Speed and tension control method for eliminating pole piece slipping or extension accumulative errors

A tension control and accumulative error technology, which is applied in the direction of electrode manufacturing, battery electrodes, and devices for coating liquid on the surface, can solve the problems of affecting coating quality, affecting production efficiency, and prone to broken belts, so as to avoid pole fragments Belt, improve production efficiency, eliminate the effect of wasting time

Pending Publication Date: 2021-10-01
SHENZHEN NEW KATOP AUTOMATION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0021] In order to overcome the deficiencies of the prior art, the present invention provides a speed and tension control method that eliminates pole piece slipping or elongat...

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  • Speed and tension control method for eliminating pole piece slipping or extension accumulative errors

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Embodiment Construction

[0043] The idea, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features and effects of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts belong to The protection scope of the present invention. In addition, all the connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but mean that a better connection structure can be formed by adding or reducing connection accessories according to specific implementation conditions. Each technical feature in the present invention can be combined interactively on the premise of not conflictin...

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Abstract

The invention discloses a speed and tension control method for eliminating pole piece slipping or extension accumulative errors. The method comprises the following steps that action grades of a coating mechanism, a traction spliced belt, a tension adjusting mechanism, a winding and unwinding mechanism, a cutoff mechanism and a belt splicing mechanism are divided according to coating quality grade requirements; coating working time and non-coating working time are divided according to the divided action grades, and within the coating working time, coating is normally carried out, and the constant speed and constant tension of a pole piece are kept; and within the non-coating working time, coating is not carried out, and speed and tension adjustment of length error compensation is allowed to be carried out on the pole piece. According to the speed and tension control method for eliminating the pole piece slipping or extension accumulative errors, the coating quality cannot be affected, pole piece tension fluctuation is reduced, the pole piece belt breakage probability is reduced, the belt splicing time is saved, and the production efficiency and the production benefit are improved.

Description

technical field [0001] The invention relates to a control method in the field of pole piece coating, in particular to a speed and tension control method for eliminating the pole piece slipping or elongation accumulation error. Background technique [0002] As we all know, pole piece coating is a very important process in the lithium battery production process, and the coating quality of the pole piece directly affects the production quality and production efficiency of the battery. [0003] With the growth of the lithium battery industry market, the demand for production capacity increases, the coating speed increases, the width of the foil increases, and in order to improve the drying efficiency, the viscosity of the slurry also gradually increases. [0004] The above-mentioned increase in speed, width and viscosity leads to an increase in the liquid shear force for slurry transfer. Correspondingly, if the foil speed and tension fluctuations are not well controlled, the fl...

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Application Information

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IPC IPC(8): B65H23/188B65H37/00B65H43/00B05C1/08B05C13/02H01M4/04H01M4/139
CPCB65H23/1888B65H37/00B65H43/00B05C1/08B05C13/02H01M4/04H01M4/139B65H2701/1133B65H2701/173Y02E60/10
Inventor 樊振华
Owner SHENZHEN NEW KATOP AUTOMATION TECH
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