In-depth evaluation of laser welding of thick busbar to 21700 Li-ion cell terminal for electric supercar vehicle battery pack

• Published in: Journal of materials research and technology Vol. 33; pp. 3058 - 3067
• Main Authors: Kumar, Nikhil, Pamarthi, Venkat Vivek, Moffat, John, Masters, Iain
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.11.2024; Elsevier
• Subjects: Electric vehicle (EV); Intermetallic compound formation; Laser welding; Li-ion battery; Weld resistance; Electric vehicle (EV); Weld resistance; Laser welding; Li-ion battery; Intermetallic compound formation

High-performance supercars using Li-ion batteries necessitate thicker aluminium busbars with thin steel joints. However, joining these materials often leads to overheating resulting in brittle intermetallic compounds (IMCs), reduced weld quality, and higher electrical resistance. This study evaluate...