Lug laser cutting device, workbench assembly and lug laser cutting method

Abstract

The invention discloses a lug laser cutting device, a workbench assembly and a lug laser cutting method. The workbench assembly comprises an upper air channel plate and a lower air channel plate. Theupper air channel plate is arranged above the lower air channel plate. An interval space allowing the lug to pass is reserved between the upper air channel plate and the lower air channel plate. The bottom face of the upper air channel plate and the top face of the lower air channel plate are each provided with multiple air holes. The upper air channel plate and the lower air channel plate blow air into the interval space through the multiple air holes so as to remove dust. When the workbench assembly cuts the lug, the upper air channel plate and the lower air channel plate blow air to the interval space so as to remove dust, the stability of a conveyed pole plate in the interval space can be improved at the same time, shake of the pole plate in the cutting process is restrained, and therefore an out-of-focus laser and other phenomena can be avoided.

Description

Technical field [0001] The invention relates to the field of lithium ion battery production equipment, and in particular to a laser electrode cutting device, a worktable assembly and a laser cutting method for the electrode ear. Background technique [0002] In the laser cutting process of lithium ion battery tabs, the traditional laser cutting process is to transport the pole pieces through the transmission of rollers. In the laser cutting area, there is a cutting base plate to support the pole pieces and correspond to the cutting track. The groove ensures that the pole piece at the cutting position is in a suspended state; the spatter, dust, and current collector slag generated during the cutting process are discharged downward through the groove, and then sucked away by the dust collector. However, due to the soft nature of the pole piece material, traditional dust removal and laser cutting will produce corresponding contradictory interference. The traditional vacuum device i...

AI Technical Summary

Problems solved by technology

However, due to the softness of the pole piece material, traditional dust removal and laser cutting will produce corresponding contradictions and interference

The traditional vacuum device is basically located above or below the pole piece. In order to prevent the vacuum device from deforming the pole piece, there will be a large gap between the dust collection device and the pole piece, and the suction force should not be too large; The bottom plate dust removal can not be opened too much, the suction is too large, the pole piece will be adsorbed on the cutting bottom plate, and the pole piece cannot continue to be transported, and the suction force will not make the dust removal effect reach the ideal state.

After laser cutting, the spatter, dust and current collector slag generated by cutting will fall on the pole piece, and because laser cutting is a very high temperature cutting, these spatter, dust and current collector slag will be melted on the pole piece. On the pole piece, it is very difficult to remove. In the subsequent winding or lamination process, it is very likely to pierce the separator and cause the battery to short circuit or explode, which greatly reduces the yield and safety of the product.

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