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Lithium-ion battery lamination method and device

A lithium-ion battery and stacking device technology, applied in secondary batteries, battery assembly machines, secondary battery manufacturing, etc., can solve the problems of high cost, many work steps, long time, etc., and reduce work steps and costs. , The effect of saving the cost of tape

Active Publication Date: 2022-02-01
SVOLT ENERGY TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current lamination process has many steps, high cost and long time

Method used

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  • Lithium-ion battery lamination method and device
  • Lithium-ion battery lamination method and device

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Embodiment Construction

[0039] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0040] figure 1 It is a flowchart of a lithium-ion battery stacking method provided by an embodiment of the present invention.

[0041] Such as figure 1 As shown, the embodiment of the present invention provides a lithium-ion battery stacking method, the method comprising:

[0042] S1) Provide a positive electrode sheet, a negative electrode sheet, and a separator that is not coated with an adhesive layer;

[0043] Here, die-cut positive and negative electrode sheets are provided, as well as a non-adhesive separator.

[0044] S2) placing the separator between the positive electrode sheet and the negative electrode sheet, laminating the positive electrode she...

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Abstract

The invention provides a lithium-ion battery stacking method and device, belonging to the field of battery manufacturing. The method includes: providing a positive electrode sheet, a negative electrode sheet, and a separator not coated with an adhesive layer; placing the separator between the positive electrode sheet and the negative electrode sheet for transmission, and performing the process on the positive electrode sheet and the negative electrode sheet Lamination, dispensing glue on the separator, the positive electrode sheet and the negative electrode sheet during the lamination process. In the present invention, glue is dispensed on the diaphragm and the pole piece during the lamination process, and the used diaphragm does not need to be glued in advance; glue is dispensed during the lamination process, and the pole piece and the diaphragm are pasted before the glue layer is solidified, and the diaphragm is stacked. After the sheets are formed into pole groups, they are in a fixed state, and there is no need to paste tapes for fixing, and no need to heat-press the pole groups, which reduces the number of steps, reduces costs, and shortens the production time of batteries.

Description

technical field [0001] The invention relates to the field of battery manufacturing, in particular to a lithium-ion battery stacking method and a lithium-ion battery stacking device. Background technique [0002] The manufacturing process of lithium-ion batteries is complex, and the positive and negative electrodes and separators are particularly important as the core of the battery. The manufacturing process of a lithium battery is usually to combine the positive and negative plates and separators into an electrode group by winding or lamination process, assemble the electrode group into a single cell, and then package multiple single cells into a lithium battery. Among them, the function of the separator is to isolate the positive and negative electrodes, and at the same time cover the negative electrode (the negative electrode covers the positive electrode), so as to ensure that the lithium ions of the positive electrode can penetrate the separator and insert into the nega...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0583H01M10/04
CPCH01M10/0583H01M10/0404Y02E60/10Y02P70/50
Inventor 汪加文黄黎明龚丰登
Owner SVOLT ENERGY TECHNOLOGY CO LTD
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