| Patent application number | Description | Published |
|---|
| 20080245588 | MOVING APPARATUS - To provide a fuel cell moving body that can extend travel distance by the battery when fuel cell failure has occurred. A fuel cell vehicle | 10-09-2008 |
| 20080248351 | Fuel Cell System - The object of the present invention is to provide a fuel cell system enabling reliable startup thereof, even below the freezing point. The fuel cell system | 10-09-2008 |
| 20080280174 | Fuel Cell System - A fuel cell system which includes: a fuel cell having a fuel gas flow path and an oxidant gas flow path and generating electricity by being supplied a fuel gas to the fuel gas flow path and an oxidant gas to the oxidant gas flow path; fuel gas supplying means; a discharge valve; fuel gas exchange means for exchanging an atmosphere inside the fuel gas flow path for the fuel gas at a starting of the system; and cold start determination means for determining whether to conduct or not to conduct the cold start of the system, wherein when the cold start determination means determines to conduct the cold start, the cold start determination means increases a total discharge amount of a gas to be discharged for exchanging the atmosphere inside the fuel gas flow path for the fuel gas, and thereby increases a fuel gas concentration in the fuel gas flow path. | 11-13-2008 |
| 20080290832 | FUEL CELL SYSTEM AND METHOD OF STARTING OPERATION OF FUEL CELL SYSTEM - A fuel cell system includes a fuel cell stack for power generation by electrochemical reactions of a fuel gas and an oxygen-containing gas, a high voltage energy storage capable of storing and discharging electrical energy generated by power generation of the fuel cell stack, and capable of being directly coupled to the fuel cell stack, a group of loads consuming at least electrical energy generated by the fuel cell stack or electrical energy discharged from the high voltage energy storage, and an auxiliary device control unit for reducing an amount of electrical energy remaining in the energy storage to a predetermined value by any of the group of loads, before starting power generation of the fuel cell stack. | 11-27-2008 |
| 20080299428 | FUEL CELL SYSTEM - A fuel cell system is provided that can suppress the degradation of the MEA and simultaneously assure the merchantability. The fuel cell system | 12-04-2008 |
| 20090035614 | FUEL CELL SYSTEM AND METHOD FOR OPERATING THE SAME - A fuel cell system including: a fuel cell including a fuel gas channel and an oxidant gas channel, which is configured to generate electricity using a fuel gas and an oxidant gas; a diluting unit configured to dilute gas discharged from the fuel gas channel by mixing the discharged gas with a dilution gas which is supplied from an oxidant gas supply unit and passed through and discharged from the fuel cell, and to exhaust the diluted gas to outside; a purge valve configured to purge gas in the fuel gas channel to the diluting unit; a scavenging unit configured to scavenge the fuel gas channel and the oxidant gas channel; and a dilution assist unit configured to supply a dilution assist gas to the diluting unit through an assist passage connected to the diluting unit to assist dilution in the diluting unit, during scavenging by the scavenging unit. | 02-05-2009 |
| 20090136791 | FUEL CELL SYSTEM AND CONTROL METHOD THEREOF - An object of the present invention is to provide a fuel cell system capable of starting below freezing point without increasing the size of the diluter. The fuel cell system | 05-28-2009 |
| 20100055523 | FUEL CELL SYSTEM - A fuel cell system draining water in a air-and-water separator includes: a fuel cell stack; a hydrogen-circulating line; an air-and-water separator; a drain unit including a drain valve for draining the water stored in the air-and-water separator; a drain-control unit for controlling the drain unit; a determining unit for determining whether or not the drain-control unit decides that the drain unit should be opened; a frozen-state-presuming unit presuming whether or not the drain unit is frozen; and a thawing-state-determining unit determining whether or not the drain unit is thawed, wherein the drain-control unit controls the drain unit so that a greater amount of the water is drained than a water drained in an ordinary state process which presumes that the drain unit is not frozen, after the frozen-state-presuming unit presumes that the drain unit is frozen and when the thawing-state-determining unit determines mat the drain unit is thawed. | 03-04-2010 |
| 20100203410 | FUEL CELL SYSTEM WITH COOLING AND METHOD OF CONTROLLING THE SAME - A fuel cell system includes: a fuel cell that generates an electric power and heat by a reaction of a reaction gas; a heat exchanger; a coolant circuit for a coolant between the fuel cell and the heat exchanger; a coolant circulating pump for circulating the coolant in the coolant circuit; and a drive motor for driving the coolant circulating pump, the coolant receiving and carrying the heat to the heat exchanger by the coolant circuit, the coolant circulating pump, and the drive motor. A rotational speed of the drive motor is controlled according to an upper limit of the rotational speed of the drive motor which may be determined on the basis of a cooling capacity of the heat exchanger, a speed of the vehicle mounting the fuel cell system, a generated electric power, and a flow rate of the reaction gas. | 08-12-2010 |
| 20100255394 | FUEL CELL SYSTEM AND A METHOD FOR CONTROLLING THE SAME - This invention provides a fuel cell system preventing from a first valve such as a purge valve exhausting gas outside. The fuel cell system includes a fuel cell stack, an anode off-gas channel, a purge valve and a scavenging gas exhaust valve connected to the anode off-gas channel and exhausting gas inside the anode off-gas channel outside, a drain valve connected to the anode off-gas channel arranged in an upstream side of a connecting point of the purge valve and the scavenging gas exhaust valve and exhausting the moisture exhausted from the anode channel | 10-07-2010 |
| 20100297518 | FUEL CELL SYSTEM - A fuel cell system comprises a fuel cell stack, a cell voltage monitor, a hydrogen tank, a hydrogen supply channel, an ejector, a hydrogen off-gas channel, a purge valve, a compressor, an air supply channel, a pressure control unit for controlling air pressure, a pilot pressure input channel branching off from the air supply channel and inputting the air pressure to the ejector as pilot pressure, and a control unit for controlling the purge valve and the pressure control unit. The ejector includes a pressure control mechanism which increases the ejector's secondary-side pressure by increasing the area of the nozzle's ejecting hole when the pilot pressure input from the pilot pressure input channel rises. When electricity generation status of the fuel cell stack is judged to be poor, the control unit opens the purge valve after raising the air pressure and the pilot pressure by using the pressure control unit. | 11-25-2010 |
| 20110143244 | START-UP METHOD FOR FUEL CELL - A start-up method for a fuel cell system that includes a fuel cell that carries out power generation by the electrochemical reaction between a fuel gas and the oxygen gas in the air; a fuel gas discharge path and a fuel gas supply path that are connected to the fuel cell; a fuel gas circulation path in which the fuel gas discharge path merges with the fuel gas supply path; and a purge valve provided on the fuel gas circulation path in order to discharge the circulating fuel gas from the fuel gas circulation path. The method includes the steps of opening the purge valve at the same time that the fuel gas is supplied to the fuel cell and replacing the nitrogen gas that originates in the air and is present in the fuel gas circulation path by fuel gas; and closing the purge valve after the nitrogen gas in the fuel gas circulation path has been replaced by the fuel gas. | 06-16-2011 |
