Method for producing laminated battery

A manufacturing method and battery technology, which are applied in the field of lithium ions, can solve problems affecting battery performance, and the contact between electrode monomers and electrode monomers is not tight, and achieve high safety performance and high efficiency.

Inactive Publication Date: 2016-10-12
HEFEI GUOXUAN HIGH TECH POWER ENERGY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The battery core formed by winding laminated batteries in one direction is elliptical in cross-section, which will lea

Method used

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  • Method for producing laminated battery
  • Method for producing laminated battery

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing:

[0020] A method for manufacturing a laminated battery, comprising the following sequential steps:

[0021] S1: take the positive electrode sheet, the negative electrode sheet material and the strip separator 3 for use;

[0022] S2: cutting the positive electrode sheet and the negative electrode sheet into a plurality of standard-sized positive electrode sheets 1 and negative electrode sheets 2;

[0023] S3: A plurality of positive electrode monoliths 1 are evenly arranged on one side of the strip-shaped separator 3, and a plurality of negative electrode monoliths 2 are evenly arranged at intervals on the other side of the strip-shaped diaphragm 3, and both sides of the strip-shaped diaphragm 3 The positive monolithic and the negative monolithic are set oppositely, such as figure 1 shown.

[0024] S4: fix the positive electrode monolith and the negative electrode monolith...

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Abstract

The invention relates to a method for producing a laminated battery. The method comprises the following steps: taking a positive plate, a negative plate (material) and a belt-shaped diaphragm for standby use; applying a glue liquid on one side of the positive plate as well as that of the negative plate, and carrying out baking and rolling for standby use; cutting the obtained positive plate and the obtained negative plate into a plurality of standard-sized positive uniwafers and a plurality of standard-sized negative uniwafers; arranging the positive uniwafers uniformly on one side of the belt-shaped diaphragm, while arranging the negative uniwafers on the other side of the belt-shaped diaphragm in such a manner that the negative uniwafers and the positive uniwafers are opposite to each other; fixing the positive uniwafers and the negative uniwafers on two sides of the belt-shaped diaphragm according to a thermal compounding method; folding the complex of the positive uniwafers, the diaphragm and the negative uniwafers in a Z-shaped manner to form a battery roll core, and then carrying out assembling, liquid injection, formation and capacity grading to obtain the laminated battery. The method provided by the invention has the advantages that the battery production efficiency is improved; the problem that electrode uniwafers in a spirally wound laminated battery are not in close contact is solved; the safety performance of the laminated battery is improved.

Description

[0001] technical field [0002] The invention relates to the technical field of lithium ions, in particular to a method for manufacturing a laminated battery. Background technique [0003] Lithium-ion batteries have the advantages of high energy density, long cycle life, small self-discharge, and no memory effect. Since their commercialization, they have received extensive attention and applications. [0004] At present, there are two main production methods of lithium-ion batteries: winding type and laminated type. The winding battery is to make the positive electrode sheet and the negative electrode sheet into continuous long sheets, separated by a separator in the middle, and then made into a battery core by winding. This kind of traditional winding lithium-ion battery has the problem of stress concentration in the place where the pole piece is bent. The long-term accumulation of expansion and contraction of the pole piece caused by charging and discharging may cause def...

Claims

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Application Information

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IPC IPC(8): H01M10/0583
CPCH01M10/0583Y02E60/10Y02P70/50
Inventor 刘春丽曹利娜马小路刘京生
Owner HEFEI GUOXUAN HIGH TECH POWER ENERGY
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