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Button lithium battery with opening-type pole piece

A lithium battery and pole piece technology, which is applied in the field of button lithium batteries, can solve the problems of large space and occupancy, and achieve the effects of increasing storage space, best activity, improving performance and service life

Inactive Publication Date: 2017-11-24
东莞市金邦工艺有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this type of battery, in theory, the more electrolyte, the more guaranteed its performance and service life, but because the positive plate and other components have taken up a lot of space

Method used

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  • Button lithium battery with opening-type pole piece
  • Button lithium battery with opening-type pole piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] refer to figure 2 As shown, a button lithium battery with an open-hole pole piece includes a negative electrode cover 1, a positive electrode shell 2, an insulating sealing ring 3 is provided between the outer edge of the negative electrode cover 1 and the upper opening of the positive electrode shell 2, and the inside of the positive electrode shell 2 is from top to bottom. Lithium-ion negative plate 4, battery diaphragm 5, and positive plate are arranged in sequence below, and a steel ring is provided between the positive plate and the positive shell 2, the positive shell 2 is filled with electrolyte, and the positive plate is provided with at least one opening. Further, the opening is a through hole, a blind hole or a recess opened in the middle or around the middle of the positive electrode sheet. Since the positive plate is provided with openings, the storage space of the electrolyte is effectively increased under the premise of ensuring the diameter and thickness...

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PUM

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Abstract

The invention discloses a button lithium battery with an opening-type pole piece. The button lithium battery comprises a cathode cover and an anode housing, wherein an insulating seal ring is arranged between an outer edge of the cathode cover and a shrinkage opening of the anode housing; a lithium ion cathode piece, a battery diaphragm and an anode piece are arranged in the anode housing in sequence from up to down; a pole piece steel ring is arranged between the anode piece and the anode housing; the anode housing is filled with electrolyte; the anode piece is provided with at least one opening. Since the anode piece is provided with the opening, the storage space of the electrolyte is effectively enlarged on the premise of ensuring the diameter and thickness dimensions of the battery anode piece, and better activity can be provided by means of addition of the electrolyte, thereby improving the performance of the button lithium battery and prolonging the service life.

Description

technical field [0001] The invention relates to a button lithium battery, in particular to a button lithium battery with open-hole pole pieces. Background technique [0002] A button lithium battery refers to a lithium-ion battery that looks like a small button. Compared with a cylindrical battery, a button battery has a larger diameter and a thinner thickness, such as a thickness of only 1.6 mm or 3.2 mm. Button lithium battery structure such as figure 1 As shown, including the negative electrode cover 1', the positive electrode case 2', the insulating sealing ring 3' is provided between the outer edge of the negative electrode cover and the upper opening of the positive electrode case, and the lithium ion negative plate 4', Battery diaphragm 5', positive electrode sheet 6', electrode sheet steel ring 9', the positive electrode shell is filled with electrolyte; the existing button lithium battery uses a pair of a thinner negative electrode sheet and a thicker carbon-based ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/04H01M10/052
CPCH01M10/0427H01M10/052Y02E60/10Y02P70/50
Inventor 朱程显张耀坤
Owner 东莞市金邦工艺有限公司