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The laser technology is key to the development of the e-mobility. We demonstrate how an optimal laser beam shaping enables high speed and high quality copper welding for the battery cells manufacturing.
The beam shaping parameters are explored and optimized and the optical performance is assessed. The process window is described for four sets of shape parameters as well as the comparison with an unshaped beam. The quality in each cases for different speed and average power is discussed. An optimal process at 6m/min and 8kW is obtained. At last, different welding configuration, such as transparent welding, are described.
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Avinash Kumar, Matthieu Meunier, Nicolas Gaillard, David Lemaitre, Gwenn Pallier, Guillaume Labroille, "An optimal tailored beam-shape to improve copper welding with a 1µm 8kW laser," Proc. SPIE PC12414, High-Power Laser Materials Processing: Applications, Diagnostics, and Systems XII, PC1241409 (17 March 2023); https://doi.org/10.1117/12.2655462