Mounting structure, battery box and electric equipment

Abstract

The utility model relates to the technical field of batteries, and provides a mounting structure, a battery box and electric equipment. The mounting structure is used for the battery box and comprises a first mounting plate and at least one second mounting plate, the first mounting plate is used for fixing an end plate in the battery box, the second mounting plate is fixed relative to the position of the first mounting plate, and the second mounting plate is matched with the first mounting plate so as to enhance the fixing effect on the end plate. According to the mounting structure, the connection state of the end plate and the box body can be optimized, so that the mounting stability of the end plate in the battery box can be improved, and the safety performance of the battery box is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a mounting structure, a battery box and an electrical equipment. Background Art

[0002] When fixing a battery module in a battery box, generally, the battery module is fixed to the box body (such as the bottom plate) of the battery box through a connecting piece. Under dynamic load conditions, the stress of the bottom plate near the connecting piece is relatively high. After working for a long time, local deformation of the bottom plate is likely to occur, and even tearing cracks may appear.

[0003] Therefore, there is an urgent need to provide a mounting structure that can optimize the connection state between the end plate and the box body. Summary of the Utility Model

[0004] The utility model provides a mounting structure, a battery box and an electrical equipment. The mounting structure can optimize the connection state between the end plate and the box body, and further improve the mounting stability of the end plate in the battery box, so as to improve the safety performance of the battery box.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] According to the first aspect of the utility model, a mounting structure for a battery box is provided, including: a first mounting plate and at least one second mounting plate. The first mounting plate is used to fix the end plate in the battery box. The second mounting plate is fixed relative to the first mounting plate, and the second mounting plate cooperates with the first mounting plate to enhance the fixing effect on the end plate.

[0007] According to the second aspect of the utility model, a battery box is provided, including the mounting structure and the end plate provided in any technical solution of the above first aspect. The mounting structure includes a first mounting plate and a second mounting plate. The end plate is located on the top of the first mounting plate, and the end plate is fixed to the first mounting plate and the second mounting plate.

[0008] According to the third aspect of the utility model, an electrical equipment is provided, including the battery box provided in any technical solution of the above second aspect.

[0009] It should be noted that in the mounting structure provided in this embodiment, the end plate is placed on one side of the first mounting plate to be fixed on the surface of the first mounting plate. The second mounting plate is used in cooperation with the first mounting plate to reinforce the end plate in the box body and improve the fixing effect on the end plate. At the same time, because the second mounting plate is used in cooperation with the first mounting plate, the fixing position of the end plate and the mounting structure is not easy to deform and will not generate tearing cracks.

[0010] Therefore, the installation structure can optimize the connection state between the end plate and the box body, and further improve the installation stability of the end plate in the battery box, so as to enhance the safety performance of the battery box. Description of the Drawings

[0011] To better understand the present disclosure, reference may be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted to emphasize and clearly illustrate the technical features of the present disclosure. Additionally, related elements or components may have different arrangements as known in the art. Furthermore, in the drawings, the same reference numerals denote the same or similar components in each drawing. Among them:

[0012] Figure 1 is a schematic structural diagram of the battery box provided by the embodiment of the present application;

[0013] Figure 2 is Figure 1 a three-dimensional structural diagram of a partial structure in

[0014] Figure 3 is Figure 2 a structural diagram of the structure in

[0015] Figure 4 an exploded view of the installation structure provided by the embodiment of the present application;

[0016] Figure 5 is Figure 4 a structural diagram of the second mounting plate in

[0017] Figure 6 is Figure 5 a structural diagram of the second mounting plate in

[0018] Figure 7 is Figure 2 a further structural diagram of the structure in

[0019] Figure 8 a further exploded view of the installation structure provided by the embodiment of the present application;

[0020] Figure 9 is Figure 8 a structural diagram of the second mounting plate in

[0021] Figure 10 is Figure 9 a structural diagram of the second mounting plate in

[0022] The descriptions of the reference numerals are as follows:

[0023] 100. Mounting structure; 110. First mounting plate; 111. U-shaped plate; 112. Support edge; 113. First mounting hole; 114. First positioning hole; 120. Second mounting plate; 121. First plate body; 122. Second plate body; 123. Second positioning hole; 124. Second mounting hole; 130. Fixing assembly; 200. End plate; 300. Battery module; 400. Bottom plate; 500. Fastening assembly; 510. Bolt; 520. Nut. Detailed implementation manners

[0024] Next, the technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings in the exemplary embodiments of the present disclosure. The exemplary embodiments described herein are only for illustrative purposes and are not intended to limit the protection scope of the present disclosure. Therefore, it should be understood that various modifications and changes can be made to the exemplary embodiments without departing from the protection scope of the present disclosure.

[0025] In the description of the present disclosure, unless otherwise clearly defined and limited, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; the term "plurality" means two or more; the term "and / or" includes any combination and all combinations of one or more of the associated listed items. In particular, referring to "the / this" object or "one" object also intends to represent one of the possible multiple such objects.

[0026] Unless otherwise specified or described, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0027] Furthermore, in the description of the present disclosure, it should be understood that the orientation terms such as "upper", "lower", "inner", and "outer" described in the exemplary embodiments of the present disclosure are described from the angles shown in the accompanying drawings and should not be construed as limiting the exemplary embodiments of the present disclosure. It should also be understood that in the context, when referring to an element or feature being connected "on", "under", or "inside", "outside" another element (one or more), it can not only be directly connected "on", "under", or "inside", "outside" another (one or more) element, but also be indirectly connected "on", "under", or "inside", "outside" another (one or more) element through an intermediate element.

[0028] The embodiment of the present application provides a battery box. Please refer to Figures 1 to 3The structure shown, the battery box includes a mounting structure 100 and an end plate 200. It should be noted that the mounting structure 100 in the battery box provided by the embodiments of the present application can be the mounting structure 100 provided in any of the following technical solutions.

[0029] Please combine Figures 3 to 10 with reference to Figure 1 and Figure 2 : The mounting structure 100 includes a first mounting plate 110 and a second mounting plate 120. The end plate 200 is located on top of the first mounting plate 110, and the end plate 200 is fixed to the first mounting plate 110 and the second mounting plate 120. Accordingly, the end plate 200 in the battery box provided by the embodiments of the present application is fixed through the mounting structure 100 to improve the stability of the end plate 200 inside the battery box.

[0030] It should be noted that the end plate 200 is specifically installed inside the box body of the battery box. Exemplarily, the end plate 200 can be installed on the surface of the bottom plate through the mounting structure 100.

[0031] In one embodiment, please continue to refer to Figure 1 the structure shown. The battery box further includes a battery module 300 and a bottom plate 400. The bottom plate 400 has a supporting surface, and the battery module 300 is placed on the supporting surface; the mounting structure 100 and the end plate 200 are located at the same end of the battery module 300; the first mounting plate 110 has a top surface for fixing the end plate 200, and the top surface is located on the side of the supporting surface away from the bottom plate 400.

[0032] It should be understood that the side of each structural member close to the bottom plate 400 can be referred to as the bottom, and correspondingly, the side of each structural member away from the bottom plate 400 can be referred to as the top.

[0033] It should be noted that when the battery module 300 is installed on the bottom plate 400, the bottom plate 400 is generally in a flat state, and there may be a height difference greater than 0 between the bottom of the end plate 200 and the supporting surface. Exemplarily, the height difference can be more than 20 mm. The mounting structure 100 in this embodiment can compensate for the height difference between the bottom of the end plate 200 and the supporting surface in the vertical direction. Accordingly, as Figure 1 shown, it can also be understood that: there is a spacing between the top of the first mounting plate 110 and the supporting surface, and the spacing is greater than 0.

[0034] The embodiments of the present application further provide a mounting structure 100, and this mounting structure 100 is used for a battery box. Please combine Figure 1 and Figure 2 with reference to Figure 3As shown in the structure, the mounting structure 100 includes: a first mounting plate 110 and at least one second mounting plate 120, the first mounting plate 110 is used to fix the end plate 200 in the battery box, the second mounting plate 120 is fixed in position relative to the first mounting plate 110, and the second mounting plate 120 cooperates with the first mounting plate 110 to strengthen the fixing effect of the end plate 200.

[0035] It should be noted that in the mounting structure 100 provided in the embodiment of the present application, the end plate 200 is placed on one side of the first mounting plate 110 to be fixed on the surface of the first mounting plate 110, and the second mounting plate 120 is used in conjunction with the first mounting plate 110 to reinforce the end plate 200 in the box body and improve the fixing effect of the end plate 200. At the same time, since the second mounting plate 120 is used in conjunction with the first mounting plate 110, the fixed position of the end plate 200 and the mounting structure 100 is not easily deformed and will not produce tearing cracks.

[0036] Therefore, the installation structure 100 can optimize the connection state between the end plate 200 and the bottom plate 400, thereby improving the installation stability of the end plate 200 in the battery box, thereby improving the safety performance of the battery box.

[0037] It is worth noting that in the mounting structure 100 provided in the embodiment of the present application, the number of the second mounting plates 120 can be one or more. As an example, the number of the second mounting plates 120 is one, and the second mounting plate 120 cooperates with the first mounting plate 110 to effectively fix the end plate 200. Alternatively, the number of the second mounting plates 120 is multiple, and the multiple second mounting plates 120 are arranged at intervals along the length direction of the first mounting plate 110 to reinforce different fixing positions of the first mounting plate 110 and the end plate 200.

[0038] It is understandable that when there is only one second mounting plate 120, the number of structural parts in the battery box can be reduced to reduce the difficulty of assembly. When there are multiple second mounting plates 120, the use of multiple second mounting plates 120 can enhance the fixing effect of the first mounting plate 110, so that each second mounting plate 120 can effectively reinforce the first mounting plate 110 at the corresponding position.

[0039] The mounting structure 100 provided in the embodiment of the present application is used to be installed inside the box, and the end plate 200 is fixed relative to the box through the mounting structure 100. For example, the end plate 200 can be fixed to the bottom plate 400 of the box through the mounting structure 100. Please continue to refer to Figure 1 In the structure shown, if the bottom plate 400 is the bottom, and the end plate 200 is placed on the top of the first mounting plate 110 , the second mounting plate 120 is located on the side of the first mounting plate 110 away from the end plate 200 .

[0040] In one embodiment, please refer to Figure 4 the structure shown in FIG. Figure 4 . The first mounting plate 110 is a U-shaped plate 111, and the top of the U-shaped plate 111 is used to fix the end plate 200. The U-shaped plate 111 has a receiving space and an opening, and the opening is located at the bottom of the receiving space. The second mounting plate 120 is placed in the receiving space of the first mounting plate 110.

[0041] Among them, the first mounting plate 110 is a U-shaped plate 111, and the open side of the U-shaped plate 111 is used to face the mounting surface of the box body. For example, the opening of the U-shaped plate 111 is used to face the bottom plate 400. The end plate 200 can be fixed to the top of the U-shaped plate 111, and the U-shaped plate 111 can compensate for the height difference between the end plate 200 and the mounting surface. Exemplarily, the height difference can be more than 20 mm.

[0042] At the same time, as shown in Figure 4 FIG. Figure 4 , the U-shaped plate 111 has two side plates arranged oppositely. This structure can improve the stability of the first mounting plate 110 after being assembled inside the box body, and further improve the stability of the end plate 200 inside the box body.

[0043] It should be noted that in this embodiment, the second mounting plate 120 is located in the receiving space of the first mounting plate 110. This structure setting makes the second mounting plate 120 not occupy a separate space inside the box body, controls the overall size of the mounting structure 100 to be smaller, and can improve the space utilization rate inside the box body. Moreover, this structure setting makes the structure of the mounting structure 100 simple, can reduce the assembly difficulty, facilitate the assembly and electrical installation of the battery module 300, and reduce the manufacturing cost.

[0044] In one embodiment, please continue to refer to Figure 4 the structure shown in FIG. Figure 4 . Support edges 112 are provided on both sides of the U-shaped plate 111, and the first mounting plate 110 is used to be fixed to the bottom plate 400 of the battery box through the support edges 112. The support edges 112 can increase the contact area between the U-shaped plate 111 and the bottom plate 400, so as to facilitate the fixing of the first mounting plate 110 to the bottom plate 400 and improve the structural stability of the first mounting plate 110 after being fixed to the bottom plate 400.

[0045] In a specific embodiment, the first mounting plate 110 is an integrally formed structure to reduce the manufacturing difficulty. Exemplarily, the plate body forms the first mounting plate 110 through a bending process.

[0046] In one embodiment, the top surface of the second mounting plate 120 abuts against the top of the receiving space to enhance the reinforcement effect of the second mounting plate 120 on the first mounting plate 110 and prevent the first mounting plate 110 from tearing at the fixed position with the end plate 200.

[0047] In this embodiment, the top surface of the first mounting plate 110 is used to fix the end plate 200. Accordingly, the top surface of the second mounting plate 120 abuts against the top of the accommodating space (i.e., strengthens the top surface of the first mounting plate 110) to enhance the strengthening effect on the first mounting plate 110. If the side surface of the first mounting plate 110 is used to fix the end plate 200, at this time, the side surface of the second mounting plate 120 abuts against the U-shaped plate 111 to strengthen the side surface of the first mounting plate 110.

[0048] In one embodiment, please refer to Figure 5 and Figure 6 the structure shown in, the second mounting plate 120 includes a first plate body 121 and two second plate bodies 122 which are connected to the same side of the first plate body 121 and are arranged oppositely. The first plate body 121 and the two second plate bodies 122 cooperate to form a U-shaped structure.

[0049] In this embodiment, the second mounting plate 120 and the first mounting plate 110 form a double-U structure, and the second mounting plate 120 strengthens the first mounting plate 110 through the first plate body 121 to improve the strengthening effect.

[0050] When specifically setting, the first plate body 121 can abut against the top of the accommodating space to effectively strengthen the first mounting plate 110. It should be noted that along the vertical direction perpendicular to the bottom plate 400, the height of the second plate body 122 in the second mounting plate 120 affects the assembly of the first mounting plate 110 and the bottom plate 400, and affects the strengthening effect of the second mounting plate 120 on the first mounting plate 110. Preferably, when the second plate body 122 abuts against the top of the accommodating space, the second plate body 122 does not exceed the opening of the U-shaped plate 111, that is, the second mounting plate 120 can be completely placed in the accommodating space, so as to facilitate the fixing operation of the first mounting plate 110 and the bottom plate 400. At the same time, this structural setting enables the second mounting plate 120 not to occupy space alone in the box, controls the overall size of the mounting structure 100 to be relatively small, and can improve the space utilization rate in the box.

[0051] Accordingly, the mounting structure 100 can be applied to an environment where the arrangement spacing of the battery modules 300 is small, or the space size is tight, and the installation space is limited. Moreover, the mounting structure 100 can strengthen the supporting effect on the battery modules 300 and avoid large deformation of the battery modules 300 after long-term operation.

[0052] Furthermore, the height dimension of the second mounting plate 120 is the same as the depth dimension of the accommodation space. In other words, when the second plate body 122 abuts against the top of the accommodation space, the bottom edge of the second plate body 122 is flush with the opening of the first mounting plate 110, so that when the first mounting plate 110 is installed on the bottom plate 400, the second mounting plate 120 abuts against the bottom plate 400 synchronously, reducing the possibility of tearing or damage at the connection position between the support edge 112 and the U-shaped plate 111.

[0053] In addition, along the arrangement direction of the battery module 300 and the end plate 200, the width dimension of the second mounting plate 120 also affects the reinforcement effect of the second mounting plate 120 on the first mounting plate 110. Preferably, the width dimension of the second mounting plate 120 in this direction is equal to the dimension of the accommodation space in this direction. Accordingly, the second plate body 122 of the second mounting plate 120 respectively supports the side plates of the corresponding U-shaped plate 111, so as to further reduce the possibility of tearing or damage at the connection position between the support edge 112 and the U-shaped plate 111.

[0054] In one embodiment, the first mounting plate 110 is an aluminum alloy plate; the second mounting plate 120 is a steel plate.

[0055] For example, the steel grade of the second mounting plate 120 may be common low carbon steel or carbon steel, such as HC340LA or Q235.

[0056] The strengthening effect can be achieved by opening positioning holes on the top and side surfaces of the mounting structure 100. Figure 3 As shown, the first mounting plate 110 and the second mounting plate 120 are connected through a fixing assembly 130, and the fixing assembly 130 includes a fixing nut and a fixing screw; the first mounting plate 110 is provided with a first positioning hole 114, and the second mounting plate 120 is provided with a second positioning hole 123; the second mounting plate 120 is fixed with a fixing nut on the side away from the first mounting plate 110; the fixing screw passes through the first positioning hole 114 and the second positioning hole 123 from the side of the first mounting plate 110 away from the second mounting plate 120, and is threadedly connected with the fixing nut.

[0057] It is understandable that the second positioning hole 123 can ensure that the second mounting plate 120 corresponds to the sheet metal hole of different materials (i.e., the first positioning hole 114) during the actual welding process, and is fastened using a fastening screw. Specifically, since the materials of the first mounting plate 110 and the second mounting plate 120 are different, when the two are connected by the fixing assembly 130, the fixing nut is first welded to the second mounting plate 120 by a welding process, and then the fixing screw is threadedly connected to the fixing nut by a fixing screw.

[0058] It should be noted that, compared with the form of simple screw connection between the bolt and the nut where the nut is not fixed, the structural arrangement in the embodiments of the present application can improve the stability after the connection between the first mounting plate 110 and the second mounting plate 120, so as to enhance the reinforcement effect of the second mounting plate 120 on the first mounting plate 110, and further enhance the reinforcement effect of the mounting structure 100 on the end plate 200.

[0059] Preferably, the center of the fixing nut coincides with the center of the second positioning hole 123, so as to facilitate the threaded connection between the fixing screw and the fixing nut and reduce the assembly difficulty.

[0060] In a specific embodiment, please refer to Figure 5 and Figure 6 for reference. Figure 3 , the second mounting plate 120 is fixed to the top of the accommodating space through the first plate body 121. In another specific embodiment, please refer to Figure 9 and Figure 10 for reference. Figure 7 and Figure 8 The second mounting plate 120 is fixed to the side of the accommodating space through the second plate body 122.

[0061] In one embodiment, the second mounting plate 120 is an integrally formed structure to reduce the preparation difficulty. Exemplarily, the plate body is formed into the second mounting plate 120 as shown in Figure 9 .

[0062] Please continue to refer to Figures 1 to 3 for the shown structure. The battery box provided by the embodiments of the present application further includes a fastening assembly 500. The end plate 200 is fixed to the first mounting plate 110 and the second mounting plate 120 through the fastening assembly 500 to enhance the fastening effect of the end plate 200 on the surface of the mounting structure 100 and to achieve the detachable operation between the first mounting plate 110 and the second mounting plate 120.

[0063] It should be noted that there are various possibilities for the structure of the fastening assembly 500. In a specific embodiment, as shown in Figure 3 , the fastening assembly 500 includes a bolt 510 and a nut 520.

[0064] In one embodiment, as shown in Figures 4 to 6 and Figures 8 to 10In the structure shown, the first mounting plate 110 is provided with a first mounting hole 113, the second mounting plate 120 is provided with a second mounting hole 124, and the first mounting hole 113 at least partially covers part of the second mounting hole 124 in the orthographic projection of the second mounting plate 120. The bolt 510 includes a screw rod and a nut provided at one end of the screw rod, the nut abuts against the side of the end plate 200 away from the mounting structure 100, and the screw rod passes through the end plate 200, the first mounting hole 113 of the first mounting plate 110, and the second mounting hole 124 of the second mounting plate 120; the nut 520 is fixed to the side of the second mounting plate 120 away from the first mounting plate 110, and is threadedly connected with the screw rod.

[0065] It should be noted that, in the present embodiment, the fastening assembly 500 can penetrate the first mounting hole 113 on the first mounting plate 110 and the second mounting hole 124 on the second mounting plate 120 to simultaneously fasten the end plate 200 to the surface of the mounting structure 100, thereby enhancing the reinforcement effect of the second mounting plate 120 on the first mounting plate 110, and further enhancing the reinforcement effect of the mounting structure 100 on the end plate 200.

[0066] Preferably, the center of the first mounting hole 113 coincides with the center of the second mounting hole 124 to reduce the difficulty of assembling the fastening assembly 500 .

[0067] It is worth noting that the number of fastening assemblies 500 affects the number of openings on the first mounting plate 110 and the second mounting plate 120. For example, Figure 1 and Figure 2 As shown, each end plate 200 is fixed to the mounting structure 100 by two sets of fastening assemblies 500 , and thus, the first mounting plate 110 needs to be provided with two first mounting holes 113 , and the second mounting plate 120 needs to be provided with two corresponding second mounting holes 124 .

[0068] Similarly, since the materials of the first mounting plate 110 and the second mounting plate 120 are different, when the two are connected by the fastening assembly 500, the nut 520 can be first welded to the second mounting plate 120 using a welding process, and then threadedly connected to the nut 520 through a screw rod.

[0069] It should be noted that, compared with the simple threaded connection between the bolt and the nut in the related art, in which the nut is not fixed, the structural setting in the embodiment of the present application can enhance the reinforcement effect of the mounting structure 100 on the end plate 200 .

[0070] The embodiment of the present application also provides an electric device, which includes a battery box provided by any of the above technical solutions.

[0071] It should be noted that the end plate 200 in the battery box installation structure 100 is placed on one side of the first mounting plate 110 and fixed on the surface of the first mounting plate 110. The second mounting plate 120 is used in cooperation with the first mounting plate 110 to reinforce the end plate 200 in the box and improve the fixing effect on the end plate 200. At the same time, since the second mounting plate 120 is used in cooperation with the first mounting plate 110, the fixing position of the end plate 200 and the mounting structure 100 is not easily deformed and no tearing cracks will occur.

[0072] Accordingly, the service life and safety performance of the electrical equipment provided by the embodiments of the present application can be improved.

[0073] After considering the specification and practicing the disclosed utility model creation herein, those skilled in the art will readily conceive of other embodiments of the present disclosure. The present disclosure is intended to cover any variations, uses, or adaptations of the present utility model, which follow the general principles of the present disclosure and include well-known common general knowledge or conventional technical means in the technical field not disclosed by the present disclosure. The specification and exemplary embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the appended claims.

[0074] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The protection scope of the present disclosure is only limited by the appended claims.

Claims

1. An installation structure for a battery box, characterized in that, include: A first mounting plate and at least one second mounting plate, wherein the first mounting plate is used to fix the end plate in the battery box, the second mounting plate is fixed relative to the first mounting plate, and the second mounting plate cooperates with the first mounting plate to strengthen the fixing effect on the end plate.

2. The installation structure according to claim 1, wherein The first mounting plate is a U-shaped plate, the top of which is used to fix the end plate; the U-shaped plate has a receiving space and an opening, and the opening is located at the bottom of the receiving space; the second mounting plate is placed in the receiving space of the first mounting plate.

3. The installation structure according to claim 2, characterized in that, Support edges are provided on both sides of the U-shaped plate, and the first mounting plate is used to be fixed to the bottom plate of the battery box through the support edges.

4. The installation structure according to claim 2, characterized in that, The top surface of the second mounting plate abuts against the top of the accommodating space.

5. The installation structure according to claim 3, characterized in that, The second mounting plate includes a first plate body and two second plates connected to the same side of the first plate body and arranged opposite to each other, the first plate body and the two second plates cooperate to form a U-shaped structure; wherein: The second mounting plate is fixed to the top of the accommodation space through the first plate body; And / or, the second mounting plate is fixed to a side portion of the accommodating space through the second plate body.

6. The mounting structure according to claim 5, characterized in that, The first mounting plate and the second mounting plate are connected via a fixing assembly, wherein the fixing assembly comprises a fixing nut and a fixing screw; The first mounting plate is provided with a first positioning hole, and the second mounting plate is provided with a second positioning hole; the second mounting plate is fixed with the fixing nut on the side away from the first mounting plate, and the center of the fixing nut coincides with the center of the second positioning hole; the fixing screw passes through the first positioning hole and the second positioning hole from the side of the first mounting plate away from the second mounting plate, and is threadedly connected with the fixing nut.

7. The mounting structure according to any one of claims 1-6, characterized in that, The first mounting plate is provided with a first mounting hole, the second mounting plate is provided with a second mounting hole, and the first mounting hole is projected on the second mounting plate to at least partially cover a portion of the second mounting hole.

8. The mounting structure according to any one of claims 1-6, characterized in that, The first mounting plate is an aluminum alloy plate; the second mounting plate is a steel plate.

9. A battery box, characterized in that, It comprises the mounting structure and end plate as described in any one of claims 1 to 8, wherein the mounting structure comprises a first mounting plate and a second mounting plate, the end plate is located on the top of the first mounting plate, and the end plate is fixed to the first mounting plate and the second mounting plate.

10. The battery box according to claim 9, characterized in that, It also includes a battery module and a base plate, wherein the base plate has a support surface; the battery module, the mounting structure and the end plate are all placed on the support surface, and there is a spacing between the top of the first mounting plate and the support surface, and the spacing is greater than 0.

11. The battery box according to claim 9 or 10, characterized in that, The battery box further includes a fastening assembly, and the end plate is fixed to the first mounting plate and the second mounting plate through the fastening assembly.

12. The battery box according to claim 11, characterized in that, The fastening assembly includes a bolt and a nut, the bolt includes a screw rod and a nut provided at one end of the screw rod, the nut abuts against the side of the end plate away from the mounting structure, the screw rod passes through the end plate, the first mounting hole of the first mounting plate and the second mounting hole of the second mounting plate; the nut is fixed to the side of the second mounting plate away from the first mounting plate and is threadedly connected to the screw rod.

13. An electrical device, characterized in that, Comprising a battery box as described in any one of claims 9-12.

Images