Cylindrical lithium-ion battery cap against improper-open and leakage

A lithium-ion battery, cylindrical technology, applied in the direction of battery pack parts, circuits, electrical components, etc., can solve the problems of users not being able to use normally, abnormal opening and leakage, battery scrapping, etc., to solve potential failure and scrapping Hidden dangers, avoiding abnormal actions, and low modification costs

Active Publication Date: 2009-04-29
力神电池(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structural design of the safety protection valve not only protects the safe use of the battery, but also causes misoperation due to external forces during battery assembly and use, abnormal opening and liquid leakage, etc., resulting in the scrapping of the battery and the entire battery PACK, resulting in the failure of the user Normal use

Method used

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  • Cylindrical lithium-ion battery cap against improper-open and leakage

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Embodiment Construction

[0011] Below in conjunction with the accompanying drawings and preferred embodiments, the specific implementation, structure and features provided by the present invention are described in detail as follows:

[0012] Such as figure 1 As shown, a cylindrical lithium-ion battery cover that prevents abnormal opening and liquid leakage includes a top cover 1, a safety protection valve orifice plate 4, and a sealing ring 2 provided on the outside of the ring top cover 1. It is characterized in that the corresponding top On the lower part of the cover 1, a concentric circular plastic ring 3 for positioning the safety protection valve orifice 4 is arranged along the inner side of the sealing ring 2; a gap is provided between the circular plastic ring 3 and the sealing ring 2, and through The provided plastic ribs 6 are connected as one; the safety protection valve orifice plate 4 is fixedly connected with the safety film 5 provided on it, that is, two laser welding spots are connecte...

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PUM

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Abstract

The invention is concerned with cylindrical Li-ion battery cover protecting abnormal unsealing and leakage, relating to top cover, CID pore plate and sealing ring outside of top cover. There is a concentric plastic ring inside of the sealing ring under the top cover to locate CID pore plate. There is clearance between the sealing ring and sealing ring and they combine into a whole with plastic muscle. The CID pore plant fixes and connects with the corresponding safety film, and the top cover and conductor are wrapped into a whole by turning the side of safety film. This sealing ring module adopts the unique design with connecting parts of double rings, and the design of turning safety film to cover top cover and conductor. It reduces the extrusion of sealing ring causing from the seal of battery and eliminates the impact and destroy to laser welding structure of CID pore plate for the distortion of battery cover and sealing ring. This structure is simple and reasonable to prevent abnormal unsealing and leakage.

Description

technical field [0001] The invention relates to the structural design of the battery cover of a cylindrical lithium-ion battery, in particular to a cylindrical lithium-ion battery cover that prevents abnormal opening and liquid leakage. Background technique [0002] At present, due to the higher and higher capacity of cylindrical lithium-ion batteries, the application range is constantly expanding. From the point of view of safety, the battery itself must be provided with a safety mechanism, and the safety protection valve (also known as CID) in the battery cover is one of the safety mechanisms commonly used by various battery manufacturers. The structural design of the safety protection valve not only protects the safe use of the battery, but also causes misoperation due to external forces during battery assembly and use, abnormal opening and liquid leakage, etc., resulting in the scrapping of the battery and the entire battery PACK, resulting in the failure of the user No...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/04H01M50/152H01M50/184H01M50/186
CPCY02E60/12Y02E60/10
Inventor 衣思平苏斌王宝忠
Owner 力神电池(苏州)有限公司
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