GASKET FOR REDUCTION OF STRESS CONCENTRATION OF FUEL CELL STACK

摘要

A gasket for reducing stress concentration of a fuel cell stack is provided to prevent the damage and deformation of a separator by reducing stress concentrated at the specific position. A gasket(40) for reducing stress concentration of a fuel cell stack maintains air tightness by being inserted between a membrane-electrode assembly(1) and a separator(2) or between separators. The gasket has a joint of a T type or + type structure to form hydrogen, air and cooling water manifold, or has a structure of meeting branches of which an angle of both directions is 180 degree, at one point with constant angle to reduce the stress concentration of a gasket generated with the deformation of the gasket according to the compressive force.