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Rotation-preventive assembly applied to lithium-ion battery

A lithium-ion battery and combination device technology, applied in battery pack components, circuits, electrical components, etc., can solve problems such as affecting the normal use of the battery, loosening of the cap and casing, and small resistance to external torque, and improve the level of protection and safety performance. , The structure is simple, the effect of ensuring the safety of use

Inactive Publication Date: 2009-11-11
TIANJIN SANHEYI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since both are of circular structure, the resistance to external force and torque between them is relatively small, so when installing and using, it requires standard operation and great care, resulting in high labor intensity and low work efficiency.
If the actual operation is a little careless, when the positive pole or the negative pole has an external force such as the installation nut, it often causes looseness between the cap and the shell, resulting in liquid leakage and other phenomena, affecting the normal use of the battery, causing safety hazards, and even causing major accidents

Method used

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  • Rotation-preventive assembly applied to lithium-ion battery
  • Rotation-preventive assembly applied to lithium-ion battery
  • Rotation-preventive assembly applied to lithium-ion battery

Examples

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Embodiment 1

[0031] An anti-rotation combination device for a lithium ion battery, comprising a cap installed at the end of a lithium ion battery case 1, the cap has a pole and a top cover. The positive pillar 3 is welded to the positive octagonal top cover 6, and the positive octagonal top cover 6 is equipped with an explosion-proof diaphragm 11, and the explosion-proof diaphragm 11 is welded with an orifice plate 12. A gasket 13 is installed between the diaphragm 11 and the orifice plate 12, and a sealing ring 14 is wrapped around it. The positive octagonal top cover 6, the explosion-proof diaphragm 11 and the outer edge of the sealing ring 14 are pressed with straight edges 2, forming an octagonal anti-rotation combination structure. . The negative pole pillar 4 is welded to the negative octagonal top cover 8, the negative octagonal top cover 8 is connected to the octagonal cavity 10 and the liner 9, and the sealing ring 7 is outsourced, the negative octagonal top cover 8, the octagonal...

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PUM

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Abstract

The invention relates to a rotation-preventive assembly applied to a lithium-ion battery and pertains to the technical field of lithium-ion battery. The rotation-preventive assembly applied to the lithium-ion battery comprises a cap installed on the end part of the shell of the lithium-ion battery and provided with a pole and a top cover which are welded with each other. The assembly is characterized in that the external edges of the top cover and the shell, which are installed and matched with each other, have a non-circular structure. The device improves the torque of positive electrode mast and negative electrode mast theoretically and fundamentally, prevents relative rotation of the battery shell and the cap, and has the advantages of simple structure, convenient installation, high production efficiency, safe use, high protective performance level and the like.

Description

technical field [0001] The invention belongs to the technical field of lithium ion batteries, in particular to an anti-rotation combination device for lithium ion batteries. Background technique [0002] At present, lithium-ion batteries have the characteristics of small size, light weight, strong power, no memory, and environmental protection, and are widely used in industrial production and daily life. However, due to the use of electrolyte in lithium-ion batteries, there are safety problems such as leakage. The two ends of the casing of the existing lithium-ion battery are provided with caps, and the cap has poles and a top cover, and the poles and the top cover are welded. The outer edge of the cap of the commonly used circular lithium-ion battery is a disc-shaped structure, which is sealed with the battery case by glue and extrusion. However, since both of them are of circular structure, the resistance to external force and torque between them is relatively small. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/10H01M2/04H01M2/02H01M50/107H01M50/152H01M50/166
CPCY02E60/12Y02E60/10
Inventor 牛广谦邰永宁
Owner TIANJIN SANHEYI ELECTRONICS
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