Cylindrical lithium battery cap

A lithium battery, cylindrical technology, applied in the field of cylindrical lithium battery caps, can solve problems such as affecting the quality of the cap, inability to turn over, performance differences, etc., and achieve the effects of ensuring stability and safety performance, simple structure, and convenient assembly.

Inactive Publication Date: 2016-04-06
TAIXING ZHENGXING ELECTRON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing lithium battery cap uses a sealed outer ring to wrap the upper cover, gasket and explosion-proof membrane, and welds the orifice plate under the explosion-proof membrane. For lithium battery resistance with higher resistance requirements, the upper cover, gasket and explosion-proof membrane The welding between them directly affects the resistance of the cap, the material and processing of the gasket increase the production cost and production process, the performance difference between the gasket and the upper cover and the explosion-proof membrane, and the accuracy of the installation process lead to uneven performance of the cap and affect the quality of the cap
In addition, when the lithium battery is used, due to external factors such as vibration and extrusion, the explosion-proof diaphragm of the cap is easily deformed by vibration and extrusion, making it difficult or impossible to turn over the explosion-proof, posing a safety hazard

Method used

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  • Cylindrical lithium battery cap

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Experimental program
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Effect test

Embodiment Construction

[0012] Further description will be made below in conjunction with drawings and embodiments.

[0013] figure 1 As shown: a cylindrical lithium battery cap includes a sealed outer ring 1, an upper cover 4, an explosion-proof diaphragm 6 and an orifice plate 10. The cross-section of the circumferential convex bending part of the structure is "S" shape, and the bottom surface of the explosion-proof diaphragm 6 in the circular convex structure is provided with a ring of pressure relief grooves 9, and the explosion-proof diaphragm 6 is surrounded by bending areas 7 Inward bending is welded to the upper cover annular area 5 on the four sides of the upper cover 4 through solder joints 8, and the upper edge of the sealed outer ring is bent inward to compress the bending area of ​​the explosion-proof diaphragm. The lower bottom of the sealed outer ring 1 is hollowed out and connected with a circle of coaxial inner and outer support platforms 3, 2. The "S"-shaped bend of the circular co...

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PUM

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Abstract

The invention relates to a cylindrical lithium battery cap. The cylindrical lithium battery cap is characterized by comprising an outer seal ring, an upper cover, an explosion-proof diaphragm and a pore plate, wherein a round bump structure protrudes downwards in a central region of the explosion-proof diaphragm; the section of the bent part of the circumferential bump of the round bump structure is in an S shape; a circle of annular pressure relief notch groove is formed in the bottom surface of the explosion-proof diaphragm in the round bump structure; and the S-shaped bent part of the round bump structure is supported on the seal ring or the pore plate.

Description

technical field [0001] The invention relates to a cap, in particular to a cylindrical lithium battery cap. Background technique [0002] The lithium-ion battery cap is a key component of the lithium-ion battery, which is directly related to the reliability, service life, capacity, production and use safety of the producer and consumer of the lithium-ion battery. The existing lithium battery cap uses a sealed outer ring to wrap the upper cover, gasket and explosion-proof membrane, and welds the orifice plate under the explosion-proof membrane. For lithium battery resistance with higher resistance requirements, the upper cover, gasket and explosion-proof membrane The welding between them directly affects the resistance of the cap. The material and processing of the gasket increase the production cost and production process. The performance difference between the gasket, the upper cover and the explosion-proof membrane, and the accuracy of the installation process lead to uneve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/04H01M2/12H01M10/0525H01M50/152H01M50/184H01M50/342
CPCH01M10/0525H01M50/152H01M50/3425Y02E60/10
Inventor 熊超詹新峰马海霞
Owner TAIXING ZHENGXING ELECTRON
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