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VIDEO DOI: https://doi.org/10.48448/xckx-me48

technical paper

ICALEO 2023

October 18, 2023

Chicago, United States

Latest Application Developments Across EV-Industries with Overlaying Highly Brilliant Laser Beams of the Next Generation

keywords:

aluminum

e-mobility

welding

battery

copper

The demands of the EV industry on the manufacturing processes are increasing rapidly in terms of productivity, strength, and electrical performance. Common laser tools are already reaching their performance limits in demanding fields of application, such as joining of copper and aluminum, or high-speed welding of thin metal foils. Innovative laser beam sources with new degrees of freedom in laser material processing are therefore needed to meet the increasing requirements. In this article, we examine selected laser applications in the EV industry, particularly in the areas of battery, e-motor and fuel cell production. In the case of electrical contacts, in addition to the requirements of high strength and low electrical resistance, there is also the difficulty that the welding depth may only be within a very narrow tolerance band, otherwise the parts would be destroyed if the component was shot through. In addition to the precise welding depth, the heat input is also a major factor in determining whether the component remains intact during the joining process. In this contribution results of fundamental process investigations when using two superimposed laser beams of high brilliance of the latest generation are presented. It is shown that both productivity and process stability can benefit from this new type of laser tool.

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Fundamental Study on High-Quality Welding of Copper and Aluminum by Angled and Superposed Irradiation of Blue and Near-Infrared Lasers

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Yuki Yamada and 6 other authors

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