Pole piece surface treatment method, pole piece surface treatment device and piece manufacturing machine with pole piece surface treatment device

Abstract

The invention discloses a pole piece surface treatment method, a pole piece surface treatment device and a piece manufacturing machine comprising the pole piece surface treatment device. The pole piece surface treatment device comprises a grinding plate, a working zone, a first hairbrush, a grinding roller and a power source, wherein the grinding plate is used for fixing a pole piece; the working zone is used for surface treatment; the first hairbrush is used for sweeping the pole piece; the grinding roller is used for grinding the pole piece; the power source is used for driving the grinding roller; the first hairbrush is arranged on the inlet side of the working zone; and the grinding roller is arranged on the rear side of the first hairbrush along the motion direction of the pole piece. By usingthe pole piece surface treatment device adoptingthe pole piece surface treatment method provided by the invention, the height of burrs can be reduced, the dust on the surface of the pole piece is reduced, the surface quality of the pole piece is improved, and a diaphragm is prevented from being punctured when a battery is produced by utilizing the pole piece. The pole piece produced by utilizing the piece manufacturing machine is high in quality.

Description

technical field [0001] The invention relates to the technical field of battery pole piece production, in particular to a pole piece surface treatment method and a treatment device, and a tablet making machine with the pole piece surface treatment device. Background technique [0002] The pole piece is an important part of the battery, which is divided into positive pole piece and negative pole piece. The positive electrode sheet is coated with a slurry containing lithium ions on aluminum platinum, and the negative electrode sheet is coated with a slurry whose main component is graphite on copper platinum. During production, the positive electrode sheet and the negative electrode sheet are separated by separator paper, and then folded into the desired shape. [0003] During the subsequent rolling or cutting process of the pole piece, it is easy to form a burr at the shearing point of the pole piece. The pole piece burr enters the lamination process without any treatment. The...

AI Technical Summary

Problems solved by technology

[0003] During the subsequent rolling or cutting process of the pole piece, it is easy to form a burr at the shearing point of the pole piece. The pole piece burr enters the lamination process without any treatment. The pole piece burr is too high and easy to pierce the diaphragm, resulting When the core is activated or used, a short circuit occurs, or even explodes

At the same time, waste batteries are produced, which wastes manpower and resources of lithium battery manufacturers and reduces production efficiency

[0004] At the same time, during the placement process of the pole piece, it is easy to produce various dusts-metal, non-metal, etc. If the battery is produced without removing it, it will affect the battery capacity, so that the capacity of the same type of battery is different, and the battery pack is charged and discharged. A lot of heat is generated during the process, which affects the life and safety of the battery pack

Moreover, larger metal particles may also pierce the diaphragm and cause a short circuit

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