|About this Abstract
||MS&T23: Materials Science & Technology
||Processing and Performance of Materials Using Microwaves, Electric and Magnetic Fields, Ultrasound, Lasers, and Mechanical Work – Rustum Roy Symposium
||N-7: Research on Green Laser Welding Process and Monitoring Technologies for Manufacturing Parts of Electric Vehicles
||Heeshin Kang, Hyunjong Yoo, Jiwhan Noh, Jiyeon Choi, Soojin Choi, Junsu Park, Myungjin Kim, Jongsik Kim, Eunjoon Chun
|On-Site Speaker (Planned)
The stable quality of battery welding is important for the electric vehicle. In addition, in the case of dissimilar materials, in copper-steel welding, the two materials do not form an intermetallic compound due to low solubility with each other. In general, the upper part of the battery can and the bus bar use copper (Cu) material, which is a material with good conductivity, but the upper material of the battery uses aluminum in terms of weight reduction and sometimes uses steel in terms of mechanical strength and corrosion resistance. In this study, nickel-coated copper and mild steel materials used in battery tabs and bus bars were welded using a green laser through various process conditions and scan patterns in order to have more stable welding quality. Optimal process parameters that minimize spatter, internal defects, and internal segregation of welds were suggested through excellent mechanical properties and surface and cross-section analysis.