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A kind of laser cutting system and its cutting method

A laser cutting and laser technology, applied in the direction of laser welding equipment, metal processing equipment, welding equipment, etc., can solve the problems of battery pole sheet curling, burrs, and uneven cutting surface, etc., to achieve improved cutting speed, large cutting range, cost saving effect

Active Publication Date: 2019-06-14
HANS LASER TECH IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a laser cutting system and its cutting method that solves the problem of curling of battery pole pieces, uneven cutting surface, and many burrs, and improves processing efficiency.

Method used

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  • A kind of laser cutting system and its cutting method
  • A kind of laser cutting system and its cutting method
  • A kind of laser cutting system and its cutting method

Examples

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Embodiment Construction

[0028] figure 1 and figure 2 Shown is a schematic structural diagram of the laser cutting system of the present invention, and the laser cutting system is used for laser cutting the workpiece 2 .

[0029] In this embodiment, the workpiece 2 is a battery pole piece, and there are three situations for the battery pole piece: both sides of the battery pole piece have a coating layer, one side of the battery pole piece has a coating layer, and only the battery pole piece has no coating layer . The cutting process and cutting parameters will be different in each case.

[0030] like figure 2 As shown, the workpiece 2 includes a bare area 21 and a coating layer 22 connected to the bare area 21 .

[0031] The bare area 21 is the tab part of the battery pole piece, which is the copper foil or aluminum foil directly exposed; the coating layer 22 is figure 2 The shaded area shown.

[0032] The laser cutting system includes: galvanometer system 1, variable reflector 3, fixed refl...

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Abstract

The invention provides a laser cutting system and a laser cutting method thereof. The laser cutting system comprises a galvanometer system, a variable reflector, a fixed reflector, a first laser, a second laser and a control system. The control system is connected with the first laser, the second laser and the variable reflector. The cutting mode is the front focusing cutting mode. According to a rear focusing cutting mode adopted by existing pole piece cutting, the focusing spot of front focusing is smaller than that of rear focusing, the laser power density at the focusing spot is larger, cutting speed can be increased, through matching with a three-axis galvanometer, the cutting range is large, large-breadth cutting and small-breadth batch cutting can be conducted, cutting efficiency is improved, and cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of laser processing, and in particular relates to a laser cutting system and a cutting method thereof. Background technique [0002] With the diversification of consumer market demand, the new energy industry is getting tighter. Lithium batteries are widely used in industries such as automobiles, mobile communication equipment, and portable electronic equipment because of their advantages such as high energy, high density, high output power, long cycle life, and no environmental pollution. In the production process of lithium batteries, battery pole piece cutting is an extremely important process. Only after the rolled battery pole piece is cut, can it be wound with a separator to form a battery cell. [0003] At present, the lithium-ion battery pole piece widely used in the industrial market has an aluminum foil as its positive pole and a copper foil as its negative pole. The thickness of the aluminum foi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/38B23K26/064
CPCB23K26/0643B23K26/38
Inventor 刘丰范醉风辜秉伟陈春辉叶天茂吴烈陈克胜高云峰
Owner HANS LASER TECH IND GRP CO LTD
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