Cooling of a fuel cell system

摘要

A fuel cell system comprises a fuel cell stack 10 including stacked power-generating cells 14, a cooling medium-circulating passage 58 for supplying a cooling medium to the fuel cell stack 10 in a circulating manner to cool the power-generating cells 14, and a heat exchange means 60 arranged for the cooling medium-circulating passage 58, for performing a heat exchange treatment for the cooling medium used to cool the power-generating cells 14, wherein the operation temperature of the fuel cell stack 10 is set to be within a range of 100 DEG C to 210 DEG C. Accordingly, it is possible to improve durability of the fuel cell system in the high output operation and to easily miniaturize the fuel cell system.