Patent ID: 7964316

Claim:
A fuel cell system, comprising: a fuel cell body; a gas passage supplying reactive gas to the fuel cell body and discharging the reactive gas from the fuel cell body; an adjustment part configured to adjust a flowing condition of the reactive gas in the gas passage; at least two scavenging passages scavenging a part of the gas passage, wherein a first scavenging passage is formed to contain the fuel cell body and a second scavenging passage is formed to bypass the fuel cell body; and a control unit configured to control operation of the adjustment part to circulate the gas to either the first scavenging passage or the second scavenging passage, wherein the control unit is further configured to: start circulating the gas in the first scavenging passage to remove residual water in the first scavenging passage at a start of stopping of the fuel cell system; and stop circulating the gas in the first scavenging passage and start circulating the gas in the second scavenging passage to remove residual water in the second scavenging passage after the residual water in the first scavenging passage is removed.