| Patent application number | Description | Published |
|---|
| 20080220302 | FUEL CELL SYSTEM - There is provided a fuel cell system including a fuel supply control mechanism which is disposed between the fuel tank and the fuel cell and capable of interrupting the supply of the fuel; and a temperature sensor provided to a circuit connecting the fuel supply control mechanism to the fuel cell, for changing a resistance value according to at least one of a temperature of the power generation of the fuel cell and a temperature of an electronic device supplied with electric power from the fuel cell, in which the fuel supply control mechanism is operated by a change in the resistance value of the temperature sensor so that the supply of the fuel is interrupted. The system enables more reliably interrupting a supply of a fuel by a passive structure in a control when a temperature of a power generation portion of a fuel cell exceeds an allowable range. | 09-11-2008 |
| 20080254331 | FUEL CELL WITH SHUTOFF DEVICE - A fuel cell with a shutoff device is provided. The substance shutoff device is for shutting down the communication of at least one of an inflammable substance and an oxidizer when the inflammable substance and the oxidizer are brought into contact with each other to thereby prevent further contact between the inflammable substance and the oxidizer. The substance shutoff device comprises a catalyst portion provided in contact with one of an inflammable substance flow path and an oxidizer flow path; and a shutoff means, which operates by heating through a reaction between the inflammable substance and the oxidizer in the catalyst portion to shut down the communication of at least one of the inflammable substance and the oxidizer. | 10-16-2008 |
| 20080303532 | COMBUSTIBLE-GAS SENSOR, FUEL CELL SYSTEM, ABNORMALITY DETECTING METHOD, AND FUEL CELL SYSTEM CONTROL METHOD - A combustible-gas sensor includes a detecting circuit having a bridge comprising a compensator for compensating for a change in external environment and a detector for detecting a concentration of combustible gas. The detecting circuit includes a device for measuring a current passing through the detecting circuit. | 12-11-2008 |
| 20090035628 | FUEL CELL AND FUEL CELL APPARATUS - In a case of consuming a power generation reaction inducing gas, which causes lowering in performance and degradation of a fuel cell during suspension of operation thereof, and in a case of performing warm up at a time of activation at low temperatures, in order to automatically perform short circuiting control, there is provided a fuel cell having a structure including a switch which is switchable in accordance with a state of containing water generated in a power generation portion. | 02-05-2009 |
| 20090053580 | INFLAMMABLE SUBSTANCE SENSOR AND FUEL CELL INCLUDING THE SAME - There is provided an inflammable substance sensor which can be installed in a small space and a fuel cell including the same. The inflammable substance sensor for informing the outside of detection of an inflammable substance includes an odorant releasing member for releasing an odorant due to a chemical reaction of the inflammable substance. | 02-26-2009 |
| 20090095363 | PRESSURE CONTROL VALVE, PRODUCTION METHOD OF PRESSURE CONTROL VALVE, AND FUEL CELL SYSTEM WITH PRESSURE CONTROL VALVE - There are provided a pressure control valve which has sealing characteristics and durability, functions also as a temperature-dependent cutoff valve, and can be reduced in size; a method of producing the pressure control valve; and a fuel cell system having the pressure control valve mounted thereon. The pressure control valve includes a movable part which operates by a differential pressure, a valve part, and a transmission mechanism for transmitting an action of the movable part to the valve part, wherein either one of the movable part and the valve part is separated from the transmission mechanism. | 04-16-2009 |
| 20090117420 | METHOD FOR JUDGING SYSTEM CONDITION IN FUEL CELL SYSTEM - A method for rapidly judging abnormalities, such as a decrease in a residual fuel amount and valve leakage, using only one pressure detecting device, includes a step of detecting a pressure change per unit time by the pressure detecting device after switching the fuel cutoff device from a cutoff state to a flow state, and a step of judging, by a pressure state judging device, whether the fuel amount in a fuel tank is smaller than a predetermined residual amount by comparing the pressure change per unit time detected by the pressure detecting device with a predetermined pressure change. | 05-07-2009 |
| 20090162707 | PRESSURE CONTROL VALVE, METHOD OF PRODUCING PRESSURE CONTROL VALVE, FUEL CELL SYSTEM WITH PRESSURE CONTROL VALVE, AND METHOD OF CONTROLLING PRESSURE - Provided is a pressure control valve including a movable part ( | 06-25-2009 |
| 20090169926 | METHOD FOR STOPPING POWER GENERATION OF FUEL CELL SYSTEM AND FUEL CELL SYSTEM INCLUDING POWER GENERATION STOPPING UNIT - There is provided a method for stopping power generation of fuel cell system including: a fuel cell having a fuel electrode and an oxidizer electrode; a fuel container; and a fuel flow path for supplying a fuel from the fuel container to the fuel cell, which enables suppression of a pressure difference between the fuel electrode and the oxidizer electrode during a stop state of an operation of the fuel cell, the method including the steps of, during the stop state of the operation of the fuel cell: stopping supply of the fuel from the fuel container to the fuel cell; consuming a residual fuel in the fuel flow path by short-circuiting the fuel electrode and the oxidizer electrode or connecting a load between the fuel electrode and the oxidizer electrode; and opening the fuel flow path to the atmosphere. | 07-02-2009 |
| 20090197141 | EXHAUST FUEL DILUTING MECHANISM AND FUEL CELL SYSTEM WITH THE EXHAUST FUEL DILUTING MECHANISM - There is provided a diluting mechanism for an exhaust fuel including: a fuel inlet provided for supplying the exhaust fuel that is exhausted from the device using the fuel to the dilution chamber; a diluent inlet provided for supplying a diluent to the dilution chamber; a diffusion flow path provided in the dilution chamber for mixing the exhaust fuel that is supplied from the fuel inlet with the diluent that is supplied from the diluent inlet; a fuel exhaust port for exhausting the diluted exhaust fuel out of the dilution chamber through the diffusion flow path; and a nozzle that narrows a flow path, provided at the fuel inlet, in which the nozzle limits a supply quantity of the exhaust fuel to the dilution chamber. | 08-06-2009 |
| 20090269650 | CONNECTION MECHANISM FOR FLUID PIPINGS, MANUFACTURING METHOD FOR THE SAME, AND FUEL CELL SYSTEM INCLUDING CONNECTION MECHANISM FOR FLUID PIPINGS - A connection mechanism for fluid pipings, for connecting a plurality of the fluid pipings to flow a fluid, includes: a first component provided to one side of the plurality of the fluid pipings and including a movable portion constituting a part of a pressure control valve and operated by a differential pressure; a second component provided to another side of the plurality of the fluid pipings and including an opening and closing mechanism which is opened and closed by an operation of the movable portion constituting the part of the pressure control valve; and a transmission mechanism provided to at least one of the first component and the second component. | 10-29-2009 |
| 20100028754 | FUEL CELL SYSTEM WITH A CELL UNIT AND FUEL TANK UNIT IN A HOUSING AND ELECTRONIC DEVICE - A fuel cell system, which is mounted and used in a portable and small electric device. It comprises a cell unit comprising one or more fuel cells, a fuel tank unit for storing a fuel to be supplied to the cell unit, a fuel feed unit for supplying the fuel of the fuel tank unit to the cell unit, and an opening for supplying an oxidizer gas to the cell unit, in a thin housing having a substantially rectangular parallelepiped shape. The fuel tank unit, fuel feed unit and cell unit are located in one direction between two opposite ends of the housing. | 02-04-2010 |
| 20100221627 | HEAT TRANSFER CONTROLLING MECHANISM AND FUEL CELL SYSTEM HAVING THE HEAT TRANSFER CONTROLLING MECHANISM - A heat transfer controlling mechanism and a fuel cell system, which allow working fluid to flow in a predetermined direction in a loop-shaped flow path without a back flow, having a simple structure independent of the orientation during use, low power consumption, and efficient heat transfer and size reduction. The mechanism includes a vaporizing portion, a condensing portion, and a loop-shaped flow path connecting the vaporizing and the condensing portions so as to seal working fluid. The mechanism transports heat by vaporizing the fluid in the vaporizing portion and condensing the fluid in the condensing portion to control heat transfer. The mechanism further includes a gas passage suppressing portion on one side in the flow path, for allowing liquid, but not gas, to pass therethrough and a liquid passage suppressing portion on the other side in the flow path, for allowing gas, but not liquid, to pass therethrough. | 09-02-2010 |
