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Button cell

A button battery, single-layer technology, applied in secondary battery manufacturing, battery pack parts, battery box/coating, etc., can solve the problems of poor sealing performance, easy to bloat, etc., and achieve the effect of wide industrial value

Pending Publication Date: 2018-12-18
SHENZHEN LIYUAN BATTERY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a button battery to solve the technical problems of poor sealing performance and prone to inflation in the prior art

Method used

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Embodiment 1

[0031] see Figure 1 to Figure 4 As shown, the present embodiment provides a button battery, including a negative electrode cover 101, a positive electrode shell 102, a single-layer metal support ring 103 and a support retaining ring 112; the peripheral edge of the negative electrode cover 101 is provided with a sealing ring 104, and the positive electrode Case 102, negative electrode cover 101 and sealing plastic ring 104 cooperate to form a closed space, in which a winding pole group 105 and electrolyte are arranged; single-layer metal support ring 103 is located between the lower surface of sealing plastic ring 104 and the positive electrode case 102 between the upper surface of the shell bottom, and the inner ring wall of the single-layer metal support ring 103 and the outer surface of the winding pole group 105 are provided with a gap; the support retaining ring 112 is fixedly connected with the single-layer metal support ring 103, and the support retaining ring The outer...

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Abstract

The invention relates to the technical field of batteries, in particular to a button battery. A button battery comprising a negative electrode cover, a positive electrode housing, a single layer metalsupport ring and a support retainer ring; The circumferential edge of the negative electrode cover is provided with a sealed plastic insert ring and a positive electrode shell, the negative electrodecover and the sealed plastic insert ring cooperate to form a sealed space, and a winding electrode group and an electrolyte are arranged in the sealed space; The single-layer metal support ring is located between the lower surface of the sealing plastic-inlaid ring and the upper surface of the shell bottom of the positive electrode case, and the inner ring wall of the single-layer metal support ring and the outer surface of the winding pole group are arranged in a gap; The support retainer ring is fixedly connected with the single layer metal support ring, and the outer surface of the supportretainer ring is in contact with the inner surface of the sealing plastic insert ring. The invention can enhance the sealing performance, effectively alleviate the air expansion phenomenon, and improve the charging and discharging performance and the service life.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a button battery. Background technique [0002] Button batteries have the characteristics of small size, high battery voltage, stable discharge voltage, wide operating temperature range, and long storage life. They are widely used in calculators, electronic watches, remote controls, electronic toys, and smart wearable devices. At present, the existing button battery includes a negative electrode cover, a positive electrode case, and a wound electrode group composed of a negative electrode sheet, a separator and a positive electrode sheet. A sealing plastic ring is inlaid on the outer periphery of the negative electrode case. The plastic ring is in contact with the bottom of the positive electrode casing to play a sealing role. The sealed space formed by the cooperation of the positive electrode casing and the negative electrode cover is filled with electrolyte, and the wound el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/04H01M2/08H01M10/04H01M50/153H01M50/188
CPCH01M10/0431H01M50/166H01M50/171H01M50/153H01M50/183Y02E60/10Y02P70/50
Inventor 马传光画帅
Owner SHENZHEN LIYUAN BATTERY TECH CO LTD
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