The welding process of MG new energy vehicle battery casings requires strict welding precision and sealing. Haoqiong's high-precision galvanometer welding system connected to the laser welding and cutting integrated machine shines with welding speeds up to 3000mm/s. The closed-loop control system monitors the galvanometer position in real time to ensure welding accuracy. At the same time, the device supports various swing trajectories such as spiral lines, adapts to complex weld seams in battery cases, effectively prevents battery leakage, meets the battery safety requirements of MG new energy vehicles, and enhances product competitiveness.