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Winding method for lithium ion battery battery core with long ear-pole

A technology of lithium-ion batteries and tabs, which is applied to secondary batteries, circuits, electrical components, etc., can solve the problems of poor battery consistency, drift of battery internal resistance, cumbersome procedures, etc., to overcome the drift of battery internal resistance, overcome Increased contact resistance and easy operation

Inactive Publication Date: 2006-05-10
ZHENGZHOU BAK BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the above method to manufacture batteries has the following disadvantages: 1) The process is cumbersome; 2) The cover plate is welded after entering the shell, which is inconvenient to operate; 3) The cover plate is welded after entering the shell will cause the internal resistance of the battery to drift, unstable, and the battery is consistent bad sex

Method used

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  • Winding method for lithium ion battery battery core with long ear-pole
  • Winding method for lithium ion battery battery core with long ear-pole
  • Winding method for lithium ion battery battery core with long ear-pole

Examples

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Embodiment Construction

[0015] Below by embodiment and in conjunction with accompanying drawing, the method of the present invention is described in detail:

[0016] A lithium-ion battery cell with long tabs, such as figure 1 As shown, it consists of an aluminum shell cover plate 6, a positive pole tab 1, a negative pole tab 2, a positive pole piece 3, a negative pole piece 4 and a separator 5, and the positive pole tab 1 on the battery cell is directly connected to the aluminum shell cover plate 6. .

[0017] A method for winding lithium-ion battery cells with long tabs, comprising the steps of connecting a cover plate and winding in sequence;

[0018] Such as figure 2 with image 3 As shown, the steps for connecting the cover plate are to first weld the cover plate 6 to one end of the positive tab 1, then weld the other end of the positive tab 1 to the positive sheet 3, and weld the negative tab 2 to the negative sheet 4. ;

[0019] Such as figure 1 , image 3 with Figure 4 As shown, the ...

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Abstract

This invention discloses one long electrode ear lithium ion battery chip rolling method, which comprises the following steps: the said connection cover connects one end to electrode ear and other end to cover board; the said rolling is to overlap the isolated front and negative electrode slices along same direction to make electricity chip. This invention also discloses one long electrode ear lithium ion battery chip with one directly connected to cover board. This invention improves consistency of battery to connect with cover board before rolling.

Description

【Technical field】 [0001] The invention relates to the field of lithium-ion batteries, in particular to a winding method for lithium-ion battery cells with long tabs. 【Background technique】 [0002] Since the concept of "rocking chair battery" (RCB) was proposed in 1980, Japan's Sony Corporation and Sanyo Corporation began practical research on lithium-ion secondary batteries in 1985 and 1988, respectively. With outstanding features such as large specific energy, small self-discharge, wide application temperature range, stable working voltage, and long storage life, all countries in the world are paying attention to the application of lithium-ion secondary batteries in the field of communications, portable electronic products, electric vehicles, and aerospace. The applications showed great interest and enthusiasm, and the performance and manufacturing process of lithium-ion secondary batteries were continuously explored and improved. [0003] In lithium battery cells, the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0587
CPCY02E60/10Y02P70/50
Inventor 张志文邵戈李鹏李艳斌夏青松苏铭汉
Owner ZHENGZHOU BAK BATTERY CO LTD