CN215989052U

CN215989052U - Battery pack box and battery pack

Info

Publication number: CN215989052U
Application number: CN202122557799.2U
Authority: CN
Inventors: 金朝阳; 蒋昕玮
Original assignee: CALB Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-03-08
Anticipated expiration: 2031-10-22

Abstract

The application relates to the technical field of batteries, in particular to a battery pack box and a battery pack, wherein the battery pack box comprises a bottom plate, a frame and a bottom guard plate; the bottom plate is connected with the frame through a fastener; the bottom guard plate is arranged on the bottom plate, the edge of the bottom guard plate is provided with a containing part corresponding to the position of the fastener, and the containing part contains the fastener so as to avoid the interference of the bottom guard plate and the fastener. Through above-mentioned structural design, the leakproofness between backplate and the bottom plate can be optimized to this application.

Description

Battery pack box and battery pack

Technical Field

The application relates to the technical field of batteries, in particular to a battery pack box body and a battery pack.

Background

The safety requirements of the battery pack are becoming increasingly strict, for example, a certain air-tight function is required between the bottom protection plate and the bottom plate. However, for the conventional battery pack case, the fastener for fixing the bottom plate is likely to interfere with the bottom plate, which affects the sealing performance between the bottom plate and the bottom plate.

SUMMERY OF THE UTILITY MODEL

It is a primary object of the present application to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a battery pack case with improved sealing between a bottom protection plate and a bottom plate.

In order to achieve the purpose, the following technical scheme is adopted in the application:

according to one aspect of the application, a battery pack case is provided, wherein the battery pack case comprises a bottom plate, a frame and a bottom guard plate; the bottom plate and the frame are connected through fasteners; the bottom guard plate is arranged on the bottom plate, a containing part is arranged at the edge of the bottom guard plate corresponding to the position of the fastener, and the containing part contains the fastener so as to avoid the interference of the bottom guard plate and the fastener.

According to the technical scheme, the battery pack box provided by the application has the advantages that:

the battery package box that this application provided through at end backplate edge corresponding to the position of fastener sets up the portion of holding, utilizes the portion of holding to hold the fastener to this avoids end backplate and fastener to produce the interference. Through above-mentioned structural design, the leakproofness between backplate and the bottom plate can be optimized to this application.

Another primary object of the present application is to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a battery pack having the above-mentioned battery pack case.

according to another aspect of the present application, there is provided a battery pack, wherein the battery pack includes the battery pack case set forth in the present application.

According to the technical scheme, the battery pack has the advantages and positive effects that:

the battery package that this application provided through the battery package box that adopts this application to provide, can optimize the security of battery package.

Drawings

Various objects, features and advantages of the present application will become more apparent from the following detailed description of preferred embodiments thereof, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the application and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:

FIG. 1 is a bottom view of a battery pack case according to an exemplary embodiment;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

fig. 3 is a partial sectional view of the battery pack case shown in fig. 1;

FIG. 4 is an enlarged, fragmentary schematic view of a battery pack case according to another exemplary embodiment;

fig. 5 is a partial sectional view of the battery pack case shown in fig. 4;

fig. 6 is a partially enlarged schematic view illustrating a battery pack case according to another exemplary embodiment.

The reference numerals are explained below:

100. a base plate;

200. a frame;

300. a bottom guard plate;

310. a convex hull;

311. a groove;

320. a notch;

330. a through hole;

340. a drain hole;

400. a fastener;

500. a connecting member;

600. and a gasket.

Detailed Description

Exemplary embodiments that embody features and advantages of the present application are described in detail below in the specification. It is to be understood that the present application is capable of various modifications in various embodiments without departing from the scope of the application, and that the description and drawings are to be taken as illustrative and not restrictive in character.

In the following description of various exemplary embodiments of the present application, reference is made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration various exemplary structures, systems, and steps in which aspects of the present application may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized, and structural and functional modifications may be made without departing from the scope of the present application. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the application, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples described in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures in order to fall within the scope of this application.

Referring to fig. 1, a bottom view of a battery pack case proposed in the present application is representatively illustrated. In the exemplary embodiment, the battery pack case proposed in the present application is explained by taking an FDS case as an example. Those skilled in the art will readily appreciate that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to apply the relevant designs of the present application to other types of battery pack cases, and such changes are within the scope of the principles of the battery pack case as set forth herein.

As shown in fig. 1, in the present embodiment, the battery pack case provided by the present invention includes a bottom plate 100, a frame 200, and a bottom cover 300. Referring to fig. 2 and 3 in combination, fig. 2 representatively illustrates an enlarged schematic view of portion a of fig. 1; fig. 3 representatively illustrates a partial sectional view of the battery pack case shown in fig. 1. The structure, connection mode and functional relationship of the main components of the battery pack case proposed in the present application will be described in detail below with reference to the above drawings.

As shown in fig. 1 to 3, in the present embodiment, the base plate 100 and the bezel 200 are coupled by a fastener 400. This end backplate 300 sets up in bottom plate 100, specifically, end backplate 300 can set up in the bottom of bottom plate 100 for play the effect of protection to bottom plate 100, avoid bottom plate 100 to receive the impact and influence the fastness and the security of battery package box. The edge of the floor panel 300 is provided with a receiving portion corresponding to the position of the fastener 400, the receiving portion receiving the fastener 400 to prevent the floor panel 300 from interfering with the fastener 400. It should be noted that the fastener 400 is only used for connecting the bottom plate 100 and the frame 200, and the fastener 400 is not connected to the bottom cover plate 300, and the bottom cover plate 300 is disposed on the bottom plate 100 by other structures or manners. Through the above structural design, the battery pack case provided by the present application can optimize the sealing property between the bottom protection plate 300 and the bottom plate 100.

Alternatively, as shown in fig. 1 to 3, in the present embodiment, the receiving portion may be a convex hull 310, and the convex hull 310 protrudes away from the fastener 400, so that a side of the convex hull 310 facing the fastener 400 forms a groove 311, and the groove 311 receives the fastener 400. Through the above structural design, the present application can utilize the convex hull 310 to enhance the structural strength of the edge of the apron bottom 300 while utilizing the concave slot 311 to accommodate the fastener 400 to avoid the interference between the apron bottom 300 and the fastener 400. In addition, this application can utilize convex closure 310 to provide protect function for fastener 400, avoids fastener 400 to collide with the damage, further optimizes the reliability of battery package box, increase of service life.

Further, as shown in fig. 1 to 3, based on the structural design of the convex hull 310 for the accommodating portion, in the present embodiment, one side of the convex hull 310 may be opened at the edge of the bottom protection plate 300, so that the groove 311 is communicated with the outside. Through above-mentioned structural design, this application can utilize the opening of recess 311 will probably get into the water discharge in recess 311, further optimizes the leakproofness of battery package box.

Further, based on the structural design that the receiving portion is the convex hull 310, in the present embodiment, the convex hull 310 may be formed by stamping the bottom guard plate 300. Therefore, the structural strength of the edge of the bottom guard plate 300 can be further improved, the manufacturing process of the bottom guard plate 300 can be simplified, and the production efficiency is improved. In some embodiments, the bottom protective plate 300 may also be provided with the convex hull 310 by other processes, such as casting, integral molding, welding, etc., but not limited thereto.

Further, based on the structural design that the receiving portion is the convex hull 310, in the present embodiment, the surface of the bottom protection plate 300 contacting the bottom plate 100 is defined as a sealing surface, and the distance between the top of the convex hull 310 and the sealing surface, i.e., the groove depth of the concave groove 311, may be approximately 2mm to 4mm, for example, 2mm, 2.5mm, 3mm, 4mm, and the like. Through above-mentioned structural design, this application can make ponding discharge from the opening of convex closure 310 fast completely, reduces the risk that backplate 300 intakes. In some embodiments, the distance between the top of the convex hull 310 and the sealing surface may also be less than 2mm, or may be greater than 4mm, such as 1.5mm, 5mm, etc., and may be adjusted according to the height of the portion of the fastening member 400 exposed to the base plate 100, which is not limited thereto.

It should be noted that, in various possible embodiments according to the design concept of the battery pack case proposed in the present application, the receiving portion of the bottom cover 300 may also adopt other structures.

For example, referring to fig. 4 and 5, fig. 4 representatively illustrates a partially enlarged schematic view of a battery pack case in another exemplary embodiment, with specific display angles and portions generally corresponding to portion a in fig. 1; fig. 5 representatively illustrates a partial sectional view of the battery pack case shown in fig. 4.

As shown in fig. 4 and 5, in some embodiments, the receiving portion may be a notch 320, the notch 320 penetrates the backplate 300 along the thickness direction of the backplate 300, and the notch 320 is opened at the edge of the backplate 300, and the notch 320 receives the fastener 400.

For another example, referring to fig. 6, fig. 6 representatively illustrates a partially enlarged schematic view of a battery pack case in another exemplary embodiment, wherein the specific display angles and positions thereof generally correspond to portion a in fig. 1.

As shown in fig. 6, in some embodiments, the receiving portion may be a through hole 330, the through hole 330 penetrating the backplate 300 in a thickness direction of the backplate 300, the through hole 330 receiving the fastener 400.

Alternatively, as shown in fig. 1 and 2, in the present embodiment, the edge of the bottom plate 300 is connected to the bottom plate 100 by a connector 500. On this basis, the receiving portion of the bottom guard plate 300 may be staggered with the connecting member 500, thereby saving the space required for arranging the connecting member 500 and the fastening member 400 and improving the space utilization. It should be noted that the specific arrangement of the receiving portion and the connecting member 500, which is called "staggered arrangement", can be flexibly adjusted according to the number and arrangement of the connecting members 500 and the number and arrangement of the fastening members 400. For example, to accommodate different designs of connectors 500 and fasteners 400, the receiving portions and the connectors 500 may be staggered one by one, i.e., one connector 500 is disposed between two adjacent receiving portions and one receiving portion is disposed between two adjacent connectors 500. Of course, the receiving portions and the connecting members 500 may be arranged in other staggered manners, that is, all other arrangements except "all receiving portions are arranged together and all the connecting members 500 are arranged together" may be understood as the staggered manner, taking the substantially straight direction of the connecting members 500 and the receiving portions along the edge of the bottom protection plate 300 as an example.

Alternatively, as shown in fig. 3, in the present embodiment, a gasket 600 may be disposed between the backplate 300 and the bottom plate 100. Specifically, the gasket 600 is located on the opposite inner side of the edge of the backplate 300, i.e., on the opposite inner side of the fastener 400 (i.e., the receiving portion). Accordingly, because the bottom guard plate 300 and the bottom are approximately in a single-side fixed constraint mode relative to the sealing gasket 600, the convex hull 310 can be used for enhancing the rigidity of the sealing surface of the bottom guard plate 300, the compression amount in the single-side compression process is improved, the uniform compression of the sealing gasket 600 is ensured, and the deformation tendency of the bottom guard plate 300 caused by the rebound of the sealing gasket 600 can be effectively resisted. In addition, the lowest position of the convex hull 310 can be used for ensuring that water blocked outside by the sealing gasket 600 can be discharged smoothly, and the accumulated water of the bottom protection plate 300 after the vehicle wades is avoided.

As shown in fig. 3, based on the structural design of the sealing gasket 600 disposed between the bottom protective plate 300 and the bottom plate 100, in the present embodiment, when the accommodating portion of the bottom protective plate 300 is the convex hull 310, the bottom protective plate 300 is substantially a two-layer step structure with respect to the sealing surface (for example, the portion where the edge of the bottom protective plate 300 is connected to the bottom plate 100 by the connecting member 500) where the bottom protective plate 300 contacts the bottom plate 100, wherein the step height of one layer of the step structure is mainly controlled by the sealing rigidity after the sealing gasket 600 is compressed, and wherein the step height of the other layer of the step structure is formed by the arrangement of the convex hull 310 and is mainly controlled by the distance between the top of the convex hull 310 and the sealing surface, for example, the step height may be substantially 2mm to 4 mm.

Based on the structural design of the sealing gasket 600 disposed between the bottom protection plate 300 and the bottom plate 100, as shown in fig. 4 and 5, in some embodiments, when the accommodating portion of the bottom protection plate 300 is the notch 320, the bottom protection plate 300 may be provided with a drainage hole 340, and the drainage hole 340 is located between the accommodating portion and the sealing gasket 600. Through above-mentioned structural design, this application can prevent that water from 320 departments of breach from getting into between backplate 300 and the bottom plate 100 at the bottom, prevents that water accumulation from having sealed the space of establishing that 600, backplate 300, bottom plate 100 enclose, and through-hole 330 can play the effect of drainage. In some embodiments, when the accommodating portion of the bottom protective plate 300 is other structures such as the convex hull 310 and the through hole 330, the bottom protective plate 300 may also be provided with the water drainage hole 340, which is not limited thereto.

Alternatively, in the present embodiment, the base plate 100 may include a heat exchange plate.

It should be noted herein that the battery pack case shown in the drawings and described in the present specification are only a few examples of the many types of battery pack cases that can employ the principles of the present application. It should be clearly understood that the principles of the present application are in no way limited to any of the details or any of the components of the battery pack case shown in the drawings or described in this specification.

In summary, in the battery pack case provided by the present application, the accommodating portion is disposed at the edge of the bottom protection plate 300 corresponding to the position of the fastening member 400, and the fastening member 400 is accommodated in the accommodating portion, so as to prevent the bottom protection plate 300 and the fastening member 400 from interfering with each other. Through the above structural design, the present application can optimize the sealability between the backplate 300 and the base plate 100.

Based on the above detailed description of several exemplary embodiments of the battery pack case proposed by the present application, an exemplary embodiment of the battery pack proposed by the present application will be described below.

In this embodiment, the battery pack proposed by the present application includes the battery pack case proposed by the present application and described in detail in the above embodiments.

It should be noted herein that the battery packs shown in the drawings and described in the present specification are only a few examples of the many types of battery packs that can employ the principles of the present application. It should be clearly understood that the principles of the present application are in no way limited to any of the details or any of the components of the battery pack shown in the drawings or described in this specification.

In conclusion, the battery pack provided by the application can optimize the safety of the battery pack by adopting the battery pack box body provided by the application.

Exemplary embodiments of a battery pack case and a battery pack proposed by the present application are described and/or illustrated in detail above. The embodiments of the present application are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or step of one embodiment can also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. described and/or illustrated herein, the articles "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and the description are used merely as labels, and are not numerical limitations of their objects.

While the present battery pack case and battery pack have been described in terms of various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.

Claims

1. A battery pack case, comprising:

the bottom plate is connected with the frame through a fastener; and

the bottom guard plate is arranged on the bottom plate, the edge of the bottom guard plate is provided with an accommodating part corresponding to the position of the fastener, and the accommodating part accommodates the fastener so as to avoid the interference of the bottom guard plate and the fastener.

2. The battery pack case of claim 1, wherein the receiving portion is a convex hull that protrudes away from the fastener such that a side of the convex hull facing the fastener forms a recess that receives the fastener.

3. The battery pack case according to claim 2, wherein the convex hull has one side opened to the edge of the bottom cover plate so that the groove communicates with the outside.

4. The battery pack case according to claim 2, wherein the convex hull is formed by punching the bottom cover plate.

5. The battery pack case according to claim 1, wherein the receiving portion is a notch; and/or the accommodating part is a through hole.

6. The battery pack box according to any one of claims 1 to 5, wherein the edge of the bottom plate is connected to the bottom plate by a connecting member, and the receiving portions are arranged in a staggered manner with respect to the connecting member.

7. The battery pack box according to any one of claims 1 to 5, wherein a gasket is provided between the bottom plate and the bottom plate.

8. The battery pack case of claim 7, wherein the bottom protective plate has a drainage hole, and the drainage hole is located between the accommodating portion and the sealing gasket.

9. The battery pack case according to any one of claims 1 to 5, wherein the bottom plate comprises a heat exchange plate.

10. A battery pack characterized in that the battery pack comprises the battery pack case according to any one of claims 1 to 9.