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Production method of laminated cells

A manufacturing method and laminated technology, which is applied in secondary battery manufacturing, final product manufacturing, winding/folding electrodes, etc., can solve problems such as low efficiency of lamination process, coating peeling off, affecting battery performance, etc.

Inactive Publication Date: 2019-02-15
DONGGUAN ALI AUTOMATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The traditional cell manufacturing process mainly realizes assembly by winding. The winding speed of the cell determines the production efficiency of the cell. However, when the cell reaches a certain thickness, the coating on the side will fall off, which will affect the performance of the cell.
Now the new stacking process can realize the production of special-shaped cells, but the efficiency of the stacking process is low and cannot achieve efficient production

Method used

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  • Production method of laminated cells
  • Production method of laminated cells
  • Production method of laminated cells

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment provides a method for manufacturing a stacked battery cell for producing a single battery cell, including:

[0036] S10: Provide as figure 1 As shown in the diaphragm 1, the diaphragm 1 is marked with a number of reference lines 103 along its length direction. The reference line 103 divides the diaphragm 1 into a number of equally spaced lamination segments 101, and the interval between two adjacent lamination segments 101 102 , the length dimension of a spacer section 102 is greater than the length dimension of a section of cladding section 101 .

[0037] Specifically, the length dimension of a spacer section 102 is equal to the thickness dimension of a group of positive electrode modules 201 , the sum of the length dimension of a group of positive electrode modules 201 and the thickness dimension of a group of negative electrode modules 202 . Certainly, the length dimension of a spacer section 102 may also be slightly larger than the sum of the thickn...

Embodiment 2

[0045] This embodiment provides a method for manufacturing laminated batteries for synchronous production of multiple single batteries, including:

[0046] S10: if image 3 As shown, the diaphragm 1 is divided into a plurality of covering segments 101 distributed at equal intervals. Between two adjacent covering segments 101 is a spacer section 102 .

[0047] Specifically, the length dimension of a spacer section 102 is equal to the thickness dimension of a group of positive electrode modules 201 , the sum of the length dimension of a group of positive electrode modules 201 and the thickness dimension of a group of negative electrode modules 202 . Certainly, the length dimension of a spacer section 102 may also be slightly larger than the sum of the thickness dimension of a group of positive electrode modules 201 , the length dimension of a group of positive electrode module groups 201 , and the thickness dimension of a group of negative electrode module groups 202 .

[0048]...

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Abstract

The invention relates to the technical field of battery production and particularly discloses a production method of laminated cells. The method comprises the following steps: a separator is providedand marked with a plurality of baselines in the length direction of the separator, the baselines divide the separator into a plurality of equivalently spaced lamination sections, an interval section is formed between every two adjacent lamination sections, and each interval section is longer than each lamination section; an electrode module is attached to each lamination section and comprises a cathode module and an anode module which are located on two sides of the lamination section respectively, each module is formed by alternate lamination of a plurality of electrode plates with double-sided coatings, the cathode module contains cathode plates on the bottommost layer and the topmost layer, and the anode module contains anode plates on the bottommost layer and the topmost layer; the separator is folded, the electrode modules are stacked in the thickness direction of the separator, and every two adjacent electrode modules are spaced by the interval section located between the two electrode modules. With the adoption of the production method of the laminated cells, production efficiency can be increased by increasing lamination speed of the cells.

Description

technical field [0001] The invention relates to the technical field of battery manufacturing, in particular to a method for manufacturing laminated batteries. Background technique [0002] A battery cell generally refers to a single electrochemical cell containing positive and negative electrodes, which is generally not used directly. Different from batteries, batteries contain protective circuits and casings, and cannot be used directly. [0003] The composition of the lithium-ion secondary rechargeable battery is as follows: battery cell + protection circuit board. The rechargeable battery removes the protective circuit board and it is the battery cell. The battery cell is the storage part of the rechargeable battery. The quality of the cell directly determines the quality of the rechargeable battery. [0004] Generally, batteries are divided into three types: aluminum shell batteries, soft pack batteries (also known as "polymer batteries"), and cylindrical batteries. ...

Claims

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Application Information

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IPC IPC(8): H01M10/0583H01M10/0525H01M10/04
CPCH01M10/0431H01M10/0525H01M10/0583Y02E60/10Y02P70/50
Inventor 李新宏文明杜涛刘烈赵忠辉
Owner DONGGUAN ALI AUTOMATION CO LTD
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