Battery box and electric vehicle

Abstract

The application discloses a battery box and an electric vehicle. The battery box comprises a box body and a cover plate. The box body is provided with a mounting cavity and an opening communicating with the mounting cavity. The cover plate is arranged on the opening of the box body to seal the mounting cavity. At least one first sealing element is arranged between the cover plate and the box body to seal the mounting cavity. At least one second sealing element is arranged between the cover plate and the box body to seal the mounting cavity. Compared with the prior art, the first sealing element and the second sealing element are arranged independently to form a double sealing barrier, so that the protection capability of the battery box is effectively improved. The two independent sealing elements improve the sealing of the mounting cavity to a double defense line. When the sealing performance of the outer sealing element is reduced due to local damage, compression permanent deformation, assembly deviation or environmental aging, the inner sealing element can still block the moisture and dust from entering the mounting cavity, so that the sealing performance is effectively improved.

Description

Technical Field

[0001] This application relates to the field of new energy battery technology, and in particular to a battery box and an electric vehicle. Background Technology

[0002] With the rapid development of new energy vehicles, energy storage devices, and portable power supplies, battery systems operate for extended periods in various application environments, placing higher demands on the protective performance of battery enclosures. Battery enclosures typically consist of a casing and a cover, internally integrating key components such as cell modules, battery management systems (BMS), wiring terminals, and thermal management structures. During use, battery enclosures must withstand various external aggressors, including rain splashes, road flooding, salt spray, dust, condensation, and cleaning operations. If the seal fails, moisture or particulate matter can enter the enclosure, potentially leading to cell short circuits, corrosion, and capacity decay, as well as BMS malfunctions, connector oxidation, and even safety accidents.

[0003] In existing technologies, a common approach is to install a single sealing element (such as a single rubber ring or foam sealing strip) at the joint between the cover plate and the box body. Basic dustproof and waterproof functions are achieved through clamping force. However, once the sealing element is partially damaged, the stress is relaxed, there is an assembly deviation, or it becomes contaminated, the sealing path is broken, which can easily lead to leakage. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this application provides a battery box and electric vehicle, which introduces multiple sealing lines between the cover and the box body to significantly improve the overall sealing performance.

[0005] To achieve the above objectives, this application adopts the following technical solution: A battery box includes a box body and a cover plate. The box body has a mounting cavity and an opening communicating with the mounting cavity, the mounting cavity being used to mount a battery. The cover plate closes to the opening of the box body. At least one first sealing member is provided between the box body and the cover plate, the first sealing member being used to seal the mounting cavity. At least one second sealing member is provided between the box body and the cover plate, the second sealing member being used to seal the mounting cavity.

[0006] In one embodiment, the cover plate includes a cover portion and an insertion portion connected to each other. The cover portion covers the opening, and the insertion portion extends into the mounting cavity. The first sealing member and the second sealing member are both disposed between the insertion portion and the cavity wall of the mounting cavity.

[0007] In one embodiment, along the depth direction of the mounting cavity, the insertion portion includes a first portion and a second portion connected to each other. The first portion is connected to the second portion and the cover portion, respectively. A first gap is formed between the first portion and the cavity wall of the mounting cavity, and a second gap is formed between the second portion and the cavity wall of the mounting cavity. A first seal is disposed at the first gap, and a second seal is disposed at the second gap. The spacing of the first gap is smaller than the spacing of the second gap.

[0008] In one embodiment, the battery box includes a bonding member disposed within the mounting cavity and forming a groove between the bonding member and the cavity wall of the mounting cavity. The second sealing member fills the groove, and the insertion portion extends at least partially into the second sealing member.

[0009] In one embodiment, the adhesive component is arranged circumferentially around the mounting cavity.

[0010] In one embodiment, the adhesive component includes a vertical part and a horizontal part connected at an angle to each other. The vertical part, the horizontal part, and the housing together form the adhesive groove. The insertion part is at least partially inserted between the vertical part and the cavity wall of the mounting cavity.

[0011] In one embodiment, a third gap is formed between the horizontal portion and the housing, the third gap is connected to the glue groove, and the second seal fills the glue groove and the third gap.

[0012] In one embodiment, along the depth direction of the mounting cavity, the insertion portion includes a first portion and a second portion connected to each other. The first portion is connected to the second portion and the cover portion respectively, and the second portion extends into the second seal. At least one side of the second portion has a guide surface, which is inclined from top to bottom and inward along the depth direction of the mounting cavity.

[0013] In one embodiment, the battery box includes a mounting bracket connected to the side of the adhesive component facing away from the insertion portion. The mounting bracket is used to lift the adhesive component to shorten the distance between the adhesive component and the insertion portion.

[0014] In one embodiment, the battery box further includes a battery assembly and a charging / discharging assembly. The battery assembly is disposed in the mounting cavity and located on the side of the mounting bracket away from the adhesive component. The mounting bracket presses against the battery assembly and the adhesive component. The charging / discharging assembly is connected to the outer surface of the cover plate and is electrically connected to the battery assembly.

[0015] In one embodiment, the battery assembly includes a first bracket, a second bracket, and a plurality of individual batteries. The first bracket has a plurality of first fixing slots, and the second bracket has a plurality of second fixing slots. The opposite ends of the individual batteries are respectively inserted into the first fixing slots and the second fixing slots. The first bracket and the second bracket are connected to fix the individual batteries.

[0016] This application also adopts the following technical solution: an electric vehicle, including a battery box and a vehicle body according to any of the above embodiments, wherein the vehicle body is connected to the battery box, and the battery box is used to supply power to the drive system and / or on-board electrical equipment of the vehicle body.

[0017] The beneficial effects of this application are as follows: This application provides a battery box and an electric vehicle. The battery box includes a box body and a cover plate. The box body has an installation cavity and an opening communicating with the installation cavity. The cover plate closes onto the opening of the box body to seal the installation cavity. At least one first sealing element is provided between the cover plate and the box body to seal the installation cavity. At least one second sealing element is also provided between the cover plate and the box body to seal the installation cavity. Compared with the prior art, this application forms a double sealing barrier by setting independent first and second sealing elements, effectively improving the protection capability of the battery box. The use of two independent sealing elements enhances the sealing of the installation cavity to a double line of defense. When the sealing performance of the outer sealing element decreases due to local damage, permanent compression deformation, assembly deviation, or environmental aging, the inner sealing element can still continue to prevent moisture and dust from entering the installation cavity, effectively improving the sealing performance. Electric vehicles using this battery box effectively improve the environmental adaptability and operational safety of the entire vehicle. Especially under harsh conditions such as wading, dust, and temperature changes, the double sealing structure effectively ensures the stable operation of the battery system, extends battery life, and reduces maintenance costs. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of a battery box according to this application is shown; Figure 2 A cross-sectional schematic diagram of a battery box according to this application is shown; Figure 3 It shows Figure 2 Enlarged view of point A in the middle; Figure 4 A cross-sectional schematic diagram of a cover plate according to this application is shown; Figure 5 A schematic diagram of the structure of a cover plate according to this application is shown; Figure 6 Another cross-sectional schematic diagram of a battery box according to this application is shown; Figure 7 A schematic diagram of the structure of a first support according to this application is shown; Reference numerals: 1. Housing; 11. Mounting cavity; 12. Opening; 13. First gap; 14. Second gap; 15. Third gap; 10. First seal; 20. Second seal; 2. Cover plate; 21. Cover part; 22. Insertion part; 221. First part; 222. Second part; 2221. Guide surface; 3. Adhesive fixing part; 31. Adhesive groove; 32. Horizontal part; 33. Vertical part; 4. Assembly bracket; 5. Battery assembly; 51. First bracket; 52. Second bracket; 511. First fixing groove; 512. First connecting post; 521. Second fixing groove; 522. Second connecting post; 6. Charging and discharging assembly; 7. Locking part. Detailed Implementation

[0019] In this application, the terms "set up," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0020] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this application.

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] See Figure 1 This application provides an electric vehicle, including a battery box and a vehicle body. The vehicle body is connected to the battery box, which supplies power to the vehicle body's drive system and on-board electrical equipment, thereby providing stable power support for the electric vehicle.

[0023] See Figure 1 , Figure 2 and Figure 3The battery box includes a box body 1 and a cover plate 2. The box body 1 has a mounting cavity 11 and an opening 12 communicating with the mounting cavity 11. The cover plate 2 covers the opening 12 of the box body 1 to close the mounting cavity 11. At least one first sealing element 10 is provided between the cover plate 2 and the box body 1. The first sealing element 10 is used to seal the mounting cavity 11. At least one second sealing element 20 is also provided between the cover plate 2 and the box body 1. The second sealing element 20 is used to seal the mounting cavity 11.

[0024] In practical applications, the housing 1 has a mounting cavity 11 for accommodating the battery module and its auxiliary components. The mounting cavity 11 communicates with the outside through an opening 12 on the housing 1. The cover 2 is detachably fitted onto the opening 12, thereby sealing the mounting cavity 11 after assembly. To improve the isolation capability against external liquids and dust, multiple independent sealing structures are provided on the contact surface between the cover 2 and the housing 1, namely, a first sealing element 10 and a second sealing element 20. The first sealing element 10 is arranged between the first sealing surfaces of the cover 2 and the housing 1, forming a continuous first sealing path; the second sealing element 20 is arranged between second sealing surfaces spaced apart from the first sealing element 10, forming a second sealing path parallel to the first sealing path.

[0025] Compared with the prior art, this application forms a double sealing barrier by setting up an independent first sealing element 10 and a second sealing element 20, which effectively improves the protection capability of the battery box. The use of two independent sealing elements enhances the sealing of the mounting cavity 11 to a double line of defense. When the sealing performance of the outer sealing element declines due to local damage, permanent compression deformation, assembly deviation or environmental aging, the inner sealing element can still continue to block moisture and dust from entering the mounting cavity 11, effectively improving the sealing performance.

[0026] See again Figure 3 and Figure 4 The cover plate 2 includes a cover portion 21 and an insertion portion 22 connected to each other. The cover portion 21 covers the opening 12, and the insertion portion 22 extends into the mounting cavity 11. The first sealing member 10 and the second sealing member 20 are both disposed between the insertion portion 22 and the cavity wall of the mounting cavity 11.

[0027] In practical applications, the cover plate 2 includes an integral closing part 21 and an insertion part 22. The closing part 21 fits around the periphery of the opening 12 of the housing 1, while the insertion part 22 extends axially into the mounting cavity 11 along the opening 12 of the housing 1, forming a circumferential fit with the cavity wall of the mounting cavity 11. The first sealing element 10 and the second sealing element 20 are both disposed between the outer peripheral surface of the insertion part 22 and the inner peripheral surface of the cavity wall of the mounting cavity 11, and are located at different axial positions on the outer peripheral surface of the insertion part 22, ensuring a staggered sealing layout in the radial direction. By disposing the first sealing element 10 and the second sealing element 20 between the insertion part 22 and the cavity wall of the mounting cavity 11, the sealing function can be transferred from the plane of the opening 12 to the axial cylindrical surface inside the cavity, avoiding direct exposure of the edge of the opening 12 to rainwater splashing, pressurized water scouring, and external particle impact, thus reducing interference from external factors on the seal.

[0028] See again Figure 1 The battery box also includes locking elements 7, which pass through the box body 1 and the cover plate 2 to fix the cover plate 2 to the box body 1. The locking elements 7 are distributed circumferentially around the opening 12. The locking elements 7 can be detachable connectors such as bolts, screws, or clips. Multiple locking elements 7 evenly distributed circumferentially secure the cover plate 2 to the box body 1, ensuring a stable pressure on the sealing surface between the cover plate 2 and the box body 1. The positions of the locking elements 7 are staggered from the first seal 10 and the second seal 20 to avoid stress concentration affecting the uniform pressure on the seals.

[0029] See again Figure 3 Along the depth direction of the mounting cavity 11, the insertion part 22 includes a first part 221 and a second part 222 that are connected to each other. The first part 221 is connected to the second part 222 and the cover part 21 respectively. A first gap 13 is formed between the first part 221 and the cavity wall of the mounting cavity 11, and a second gap 14 is formed between the second part 222 and the cavity wall of the mounting cavity 11. A first sealing member 10 is provided at the first gap 13, and a second sealing member 20 is provided at the second gap 14. The spacing of the first gap 13 is smaller than the spacing of the second gap 14.

[0030] In practical applications, the insertion portion 22 of the cover plate 2 includes a first portion 221 and a second portion 222 connected to each other along the depth direction of the mounting cavity 11. One end of the first portion 221 is transitionally connected to the cover portion 21, and the other end is connected to the second portion 222. A first gap 13 is formed between the first portion 221 and the cavity wall of the mounting cavity 11, and a second gap 14 is formed between the second portion 222 and the cavity wall of the mounting cavity 11. The spacing of the first gap 13 is smaller than the spacing of the second gap 14. The outer diameter of the first portion 221 is relatively large, so that the first gap 13 is a small gap fit, which is used to bear a high sealing compression ratio to achieve an initial sealing and effectively prevent external media from entering. The outer diameter of the second portion 222 is relatively small, so that the second gap 14 is a moderately loose fit, allowing the second seal 20 to undergo elastic deformation during assembly, forming a secondary redundant seal. The differentiated design of the two gaps ensures the reliability of the seal, reduces the risk of assembly stress concentration, and improves structural durability and environmental adaptability. Furthermore, the first gap 13 and the second gap 14 are beneficial for compensating for dimensional tolerances during the manufacturing and assembly process.

[0031] See again Figure 3 The battery box includes a bonding member 3, which is disposed in the mounting cavity 11 and forms a groove 31 between the bonding member 3 and the cavity wall of the mounting cavity 11. The second seal 20 is filled in the groove 31, and the insertion part 22 extends at least partially into the second seal 20.

[0032] In practical applications, a solid adhesive component 3, either integrally formed or separately molded, is disposed within the mounting cavity 11. The solid adhesive component 3 is arranged along the cavity wall of the mounting cavity 11, and its surface forms an adhesive groove 31 with the cavity wall of the mounting cavity 11. The adhesive groove 31 is used to accommodate the second sealing component 20. During assembly, the solid adhesive component 3 is placed inside the mounting cavity 11, and then the second sealing component 20 is injected into the adhesive groove 31, partially covering the second part 222 of the insertion part 22. After curing, a stable and reliable sealing connection is formed. By providing an adhesive component inside the mounting cavity 11 and forming an adhesive groove 31 with the cavity wall, the second sealing component 20 is fixed in the adhesive groove 31 in a filling manner, and the insertion part 22 extends into it, an embedded sealing structure can be formed, further improving the sealing performance.

[0033] See again Figure 2 and Figure 3 The adhesive fixing component 3 is arranged circumferentially around the mounting cavity 11. The adhesive fixing component 3 is continuously arranged along the circumference of the mounting cavity 11 to form a closed annular structure, ensuring the uniformity and integrity of the adhesive groove 31 in the circumferential direction, and avoiding uneven filling of the second seal 20 due to local breaks.

[0034] It should be noted that the first seal 10 can be made of materials such as foamed silicone or liquid silicone rubber, and the second seal 20 can be made of materials such as liquid silicone rubber.

[0035] See again Figure 3 The adhesive component 3 includes a vertical part 33 and a horizontal part 32 connected at an angle to each other. The vertical part 33 and the horizontal part 32 together with the housing 1 form an adhesive groove 31. The insertion part 22 is at least partially inserted between the vertical part 33 and the cavity wall of the mounting cavity 11.

[0036] In practical applications, the adhesive component 3 adopts an integrally molded angled cross-section configuration, including a vertical part 33 and a horizontal part 32 connected at an angle to each other. It can be an L-shaped angled structure. The vertical part 33 is arranged along the depth direction of the mounting cavity 11, and the horizontal part 32 is extended along the radial or circumferential direction of the mounting cavity 11. The vertical part 33, the horizontal part 32 and the cavity wall of the mounting cavity 11 form an adhesive groove 31. The vertical part 33 and the cavity wall of the mounting cavity 11 form the groove wall of the adhesive groove 31, and the horizontal part 32 forms the bottom of the adhesive groove 31. The insertion part 22 is at least partially inserted between the vertical part 33 and the cavity wall of the mounting cavity 11. After the second seal 20 is filled into the adhesive groove 31, the circumferential covering and axial limiting of the insertion part 22 are achieved. This structure not only enhances the stability of the sealing interface, but also effectively prevents the displacement of the second seal 20 under vibration or thermal expansion and contraction conditions, ensuring the sealing reliability under long-term working conditions.

[0037] See again Figure 3 A third gap 15 is formed between the horizontal part 32 and the housing 1. The third gap 15 is connected to the glue groove 31. The second seal 20 fills the glue groove 31 and the third gap 15.

[0038] In practical applications, the third gap 15 between the horizontal part 32 and the housing 1 can compensate for dimensional deviations caused by machining tolerances or assembly deformation between the horizontal part 32 and the housing 1. Simultaneously, it serves as an extended filling area for the second seal 20, improving sealing redundancy. The third gap 15 communicates with the adhesive groove 31, allowing the second seal 20 to continuously fill this area during the curing process, forming an integrated sealing structure that effectively blocks leakage paths along the contact surface between the cured adhesive part 3 and the housing 1.

[0039] See Figure 4 The second part 222 has a guide surface 2221 formed on at least one side, and the guide surface 2221 is inclined from top to bottom and inward along the depth direction of the mounting cavity 11.

[0040] In practical applications, when the second part 222 is inserted into the glue tank 31, the inclined guide surface 2221 can evenly guide the uncured sealant into the glue tank 31, ensuring that the sealant is continuously distributed in the glue tank 31 without air bubbles, thereby improving the filling density.

[0041] See again Figure 3 The battery box includes a mounting bracket 4, which is connected to the side of the adhesive component 3 away from the insertion part 22. The mounting bracket 4 is used to lift the adhesive component 3 to shorten the distance between the adhesive component 3 and the insertion part 22.

[0042] In practical applications, the assembly bracket 4 adjusts the height of the adhesive component 3 to make the fit between it and the insertion part 22 tighter, thereby reducing the assembly gap and increasing the initial contact pressure for sealing.

[0043] See Figure 2 and Figure 5 The battery box also includes a battery assembly 5 and a charging / discharging assembly 6. The battery assembly 5 is located in the mounting cavity 11 and is located on the side of the mounting bracket 4 away from the adhesive component 3. The mounting bracket 4 presses against the battery assembly 5 and the adhesive component 3. The charging / discharging assembly 6 is connected to the outer surface of the cover plate 2 and is electrically connected to the battery assembly 5.

[0044] In practical applications, the charging and discharging component 6 is connected to the positive and negative terminals of the battery component 5 via wires to achieve power output and input control. The mounting bracket 4 not only adjusts the position of the adhesive component 3, but also provides mechanical support. The mounting bracket 4 presses against the battery component 5 and the adhesive component 3 to support the structural stability of the battery component 5 under vibration, preventing loosening of electrical connections or displacement of the component due to bumps or impacts.

[0045] See Figure 6 and Figure 7 The battery assembly 5 includes a first support 51, a second support 52, and multiple individual batteries (not shown in the figure). The first support 51 has multiple first fixing slots 511, and the second support 52 has multiple second fixing slots 521. The first support 51 and the second support 52 are respectively located at opposite ends of an individual battery, and the opposite ends of the individual battery are respectively inserted into the first fixing slots 511 and the second fixing slots 521. The first support 51 and the second support 52 are connected to fix the individual battery. Through the cooperation of the first support 51 and the second support 52, the two ends of the individual battery are fixed, forming a rigid support structure, effectively dispersing vibration stress, and avoiding fatigue damage to the individual battery due to repeated vibration. Multiple individual batteries are connected in series or in parallel via the first support 51 and the second support 52 to form a battery module, improving energy density and space utilization.

[0046] Specifically, the first bracket 51 has a first connecting post 512 on the side facing the second bracket 52, and the second bracket 52 has a second connecting post 522 on the side facing the first bracket 51. The first connecting post 512 and the second connecting post 522 are connected together by bolts or screws to fix the first bracket 51 and the second bracket 52.

[0047] 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.

[0048] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0049] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A battery box, characterized in that, include: The housing has a mounting cavity and an opening communicating with the mounting cavity, the mounting cavity being used to install a battery; as well as A cover plate that closes onto the opening of the housing; At least one first sealing element is provided between the housing and the cover plate, the first sealing element being used to seal the mounting cavity; at least one second sealing element is provided between the housing and the cover plate, the second sealing element being used to seal the mounting cavity.

2. The battery box according to claim 1, characterized in that, The cover plate includes a cover portion and an insertion portion connected to each other. The cover portion covers the opening, and the insertion portion extends into the mounting cavity. The first sealing member and the second sealing member are both disposed between the insertion portion and the cavity wall of the mounting cavity.

3. The battery box according to claim 2, characterized in that, Along the depth direction of the mounting cavity, the insertion part includes a first part and a second part connected to each other. The first part is connected to the second part and the cover part respectively. A first gap is formed between the first part and the cavity wall of the mounting cavity, and a second gap is formed between the second part and the cavity wall of the mounting cavity. The first seal is disposed at the first gap, and the second seal is disposed at the second gap. The spacing of the first gap is smaller than the spacing of the second gap.

4. The battery box according to claim 2, characterized in that, The battery box includes a bonding component, which is disposed in the mounting cavity and forms a groove between the bonding component and the cavity wall of the mounting cavity. The second sealing component fills the groove, and the insertion portion extends at least partially into the second sealing component.

5. The battery box according to claim 4, characterized in that, The adhesive component is arranged circumferentially around the mounting cavity.

6. The battery box according to claim 4, characterized in that, The adhesive component includes a vertical part and a horizontal part connected at an angle to each other. The vertical part, the horizontal part and the housing form the adhesive groove. The insertion part is at least partially inserted between the vertical part and the cavity wall of the mounting cavity.

7. The battery box according to claim 6, characterized in that, A third gap is formed between the horizontal part and the housing, the third gap is connected to the glue groove, and the second seal fills the glue groove and the third gap.

8. The battery box according to claim 4, characterized in that, Along the depth direction of the mounting cavity, the insertion portion includes a first portion and a second portion connected to each other. The first portion is connected to the second portion and the cover portion respectively, and the second portion extends into the second seal. At least one side of the second portion has a guide surface, which is inclined from top to bottom and inward along the depth direction of the mounting cavity.

9. The battery box according to claim 4, characterized in that, The battery box includes a mounting bracket connected to the side of the adhesive component facing away from the insertion portion. The mounting bracket is used to lift the adhesive component to shorten the distance between the adhesive component and the insertion portion.

10. The battery box according to claim 9, characterized in that, The battery box further includes a battery assembly and a charging / discharging assembly. The battery assembly is disposed in the mounting cavity and located on the side of the mounting bracket away from the adhesive component. The mounting bracket presses against the battery assembly and the adhesive component. The charging / discharging assembly is connected to the outer surface of the cover plate and is electrically connected to the battery assembly.

11. The battery box according to claim 10, characterized in that, The battery assembly includes a first bracket, a second bracket, and a plurality of individual batteries. The first bracket has a plurality of first fixing slots, and the second bracket has a plurality of second fixing slots. The opposite ends of the individual batteries are respectively inserted into the first fixing slots and the second fixing slots. The first bracket and the second bracket are connected to fix the individual batteries.

12. An electric vehicle, characterized in that, The vehicle includes a battery box as described in any one of claims 1 to 11 and a vehicle body, wherein the vehicle body is connected to the battery box, and the battery box is used to supply power to the drive system and / or on-board electrical equipment of the vehicle body.

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