Lithium battery production equipment

Abstract

The invention belongs to the technical field of lithium batteries, and in particular relates to a lithium battery production equipment, which includes a liquid containing casing, a scraper, a coating roller, a material tray, and a back roller. On the one hand, the air bubbles in the slurry gathered at the upper end where the outer surface of the backing roller and the outer surface of the coating roller are close to each other exert a squeezing effect; on the other hand, the movement of the two cleaning blocks vibrates the slurry As a result, the air bubbles in the vibrated slurry are easily discharged, which can reduce the air entrainment on the coating surface due to the relatively large gap between the coating roller and the back roller during the coating process and the high coating speed. Phenomenon of many tiny air bubbles. During the swinging process of the air bubble removal block, the first and second removal blocks with the opposite movement direction and the same number are installed alternately and sequentially to ensure that the slurry collected at the upper end where the outer surface of the back roller and the outer surface of the coating roller are close to each other The stability of the material pressure ensures the uniformity of the coating thickness.

Description

[0001] Technical field [0002] The invention belongs to the technical field of lithium batteries, and in particular relates to a lithium battery production equipment. Background technique [0003] In the manufacturing process of lithium batteries, slurry coating is the next process after the preparation of slurry is completed. The main purpose of this process is to evenly coat the slurry with good stability, good viscosity and good fluidity on the positive and negative sides. on the pole collector. Electrode coating is of great significance to the capacity, consistency, and safety of lithium batteries. [0004] The existing coating methods are roughly divided into three types: [0005] The first, blade coating, is generally used in laboratory equipment. [0006] The second type is the slit extrusion type, which is generally used for power batteries. [0007] The third type is the roller coating transfer method, which is generally used in places where more lithium batterie...

AI Technical Summary

Problems solved by technology

If the gap is relatively large, air entrainment will easily occur when the coating speed is high, and there will be many tiny bubbles on the coating surface.

[0009] Sometimes in order to increase the output, the coating speed is increased, and the air entrainment problem also occurs. In order to eliminate this problem, the operation method of reducing the gap is adopted, but the gap is too small, so that the coating roller and the back roller squeeze each other, and the additional The load on the motor and reducer is greatly increased, causing abnormal wear and tear

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