Composite laminated cell production control method, composite laminated cell and lithium battery

A control method and stacking technology, which is applied to lithium batteries, non-aqueous electrolyte batteries, secondary batteries, etc., can solve the problems of stacked batteries that do not meet the product quality, changes in the alignment of batteries, and inaccurate folding positions of the first pole piece. Fixed and other problems to achieve the effect of improving folding quality and folding efficiency, high alignment, improving quality and production efficiency

Active Publication Date: 2022-02-01
CONTEMPORARY AMPEREX TECH CO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the manufacturing process of folded composite laminated cells, because the first pole piece is continuously arranged, the folding position of the first pole piece is not fixed during the folding process, which will lead to changes in the alignment of the entire battery cell
When the first pole piece cannot completely cover the second pole piece after folding, a laminated cell that does not meet the product quality requirements will be produced

Method used

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  • Composite laminated cell production control method, composite laminated cell and lithium battery
  • Composite laminated cell production control method, composite laminated cell and lithium battery
  • Composite laminated cell production control method, composite laminated cell and lithium battery

Examples

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no. 1 example

[0050] Please refer to figure 1, this embodiment provides a composite laminated cell production control method, which is applied to the following composite laminated cell, the composite laminated cell includes a first diaphragm 30, a second diaphragm 40, a first pole piece 10 and The second pole piece 20. Wherein, before stacking, the first pole piece 10 is continuously arranged between the first diaphragm 30 and the second diaphragm 40, and a plurality of second pole pieces 20 are alternately arranged between the first diaphragm 30 and the second diaphragm 40 away from the first diaphragm 30 and the second diaphragm 40. One side of the pole piece 10, for example, if the first second pole piece 20 is arranged on the side of the first diaphragm 30 away from the first pole piece 10, then the second second pole piece 20 is arranged on the side away from the second diaphragm 40. On one side of the first pole piece 10 , the third second pole piece 20 is arranged on the side of the...

no. 2 example

[0061] An embodiment of the present invention provides a composite laminated cell, including a first diaphragm 30 , a second diaphragm 40 , a first pole piece 10 and a second pole piece 20 . combine figure 1 , before stacking, the first pole piece 10 is continuously arranged between the first diaphragm 30 and the second diaphragm 40, and a plurality of second pole pieces 20 are alternately arranged on the first diaphragm 30 and the second diaphragm 40 away from the first pole 10 side of sheet. That is, the first pole pieces 10 are continuously arranged between the first diaphragm 30 and the second diaphragm 40 , that is, inside the first diaphragm 30 and the second diaphragm 40 ; the second pole pieces 20 are arranged at equal intervals and alternately on the first diaphragm 30 and the outside of the second diaphragm 40 . Wherein, the width of the second pole piece 20 is W1, the accuracy of the width of the second pole piece 20 is the first precision ± A1, and the accuracy o...

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Abstract

The application provides a manufacturing control method of a composite laminated battery cell, a composite laminated battery cell and a lithium battery, relating to the field of lithium battery production. The manufacturing control method of the composite laminated battery is used in the following composite laminated battery, the first pole piece is continuously arranged between the first diaphragm and the second diaphragm, and a plurality of second pole pieces are alternately arranged on the first diaphragm and the side of the second diaphragm away from the first pole piece. By controlling the accuracy of the width of the second pole piece to be the first precision ± A1, and controlling the accuracy of the distance δ1 between two adjacent second pole pieces to be the second precision ± A2, it is ensured that the laminated composite laminated cell meets Preset alignment improves lamination quality.

Description

technical field [0001] The invention relates to the field of lithium battery production, in particular to a manufacturing control method of a composite laminated battery cell, a composite laminated battery cell and a lithium battery. Background technique [0002] The composite lamination process is a common composite lamination cell manufacturing process. The composite lamination process can improve the lamination efficiency and is widely used in battery manufacturing technology. [0003] However, in the manufacturing process of the folded composite laminated cell, since the first pole piece is continuously arranged, the folding position of the first pole piece is not fixed during the folding process, which will lead to changes in the alignment of the entire battery cell. When the first pole piece cannot completely cover the second pole piece after folding, a laminated cell that does not meet the product quality requirements will be produced. Contents of the invention [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0583H01M10/052H01M4/72H01M50/466
CPCH01M10/0583H01M10/052H01M4/72Y02E60/10Y02P70/50
Inventor 左龙龙阳如坤魏宏生
Owner CONTEMPORARY AMPEREX TECH CO
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