Laser cutting optical system and cutting method thereof

According to the laser cutting optical system and the cutting method thereof, double optical paths of the grooving optical system and the splitting optical system are achieved by sharing the optical galvanometer, grooving and splitting are carried out on the same station, a battery piece does not need to move through a guide rail, and the optical system does not need to move through the guide rail; the optical system improves the cutting speed and eliminates mechanical motion errors, and is characterized by comprising a grooving optical system and a splitting optical system, each of the grooving optical system and the splitting optical system comprises a laser, a beam expander, a reflector and an optical galvanometer; and the optical galvanometer in the slotting optical system and the optical galvanometer in the splitting optical system are the same. 本发明提供了一种激光切割光学系统及其切割方法，其通过共用光学振镜，实现开槽光学系统和裂片光学系统的双光路，使得开槽和裂片在同一工位进行，无需电池片通过导轨移动和光学系统通过导轨移动，提高了切割速度、消除了机械运动误差，其特征在于：所述光学系统包括开槽光学系统和裂片光学系统；所述开槽光学系统和裂片光学系统均包括激光器、扩束