Battery pole piece coating device

Abstract

The invention discloses a battery pole piece coating device. The battery pole piece coating device comprises a discharging roller, two tightening rollers and a winding roller which are sequentially arranged, wherein a coating mechanism is arranged between the two tightening rollers, the coating mechanism comprises a coating box containing slurry, a coating roller is installed on the coating box, the lower part of the coating roller is immersed in the slurry, and the upper part of the coating roller extends out of the coating box; mounting frames are fixed to the positions, located at two sides of the coating roller, of the upper end of the coating box separately; scraping rollers are mounted on the mounting frames separately; a drying box is arranged between the tightening rollers and the winding roller; a feeding hole and a discharging hole are formed in the two ends of the drying box separately; the tightening roller close to the winding roller is arranged at the feeding hole in the drying box; a traction roller is installed at the discharging hole in the drying box; and a heating mechanism is arranged in the drying box. According to the battery pole piece coating device, uniform coating can be realized, and the coated pole piece can be dried in time.

Description

technical field [0001] The invention relates to a pole piece production device, in particular to a battery pole piece coating device. Background technique [0002] In the battery manufacturing process, coating is the core process and the main process step that determines the performance of the battery. In order to ensure the accuracy and consistency of coating, expensive and bulky coating machines are needed to coat the positive and negative electrodes of lithium-ion batteries. The coating roller in the existing coating device usually absorbs the coating in the slurry tank and then directly coats it on the pole plate substrate. Because the coating roller dips a large amount of slurry, it cannot be evenly coated during coating. And the slurry will drip in a large amount, causing the waste of slurry. Secondly, it needs to be dried in time after coating to prevent the slurry from being scratched during the transmission of the pole piece. Contents of the invention [0003] ...

AI Technical Summary

Problems solved by technology

In order to ensure the accuracy and consistency of coating, expensive and bulky coating machines are needed to coat the positive and negative electrodes of lithium-ion batteries

The coating roller in the existing coating device usually absorbs the paint in the slurry tank and then directly coats it on the pole piece substrate. Because the coating roller dips a large amount of slurry, it cannot be evenly coated during coating. And the slurry will drip a lot, resulting in a waste of slurry

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