Abstract: To achieve smooth drawing of air into a fuel cell, the air-flow resistance of an exhaust passage is reduced and intrusion of water into an exhaust duct is prevented. In the present invention, in an exhaust device of a fuel cell vehicle, an exhaust chamber is attached to a lower surface of the front hood, the exhaust duct extends upward in a vertical direction from a rear portion of a fuel cell case, an exhaust port at an upper end of the exhaust duct opens to an interior of the exhaust chamber, a penetrating hole through which the inside of the exhaust chamber communicates with the outside space, is formed in the front hood in a portion in front of the exhaust port in a vehicle front and rear direction, the penetrating hole is covered with a cover, and an opening portion opening toward a rear side of the vehicle and being positioned above and away from an upper surface of the front hood, is formed in the cover.

Abstract: In an intake device for a fuel cell vehicle in which an intake duct supplies air to a fuel cell housed in a fuel cell case as a reaction gas, the intake duct includes a pair of top and bottom walls and a pair of left and right side walls, the top wall curves downward while extending from a front face of the fuel cell case toward the front side of vehicle, and an air introduction port opening toward a lower side of the vehicle is formed between a lower end portion of the top wall and a front end portion of the bottom wall.

Abstract: An air supply and exhaust structure for supplying a reaction air to a fuel cell and exhausting the reaction air passing through the fuel cell includes: an intake duct configured to guide reaction air to the fuel cell; an exhaust duct configured to discharge the reaction air passing through the fuel cell to an outside of the fuel cell; a blower provided in the exhaust duct and configured to suck the reaction air passing through the fuel cell to promote discharge of the reaction air; and an exhaust side shield unit which is disposed inside the exhaust duct and between the fuel cell and the blower and configured to temporarily block the reaction air discharged from the fuel cell and to retain the reaction air in a periphery of the fuel cell so as to introduce the reaction air to the fuel cell.

Abstract: This invention relates to a fuel cell system comprising: a fuel cell stack; a hydrogen-gas supply device configured to supply hydrogen gas filled in a hydrogen tank into the fuel cell stack along with pressure reduction of the hydrogen gas; an air supply duct configured to supply air into the fuel cell stack; and an air exhaust duct configured to exhaust surplus air from the fuel cell stack. The hydrogen-gas supply device is disposed inside a heat exchange chamber capable of communicating with the air supply duct and the air exhaust duct.

Abstract: An air-intake apparatus for an air-cooled fuel cell according to this invention is provided with outside air temperature-detecting means; an outside air flow passage; an outside air flow rate-regulating valve; inside air temperature-detecting means; an inside air flow passage; an inside air flow rate-regulating valve; an air-conditioning air passage; an air-conditioning air flow rate-regulating valve; and air-intake control means for driving and controlling the outside air flow rate-regulating valve, the inside air flow rate-regulating valve, and the air-conditioning air flow rate-regulating valve on the basis of respective temperatures detected by the outside air temperature-detecting means and the inside air temperature-detecting means, wherein this air-intake control means generates a gas having a temperature optimized by making the gas pass through one or more of these flow passages and regulating valves, and supplies this gas to the fuel cell main unit as an oxidizing gas.

Abstract: An exhaust apparatus includes a lower side exhaust duct and an upper side exhaust duct which are branched vertically, and in that the lower side exhaust duct is extended toward the lower side of the vehicle from an exhaust outlet portion of the air-cooled fuel cell stack, and the downstream end portion of the lower side exhaust duct is opened at a lower portion of the front compartment, while the upper side exhaust duct is extended toward the upper side of the vehicle from an upper portion of an outer wall of the lower side exhaust duct, the outer wall extending toward the lower side of the vehicle, and the downstream end portion of the upper side exhaust duct is opened between the rear end portion of the front hood and the front end portion of the front window.

Abstract: A heating apparatus for a fuel cell vehicle is provided. The apparatus includes a fuel cell for generating electricity by a chemical reaction of oxygen and hydrogen, a cathode exhaust passage through which outside air introduced and supplied to the cathode electrode of the fuel cell so as to be used for the power generation reaction is discharged from the fuel cell, and an anode exhaust passage through which the hydrogen is discharged from the fuel cell. The heating apparatus further includes a branch passage which is branched from a branch point of the cathode exhaust passage and supplies the air discharged from the fuel cell to the vehicle compartment, and the anode exhaust passage is joined to the cathode exhaust passage on the downstream side of the branch point.

Abstract: A hybrid fuel cell system that employs a fuel cell stack and an ultracapacitor. A diode is provided on a high voltage electrical bus between the fuel cell stack and the ultracapacitor so that high voltage from the ultracapacitor does not affect the operation of the fuel cell stack. During system start-up, a by-pass switch is closed to by-pass the ultracapacitor so that power from the ultracapacitor can be used to start various system loads, such as a cathode side air compressor that provides air to the fuel cell stack. A 12 volt-to-high voltage converter is employed to provide a low power, high voltage supply from a low voltage battery to the system loads at start-up when the by-pass switch is opened, but before a fuel cell stack switch is closed.

Abstract: A hybrid fuel cell system that employs a fuel cell stack and an ultracapacitor. A diode is provided on a high voltage electrical bus between the fuel cell stack and the ultracapacitor so that high voltage from the ultracapacitor does not affect the operation of the fuel cell stack. During system start-up, a by-pass switch is closed to by-pass the ultracapacitor so that power from the ultracapacitor can be used to start various system loads, such as a cathode side air compressor that provides air to the fuel cell stack. A 12 volt-to-high voltage converter is employed to provide a low power, high voltage supply from a low voltage battery to the system loads at start-up when the by-pass switch is opened, but before a fuel cell stack switch is closed.