Composite laminated battery core manufacturing control method, composite laminated battery core 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 cell alignment changes, unfixed folding position of the first pole piece, and stacked batteries that do not meet product quality. core and other issues, to achieve high alignment, improve folding quality and folding efficiency, and improve quality and production efficiency

Active Publication Date: 2020-12-01
CONTEMPORARY AMPEREX TECH CO
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  • Abstract
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  • 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 battery core manufacturing control method, composite laminated battery core and lithium battery
  • Composite laminated battery core manufacturing control method, composite laminated battery core and lithium battery
  • Composite laminated battery core manufacturing control method, composite laminated battery core and lithium battery

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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 invention provides a composite laminated battery core manufacturing control method, a composite laminated battery core and a lithium battery, and relates to the field of lithium battery production. The manufacturing control method of the composite laminated battery core is used in the following composite laminated battery core, wherein a first electrode sheet is continuously arranged between afirst diaphragm and a second diaphragm, and a plurality of second electrode sheets are alternately arranged on one sides, far away from the first electrode sheet, of the first diaphragm and the second diaphragm at intervals. According to the invention, the precision of the width of the second electrode sheet is controlled to be the first precision+-A1, and the precision of the distance delta 1 between every two adjacent second electrode sheets is controlled to be the second precision +-A2, so that it is guaranteed that the laminated composite laminated battery core meets the preset alignmentdegree, and the laminating quality is improved.

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 Applications(China)
IPC IPC(8): H01M10/0583H01M10/052H01M4/72H01M2/18
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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