Method for manufacturing bipolar plate for fuel cell, involves welding sub plates with separator plate at connecting portions so as to form the channel structure

摘要

The method involves arranging a separator plate (9) between two sub plates (7,8). The sub plates are welded with separator plate at connecting portions (10,11) by laser welding or resistance welding process, so as to form a channel structure (4). The solder (13) is applied at connecting portions of sub-plates and separator plate in protective gas atmosphere.