CN202721206U

CN202721206U - Sealing ring for cover plate of lithium battery

Info

Publication number: CN202721206U
Application number: CN2012203985196U
Authority: CN
Inventors: 韦俊红; 杜家熙; 张文庆; 杨涛; 杨瑞
Original assignee: HENAN NENGCHI POWER CO Ltd
Current assignee: HENAN NENGCHI POWER CO Ltd
Priority date: 2012-08-13
Filing date: 2012-08-13
Publication date: 2013-02-06
Anticipated expiration: 2022-08-13

Abstract

The utility model discloses a sealing ring for a cover plate of a lithium battery. The sealing ring for the cover plate of the lithium battery comprises ring-shape grooves of an upper ring-shaped surface and ring-shaped grooves of a lower ring-shaped surface of the sealing ring. A sealing structure of the sealing ring is one of the three that ring-shaped protruding bodies with cross section of a triangle shape, an arc shape or a square shape are arranged on the upper surface, the lower surface or the upper surface and the lower surface of the sealing ring, ring-shaped protruding bodies with cross section of a triangle shape, an arc shape or a square shape are arranged on the upper surface, the lower surface or the upper surface and the lower surface of the ring-shaped grooves of the sealing ring, and ring-shaped protruding bodies with the cross section of a triangle shape, an arc shape or a square shape are arranged on the upper surface and the lower surface of the sealing ring and the upper surface and the lower surface of the ring-shaped grooves. The sealing ring for the cover plate of the lithium battery is used to seal the lithium battery.

Description

The lithium battery cover plate sealing ring

Technical field:

The utility model relates to a kind of lithium cell component, particularly a kind of lithium battery cover plate sealing ring.

Background technology:

Lithium battery cover plate is very large for the sealing property impact of lithium battery with the structure of sealing ring, is the strength member of lithium battery, and the sealing area of existing sealing ring and cover plate position large or sealing surface is unreasonable, causes sealing effectiveness undesirable.

Summary of the invention:

The utility model purpose provides a kind of lithium battery cover plate sealing ring of good seal performance.The technical scheme that realizes the utility model purpose is, the lithium battery cover plate sealing ring comprises it is characterized in that the up and down ring surface cannelure of sealing ring: the hermetically-sealed construction of described sealing ring is following a kind of:

(1) to be provided with cross sectional shape be triangle, arc or the square prominent body of annular for the upper surface of sealing ring, lower surface or upper and lower surface,

(2) to be provided with cross sectional shape be triangle, arc or the square prominent body of annular for the upper surface of sealing ring cannelure, lower surface or upper and lower surface,

(3) to be equipped with cross sectional shape be triangle, arc or the square prominent body that goes in ring for the upper surface of the upper surface of sealing ring, lower surface, cannelure and lower surface.

The utility model has the remarkable advantage of good seal performance compared with the prior art.

Description of drawings:

Fig. 1 is the utility model ring structure schematic diagram.

Embodiment:

The effect of sealing ring in lithium battery is to sealing between the cover plate in the lithium battery, pole and the collector, guarantee the reliability that seals, to having sealing ring and top board and the contacted upper surface 1 of lower platen and lower surface 4 now owing to the relatively poor defective of the large sealing property of contact area, the utility model is adopted following technical measures, namely upper surface 1 or the lower surface 4 at sealing ring arranges the prominent body 5 of annular, the cross sectional shape of this prominent body can be triangle, arc or square prominent body, and this structure can be to sealing between cover plate and top board or the lower platen; Another kind of hermetically-sealed construction be the upper surface of the cannelure 2 that matches at sealing ring and cover plate or lower surface cross sectional shape is set is triangle, arc or the square prominent body 3 of annular, also can be at the upper surface of groove and lower surface the above-mentioned annular body 5 of dashing forward to be set simultaneously; The third hermetically-sealed construction of the present utility model is on the upper and lower surface of the groove that matches on the upper and lower surface of sealing ring with cover plate the prominent body of annular to be set simultaneously.

The utility model sealing ring is owing to be provided with prominent body or be provided with prominent body at the upper or lower surface of seal groove at the upper surface of sealing ring or lower surface, the area of this prominent body is little, thereby easier distortion under the pressure when assembling, thereby the performance of sealing is better, more reliable.

Claims

1. lithium battery cover plate sealing ring comprises it is characterized in that the up and down ring surface cannelure of sealing ring: the hermetically-sealed construction of described sealing ring is following a kind of:

(1) to be provided with cross sectional shape be triangle, arc or the square prominent body of annular for the upper surface of sealing ring, lower surface or upper and lower surface;

(2) to be provided with cross sectional shape be triangle, arc or the square prominent body of annular for the upper surface of sealing ring cannelure, lower surface or upper and lower surface;