Lithium battery film coating equipment

Abstract

The invention belongs to the field of lithium battery coating, and particularly relates to lithium battery coating equipment, which comprises an extrusion head, sliding blocks, a baffle, guide pins, an arc plate A, a gear A, a volute spiral spring, a shaft A, a roller A, a scraping cutter, a guide seat, a cleaning plate, a gear B, a shaft C, an electric driving module A and an electric driving module B, wherein an adjusting groove A and an adjusting groove C which are communicated through an adjusting groove B are formed in the extrusion head, the adjusting groove C is communicated with the middle of an arc-shaped extrusion groove in the extrusion head through a communication groove, and the communication groove is as wide as the extrusion groove. According to the invention, through the linkage between the two sliding blocks of the adjusting groove A of the extrusion head and the baffle, under the condition that the adjusting groove A is filled with the electrode coating material, theadjusting groove C is transversely and uniformly filled with the electrode coating material through the opened adjusting groove B, so that the whole electrode coating material in the adjusting grooveC is basically heightened at a constant speed, and then the electrode coating material is transversely and uniformly extruded out of the extrusion head from the opening in the lower end of the extrusion groove from the adjusting groove C through the communication groove and is uniformly coated on a copper foil moving around the roller B.

Description

technical field [0001] The invention belongs to the field of lithium battery film coating, and in particular relates to a lithium battery film coating equipment. Background technique [0002] Coating machines are widely used in battery, electronic photovoltaic and other industries. As the core component of the coating machine, the slit extrusion die is in a viscous state during use, so the electrode coating extruded from the trough cannot Diffusion to both sides in a short time, so that the electrode coating is in the state of being thick in the middle and thin on both sides after reaching the carrier film. The electrode coating applied on the film produces a laterally uneven layout, which affects the quality of the lithium battery coating film. [0003] In addition, the slit extrusion die in the traditional coating machine is easily partially blocked by foreign particles mixed in the electrode coating after a period of use, resulting in extrusion from the extrusion die and...

AI Technical Summary

Problems solved by technology

The electrode coating applied on the film produces a laterally uneven layout, which affects the quality of the lithium battery coating film

[0003] In addition, the slit extrusion die in the traditional coating machine is easily partially blocked by foreign particles mixed in the electrode coating after a period of use, resulting in extrusion from the extrusion die and coating on the film. Dents appear on the surface of the electrode paint coating on the carrier, which makes the coating on the thin film carrier uneven and affects its yield

Traditionally, the cleaning of the slit-type extrusion die must be carried out after the shutdown. The cleaning process is cumbersome and takes a lot of time, which affects the production progress.

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