A battery pole piece production process

Abstract

The present invention relates to a battery pole piece production process, mainly including the following steps: preparing a slurry, coating, rolling a roller pole piece, cutting a pole piece, and drying a pole piece. A rolling device includes a rolling frame. A support frame is mounted on the rolling frame. A tensioning mechanism is mounted on a lower end of the support frame. A surface treatmentmechanism, a surface repairing mechanism, and a leveling mechanism are successively disposed on a surface of the support frame from left to right. The present invention can solve the following problems existing in the existing battery pole piece in a rolling operation process: a. The existing equipment directly outputs the pole piece from a rolling gap after performing rolling on the battery polepiece, and the pole piece on which rolling is performed shrinks due to elasticity of the pole piece; consequently, uneven thickness of the coating on the pole piece is caused, and a use effect of thebattery pole piece is affected. b, The existing rolling equipment can only simply roll the pole piece, cannot perform multi-stage extrusion stretching processing on the pole piece, and cannot controla problem of deformation of the pole piece on which rolling is performed.

Description

technical field [0001] The invention relates to the technical field of lithium battery pole piece production technology, in particular to a battery pole piece production technology. Background technique [0002] Lithium-ion batteries have high energy density and high average output voltage. Excellent cycle performance, fast charging and discharging, high charging efficiency, and high output power. long lasting. Widely used in various fields, the pole piece is an important component that affects the service life and use effect of the lithium battery. The production of the pole piece plays a vital role in the lithium battery. In the production of the pole piece, it is divided into preparation slurry , coating slurry, rolling pole piece, pole piece cutting and pole piece drying and other steps, in which the rolling pole piece has a great influence on the thickness of the coating on the pole piece, and the thickness of the coating in the rolling pole piece operation is not uni...

AI Technical Summary

Problems solved by technology

Widely used in various fields, the pole piece is an important component that affects the service life and use effect of the lithium battery. The production of the pole piece plays a vital role in the lithium battery. In the production of the pole piece, it is divided into preparation slurry , coating slurry, rolling pole piece, pole piece cutting and pole piece drying and other steps, in which the rolling pole piece has a great influence on the thickness of the coating on the pole piece, and the thickness of the coating in the rolling pole piece operation is not uniform. Will reduce battery life

[0003] However, the existing battery pole pieces have the following problems in the rolling operation process. a. The existing equipment rolls the battery pole pieces and the pole pieces are directly output from the roll gap. The pole piece shrinks after pressing, resulting in uneven thickness of the coating on the pole piece, which affects the use effect of the battery pole piece. b, the existing rolling equipment can only simply roll the pole piece, and cannot perform multi-stage processing on the pole piece. Squeeze and stretch processing, unable to control the deformation of the pole piece after rolling

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