WO2009005169A1 - 燃料電池システム及びその制御方法 - Google Patents
燃料電池システム及びその制御方法 Download PDFInfo
- Publication number
- WO2009005169A1 WO2009005169A1 PCT/JP2008/062430 JP2008062430W WO2009005169A1 WO 2009005169 A1 WO2009005169 A1 WO 2009005169A1 JP 2008062430 W JP2008062430 W JP 2008062430W WO 2009005169 A1 WO2009005169 A1 WO 2009005169A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel cell
- gas
- pressure
- flow path
- cell system
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M16/00—Structural combinations of different types of electrochemical generators
- H01M16/003—Structural combinations of different types of electrochemical generators of fuel cells with other electrochemical devices, e.g. capacitors, electrolysers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04097—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with recycling of the reactants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04126—Humidifying
- H01M8/04141—Humidifying by water containing exhaust gases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
- H01M8/04335—Temperature; Ambient temperature of cathode reactants at the inlet or inside the fuel cell
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
- H01M8/04365—Temperature; Ambient temperature of other components of a fuel cell or fuel cell stacks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04395—Pressure; Ambient pressure; Flow of cathode reactants at the inlet or inside the fuel cell
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04537—Electric variables
- H01M8/04574—Current
- H01M8/04589—Current of fuel cell stacks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04664—Failure or abnormal function
- H01M8/04686—Failure or abnormal function of auxiliary devices, e.g. batteries, capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04858—Electric variables
- H01M8/04865—Voltage
- H01M8/0488—Voltage of fuel cell stacks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04955—Shut-off or shut-down of fuel cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M2008/1095—Fuel cells with polymeric electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04776—Pressure; Flow at auxiliary devices, e.g. reformer, compressor, burner
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
Definitions
- the present invention relates to a fuel cell system and a control method thereof. '' Background technology
- a fuel cell system including a fuel cell that receives a supply of reaction gas (fuel gas and oxidizing gas) to generate power
- reaction gas fuel gas and oxidizing gas
- fuel off-gas containing surplus fuel hydrogen
- the amount of hydrogen contained in the fuel off-gas may exceed the specified environmental standard value. For this reason, a technique has been proposed for reducing the hydrogen concentration by mixing and diluting the fuel off-gas discharged from the fuel cell anode with a diluent gas such as air.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a fuel cell system capable of suppressing the discharge of pumping hydrogen during low-efficiency power generation without relying on dilution means.
- a fuel cell system comprises: a fuel cell that generates power; and a low-efficiency power generation of the fuel cell by reducing the amount of reaction gas supplied to the fuel cell compared to that during normal power generation.
- a fuel cell system comprising: a control means for realizing the following: the control means, wherein the generation amount of anode gas (bombing hydrogen) generated by the power sword of the fuel cell during low-efficiency power generation is less than a predetermined amount
- the lower limit value of the voltage of the fuel cell is set.
- control method includes a fuel cell that generates power, and a fuel cell that realizes low-efficiency power generation of the fuel cell by reducing the amount of reaction gas supplied to the fuel cell compared to that during normal power generation.
- the amount of bombing hydrogen generated can be suppressed to a predetermined amount or less by setting the lower limit voltage of the fuel cell to a specific value during low-efficiency power generation. Accordingly, since the amount of bombing hydrogen discharged during low-efficiency power generation can be reduced, an apparatus for diluting the pumping hydrogen can be omitted.
- the fuel cell system may further include a dilution means for diluting the pumping hydrogen. Only when the diluting means is abnormal, it is possible to employ a control device that sets the lower limit voltage of the fuel cell so that the amount of bombing hydrogen generated during low-efficiency power generation is less than or equal to a predetermined amount.
- the concentration of the bombing hydrogen can be diluted by the diluting means when the diluting means is normal, and low-efficiency power generation is performed without particularly setting the lower limit value of the voltage. Therefore, warm-up (self-heating) can be performed effectively.
- the dilution means is abnormal, low-efficiency power generation is performed while setting the lower limit value of the fuel cell voltage to a specific value, so that the amount of bombing hydrogen generated can be suppressed to a predetermined amount or less. it can.
- a gas supply flow path for supplying an oxidant gas supplied from an oxidant gas supply source to the cathode of the fuel cell, and a gas exhaust flow for circulating the gas discharged from the cathode of the fuel cell Roads and can be provided.
- a bypass flow path for bypassing part of the oxidant gas flowing through the gas supply flow path to the gas discharge flow path and a bypass valve for adjusting the flow rate of the oxidant gas flowing through the bypass flow path;
- a diluting means for diluting the pumping hydrogen with the oxidizing gas flowing from the gas supply flow path to the gas discharge flow path via the bypass flow path.
- a pressure sensor for detecting the pressure of the oxidizing gas supplied from the oxidizing gas supply source can be provided.
- the pressure of the oxidant gas supplied from the oxidant gas supply source is estimated based on the command value of the flow rate of the oxidant gas flowing through the nopass flow path and the opening of the bypass valve, and the estimated pressure It is possible to employ an abnormality determination means for determining an abnormality of the dilution means based on a deviation between the detected pressure detected by the pressure sensor.
- Abnormality determination means for determining that a closed failure has occurred in the bypass valve can be employed.
- dilution means having a back pressure valve for adjusting the pressure of the gas flowing through the gas discharge flow path can be employed.
- the estimated pressure is greater than the detected pressure and the absolute value of the deviation between the estimated pressure and the detected pressure exceeds a predetermined threshold, it is determined that an open failure has occurred in the back pressure valve. Can be adopted.
- FIG. 1 is a configuration diagram of a fuel cell system according to an embodiment of the present invention.
- FIG. 2A is an explanatory diagram showing the relationship between output power and power loss during normal operation of the fuel cell system shown in FIG.
- FIG. 2B is an explanatory diagram showing the relationship between output power and power loss during low-efficiency operation of the fuel cell system shown in FIG.
- Fig. 3 is an IV characteristic map of the fuel cell system shown in Fig. 1 during normal operation and low-efficiency operation.
- 4A and 4B are explanatory diagrams for explaining the principle of generation of bombing hydrogen.
- FIG. 5 is a table used for setting the lower voltage limit during low-efficiency operation (when the dilution means is abnormal) of the fuel cell system shown in FIG.
- Figure 6 is an approximate curve map created by plotting the data in the table shown in Figure 5.
- FIG. 7 is a flowchart for explaining the operation method of the fuel cell system shown in FIG.
- the fuel cell system 1 includes a fuel cell 2 that generates electric power upon receipt of reaction gas (oxidized gas and fuel gas), and air as an oxidant gas.
- Oxidizing gas piping system 3 to be supplied to fuel cell
- fuel gas piping system 4 to supply hydrogen gas as fuel gas to fuel cell 2
- power system 5 to charge / discharge system power
- control device 6 to control the entire system, etc. It has.
- the fuel cell 2 is composed of, for example, a solid polymer electrolyte type and has a stack structure in which a large number of unit cells 20 (FIG. 4A) are stacked.
- the unit cell 20 of the fuel cell 2 has a force sword (air electrode) on one surface of the electrolyte membrane 21 (FIG.
- anode fuel electrode
- a power sword a pair of separators so as to sandwich the anode from both sides.
- the fuel gas is supplied to the fuel gas flow path of one separator, and the oxidant gas is supplied to the oxidizing gas flow path of the other separator, and the fuel cell 2 generates electric power by this gas supply.
- the cathode off-gas is discharged from the cathode of the fuel cell 2.
- 'Cathode off-gas includes oxygen off-gas after being subjected to the cell reaction of fuel cell 2 and bombing hydrogen (described later) produced by a force sword.
- the fuel cell 2 includes a current sensor 2 a and a voltage sensor 2 b that detect current and voltage (output current and output voltage) during power generation, and a temperature that detects the temperature of the fuel cell 2.
- the fuel cell 2 may be a phosphoric acid type or a molten carbonate type.
- Oxidizing gas piping system 3 includes air compressor 3 1, oxidizing gas supply flow path 3 2, calo-humidity module 3 3, force sword-off gas flow path 3 4, bypass flow path 3 8, diluter 4 0, air compressor 3 1 It has a motor Ml etc. to drive.
- the air compressor 3 1 is driven by the driving force of the motor M l that is operated by the control command of the control device 6, and oxygen (oxidized gas) taken from outside air through an air filter (not shown) is the fuel cell 2.
- the oxidizing gas supply flow path 3 2 is a gas flow path for introducing oxygen supplied from the air compressor 31 to the power sword of the fuel cell 2.
- the oxidizing gas supply flow path 3 2 is provided with a pressure sensor 35 and a temperature sensor 3 6 for detecting the ffi force and temperature of the oxidizing gas supplied from the air compressor 31. Information on the pressure and temperature detected by the pressure sensor 35 and the temperature sensor is used for determining the abnormality of the diluting means described later.
- the humidification module 3 3 exchanges moisture between the low-humidity oxidizing gas flowing in the oxidizing gas supply flow path 3 2 and the high-humid power sword off gas flowing in the force sword-off gas flow path 3 4, and fuel. Moisturize the oxidizing gas supplied to Battery 2 appropriately.
- the cathode off gas flow path 34 is a gas flow path for exhausting the force sword off gas outside the system, and is an embodiment of the gas discharge flow path in the present invention.
- a back pressure valve 3 7 is arranged near the force sword pole outlet of the force sword off gas flow path 3 4.
- the control device 6 controls the opening / closing operation of the back pressure valve 37, whereby the pressure of the cathode offgas flowing through the cathode offgas flow path 34 is adjusted, and as a result, the discharge amount of bombing hydrogen is adjusted.
- the bypass flow path 3 8 leads a part of the oxidizing gas flowing through the oxidizing gas supply flow path 3 2 to the cathode off-gas flow path 3 4 by bypassing the fuel cell 2.
- a bypass valve 3 9 is provided in the bypass flow path 3 8. The flow rate of the oxidizing gas flowing through the bypass channel 3 8 is adjusted by the bypass valve 39.
- the control device 6 controls the opening / closing operation of the bypass valve 3 9, the oxidizing gas is supplied from the oxidizing gas supply flow path 3 2 to the force sword-off gas flow path 3 4 via the bypass flow path 3 8.
- the pumping hydrogen flowing through the force sword-off gas channel 34 is diluted. That is, the bypass flow path 3 8, the bypass valve 3 9 and the control device 6 constitute a dilution means in the present invention.
- the back pressure valve 37 also adjusts the amount of bombing hydrogen discharged, and therefore constitutes a dilution means in the present invention.
- the diluter 40 dilutes so that the hydrogen gas discharge concentration is kept below a preset concentration (predetermined environmental standard value).
- the diluter 40 communicates with the downstream of the force sword off-gas channel 3 4 and the downstream of the anode off-gas channel 4 4 described later.
- the hydrogen off-gas and the oxygen off-gas are mixed and diluted and exhausted outside the system. It becomes this.
- the fuel gas piping system 4 includes a fuel gas supply source 41, a fuel gas supply channel 4 2, a fuel gas circulation channel 4 3, an anode off-gas channel 4 4, a hydrogen circulation pump 4 5, a check valve 4 6, and hydrogen.
- a motor M 2 and the like for driving the circulation pump 45 are provided.
- the fuel gas supply source 41 is a means for supplying a fuel gas such as hydrogen gas to the fuel cell 2, and is constituted by, for example, a high-pressure hydrogen tank or a hydrogen storage tank.
- the fuel gas supply channel 4 2 is a gas channel for guiding the fuel gas released from the fuel gas supply source 41 to the anode electrode of the fuel cell 2, and the gas channel is a tank from upstream to downstream.
- Valves such as valve H1, hydrogen supply valve H2, and FC inlet valve H3 are provided.
- the FC inlet valve H 3 is a short valve for supplying (or shutting off) fuel gas to the fuel cell 2, and is constituted by, for example, an electromagnetic valve.
- the fuel gas circulation passage 4 3 is a return gas passage for recirculating unreacted fuel gas to the fuel cell 2, and the gas passage has an FC outlet valve H 4 and a hydrogen circulation pump 4 from upstream to downstream. 5.
- Check valves 4 and 6 are provided respectively.
- the low-pressure unreacted fuel gas discharged from the fuel cell 2 is moderately pressurized by the hydrogen circulation pump 45 driven by the driving force of the motor M 2 that operates according to the control command of the control device 6, and the fuel gas is supplied. Guided to channel 4 2.
- the backflow of the fuel gas from the fuel gas supply channel 4 2 to the fuel gas circulation channel 4 3 is suppressed by the check valve 46.
- the anode off-gas channel 44 is a gas channel for exhausting the anode off-gas containing the hydrogen off-gas discharged from the fuel cell 2 to the outside of the system, and a purge valve H 5 is provided in the gas channel. Yes.
- the electric power system 5 includes a high-voltage DCZDC converter 51, a battery 52, a traction inverter 53, an auxiliary inverter 54, a traction motor M3, an auxiliary motor M4, and the like.
- the high-voltage DC ZD C converter 5 1 is a DC voltage converter that adjusts the DC voltage input from the battery 5 2 and outputs it to the traction inverter 5 3 side, and the fuel cell 2 or traction motor M And a function of adjusting the DC voltage input from 3 and outputting it to the battery 52.
- These functions of the high-voltage DC / DC converter 51 allow the battery 52 to be charged / discharged.
- the output voltage of the fuel cell 2 is controlled by the high voltage DCZDC converter 51.
- the battery 52 is a chargeable / dischargeable secondary battery (for example, a nickel metal hydride battery).
- the battery 52 can be charged with surplus power or supplementarily supplied with power by control of a battery computer (not shown).
- Part of the direct current generated by the fuel cell 2 is a high voltage DC / DC
- the battery is boosted / lowered by the battery 51 and charged to the battery 52.
- a chargeable / dischargeable capacitor for example, a capacitor
- the Traction Inverter 53 and the Auxiliary Inverter 5 4 are pulse width modulation type PWM inverters, and the DC power output from the fuel cell 2 or the battery 52 according to the given control command is three-phase AC. Convert to electric power and supply to traction motor M3 and auxiliary motor M4.
- the traction motor M 3 is a motor for driving the wheels 7 L and 7 R.
- Auxiliary motor M4 is a motor for driving various auxiliary machines, and is a generic term for motor Ml that drives air compressor 31 and motor M2 that drives hydrogen circulation pump 45. .
- the control device 6 is composed of CPU, ROM, RAM, etc., and controls each part of the system in an integrated manner based on each sensor signal inputted.
- control device 6 calculates the required output power of the fuel cell 2 based on each sensor signal sent from an unillustrated accelerator pedal sensor or the like that detects the accelerator pedal opening. Then, the control device 6 controls the output voltage and output current of the fuel cell 2 so as to generate output power corresponding to the required output power. Further, the control device 6 controls the traction motor M 3 and the auxiliary motor M 4 by controlling the output pulse widths of the truncation inverter 53 and the auxiliary inverter 54.
- the control device 6 detects the temperature of the fuel cell 2 based on the sensor signal output from the temperature sensor 2 c provided in the fuel cell 2, and compares the detected temperature with a predetermined reference temperature. Determine whether warm-up is necessary. Then, when it is determined that the temperature of the fuel cell 2 exceeds the reference temperature and the warm-up is unnecessary, the control device 6 performs a normal operation process.
- the normal operation process refers to a process of operating at an efficient operation point (that is, an operation point with small power loss) without warming up.
- the control device 6 is based on the temperature of the fuel cell 2. When it is determined that the temperature is below the temperature and warm-up is required, low-efficiency operation processing (processing that operates at an operation point with low power generation efficiency) is performed.
- the horizontal axis represents the output current
- the vertical axis represents the output voltage
- OCV Open Circuit Voltage
- the control device 6 has a normal operation operating point (I., V 0 with a small power loss with respect to the output power). ) Start operation.
- the control device 6 operates at a low-efficiency operation point (I V L ) with a large power loss as shown in Fig. 2B.
- I V L low-efficiency operation point
- the amount of power loss thermal energy
- Figure 3 shows the IV characteristic map during normal operation (solid line) and the IV characteristic map during low-efficiency operation (broken line). These are shown during normal operation and low-efficiency operation.
- the operating point can be determined using the IV characteristic map.
- the IV characteristic map (dashed line) during low-efficiency operation can be set as appropriate according to the output demand from the traction motor M3.
- the example shown in Fig. 3 is an example.
- the air stoichiometric ratio is set to 1.0 or higher so that high power generation efficiency can be obtained while suppressing power loss.
- the air stoichiometric ratio is the ratio of the actual oxidant gas supply amount to the theoretical value of the oxidant gas supply amount necessary for power generation of the fuel cell 2 (the value obtained by dividing the actual oxidant gas supply amount by the theoretical value). means.
- the power loss raise the temperature of the fuel cell 2 and set the air stoichiometric ratio to less than 1.0. If the air stoichiometric ratio is set low, the power loss (thermal energy) of the energy that can be extracted by the reaction between hydrogen and oxygen can be increased actively, while the cathode of the fuel cell 2 is bombed. Hydrogen is generated.
- FIG. 4A and FIG. 4B are diagrams for explaining the generation principle of pumping hydrogen.
- FIG. 4A is a diagram showing a battery reaction during normal operation
- FIG. 4B is a diagram showing a battery reaction during low-efficiency operation.
- Each unit cell 20 of the fuel cell 2 includes an electrolyte membrane 21, and an anode and a force sword that sandwich the electrolyte membrane 21.
- Fuel gas containing hydrogen (H 2 ) is supplied to the anode
- oxidizing gas containing oxygen (O 2 ) is supplied to the power sword.
- the reaction of the following chemical formula (A) proceeds and hydrogen is separated from hydrogen ions and electrons. Hydrogen ions generated at the anode pass through the electrolyte membrane 21 and move to the cathode, while electrons move from the anode to the cathode through an external circuit.
- the controller 6 is used for low-efficiency power generation where such bombing hydrogen is generated and the dilution means is abnormal (the back pressure valve 3 7 or When the bypass valve 39 fails), the lower limit value of the output voltage of the fuel cell 2 is set so that the amount of bombing hydrogen generated is less than or equal to the predetermined amount, that is, the control device 6 is the control means in the present invention. Function as one embodiment.
- FIG. 5 is a table that defines the relationship between the output current (A) of the fuel cell 2, the temperature (° C) of the fuel cell 2, and the lower limit value (V) of the output voltage of the fuel cell 2.
- 6 is a map that draws an approximate curve by plotting the values in the table in Fig. 5.
- the lower limit value of the output voltage of the fuel cell 2 shown in the table of FIG. 5 is obtained by changing the output current of the fuel cell 2 to I ⁇ I 10 and changing the temperature of the fuel cell 2 from T to T 6 . In this case, the value is set so that the generation amount of pumping hydrogen is not more than a predetermined amount.
- the control device 6 sets the lower limit value of the output voltage of the fuel cell 2 to V 31 , V 32 , “”, V 36 ,.
- the control device 6 sets the lower limit value of the output voltage of the fuel cell 2 to V 61 , V 62 , ⁇ ⁇ ⁇ ⁇ , V 6 Q.
- the device 6 is in a region above the approximate curve T N (N: 1 to 6) drawn in the map of FIG. Set the output current and output voltage.
- control device 6 is based on the command value of the flow rate of the oxidizing gas flowing through the bypass flow path 38, the opening degree of the bypass valve 39, and the temperature of the oxidizing gas detected by the temperature sensor 36. Compress the pressure of the oxidizing gas supplied from the air compressor 3 1. Determine. Based on the deviation between the estimated pressure and the pressure of the oxidant gas detected by the pressure sensor 35, the control device 6 detects that the dilution means is abnormal (failure of the back pressure valve 37 and the bypass valve 39). Determine. That is, the control device 6 also functions as an embodiment of the abnormality determination means in the present invention.
- the abnormality determination method for the dilution means by the control device 6 will be specifically described.
- the flow rate command value Q of the oxidizing gas flowing through the bypass passage 3 8 and the opening A of the bypass valve 3 9 are values determined by the control device 6 according to the operating point of the low efficiency operation of the fuel cell 2. It is.
- the controller 6 calculates the estimated pressure P E calculated in this way and the pressure (detected pressure) P detected by the pressure sensor 3 5. . And are calculated, and the absolute value e of the deviation between the two is calculated. Then, when the absolute value e of the calculated deviation exceeds a predetermined threshold, the control device 6 determines that the back pressure valve 37 or the bypass valve 39 is out of order (the diluting means is abnormal).
- the control device 6 has the estimated pressure P E smaller than the detected pressure P 0 , and these estimated pressure P E and detected pressure P.
- the absolute value e of the deviation from the above exceeds a predetermined threshold value, it is determined that a closed failure has occurred in the bypass valve 39.
- a closed failure occurs in the bypass valve 3 9
- the oxidizing gas pressure (detected pressure) in the oxidizing gas supply passage 3 2 is the theoretical value (estimated). This is because it is significantly higher than (pressure).
- the control device 6 the estimated pressure P E is greater than the detected pressure P 0, and, when the absolute value e of the deviation between these estimated pressure P E and the detected pressure P 0 exceeds a predetermined threshold, back It is determined that an open failure has occurred in the pressure valve 37.
- an open failure occurs in the back pressure valve 37, gas leaks to the downstream side of the back pressure valve 37. Therefore, the pressure of the oxidizing gas in the oxidizing gas supply flow path 32 on the upstream side of the back pressure valve 37 ( This is because the (detected pressure) is significantly lower than the theoretical value (estimated pressure).
- the control device 6 detects the temperature of the fuel cell 2 based on the sensor signal output from the temperature sensor 2 c (temperature detection step: S 1), and compares the detected temperature with a predetermined reference temperature. It is determined whether or not warm-up is necessary (warm-up determination step: S 2). In the warm-up determination step S2, the control device 6 realizes the normal operation when it is determined that the temperature of the fuel cell 2 exceeds the reference temperature and the warm-up is unnecessary (normal operation step: S1 4). . On the other hand, in the warm-up determination step S2, the control device 6 determines whether or not the dilution means is abnormal when it is determined that the temperature of the fuel cell 2 is lower than the reference temperature and the dredger is necessary. (Whether the back pressure valve 37 or the bypass valve 39 is out of order) is determined (dilution means abnormality determination step: S3). Low-efficiency operation during abnormal conditions>
- the control device 6 calculates the estimated pressure P E calculated in the dilution means abnormality determination step S 3 and the detected pressure P by the pressure sensor 35.
- the absolute value e of the deviation exceeds the predetermined threshold (the dilution means is abnormal)
- the following abnormal low-efficiency operation Perform step S6). That is, the control device 6 detects the output current of the fuel cell 2 detected by the current sensor 2a, the temperature of the fuel cell 2 detected by the temperature sensor 2c, the tables shown in FIGS. Set the lower limit value of the output voltage of the fuel cell 2 based on the Pressure lower limit setting process: S 4).
- the control device 6 sets a target low-efficiency operation operating point (target output current command value and output voltage command value) that exceeds the set voltage lower limit value (low-efficiency operation point setting process in case of abnormality: S5).
- the control device 6 controls the output voltage of the fuel cell 2 detected by the voltage sensor 2 b to be close to the output voltage command value by using the high voltage DCZDC converter 51, and the air compressor 3 1 Control the fuel cell 2 output current detected by the current sensor 2a closer to the output current command value by reducing the amount of air supplied to the fuel cell 2 using the back pressure valve 3 7 Process: S6).
- the control device 6 determines whether or not the temperature of the fuel cell 2 has exceeded a predetermined reference temperature (temperature determination step: S 7), and if the temperature of the fuel cell 2 has exceeded the reference temperature, an abnormal condition has occurred.
- a predetermined reference temperature temperature determination step: S 7
- the process returns to the dilution means abnormality determination step S3 and the control is continued.
- the control of the dilution means composed of the bypass valve 39 and the like is stopped.
- the controller 6 determines that the absolute value e of the deviation between the estimated pressure P E calculated in the dilution means abnormality determination step S 3 and the detected pressure P 0 detected by the pressure sensor 35 is equal to or less than a predetermined threshold value (When it is determined that the dilution means is normal), the following normal low-efficiency operation (normal low-efficiency operating point setting step S8 to hydrogen dilution step S12) is performed.
- control device 6 sets a target low-efficiency operation operating point according to a predetermined warm-up target temperature or the like (normal low-efficiency operating point setting process: S 8), and uses the high-pressure DCZC converter 5 1.
- the current control using the air compressor 31 and the back pressure valve 37 is performed (normal current voltage control process: S9).
- control device 6 derives the purge hydrogen amount and the bombing hydrogen amount corresponding to the set target low-efficiency operation point based on a map or the like, and adds them.
- the total discharged hydrogen amount from the fuel cell 2 is calculated (total discharged hydrogen amount calculating step: S 1 0).
- the control device 6 uses the dilution information (the command for the flow rate of the oxidizing gas flowing through the bypass flow path 3 8) that is necessary to bring the discharged hydrogen concentration below the predetermined environmental reference value. Value, etc.) (dilution information calculation step: S 1 1). Based on the calculated dilution information, the control device 6 adjusts the rotation speed of the air conditioner press 31, the opening degree of the back pressure valve 37, the opening degree of the bypass valve 39, etc. Dilute the bombing hydrogen discharged to the tank (hydrogen dilution process: S 1 2).
- the control device 6 determines whether or not the temperature of the fuel cell 2 has exceeded a predetermined reference temperature (temperature determination step: S 1 3), and is normal if the temperature of the fuel cell 2 has exceeded the reference temperature.
- a predetermined reference temperature temperature determination step: S 1 3
- the bombing hydrogen can be diluted by the dilution means composed of the bypass valve 39 and the like, so that the lower limit value of the voltage is not limited.
- the concentration of the pumping hydrogen can be diluted by the diluting means, and in particular, the lower limit value of the voltage is set.
- low-efficiency power generation can be implemented, and warm-up (self-heating) can be performed effectively.
- the dilution means is abnormal, low-efficiency power generation is performed while setting the lower limit of the voltage of the fuel cell 2 to a specific value, so that the amount of bombing hydrogen generated can be suppressed to a predetermined amount or less. it can.
- the example in which the low-efficiency operation is performed for the purpose of the dredger when the temperature of the fuel cell 2 is lowered is shown.
- the temperature sensor 2 c attached to the fuel cell 2 is used to detect the temperature of the fuel cell 2 and determine whether or not warm-up is necessary. Instead of temperature, it is also possible to determine whether warm air is necessary by detecting the outside air temperature and the temperature of parts around the fuel cell.
- the fuel cell system according to the present invention can be mounted on a fuel cell vehicle as shown in the above embodiment, and can also be mounted on various mobile bodies (robots, ships, aircrafts, etc.) other than the fuel cell vehicle. It is. Further, the fuel cell system according to the present invention may be applied to a stationary power generation system used as a power generation facility for a building (house, building, etc.).
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2008800141727A CN101675550B (zh) | 2007-07-03 | 2008-07-03 | 燃料电池系统及其控制方法 |
US12/600,953 US8361667B2 (en) | 2007-07-03 | 2008-07-03 | Fuel cell system and its control method |
KR1020097027329A KR101136497B1 (ko) | 2007-07-03 | 2008-07-03 | 연료전지시스템 및 그 제어방법 |
DE112008001674.7T DE112008001674B4 (de) | 2007-07-03 | 2008-07-03 | Brennstoffzellensystem und Steuerverfahren desselben |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007-175150 | 2007-07-03 | ||
JP2007175150A JP4905706B2 (ja) | 2007-07-03 | 2007-07-03 | 燃料電池システム及びその制御方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009005169A1 true WO2009005169A1 (ja) | 2009-01-08 |
Family
ID=40226200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/062430 WO2009005169A1 (ja) | 2007-07-03 | 2008-07-03 | 燃料電池システム及びその制御方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8361667B2 (ja) |
JP (1) | JP4905706B2 (ja) |
KR (1) | KR101136497B1 (ja) |
CN (1) | CN101675550B (ja) |
DE (1) | DE112008001674B4 (ja) |
WO (1) | WO2009005169A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102473938A (zh) * | 2009-07-30 | 2012-05-23 | 丰田自动车株式会社 | 燃料电池系统 |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5534688B2 (ja) * | 2009-03-13 | 2014-07-02 | 株式会社日立情報通信エンジニアリング | 燃料電池電源システムおよびその制御方法 |
US20140023944A1 (en) * | 2011-03-31 | 2014-01-23 | Panasonic Corporation | Fuel cell system and method of operating same |
US9812722B2 (en) * | 2013-04-16 | 2017-11-07 | Nissan Motor Co., Ltd. | Fuel cell system and control method for fuel cell system |
JP6292405B2 (ja) * | 2014-11-14 | 2018-03-14 | トヨタ自動車株式会社 | 燃料電池システム及び燃料電池システムの運転制御方法 |
JP6112100B2 (ja) | 2014-11-14 | 2017-04-12 | トヨタ自動車株式会社 | 燃料電池システム |
KR101836611B1 (ko) | 2016-04-07 | 2018-03-09 | 현대자동차주식회사 | 연료전지차량의 시동 제어방법 |
JP6376184B2 (ja) * | 2016-07-21 | 2018-08-22 | トヨタ自動車株式会社 | 燃料電池システムおよび車両 |
JP6935757B2 (ja) * | 2018-01-30 | 2021-09-15 | トヨタ自動車株式会社 | 燃料電池システム |
JP6922765B2 (ja) | 2018-01-30 | 2021-08-18 | トヨタ自動車株式会社 | 燃料電池システム |
JP6992605B2 (ja) * | 2018-03-07 | 2022-01-13 | トヨタ自動車株式会社 | 燃料電池システム |
JP7134160B2 (ja) * | 2019-12-18 | 2022-09-09 | 本田技研工業株式会社 | ガス制御装置及びガス制御方法 |
US11721818B2 (en) * | 2020-01-16 | 2023-08-08 | Toyota Jidosha Kabushiki Kaisha | Fuel cell system and method of controlling fuel cell system |
JP7276249B2 (ja) * | 2020-01-16 | 2023-05-18 | トヨタ自動車株式会社 | 燃料電池システムおよび燃料電池の制御方法 |
CN111613813B (zh) * | 2020-05-26 | 2021-09-10 | 东风汽车集团有限公司 | 一种燃料电池空气供给系统及其泄压控制方法 |
CN111613815B (zh) * | 2020-05-26 | 2021-09-10 | 东风汽车集团有限公司 | 一种燃料电池氢气循环系统及其控制方法 |
CN113937324B (zh) * | 2021-08-30 | 2022-12-20 | 东风汽车集团股份有限公司 | 一种燃料电池车辆空气泄露诊断方法及装置 |
DE102022128711A1 (de) | 2022-10-28 | 2024-05-08 | MTU Aero Engines AG | Flugzeug-Brennstoffzellen-Antrieb |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001003215A1 (en) * | 1999-06-30 | 2001-01-11 | Ballard Power Systems Inc. | Method and apparatus for increasing the temperature of a fuel cell with polymer electrolyte |
JP2002313388A (ja) * | 2001-04-10 | 2002-10-25 | Honda Motor Co Ltd | 燃料電池の制御方法と燃料電池電気車両 |
JP2003288926A (ja) * | 2002-03-27 | 2003-10-10 | Nissan Motor Co Ltd | 燃料電池システムの制御装置 |
JP2003317765A (ja) * | 2002-04-19 | 2003-11-07 | Nissan Motor Co Ltd | 燃料電池制御システム |
JP2004030979A (ja) * | 2002-06-21 | 2004-01-29 | Equos Research Co Ltd | 燃料電池システム |
JP2004172027A (ja) * | 2002-11-22 | 2004-06-17 | Toyota Motor Corp | 燃料電池システム |
JP2006073501A (ja) * | 2004-08-05 | 2006-03-16 | Denso Corp | 燃料電池システム |
JP2006286513A (ja) * | 2005-04-04 | 2006-10-19 | Denso Corp | 燃料電池システム |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5366821A (en) * | 1992-03-13 | 1994-11-22 | Ballard Power Systems Inc. | Constant voltage fuel cell with improved reactant supply and control system |
JP2000331693A (ja) * | 1999-05-19 | 2000-11-30 | Asahi Glass Co Ltd | 固体高分子型燃料電池 |
US6461751B1 (en) * | 1999-12-06 | 2002-10-08 | Ballard Power Systems Inc. | Method and apparatus for operating a fuel cell |
JP3904191B2 (ja) * | 2001-10-23 | 2007-04-11 | 本田技研工業株式会社 | 排出燃料希釈器および排出燃料希釈式燃料電池システム |
AT411943B (de) * | 2002-05-06 | 2004-07-26 | Vaillant Gmbh | Verfahren zum betreiben einer brennstoffzellenanlage |
DE60321109D1 (de) * | 2002-10-31 | 2008-07-03 | Matsushita Electric Ind Co Ltd | Verfahren zum Betrieb eines Brennstoffzellensystems und Brennstoffzellensystem |
JP4904661B2 (ja) | 2002-11-21 | 2012-03-28 | 株式会社デンソー | 燃料電池システム |
JP4486353B2 (ja) * | 2003-12-05 | 2010-06-23 | パナソニック株式会社 | 水素生成装置および水素生成装置の作動停止方法並びに燃料電池発電装置 |
JP2005174645A (ja) * | 2003-12-09 | 2005-06-30 | Nissan Motor Co Ltd | 燃料電池システム |
JP4593311B2 (ja) * | 2005-02-24 | 2010-12-08 | 三菱電機株式会社 | 燃料電池発電システム及びその停止方法 |
JP4945968B2 (ja) * | 2005-09-02 | 2012-06-06 | 株式会社デンソー | 燃料電池システム |
JP4905847B2 (ja) * | 2005-11-30 | 2012-03-28 | トヨタ自動車株式会社 | 燃料電池システム |
JP4905642B2 (ja) * | 2005-12-05 | 2012-03-28 | トヨタ自動車株式会社 | 燃料電池システム及び移動体 |
-
2007
- 2007-07-03 JP JP2007175150A patent/JP4905706B2/ja active Active
-
2008
- 2008-07-03 CN CN2008800141727A patent/CN101675550B/zh active Active
- 2008-07-03 DE DE112008001674.7T patent/DE112008001674B4/de active Active
- 2008-07-03 WO PCT/JP2008/062430 patent/WO2009005169A1/ja active Application Filing
- 2008-07-03 KR KR1020097027329A patent/KR101136497B1/ko active IP Right Grant
- 2008-07-03 US US12/600,953 patent/US8361667B2/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001003215A1 (en) * | 1999-06-30 | 2001-01-11 | Ballard Power Systems Inc. | Method and apparatus for increasing the temperature of a fuel cell with polymer electrolyte |
JP2002313388A (ja) * | 2001-04-10 | 2002-10-25 | Honda Motor Co Ltd | 燃料電池の制御方法と燃料電池電気車両 |
JP2003288926A (ja) * | 2002-03-27 | 2003-10-10 | Nissan Motor Co Ltd | 燃料電池システムの制御装置 |
JP2003317765A (ja) * | 2002-04-19 | 2003-11-07 | Nissan Motor Co Ltd | 燃料電池制御システム |
JP2004030979A (ja) * | 2002-06-21 | 2004-01-29 | Equos Research Co Ltd | 燃料電池システム |
JP2004172027A (ja) * | 2002-11-22 | 2004-06-17 | Toyota Motor Corp | 燃料電池システム |
JP2006073501A (ja) * | 2004-08-05 | 2006-03-16 | Denso Corp | 燃料電池システム |
JP2006286513A (ja) * | 2005-04-04 | 2006-10-19 | Denso Corp | 燃料電池システム |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102473938A (zh) * | 2009-07-30 | 2012-05-23 | 丰田自动车株式会社 | 燃料电池系统 |
US8927168B2 (en) | 2009-07-30 | 2015-01-06 | Toyota Jidosha Kabushiki Kaisha | Fuel cell system control during low efficiency operation |
Also Published As
Publication number | Publication date |
---|---|
JP4905706B2 (ja) | 2012-03-28 |
CN101675550A (zh) | 2010-03-17 |
DE112008001674T5 (de) | 2010-07-22 |
CN101675550B (zh) | 2013-09-04 |
KR20100010515A (ko) | 2010-02-01 |
DE112008001674B4 (de) | 2020-01-23 |
US20100159342A1 (en) | 2010-06-24 |
US8361667B2 (en) | 2013-01-29 |
KR101136497B1 (ko) | 2012-04-19 |
JP2009016117A (ja) | 2009-01-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4905706B2 (ja) | 燃料電池システム及びその制御方法 | |
US8691453B2 (en) | Fuel cell system | |
JP5120594B2 (ja) | 燃料電池システム及びその運転方法 | |
JP4844838B2 (ja) | 燃料電池システム | |
JP5007927B2 (ja) | 燃料電池システム | |
JP4993293B2 (ja) | 燃料電池システム及び移動体 | |
WO2007046545A1 (ja) | 燃料電池システム、アノードガス生成量推定装置及びアノードガス生成量の推定方法 | |
JP5757227B2 (ja) | 燃料電池システム及びその制御方法 | |
JP5229528B2 (ja) | 燃料電池システム | |
JP2008130442A (ja) | 燃料電池システム | |
JP2007141744A (ja) | 燃料電池システム | |
JP2008226595A (ja) | 燃料電池システム及びその制御方法 | |
JP2008103167A (ja) | 燃料電池システム | |
JP4831437B2 (ja) | 燃料電池システム及びその制御方法 | |
JP5142006B2 (ja) | 燃料電池システム | |
JP2010157426A (ja) | 燃料電池システム | |
JP5110347B2 (ja) | 燃料電池システムおよびその停止処理方法 | |
JP2013164938A (ja) | 燃料電池システム及びその運転方法 | |
JP2007317472A (ja) | 燃料電池システム |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200880014172.7 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08778011 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12600953 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 20097027329 Country of ref document: KR Kind code of ref document: A |
|
RET | De translation (de og part 6b) |
Ref document number: 112008001674 Country of ref document: DE Date of ref document: 20100722 Kind code of ref document: P |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 08778011 Country of ref document: EP Kind code of ref document: A1 |