Patent ID: 6566002
Filing Date: 2003-05-20
Classification: H01M,Y02E

Abstract:
A polymer electrolyte fuel cell whereina polymer electrolyte membrane of a cell has an anode on one side and a cathode on the other side; a fuel chamber with fuel gas flowing inside is provided on the anode side of said cell; an oxidant chamber with oxidant gas flowing inside is provided on the cathode side of said cell; said cell, said fuel chamber, and said oxidant chamber constitute a component cell; a plurality of said component cells are stacked together to constitute a cell unit; a humidifying chamber with cooling water flowing inside is provided between said cell units adjacent to each other, thereby humidifying either fuel gas or oxidant gas, or both fuel gas and oxidant gas; and the flow of fuel gas moving inside said fuel chamber, as well as the flow of oxidant gas moving inside said oxidant chamber, is a co-flow with respect to the flow of cooling water moving inside said humidifying chamber.