Laser cutting device of power battery pole piece

A technology of laser cutting and battery pole pieces, which is applied in the direction of electrode manufacturing, laser welding equipment, manufacturing tools, etc., can solve the problems of many burrs on the pole piece, edge cutting powder falling off, poor precision, etc., to achieve improved performance, high precision, cutting smooth edge effect

Active Publication Date: 2010-07-14
CHERY AUTOMOBILE CO LTD
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AI Technical Summary

Problems solved by technology

At present, the cutting equipment for power battery pole pieces used by some domestic battery manufacturers and pilot lines of electric vehicle manufacturers is mostly punching and rolling cutting equipment. When using punching and rolling cutting equipment to cut battery pole pieces, cutting There are many burrs on the pole pieces (especially the negative pole piece), poor precision, and serious powder drop off the edge, which seriously affects the application of power battery pole pieces.
In addition, the dies in these two cutting devices need to be replaced frequently, which is not conducive to large-scale connection production, and also increases the maintenance cost in the later period
These shortcomings limit the production and application of automotive power batteries, and a new cutting equipment is needed to replace it

Method used

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  • Laser cutting device of power battery pole piece
  • Laser cutting device of power battery pole piece
  • Laser cutting device of power battery pole piece

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with accompanying drawing:

[0013] Such as figure 1 , figure 2 , Figure 4 As shown, a power battery pole piece laser cutting device includes a workbench 10, on which a discharge mechanism 30 for placing the battery pole piece 20, a transmission mechanism 50 for transporting the battery pole piece 20, and a support for the battery are arranged in sequence. A cutting mechanism 60 for cutting the pole piece 20, the cutting head of the cutting mechanism 60 is a fiber laser cutting head 61, a tensioning mechanism 40 is provided between the discharge mechanism 30 and the transmission mechanism 50, and the battery pole piece 20 It is sent to the cutting mechanism 60 by the discharging mechanism 30 through the tensioning mechanism 40 and the conveying mechanism 50 .

[0014] As a preferred solution of the present invention, a fiber laser is used as the light source. After the laser output laser is collim...

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Abstract

The invention relates to a laser cutting device, in particular to an optical fiber laser cutting device for a vehicle power battery pole piece, which comprises a worktable. The worktable is sequentially provided with a discharging mechanism, a conveying mechanism and a cutting mechanism, wherein a battery pole piece is arranged on the discharging mechanism, conveyed by the conveying mechanism and cut by the cutting mechanism, and a cutting head of the cutting mechanism is an optical fiber laser cutting head. By the technical scheme, the invention cuts the battery pole piece by adopting optical fiber laser, finely cuts the battery pole piece by utilizing the properties of laser, i.e. the beam quality approaching a diffraction limit, the conversion efficiency with high energy and the high stability, cuts a pole piece with narrow cutting gap, smooth cutting edge and high accuracy, favorably improves the performance of the battery pole piece and overcomes the defects of a traditional cutting method.

Description

technical field [0001] The invention relates to a laser cutting device, in particular to an optical fiber laser cutting device used for pole pieces of automobile power batteries. Background technique [0002] The cutting method of the traditional power battery pole piece is to uniformly coat the positive and negative electrode materials on both sides of copper foil (negative electrode) and aluminum foil (positive electrode), respectively, and then cut the pole piece into a specific shape by cutting equipment. At present, the cutting equipment for power battery pole pieces used in the pilot test lines of some domestic battery manufacturers and electric vehicle manufacturers are mostly punching and rolling cutting equipment. When using punching and rolling cutting equipment to cut battery pole pieces, cutting There are many burrs on the pole pieces (especially the negative pole piece), poor precision, and severe powder drop off at the trimming edge, which seriously affects the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/04B23K26/38B23K26/42B23K26/70
CPCY02E60/12Y02E60/10
Inventor 郭言东
Owner CHERY AUTOMOBILE CO LTD
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