CN216818520U - Battery package box, battery package and electric automobile - Google Patents

Abstract

The utility model relates to the technical field of batteries, and provides a battery pack box body, a battery pack and an electric automobile. This battery package box includes: the box body is provided with a connecting plate; the connecting plate is provided with an installation part detachably connected with the connecting plate, the installation part and the connecting plate form a hoisting point structure, and the hoisting point structure is used for fixing the box body and an external structure. In the battery package box that this application provided, the connecting plate cooperates with the installed part, form the hoisting point structure of locating the case body, the fixed operation with exterior structure is realized to this hoisting point structure of case body accessible, and simultaneously, the installed part can be dismantled with the connecting plate and be connected, this structural setting can realize the nimble connection between case body and the exterior structure, and, can make the battery package box that this application provided match different exterior structure, widen the applicable scene of the battery package box that this application provided, promote battery package box and electric automobile's suitability.

Description

Battery package box, battery package and electric automobile

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery pack box body, a battery pack and an electric automobile.

Background

The existing battery pack is generally directly provided with a lifting lug outside a battery pack box body, and the lifting lug is connected with other structures in the battery car.

However, the lifting lug and the battery pack case are generally in an integrally extruded structure, and the structure is inconvenient for matching the battery pack case with other structures of different models or sizes.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery pack box body, a battery pack and an electric automobile, so that the battery pack box body can be flexibly connected with other structures.

In order to achieve the purpose, the utility model provides the following technical scheme:

according to a first aspect of the present invention, there is provided a battery pack case comprising:

the box body is provided with a connecting plate; the connecting plate is provided with an installation part detachably connected with the connecting plate, the installation part and the connecting plate form a hoisting point structure, and the hoisting point structure is used for fixing the box body and an external structure.

In the battery package box that this application provided, the connecting plate cooperates with the installed part, form the hoisting point structure of locating the case body, the fixed operation with exterior structure is realized to this hoisting point structure of case body accessible, and simultaneously, the installed part can be dismantled with the connecting plate and be connected, this structural setting can realize the nimble connection between case body and the exterior structure, and, can make the battery package box that this application provided match different exterior structure, widen the applicable scene of the battery package box that this application provided, promote battery package box and electric automobile's suitability.

According to a second aspect of the present invention, there is provided a battery pack comprising the battery pack case provided in any of the above technical aspects.

In the battery package that this application provided, the connecting plate cooperates with the installed part, form the hoisting point structure of locating the case body, the fixed operation with exterior structure is realized to this hoisting point structure of case body accessible, and simultaneously, the installed part can be dismantled with the connecting plate and be connected, this structural setting can realize the nimble connection between case body and the exterior structure, and, can make the battery package that this application provided match different exterior structures, widen the applicable scene of the battery package that this application provided, promote battery package box and electric automobile's suitability.

According to a third aspect of the present invention, there is provided an electric vehicle, comprising the battery pack provided in any of the above-mentioned technical solutions.

In the electric automobile that this application provided, the connecting plate cooperates with the installed part, form the hoisting point structure of locating the case body, this hoisting point structure of case body accessible realizes with electric automobile's fixed operation, and simultaneously, the installed part can be dismantled with the connecting plate and be connected, this structure setting can realize the nimble connection between battery package and the electric automobile, and, can make the battery package that this application provided match different electric automobile, widen the applicable scene of battery package box, promote battery package box and electric automobile's suitability.

Drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views. Wherein:

fig. 1 is a schematic structural diagram of a battery pack case provided in an embodiment of the present application;

FIG. 2 is an exploded view of the partial structure of FIG. 1;

fig. 3 is a schematic structural diagram of a transition plate in a battery pack case provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a lifting lug in a battery pack case provided in an embodiment of the present application.

The reference numerals are explained below:

100. a tank body; 110. an annular frame; 120. a partition beam; 200. a connecting plate; 210. an accommodating portion; 220. a through hole; 230. welding positions are fixed on two sides; 300. a mounting member; 310. a bolt; 320. a nut; 400. lifting lugs; 410. mounting plate, 411, middle part; 412. a fixed part; 420. a bending plate; 430. and (4) flange edges.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, unless explicitly specified or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.

The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.

Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in this context, when an element or feature is referred to as being "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.

In a first aspect, an embodiment of the present application provides a battery pack case. Fig. 1 is a schematic structural diagram of a battery pack case provided in an embodiment of the present application. As shown in fig. 1, the battery pack case includes:

the box body 100, the box body 100 is provided with a connecting plate 200; the connection plate 200 is provided with a mounting member 300 detachably coupled thereto, and the mounting member 300 forms a hanging point structure with the connection plate 200, the hanging point structure being used to fix the tank body 100 and an external structure.

It should be noted that, in the battery pack box provided in this embodiment of the present application, the connecting plate 200 is matched with the mounting part 300 to form a hanging point structure provided in the box body 100, the box body 100 can be fixed to an external structure through the hanging point structure, and meanwhile, the mounting part 300 is detachably connected to the connecting plate 200, and the structure can be flexibly connected between the box body 100 and the external structure, and the battery pack box provided in this embodiment of the present application can be matched with different external structures, so as to widen the application range of the battery pack box provided in this embodiment of the present application, and improve the adaptability of the battery pack box to the electric vehicle.

It should be understood that the "external structure" refers to other structures inside the electric vehicle for fixing with the battery pack, and may refer to a lifting lug inside the vehicle, and may also refer to other fixing parts inside the vehicle. Specifically, in the battery pack case provided by the embodiment of the present application, the connection plate 200 can be well matched with the installation of the entire vehicle, after the connection plate 200 is connected to the case body 100, the connection plate 200 and the case body 100 form an integral structure, and the installation component 300 can connect the connection plate 200 to the lifting lug 400 shown in fig. 2 or a fixing component in the vehicle, so that the battery pack case provided by the embodiment of the present application can be adapted to different lifting lugs 400 or battery vehicle types, and the application scenarios of the battery pack case provided by the embodiment of the present application can be widened.

It should be noted that the box body 100 is provided with a mounting portion, and the connecting plate 200 is fixed to the mounting portion to be connected with the box body 100. It should be understood that the "mounting portion" refers to a portion of the box body 100 for mounting the connection plate 200, and the mounting portion may be a structure protruding from the box body 100 or may be a partial region of the box body 100. Illustratively, as shown in fig. 1, the tank body 100 includes an annular frame 110 and a partition beam 120 disposed inside the annular frame 110, and a connecting plate 200 is mounted outside the annular frame 110 for facilitating hoisting or assembling with other structures after connecting the lifting lug 400. Of course, the tank body 100 is not limited to the installation of the connection plate 200 outside the annular frame 110 as shown in fig. 1, and may be specifically configured as required, and will not be described herein again.

With continued reference to the structure shown in fig. 1, the connecting plate 200 and the tank body 100 are formed separately, and both can be separately prepared according to their own requirements. When the connecting plate 200 is installed on the tank body 100, the connecting plate and the tank body 100 may be connected in various forms, for example, by using a connection manner such as bonding, welding, etc., so as to ensure the sealing performance of the tank body 100. Of course, the connection plate 200 and the box body 100 may be connected by riveting or the like according to the requirement.

With continued reference to the structure shown in fig. 1, in one embodiment, the connecting plate 200 and the mounting portion are made of the same material, and the connecting plate 200 and the mounting portion are connected by welding.

It should be noted that, when the connecting plate 200 and the mounting portion are made of the same material, the connecting plate 200 and the mounting portion have the same melting point, which facilitates the subsequent welding operation. Meanwhile, the connection strength of the connection part of the connection plate 200 and the installation part can be improved by the welding connection mode, so that the stability of the battery pack box body provided by the embodiment of the application in the use process can be improved.

In another embodiment, the tank body 100 and the connection plate 200 may be made of the same material. Illustratively, the materials used to make the tank body 100 and the connecting plate 200 may be aluminum. It should be noted that, when the entire box body 100 and the connecting plate 200 are prepared, the preparation process can be simplified. Illustratively, the tank body 100 may be a hollow aluminum profile to enhance the expansion resistance of the tank body 100.

When the mounting member 300 on the connecting plate 200 is specifically arranged, the mounting member 300 has a plurality of possibilities, specifically at least one of the following structures, and the following description is made by taking the external structure as the lifting lug 400 shown in fig. 2 as an example.

In one embodiment, the mount 300 is a bolt assembly. In other words, the connection plate 200 is detachably connected to the lifting lug 400 by a bolt assembly. It is noted that the removable connection achieved with the bolt assembly does not destroy the mounting member 300, i.e. the bolt assembly can be reused in multiple installations.

It should be noted that, the detachable connection structure can facilitate the detachment and installation between the connection plate 200 and the lifting lug 400, so as to widen an application scenario of the battery pack case provided in the embodiment of the present application. Specifically, on the one hand, the structure may enable the integral formation of the tank body 100 and the connecting plate 200 to be adapted to various different types of structures, for example, the lifting lug 400 or a fixed structure in an electric vehicle; on the other hand, the structure can enable the whole body formed by the box body 100 and the connecting plate 200 to be adapted to structures with various specifications, and for example, when the external structure is selected as the lifting lug 400, the lifting lug 400 with different models or different structures can be replaced according to requirements.

Illustratively, as shown in fig. 1 and 2, the bolt assembly includes a bolt 310 and a nut 320, and the connecting plate 200 is connected to the lifting lug 400 by the bolt 310 and the nut 320.

It should be noted that, instead of using a bolt assembly as the mounting member 300, the detachable connection between the connection plate 200 and the lifting lug 400 may be achieved by providing a different mounting member 300.

In another embodiment, the mounting member 300 is a bolt 310. Specifically, the bolt 310 is used to detachably connect the connecting plate 200 and the lifting lug 400.

In one embodiment, a receiving portion 210 is disposed between the connection plate 200 and the tank body 100, and the receiving portion 210 is used for receiving at least a portion of the mounting member 300 to prevent the mounting member 300 from interfering with the tank body 100.

It should be noted that the accommodating portion 210 may be formed by the box body 100 alone, or may be formed by the box body 100 and the connecting plate 200 in cooperation. Of course, it may also be formed by the connection plate 200 only.

In one embodiment, a side of the connection plate 200 facing the tank body 100 is provided with a groove forming the receiving portion 210. It is noted that the groove may be formed by punching, cutting, and bending the connection plate 200. Illustratively, as shown in fig. 3, the receiving portion 210 is formed by bending the connecting plate 200 to form a space between the connecting plate 200 and the tank body 100.

In one embodiment, when the mounting member 300 is formed of a bolt assembly, as shown in fig. 3 in conjunction with fig. 2, the head of the screw may be disposed in the accommodating portion 210, and the shaft of the bolt 310 may be inserted from the accommodating portion 210 to the other side of the connection plate 200 so as to be connected to the nut 320. At this time, the receiving portion 210 for receiving the head of the bolt 310 is shown in fig. 3.

It is noted that, in the structure shown in fig. 2 and 3, the connection plate 200 and the lifting lug 400 are connected by four sets of bolt assemblies, and each receiving portion 210 is used to receive two sets of bolt assemblies. It should be noted that, the stability of the connection relationship between the connecting plate 200 and the lifting lug 400 can be enhanced by fixing the connecting plate and the lifting lug with multiple sets of bolt assemblies.

It should be understood that the number and the arrangement position of the accommodating portions 210 are related to the number of the mounting members 300, and may be specifically set according to requirements, which are not described in detail herein.

Of course, the fitting relationship of the bolt assembly with the receiving portion 210 is not limited thereto, and the nut 320 may be disposed in the receiving portion 210, and the screw rod may be extended into the receiving portion 210 through the connection plate 200 to be connected with the nut 320 located in the receiving portion 210. At this time, the accommodating portion 210 as shown in fig. 3 is used for accommodating the nut 320, and at the same time, the accommodating portion 210 can prevent the screw from interfering with the box body 100 when the screw protrudes into the accommodating portion 210 too much.

It should be noted that, when the connecting assembly is configured in different structures, the structure of the accommodating portion for accommodating the connecting assembly may be changed, and the description thereof is omitted.

In one embodiment, the thickness of the connection plate 200 is 2mm to 10 mm. It should be noted that, when the thickness of the connecting plate 200 is 2mm ~ 10mm, the strength of the connecting plate 200 can be ensured, and then the stability after the box body 100 is connected with the external structure is improved, and then the stability after the box body 100 is connected with the lifting lug 400 is improved, and meanwhile, the connecting plate 200 and the box body 100 are conveniently welded. The connecting plate 200 is too thick, so that the tank body 100 and the connecting plate 200 are difficult to weld and the risk of insufficient welding is easy to occur; the connecting plate 200 is too thin, and it is difficult to maintain the connection strength between the connecting plate 200 and the tank body 100, so that the lifting lug 400 easily falls off from the tank body 100.

In one embodiment, when the connection plate 200 is welded to the tank body 100, the connection plate 200 may be welded to both sides of the tank body 100 to fix the welding locations 230, and the connection plate 200 may be welded to an area between the two receiving portions 210, so as to increase a welding area between the connection plate 200 and the tank body 100, thereby improving stability of a connection relationship between the connection plate 200 and the tank body 100.

In one embodiment, a portion of the connection plate 200 between the two receiving parts 210 is provided with a through hole 220.

It should be noted that the through hole 220 may be used to perform auxiliary welding between the connection plate 200 and the tank body 100, so as to further increase the welding area between the connection plate 200 and the tank body 100 and improve the stability of connection between the connection plate 200 and the tank body 100.

Illustratively, the welding manner is butt welding.

In addition, by providing the through-holes 220 in the connection plate 200, the weight of the connection plate 200 can be reduced, thereby contributing to the reduction in the overall weight of the battery pack.

In a second aspect, embodiments of the present application provide a battery pack. The battery pack comprises the battery pack box body provided in any technical scheme.

It should be noted that, in the battery pack provided in the embodiment of the present application, the connecting plate 200 is matched with the mounting member 300 to form a suspension point structure disposed on the box body 100, the box body 100 can be fixed to an external structure through the suspension point structure, meanwhile, the mounting member 300 is detachably connected to the connecting plate 200, the structure can be flexibly connected between the box body 100 and the external structure, and the battery pack provided in the embodiment of the present application can be matched with different external structures, so as to widen an application scenario of the battery pack provided in the embodiment of the present application, and improve adaptability of a battery pack box body and an electric vehicle.

In one embodiment, referring to the structures shown in fig. 2 and 4, the battery pack provided by the embodiment of the present application further includes a lifting lug 400, and the lifting lug 400 is fixed to the connection plate 200 by a mounting member 300.

In the battery pack provided in the embodiment of the present application, the lifting lug 400 is mounted to the pack body 100 through a lifting point structure formed by the connecting plate 200 and the mounting member 300, and both the lifting lug 400 and the battery pack case body can be separately manufactured according to respective design and use requirements, so that the manufacturing process can be simplified.

It is worth noting that the battery pack that this application embodiment passes through can be connected case body 100 with the fixed knot structure in the electric automobile through lug 400, can also be connected with the fixed knot structure in the electric automobile through the hoisting point structure of locating case body 100 directly, specifically can set up according to the demand, and no longer describe herein.

In one embodiment, in the battery pack case provided in the embodiment of the present application, the material of the lug 400 and the case body 100 may be different, so that the yield strength of the lug 400 is greater than that of the case body 100. When the structure of lug 400 and case body 100 is specifically set up, can satisfy the demand that lug 400 promoted structural strength to and, satisfy the light thinization of battery package box and leakproofness design demand.

Specifically, when the lifting lug 400 is connected by using the integral structure formed by the connecting plate 200, the mounting member 300 and the box body 100, the lifting lug 400 can be made into a standard piece to match different battery pack shapes because the lifting lug 400 is fixed relative to the box body through the connecting plate 200. Specifically, the structural arrangement and material selection of the lifting lug 400 can be set according to the lifting strength requirements.

In one embodiment, the tab 400 is a tab 400 formed of sheet metal.

The sheet metal is a preparation process including preparation modes such as shearing, punching/cutting/compounding, folding, riveting, splicing or forming and the like. The thickness of each part of the lifting lug 400 formed by the sheet metal process is consistent, and the structural strength of the lifting lug 400 can be improved.

In one embodiment, the lifting lug 400 is made of steel.

It should be noted that, when the manufacturing material of the lifting lug 400 is steel, the structural strength of the lifting lug 400 can be improved. Of course, the lifting lug 400 can be selected to be made of other materials according to requirements, and the details are not repeated herein.

When the lifting lug 400 is specifically provided, there are various possibilities of its structure.

In one embodiment, as shown in fig. 2 and 4, the lifting lug 400 includes a mounting plate 410 and a bending plate 420, the mounting plate 410 being connected to the connection plate 200; bending plate 420 is bent from the side of mounting plate 410 to the side facing away from connecting plate 200.

It should be noted that a certain angle is formed between the bending plate 420 and the mounting plate 410, so as to facilitate subsequent mounting and hoisting operations.

Illustratively, the bending plate 420 and the mounting plate 410 form an included angle of 90 ° on a side of the bending plate 420 facing away from the connecting plate 200, and of course, the angle setting between the bending plate 420 and the mounting plate 410 is not limited thereto, and may be specifically set according to the requirement.

In one embodiment, the mounting plate 410 has two fixing portions 412 disposed opposite to each other, and the mounting plate 410 is connected to the connection plate 200 by the two fixing portions 412.

It should be noted that, the arrangement form can improve the stability of the connection between the lifting lug 400 and the connecting plate 200, thereby ensuring that the connection relationship between the lifting lug 400 and the connecting plate 200 is not easy to fail in the installation and hoisting processes.

In one embodiment, the bending plate 420 is bent from a portion of the mounting plate 410 between the two fixing portions 412, and a buffer space S is provided between the portion of the mounting plate 410 between the two fixing portions 412 and the connecting plate 200, as shown in fig. 4. Note that, for convenience of description, a portion of the mounting plate 410 between the two fixing portions 412 is set as the intermediate portion 411.

It should be noted that, since the mounting plate 410 is provided with two fixing portions 412 disposed oppositely and the bending plate 420 is bent from the middle portion 411 of the mounting plate 410 between the two fixing portions 412, the mounting plate 410 is stressed intensively in the middle portion 411 between the two fixing portions 412, and is prone to fracture. When the buffer space S is formed in the middle portion 411 of the mounting plate 410, the stress concentration phenomenon in the region can be relieved, so that the service life of the lifting lug 400 is prolonged, and the lifting lug 400 is prevented from being broken from the region of the mounting plate 410 in the using process.

In one embodiment, the buffer space S is formed by stamping and/or bending the mounting plate 410.

It should be noted that the stamping and/or bending preparation process is simple, and the preparation efficiency of the lifting lug 400 can be improved.

In one embodiment, continuing to refer to the configuration shown in fig. 4, the lifting lug 400 includes a flange 430, and the flange 430 may be disposed in a variety of positions, specifically as follows:

in one embodiment, one side edge of mounting plate 410 extending from bending plate 420 is provided with a flange 430 to increase the strength between the connection location of mounting plate 410 and connection plate 200.

In another embodiment, the edge of the bent plate 420 is provided with a flange 430 to enhance the strength of the hanging position of the lifting lug 400.

In another embodiment, the mounting plate 410 is provided with a flange 430 extending from one edge of the bending plate 420, and the edge of the bending plate 420 is provided with the flange 430 to improve the bending resistance and the supporting strength of the lifting lug 400.

It should be understood that "flange 430" refers to the small folded edge structure formed by the edges of mounting plate 410 and bent plate 420, and that "flange 430" may be formed by a sheet metal process. For example, the bent plate 420 and the mounting plate 410 may have a flange 430 integrally formed at an edge thereof by a sheet metal process, so as to further improve the bending resistance and the supporting strength of the shackle 400.

It should be noted that, in the battery pack provided in the embodiment of the present application, the lifting lug 400 is mounted on the mounting portion of the box body 100 in the battery pack box body through the connecting plate 200, and both the lifting lug 400 and the battery pack box body can be separately manufactured according to respective design and use requirements, so that the manufacturing process can be simplified. Meanwhile, in the battery pack provided by the embodiment of the application, the lifting lug 400 is different from the box body 100 in material, so that the yield strength of the lifting lug 400 is greater than that of the box body 100, the requirement that the lifting lug 400 improves the structural strength can be met, and the requirements of light thinning and sealing design of the battery pack box body are met.

In one embodiment, the battery pack comprises a plurality of batteries and the battery pack case provided by the embodiment of the application, the battery pack case is used for fixing the plurality of batteries, and an end plate can be arranged between the batteries and the battery pack case.

It should be noted that, the battery pack includes a plurality of batteries, and a plurality of batteries are disposed in the box body. Wherein, a plurality of batteries can be installed in the case body 100 after forming a battery module, and at this time, the battery module can include an end plate and a side plate to which the plurality of batteries are fixed. Alternatively, a plurality of batteries may be directly disposed in the case body 100, i.e., without grouping the plurality of batteries, and at this time, an end plate may be disposed between the batteries and the battery pack case.

The battery includes a cell and an electrolyte, and a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The cell refers to a unit formed by winding or laminating a stack including a first electrode, a separator, and a second electrode. When the first electrode is a positive electrode, the second electrode is a negative electrode. Wherein the polarities of the first electrode and the second electrode can be interchanged.

In a third aspect, an embodiment of the present application provides an electric vehicle. The electric automobile comprises the battery pack provided in any technical scheme.

It should be noted that, in the electric vehicle provided in the embodiment of the present application, the connection plate 200 cooperates with the mounting part 300, a suspension point structure provided in the box body 100 is formed, the box body 100 can be fixed to the electric vehicle through the suspension point structure, and meanwhile, the mounting part 300 is detachably connected to the connection plate 200, and the structure can be used for flexibly connecting the battery pack to the electric vehicle, and the battery pack provided in the embodiment of the present application can be matched with different electric vehicles, so that the application range of the battery pack box is expanded, and the adaptability of the battery pack box to the electric vehicle is improved.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims. It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A battery pack case, comprising: the box body (100), the box body (100) is provided with a connecting plate (200); the connecting plate (200) is provided with a mounting piece (300) detachably connected with the connecting plate, and the mounting piece (300) and the connecting plate (200) form a lifting point structure which is used for fixing the box body (100) and an external structure.

2. The battery pack case according to claim 1, wherein the connection plate (200) is formed separately from the case body (100), and the connection plate (200) is welded to the case body (100).

3. The battery pack case according to claim 2,

the mounting member (300) is a bolt assembly including a bolt (310) and a nut (320); alternatively, the first and second electrodes may be,

the mounting member (300) is a bolt.

4. The battery pack case according to any one of claims 1 to 3, wherein a receiving portion (210) is provided between the connection plate (200) and the case body (100), the receiving portion (210) receiving at least a part of the mounting member (300).

5. The battery pack case according to claim 4, wherein a side of the connection plate (200) facing the case body (100) is provided with a groove forming the receiving portion (210).

6. The battery pack case according to any one of claims 1 to 3, wherein the thickness of the connection plate (200) is 2mm to 10 mm.

7. The battery pack case according to claim 6, wherein the connection plate (200) is provided with a through hole (220), and the connection plate (200) is additionally welded to the case body (100) through the through hole (220).

8. A battery pack comprising the battery pack case according to any one of claims 1 to 7.

9. The battery pack of claim 8, further comprising a lifting lug (400), the lifting lug (400) being connected to a lifting point structure in the battery pack case for securing relative to a case body (100) in the battery pack case.

10. An electric vehicle characterized by comprising the battery pack according to claim 8 or 9.

Images