Patent ID: 7951481
Filing Date: 2011-05-31
Classification: H01M,Y02E

Abstract:
1. A cell for a solid polymer electrolyte fuel cell, comprising: a membrane/electrode assembly including a fuel electrode and an oxidant electrode disposed on either side of a solid polymer electrolyte membrane; a first separator superposed against a surface of the oxidant electrode that defines an oxidant gas flow passage; and a second separator superposed against a surface of the fuel electrode that defines a fuel gas flow passage, wherein the first separator and the second separator, each has a primary face, a secondary face, and outer peripheral edges, with the outer peripheral edges having outermost peripheral edges, the first separator and the second separator being composed of rectangular thin metal plates of a same or nearly the same shape, with the outermost peripheral edges of the first separator and the second separator each bending inclined towards the secondary face thereof on an opposite side of the primary face; the primary face of the second separator is superposed against the membrane/electrode assembly and the primary face of the first separator being superposed against the membrane/electrode assembly to define a reinforcing rib by means of the outer peripheral edges thereof; and the first separator and the second separator each further comprise in a thickness direction perforations having six inlet/outlet holes including a fuel gas inlet hole, a fuel gas outlet hole, an oxidant gas inlet hole, an oxidant gas outlet hole, a coolant inlet hole and a coolant outlet hole, the six inlet/outlet holes being disposed to overlap each other when the first separator and the second separator define the reinforcing rib, each corresponding inlet/outlet hole being the same shape.