| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Processing and Performance of Materials Using Microwaves, Electric and Magnetic Fields, Ultrasound, Lasers, and Mechanical Work – Rustum Roy Symposium
|
| Presentation Title |
M-1: Laser Welding Process Technologies for Battery Manufacturing |
| Author(s) |
Heeshin Kang, Hyunjong Yoo, Soojin Choi, Jiwhan Noh, Philgong Choi, Ikgeun Jeon, Myungjin Kim |
| On-Site Speaker (Planned) |
Heeshin Kang |
| Abstract Scope |
Electric vehicles generally use lithium ion batteries with high energy density, and types include prismatic, pouch-type, and cylindrical batteries. These batteries are composed of hundreds or thousands of battery cells, and bus bars are used to electrically connect them. The stable quality of battery welding is important for the electric vehicle. In addition, in the case of dissimilar materials, in copper-aluminium welding, the two materials do not form an intermetallic compound due to low solubility with each other. In this study, core parts such as cylindrical batteries of electric vehicles are welded using a green laser. nickel-coated copper and aluminium materials used in battery bus bars and tabs were welded using a green laser through various process conditions 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. |