CN216085193U

CN216085193U - Battery shell

Info

Publication number: CN216085193U
Application number: CN202122090225.9U
Authority: CN
Inventors: 侯博闻; 张亚儒; 刘涛
Original assignee: Shanghai Lanjun New Energy Technology Co Ltd
Current assignee: Shanghai Lanjun New Energy Technology Co Ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-03-18
Anticipated expiration: 2031-08-31

Abstract

The embodiment of the utility model provides a battery shell, and relates to the technical field of batteries. The battery shell comprises a frame and a cover plate; the cover plate comprises a first surface and a second surface which are oppositely arranged along the thickness direction; be provided with a plurality of location portions on the first surface, location portion joint is in the edge of frame to fix a position the apron, can be convenient for reduce the welding degree of difficulty of apron and frame.

Description

Battery shell

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery shell.

Background

The welding of battery shell is as the key process in the battery preparation, when with apron and frame welding, because the location difficulty, the welding degree of difficulty is great, and the welding back apron is poor with frame cooperation uniformity, and size deviation is great, and production efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery shell which can facilitate the reduction of the welding difficulty of a cover plate and a frame.

Embodiments of the utility model may be implemented as follows:

an embodiment of the present invention provides a battery case, which includes a frame and a cover plate;

the cover plate comprises a first surface and a second surface which are oppositely arranged along the thickness direction;

the first surface is provided with a plurality of positioning portions, and the positioning portions are clamped at the corners of the frame to position the cover plate.

Optionally, the positioning portion is formed by punching on the cover plate.

Optionally, the first surface has an edge portion, and the edge portion is provided with a first positioning portion and a second positioning portion;

the frame comprises a first inner wall and a second inner wall, the first inner wall is adjacent to the second inner wall, the first positioning portion is abutted against the first inner wall, and the second positioning portion is abutted against the second inner wall.

Optionally, the first positioning portion and the second positioning portion are rectangular in cross-sectional shape parallel to the first surface.

Optionally, the first surface is a rectangular surface, the first positioning portion is close to a long side of the first surface, a long side of a rectangular cross section of the first positioning portion is parallel to the long side of the first surface, and a short side of the rectangular cross section of the first positioning portion is parallel to the short side of the first surface;

the second positioning part is close to the short side of the first surface, the long side of the rectangular section of the second positioning part is parallel to the short side of the first surface, and the short side of the rectangular section of the second positioning part is parallel to the long side of the first surface.

Optionally, the first surface is a rectangular surface and has four corner portions, the first positioning portion and the second positioning portion are respectively provided with four, and one first positioning portion and one second positioning portion are provided on one of the corner portions of the first surface.

Optionally, the positioning part has a rectangular shape.

Optionally, the edge of the positioning portion is provided with a fillet.

Optionally, the radius of the fillet is 0.1-0.3 mm.

Optionally, the number of the cover plates includes two, and the two cover plates are respectively disposed on two opposite sides of the frame.

The beneficial effects of the battery shell of the embodiment of the utility model include, for example: through set up a plurality of location portions on the first surface at the apron, fix a position location portion joint to the apron in the edge of frame for be difficult for taking place relative movement between apron and the frame, thereby reduced the welding degree of difficulty when welding apron and frame, promoted apron and frame complex uniformity, reduced the size deviation, promoted production efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is an exploded view of a battery case in an embodiment of the present application;

fig. 2 is an enlarged view of a portion a in fig. 1.

Icon: 10-a battery case; 100-frame; 110 — a first inner wall; 120-a second inner wall; 200-a cover plate; 210-a first surface; 220-a second surface; 230-corner portions; 240-a positioning section; 241-a first positioning part; 242-a second location section; 243-round corners.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the utility model is used, it is only for convenience of describing the present invention and simplifying the description, but it is not necessary to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, it should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

The welding of battery shell is as the key process in the battery preparation, when welding apron and frame, often can have the great problem of the welding degree of difficulty. In order to solve the technical problem, the present embodiment provides a battery case.

Referring to fig. 1-2, a battery case 10 according to the present embodiment includes a frame 100 and a cover plate 200, wherein the cover plate 200 includes a first surface 210 and a second surface 220 oppositely disposed along a thickness direction; the first surface 210 is provided with a plurality of positioning portions 240, and the positioning portions 240 are clamped at corners of the frame 100 to position the cover plate 200.

Through set up a plurality of location portions 240 on the first surface 210 at apron 200, fix a position apron 200 with location portion 240 joint in the edge of frame 100 for be difficult for taking place relative movement between apron 200 and the frame 100, thereby reduced the welding degree of difficulty when welding apron 200 and frame 100, promoted apron 200 and frame 100 complex uniformity, reduced the size deviation, promoted production efficiency.

Alternatively, the positioning part 240 is stamped on the cover plate 200. The cover plate 200 is punched in the thickness direction of the cover plate 200, and a protruding positioning portion 240 is formed on the first surface 210, and a groove corresponding to the positioning portion 240 is formed on the second surface 220. In other embodiments, the positioning portion 240 may also be a positioning block directly protruding on the first surface 210, as long as it can be clamped at a corner of the frame 100 to position the cover plate 200.

Further, the first surface 210 has a plurality of corner portions 230, the corner portions 230 are provided with the positioning portions 240, and the positioning portions 240 include a first positioning portion 241 and a second positioning portion 242; the frame 100 includes two first inner walls 110 and two second inner walls 120, two first inner walls 110 are disposed oppositely, two second inner walls 120 are disposed oppositely, the first inner walls 110 and the second inner walls 120 are adjacent, the first positioning portions 241 abut against the first inner walls 110, and the second positioning portions 242 abut against the second inner walls 120.

In the present embodiment, the first surface 210 is a rectangular surface and has four corners 230, four first positioning portions 241 and four second positioning portions 242 are respectively disposed, and one first positioning portion 241 and one second positioning portion 242 are disposed on one of the corners 230 of the first surface 210.

When the cover plate 200 and the bezel 100 are positioned, the first positioning portions 241 and the second positioning portions 242 of the four corner portions 230 are respectively abutted against the first inner wall 110 and the second inner wall 120, so that the cover plate 200 and the bezel 100 are not easily moved relative to each other, welding is easily performed, and the welding difficulty is reduced.

Optionally, the positioning portion 240 has a rectangular shape, and the positioning portion 240 has a length of 5mm, a width of 3mm, and a height of 1 mm. The first positioning portion 241 and the second positioning portion 242 are rectangular in a sectional shape parallel to the first surface 210. The first positioning portion 241 is close to the long side of the first surface 210, the long side of the rectangular cross section of the first positioning portion 241 is parallel to the long side of the first surface 210, and the short side of the rectangular cross section of the first positioning portion 241 is parallel to the short side of the first surface 210; the second positioning portion 242 is close to the short side of the first surface 210, the long side of the rectangular cross section of the second positioning portion 242 is parallel to the short side of the first surface 210, and the short side of the rectangular cross section of the second positioning portion 242 is parallel to the long side of the first surface 210.

In this embodiment, the distance between the long side of the rectangular cross section of the first positioning portion 241 and the long side of the first surface 210 is 0.6mm, and the distance between the short side of the rectangular cross section of the first positioning portion 241 and the short side of the first surface 210 is 5.3 mm; the distance between the long side of the rectangular cross section of second positioning portion 242 and the short side of first surface 210 is 0.6mm, and the distance between the short side of the rectangular cross section of second positioning portion 242 and the long side of first surface 210 is 5.3 mm.

In order to better clamp the positioning portion 240 on the frame 100, a fillet 243 is disposed at the edge of the positioning portion 240, and the radius of the fillet 243 is 0.1-0.3 mm; preferably, the radius of the rounded corners 243 is 0.2 mm.

In addition, in the present embodiment, the number of the cover plates 200 includes two, and the two cover plates 200 are respectively disposed on two opposite sides of the frame 100. The two cover plates 200 have substantially the same structure and are respectively fastened to the upper and lower sides of the frame 100.

According to the battery case 10 provided in the present embodiment, the operation principle of the battery case 10 is as follows: before welding the frame 100 and the cover plate 200, the first positioning portion 241 of the cover plate 200 abuts against the first inner wall 110 of the frame 100, and the second positioning portion 242 of the cover plate 200 abuts against the second inner wall 120 of the frame 100, and then, when welding is performed, relative movement between the frame 100 and the cover plate 200 is not easy to occur, so that the welding difficulty is reduced, and the welding efficiency is improved.

In summary, the embodiment of the utility model provides the battery case 10, the positioning portion 240 on the cover plate 200 is firstly clamped at the corner of the frame 100, so that the frame 100 and the cover plate 200 are not easy to move relatively, and then the frame 100 and the cover plate 200 are welded more easily, thereby reducing the welding difficulty and improving the welding efficiency.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A battery shell is characterized by comprising a frame and a cover plate;

2. The battery case according to claim 1, wherein the positioning portion is punched on the cover plate.

3. The battery case according to claim 1, wherein the first surface has a plurality of corner portions on which positioning portions are provided, the positioning portions including a first positioning portion and a second positioning portion;

4. The battery case according to claim 3, wherein the first positioning portion and the second positioning portion are rectangular in a sectional shape parallel to the first surface.

5. The battery case according to claim 4, wherein the first surface is a rectangular surface, the first positioning portion is adjacent to a long side of the first surface, a long side of a rectangular cross section of the first positioning portion is parallel to the long side of the first surface, and a short side of the rectangular cross section of the first positioning portion is parallel to the short side of the first surface;

6. The battery case according to claim 3, wherein the first surface is a rectangular surface having four corner portions, four first positioning portions and four second positioning portions are provided, respectively, and one first positioning portion and one second positioning portion are provided on one of the corner portions of the first surface.

7. The battery case according to claim 1, wherein the positioning portion has a rectangular shape.

8. The battery case according to claim 7, wherein edges of the positioning portions are provided with rounded corners.

9. The battery case of claim 8, wherein the radius of the rounded corners is 0.1-0.3 mm.

10. The battery shell according to claim 1, wherein the number of the cover plates comprises two, and the two cover plates are respectively disposed on two opposite sides of the frame.