A laser welding method and system

A technology of laser welding and laser welding head, which is applied in the direction of laser welding equipment, welding equipment, welding/welding/cutting items, etc. It can solve the problems of many pores and inconsistent welding seam height, so as to increase the condensation time and eliminate pores and cracks , solve the effect of more pores

Active Publication Date: 2022-03-08
深圳市大族锂电智能装备有限公司
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Problems solved by technology

[0004] In order to overcome the deficiencies of related products in the prior art, the present invention proposes a laser welding method and system, which solves the problem that there are many pores in the weld seam when the side plate and the end plate of the existing power battery are laser welded, and the end plate side and the side plate after welding Inconsistent height of side welds

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  • A laser welding method and system
  • A laser welding method and system
  • A laser welding method and system

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[0021] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments, and the preferred embodiments of the present invention are shown in the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein, on the contrary, these embodiments are provided for the purpose of making the disclosure of the present invention more thorough and comprehensive. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the prese...

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Abstract

The invention discloses a laser welding method and system, and relates to the technical field of laser welding. The laser welding method includes: closely fitting the end plate and the side plate of the power battery and then fixing them, and controlling the laser welding head to move to the side plate of the power battery. The welding seam formed by the close fit of the end plate and the side plate; adjusting the output parameters of the two laser beams in the laser welding head, and the two laser beams respectively perform laser welding on the welding seam according to the corresponding output parameters. It effectively solves the problem of many pores in the weld seam and the inconsistent height of the weld seam between the end plate side and the side plate side after welding when the existing power battery side plate and end plate are laser welded, and improves the consistency of welding seam welding.

Description

technical field [0001] The invention relates to the technical field of laser welding, in particular to a laser welding method and system. Background technique [0002] The fixed clamping structure of the power battery module includes side plates and end plates. The side plates are generally 1.2-3mm thick aluminum alloy plates, and the end plates are generally 15mm thick aluminum alloy profiles. With high reflectivity, in order to obtain sufficient penetration and connection strength, at present, high-power continuous lasers equipped with vibrating mirrors or ordinary welding heads are mostly used to weld the end and side plates of the module. [0003] When using a high-power continuous laser to weld a thicker aluminum alloy side plate, due to the strong laser penetration ability and high power density, the amount of molten metal is large, and the welding pool reacts violently. During welding, the molten pool in the weld seam is continuously stirred by convection. The metal ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/26B23K103/10
CPCB23K26/26B23K2103/10
Inventor 郑国强胡勇刘昊徐作斌王培为王锐雷鹏飞李博高云峰
Owner 深圳市大族锂电智能装备有限公司
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