Pole piece edge burr cleaning nozzle and device with same

Abstract

The invention relates to a pole piece edge burr cleaning nozzle and a device with the same, and relates to the technical field of manufacturing of lithium battery equipment. The specific scheme is that the pole piece edge burr cleaning nozzle includes an upper plate, a lower plate, two gas pipes and a vacuum pipe, wherein the upper plate and the lower plate are both horizontally arranged, a gap isreserved between the upper plate and the lower plate, the two gas pipes are installed on the upper plate and the lower plate correspondingly, spraying heads of the two gas pipes are located on the lower surface of the upper plate and the upper surface of the lower plate and are opposite to each other, the two gas pipes are connected to an air pump, one end of the vacuum pipe is connected to the left or right end of the gap, and the other end of the vacuum pipe is connected to a vacuumizer. The pole piece edge burr cleaning nozzle and the device can effectively solve the problem of pole pieceedge burrs of a new process and can remove the edge burrs which cannot be removed by a traditional method; and the K value of a battery cell is reduced, the battery yield is improved, the cost of a single finished battery is reduced, and the battery safety is improved.

Description

technical field [0001] The invention relates to the technical field of lithium battery equipment manufacturing, in particular to a nozzle for cleaning the burr on the edge of a pole piece and a device containing the nozzle. Background technique [0002] At present, the new process of lithium battery needs to cut the pole pieces first, and then roll them. At this time, due to the different ductility of the slurry and the base material, burrs will appear on the edges of the pole pieces after rolling (see Figure 4 ), the traditional dust removal device includes brush clamping dust removal and air knife dust removal. The airflow blows away the dust on the surface of the pole piece. The burr on the edge of the pole piece cannot be removed, and the direction of the high-speed airflow blown out cannot be controlled. The distance between the edge of the pole piece and the airflow cannot be quantitatively controlled, resulting in the edge of the pole piece being broken. The diaphrag...

AI Technical Summary

Problems solved by technology

[0002] At present, the new process of lithium battery needs to cut the pole pieces first, and then roll them. At this time, due to the different ductility of the slurry and the base material, burrs will appear on the edges of the pole pieces after rolling (see Figure 4 ), the traditional dust removal device includes brush clamping dust removal and air knife dust removal. The airflow blows away the dust on the surface of the pole piece. The burr on the edge of the pole piece cannot be removed, and the direction of the high-speed airflow blown out cannot be controlled. The distance between the edge of the pole piece and the airflow cannot be quantitatively controlled, resulting in the edge of the pole piece being broken. The diaphragm will be pierced in the cell, and the falling burrs will also cause a short circuit inside the cell, resulting in dust and burrs inside the finished battery, poor K value, high battery scrap rate, and increased cost of a single finished battery

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