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Nanosecond pulsed fiber laser as a tool for laser micro welding

: Haddad, Elie; Helm, Johanna; Olowinsky, Alexander; Gillner, Arnold

Volltext ()

Procedia CIRP 94 (2020), S.571-576
ISSN: 2212-8271
Conference on Photonic Technologies (LANE) <11, 2020, Online>
Zeitschriftenaufsatz, Konferenzbeitrag, Elektronische Publikation
Fraunhofer ILT ()
electromobility; joining technique; laser micro welding; battery cells; nanosecond pulsed fiber laser; dissimilar materials

Laser micro welding is - due to its local and limited thermal input into the parts - a well suited joining technique for the contacting of battery cells, modules and packs for electrical vehicles. The most common laser micro welding processes employ a fiber laser emitting in the infrared range in continuous wave mode. Recently however, it was shown that a nanosecond pulsed fiber laser, usually used for ablation applications, can be used for joining as well. The aim of this paper is to examine welding dissimilar materials with a nanosecond pulsed fiber laser.