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A Coating Thickness Control Method for Large Roll Rewinding

A thickness control and coating technology, applied in electrode manufacturing, coiling strips, electrode current collector coating, etc., to reduce multiple thickness measurements and estimates of large coils, and increase monitoring.

Active Publication Date: 2021-10-15
宜春国轩电池有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This poses a serious challenge to the production of lithium batteries

Method used

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  • A Coating Thickness Control Method for Large Roll Rewinding

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Embodiment Construction

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] See figure 1 , a method for controlling the thickness of a large coating roll, specifically comprising the following steps:

[0020] (1), first place the rolled pole piece 1 coated on one side on the support roller 2 of the winding device, and the winding shaft driven by the motor on the winding device pulls the rolled pole piece 1 on the support roller 2 to carry out Rolling, the winding shaft includes a winding air expansion shaft roller 3 and a tubu...

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Abstract

The invention discloses a method for controlling the winding thickness of coated large rolls. The thickness of the coiled pole piece coated on both sides is calculated according to the thickness of the coiled pole piece coated on one side and the thickness of the pole piece base material. Because the areal density values ​​on both sides are required to be basically equal, the calculated thickness value of the rolled pole piece coated on both sides is close to the accurate value; the present invention allows the produced large roll to be coated immediately by calculating the maximum number of winding turns. The double-sided coiled pole piece is just placed and filled in the vacuum oven, which maximizes the use of the space of the vacuum oven, reduces the tedious and tedious measurement and estimation of the thickness of large rolls, and also increases the thickness of the pole piece in the process. The monitoring has great guiding significance for production.

Description

technical field [0001] The invention relates to the field of manufacturing lithium-ion batteries, in particular to a method for controlling the thickness of a large coating roll. Background technique [0002] In recent years, with the reduction of petroleum energy and the improvement of environmental awareness, lithium batteries have obvious advantages in high energy density, long cycle life, and environmental protection, and are increasingly favored by the market. This poses a serious challenge to the production of lithium batteries. How to maximize the utilization of equipment resources and complete production tasks with quality and quantity is the ideal goal pursued by every lithium battery company. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for controlling the thickness of a large coated roll. By controlling the diameter and thickness of the large roll, the produced large roll can be placed and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/04B65H26/08
CPCB65H26/08H01M4/04H01M4/0404Y02E60/10
Inventor 钟明明王金龙刘兴亮张迎霞
Owner 宜春国轩电池有限公司