Patent ID: 6406809
Filing Date: 2002-06-18
Classification: H01M,Y02E

Abstract:
A fuel cell comprising:a fuel cell unit including an electrolyte interposed between an anode electrode and a cathode electrode, a separator for supporting said fuel cell unit interposed therebetween; and a fluid passage for allowing a fluid to flow in a superficial direction of said separator, the fluid containing at least any one of a cooling medium for cooling said fuel cell unit, a fuel gas for being supplied to said anode electrode, and an oxygen-containing gas for being supplied to said cathode electrode, wherein: said fluid passage includes a plurality of flow passage grooves which extend from a fluid inlet on a side of said fluid inlet on a surface of said separator and branch to increase the number of flow passage grooves extending along said surface of said separator, and said plurality of flow passage grooves are merged on a side of a fluid outlet thereby decreasing the number of said flow passage grooves, and the decreased number of said flow passage grooves extend along said surface before reaching said fluid outlet.