Patent ID: 8313680
Filing Date: 2012-11-20
Classification: H01M,Y02E,Y02P

Abstract:
1. A method of producing a fuel cell formed by sandwiching a membrane electrode assembly between a pair of separators, the membrane electrode assembly including an anode, a cathode, and an electrolyte membrane interposed between the anode and the cathode, the separators each including a metal plate having a flow field for supplying a gas to the anode or the cathode; the method comprising the steps of: joining a flat surface of an elastically deformable resin film to only one surface of the metal plate by heat welding; inserting the metal plate having the resin film joined only to the one surface between upper and lower dies, and forming a rubber seal on at least a surface of the metal plate opposite the one surface, by injection molding, wherein an end of the resin film extends from a cavity for the rubber seal toward an outer or inner side of the lower die such that an upper die is received by the end of the resin film while the upper die presses the end of the resin film at the time of injection molding.