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Lithium ion battery tab and lithium ion battery packaging method

A technology of lithium-ion batteries and packaging methods, which is applied in the manufacture of secondary batteries, battery pack components, and electrolyte storage batteries, etc. It can solve problems such as increased production costs and poor exposed size of the ear glue, and achieves a reduction in scrap ratio and corrosion prevention risk, effect of eliminating misalignment

Active Publication Date: 2019-02-01
余姚市海泰贸易有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual production process, due to process fluctuations and fluctuations in the size of the ear glue, there will be defective products with poor exposed size of the ear glue
For safety reasons, the general manufacturer will scrap this kind of battery, which will greatly increase the production cost

Method used

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  • Lithium ion battery tab and lithium ion battery packaging method
  • Lithium ion battery tab and lithium ion battery packaging method
  • Lithium ion battery tab and lithium ion battery packaging method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] In this embodiment, the transfer positive tab and the transfer negative tab are collectively referred to as the transfer tab 1 .

[0044] refer to Figure 1 to Figure 8 , a lithium-ion battery tab, including a transfer positive tab and a transfer negative tab arranged on the lithium-ion battery, the transfer positive tab and the transfer negative tab are provided with a tab 2, and the tab 2 is A positioning device is provided for positioning when the aluminum-plastic film 7 is folded in half.

[0045]The positioning device can be a bump 3. Two bumps 3 are arranged on the lug glue 2. The two bumps 3 are respectively arranged on the opposite sides of the positive ear or the opposite side of the negative ear. The bottom surface is on the same level. The height of the bump 3 is not more than half of the thickness of the finished cell, and the bump 3 is included in the glue surface of the ear glue 2 .

[0046] The positioning device can also be a protruding piece 4 that n...

Embodiment 2

[0062] The difference from Embodiment 1 is that the height and length of the bump 3 are different.

Embodiment 3

[0064] The difference from Example 1 is that the positioning device on the ear glue 2 is a tab 4, such as image 3 , Figure 4 shown. After encapsulation, the tab 4 needs to be cut.

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Abstract

The invention discloses a lithium ion battery tab which comprises a switching positive tab and a switching negative tab which are arranged on a lithium ion battery. Tab glue is arranged on the switching positive tab and the switching negative tab, and a positioning device is arranged on the tab glue and used for positioning aluminum-plastic films in folding. The tab glue of the switching tabs is provided with two positioning projections or lugs which are positioned on two side surfaces of the switching tabs, the shell-entering position of a bare cell can be accurately positioned by the aid ofthe positioning projections or lugs on one surface of each switching tab, and alignment of the aluminum-plastic films after turnover can be accurately controlled by the aid of the positioning projections or lugs on the other surface of each switching tab. On one hand, poor exposure of packaged tab glue due to the inaccurate shell-entering position of the bare cell in packaging can be prevented, exposure consistency of the tab is improved, and assembly positioning accuracy of a battery pack assembled by the cell is improved. On the other hand, top edge sealing dislocation can be decreased and even eliminated, and cell length consistency is improved. The lithium ion battery tab is applied to the technical field of batteries.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a lithium-ion battery tab and a packaging method for the lithium-ion battery. Background technique [0002] With the rapid development of today's science and technology, electronic information products occupy an increasingly important position in people's daily life. Lithium-ion batteries have become indispensable chemical power sources due to their high energy density, long cycle life, and high operating voltage. Compared with lithium-ion batteries with steel shells and aluminum shells, soft-pack lithium-ion batteries have grown rapidly due to their advantages such as light weight, good safety performance, unlimited shape, and simple protection design. [0003] At present, commercial lithium-ion batteries are heat-sealed with an aluminum-plastic film as the outer shell, and the positive and negative tabs are bonded to the PP layer in the aluminum-plastic film by hot-melting t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/26H01M10/058H01M10/0525H01M50/531
CPCH01M10/0525H01M10/058H01M50/531Y02E60/10Y02P70/50
Inventor 林珍艳易四勇
Owner 余姚市海泰贸易有限公司
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