Coating device for PVDF diaphragm for lithium battery

Abstract

The invention discloses a coating device for a PVDF diaphragm for a lithium battery. The coating device is characterized by comprising a rack, wherein an unwinding mechanism, a swinging mechanism, a cleaning mechanism, a coating conversion mechanism, a coating mechanism, a drying mechanism, a cutting mechanism and a winding mechanism are arranged on the rack according to the advancing direction ofthe diaphragm; the rack comprises a vertical plate, a top plate and a supporting plate, wherein the top plate and the supporting plate are vertically arranged on the vertical plate; a plurality of guide rollers used for guiding the conveying direction of the diaphragm are arranged on the vertical plate; the unwinding mechanism comprises a rotating rod and a supporting rod which are fixed on the vertical plate; two mounting plates are rotationally arranged on the rotating rod; two connecting rods are connected between the two mounting plates; a hinge rod is connected to the mounting plate on the outer side; a rotating air cylinder is hinged to the outer end of the supporting rod; a rotating air cylinder piston rod is arranged in the rotating air cylinder; the upper end of the rotating aircylinder piston rod is hinged to the hinge rod; and two unwinding rollers are rotationally arranged between the two mounting plates. The coating device has the advantages that the automation degree ishigh, and the production efficiency of the diaphragm is obviously improved.

Description

technical field [0001] The invention relates to the technical field of lithium battery diaphragm coating, in particular to a coating device for a PVDF diaphragm for a lithium battery. Background technique [0002] Lithium-ion batteries have been widely and rapidly applied in various fields due to their advantages such as high specific energy, long cycle life, good safety performance, environmental friendliness and no memory effect. The basic role of the battery separator in a lithium battery is to separate the positive and negative electrodes, and to absorb the electrolyte to allow lithium ions to pass through. The existing battery diaphragm coating device needs to be shut down during the replacement process of the winding roller and the unwinding roller, which will lead to continuous interruption of the production process, which cannot be carried out continuously, and the coating efficiency is low. Contents of the invention [0003] The purpose of the present invention i...

AI Technical Summary

Problems solved by technology

The existing battery separator coating device needs to be shut down during the replacement process of the winding roller and unwinding roller, w

Images