FUEL CELL SYSTEM

• Main Authors: YOSHIOKA RYO, KOYAMA TAKASHI, SANTO TAKAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 13.06.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a fuel cell system which can inhibit heat deterioration of a seal member disposed at an interior of a pump even if a temperature of a fuel cell becomes high.SOLUTION: A fuel cell system 100 includes: a fuel cell 1; a radiator 4 which cools the fuel cell 1 with a coolant; a gas-liquid separator 10 which recovers moisture generated by the fuel cell 1; a first pump 20 which transfers water stored in a storage part 11 of the gas-liquid separator 10 to a storage tank 13; a second pump 40 which transfers the water in the storage tank 13; a scattering passage 42 for scattering the water transferred by the second pump 40 to the radiator 4; a reflow passage 45 which flows back the water transferred by the second pump 40 to the storage part 11; a flow adjustment valve 41 which adjusts a rate Qd of scattering flow flowing to a scattering passage 42 side and a flow rate Qr of reflow flowing to a reflow passage 45 side; and a control device 50. When reflow conditions are met, the flow adjustment valve 41 is controlled so that the reflow flow rate Qr becomes larger than the scattering flow rate Qd.SELECTED DRAWING: Figure 1 【課題】燃料電池の温度が高温になった場合においても、ポンプの内部に配置されたシール部材の熱劣化を抑制可能な燃料電池システムを提供する。【解決手段】燃料電池システム１００は、燃料電池１と、冷却水により燃料電池１を冷却するラジエータ４と、燃料電池１で発生した水分を回収する気液分離器１０と、気液分離器１０の貯留部１１に貯留された水を貯留タンク１３に移送する第１ポンプ２０と、貯留タンク１３内部の水を移送する第２ポンプ４０と、第２ポンプ４０にて移送された水をラジエータ４に散布する為の散布用流路４２と、第２ポンプ４０にて移送された水を貯留部１１に還流させる還流流路４５と、散布用流路４２側へ流れる散布流量Ｑｄと還流流路４５側へ流れる還流流量Ｑｒを調整する流量調整弁４１と、制御装置５０を有している。還流条件を満たした場合、還流流量Ｑｒが散布流量Ｑｄよりも大きくなるように、流量調整弁４１が制御される。【選択図】図１