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Lithium battery pole piece and coating manufacturing method thereof

A production method and technology for lithium batteries, which are applied in electrode manufacturing, lithium storage batteries, electrode current collector coatings, etc., can solve problems such as rolling bulges, defects, and faults, and achieve the effect of preventing unevenness

Active Publication Date: 2021-11-02
BATTERO TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current coating process will have the following problems: after rolling, the powder will fall off and the belt will be broken; performance impact

Method used

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  • Lithium battery pole piece and coating manufacturing method thereof
  • Lithium battery pole piece and coating manufacturing method thereof
  • Lithium battery pole piece and coating manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A method for coating a lithium battery pole piece. Using the coating method of this scheme, the internal stress and extrusion force can be used to make it smooth during rolling, and the internal stress can be released at the same time, and the original phenomena such as bulges and faults can be changed. The method includes the following steps:

[0047] (1) Foil production: Lay a plurality of arrayed grids 10 on the foil 1; the gap L between the grids 10 2 is the width L of grid 10 1 About 1 / 3 of that. Bump height H of grid 10 2 is the average thickness H of coating 2 1 About 1 / 3 of that. The grid 10 is square in shape.

[0048] (2) Slurry coating: such as image 3 , the slurry used for coating is poured into the trough of the coating machine, and coated on the foil 1 to form a coating 2; the coating process ensures that the slurry in the trough is sufficient, the coating speed is stable, The tension is stable; the slurry includes electrode slurry and ceramic slur...

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Abstract

The invention relates to a lithium battery pole piece and a coating manufacturing method thereof. The method comprises the following steps of: (1) manufacturing a foil material, namely laying a plurality of grids (10) arranged in an array on the foil material (1); (2) carrying out slurry coating, namely pouring the slurry used for coating into a trough of a coating machine, and coating the foil material (1) with the slurry to form a coating (2); (3) carrying out coating, namely carrying out transfer coating on the slurry to form a coating layer (3); and (4) carrying out baking, namely baking the coated foil material (1) to obtain the lithium battery pole piece meeting the process requirements. Compared with the prior art, the coating manufacturing method has the advantages of solving the problems of fault and powder falling caused by rolling and the like.

Description

technical field [0001] The invention relates to the field of lithium battery manufacturing, in particular to a lithium battery pole piece and a coating manufacturing method thereof. Background technique [0002] In the era of rapid development of lithium batteries, the industry has higher and higher requirements for lithium battery processes, and coating is a very critical process in the entire lithium battery manufacturing process. The quality of coating directly affects the quality of subsequent processes. The process also has a vital impact on battery capacity, performance, and safety. At present, no matter what kind of coating method is used in the industry, it belongs to the whole surface and planar coating. [0003] The current coating process will have the following problems: after rolling, the powder will fall off and the belt will be broken; performance impact. Contents of the invention [0004] The object of the present invention is to provide a lithium batter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/04H01M10/052B05D1/28B05D3/04
CPCH01M4/0404H01M4/0471H01M10/052B05D1/28B05D3/0413Y02E60/10
Inventor 张卫龙
Owner BATTERO TECH CORP LTD
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