Patent application number | Description | Published |
20100092824 | FUEL CELL STACK - A separator includes a first fuel gas supply unit, a second fuel gas supply unit, first sandwiching sections, second sandwiching sections, a first case unit and a second case unit. The first and second sandwiching sections are connected to the first fuel gas supply unit and the second fuel gas supply unit, respectively, through first bridges. The first case unit and the second case unit are connected to the first sandwiching sections and the second sandwiching sections through second bridges. A first surface pressure F1 generated near a fuel gas supply passage, a second surface pressure F2 generated near an oxygen-containing gas supply passage, and a third surface pressure F3 generated near electrolyte electrode assemblies have different values. | 04-15-2010 |
20100099003 | FUEL CELL - A separator includes a first plate and a second plate. The separator has a first fuel gas supply unit, a second fuel gas supply unit, first sandwiching sections, second sandwiching sections, a first case unit and a second case unit. A fuel gas supply passage extends through the first fuel gas supply unit and the second fuel gas supply unit in a stacking direction. The first sandwiching sections are connected to the first fuel gas supply unit through first bridges, and the second sandwiching sections connected to a second fuel gas supply unit through first bridges. The first sandwiching sections and the second sandwiching sections sandwich electrolyte electrode assemblies. Each of the first sandwiching sections and the second sandwiching sections sandwich electrolyte electrode assemblies. Each of the first sandwiching sections has a fuel gas inlet and each of the second sandwiching sections has an oxygen-containing gas inlet. The first case unit and the second case unit have oxygen-containing gas supply units. The first case unit is connected to the first sandwiching sections through second bridges, and the second case unit is connected to the second sandwiching sections through second bridges. Oxygen-containing gas supply passages extend through the oxygen-containing gas supply units in the stacking direction. | 04-22-2010 |
20100203405 | FUEL CELL SYSTEM AND METHOD OF OPERATING THE FUEL CELL SYSTEM - A method of operating a fuel cell system includes the steps of detecting whether supply of a raw fuel to a fuel cell module is stopped or not, starting supply of water vapor to an electrode surface of an anode based on the temperature of a fuel cell stack when stop of the supply of the raw fuel is detected, starting supply of reverse electrical current to an electrolyte electrode assembly in a direction opposite to electrical current flowing at the time of power generation based on the temperature of the fuel cell stack, stopping the supply of the reverse electrical current at least based on any of the temperature of the fuel cell stack and the temperature of an evaporator, and stopping the supply of the water vapor at least based on any of the temperature of the fuel cell stack and the temperature of the evaporator. | 08-12-2010 |
20100221621 | OPERATION METHOD AT THE TIME OF LOAD REDUCTION OF FUEL CELL SYSTEM - An operation method at the time of load reduction of fuel cell system includes in this order a first step of determining a target power generation amount of the fuel cell module, a second step of increasing the flow rate of the oxygen-containing gas supplied to a fuel cell module, a third step of reducing the power generation amount of the fuel cell module, a fourth step of reducing the flow rate of the fuel gas supplied to the fuel cell module, a fifth step of reducing the flow rate of the water supplied to the fuel cell module, a sixth step of reducing the flow rate of the oxygen-containing gas supplied to the fuel cell module, and a seventh step of detecting whether the power generation amount of the fuel cell module reaches the target power generation amount or less. | 09-02-2010 |
20100221622 | OPERATION METHOD AT THE TIME OF LOAD INCREASE OF FUEL CELL SYSTEM - An operation method at the time of load increase of fuel cell system includes in this order a first step of determining a target power generation amount of the fuel cell module, a second step of increasing the flow rate of the oxygen-containing gas supplied to the fuel cell module, a third step of increasing the flow rate of the water supplied to the fuel cell module a fourth step of increasing the flow rate of the fuel gas supplied to the fuel cell module, a fifth step of increasing the power generation amount of the fuel cell module, and a sixth step of detecting whether the power generation amount of the fuel cell module reaches the target power generation amount or more. | 09-02-2010 |
20100227233 | FUEL CELL MODULE - A fuel cell module includes a fuel cell stack, a heat exchanger, an evaporator, a reformer, and a combustor for at least heating any of the fuel cell stack, the heat exchanger, the evaporator, and the reformer. The fuel cell module is surrounded by an inner heat insulating layer and an outer heat insulating layer. The inner heat insulating layer is used in a high temperature area, and the outer heat insulating layer is used in a low temperature area. The inner heat insulating layer contains a large amount of metal component in comparison with the outer heat insulating layer. | 09-09-2010 |
20110039182 | FUEL CELL - A fuel cell includes separators sandwiching electrolyte electrode assemblies. The separators each include first and second fuel gas supply sections through which a fuel gas supply passage extends centrally, first and second bridges extending radially outwardly from the first and second fuel gas supply sections and first and second sandwiching sections connected to the first and second bridges. A fuel gas channel and an oxygen-containing gas channel are provided in the first and second sandwiching sections. Each of the first sandwiching sections has pairs of fuel gas outlets, and a fuel gas consumed in the fuel gas channel is discharged through the fuel gas outlets. | 02-17-2011 |
20110045376 | FUEL CELL - A fuel cell includes separators sandwiching electrolyte electrode assemblies. The separators each include first and second fuel gas supply sections through which a fuel gas supply passage extends centrally, first and second bridges extending radially outwardly from the first and second fuel gas supply sections, and first and second sandwiching sections connected to the first and second bridges. A fuel gas channel and an oxygen-containing gas channel are provided in the first and second sandwiching sections. Each of the first sandwiching sections has pairs of fuel gas outlets and a fuel gas consumed in the fuel gas channel is discharged through the fuel gas outlets. | 02-24-2011 |
20130034782 | Fuel Cell System and Method of Operating the fuel Cell System - A method of operating a fuel cell system includes the steps of temporarily supplying a raw fuel to an electrode surface of an anode at the time of starting operation of the fuel cell system, supplying water vapor to the electrode surface of the anode at least based on any of the temperature of a fuel cell stack and the temperature of an evaporator after stopping the supply of the raw fuel, and supplying a fuel gas to the electrode surface of the anode by supplying the raw fuel and the water to the evaporator at least based on any of detection results of the pressure of the water supplied to the evaporator, the flow rate of the water supplied to the evaporator), the pressure of the water vapor discharged from the evaporator, and the flow rate of the water vapor discharged from the evaporator. | 02-07-2013 |