Battery box and battery pack

Abstract

The utility model discloses a battery box and battery pack belong to battery technical field. The utility model discloses a battery box and battery pack, the battery compartment for installing battery group is formed between first cover and bottom plate, the electrical compartment for installing electrical element is formed between second cover, end plate and bottom plate, not only simple structure, easy to assemble, and part second cover and first cover overlap setting, and then can make first cover and second cover support each other, guarantee the sealing property and the structural strength of battery box satisfy the demand. At the same time, first cover and second cover split setting can respectively to first cover and second cover carry out independent dismounting, to improve the convenience of assembly and later -stage maintenance.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery box and battery pack. Background Technology

[0002] In related technologies, battery packs typically have a battery compartment and an electrical compartment within their casing. The battery pack is housed in the battery compartment, while the electrical components are housed in the electrical compartment, which helps improve the safety of the battery pack. However, in existing casings, the electrical compartment has a complex structure and many components, leading to assembly difficulties and reducing the assembly efficiency of the battery casing. Utility Model Content

[0003] The purpose of this utility model is to provide a battery box and battery pack that can simplify the structure of the battery box and improve assembly convenience.

[0004] To achieve the above objectives, the following technical solution is provided:

[0005] Battery housing, including:

[0006] A first cover and a base plate, wherein the first cover is connected to the base plate to form a battery compartment for installing a battery pack;

[0007] The second cover and the end plate are fixed to one end of the base plate along a first direction. The second cover includes a first end and a second end that are disposed opposite to each other along the first direction. The first end overlaps with the first cover, and the second end is connected to the end plate. The second cover is also connected to the base plate to form an electrical compartment for installing electrical components.

[0008] To achieve the above objectives, a battery pack is also provided, including the battery housing as described above.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] The battery housing of this utility model has a battery compartment for installing battery packs formed between the first cover and the base plate, and an electrical compartment for installing electrical components formed between the second cover, the end plate, and the base plate. This design is not only simple in structure and easy to assemble, but also allows the second cover to partially overlap with the first cover, thus enabling them to support each other and ensuring the battery housing's sealing and structural strength meet requirements. Furthermore, the separate design of the first and second covers allows for independent assembly and disassembly, improving the convenience of assembly and subsequent maintenance.

[0011] The battery pack of this utility model, by applying the above-mentioned battery box, not only has a simple structure and is easy to assemble, but also has better sealing and structural strength, and improves the convenience of battery pack assembly and subsequent maintenance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the battery box structure in an embodiment of the present invention;

[0013] Figure 2 This is a partial structural diagram of the battery box in an embodiment of the present invention;

[0014] Figure 3 This is a schematic diagram of the structure of the second cover in an embodiment of the present utility model;

[0015] Figure 4 This is a schematic diagram of the first structure of the end plate in an embodiment of this utility model;

[0016] Figure 5 This is a schematic diagram of the second structure of the end plate in an embodiment of this utility model.

[0017] Figure label:

[0018] 1. Base plate; 11. Bottom flange; 2. First cover; 3. Second cover; 3a. First end; 3b. Second end; 4. End plate; 4a. First surface; 4a1. Groove; 4b. Second surface; 4b1. Protrusion; 41. Cavity; 42. End flange; 5. First seal; 6. Second seal; 71. First riveting assembly; 72. Second riveting assembly; 73. Third riveting assembly; 74. Fourth riveting assembly. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" 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 or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] like Figures 1 to 5As shown, this embodiment provides a battery housing and a battery pack. The battery pack includes a battery housing, a battery pack, and electrical components, with the electrical components electrically connected to the battery pack. The battery housing includes a base plate 1, a first cover 2, a second cover 3, and an end plate 4. The first cover 2 is connected to the base plate 1 to form a battery compartment, in which the battery pack is installed. The end plate 4 is fixed to one end of the base plate 1 along a first direction. The second cover 3 includes a first end 3a and a second end 3b arranged opposite each other along the first direction. The first end 3a overlaps with the first cover 2, and the second end 3b is connected to the end plate 4. The second cover 3 is also connected to the base plate 1 to form an electrical compartment for installing electrical components.

[0027] In this embodiment, the battery housing has a battery compartment for mounting the battery pack formed between the first cover 2 and the base plate 1, and an electrical compartment for mounting electrical components formed between the second cover 3, the end plate 4, and the base plate 1. This design is not only simple in structure and easy to assemble, but also allows the second cover 3 to partially overlap with the first cover 2, enabling them to support each other and ensuring the battery housing's sealing and structural strength meet requirements. Furthermore, the separate design of the first cover 2 and the second cover 3 allows for independent assembly and disassembly, improving the convenience of battery pack assembly and subsequent maintenance.

[0028] It should be noted that multiple battery cells (such as multiple battery cells with equal capacity and internal resistance) are connected in series or parallel to form a battery pack. A battery pack is a complete functional unit that can directly output electrical energy, consisting of the battery pack, battery management system (BMS), thermal management system, electrical connection system (high-voltage / low-voltage connectors, wiring harnesses, etc.), structural components (casing, brackets, etc.), and protective components, all housed and sealed within a battery enclosure. The battery pack, as a rechargeable battery, is the power source for new energy vehicles.

[0029] A battery enclosure refers to a closed or semi-closed structure made of materials such as metal and plastic. The enclosure provides installation space for components such as the battery pack, BMS, thermal management system, and electrical connection system, serving as the physical carrier for these components. Through a well-designed structure, these components are secured within the enclosure, ensuring their relatively stable position during battery pack operation and preventing damage or loosening due to vibration, impact, or other factors. The design and manufacture of the battery enclosure must meet the safety, reliability, and functionality requirements of the battery pack under different usage scenarios.

[0030] In this embodiment, the end plate 4 is connected to one end of the base plate 1 along the first direction. The first cover 2 and the second cover 3 are both fastened to the base plate 1. The two ends of the second cover 3 along the first direction are respectively connected to the first cover 2 and the end plate 4 to form a battery box. That is to say, after the battery box is assembled, a closed installation space is formed inside the battery box. The base plate 1, the first cover 2, the second cover 3 and the end plate 4 together define the installation space, which includes the battery compartment and the electrical compartment.

[0031] The battery casing can be cast from materials such as steel plates and aluminum alloys, or it can be made from lightweight materials (such as glass fiber reinforced composite materials or carbon fiber reinforced composite materials).

[0032] The battery box can be cylindrical, cuboid, or cube, etc.

[0033] like Figure 2 As shown, in this embodiment, the end where the first cover 2 connects to the second cover 3 is open. This means that after the battery box is assembled, the battery compartment and the electrical compartment are connected, which simplifies the structure of the battery box and improves assembly convenience. Of course, in other embodiments, the end where the first cover 2 connects to the second cover 3 can be closed. This means that after the battery box is assembled, the battery compartment and the electrical compartment are isolated from each other, which can alleviate the heat transfer between the battery compartment and the electrical compartment when the battery pack is working or experiencing thermal runaway, thus improving the safety of the battery pack.

[0034] Optionally, such as Figure 1 and Figure 2 As shown, one end of the second cover 3 along the first direction is fitted onto the outside of the first cover 2. Thus, during battery pack assembly, the second cover 3 can be assembled later than the first cover 2, which is more in line with the battery pack assembly sequence and helps to improve the assembly convenience of the battery pack. During the use of the battery pack, the electrical components in the electrical compartment need to be maintained more frequently. By adopting the above setting, the ease of disassembling and assembling the second cover 3 can be improved, thereby improving the convenience of battery pack use and subsequent maintenance.

[0035] Optionally, the second cover 3 is sleeved on the outside of the end plate 4 at one end opposite to the first cover 2 along the first direction, which facilitates the quick disassembly and assembly of the second cover 3 during the use of the battery pack for maintenance of electrical components, thereby improving the convenience of battery pack use and subsequent maintenance.

[0036] Optionally, along the first direction, the overlap width between the second cover 3 and the first cover 2 is 'a', in mm, where 'a' ≥ 50 mm. It should be noted that due to the limited thickness of the first cover 2 and the second cover 3, when the battery pack is under harsh conditions such as vibration, if the overlap width between the second cover 3 and the first cover 2 along the first direction is small, problems such as collapse or deformation may occur at the connection between the first cover 2 and the second cover 3, thus affecting the sealing performance of the battery box. By ensuring that the overlap width 'a' between the second cover 3 and the first cover 2 along the first direction is ≥ 50 mm, the structural strength at the connection between the first cover 2 and the second cover 3 can be improved, which is beneficial to improving the sealing performance of the battery box.

[0037] Optionally, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the end plate 4 is provided with a cavity 41 that communicates with the electrical compartment, so that some electrical components in the electrical compartment can be accommodated in the cavity 41. This is equivalent to expanding the accommodating space of the electrical compartment through the cavity 41, and also improving the structural compactness of the battery box.

[0038] Specifically, the end plate 4 includes a first surface 4a and a second surface 4b disposed opposite to each other along a first direction. That is, along the first direction, the first surface 4a faces the electrical compartment, and the second surface 4b faces away from the electrical compartment. The end plate 4 protrudes from the first surface 4a toward the second surface 4b to form a protrusion 4b1 on the second surface 4b, and a groove 4a1 is formed on the first surface 4a opposite to the protrusion 4b1. This groove 4a1 is the aforementioned cavity 41. This arrangement improves the structural compactness of the battery housing.

[0039] Optionally, such as Figure 2 As shown, a first sealing element 5 is provided between the first cover 2 and the second cover 3, thereby improving the sealing performance of the battery box to ensure the reliability and safety of the battery pack.

[0040] For example, the first sealing element 5 includes a first sealing strip, which is arranged around the outside of the first cover 2 in a first direction. When one end of the second cover 3 is sleeved on the outside of the first cover 2, the second cover 3 and the first cover 2 clamp the first sealing strip to ensure the sealing effect.

[0041] For example, the first sealing element 5 is fixed to the outside of the first cover 2 by adhesive bonding to improve the installation stability and sealing effect of the first sealing element 5. Of course, in other embodiments, a first groove 4a1 can also be provided on the outside of the first cover 2, and the first sealing element 5 can be disposed in the first groove 4a1, which can also improve the installation stability and sealing effect of the first sealing element 5.

[0042] Optionally, a second sealing element 6 is provided between the second cover 3 and the end plate 4 to improve the sealing performance of the battery box and ensure the reliability and safety of the battery pack.

[0043] For example, the second sealing element 6 includes a second sealing strip, which is arranged around the outside of the end plate 4 in a first direction. When the second cover 3 is sleeved on the outside of the end plate 4 at one end away from the first cover 2 in the first direction, the second cover 3 and the end plate 4 clamp the first sealing strip to ensure the sealing effect.

[0044] For example, the second seal 6 is fixed to the outer side of the end plate 4 by adhesive bonding to improve the installation stability and sealing effect of the second seal 6. Of course, in other embodiments, a second groove 4a1 can also be provided on the outer side of the end plate 4, and the second seal 6 can be disposed in the second groove 4a1, which can also improve the installation stability and sealing effect of the second seal 6.

[0045] Optionally, the first sealing element 5 is flush with the end face of the first end 3a, thereby preventing external dust, moisture, etc. from entering the gap between the first cover 2 and the second cover 3, which can improve the sealing effect of the battery box.

[0046] Optionally, the second seal 6 is flush with the end face of the second end 3b, thereby preventing external dust, moisture, etc. from entering the gap between the end cover 4 and the second cover 3, which can improve the sealing effect of the battery box.

[0047] Optionally, the end plate 4 is provided with a mounting portion for installing electrical components, thereby eliminating the need for separate mounting brackets or other mounting structures for the electrical components, improving the ease of installation of the electrical components, and increasing the space utilization within the battery box. For example, the mounting portion can be a boss, through hole, wire clamp, or other structures, and is not limited thereto.

[0048] Optionally, such as Figure 1 and Figure 2 As shown, the base plate 1 is provided with a connecting part; the first cover 2 and the connecting part are fixedly connected by the first riveting assembly 71. That is to say, the first cover 2 and the connecting part are fixedly connected by riveting, which not only improves the connection stability between the first cover 2 and the connecting part, but also requires only a small space to complete the riveting operation, which can reduce the space occupied in the battery box and improve the space utilization rate in the battery box; it also has the effect of convenient operation, which can improve the assembly convenience of the battery box.

[0049] Optionally, the connecting part includes a bottom flange 11, which is located on the side of the base plate 1 facing the first cover 2. It is understood that the bottom flange 11 has a small thickness, which can improve the connection between the base plate 1 and the first cover 2, the second cover 3 and the end plate 4 while ensuring that the structural strength meets the requirements, and is conducive to improving the space utilization of the battery box.

[0050] Specifically, the bottom flange 11 is connected end to end on the edge of the base plate 1. In other words, the bottom flange 11 has a ring structure, which ensures the sealing of the battery box.

[0051] Optionally, multiple first riveting assemblies 71 are provided, and the multiple first riveting assemblies 71 are spaced apart, thereby improving the connection stability between the first cover 2 and the connecting part.

[0052] Optionally, the first cover 2 is fitted onto the outside of the connecting part, thereby preventing the connecting part from being exposed and improving the sealing performance of the battery box.

[0053] Furthermore, the first riveting assembly 71 includes a first riveting bolt and a first nut. One end of the first riveting bolt is located at the connecting part, and the other end passes through the first cover 2 and is threadedly connected to the first nut. Specifically, the first cover 2 has a first through hole, and the other end of the first riveting bolt passes through the first through hole and is locked by the first nut. This improves the convenience of the riveting operation, thereby increasing assembly efficiency, and also improves the reliability of the connection between the connecting part and the first cover 2.

[0054] Optionally, the second cover 3 and the connecting part are fixedly connected by the second riveting assembly 72. That is to say, the second cover 3 and the connecting part are fixedly connected by riveting, which not only improves the connection stability between the second cover 3 and the connecting part, but also requires only a small space to complete the riveting operation, which can reduce the space occupied in the battery box and improve the space utilization rate in the battery box; it also has the effect of convenient operation, which can improve the assembly convenience of the battery box.

[0055] Optionally, multiple second riveting assemblies 72 are provided, and the multiple second riveting assemblies 72 are spaced apart, thereby improving the connection stability between the second cover 3 and the connecting part.

[0056] Optionally, the second cover 3 is fitted onto the outside of the connecting part, thereby preventing the connecting part from being exposed and improving the sealing performance of the battery box.

[0057] Furthermore, the second riveting assembly 72 includes a second riveting bolt and a second nut. One end of the second riveting bolt is located at the connecting part, and the other end passes through the second cover 3 and is threadedly connected to the second nut. Specifically, the second cover 3 has a second through hole, and the other end of the second riveting bolt passes through the second through hole and is locked by the second nut. This improves the convenience of the riveting operation, increases assembly efficiency, and enhances the reliability of the connection between the connecting part and the second cover 3.

[0058] Optionally, the end plate 4 and the connecting part are fixedly connected by the third riveting assembly 73. That is to say, the end plate 4 and the connecting part are fixedly connected by riveting, which not only improves the connection stability between the end plate 4 and the connecting part, but also requires only a small space to complete the riveting operation, which can reduce the space occupied in the battery box and improve the space utilization rate in the battery box; it also has the effect of convenient operation, which can improve the assembly convenience of the battery box.

[0059] Optionally, multiple third riveting assemblies 73 are provided, and the multiple third riveting assemblies 73 are spaced apart, thereby improving the connection stability between the end plate 4 and the connecting part.

[0060] Optionally, the end plate 4 is located on the side of the connection part away from the electrical compartment, which can prevent the connection part from being exposed and help improve the sealing of the battery box.

[0061] Furthermore, the third riveting assembly 73 includes a third riveting bolt and a third nut. One end of the third riveting bolt is located at the connecting part, and the other end passes through the end plate 4 and is threadedly connected to the third nut. Specifically, the end plate 4 is provided with a third through hole, and the other end of the third riveting bolt passes through the third through hole and is locked by the third nut. This improves the convenience of riveting operations, thereby increasing assembly efficiency, and also improves the reliability of the connection between the connecting part and the end plate 4.

[0062] Optionally, the end plate 4 and the second cover 3 are fixedly connected by a fourth riveting assembly 74. That is, the end plate 4 and the second cover 3 are fixedly connected by riveting, which not only improves the connection stability between the end plate 4 and the second cover 3, but also requires only a small space to complete the riveting operation, which can reduce the space occupied in the battery box and improve the space utilization rate in the battery box; it also has the effect of convenient operation, which can improve the assembly convenience of the battery box.

[0063] Optionally, multiple fourth rivet assemblies 74 are provided, and the multiple fourth rivet assemblies 74 are spaced apart, thereby improving the connection stability between the end plate 4 and the second cover 3.

[0064] Furthermore, the fourth riveting assembly 74 includes a fourth riveting bolt and a fourth nut. One end of the fourth riveting bolt is disposed on the end plate 4, and the other end passes through the second cover 3 and is threadedly connected to the fourth nut. Specifically, the second cover 3 also has a fourth through hole, through which the other end of the fourth riveting bolt passes and is locked by the fourth nut. This improves the convenience of the riveting operation, thereby increasing assembly efficiency, and also enhances the reliability of the connection between the end plate 4 and the second cover 3.

[0065] Optionally, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the end plate 4 has an end flange 42, and the fourth riveting assembly 74 fixes the end flange 42 to the second cover 3. Specifically, the fourth riveting bolt is located on the end flange 42. By making the end flange 42 abut against the second cover 3, the contact area between the end plate 4 and the second cover 3 is increased, which helps to improve the reliability of the connection between the end plate 4 and the second cover 3. At the same time, it also helps to improve the convenience of the riveting operation.

[0066] In summary, the second cover 3 overlaps with the first cover 2 at one end along the first direction, and is riveted to the end plate 4 at the other end along the first direction. The second cover 3 is also riveted to the bottom flange 11 of the base plate 1. In other words, by making the second cover 3 overlap with the first cover 2 at one end along the first direction, the reliability of the connection between the second cover 3 and the first cover 2 can be guaranteed. There is no need to set up fastening structures such as riveting components between the second cover 3 and the first cover 2, which can improve the assembly convenience of the battery box.

[0067] For example, the assembly method of the battery box in this embodiment includes the following steps:

[0068] The first cover 2 is fastened to the base plate 1, and the first cover 2 is fixedly connected to the flip plate by the first rivet assembly 71.

[0069] The end plate 4 is placed on the end of the base plate 1 away from the first cover 2 along the first direction, and the end plate 4 is fixedly connected to the flip plate by the third rivet assembly 73.

[0070] The first seal 5 is installed on the outer side of the first cover 2 along the first direction near the second cover 3. The second seal 6 is installed on the outer side of the end plate 4.

[0071] One end of the second cover 3 along the first direction is fitted onto the outside of the first cover 2, and the other end of the second cover 3 along the first direction is fitted onto the outside of the end plate 4. The second cover 3 is fixedly connected to the bottom flange 11 by the second rivet assembly 72, and the second cover 3 is fixedly connected to the end plate 4 by the fourth rivet assembly 74. Thus, the first sealing member 5 is sandwiched between the first cover 2 and the second cover 3, and the second sealing member 6 is sandwiched between the second cover 3 and the end plate 4 to ensure the sealing of the battery box.

[0072] The battery pack of this embodiment, by applying the aforementioned battery housing, has corresponding functions and beneficial effects.

[0073] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A battery housing, characterized in that, include: A first cover (2) and a base plate (1), wherein the first cover (2) is connected to the base plate (1) to form a battery compartment for installing a battery pack; The second cover (3) and the end plate (4) are fixed to one end of the base plate (1) along a first direction. The second cover (3) includes a first end (3a) and a second end (3b) arranged opposite to each other along the first direction. The first end (3a) overlaps with the first cover (2). The second end (3b) is connected to the end plate (4). The second cover (3) is also connected to the base plate (1) and forms an electrical compartment for installing electrical components.

2. The battery housing according to claim 1, characterized in that, The end plate (4) is provided with a cavity (41) that communicates with the electrical compartment.

3. The battery housing according to claim 1, characterized in that, A first sealing element (5) is provided between the first cover (2) and the second cover (3); And / or, a second seal (6) is provided between the second cover (3) and the end plate (4).

4. The battery housing according to claim 3, characterized in that, The first sealing element (5) is flush with the end face of the first end (3a); And / or, the second seal (6) is flush with the end face of the second end (3b).

5. The battery housing according to claim 1, characterized in that, The second cover (3) is fitted onto the outside of the first cover (2) at one end along the first direction.

6. The battery housing according to claim 1, characterized in that, Along the first direction, the width of overlap between the second cover (3) and the first cover (2) is a, where a (mm) ≥ 50 (mm).

7. The battery housing according to claim 1, characterized in that, The end plate (4) is provided with a mounting section for installing electrical components.

8. The battery housing according to claim 1, characterized in that, The base plate (1) is provided with a connecting part; the first cover (2) is fixedly connected to the connecting part by a first rivet assembly (71).

9. The battery housing according to claim 8, characterized in that, The first cover (2) is sleeved on the outside of the connecting part; the first rivet assembly (71) includes a first rivet bolt and a first nut, one end of the first rivet bolt is located at the connecting part, and the other end passes through the first cover (2) and is threadedly connected to the first nut.

10. The battery housing according to claim 1, characterized in that, The base plate (1) is provided with a connecting part; the second cover (3) is fixedly connected to the connecting part by a second rivet assembly (72).

11. The battery housing according to claim 10, characterized in that, The second cover (3) is sleeved on the outside of the connecting part; the second rivet assembly (72) includes a second rivet bolt and a second nut, one end of the second rivet bolt is located at the connecting part, and the other end passes through the second cover (3) and is threadedly connected to the second nut.

12. The battery housing according to claim 1, characterized in that, The base plate (1) is provided with a connecting part; the end plate (4) is fixedly connected to the connecting part by a third rivet assembly (73).

13. The battery housing according to claim 12, characterized in that, The end plate (4) is located on the side of the connecting part away from the electrical compartment; the third rivet assembly (73) includes a third rivet bolt and a third nut, one end of the third rivet bolt is located in the connecting part, and the other end passes through the end plate (4) and is threadedly connected to the third nut.

14. The battery housing according to any one of claims 1-13, characterized in that, The end plate (4) and the second cover (3) are fixedly connected by the fourth rivet assembly (74).

15. The battery housing according to claim 14, characterized in that, The second cover (3) is sleeved on the outside of the end plate (4); the fourth rivet assembly (74) includes a fourth rivet bolt and a fourth nut, one end of the fourth rivet bolt is disposed on the end plate (4), and the other end passes through the second cover (3) and is threadedly connected to the fourth nut.

16. The battery housing according to any one of claims 8-13, characterized in that, The connecting part includes a bottom flange (11), which is located on the side of the bottom plate (1) facing the first cover (2).

17. A battery pack, characterized in that, Includes the battery housing as described in any one of claims 1-10.

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