Battery box body and battery box
By introducing a composite support plate and cover plate matching structure into the battery box, combined with support beams and sealing structure, the problems of insufficient rigidity and poor sealing in the existing battery box structure are solved, achieving lightweight design and cell safety protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-04-07
AI Technical Summary
In the existing CTV battery box structure, welding sheet metal support components on the box cover is difficult and the effect is not obvious. Furthermore, the support under the box cover is prone to causing deformation of the aluminum shell of the battery cell, which reduces the cycle life of the battery cell.
The structure design, which combines a composite support plate with a cover plate, along with a sealing structural adhesive and a support beam, enhances the rigidity and sealing performance of the upper cover. The connection is achieved through fasteners and a hollow structure, which reduces weight and increases mechanical strength.
It effectively improves the rigidity and sealing performance of the battery box, reduces the safety risks of the battery cells, protects the battery cells from mechanical damage and contamination, and extends the service life of the battery box.
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Figure CN224096889U_ABST
Abstract
Description
Technical Field
[0001] This application relates to a battery box and a battery housing, belonging to the field of new energy battery technology. Background Technology
[0002] With the rapid development of electric vehicles, energy storage systems and other fields, batteries, as core components, are of paramount importance in terms of safety and reliability.
[0003] In conceiving and implementing this application, the applicant discovered at least the following problems: Current CTV battery box structures are basically achieved by adding a support structure below the box cover or welding sheet metal above the box cover. Welding sheet metal support components onto the box cover is difficult due to the box cover's thin-walled nature, resulting in poor welding performance. Supports below the box cover typically rely on the battery cells as bases, which can easily cause deformation of the aluminum casing, squeezing the coiled core beneath the casing, leading to reduced cycle life or other abnormalities in the battery cells.
[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content
[0005] This application provides a battery box and a battery case, which improves the rigidity of the upper cover of the battery box and reduces the safety risks to the battery cells caused by long-term stepping.
[0006] This application provides a battery housing, including:
[0007] The lower housing has an opening;
[0008] The upper box cover includes a cover plate and a composite support plate. The cover plate is installed on the opening through an opening, and the composite support plate is installed on the cover plate and located on the side of the cover plate away from the lower box body.
[0009] The beneficial effects of this application are: by setting up the composite support plate, the weight of the battery box is effectively reduced while maintaining high mechanical strength, the rigidity of the upper cover in the battery box is improved, the safe gap between the upper cover and the cell electrode plates inside the battery box is ensured, and the safety risk of the CTV battery box to the cells during long-term trampling is reduced.
[0010] In some alternative embodiments, the composite support plate has a first mounting surface and the cover plate has a second mounting surface, with the first mounting surface facing the second mounting surface;
[0011] The structural shape of the first mounting surface matches the structural shape of the second mounting surface.
[0012] It should be noted that, because the structural shapes of the first and second mounting surfaces match, this design ensures a tight fit between the composite support plate and the cover plate, which helps to improve the sealing performance between the cover plate and the composite support plate, preventing moisture, dust or other contaminants from entering the battery box and protecting the safety and performance of the battery cells.
[0013] In some alternative embodiments, the battery housing also includes a sealing structural adhesive, which connects the first mounting surface and the second mounting surface.
[0014] It should be noted that the structural sealant, filled between the first and second mounting surfaces, provides a seal, preventing moisture, dust, and other contaminants from entering the battery housing and protecting the safety and performance of the battery cells. In addition to its sealing function, the structural sealant also increases the bond strength between the composite support plate and the cover plate, enhancing the overall structural stability and durability.
[0015] In some alternative embodiments, the battery housing also includes a support beam disposed on the cover plate and located on the side of the cover plate away from the composite support plate.
[0016] It should be noted that the support beam helps to improve the cover plate's resistance to deformation, increases the cover plate's structural rigidity, and enhances the overall strength of the battery box, enabling it to better withstand external pressure and mechanical stress, and prevent deformation caused by mechanical loads or thermal expansion during use, thereby maintaining the shape stability of the battery box.
[0017] In some alternative implementations, there are at least two support beams;
[0018] At least two support beams are staggered on the cover plate.
[0019] It should be noted that by staggering the support beams, the load applied to the cover plate can be more effectively distributed and transferred, which can effectively enhance the torsional resistance of the cover plate, reduce local stress concentration, and prevent deformation or damage caused by external torque during use.
[0020] In some alternative embodiments, the support beam has a mounting portion that protrudes toward and is disposed on the cover plate.
[0021] It should be noted that the design of the hollow structure mounting section and fasteners makes the connection between the composite support plate, cover plate and support beam more secure and easier to disassemble, which facilitates the installation and maintenance of the battery box.
[0022] In some alternative implementations, the mounting section is a hollow structure;
[0023] The battery housing also includes fasteners that pass through the composite support plate, the cover plate, and the mounting part in sequence to connect the composite support plate, the cover plate, and the support beam.
[0024] At least some of the fasteners are located inside the mounting section.
[0025] It should be noted that the hollow structure of the mounting section effectively reduces the weight of the support beam while maintaining the necessary strength and rigidity, contributing to the lightweight design of the overall battery box. Fasteners pass through the composite support plate, cover plate, and mounting section, firmly connecting these components together, providing a high-strength mechanical connection and enhancing the stability of the overall structure.
[0026] In some alternative embodiments, the battery housing also includes a seal fitted onto a fastener and located between the composite support plate and the cover plate.
[0027] It should be noted that the sealing element provides additional sealing protection, preventing moisture, dust, and other contaminants from entering the battery housing through the gaps in the fasteners, thereby protecting the safety and performance of the internal battery cells.
[0028] In some alternative implementations, the composite support plate is a honeycomb support plate.
[0029] It should be noted that the honeycomb structure can effectively absorb and disperse external impact energy, providing excellent impact resistance and protecting the internal battery cells from mechanical damage.
[0030] In addition, this application also provides a battery box, including the battery box body described above.
[0031] The battery box and battery case provided in this application, the battery case includes a battery box body; the battery box body includes: a lower box body with an opening; an upper box cover, the upper box cover includes a cover plate and a composite support plate, the cover plate is disposed on the opening through the opening, and the composite support plate is disposed on the cover plate and located on the side of the cover plate away from the lower box body.
[0032] By using a composite support plate, the weight of the battery box is effectively reduced while maintaining high mechanical strength. This improves the rigidity of the upper cover of the battery box, ensures a safe gap between the upper cover and the cell electrode plates inside the battery box, and reduces the safety risks to the cells caused by long-term trampling of the CTV battery box. Attached Figure Description
[0033] The above and other objects, features, and advantages of embodiments of this application will become more readily understood through the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application will be described by way of example and non-limitation, wherein:
[0034] Figure 1This is a schematic diagram of the battery housing according to an embodiment of this application;
[0035] Figure 2 This is an exploded view of the battery box according to an embodiment of this application;
[0036] Figure 3 This is a schematic diagram of the composite support plate in the battery box according to an embodiment of this application;
[0037] Figure 4 This is a cross-sectional view of the composite support plate in the battery box according to an embodiment of this application;
[0038] Figure 5 This is a schematic diagram of the lower casing of the battery housing according to an embodiment of this application;
[0039] Figure 6 This is a schematic diagram of the assembly of the upper cover and the support beam in the battery box body according to an embodiment of this application;
[0040] Figure 7 This is a cross-sectional view of the assembly of the upper cover and the support beam in the battery box of this application embodiment.
[0041] Figure label:
[0042] 100 - Battery housing;
[0043] 110-lower box;
[0044] 120 - Top cover;
[0045] 121 - Cover plate;
[0046] 1211 - Second mounting surface;
[0047] 122-Composite support plate;
[0048] 1221 - First mounting surface;
[0049] 130 - Support beam;
[0050] 131-Installation Department;
[0051] 140 - Fasteners;
[0052] 150 - Seal. Detailed Implementation
[0053] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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, 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. All other obtained embodiments are within the scope of protection of this application. In the absence of conflict, the following embodiments and features can be combined with each other.
[0054] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0055] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0057] In conceiving and implementing this application, the applicant discovered at least the following problems: Current CTV battery box structures are basically achieved by adding a support structure below the box cover or welding sheet metal above the box cover. Welding sheet metal support components onto the box cover is difficult due to the box cover's thin-walled nature, resulting in poor welding performance. Supports below the box cover typically rely on the battery cells as bases, which can easily cause deformation of the aluminum casing, squeezing the coiled core beneath the casing, leading to reduced cycle life or other abnormalities in the battery cells.
[0058] The battery box proposed in this application effectively reduces the weight of the battery box by setting up a composite support plate, while maintaining high mechanical strength. This improves the rigidity of the upper cover of the battery box, ensures a safe gap between the upper cover and the cell electrode plates inside the battery box, and reduces the safety risk to the cells caused by long-term trampling of the CTV battery box.
[0059] The battery housing provided in this application will be described in detail below with reference to specific embodiments.
[0060] Figure 1 This is a schematic diagram of the battery box structure according to an embodiment of this application. Figure 2 This is an exploded view of the battery box according to an embodiment of this application.
[0061] like Figure 1 and Figure 2 As shown in the figure, this application embodiment proposes a battery housing 100, including:
[0062] The lower housing 110 has an opening;
[0063] The upper box cover 120 includes a cover plate 121 and a composite support plate 122. The cover plate 121 is provided at the opening through the opening, and the composite support plate 122 is provided on the cover plate 121 and is located on the side of the cover plate 121 away from the lower box body 110.
[0064] It should be noted that the cover plate 121 is provided at the opening through the opening, and the upper cover 120 and the lower box body 110 can form a receiving cavity to accommodate the battery module.
[0065] The dimensions of the battery housing 100 can be set according to actual needs, and this embodiment of the application does not impose any restrictions on them.
[0066] Additionally, it should be noted that this embodiment does not limit the shape of the upper cover 120 and the lower box 110. For example, the battery box 100 can be a regular shape such as a cuboid or a cylinder, and of course, the box can also be other irregular shapes.
[0067] In one possible implementation, the battery housing 100 can be a rectangular structure, and the size of the battery housing 100 can be greater than or equal to the size of the battery module, so that the battery housing 100 can support the battery module.
[0068] It should be noted that by setting a composite support plate 122 on the cover plate 121, the overall strength and rigidity of the upper cover 120 are increased. This design can effectively resist external pressure and impact, protecting the internal battery cells.
[0069] The composite support plate 122 is typically made of lightweight materials, such as carbon fiber composites or glass fiber composites. This material choice significantly reduces the weight of the battery housing 100 while enhancing strength, thereby improving overall energy efficiency.
[0070] In addition, the use of composite support plate 122 helps to provide an extra layer of protection in the event of a collision or other accident, reducing the risk of battery damage and thus improving the safety of battery housing 100.
[0071] Furthermore, composite materials typically possess excellent thermal properties, which can help better manage the temperature within the battery housing 100, prevent overheating, and improve battery performance and lifespan. Composite materials also typically exhibit excellent corrosion resistance, remaining stable in harsh environments and extending the service life of the battery housing 100.
[0072] Through the above-mentioned configuration, namely the composite support plate 122, the weight of the battery box 100 is effectively reduced while maintaining high mechanical strength. This improves the rigidity of the upper cover 120 in the battery box 100, ensures a safe gap between the upper cover 120 and the cell electrode plates inside the battery box 100, and reduces the safety risk to the cells caused by long-term stepping on the CTV battery box.
[0073] Figure 3 This is a schematic diagram of the composite support plate in the battery box according to an embodiment of this application. Figure 4 This is a cross-sectional view of the composite support plate in the battery box of an embodiment of this application.
[0074] like Figures 1 to 4 As shown, in some optional embodiments, the composite support plate 122 has a first mounting surface 1221 and the cover plate 121 has a second mounting surface 1211, with the first mounting surface 1221 facing the second mounting surface 1211.
[0075] The structural shape of the first mounting surface 1221 matches the structural shape of the second mounting surface 1211.
[0076] It should be noted that, since the structural shapes of the first mounting surface 1221 and the second mounting surface 1211 are matched, this design ensures a tight fit between the composite support plate 122 and the cover plate 121, which helps to improve the sealing performance between the cover plate 121 and the composite support plate 122, preventing moisture, dust or other contaminants from entering the battery case 100 and protecting the safety and performance of the battery cell.
[0077] In addition, the matching first mounting surface 1221 and second mounting surface 1211 can effectively disperse and evenly distribute the external loads and stresses applied to the upper cover 120, reduce stress concentration, and lower the risk of structural damage.
[0078] In some embodiments, the first mounting surface 1221 adopts a conformal design according to the shape of the second mounting surface 1211, which is more conducive to adhesive bonding with the cover plate 121.
[0079] In some alternative embodiments, the battery housing 100 also includes a sealing structural adhesive, which connects the first mounting surface 1221 and the second mounting surface 1211.
[0080] It should be noted that the sealing adhesive, filled between the first mounting surface 1221 and the second mounting surface 1211, provides a seal, preventing moisture, dust, and other contaminants from entering the battery housing 100 and protecting the safety and performance of the battery cells. The sealing adhesive not only provides a sealing function but also increases the bonding strength between the composite support plate 122 and the cover plate 121, enhancing the stability and durability of the overall structure.
[0081] In addition, the sealing adhesive has a certain degree of elasticity and cushioning properties, which can effectively absorb and mitigate external vibrations and impacts, further protecting the battery cells from mechanical damage.
[0082] Furthermore, the sealing structural adhesive can fill the minute gap between the first mounting surface 1221 and the second mounting surface 1211, compensate for tolerances in the manufacturing and assembly process, and ensure a tight fit.
[0083] Figure 5 This is a schematic diagram of the lower casing of the battery box according to an embodiment of this application. Figure 6 This is a schematic diagram of the assembly of the upper cover and the support beam in the battery box of this application embodiment.
[0084] like Figures 2 to 6 As shown, in some alternative embodiments, the battery housing 100 further includes a support beam 130 disposed on the cover plate 121 and located on the side of the cover plate 121 away from the composite support plate 122.
[0085] It should be noted that the setting of the support beam 130 helps to improve the deformation resistance of the cover plate 121, improves the structural rigidity of the cover plate 121, and enhances the overall strength of the battery box 100, so that it can better withstand external pressure and mechanical stress, prevent deformation caused by mechanical load or thermal expansion during use, and thus maintain the shape stability of the battery box 100.
[0086] Furthermore, the support beam 130 can effectively distribute and transfer the load applied to the cover plate 121, reducing local stress concentration and lowering the risk of structural damage. The support beam 130 not only increases the rigidity of the structure but also improves the vibration resistance of the battery box 100, reducing the impact of vibration on the battery cells and extending their service life.
[0087] like Figure 6 As shown, in some alternative embodiments, there are at least two support beams 130;
[0088] At least two support beams 130 are staggered on the cover plate 121.
[0089] It should be noted that, through the staggered arrangement, the support beams 130 can more effectively distribute and transfer the load applied to the cover plate 121, which can effectively enhance the torsional resistance of the cover plate 121, reduce local stress concentration, and prevent deformation or damage caused by external torque during use.
[0090] The staggered support beams 130 form a grid-like or cross-shaped support structure. This layout can distribute the load more evenly and significantly improve the overall strength and rigidity of the cover plate 121.
[0091] Figure 7 This is a cross-sectional view of the assembly of the upper cover and the support beam in the battery box of this application embodiment.
[0092] like Figures 5 to 7 As shown, in some alternative embodiments, the support beam 130 has a mounting portion 131 that protrudes toward and is disposed on the cover plate 121.
[0093] It should be noted that the design of the hollow structure mounting part 131 and fastener 140 makes the connection between the composite support plate 122, the cover plate 121 and the support beam 130 more secure and easier to disassemble, which facilitates the installation and maintenance of the battery box 100.
[0094] Understandably, the protruding mounting portion 131 further enhances the structural rigidity and deformation resistance of the cover plate 121 by increasing the contact area and support points. Furthermore, the design of the mounting portion 131 protruding towards the cover plate 121 provides an additional connection interface, which strengthens the connection between the support beam 130 and the cover plate 121, thereby improving the overall structural stability.
[0095] Furthermore, the presence of the mounting section 131 makes the installation process of the support beam 130 simpler and more efficient, reducing the need for complex tools and processes, thereby reducing production costs and time.
[0096] like Figures 5 to 7 As shown, in some optional embodiments, the mounting part 131 is a hollow structure;
[0097] The battery housing 100 also includes fasteners 140, which pass through the composite support plate 122, the cover plate 121 and the mounting part 131 in sequence, so that the composite support plate 122, the cover plate 121 and the support beam 130 are connected.
[0098] At least some of the fasteners 140 are located within the mounting portion 131.
[0099] It should be noted that the hollow structure of the mounting section 131 effectively reduces the weight of the support beam 130 while maintaining the necessary strength and rigidity, contributing to the lightweight design of the overall battery box 100. Fasteners 140 pass through the composite support plate 122, cover plate 121, and mounting section 131, firmly connecting these components together, providing a high-strength mechanical connection and enhancing the stability of the overall structure.
[0100] It should be noted that, since at least part of the fastener 140 is located within the mounting portion 131, the hollow structure provides protection for the fastener 140, preventing it from being affected by the external environment, such as corrosion, wear, or physical damage.
[0101] In some embodiments, a first mounting hole is provided on the composite support plate 122, a second mounting hole is provided on the cover plate 121, and a third mounting hole is provided on the mounting part 131.
[0102] Fasteners 140 pass through the first mounting hole, the second mounting hole and the third mounting hole in sequence to connect the composite support plate 122, the cover plate 121 and the support beam 130.
[0103] In some embodiments, the first mounting hole is tapered to prevent the fastener 140 from protruding from the outer surface of the composite support plate 122.
[0104] In some embodiments, the fastener 140 is a rivet bolt, which further enhances the rigidity of the upper cover 120, reduces the displacement of the upper cover 120 during stepping, and reduces the risk of short circuit failure after the battery cell comes into contact with the upper cover 120.
[0105] like Figures 5 to 7 As shown, in some alternative embodiments, the battery housing 100 further includes a seal 150, which is fitted onto the fastener 140 and located between the composite support plate 122 and the cover plate 121.
[0106] It should be noted that the sealing element 150 provides additional sealing protection to prevent moisture, dust and other contaminants from entering the battery housing 100 through the gaps in the fastener 140, thereby protecting the safety and performance of the internal battery cells.
[0107] The seal 150 effectively fills the gap between the composite support plate 122 and the cover plate 121, preventing any leakage of liquid or gas and ensuring the sealing integrity of the battery housing 100.
[0108] In some embodiments, the seal 150 may be made of an elastic material that can absorb and mitigate vibrations and shocks to a certain extent, protecting the fastener 140 and the surrounding structure from mechanical stress.
[0109] The seal 150 can compensate for minor misalignment between the composite support plate 122 and the cover plate 121 due to manufacturing tolerances, ensuring a tight fit and stable connection.
[0110] like Figure 4 As shown, in some optional embodiments, the composite support plate 122 is a honeycomb support plate.
[0111] It should be noted that the honeycomb structure can effectively absorb and disperse external impact energy, providing excellent impact resistance and protecting the internal battery cells from mechanical damage.
[0112] The elastic properties of the honeycomb structure help to reduce vibration, decrease the impact of vibration on the battery cells, and improve the battery's lifespan and reliability.
[0113] The battery case provided in this application includes a lower case with an opening; and an upper case cover, which includes a cover plate and a composite support plate. The cover plate is disposed on the opening through the opening, and the composite support plate is disposed on the cover plate and located on the side of the cover plate away from the lower case.
[0114] By using a composite support plate, the weight of the battery box is effectively reduced while maintaining high mechanical strength. This improves the rigidity of the upper cover of the battery box, ensures a safe gap between the upper cover and the cell electrode plates inside the battery box, and reduces the safety risks to the cells caused by long-term trampling of the CTV battery box.
[0115] In addition, this application embodiment also provides a battery housing 100 including the above-described embodiment.
[0116] It should be noted that the specific structure of the battery housing 100 will not be limited here, but can be referred to the above.
[0117] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation of this application.
[0118] Furthermore, 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0119] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A battery housing (100), characterized in that, include: The lower housing (110) has an opening; The upper box cover (120) includes a cover plate (121) and a composite support plate (122). The cover plate (121) covers the opening through the opening, and the composite support plate (122) is disposed on the cover plate (121) and located on the side of the cover plate (121) away from the lower box body (110).
2. The battery housing (100) according to claim 1, characterized in that, The composite support plate (122) has a first mounting surface (1221), and the cover plate (121) has a second mounting surface (1211), with the first mounting surface (1221) facing the second mounting surface (1211). The structural shape of the first mounting surface (1221) matches the structural shape of the second mounting surface (1211).
3. The battery housing (100) according to claim 2, characterized in that, The battery housing (100) also includes a sealing adhesive, and the first mounting surface (1221) and the second mounting surface (1211) are connected by the sealing adhesive.
4. The battery housing (100) according to any one of claims 1-3, characterized in that, The battery box (100) also includes a support beam (130), which is disposed on the cover plate (121) and located on the side of the cover plate (121) away from the composite support plate (122).
5. The battery housing (100) according to claim 4, characterized in that, There are at least two support beams (130); At least two of the support beams (130) are staggered on the cover plate (121).
6. The battery housing (100) according to claim 4, characterized in that, The support beam (130) has a mounting part (131) that protrudes toward the cover plate (121) and is disposed on the cover plate (121).
7. The battery housing (100) according to claim 6, characterized in that, The mounting part (131) has a hollow structure; The battery housing (100) also includes fasteners (140) that pass through the composite support plate (122), the cover plate (121), and the mounting part (131) in sequence, so as to connect the composite support plate (122), the cover plate (121), and the support beam (130); At least a portion of the fasteners (140) are located within the mounting portion (131).
8. The battery housing (100) according to claim 7, characterized in that, The battery housing (100) also includes a sealing element (150), which is sleeved on the fastener (140) and located between the composite support plate (122) and the cover plate (121).
9. The battery housing (100) according to any one of claims 1-3, characterized in that, The composite support plate (122) is a honeycomb support plate.
10. A battery box, characterized in that, Includes the battery housing (100) as described in any one of claims 1 to 9.