Patent ID: 8663860
Filing Date: 2014-03-04
Classification: H01M,Y02E

Abstract:
1. A process for dealing with failure of a fuel cell system, the fuel cell system comprising: a fuel cell having an anode and a cathode, the anode being supplied with fuel gas, the cathode being supplied with oxidant gas, the fuel cell for producing electricity through reaction between the fuel gas and the oxidant gas; a fuel gas supply path through which the fuel gas passes; an oxidant gas supply path through which the oxidant gas passes; a coupling path for linking the fuel gas supply path to the oxidant gas supply path; an open/close valve being installed on the coupling path; an electric control unit being electrically connected to the open/close valve and sending the open/close valve a signal, in response to which the open/close valve is opened/closed, wherein the electric control unit closes the open/close valve while a fuel cell stack is generating electricity if the electric control unit determines that the open/close valve does not fail, and wherein the electric control unit opens the open/close valve during a scavenging process of the fuel cell stack if the electric control unit determines that the open/close valve does not fail; a voltage sensing device for detecting voltage produced by the fuel cell during power generation, wherein the voltage is supplied to an external load operatively connected to the fuel cell; and a decision device for determining whether or not an abnormal condition occurs in the fuel cell system, based on voltage information sent from the voltage sensing device, wherein