Patent ID: 6833210
Filing Date: 2004-12-21
Classification: H01M,Y02E

Abstract:
A fuel cell comprising fuel cell units, the fuel cell units being stacked and having at least one cooling medium flow passage therebetween, and the cooling medium flow passage sealed by a cooling surface sealing member, each fuel cell unit comprising:an electrode assembly formed by disposing an electrode on each side of an electrolyte; separators that sandwich the electrode assembly in the thickness direction thereof; and gas sealing members that are disposed at an outer peripheral portion of the electrode assembly, and that seal respective reaction gas flow passages that are formed between each separator and the electrode assembly and are bounded by the separators and electrode assembly, wherein in each of the separators there are provided reaction gas communication ports, and cooling medium communication ports that penetrate each of the separators in the thickness direction thereof, and communication paths that detour around the gas sealing members in the thickness direction of the separators and connect the reaction gas communication ports with the reaction gas flow passages; and wherein the portions of the separators, at which the gas sealing members and the cooling surface sealing member are disposed so as to be offset with respect to each other as viewed in the stacking direction, are supported by support members.