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Welding method and device of copper and copper alloy material

A welding method and copper alloy technology, applied in welding equipment, laser welding equipment, welding/welding/cutting items, etc., can solve the problems of slow welding speed, many pores, and poor weld shape, so as to increase the depth of molten pool, The effect of expanding the volume of molten pool and preventing pores

Active Publication Date: 2019-06-25
WUHAN RAYCUS FIBER LASER TECHNOLOGY CO LTD
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Problems solved by technology

[0005] The embodiment of the present invention provides a welding method and device for copper and copper alloy materials, which are used to solve the problems of poor weld formation, many pores, slow welding speed and high requirements on the upper limit of laser power in welding in the prior art

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  • Welding method and device of copper and copper alloy material
  • Welding method and device of copper and copper alloy material
  • Welding method and device of copper and copper alloy material

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Embodiment Construction

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, 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. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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 present invention.

[0021] figure 1 A flowchart of a welding method for copper and copper alloy materials provided by an embodiment of the present invention, such as figure 1 As shown, the method includes:

[0022] S1, output the main-band laser through the main-band laser;

[0023] S2, outputting the sub-band laser through the sub-band laser;

[0024] S3, output...

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Abstract

The embodiment of the invention provides a welding method and device of copper and a copper alloy material. The method comprises the steps that through a main waveband laser device, main waveband laser is output; through a second waveband laser device, second waveband laser is output; through a laser adapter, composite laser is output, the composite laser carries out welding on the area to be welded, the composite laser comprises the main waveband laser and the second waveband laser which are coaxial, and the absorbing rate of the area to be welded for the main waveband laser is larger than the absorbing rate of the area to be welded for the second waveband laser. The energy use rate of the laser beam is improved, under the same laser power level, the higher-speed welding can be achieved,due to the high-speed welding, condensing forming of copper and copper alloy can be facilitated, the composite welding method is used for achieving high-speed stable welding of the copper and the copper alloy, and welding line forming and welding line quality can be ensured.

Description

technical field [0001] The invention relates to the technical field of laser welding, in particular to a welding method and device for copper and copper alloy materials. Background technique [0002] Automotive power battery refers to the battery used in electric vehicles, which has a large storage capacity and output power, and can be used as a driving power source for electric vehicles. At present, the commonly used automotive power batteries on the market are lithium batteries (battery packs), and there are many manufacturing processes, among which laser welding is required: explosion-proof valve sealing welding, tab welding, soft connection welding, safety helmet welding, casing Sealing welding, module welding, PACK package welding, electrode pole welding, bus bar welding, etc., the materials are mainly pure copper, aluminum and aluminum alloy, stainless steel, etc. [0003] Copper and copper alloys have excellent electrical conductivity, so it is inevitable to use copp...

Claims

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Application Information

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IPC IPC(8): B23K26/26B23K26/067B23K26/60B23K26/064B23K26/142B23K103/12
Inventor 吴泽锋汪伟高辉周晚君
Owner WUHAN RAYCUS FIBER LASER TECHNOLOGY CO LTD
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