Battery box body and battery

Abstract

The utility model relates to a battery box and a battery. The battery box body comprises a box body assembly, the upper cover assembly covers the box body assembly in the first direction, a containing cavity is defined by the upper cover assembly and the box body assembly, the upper cover assembly comprises an upper cover body and reinforcing ribs, the upper cover body is connected with the box body assembly, and the reinforcing ribs are arranged on the upper cover body; the supporting assembly is located in the containing cavity, and the supporting assembly is connected between the box body assembly and the upper cover body; the orthographic projection of the reinforcing rib and the orthographic projection of the supporting assembly are arranged in a staggered mode in the first direction. The battery box body provided by the utility model has relatively high strength, and the impact resistance of the battery box body can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery box and a battery. Background Art

[0002] With the development of new energy technologies, batteries are being used more and more widely. Batteries include battery cases, which are used to accommodate battery components and provide support and protection for the battery components.

[0003] However, in the related art, the battery case is not strong enough and has poor ability to resist external impact, which affects the overall safety of the battery. Utility Model Content

[0004] The embodiments of the present application provide a battery case and a battery. The battery case has high strength, can improve the impact resistance of the battery case, and improve the overall safety performance of the battery.

[0005] An embodiment of the present application provides a battery case, comprising: a case assembly; an upper cover assembly, which is covered on the case assembly along a first direction and enclosed with the case assembly to form a accommodating cavity, the upper cover assembly comprising an upper cover body and reinforcing ribs, the upper cover body is connected to the case assembly, and the reinforcing ribs are arranged on the upper cover body; a support assembly, which is located in the accommodating cavity, and the support assembly is connected between the case assembly and the upper cover body; wherein, along the first direction, the orthographic projection of the reinforcing ribs is staggered with the orthographic projection of the support assembly.

[0006] In some embodiments, there are multiple support components, each support component is arranged at intervals from each other, the upper cover body includes a plurality of first mounting holes arranged at intervals, and the support component is connected to the upper cover body through the first mounting holes; along the first direction, each first mounting hole at least partially overlaps with the orthographic projection of one of the support components, and the orthographic projection of each first mounting hole and the orthographic projection of the reinforcing rib are staggered with each other.

[0007] In some embodiments, the upper cover body has a first area and a second area distributed along a second direction, and reinforcing ribs are provided in the first area and the second area, and the second direction intersects with the first direction; wherein, along the first direction, the orthographic projection area of ​​any reinforcing rib located in the first area is greater than the orthographic projection area of ​​any reinforcing rib located in the second area.

[0008] In some embodiments, a plurality of reinforcing ribs are distributed in rows on the upper cover body, a plurality of first mounting holes are distributed in rows on the upper cover body along a third direction, and in the second direction, each column of reinforcing ribs and each column of first mounting holes are distributed alternately.

[0009] In some embodiments, in the column direction, the center distance between the two outermost first mounting holes in each column of first mounting holes in the first region is L1, and the center distance between the two outermost first mounting holes in each column of first mounting holes in the second region is L2, and L2 is smaller than L1.

[0010] In some embodiments, the reinforcing rib is in the shape of a polygon, and an arc-shaped transition surface is provided at each vertex of each polygon. The reinforcing rib and the upper cover body are an integrated structure.

[0011] In some embodiments, the box body assembly includes: a frame, which is combined with the upper cover assembly to form a accommodating cavity; a partition structure, which is located in the accommodating cavity and connected to the frame, and the partition structure includes a crossbeam and a longitudinal beam, the crossbeam is arranged along the second direction, and the longitudinal beam is arranged along the third direction, the crossbeam is connected to the longitudinal beam, and the support assembly is connected to the longitudinal beam, and a plurality of sub-chambers are enclosed between the crossbeam, the longitudinal beam and the frame, and the sub-chambers are used to accommodate battery assemblies.

[0012] In some embodiments, the side of the frame away from the upper cover assembly is a step structure, and the European step structure includes a first part and a second part that are interconnected and respectively have an L-shaped structure, and the second part is located on the side of the first part away from the upper cover assembly. The box assembly also includes: a heat dissipation structure that matches the shape of the first part and is overlapped and connected; a guard plate structure that is at least partially located in the second part and is against the heat dissipation structure.

[0013] In some embodiments, the battery case further includes a second seal, the second seal is located between the case assembly and the upper cover body, and the second seal is connected to the case assembly.

[0014] An embodiment of the present application also provides a battery, comprising any of the above-mentioned battery boxes and a battery assembly located in the accommodating cavity.

[0015] The battery case provided in the embodiment of the present application can improve the strength and mode of the upper cover body by setting the reinforcing ribs, and can improve the overall strength of the battery case by setting the reinforcing ribs and the support assembly on the upper cover assembly, so as to buffer the battery case from being squeezed by mechanical forces. Along the first direction, the orthographic projection of the support assembly and the orthographic projection of the reinforcing ribs are staggered, so that when the battery case is subjected to mechanical forces, the mechanical forces can be buffered and propagated through the cooperation of the reinforcing ribs and the support assembly, and the support of the upper cover assembly by the support assembly can also slow down the tendency of the upper cover body to undergo plastic deformation.

[0016] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0018] Figure 1 is an exploded schematic diagram of an embodiment of a battery box of the present application;

[0019] Figure 2 It is a structural schematic diagram of an embodiment of a battery box of the present application;

[0020] Figure 3 It is a structural schematic diagram of an upper cover assembly in an embodiment of a battery box of the present application;

[0021] Figure 4 It is a structural schematic diagram of a box assembly in an embodiment of a battery box of the present application;

[0022] Figure 5 is an exploded schematic diagram of a partition structure in an embodiment of a battery box of the present application;

[0023] Figure 6 It is a structural schematic diagram of the guard plate structure in an embodiment of the battery box of the present application;

[0024] Figure 7 is a cross-sectional schematic diagram of an embodiment of a battery box of the present application;

[0025] Figure 8 yes Figure 7 A magnified schematic diagram of part A;

[0026] Fig. 9 yes Figure 7 A magnified schematic diagram of part B;

[0027] Fig.10 1 is a cross-sectional schematic diagram of a partial structure of a battery case in an embodiment of the present application.

[0028] Description of Figure Numbers:

[0029] 100 cabinet assembly; X first direction; Y second direction; Z third direction;

[0030] 110 frame; 111 step structure; 1111 first part; 1112 second part; 112 chamber;

[0031] 120 partition structure; 121 cross beam; 122 longitudinal beam; 123 sub-chamber; 1231 bracket supporting tray;

[0032] 200 upper cover assembly;

[0033] 210 accommodating chamber;

[0034] 220 upper cover body; 221 first mounting hole; 222 first area; 223 second area;

[0035] 230 reinforcement;

[0036] 300 support components;

[0037] 400 heat dissipation structure;

[0038] 500 guard plate structure; 510 raised platform;

[0039] 600 first seal;

[0040] 700 Second seal.

[0041] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0042] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0043] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0044] With the development of new energy technology, batteries are used more and more widely. Batteries include battery boxes, which are used to accommodate battery components and support and protect battery components. However, in the related art, the battery box is not strong enough and has poor resistance to external impact.

[0045] Based on the above considerations, in order to solve the problem that a battery case has insufficient strength and poor ability to resist external impact, a battery case and a battery are proposed.

[0046] Please refer to Figures 1 to 4 , Figure 1 is an exploded schematic diagram of an embodiment of a battery box of the present application, Figure 2 is a schematic structural diagram of a battery box according to an embodiment of the present application, Figure 3 This is a schematic diagram of the structure of the upper cover assembly in an embodiment of the battery box of the present application. Figure 4 It is a structural schematic diagram of the box assembly in an embodiment of the battery box of the present application.

[0047] The embodiment of the present application provides a battery case, including a case assembly 100, an upper cover assembly 200, a support assembly 300, and a first sealing member 600. The upper cover assembly 200 is covered on the case assembly 100 along a first direction X and encloses the case assembly 100 to form a receiving cavity 210. The upper cover assembly 200 includes an upper cover body 220 and a reinforcing rib 230. The upper cover body 220 is connected to the case assembly 100, and the reinforcing rib 230 is arranged on the upper cover body 220. The support assembly 300 is located in the receiving cavity 210, and the support assembly 300 is connected between the case assembly 100 and the upper cover body 220. The first sealing member 600 is arranged on one side of the support assembly 300 close to the upper cover body 220, wherein, along the first direction X, the orthographic projection of the reinforcing rib 230 is staggered with the orthographic projection of the support assembly 300.

[0048] The number of the reinforcing rib 230 may be one or more. When there are more than one reinforcing rib 230 , the plurality of reinforcing ribs 230 are spaced apart from each other.

[0049] The reinforcing rib 230 may be disposed on the upper cover body 220 by welding or integral molding. Of course, the upper cover body 220 may also be formed by being recessed along the first direction X into the accommodating cavity 210 or away from the accommodating cavity 210 .

[0050] The staggered arrangement of the orthographic projection of the reinforcing rib 230 and the orthographic projection of the supporting assembly 300 can be understood as the orthographic projection of the reinforcing rib 230 and the orthographic projection of the supporting assembly 300 do not overlap each other.

[0051] Optionally, the box body assembly 100 and the upper cover assembly 200 are both made of aluminum alloy, which can meet the lightweight requirements of the battery box, and the upper cover assembly 200 is formed in one piece by stamping of aluminum alloy.

[0052] The upper cover body 220 and the box assembly 100 may be provided with a plurality of matching mounting holes for achieving connection between the two.

[0053] When the box assembly 100 and the upper cover assembly 200 are not in a state of being enclosed to form the accommodating cavity 210, the first sealing member 600 is protruded from the supporting assembly 300 along the first direction X, and the first sealing member 600 has an elastic deformation. When the upper cover assembly 200 is covered on the box assembly 100, the upper cover body 220 of the upper cover assembly 200 will compress the first sealing member 600 to improve the sealing effect.

[0054] Optionally, the upper cover body 220 is a rectangular parallelepiped structure, and the upper cover body 220 may be provided with folded edges along the first direction X toward the box assembly 100 to increase the strength of the upper cover body 220 and prevent the upper cover body 220 from being deformed during the installation process.

[0055] The battery case provided in the embodiment of the present application can improve the strength and mode of the upper cover body 220 by setting the reinforcing ribs 230. The upper cover assembly 200 is provided with the reinforcing ribs 230 and the support assembly 300 can improve the overall strength of the battery case and buffer the battery case from being squeezed by mechanical forces. Along the first direction X, the orthographic projection of the support assembly 300 and the orthographic projection of the reinforcing ribs 230 are staggered, so that when the battery case is subjected to mechanical force, the force is difficult to propagate along the horizontal and vertical directions of the battery case, and the support of the support assembly 300 to the upper cover assembly 200 can also slow down the tendency of the upper cover body 220 to undergo plastic deformation. The provision of the first sealing member 600 improves the sealing performance of the support assembly 300 and the upper cover body 220.

[0056] In some embodiments, there are multiple support assemblies 300, each support assembly 300 is arranged at intervals from each other, the upper cover body 220 includes a plurality of first mounting holes 221 arranged at intervals, and the support assembly 300 is connected to the upper cover body 220 through the first mounting holes 221; along the first direction X, each first mounting hole 221 at least partially overlaps with the orthographic projection of one of the support assemblies 300, and the orthographic projection of each first mounting hole 221 and the orthographic projection of the reinforcing rib 230 are staggered with each other.

[0057] The first mounting hole 221 cooperates with the axis of the support assembly 300, and a second mounting hole can be provided on the side of the support assembly 300 close to the upper cover body 220, which can be bolted to the first mounting hole 221 and the second mounting hole, and an annular seal can be installed on the periphery of the support assembly 300.

[0058] The battery case provided in the embodiment of the present application realizes the connection and support of the support assembly 300 and the upper cover body 220 through the first mounting hole 221, so that the supporting strength of the support assembly 300 is guaranteed. The staggered arrangement of the orthographic projection of the first mounting hole 221 and the orthographic projection of the reinforcing rib 230 can further make the support assembly 300 and the reinforcing rib 230 staggered, thereby improving the impact resistance of the battery case.

[0059] In some embodiments, the upper cover body 220 has a first area 222 and a second area 223 distributed along a second direction Y, and reinforcing ribs 230 are disposed in both the first area 222 and the second area 223, and the second direction Y intersects with the first direction X. In particular, along the first direction X, the orthographic projection area of ​​any reinforcing rib 230 located in the first area 222 is greater than the orthographic projection area of ​​any reinforcing rib 230 located in the second area 223.

[0060] The battery case provided in the embodiment of the present application has different settings of the sizes of the positive projection areas of the reinforcing ribs 230 in the first area 222 and the second area 223, so that the settings of the reinforcing ribs 230 can be adapted to the areas of the first area 222 and the second area 223, so that the positions of the reinforcing ribs 230 match the positions of the battery components inside the battery case, thereby enhancing the protection of the battery components.

[0061] In some embodiments, multiple reinforcing ribs 230 are distributed in rows and columns on the upper cover body 220, and multiple first mounting holes 221 are distributed in rows and columns along the third direction Z on the upper cover body 220. In the second direction Y, each column of reinforcing ribs 230 and each column of first mounting holes 221 are distributed alternately.

[0062] The battery case provided in the embodiment of the present application has the reinforcing ribs 230 distributed in rows and columns, the first mounting holes 221 distributed in rows and columns, and each column of reinforcing ribs 230 and each column of first mounting holes 221 alternately distributed, so that the reinforcing ribs 230 and the support assembly 300 can more evenly disperse the impact force received, improve the resistance to external forces, and better protect the battery components inside the battery case.

[0063] In some embodiments, the number of columns of the reinforcing ribs 230 located in the second region 223 and the number of columns of the first mounting holes 221 are one, and the first mounting holes 221 located in the second region 223 are disposed close to the first region 222 .

[0064] In some embodiments, in the column direction, the center distance between the two outermost first mounting holes 221 in each column of first mounting holes 221 located in the first area 222 is L1, and the center distance between the two outermost first mounting holes 221 in each column of first mounting holes 221 located in the second area 223 is L2, and L2 is smaller than L1.

[0065] The battery case provided in the embodiment of the present application makes the arrangement of the first mounting holes 221 more in line with the actual situation and has strong practicality by setting the outermost distance of each column of the first mounting holes 221 in the first area 222 and the second area 223.

[0066] In some embodiments, located in the first area 222, a plurality of first mounting holes 221 are arranged at intervals on the periphery of at least one reinforcing rib 230, and along the first direction X, a center line connecting the orthographic projections of the plurality of first mounting holes 221 forms a polygon, and a ratio of an orthographic projection area of ​​the reinforcing rib 230 within the polygon to an area of ​​the polygon is 7:10 to 9:10.

[0067] The battery case provided in the embodiment of the present application is configured such that the orthographic projection area of ​​the polygon enclosed by the first mounting hole 221 and the orthographic projection area of ​​the reinforcing rib 230 are arranged and positioned in such a way that the impact force and vibration exerted on the battery case can be better buffered, thereby alleviating the squeezing of the battery assembly by external forces.

[0068] In some embodiments, the reinforcing rib 230 is in the shape of a polygon, and an arc-shaped transition surface is provided at each vertex of each polygon. The reinforcing rib 230 and the upper cover body 220 are an integrated structure.

[0069] The battery case provided in the embodiment of the present application can facilitate the manufacture of the upper cover body 220 by setting the top corners of the reinforcing ribs 230 as arc-shaped transition surfaces.

[0070] In some embodiments, the box assembly 100 includes a frame 110 and a partition structure 120. The frame 110 and the upper cover assembly 200 enclose a receiving cavity 210, the partition structure 120 is located in the receiving cavity 210, both ends of the partition structure 120 are connected to the frame 110, and a plurality of sub-chambers 123 are enclosed between the partition structure 120 and the frame 110, and the sub-chambers 123 are used to accommodate the battery assembly, and the support assembly 300 is connected to the partition structure 120.

[0071] Optionally, the frame 110 and the partition structure 120 are aluminum extruded frame 110, and the frame 110 and the partition structure 120 are welded together. The frame 110 may also be provided with connector mounting holes for mounting high and low voltage connectors and MSD (Metal-Oxide-Semiconductor Field-Effect Transistor) and the like.

[0072] The frame 110 and the partition structure 120 are connected by welding.

[0073] The battery components include but are not limited to battery modules, BMS (Battery Management System) components, etc., wherein a sub-chamber 123 is used to accommodate the BMS components, and a bracket tray 1231 is provided in the sub-chamber 123. The BMS components are first connected to the bracket tray 1231, and then the bracket tray 1231 is connected to the heat dissipation structure 400, which can reduce the solder joints between the heat dissipation structure 400 and the BMS components, and ensure that the heat dissipation structure 400 has good flatness.

[0074] The battery case provided in the embodiment of the present application can accommodate multiple battery modules by disposing the partition structure 120, so as to increase the endurance of the corresponding electrical device.

[0075] Please refer to Figure 5 As shown, Figure 5 1 is an exploded schematic diagram of a partition structure in an embodiment of a battery box of an embodiment of the present application. In some embodiments, the partition structure 120 includes a crossbeam 121 and a longitudinal beam 122. The crossbeam 121 is arranged along the second direction Y, and the longitudinal beam 122 is arranged along the third direction Z. The crossbeam 121 is connected to the longitudinal beam 122, and the support assembly 300 is connected to the longitudinal beam 122. The third direction Z is arranged to intersect with the first direction X and the second direction Y.

[0076] Therein, a plurality of fixed wiring harness components are also provided on the cross beam 121 and the longitudinal beam 122 for fixing the wires.

[0077] The side of the cross beam 121 close to the longitudinal beam 122 has a groove, and the side of the longitudinal beam 122 close to the cross beam 121 also has a concave portion, and the depth of the groove of the cross beam 121 along the first direction X is less than the depth of the concave portion of the longitudinal beam 122. The above arrangement has little effect on the strength of the cross beam 121 to improve the support effect of the cross beam 121.

[0078] The battery box provided in the embodiment of the present application is arranged on the longitudinal beam 122 through the support assembly 300, which can avoid the fixed wiring harness components and prevent the support assembly 300 from affecting the setting of the wiring harness fixing components, while also ensuring support for the upper cover body 220.

[0079] Please refer to Figures 6 to 10 As shown, Figure 6 This is a schematic diagram of the structure of the guard plate structure in an embodiment of the battery box of the present application. Figure 7 is a cross-sectional schematic diagram of an embodiment of a battery box of the present application, Figure 8 yes Figure 7 The enlarged schematic diagram of part A in the figure. Fig. 9 yes Figure 7 The enlarged schematic diagram of part B in the figure is as follows: Fig.101 is a cross-sectional schematic diagram of a partial structure of a battery case in an embodiment of the present application.

[0080] In some embodiments, the box assembly 100 further includes a heat dissipation structure 400 and a guard plate structure 500. The heat dissipation structure 400 is connected to the side of the frame 110 away from the upper cover assembly 200 in the first direction X. The guard plate structure 500 is located on the side of the heat dissipation structure 400 away from the accommodating cavity 210 in the first direction X, and the guard plate structure 500 is connected to the frame 110.

[0081] Optionally, the guard plate structure 500 is provided with a plurality of raised platforms 510 on a side close to the frame 110 , and the raised platforms 510 are used to contact the cross beams 121 and the longitudinal beams 122 of the partition structure 120 .

[0082] The battery case provided in the embodiment of the present application can provide reinforced support for the battery components inside the battery case through the guard plate structure 500, thereby increasing the strength of the battery case.

[0083] Please refer to Figure 6 As shown, Figure 6 It is a cross-sectional schematic diagram of the component structure of a battery box in an embodiment of the present application.

[0084] In some embodiments, one end of the frame 110 away from the upper cover assembly 200 is a step structure 111 , and the heat dissipation structure 400 and the guard plate structure 500 are connected to the step structure 111 .

[0085] The battery box provided in the embodiment of the present application can make the connection between the heat dissipation structure 400, the guard plate structure 500 and the frame 110 more reliable through the setting of the step structure 111, thereby ensuring the connection strength between the heat dissipation structure 400 and the frame 110 and meeting the gravity requirements for supporting the battery assembly.

[0086] In some embodiments, the step structure 111 includes a first portion 1111 and a second portion 1112. The first portion 1111 is an L-shaped structure, and the first portion 1111 is overlapped and connected to the heat dissipation structure 400. The second portion 1112 is an L-shaped structure, and the second portion 1112 is connected to the first portion 1111, and at least part of the guard plate structure 500 is located in the second portion 1112 and abuts against the heat dissipation structure 400.

[0087] The first portion 1111 and the heat dissipation structure 400 may be connected by friction stir welding.

[0088] The battery case provided in the embodiment of the present application can make the connection between the heat dissipation structure 400, the guard plate structure 500 and the frame 110 tighter through the arrangement of the first part 1111 and the second part 1112, thereby ensuring the load-bearing requirements for the battery assembly.

[0089] In some embodiments, the partition structure 120 and the frame 110 include a plurality of chambers 112 therein.

[0090] The battery case provided in the embodiment of the present application can increase the strength of the frame 110 and the partition structure 120 by providing a plurality of chambers 112 inside the frame 110 , and can meet the requirement of lightweighting the battery case.

[0091] In some embodiments, the battery case further includes a second seal 700 , which is located between the case assembly 100 and the upper cover body 220 , and the second seal 700 is connected to the case assembly 100 .

[0092] The battery case provided in the embodiment of the present application improves the sealing between the upper cover body 220 and the case assembly 100 by disposing the second sealing member 700, thereby preventing the battery case from being connected to the outside world and ensuring the normal operation of the battery assembly.

[0093] An embodiment of the present application provides a battery, comprising: a battery case according to any one of the above items and a battery assembly, wherein the battery assembly is located in a receiving cavity 210 .

[0094] The battery provided in the embodiment of the present application can meet the requirements of overall strength and rigidity of the battery through the provision of a battery case, while meeting the requirements of lightweighting the battery and reducing the load on the electrical device.

[0095] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery box, characterized in that: include: Box components; An upper cover assembly is arranged on the box assembly along a first direction and enclosed with the box assembly to form a receiving cavity, the upper cover assembly comprises an upper cover body and a reinforcing rib, the upper cover body is connected to the box assembly, and the reinforcing rib is arranged on the upper cover body; A support assembly is located in the accommodating cavity, and the support assembly is connected between the box assembly and the upper cover body; A first sealing member is provided through a side of the support assembly close to the upper cover body; Wherein, along the first direction, the orthographic projection of the reinforcing rib and the orthographic projection of the supporting assembly are staggered.

2. The battery box according to claim 1, characterized in that: There are multiple support assemblies, each of which is arranged at intervals from each other, and the upper cover body includes multiple first mounting holes arranged at intervals, and the support assemblies are connected to the upper cover body through the first mounting holes; Along the first direction, each of the first mounting holes at least partially overlaps with an orthographic projection of one of the supporting components, and the orthographic projection of each of the first mounting holes and the orthographic projection of the reinforcing rib are staggered with each other.

3. The battery box according to claim 2, characterized in that: The upper cover body has a first area and a second area distributed along a second direction, the reinforcing ribs are arranged in the first area and the second area, and the second direction intersects with the first direction; Wherein, along the first direction, the orthographic projection area of ​​any of the reinforcing ribs located in the first region is greater than the orthographic projection area of ​​any of the reinforcing ribs located in the second region.

4. The battery box according to claim 3, characterized in that: The plurality of reinforcing ribs are distributed in rows on the upper cover body, the plurality of the first mounting holes are distributed in rows on the upper cover body along a third direction, and in the second direction, the reinforcing ribs in each column and the first mounting holes in each column are distributed alternately.

5. The battery box according to claim 4, characterized in that: In the column direction, the center distance between the two outermost first mounting holes in each column of the first mounting holes in the first area is L1, and the center distance between the two outermost first mounting holes in each column of the first mounting holes in the second area is L2, and L2 is smaller than L1.

6. The battery case according to any one of claims 1 to 5, characterized in that: The reinforcing rib is in the shape of a polygon, and an arc-shaped transition surface is provided at each vertex of the polygon. The reinforcing rib and the upper cover body are an integrated structure.

7. The battery box according to claim 3, characterized in that: The box assembly comprises: A frame, enclosing with the upper cover assembly to form a receiving cavity; A partition structure is located in the accommodating cavity and connected to the frame. The partition structure includes a crossbeam and a longitudinal beam. The crossbeam is arranged along the second direction, and the longitudinal beam is arranged along the third direction. The crossbeam is connected to the longitudinal beam, and the support assembly is connected to the longitudinal beam. A plurality of sub-chambers are enclosed between the crossbeam, the longitudinal beam and the frame, and the sub-chambers are used to accommodate battery assemblies.

8. The battery case according to claim 7, characterized in that: The side of the frame away from the upper cover assembly is a step structure, the step structure includes a first part and a second part that are connected to each other and are L-shaped structures, the second part is located on the side of the first part away from the upper cover assembly, and the box assembly also includes: A heat dissipation structure, matching the shape of the first part and being overlapped and connected; The guard plate structure is at least partially located in the second portion and abuts against the heat dissipation structure.

9. The battery box according to claim 1, characterized in that: The battery case further includes a second seal, which is located between the case assembly and the upper cover body, and is connected to the case assembly.

10. A battery, characterized in that: include: The battery case according to any one of claims 1 to 9; The battery assembly is located in the accommodating cavity.

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