Pole piece pressing device for lithium battery production

Abstract

The invention relates to a pole piece pressing device for lithium battery production, which comprises a main body box, a first pressing roller and a second pressing roller, wherein the front surface of the main body box is provided with an opening and closing door, the upper surface of the main body box is fixedly connected with an uncoiler, one side of the main body box is fixedly connected with a coiler, the inner wall of the main body box is fixedly connected with a top cover, the upper surface of the top cover is fixedly connected with a guide roller, an adjusting assembly is arranged on the inner wall of the main body box, the upper surface of the top cover is fixedly connected with a reversing assembly, and a powder removing assembly is arranged on the inner wall of the main body box. According to the invention, the second pressing roller is moved through an adjusting assembly, the distance between the first pressing roller and the second pressing roller is adjusted, the second pressing roller is prevented from deviating due to irregular positive and negative electrode materials through a reversing assembly, and powder adhered to the surfaces of the first pressing roller and the second pressing roller is removed through the powder removing assembly, so that the pole piece pressing quality of the pole piece pressing device for lithium battery production is improved.

Description

technical field [0001] The invention relates to the technical field of lithium battery production, in particular to a pole piece pressing device for lithium battery production. Background technique [0002] Lithium battery is a primary battery that uses lithium metal or lithium alloy as the negative electrode material and uses non-aqueous electrolyte solution. The pole piece is an important part of the lithium battery. The quality of the pole piece directly affects the quality of the lithium battery. The pole piece The manufacturing process mainly includes: mixing, coating, rolling and slitting. Rolling is to compress the coated positive and negative materials so that they can be compacted and better attached to aluminum foil or copper. Foil, improve the quality of the pole piece, the process needs to use the pole piece pressing device. [0003] The pole piece pressing device uses two compacting rollers to compress the pole piece. However, there are still some defects in th...

AI Technical Summary

Problems solved by technology

[0004] 1. The distance between the two compaction rollers is inconvenient to adjust, or the adjustment accuracy is not enough, resulting in the thickness of the pole piece not meeting the design standards, which directly affects the quality of the pole piece;

[0005] 2. The compacting rollers with a well-adjusted spacing, during the working process, due to the difference in the positive and negative electrode materials coated on the surface of the pole piece, when the compacting roller compresses the positive and negative electrode materials, it will be affected by positive and negative The reaction force of the polar material causes the compaction roller to deviate, which affects the effect of pressing;

[0006] 3. After the compaction roller works for a long time, its surface will inevitably be contaminated with positive and negative electrode material powder, which will cause uneven force on the pole piece and reduce the quality of the pole piece.

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