FUEL CELL SYSTEM AND CONTROL METHOD

摘要

A fuel cell system includes: a fuel cell stack; a fuel gas passage member in which the fuel cell stack is connected in a middle and a fuel gas supply source is connected to one end; a purge valve allowed to switch between an open state and a closed state; a detection part detecting a physical quantity relevant to at least one of the fuel gas supply source, the fuel gas passage member, and the fuel cell stack; a first purge part, at a given purge timing, controlling switchover between the open state and the closed state of the purge valve so as to perform first purge; a first determination part, determining whether second purge is to be performed after the first purge; and a second purge part, controlling switchover between the open state and the closed state of the purge valve so as to perform the second purge.

主权项

1. A fuel cell system comprising:
a fuel cell stack in which a plurality of membrane electrode assemblies each having an anode electrode and a cathode electrode to which fuel gas and oxidation gas are supplied respectively for electric power generation are stacked with a plurality of separators; a fuel gas passage member in which the fuel cell stack is connected in a middle and a fuel gas supply source containing a hydrogen absorbing alloy is connected to one end; a purge valve arranged in the fuel gas passage member on a side opposite to the fuel gas supply source with respect to the fuel cell stack and allowed to switch between an open state and a closed state; a detection part provided in at least one of the fuel gas passage member and the fuel cell stack and detecting a physical quantity relevant to at least one of the fuel gas supply source, the fuel gas passage member, and the fuel cell stack; a first purge part, at a given purge timing, controlling switchover between the open state and the closed state of the purge valve so as to perform first purge; a first determination part, on the basis of a first detection result detected by the detection part at the time of the first purge, determining whether second purge is to be performed after the first purge; and a second purge part, in accordance with determination by the first determination part that the second purge is to be performed, controlling switchover between the open state and the closed state of the purge valve so as to perform the second purge.