Patent ID: 7651809
Filing Date: 2010-01-26
Classification: H01M,Y02E

Abstract:
1. A fuel cell including a plurality of electrolyte electrode assemblies and separators sandwiching said electrolyte electrode assemblies, said electrolyte electrode assemblies each including an anode, a cathode, and an electrolyte interposed between said anode and said cathode, said separators each comprising a single plate, wherein a plurality of first protrusions are provided on one surface of each of said separators such that a plurality of fuel gas flow fields for supplying a fuel gas to said anode are formed between said first protrusions and said anode by facing said first protrusions to said anode; a plurality of second protrusions are provided on the other surface of each of said separators such that a plurality of oxygen-containing gas flow fields for supplying an oxygen-containing gas to said cathode are formed between said second protrusions and said cathode; a channel member provided on each of said separators, said channel member forming a plurality of fuel gas supply channels connecting a fuel gas supply unit and each of said fuel gas flow fields, wherein a rigidity of said channel member is smaller than rigidities of said first and second protrusions so that said channel member is elastically deformable when a load is applied to said channel member in a stacking direction of said electrolyte electrode assemblies ands aid separator; and the separator includes a small diameter portion and a plurality of bridges extending radially from the small diameter portion, each bridge including one of the fuel gas supply channels, each of the fuel gas supply channels extending from the small diameter portion to one of the plurality of fuel gas flow fields, each of the plurality of fuel gas flow fields provided on one of a plurality of large diameter portions of the separator.