CN216354450U

CN216354450U - Lithium ion battery shell and lithium ion battery with same

Info

Publication number: CN216354450U
Application number: CN202123040071.9U
Authority: CN
Inventors: 高程; 张宏立
Original assignee: Hefei Guoxuan High Tech Power Energy Co Ltd
Current assignee: Hefei Gotion High Tech Power Energy Co Ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-04-19
Anticipated expiration: 2031-12-02

Abstract

The utility model provides a lithium ion battery shell, which comprises a main body and a groove, wherein the main body is provided with a plurality of grooves; the main body is of a top opening structure; a groove is transversely arranged above the inner wall of the main body. According to the utility model, the groove is formed in the inner wall of the lithium ion battery shell in a circle, when the lithium ion battery needs to be disassembled and observed, the line is drawn along the groove by using the art designing knife to damage the main body, the cover plate and the upper side of the main body are slowly removed along the line drawing position, the shell can be conveniently opened from the groove, the real state of the inside of the lithium ion battery can be observed, and the danger during disassembly can be reduced.

Description

Lithium ion battery shell and lithium ion battery with same

Technical Field

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

Background

The lithium ion battery has the advantages of high energy density, long cycle life and the like, and is widely applied to the fields of portable electronic products, electric automobiles and the like; in the production process of the lithium ion battery, the battery needs to be disassembled and analyzed, and the state of the pole piece soaked by the electrolyte is observed; for a failed battery, the battery needs to be disassembled and analyzed, and changes of active substances in the pole core are observed.

When the disassembly is carried out, the lithium ion battery shell needs to be opened firstly, and then the next disassembly can be carried out, because the shell wall is thick, the pole core can be damaged by too much force during the disassembly to cause short circuit, on one hand, the real state of the interior can not be observed, and on the other hand, certain danger is brought to disassembly personnel.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lithium ion battery shell which is convenient to disassemble and analyze.

The utility model solves the technical problems through the following technical means:

a lithium ion battery case comprising a main body (101) and a groove (102); the main body (101) is of an open-top structure; a groove (102) is transversely formed above the inner wall of the main body (101).

When the lithium ion battery needs to be disassembled and observed, the line is scribed along the groove by using the utility knife to damage the main body, and the cover plate and the upper side of the main body are slowly removed along the line, so that the shell can be conveniently opened from the groove; the inner wall of the lithium ion battery shell is provided with the groove structure, so that the thickness of the lithium ion battery shell at the position can be thinned, the lithium ion battery shell is easy to open from the outside, and the internal pole core is prevented from being damaged and causing short circuit due to excessive force when the lithium ion battery shell is disassembled; not only can the real state inside the lithium ion battery be observed, but also the danger during disassembly can be reduced.

Further, the main body (101) is of a square structure with an open top.

Furthermore, the outer wall of the main body (101) is of a plane structure, and grooves (102) are transversely formed in the upper portions of four inner walls of the main body (101).

Further, the grooves (102) are located at the same height and encircle the inner wall of the main body (101).

Furthermore, the thickness of the main body (101) is 0.5-1.0 mm.

Furthermore, the thickness ratio of the groove (102) to the main body (101) is 0.4-0.8, and the height of the groove (102) is 0.5-5 mm.

Furthermore, the material of the main body (101) is aluminum alloy.

Furthermore, the distance between the groove (102) and the top opening of the main body (101) is 0.5-1.0 cm.

Further, the vertical cross-sectional shape of the groove (102) is arc-shaped from bottom to top.

The utility model also discloses a lithium ion battery comprising the shell in any technical scheme, which comprises a shell (1), a cover plate, a pole core and electrolyte; the cover plate is positioned above the shell (1); the pole core and the electrolyte are located inside the housing (1).

Has the advantages that: according to the utility model, the groove structure is arranged on the inner wall of the lithium ion battery shell in a circle, so that the thickness of the lithium ion battery shell at the position can be thinned, the lithium ion battery shell is easy to open from the outside, and the phenomenon that the internal pole core is damaged and a short circuit is caused due to excessive force when the lithium ion battery shell is disassembled is prevented; the pole core can be safely taken out, the safety of disassembling personnel can be guaranteed, and the battery pole core taking device has the advantages of being simple in operation, wide in applicability and the like, and has no influence on normal use of the battery.

The utility model has the advantages that:

the inner wall of the lithium ion battery shell is provided with a circle of groove, when the lithium ion battery needs to be disassembled and observed, the line is drawn along the groove by using the art designing knife to damage the main body, and the cover plate and the upper side of the main body are slowly removed along the line, so that the shell can be conveniently opened from the groove; the inner wall of the lithium ion battery shell is provided with the groove structure, so that the thickness of the lithium ion battery shell at the position can be thinned, the lithium ion battery shell is easy to open from the outside, and the internal pole core is prevented from being damaged and causing short circuit due to excessive force when the lithium ion battery shell is disassembled; not only can the real state inside the lithium ion battery be observed, but also the danger during disassembly can be reduced.

According to the utility model, the groove structure is arranged on the inner wall of the lithium ion battery shell in a circle, so that the thickness of the lithium ion battery shell at the position can be thinned, the lithium ion battery shell is easy to open from the outside, and the phenomenon that the internal pole core is damaged and a short circuit is caused due to excessive force when the lithium ion battery shell is disassembled is prevented; the pole core can be safely taken out, the safety of disassembling personnel can be guaranteed, and the battery pole core taking device has the advantages of being simple in operation, wide in applicability and the like, and has no influence on normal use of the battery.

Drawings

Fig. 1 is a schematic view of a case in a lithium ion battery according to embodiment 1 of the present invention;

fig. 2 is a cross-sectional, partially enlarged view of one side of the housing of fig. 1.

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 embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. 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.

Example one

As shown in fig. 1, the present embodiment provides a lithium ion battery, which includes a case 1, a cover plate, a pole core, and an electrolyte.

The cover plate is positioned above the shell 1; the pole core and the electrolyte are positioned inside the shell 1; the pole core comprises a positive pole piece, a negative pole piece and a diaphragm positioned between the positive pole piece and the negative pole piece, wherein the positive pole piece and the negative pole piece are conventional in the field; the electrolyte is a non-aqueous electrolyte conventional in the art.

As shown in fig. 1 and 2, the housing 1 includes a main body 101 and a groove 102; the main body 101 is of a top opening structure, and the main body 101 is of a square structure with an opening at the top in the embodiment; the outer wall of the main body 101 is of a plane structure, grooves 102 are transversely formed in the upper portions of the four inner walls of the main body 101, the grooves 102 are located at the same height and encircle the inner wall of the main body 101 by one circle; the thickness of the main body 101 is 0.5-1.0 mm, and the material is aluminum alloy; the distance between the groove 102 and the top opening of the main body 101 is 0.5-1.0 cm; the thickness ratio of the groove 102 to the main body 101 is 0.4-0.8, the height of the groove 102 is 0.5-5 mm, and the vertical section of the groove 102 is arc-shaped from bottom to top; this embodiment is exemplified by the thickness of the body 101 being 0.6 mm; the distance between the groove 102 and the top opening of the main body 101 is 0.6 cm; the thickness of the groove 102 is 0.4 mm.

When the lithium ion battery needs to be disassembled and observed, the line is drawn along the part A corresponding to the external groove 102 of the main body 101 by using an art designing knife to damage the main body 101, the cover plate and the upper side of the main body 101 are slowly removed along the line drawing part, and the shell can be conveniently opened from the groove 102, so that the pole core is safely taken out, and the pole core is prevented from being damaged and dangerous.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A lithium ion battery case, comprising a main body (101) and a groove (102);

the main body (101) is of an open-top structure;

grooves (102) are transversely formed in the upper portion of the inner wall of the main body (101).

2. The lithium ion battery case of claim 1, wherein: the main body (101) is of a square structure with an open top.

3. The lithium ion battery case of claim 2, wherein: the outer wall of main part (101) is planar structure, all transversely seted up recess (102) above four inner walls of main part (101).

4. The lithium ion battery case according to any one of claims 1 to 3, wherein: the grooves (102) are located at the same height and encircle the inner wall of the main body (101).

5. The lithium ion battery case of claim 4, wherein: the thickness of the main body (101) is 0.5-1.0 mm.

6. The lithium ion battery case of claim 5, wherein: the thickness ratio of the groove (102) to the main body (101) is 0.4-0.8, and the height of the groove (102) is 0.5-5 mm.

7. The lithium ion battery case of claim 4, wherein: the main body (101) is made of aluminum alloy.

8. The lithium ion battery case of claim 4, wherein: the distance between the groove (102) and the top opening of the main body (101) is 0.5-1.0 cm.

9. The lithium ion battery case of claim 4, wherein: the vertical cross section of the groove (102) is arc-shaped from bottom to top.

10. A lithium ion battery comprising the housing of any of claims 1-9, wherein: comprises a shell (1), a cover plate, a pole core and electrolyte; the cover plate is positioned above the shell (1); the pole core and the electrolyte are located inside the housing (1).