Patent ID: 6258475
Filing Date: 2001-07-10
Classification: H01M,Y02E

Abstract:
A fastening structure in a fuel cell stack having a plurality of fuel cells each comprising an electrolyte and anode and cathode electrodes sandwiching the electrolyte, separators sandwiching each of the fuel cells, and end plates disposed on respective opposite ends of the plurality of fuel cells, comprising:a liquid chamber disposed on an outer surface of at least one of the end plates remote from an inner surface thereof which faces the fuel cells;a backup plate positioned next to said liquid chamber, said liquid chamber being sandwiched between said backup plate and said one of the end plates;a surface-pressure generating liquid filled in said liquid chamber;pressurizing means comprising a spring member disposed on an outer surface of the other end plate remote from an inner surface thereof which faces the fuel cells, for pressing said fuel cells toward said one of the end plates; andan attachment plate disposed adjacent to said pressurizing means.