Patent ID: 7892686
Filing Date: 2011-02-22
Classification: G05D,H01M,Y02E

Abstract:
1. A fuel cell system comprising: a fuel cell having a reaction gas flow passage where a reaction gas communicates, generating power by the reaction gas being supplied to the reaction gas flow passage, having a refrigerant flow passage where a refrigerant communicates, and cooled by the refrigerant being supplied to the refrigerant flow passage; a reaction gas supply device configured to supply the reaction gas to the reaction gas flow passage; a refrigerant supply device configured to supply the refrigerant to the refrigerant flow passage, wherein the refrigerant in a cooling loop is always in a liquid state during operation of the fuel cell, wherein the cooling loop is directly connected to an upstream side and a downstream side of the fuel cell; a refrigerant supply restriction device configured to restrict a refrigerant supply amount to the refrigerant flow passage; a controller configured to control the refrigerant supply restriction device; and a motor operatively coupled to the reaction gas supply device and the refrigerant supply device for always substantially simultaneously driving the reaction gas supply device and the refrigerant supply device during the operation of the fuel cell, wherein when warming up the fuel cell, the controller controls the refrigerant supply restriction device and reduces the refrigerant supply amount to the refrigerant flow passage.