Coating process suitable for production of lithium battery

A coating process and lithium-ion battery technology, applied in the direction of battery electrodes, electrode collector coatings, circuits, etc., can solve the problems of high cost, long time, waste of foil materials, etc., to improve production efficiency, reduce costs, Effect of saving foil consumption

Inactive Publication Date: 2018-09-11
桑顿新能源科技(长沙)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the coating process of lithium battery production is generally to coat the slurry in the middle of the foil, and leave empty foils on both sides for tabs. Disadvantages such as foil waste, high cost and long time, therefore, it is necessary to improve the existing coating process

Method used

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  • Coating process suitable for production of lithium battery
  • Coating process suitable for production of lithium battery
  • Coating process suitable for production of lithium battery

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Embodiment 1

[0025] A coating process suitable for the production of lithium batteries, comprising the following steps: preparing positive and negative electrode materials, preparing the ingredients of the coating slurry, stirring the ingredients of the coating slurry, mixing them for standby, and discharging the positive and negative electrode materials Roll operation; clip the baffle plates on both sides and the middle of the empty foil, then add the coating slurry, and then connect and pull the sheet to carry out large-scale coating; dry the coated slurry, and then mold it after drying. Cutting, and then winding; that is, the coating operation is completed.

[0026] figure 1 It is a coating process flow chart. The patent of the present invention is very different from the current method in the way of adjusting the chute. The current process is to fix the two sides of the chute with baffles and feed in the middle. The patent of the present invention is the two sides and the middle Clamp...

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Abstract

The invention discloses a coating process suitable for production of a lithium battery, which includes the steps of: material preparation, stirring, unreeling, adjustment of baffles of a material trough, material addition, joint of sheets, pulling of sheets, coating, drying, reeling and mold-cutting. In the coating step, a void foil remains between foil materials of electrode sheets, so that aftercoating and drying, the product can be directly mold-cut, thus omitting a cutting step. The coating process is subjected to creative modification; the modified coating method is simple and has convenience in mold-cutting, so that the coating process has better effect on lithium batteries, can save use amount of a foil material, reduces cost and increases production efficiency.

Description

technical field [0001] The invention belongs to the technical field of lithium battery production, and in particular relates to a coating process suitable for lithium battery production. Background technique [0002] In recent years, the lithium battery industry has developed rapidly. Lithium batteries have been widely used in all aspects of social life. They have the advantages of high energy density, high voltage, high cycle and high operating temperature. Structurally speaking, a lithium battery generally consists of a positive pole piece, a negative pole piece, an electrolyte, and a separator between the positive pole piece and the negative pole piece. Generally, the positive electrode sheet is uniformly coated with the active material slurry on the aluminum foil; the negative electrode sheet is generally coated with the graphite carbon active material slurry evenly on the copper foil. Therefore, the uniformity, stability, quality of the coating film and the amount of f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/04H01M4/139
CPCH01M4/0404H01M4/139Y02E60/10
Inventor 赵春阳娄忠良温转萍
Owner 桑顿新能源科技(长沙)有限公司
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