Patent ID: 6572994
Filing Date: 2003-06-03
Classification: B60L,H01M,Y02E,Y02T

Abstract:
A polymer electrolyte fuel cell system comprisinga polymer electrolyte fuel cell stack; a fuel tank for storing a fuel having a freezing point of 0Â° C. or less; a fuel reformer for reforming the fuel fed from the fuel tank with water vapor by supplying the fuel and the water vapor to the fuel reformer, the fuel reformed being supplied to the fuel cell stack; total enthalpy heat exchanging means for exchanging heat and moisture between a reacted gas fed from a reaction section of the fuel cell stack and an unreacted gas to be fed to the reaction section of the fuel cell stack; a separator/mixer having a container and a partition board provided in the container so as to form a separator portion and a mixer portion, wherein the separator portion has a gas inlet and a gas outlet, a gas inlet supplies the reacted gas fed from the total enthalpy heat exchanging means to the inside of the container, the container separates condensed water in accordance with the moisture from the reacted gas and the condensed water is stored in the container, the gas outlet exhausts the reacted gas separated from the moisture in the container to the outside of the container, and the mixer portion for mixing the condensed water with the fuel fed from the fuel tank; solution mixture supply means for supplying part of the solution mixture prepared by the mixer portion to the fuel reformer.