技術摘要（英）
Laser welding technology aims to develop a blue laser integrated with Volume Bragg Grating (VBG) technology, combined with optimized process and path design, to achieve high energy density beams that significantly enhance welding efficiency, particularly for highly reflective copper materials. With the growing emphasis on energy conservation and carbon reduction, the electric vehicle industry is experiencing rapid growth. Consequently, electric motors and battery modules are increasingly in demand, both of which extensively rely on copper to ensure superior magnetic permeability and electrical