FUEL CELL SYSTEM

• Main Authors: NAKAMURA KEN, KAKIMI YOSUKE, AKEMOTO HITOSHI, TOMIMOTO HISAYA, TACHIKAWA KATSUYUKI
• Format: Patent
• Language: English; Japanese
• Published: 25.04.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To suppress intake of off-gas from an intake port.SOLUTION: A fuel cell system 10 includes a fuel cell stack 21, an intake port 31 for intake of gas, an exhaust port 39 that discharges off-gas, and a cooling mechanism 70. The cooling mechanism 70 includes a radiator 72 that exchanges heat between a refrigerant and the gas, a radiator fan 73 that generates air flowing in the flow direction, a refrigerant flow path 71 that circulates the refrigerant in the fuel cell stack 21, and a thermostat 75. The refrigerant flow path 71 includes a first flow path 71c through which the refrigerant flows via the radiator 72, and a second channel 71d through which the refrigerant flows without passing through the radiator 72. The thermostat 75 switches the flow path through which the refrigerant flows between the first flow path 71c and the second flow path 71d. The intake port 31 is arranged upstream of the exhaust port 39 in the flow direction. The fuel cell system 10 causes the radiator fan 73 to continue generating air flow while the fuel cell stack 21 is generating electricity.SELECTED DRAWING: Figure 2 【課題】吸気口からのオフガスの吸入を抑制する。【解決手段】燃料電池システム１０は、燃料電池スタック２１と、気体を吸入する吸気口３１と、オフガスを排出させる排気口３９と、冷却機構７０と、を備える。冷却機構７０は、冷媒を気体と熱交換させるラジエータ７２と、流れ方向に流れる送風を発生させるラジエータファン７３と、燃料電池スタック２１に冷媒を循環させる冷媒流路７１と、サーモスタット７５と、を有する。冷媒流路７１は、ラジエータ７２を経由して冷媒が流れる第１流路７１ｃと、ラジエータ７２を経由せずに冷媒が流れる第２流路７１ｄと、を含む。サーモスタット７５は、冷媒が流れる流路を第１流路７１ｃと第２流路７１ｄとで切り替える。吸気口３１は、流れ方向において、排気口３９よりも上流に配置される。燃料電池システム１０は、燃料電池スタック２１による発電の実行中、ラジエータファン７３による送風の発生を継続させる。【選択図】図２