A lithium battery electrode coating equipment

Abstract

The invention belongs to the field of lithium battery electrode coating, and particularly relates to a lithium battery electrode coating equipment, which includes an extrusion head, a slider, a baffle, an arc plate A, an electric drive module A, a scraper, a roller A, an electric drive Module B, cleaning plate and electric drive module C, etc., wherein the extrusion head has an arc-shaped extrusion groove, and the middle part of the extrusion groove communicates with the adjustment groove C in the extrusion head through a communication groove of equal width, and the adjustment groove C passes through The adjustment groove B is connected with the adjustment groove A in the extrusion head; at the end of coating the copper foil, the arc plate A will be driven by the electric drive module A to clean up the electrode coating remaining in the extrusion groove. At the same time, the foreign matter particles that may block the extrusion groove channel will be effectively cleaned, so as to avoid the situation that the coating on the copper foil is indented along the direction of copper foil movement due to the partial blockage of the extrusion groove by foreign matter , to ensure the flatness of the coating coated on the copper foil, and to improve the yield and efficiency of the copper foil coating film.

Description

technical field [0001] The invention belongs to the field of lithium battery electrode coating, in particular to a lithium battery electrode coating equipment. Background technique [0002] A coating machine used in the battery and electronic photovoltaic industries is a device that coats a roll of substrate with a layer of glue or paint with a specific function. The coating head as the core part of the coating machine can be divided into brush type, scraper type, roller type, curtain type and slit type according to the different coating methods. After the material enters the trough, it cannot be quickly and evenly distributed in the trough, so generally it will cause the coating on the film to be thick in the middle and thin on both sides, but the traditional improvement method for this phenomenon is only suitable for a single viscosity The coating of slurry with a certain extrusion speed does not have universal practicability. In addition, after the slit-type coating hea...

AI Technical Summary

Problems solved by technology

The coating head as the core part of the coating machine can be divided into brush type, scraper type, roller type, curtain type and slit type according to different coating methods. After the material enters the trough, it cannot be quickly and evenly distributed in the trough, so generally it will cause the coating on the film to be thick in the middle and thin on both sides, but the traditional improvement method for this phenomenon is only suitable for a single viscosity And the coating of slurry with a certain extrusion speed is not universally practicable

In addition, after the slit-type coating head has been used for a period of time, due to the poor quality of the slurry, foreign matter or large particles of impurities are mixed in the slurry, the extrusion channel in the slit-type coating head will be partially blocked. Blockage, causing the coating on the film to be sunken, making the coating on the film uneven as a whole, affecting the yield and production efficiency

Images