Laser contacting of hairpin windings in electrical vehicle motors using ring-mode laser beams based on angularly-uniform Lissajous trajectories
Tieshuang Zhu,
Shuai Ji,
Chengrui Zhang
et al.
Abstract:The contacting process of hairpin windings is deemed the most important and challenging process in manufacturing electric vehicle motors. This paper proposes a ring-mode laser contacting method for copper hairpin windings based on Lissajous-shaped cyclic scanning with a uniform angular speed. Two key variables, trajectory cycle n and angular multiplier k, which represent the laser energy input and distribution respectively, were investigated via single-factor experiments. Morphology, microstructure, mechanical… Show more
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