Bipolar plate


Laser beam welding of steel foils

Metallic bipolar plates for fuel cells require several meters of gas-tight weld seams with highest quality and process requirements


 defect free weld seams at highest feed rates (v >> 1 m/s) for stainless steel foils (overlap-configuration, t < 150 µm)



adapted intensity distribution to overcome the most severe welding defect in foil welding at highest welding speeds: the humping effect 

Bildschirm­foto 2023-06-26 um 09.03.35