Lithium battery coating machine

Abstract

The invention relates to the technical field of lithium battery production, and discloses a lithium battery coating machine which comprises a shape seat, the two inner walls of the shape seat are movably connected with a back roller through a rotating shaft, the outer side of the back roller is in contact with a pole piece, the two inner walls, corresponding to the position of the back roller, of the shape seat are movably connected with a coating roller through a rotating shaft, and the coating roller is in contact with the outer side of the back roller. The surface of the coating roller makes contact with paint, and the outer surfaces of the rotating shafts located at the two ends of the coating roller are connected with the movable rings in a clamped mode. The upper part, the upper arc part, the lower part and the lower arc part are arranged above and below the gap between the back roller and the coating roller, a moving route is provided for coating according to the position relation formed by the upper part, the lower part, the back roller and the coating roller, it is guaranteed that the coating can make stable and accurate contact with a pole piece and is transferred to the surface of the pole piece, and the coating quality is improved. The size of the gap between the back roller and the coating roller does not need to be strictly controlled, so that the problems that the coating cannot be fed due to overlarge gap and the coating is extruded to be damaged due to oversmall gap are avoided, and the production quality of pole pieces is effectively ensured.

Description

technical field [0001] The invention relates to the technical field of lithium battery production, in particular to a lithium battery coating machine. Background technique [0002] Lithium batteries have the advantages of high voltage, large capacity, long cycle life, no memory effect, light weight and wide working range. In the prior art, there are many types of lithium battery coating machines. For the common lithium battery coating machine, along the movement direction of the pole piece, there are in turn an unwinding device for unwinding the pole piece outward, a A coating device for coating the pole piece, a drying device for drying the liquid coating on the pole piece, and a winding device for winding the pole piece. [0003] Among the existing coating methods, the roller coating transfer coating method is generally used in places where lithium batteries are consumed more. It drives the coating to move through the rotation of the coating roller, and uses the comma scr...

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the use of the existing coating machine proposed in the background technology, the present invention provides a lithium battery coating machine, which is equipped with upper and lower parts between the back roller and the coating roller. components, effectively ensure that the coating is accurately transferred to the surface of the pole piece, and at the same time improve the uniformity of the coating surface, which solves the technical problems raised in the above background technology

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