Cover plate assembly and battery box

Abstract

The utility model belongs to the technical field of batteries, and discloses a cover plate assembly and a battery box, the cover plate assembly comprises a cover plate main body, a first electrical component and a first connecting piece, the cover plate main body detachably covers a maintenance port of a box main body of the battery box, and the cover plate main body is provided with an operation port; the first electrical component is mounted on the cover plate main body; the first connecting piece is electrically connected to the first electrical component, and at least part of the first connecting piece is exposed through the operation opening and is detachably and electrically connected with the battery module in the box main body. When the first electrical component is overhauled or replaced, the connection between the first connecting piece and the battery module can be disconnected through the operation port, then the cover plate main body is detached from the maintenance port, and meanwhile, the first electrical component is detached along with the cover plate main body, so that the first connecting piece can be prevented from being pulled when the cover plate main body is detached; the first electrical component, the battery module and the connecting piece between the first electrical component and the battery module are prevented from being damaged by pulling, the maintenance difficulty is reduced, and the maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a cover plate assembly and a battery box. Background Art

[0002] The battery box body and cover are usually connected by structural adhesive or FDS (flow drill screw tightening process), which makes it impossible to disassemble the box body and cover normally. Electrical components such as BMS (battery management system) are installed in the battery box, and electrical components such as MSD sockets are provided on the battery box body. When electrical components such as BMS and MSD sockets are damaged and the battery box body needs to be opened for maintenance, they can only be removed by damaging the cover or even the box body and module. There are problems such as long disassembly time and the box cover cannot be reused.

[0003] In order to facilitate the maintenance and replacement of electrical components in the battery box, in the prior art, a detachable maintenance cover is usually provided on the box, and the electrical components that need to be frequently maintained and replaced are fixed on the maintenance cover. After the maintenance cover is removed from the box, the electrical components fixed on the maintenance cover are also removed, so that the electrical components can be inspected or replaced.

[0004] The existing technology has the following drawbacks: the electrical components to be inspected, fixed to the maintenance cover, are electrically connected to the modules in the battery box via leads. After removing the maintenance cover, the leads need to be disconnected to remove the maintenance cover and the electrical components to be inspected thereon. This results in the leads being pulled when the maintenance cover is removed, causing problems such as breakage and damage. This not only increases the difficulty of removal, but in serious cases can also cause the electrical components to be inspected on the maintenance cover and the modules in the battery box to be pulled, causing them to shift or be damaged. In addition, when the leads are made of a hard structure such as a copper busbar, the electrical components cannot be removed by simply removing the maintenance cover.

[0005] Therefore, there is an urgent need for a cover plate assembly and a battery box to solve the above problems existing in the prior art. Utility Model Content

[0006] The purpose of the utility model is to provide a cover assembly and a battery box, which can reduce the difficulty of repairing and replacing electrical components, improve the repair efficiency, and avoid pulling and damaging the electrical components and the leads connected to the electrical components during repair, thereby extending the service life of the battery box.

[0007] To achieve this purpose, the present invention adopts the following technical solutions:

[0008] In a first aspect, a cover plate assembly is provided, comprising:

[0009] The cover body is configured to detachably cover the maintenance opening of the box body of the battery box, and the cover body is provided with an operation port;

[0010] a first electrical component mounted on the cover body;

[0011] A first connector is electrically connected to the first electrical component, and at least a portion of the first connector is exposed through the operation port and is detachably electrically connected to the battery module in the box body.

[0012] As an optional solution of the cover plate assembly provided by the present invention, the cover plate assembly further includes:

[0013] The outer cover plate is detachably sealed on the operation port.

[0014] As an optional solution of the cover plate assembly provided by the present invention, the cover plate assembly further includes:

[0015] The first sealing gasket is sandwiched between the outer cover and the cover body. The first sealing gasket is provided with a first opening facing the operation port.

[0016] As an optional solution of the cover plate assembly provided by the present invention, a convex structure is provided on the outer cover plate in a direction away from the cover plate body.

[0017] As an optional solution of the cover plate assembly provided by the present invention, the cover plate assembly further includes:

[0018] A locking member is provided to be connected to the first connecting member and the second connecting member electrically connected to the battery module, and the locking member is exposed through the operating port.

[0019] As an optional solution of the cover plate assembly provided by the present invention, the first connecting member includes a first connecting body, a first end of the first connecting body is connected to the first electrical component, and a first connecting piece is protruded from an end surface of a second end of the first connecting body;

[0020] The second connecting member includes a second connecting body, a first end of the second connecting body is connected to the battery module, and a second connecting piece is protruded from an end surface of a second end of the second connecting body;

[0021] The first connecting piece and the second connecting piece are stacked and both are provided with a through hole for passing the locking piece.

[0022] As an optional solution of the cover assembly provided by the present invention, the first electrical component is connected to two first connecting members, and the cover body is provided with two operating ports corresponding one to one with the two first connecting members, and the two operating ports are respectively arranged on opposite sides of the first electrical component.

[0023] As an optional solution of the cover plate assembly provided by the present invention, the cover plate assembly further includes:

[0024] The second sealing gasket is configured to be sandwiched between the cover plate body and the box body, and is provided with a second opening facing the maintenance port.

[0025] As an optional solution of the cover plate assembly provided by the present invention, the first electrical component is detachably connected to the cover plate body.

[0026] In the second aspect, a battery box is provided, comprising a box body and a battery module, wherein the box body comprises a box main body and the cover assembly as described above, the box main body is provided with a maintenance port, the cover assembly is installed at the maintenance port, and an installation chamber for installing the battery module is enclosed between the cover assembly and the box main body.

[0027] As an optional solution of the battery box provided by the present invention, the box body is provided with a protruding enclosure structure, and the enclosure structure is arranged outside the maintenance port and the cover assembly.

[0028] As an optional solution of the battery box provided by the utility model, the battery box further includes a second electrical component, which is arranged in the box body and electrically connected to the battery module;

[0029] The second electrical component is at least partially disposed opposite to the maintenance opening; and / or the maintenance opening allows the second electrical component to pass through.

[0030] Beneficial effects of the utility model:

[0031] The utility model provides a cover assembly and a battery box, wherein a first electrical component on a cover body is electrically connected to a battery module via a first connector. An operating port is provided on the cover body, and at least a portion of the first connector is exposed through the operating port and detachably connected to the battery module. When inspecting or replacing the first electrical component, the connection between the first connector and the battery module can be disconnected through the operating port first, and then the cover body can be removed from the maintenance port. At the same time, the first electrical component is removed along with the cover body, making it easier to inspect and replace the first electrical component. Since the connection between the first electrical component and the battery module can be disconnected through the operating port before the cover body is removed, it is possible to avoid pulling the first connector when removing the cover body, thereby preventing the first electrical component, the battery module, and the connector between the first electrical component and the battery module from being damaged by pulling. This reduces the difficulty of inspection and improves the efficiency of inspection and prolongs the service life of the battery box. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying any creative work.

[0033] Figure 1 This is a first structural diagram of a battery box provided in a specific embodiment of the present utility model;

[0034] Figure 2 yes Figure 1 A partial view of

[0035] Figure 3 This is a second structural diagram of the battery box provided in a specific embodiment of the utility model;

[0036] Figure 4 yes Figure 3 A partial view of

[0037] Figure 5 It is a side view of a battery box provided by a specific embodiment of the utility model;

[0038] Figure 6 This is a side view of the battery box provided by the specific embodiment of the utility model after the outer cover is removed;

[0039] Figure 7 It is a side view of the battery box provided by the specific embodiment of the utility model with the cover plate main body removed.

[0040] In the picture:

[0041] 100, housing; 200, second connector; 300, second electrical component;

[0042] 110. Box body; 120. Cover assembly;

[0043] 1100, maintenance port; 1110, bottom shell; 1120, upper cover; 1130, enclosure structure;

[0044] 210, second connecting body; 220, second connecting piece;

[0045] 1. Cover plate body; 2. First electrical component; 3. First connector; 4. Outer cover plate; 5. First gasket; 6. Locking member; 7. Second gasket; 8. First fastener; 9. Second fastener;

[0046] 11. Operation port;

[0047] 31. First connecting body; 32. First connecting piece;

[0048] 41. Convex hull structure;

[0049] 51. First port;

[0050] 71. The second opening. DETAILED DESCRIPTION

[0051] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0052] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0053] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0054] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0055] In this embodiment, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this utility model generally indicates that the related objects are in an "or" relationship.

[0056] In the embodiments of the present invention, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted.

[0057] like Figure 1 、 Figure 2 as well as Figure 3 As shown, an embodiment of the present application provides a battery box, including a box body 100 and a battery module. The box body 100 includes a box body 110 and a cover assembly 120. The box body 110 is provided with a maintenance port 1100. The cover assembly 120 is installed at the maintenance port 1100. An installation chamber for installing the battery module is enclosed between the cover assembly 120 and the box body 110.

[0058] Specifically, the cover assembly 120 is detachably mounted at the maintenance opening 1100 of the box body 110 . After the cover assembly 120 is removed, the maintenance opening 1100 of the box body 110 is exposed.

[0059] like Figure 2 As shown, the box body 110 includes a bottom shell 1110 and an upper cover 1120 that are interlocked. The bottom shell 1110 has a space for placing the battery module, and the upper end of the bottom shell 1110 is open. The upper cover 1120 is interlocked with the upper end opening of the bottom shell 1110. The maintenance port 1100 is provided on the side of the bottom shell 1110.

[0060] like Figure 3 and Figure 4 As shown, the cover assembly 120 provided in this embodiment includes a cover body 1 , a first electrical component 2 and a first connector 3 .

[0061] Specifically, the cover body 1 is configured to be detachably sealed on the maintenance port 1100 of the box body 110 of the battery box, and the cover body 1 is provided with an operating port 11; the first electrical component 2 is installed on the cover body 1; the first connecting member 3 is electrically connected to the first electrical component 2, and at least part of the first connecting member 3 is exposed through the operating port 11 and is detachably electrically connected to the battery module in the box body 110.

[0062] The first electrical component 2 on the cover body 1 is electrically connected to the battery module via the first connector 3. By providing an operating port 11 on the cover body 1, and allowing at least a portion of the first connector 3 to be exposed through the operating port 11 and detachably connected to the battery module, when inspecting or replacing the first electrical component 2, the connection between the first connector 3 and the battery module can be first disconnected via the operating port 11, and then the cover body 1 can be removed from the maintenance port 1100. At the same time, the first electrical component 2 is removed along with the cover body 1, making it easier to inspect and replace the first electrical component 2. Since the connection between the first electrical component 2 and the battery module can be disconnected via the operating port 11 before the cover body 1 is removed, pulling on the first connector 3 when removing the cover body 1 can be avoided, preventing the first electrical component 2, the battery module, and the connector between the first electrical component 2 and the battery module from being damaged by the pulling. This reduces the difficulty of inspection and improves the efficiency of inspection, thereby extending the service life of the battery box.

[0063] For example, see Figure 2 and Figure 4 The cover body 1 is detachably connected to the box body 110 via a first fastener 8. The first fastener 8 can be a threaded member such as a bolt or screw, and is used to thread the cover body 1 to the box body 110. Furthermore, multiple first fasteners 8 are provided at intervals around the circumference of the cover body 1 to ensure a stable and secure connection between the cover body 1 and the box body 110, and to ensure a certain degree of sealing.

[0064] In some embodiments, see Figure 2 and Figure 4 The cover assembly 120 further includes an outer cover 4, which removably covers the access opening 11. Removing the outer cover 4 from the cover body 1 exposes the access opening 11, through which the electrical connection between the first connector 3 and the battery module can be disconnected. The outer cover 4 protects the electrical connection between the first connector 3 and the battery module and ensures the sealing of the entire battery box body 100.

[0065] For example, the outer cover plate 4 is detachably connected to the cover plate body 1 via second fasteners 9. The second fasteners 9 can be threaded members such as bolts and screws, and are used to thread the outer cover plate 4 onto the cover plate body 1. Furthermore, multiple second fasteners 9 are provided along the circumference of the outer cover plate 4 to ensure a secure and reliable connection between the outer cover plate 4 and the cover plate body 1, as well as a good seal between the outer cover plate 4 and the cover plate body 1, and to facilitate removal of the outer cover plate 4.

[0066] In this embodiment, the outer cover plate 4 is provided with a convex structure 41 projecting in a direction away from the cover plate body 1. The provision of the convex structure 41 can increase the bending strength of the outer cover plate 4 and reduce its deformation. Moreover, because the convex structure 41 is projecting in a direction away from the cover plate body 1, it can leave more space and avoid interference with the first connecting member 3.

[0067] In some embodiments, the first electrical component 2 is detachably connected to the cover body 1. After the cover body 1 and the first electrical component 2 are removed from the maintenance opening 1100 of the box body 110, the first electrical component 2 is removed from the cover body 1 to facilitate maintenance, replacement, etc.

[0068] For example, the first electrical component 2 can be connected to the cover body 1 by screws, bolts or other threaded parts, or can be snap-fitted to the cover body 1 by a snap-fit ​​structure.

[0069] For example, the first electrical component 2 may be an MSD socket, which can be plugged with a plug. The plug on the MSD socket is first unplugged before removing the outer cover 4. The cover assembly 120 provided in this embodiment facilitates maintenance and replacement of the MSD socket component of the battery box.

[0070] In this embodiment, see Figure 4 The cover assembly 120 also includes a first sealing gasket 5 and a second sealing gasket 7. The first sealing gasket 5 is sandwiched between the outer cover 4 and the cover body 1. The first sealing gasket 5 is provided with a first opening 51 that is directly opposite to the operation port 11. When the outer cover 4 is removed, the electrical connection position of the first connector 3 and the battery module is exposed through the operation port 11 and the first opening 51. The provision of the first sealing gasket 5 can further improve the sealing between the outer cover 4 and the cover body 1. When the cover body 1 is removed, the components inside the box body 110 are exposed through the maintenance port 1100 and the second opening 71. The provision of the second sealing gasket 7 can further improve the sealing between the cover body 1 and the box body 110.

[0071] Exemplarily, the first sealing gasket 5 and the second sealing gasket 7 can both be sealing foam or sealing rubber.

[0072] In this embodiment, see Figure 4 and Figure 6 The cover assembly 120 further includes a locking member 6. The battery module is electrically connected to a second connector 200. The locking member 6 is used to connect the first connector 3 and the second connector 200 to achieve electrical connection between the first electrical component 2 and the battery module. Removing the locking member 6 also disconnects the electrical connection between the first connector 3 and the second connector 200.

[0073] Specifically, the locking member 6 is connected to the first connector 3 and the second connector 200. When the outer cover 4 is removed, the locking member 6 is exposed through the operation port 11. The locking member 6 can be removed through the operation port 11 using a tool to disconnect the electrical connection between the first connector 3 and the second connector 200. The locking member 6 is exemplarily a bolt and a nut. The bolt passes through the first connector 3 and the second connector 200 and is threadedly connected to the nut to ensure good electrical contact between the first connector 3 and the second connector 200.

[0074] See also Figure 4 The first connector 3 includes a first connector body 31, the first end of which is connected to the first electrical component 2. A first connecting tab 32 is protruding from the end surface of the second end of the first connector body 31, forming a first stepped groove between the first connector body 31 and the first connecting tab 32. The second connector 200 includes a second connector body 210, the first end of the second connector body 210 is connected to the battery module, and a second connecting tab 220 is protruding from the end surface of the second end of the second connector body 210, forming a second stepped groove between the second connector body 210 and the second connecting tab 220. The first connecting tab 32 and the second connecting tab 220 are stacked, with the first connecting tab 32 positioned within the second stepped groove and the second connecting tab 220 positioned within the first stepped groove, facilitating the positioning of the first and second connecting tabs 32, 220. Both the first and second connecting tabs 32, 220 are provided with through-holes for receiving a locking member 6. The bolt of the locking member 6 passes through the through-holes in the first and second connecting tabs 32, 220 and is threadedly connected to a nut. When the nut is tightened, the first connecting piece 32 and the second connecting piece 220 fit tightly together, ensuring that there is a sufficient contact area between the first connecting member 3 and the second connecting member 200, thereby reducing contact resistance.

[0075] In this embodiment, the first connector 3 and the second connector 200 are both copper busbars, which have good electrical conductivity and are easily connected via the locking member 6. In other embodiments, the first connector 3 and the second connector 200 can both be wire harnesses, with electronic connectors provided at their ends, and the electrical connection between the first electrical component 2 and the battery module is achieved by plugging the electronic connectors together.

[0076] In this embodiment, see Figure 4 and Figure 6The first electrical component 2 is connected to two first connectors 3, one for incoming wires and the other for outgoing wires. The battery module is connected to two second connectors 200. The two first connectors 3 and the two second connectors 200 are detachably connected via locking members 6, forming a closed circuit. Accordingly, the cover body 1 is provided with two access ports 11, corresponding to the two first connectors 3. These access ports 11 are located on opposite sides of the first electrical component 2 to facilitate removal of the locking members 6 on the two first connectors 3. Furthermore, the two access ports 11 are spaced apart along the width of the battery compartment, providing a more rational layout.

[0077] Alternatively, see Figure 2 The box body 110 is provided with a protective structure 1130, which is arranged outside the maintenance port 1100 and the cover assembly 120 to protect the first electrical component 2 of the cover assembly 120 from being hit or accidentally touched. Furthermore, the protective structure 1130 is provided on the bottom shell 1110 of the box body 110.

[0078] Alternatively, see Figure 4 The battery box also includes a second electrical component 300, which is disposed within the box body 110 and electrically connected to the battery module. At least a portion of the second electrical component 300 is disposed directly opposite the maintenance port 1100, allowing for inspection and maintenance of the second electrical component 300 through the maintenance port 1100, improving maintenance convenience.

[0079] Furthermore, the maintenance port 1100 allows the second electrical component 300 to pass through. After the second electrical component 300 is removed from the box body 110, it can be taken out through the maintenance port 1100, which is more convenient for maintenance. A new second electrical component 300 can also be replaced and installed into the box body 110 through the maintenance port 1100.

[0080] For example, the second electrical component 300 is a battery management system (BMS). After the cover assembly 120 is removed, the BMS can be repaired or replaced.

[0081] Reference Figures 5 to 7 The maintenance process of the first electrical component 2 and the second electrical component 300 is roughly as follows:

[0082] like Figure 5 As shown, when the first electrical component 2 (taking the MSD socket as an example) needs to be repaired and replaced, the plug component plugged into the MSD socket is first pulled out, and the two outer covers 4 are removed to expose the two operating ports 11.

[0083] like Figure 6The figure shows the case after the plug assembly has been removed and the two outer covers 4 have been disassembled. At this point, the locking member 6 connecting the first connector 3 and the second connector 200 is exposed through the access opening 11. Maintenance personnel can remove the two locking members 6 through the access opening 11 to disconnect the electrical connection between the first connector 3 and the second connector 200. After removing the locking members 6, the cover body 1 is removed from the box body 110. The first electrical component 2 (MSD socket) and the first connector 3 are removed along with the cover body 1, revealing the maintenance opening 1100.

[0084] like Figure 7 Figure 1 shows the cover body 1 after removal. The MSD socket can then be removed from the cover body 1 for repair or replacement. Furthermore, after the cover body 1 is removed, the second electrical component 300 (using the BMS as an example) inside the box body 110 can be repaired or replaced through the exposed maintenance port 1100.

[0085] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Cover plate assembly, characterized in that, include: A cover plate body (1) is configured to detachably cover a maintenance opening (1100) of a box body (110) of a battery box, wherein the cover plate body (1) is provided with an operation opening (11); A first electrical component (2) is mounted on the cover plate body (1); A first connector (3) is electrically connected to the first electrical component (2), and at least a portion of the first connector (3) is exposed through the operating port (11) and is detachably electrically connected to the battery module in the box body (110).

2. The cover plate assembly according to claim 1, wherein: The cover plate assembly further comprises: The outer cover plate (4) is detachably sealed on the operating port (11).

3. The cover plate assembly according to claim 2, wherein: The cover plate assembly further comprises: A first sealing gasket (5) is sandwiched between the outer cover plate (4) and the cover plate body (1), and a first opening (51) facing the operating port (11) is provided on the first sealing gasket (5).

4. The cover plate assembly according to claim 2, wherein: A convex structure (41) is provided on the outer cover plate (4) in a direction away from the cover plate body (1).

5. The cover plate assembly according to claim 1, wherein: The cover plate assembly further comprises: A locking member (6) is provided and connected to the first connecting member (3) and the second connecting member (200) electrically connected to the battery module, and the locking member (6) is exposed through the operating port (11).

6. The cover plate assembly according to claim 5, wherein: The first connecting member (3) comprises a first connecting body (31), a first end of the first connecting body (31) is connected to the first electrical component (2), and a first connecting piece (32) is protruding from an end surface of a second end of the first connecting body (31); The second connecting member (200) comprises a second connecting body (210), a first end of the second connecting body (210) is connected to the battery module, and a second connecting piece (220) is convexly provided on the end surface of the second end of the second connecting body (210); The first connecting piece (32) and the second connecting piece (220) are stacked and both are provided with a through hole for passing the locking piece (6).

7. The cover plate assembly according to any one of claims 1 to 6, characterized in that: The first electrical component (2) is connected to two first connecting members (3), and the cover plate body (1) is provided with two operating ports (11) corresponding one-to-one to the two first connecting members (3), and the two operating ports (11) are respectively arranged on opposite sides of the first electrical component (2).

8. The cover plate assembly according to any one of claims 1 to 6, characterized in that: The cover plate assembly further comprises: The second sealing gasket (7) is configured to be sandwiched between the cover plate body (1) and the box body (110), and the second sealing gasket (7) is provided with a second opening (71) facing the maintenance port (1100).

9. The cover plate assembly according to any one of claims 1 to 6, characterized in that: The first electrical component (2) is detachably connected to the cover plate body (1).

10. Battery box, characterized in that, The invention comprises a box body (100) and a battery module, wherein the box body (100) comprises a box body (110) and a cover assembly according to any one of claims 1 to 9, wherein the box body (110) is provided with a maintenance port (1100), and the cover assembly is installed at the maintenance port (1100), and an installation chamber for installing the battery module is enclosed between the cover assembly and the box body (110).

11. The battery box according to claim 10, characterized in that: The box body (110) is provided with a protruding enclosure structure (1130), and the enclosure structure (1130) is arranged outside the maintenance port (1100) and the cover assembly.

12. The battery box according to claim 10 or 11, characterized in that: The battery box further includes a second electrical component (300), which is disposed in the box body (110) and electrically connected to the battery module; The second electrical component (300) is at least partially arranged opposite to the maintenance opening (1100); and / or the maintenance opening (1100) allows the second electrical component (300) to pass through.

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