Patent ID: 8927164
Filing Date: 2015-01-06
Classification: H01M,Y02E

Abstract:
1. A fuel cell system having a fuel cell which is supplied with a fuel gas and an oxidant gas and which generates electrical power through an electrochemical reaction between the fuel gas and the oxidant gas, the fuel cell system comprising: an air supply flow path which supplies the oxidant gas to the fuel cell; a hydrogen supply flow path which supplies the hydrogen gas to the fuel cell; a power storage unit which is charged with electric power generated by the fuel cell; a scavenging processing execution device being programmed to execute scavenging processing for removing remaining water in the fuel cell by discharging remaining water in the air supply flow path using the electrical power stored in the power storage unit after power generation of the fuel cell is stopped; a judgment device which judges whether or not a condition of running out of gas occurs in the fuel cell system; a control unit which stops the power generation of the fuel cell when the judgment device determines that the condition of running out of gas occurs; and a compressor which supplies the oxidant gas from the air supply flow path to the fuel cell, wherein the scavenging processing execution device is programmed to limit the execution of the scavenging processing after the power generation of the fuel cell is stopped only when the judgment device determines that the condition of running out of gas occurs, and the scavenging processing execution device is further programmed to execute the scavenging processing by supplying the oxidant gas through the air supply flow path from the compressor to the fuel cell, while limiting the execution of the scavenging processing by reducing an amount of supply of the oxidant gas supplied through the air supply flow path from the compressor.