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Folding insertion piece type battery and manufacturing process thereof

A manufacturing process and inserting technology, which is applied in the field of folded inserting battery and its manufacturing process, which can solve the problems of battery short circuit, dust piercing the diaphragm, easy powder falling, etc.

Pending Publication Date: 2021-09-10
XINYU GANFENG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shell generally has a cylindrical steel shell, an aluminum shell, and an aluminum-plastic film soft bag. The battery cell is mainly composed of a positive pole piece, a diaphragm, and a negative pole piece. Risk of dust piercing the separator, causing micro-short circuits in the battery

Method used

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  • Folding insertion piece type battery and manufacturing process thereof
  • Folding insertion piece type battery and manufacturing process thereof
  • Folding insertion piece type battery and manufacturing process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Reference attached Figure 1-2 , the present invention provides a folded insert type battery, comprising: an aluminum-plastic film outer package and an electrode group, wherein the electrode group is housed inside the aluminum-plastic film outer package, and the cavity formed by the electrode group and the aluminum-plastic film outer package It is filled with electrolyte solution; the pole group includes a first pole piece 1 and a composite electrode 2 , the composite electrode 2 is designed in a Z-shaped fold, and the folded composite electrodes 2 are interleaved with the first pole piece 1 .

[0027] The present invention also includes a pole lug, and the guide handle 3 of the pole group is connected to the pole lug by welding.

[0028] The tab includes a metal strip and tab glue, the tab glue is fused on the metal strip, and the metal strip is welded to the guide handle 3 .

[0029] The composite electrode 2 includes a second pole piece 4 and a diaphragm 5, and the ...

Embodiment 2

[0033] The present invention also provides a manufacturing process of a folded insert type battery. The composite electrode of the pole group is folded in a Z shape, and the first pole piece is inserted between the folded composite electrodes, and then the pole group is accommodated in an aluminum-plastic film In the outer packaging, the guide handle of the pole group and the metal strip of the tab are welded together, the tab glue and the aluminum-plastic film are welded together, and then the electrolyte is injected to form a folded insert battery.

[0034] The composite electrode includes a second pole piece and a diaphragm, and the second pole piece and the diaphragm are combined together.

[0035] In this embodiment, the second pole piece is a whole pole piece, which can be used as a negative pole or a positive pole, and is provided with a single guide handle or a plurality of guide handles, and the guide handle is molded by laser die-cutting or tool die-cutting , the gui...

Embodiment 3

[0040] Such as image 3 As shown, the difference between this embodiment and embodiment 1 is that the composite electrode is formed in the following manner: the second pole piece is composited with the diaphragm, then cut and stacked.

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Abstract

The invention discloses a folding insertion piece type battery and a manufacturing process thereof, which belong to the technical field of battery manufacturing. The folding insertion piece type battery comprises an aluminum-plastic film outer package and a pole group, the pole group is accommodated in the aluminum-plastic film outer package, and a cavity formed by the pole group and the aluminum-plastic film outer package is filled with electrolyte; the pole group comprises a first pole piece and a composite electrode, the composite electrode is folded in a Z shape, and the first pole piece is inserted between the folded composite electrodes. The die cutting process of the negative plate can be reduced, and dust pollution caused by die cutting of the negative plate is avoided.

Description

technical field [0001] The invention belongs to the technical field of battery production, and more specifically relates to a folded insert battery and a production process thereof. Background technique [0002] New energy batteries belong to green energy, and more and more attention has been paid to them, and they have developed rapidly in recent years. The commonly used battery type is a lithium battery, which has a large energy density and high safety, and is currently the most used type of battery. Existing lithium-ion batteries are mainly composed of casings and batteries. The shell generally has a cylindrical steel shell, an aluminum shell, and an aluminum-plastic film soft bag. The battery cell is mainly composed of a positive pole piece, a diaphragm, and a negative pole piece. Risk of dust piercing the separator, causing micro-short circuits in the battery. [0003] Therefore, how to provide a foldable tab-type battery and its manufacturing process is an urgent pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/04H01M10/052H01M10/0583
CPCH01M10/045H01M10/0454H01M10/052H01M10/0583Y02P70/50Y02E60/10
Inventor 戈志敏肖海燕余小旦王永伟刘小华刘俊吴洪枫刘建刚章琳
Owner XINYU GANFENG ELECTRONICS CO LTD
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