Patent ID: 8753782
Filing Date: 2014-06-17
Classification: B60H,H01M,Y02E

Abstract:
1. A cooling system of a fuel cell which generates electricity by an electrochemical reaction produced by supplying a fuel gas to an anode side and an oxidizing gas to a cathode side, comprising: a cooling flow passage through which coolant circulates between a fuel cell stack and a first heat exchanger; a second heat exchanger which is provided in parallel with the fuel cell stack or the first heat exchanger and uses coolant that has been diverted from the cooling flow passage, wherein the second heat exchanger serves as a cooling apparatus of a gas compressor for supplying oxidizing gas, wherein the fuel cell is a vehicular fuel cell mounted in a vehicle, an air conditioning heat exchanger for air conditioning a vehicle cabin is provided in parallel with the fuel cell stack, and coolant that has been diverted from the cooling flow passage is used in the air conditioning heat exchanger; a first coolant circulation pump arranged in series in the cooling flow passage; an air conditioning bypass flow passage which is a bypass flow passage through which coolant that has been diverted from the cooling flow passage flows and in which the air conditioning heat exchanger, a heater, and a second coolant circulation pump are arranged; a circulation flow passage arranged in parallel with the air conditioning bypass flow passage; and air conditioning bypass switching means for switching between a first connection state in which the air conditioning bypass flow passage is connected with the cooling flow passage, and a second connection state in which the air conditioning bypass flow passage is connected with the circulation flow passage and the air conditioning bypass flow passage is disconnected from the fuel cell.