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Method for preparing coiled polymer lithium battery and coiled polymer lithium battery

A polymer and lithium battery technology, applied in the direction of secondary batteries, battery pack components, circuits, etc., to reduce the standing time, reduce the deviation, and facilitate the effect of rapid absorption

Active Publication Date: 2014-04-30
HUIZHOU LIWINON NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, prior art still needs to improve and develop

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  • Method for preparing coiled polymer lithium battery and coiled polymer lithium battery
  • Method for preparing coiled polymer lithium battery and coiled polymer lithium battery

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] Figure 1 to Figure 2 A wound polymer lithium battery according to the present invention is schematically shown.

[0024] According to one aspect of the present invention, there is provided a method for preparing a wound polymer lithium battery, comprising the steps of:

[0025] (1) Prepare flat positive electrode sheet 003 and negative electrode sheet 002, positive electrode ear 005, negative electrode ear 006 and separator 001;

[0026] (2), such as figure 1 First wind the separator 001 with a winding needle, then place the beginning of the negative electrode sheet 002 between the above-mentioned separators 001, and then put the beginning end of the positive electrode sheet 003, and the negative electrode sheet 002 and the positive electrode sheet 003 are separated by the separator 001 , where an empty foil position is reserved at the beginning an...

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Abstract

The invention discloses a method for preparing a coiled polymer lithium battery and the coiled polymer lithium battery. The coiled polymer lithium battery comprises a packaging shell and a coiled body assembled in the packaging shell, wherein the coiled body comprises a diaphragm, a positive plate and a negative plate; the positive plate and the negative plate are separated through the diaphragm and are coiled into a certain number of turns; a positive tab and a negative tab are respectively welded at the ends of the positive plate and the negative plate; the exposed end of the positive tab is perpendicular to the width direction of the positive plate; the exposed end of the negative tab is perpendicular to the width direction of the negative plate. Compared with the coiled polymer lithium battery and inner structures of positive and negative plates thereof in the prior art, the coiled polymer lithium battery in the invention has the advantages that spot welding mode and position of the tabs are adjusted, a winding structure of a battery cell is changed, the offset of the central distance between the tabs is reduced, the surfaces of the coiling layer face the airbag, the time of introducing the electrolyte into the winding core is shortened, rapid absorption of the electrolyte is promoted, and the standing time after liquid injection is reduced.

Description

technical field [0001] The invention relates to a lithium ion battery, in particular to a preparation method of a winding polymer lithium battery and the winding polymer lithium battery. Background technique [0002] Soft-pack lithium-ion batteries have the advantages of light weight and good safety performance, so they are increasingly widely used in mobile electronic devices such as Bluetooth, 2G / 3G mobile phones, notebook computers, tablet computers, cameras, and portable mobile power supplies, especially for their excellent Safety performance makes it increasingly replace liquid aluminum or steel lithium-ion batteries. [0003] Polymer lithium-ion batteries can be customized (any size can be customized) and have high energy density. Although polymer lithium-ion batteries have good safety, the winding mechanism also has certain defects. Injected batteries, the electrode surface directly faces the injection port, the electrolyte needs to bypass the electrode surface and p...

Claims

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Application Information

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IPC IPC(8): H01M10/0587
CPCH01M10/0587H01M50/538Y02E60/10Y02P70/50
Inventor 戈志敏于紫阳
Owner HUIZHOU LIWINON NEW ENERGY TECH CO LTD
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