cavity (30) into a first cavity (31) and a second cavity (32). The first cavity (31) is configured to install the battery cell (20), and the second cavity (32) is configured to install electrical components.

13. A battery pack (100), characterized in that, include: Multiple battery cells (20); as well as The housing (10) as described in any one of claims 1-12; The plurality of battery cells (20) are all disposed in the mounting cavity (30).

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