CN2870180Y

CN2870180Y - Lithium ion cell sealing cover of preventing polar-column rotation

Info

Publication number: CN2870180Y
Application number: CNU2005201239872U
Authority: CN
Inventors: 于从良; 张超; 杨海; 吴静; 刘强; 李佩武; 刘志坚; 王琴; 程福龙; 王伯良; 刘萍
Original assignee: CETC 18 Research Institute
Current assignee: CETC 18 Research Institute
Priority date: 2005-12-15
Filing date: 2005-12-15
Publication date: 2007-02-14
Anticipated expiration: 2015-12-15

Abstract

The utility model belongs to a lithium ion battery sealed cap to prevent pole rotation, comprises battery cover, sealing ring fixed on battery cover, insulating ring in sealing ring hole as well as pole fixed on battery cover via sealing ring, insulating ring, the utility model is characterized in that: said sealing ring fixed on battery cover is provided with polygonal hole, said pole is provided with table fitted with sealing ring polygonal hole, insulating ring is provided between sealing ring polygonal hole and table on the pole. Since self-lock outer case fitted with pole polygon is welded on battery cover via insulating mat, could prevent pole rotation effectively, so as to avoid pole loosening, reduce possibility of battery leak, ensure good sealing performance of battery, increase safety reliability of the battery, the utility model has small footprint, weight of battery structural member is low, is favorable to increase specific energy of the battery.

Description

Prevent the lithium ion battery seal cover that pole rotates

Technical field

The utility model belongs to lithium-ion battery electrode column sealing technical field, particularly relates to a kind of lithium ion battery seal cover that prevents that pole from rotating.

Background technology

Sealing between pole and the battery cover at present is one of crucial Sealing Technology of lithium ion battery, other is general in the glass capsulation lithium battery, the ceramic seal alkaline battery has certain limitation in the lithium ion battery sealing, mainly be to be Al because lithium ion battery pole adopts, the Cu material, and common glass one metal or a ceramic metallic seal all need high-sintering process, when glass or ceramic melting, metal A l, Cu melts, this technology is unsuitable for the lithium ion battery Seal Design, therefore lithium-ion battery adopts mostly to pole, sealing ring, battery cover carries out compression seal, but when battery combination, turn repeatedly and cause easily that pole is loosening to influence the cell sealing effect, serious meeting influences the storage life of battery.

Summary of the invention

The utility model provides a kind of existing good seal performance for solving problems of the prior art, can effectively prevent the rotation lithium ion battery seal cover of pole again.

The utility model for solving the technical scheme that technical problem adopted that exists in the known technology is: prevent the lithium ion battery seal cover that pole rotates, comprise battery cover, be fixed on sealing ring on the battery cover, the dead ring in the sealing ring hole and be fixed on pole on the battery cover by sealing ring, dead ring, be characterized in: the described sealing ring that is fixed on the battery cover is provided with the polygon endoporus, described pole is provided with the platform that cooperates with sealing ring polygon endoporus, is provided with insulated ring between the platform on sealing ring polygon endoporus and the pole.

The utility model can also adopt following technical measures to realize: described sealing ring and the described battery cover that has the polygon endoporus is welded as a whole; Described dead ring and described sealing ring mold pressing or be molded as one; The polygon endoporus is a quadrilateral hole on the described sealing ring; The polygon endoporus is a hexagonal hole on the described sealing ring.

Advantage and the good effect that the utlity model has are: owing to be welded with the self-locking overcoat that cooperates with the pole polygon by insulation cushion on battery cover, can prevent effectively that pole from rotating, thereby avoid the loosening of pole, reduced the possibility of battery leakage, sealing to battery has good performance, has improved the security reliability of battery, and it is little to take up room, battery structure spare weight is little, helps improving the specific energy of battery.

Description of drawings

Fig. 1 prevents the lithium ion battery seal cover structural representation that pole rotates for the utility model is a kind of;

Fig. 2 is a pole structural representation among Fig. 1;

Fig. 3 is an insulated ring structural representation under the self-locking among Fig. 1.

Label among the figure is respectively: 1. pole; 2. dead ring; 3. battery cover; 4. go up sealing ring; 5. fastening bolt; 6. nut; 7. go up insulating washer; 8. insulated ring under the self-locking; 9. lug connecting hole; 10. lower seal; 12. sealing column; 13. polygon self-locking platform.

Embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, enumerate following examples now, and conjunction with figs. is described in detail as follows:

Embodiment 1: with reference to accompanying drawing 1-Fig. 3, at first go out the pole 1 that is made of fastening bolt 5, sealing column 12, polygon self-locking platform 13 and lug connecting hole 9 shown in Figure 2 with metal material processing; Integrally welded with the lower seal that has the polygon endoporus 10 that metal material is made with lithium-ion battery 3, the dead ring 2 that lower seal 10 inwall mold pressings or molding have non-metal insulating material to make is installed insulated ring 8 under the self-locking as shown in Figure 3 below the dead ring 2 of lower seal 10 inwalls; Pole 1 passes dead ring 2 holes, and the polygon self-locking platform 13 on the pole 1 cooperates with insulated ring 8 under 1 self-locking; Be with successively on the pole 1 sealing ring 4, on insulating washer 7, the fastening bolt 5 of pole 1 is provided with nut 6, behind the clamp nut 6, pole 1 is fixed on the battery cover 3 that is welded with lower seal 10 by self-locking, makes the lithium ion battery seal cover that pole rotates that prevents as shown in Figure 1.

Claims

1. prevent the lithium ion battery seal cover that pole rotates, comprise battery cover, be fixed on sealing ring on the battery cover, the dead ring in the sealing ring hole and be fixed on pole on the battery cover by sealing ring, dead ring, it is characterized in that: the described sealing ring that is fixed on the battery cover is provided with the polygon endoporus, described pole is provided with the platform that cooperates with sealing ring polygon endoporus, is provided with insulated ring between the platform on sealing ring polygon endoporus and the pole.

2. the lithium ion battery seal cover that prevents that pole from rotating according to claim 1, it is characterized in that: described sealing ring and the described battery cover that has the polygon endoporus is welded as a whole.

3. the lithium ion battery seal cover that prevents that pole from rotating according to claim 1 is characterized in that: described dead ring and described sealing ring mold pressing or be molded as one.

4. the lithium ion battery seal cover that prevents that pole from rotating according to claim 1, it is characterized in that: the polygon endoporus is a quadrilateral hole on the described sealing ring.

5. the lithium ion battery seal cover that prevents that pole from rotating according to claim 1, it is characterized in that: the polygon endoporus is a hexagonal hole on the described sealing ring.