Abstract:
PROBLEM TO BE SOLVED: To provide a technique with which the amount of reactant gas supply to a fuel cell can be appropriately controlled.SOLUTION: A fuel cell system 100 comprises an air flow meter 33 which measures the amount of cathode gas supply and a hydrogen circulation pump 64 for circulating anode exhaust gas to re-supply the anode exhaust gas to a fuel cell 10. A control unit 20 orders the fuel cell 10 to carry out a predetermined reference operation and measures power consumption of the hydrogen circulation pump 64, and, based on a correlation between power consumption of the hydrogen circulation pump 64 and the amount of cathode gas supply, obtains the amount of cathode gas supply with respect to a measured value of the power consumption of the hydrogen circulation pump 64. The control unit 20 then calculates, as a measurement error, a difference between the amount of cathode gas supply and a value measured by the air flow meter 33 and calculates a correction value for compensating for the measurement error. The control unit 20 controls the amount of cathode gas supply based on the measured value from the air flow meter 33 which has been corrected using the correction value.
Abstract:
PROBLEM TO BE SOLVED: To prevent a fuel cell (and/or PCU (Power Control Unit)) from moving toward a horizontal direction in collision, in a vehicle with the fuel cell (and/or the PCU) vertically above a motor. SOLUTION: The vehicle includes: an engine compartment; the motor which is arranged in the engine compartment; the fuel cell which is arranged above the motor in the engine compartment and supplies power to the motor; and a supporting part which supports the fuel cell, wherein the supporting part rotatably supports the fuel cell in a vehicle height direction. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To improve a measuring accuracy of a supply volume of oxidant gas to a fuel cell. SOLUTION: The fuel cell is provided with a fuel cell housed in a case, and an oxidant gas supply-exhaust system having a supply passage of oxidant gas to the fuel cell, an exhausting passage of oxidant exhaust gas to be exhausted from the fuel cell, and a bypass passage circulating the oxidant exhaust gas from the exhausting passage to the supply passage as oxidant gas. In the oxidant gas supply-exhaust system, a gas flowmeter is installed in the supply passage at a downstream side further than the jointing position with the bypass passage and still at a part inside the case. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To sustain a valve-closed state of a shutoff valve provided in an oxidation gas supply/exhaust mechanism for a longer time after system stop. SOLUTION: The system includes: branch channels 33x, 33y branched from an air supply channel 33 for supplying an oxidation gas to shutoff valves 37, 38 provided in the air supply channel 33 and an air discharge channel 34; switch valves 37a, 38a for blocking or allowing supply of an oxidation gas to the branch channels 33x, 33y; branch channels 33xa, 33ya provided downstream from the switch valves 37a, 38a for holding the shutoff valves 37, 38 in a valve-closed state by supplying an oxidation gas to the shutoff valves 37, 38; buffer parts 37d, 38d provided in the branch channels 33xa, 33ya for retaining the oxidation gas; and a control section 4 for controlling the switch valves 37a, 38a to cause the branch channels 33xa, 33ya to supply an oxidation gas when a fuel cell system 1 is stopped. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To protect a plurality of solenoid operated valves used in a fuel cell system from the external environment. SOLUTION: The fuel cell system 20 has a fuel cell stack 22, three shut valves 30, a humidifier 34, and a solenoid operated valve housing box 50 arranged in order from the front side to the rear side of a vehicle. The solenoid operated valve housing box 50 houses a plurality of solenoid operated valves used in operation of the shut valves 30 and is connected to the shut valves 30 or the like by a fluid passage tube 80. The solenoid operated valve housing box 50 is constructed of a base plate and a shell and has a base plate waterproof structure and an electromagnetic shielding performance. The base plate which has a higher rigidity than the shell is arranged toward the front side of the vehicle. The fluid passage tube 80 is arranged in a row and fixed at the upper part of the humidifier 24. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel cell system capable of reducing the number of kinds of valve components. SOLUTION: An NC valve which becomes a closing state in non-opening and closing control and an NO valve which becomes an opening state in non-opening and closing control coexist in the fuel cell system. Both valves include a valve element 32 movable up and down; a valve seat in which a passage port 48 opening and closing according to move of the valve element 32 is formed; a recess 40 to which a compression spring 92 for biasing the valve element in the valve opening direction is incorporated; and a recessed part 44 to which a compression spring 94 for biasing the valve element 32 in the valve closing direction is incorporated. The valve 24 becomes the NO valve by incorporating only the compression spring 92 and becomes the NC valve by incorporating the only the compression spring 94. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To prevent power generation performance from being degraded by oxidation of supporting carbon in a cathode-side catalyst, in leaving a fuel cell system unattended. SOLUTION: Molar quantities of hydrogen and oxygen in a fuel gas supply/discharge system and an oxidation gas supply/discharge system for a fuel cell 2 are calculated, and the molar ratios of hydrogen and oxygen capable of being chemically reacted in a fuel gas and an oxidation gas in stopping the fuel cell 2 are controlled to be set not smaller than 2. It is preferable that hydrogen is supplied to keep the molar ratio in response to the value of a cell voltage in the fuel cell 2. It is also preferable that an entrance valve 17 and an exit valve 18 for sealing the oxidation gas in a gas passage in the oxidation gas supply/discharge system is arranged in the gas passage. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel storage tank capable of miniaturizing a mouth portion, a fuel cell system and a mobile body. SOLUTION: In a high-pressure gas tank 30 wherein a valve H100 composed of a solenoid valve is mounted on the mouth portion of a tank main body, and at least a coil 106 of the valve H100 is mounted inside with respect to an outer surface of the tank main body, at least a part of a harness passage 120a through which a harness 121 connected with the coil 106 is passed, is used also as a gas inflow passage 120 for charging a gas into the tank from the external, or as a gas outflow channel 117 for discharging the gas stored in the tank to the external. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel battery vehicle which quickly recovers a muffling function of a muffler in a low-temperature startup while avoiding the upsizing of a module structure.SOLUTION: The fuel battery vehicle 100 includes: a fuel battery 10; and the muffler 36 where gas emitted from the fuel battery 10 to the outside of the vehicle 100 passes. The fuel battery 10 is installed so that a coolant flowing in the fuel battery 10 flows from the front side to the rear side in the vehicle 100. The muffler 36 is disposed in the vicinity of the side face of the rear side of the fuel battery 10 so as to be parallel with the battery 10. Auxiliary machines 110 such as an air valve 35 at the upstream side of the muffler 36 are disposed in vicinities of side faces of the fuel battery 10 in left and right directions.
Abstract:
PROBLEM TO BE SOLVED: To provide an air supply device of a fuel cell vehicle capable of exhausting water entering a muffler.SOLUTION: An air introduction part 11 takes in air and introduces it to a fuel cell. A muffler 20 is provided between the air introduction part 11 and the fuel cell. The muffler 20 reduces airflow sounds of the air taken in by the air introduction part 11. The muffler 20 is arranged near a radiator fan 60. A drain hole 27 for exhausting the water entering inside to the outside is formed on the muffler 20. The drain hole 27 is arranged along an airflow path of the radiator fan 60.