Laser welding method, device, metal bipolar plate, hydrogen fuel cell, and vehicle

Abstract

A laser welding method, a device, a metal bipolar plate, a hydrogen fuel cell, and a vehicle are disclosed. The laser welding method is used for a metal bipolar plate of a hydrogen fuel cell, the metal bipolar plate being preset with a weld path, the weld path including a weld starting point and a weld end point. The laser welding method including (S1) applying and moving a laser beam along the weld path from the weld starting point, (S2) judging whether the movement distance of the laser beam reaches a movement distance threshold, and if yes, performing step S3, and (S3) reducing the movement speed of the laser beam and simultaneously reducing or maintaining the laser power of the laser beam.

Dependencies are inferred from the claim text.