WO2008059902A1 - Système de pile à combustible, procédé permettant de commander le système de pile à combustible et objet mobile - Google Patents
Système de pile à combustible, procédé permettant de commander le système de pile à combustible et objet mobile Download PDFInfo
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- WO2008059902A1 WO2008059902A1 PCT/JP2007/072137 JP2007072137W WO2008059902A1 WO 2008059902 A1 WO2008059902 A1 WO 2008059902A1 JP 2007072137 W JP2007072137 W JP 2007072137W WO 2008059902 A1 WO2008059902 A1 WO 2008059902A1
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- WIPO (PCT)
- Prior art keywords
- fuel cell
- voltage
- output voltage
- oxidizing gas
- catalyst activation
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 217
- 238000000034 method Methods 0.000 title claims description 53
- 239000003054 catalyst Substances 0.000 claims abstract description 113
- 230000004913 activation Effects 0.000 claims abstract description 27
- 238000001994 activation Methods 0.000 claims description 89
- 230000001590 oxidative effect Effects 0.000 claims description 83
- 230000008569 process Effects 0.000 claims description 37
- 238000012545 processing Methods 0.000 claims description 23
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 13
- 239000007800 oxidant agent Substances 0.000 claims description 7
- 230000004044 response Effects 0.000 claims description 4
- 241000256011 Sphingidae Species 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000009467 reduction Effects 0.000 abstract description 25
- 238000007254 oxidation reaction Methods 0.000 abstract description 11
- 230000003647 oxidation Effects 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 113
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 37
- 239000002737 fuel gas Substances 0.000 description 31
- 238000006722 reduction reaction Methods 0.000 description 29
- 239000001257 hydrogen Substances 0.000 description 25
- 229910052739 hydrogen Inorganic materials 0.000 description 25
- 230000008929 regeneration Effects 0.000 description 13
- 238000011069 regeneration method Methods 0.000 description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 230000007423 decrease Effects 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 8
- 239000012528 membrane Substances 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 6
- 238000010248 power generation Methods 0.000 description 6
- 230000003213 activating effect Effects 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000003487 electrochemical reaction Methods 0.000 description 4
- 229910052697 platinum Inorganic materials 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000875 corresponding effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- -1 underwater Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000003570 air Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000005518 polymer electrolyte Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- 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
- H01M8/04544—Voltage
- H01M8/04559—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- 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
- 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
- H01M8/04388—Pressure; Ambient pressure; Flow of anode 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
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04753—Pressure; Flow of fuel cell 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
- H01M8/04298—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
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/40—Combination of fuel cells with other energy production systems
- H01M2250/402—Combination of fuel cell with other electric generators
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/10—Applications of fuel cells in buildings
-
- 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
- Y02E60/10—Energy storage using batteries
-
- 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
Definitions
- the present invention relates to a fuel cell system, and more particularly to a control technique for a fuel cell system that can reliably interrupt a process of activating a catalyst layer of a fuel cell while avoiding overcharging of a power storage device.
- the output voltage of the fuel cell decreases as oxygen is adsorbed on the catalyst layer of the fuel cell.
- the supply of oxygen to the fuel cell is temporarily stopped, and the output voltage of the fuel cell is lowered to the reduction region of the catalyst layer to activate the catalyst layer of the fuel cell stack. Processing (ie reduction processing) was being performed.
- the supply of the oxidizing gas for example, air
- the output voltage of the twisted battery was controlled to the target reduction voltage value.
- the supply of the oxidizing gas for example, air
- the supply of the oxidizing gas for example, air
- a cross leak occurs in the electrolyte membrane of the fuel cell, and a force sword electrode (oxidation gas is generated from the anode electrode (electrode on the side where fuel gas is supplied)).
- the fuel gas (for example, hydrogen) leaks to the electrode on the supply side).
- the electrolyte of the fuel cell is made of a porous material in order to expand the contact area with the oxidizing gas or the fuel gas, there is a possibility that a cross leak may occur.
- the upper limit of the output voltage of the fuel cell is limited by voltage conversion means (for example, a converter) that can set the upper limit of the output voltage of the fuel cell.
- voltage conversion means for example, a converter
- Japanese Patent No. 4 6 9 7 9 discloses a low voltage battery for auxiliary machines constituting a hybrid fuel cell. A technique for effectively utilizing surplus power by charging surplus power, which increases with a voltage drop, to the battery at the time of catalyst activation processing of a fuel cell using a battery is disclosed.
- Japanese Patent Laid-Open No. 2 03-3-1 1 5 3 1 8 discloses a reduction reaction to oxygen by flowing a large current with a cell voltage of 0.6 V or less.
- the fuel gas for example, hydrogen
- the fuel gas for example, hydrogen
- the cathode side in order to reduce the concentration of the fuel gas (eg hydrogen) in the exhaust gas.
- oxidizing gas for example, air
- the power generated by the fuel cell increases rapidly, and the power storage device Excessive power that cannot be charged will be generated. In particular, during the refresh, since the load device is stopped and the amount of power consumption is small, the power storage device may be overcharged.
- a fuel cell system that can reliably interrupt the process of activating the catalyst layer of the fuel cell while avoiding overcharging of the power storage device. It is aimed.
- a fuel cell system according to the present invention is a twisted battery system that performs catalyst activation processing by lowering the output voltage of a fuel cell, and performs the catalyst activation processing during the catalyst activation processing. When stopping the catalyst activation process, a process for returning the output voltage of the fuel cell to the standby voltage is performed, and after waiting until the oxidizing gas supply condition is satisfied, the oxidizing gas is supplied to the fuel cell.
- the fuel cell system control method of the present invention is a fuel cell system control method for performing catalyst activation processing by lowering the output voltage of the fuel cell, wherein the catalyst activation processing is performed during the catalyst activation processing.
- a step of determining whether or not to stop the catalyst activation process; a step of returning the output voltage of the fuel cell to a standby voltage when it is determined to stop the catalyst activation process; and an oxidizing gas supply condition And a step of waiting until it is satisfied, and a step of supplying an oxidizing gas to the fuel cell when the oxidizing gas supply condition is satisfied.
- the fuel cell system of the present invention includes a voltage conversion unit that changes an output voltage of the fuel cell in response to a voltage command value, a voltage detection unit that detects an output voltage of the fuel cell, and the voltage conversion unit.
- Control means for instructing the voltage command value, stop condition determining means for determining whether or not a catalyst activation process stop condition is satisfied, and an oxidizing gas for supplying an oxidizing gas to the force sword electrode of the twisted battery Supply means; and when the catalyst activation process is determined to be satisfied by the stop condition determination means during execution of the catalyst activation process, the control means converts the voltage conversion The standby voltage is commanded to the command as a command value, and standby is performed until the oxidizing gas supply condition is satisfied from the command. Then, control is performed such that the oxidizing gas is supplied to the power sword electrode side of the fuel cell.
- the timing for stopping the catalyst activation process may be after the oxidant gas supply is stopped and during the voltage drop period until the reduction target voltage is reached or during the voltage maintenance period after the reduction target voltage is reached. .
- the oxidizing gas supply condition is that a predetermined time elapses from the time when the process for returning the output voltage of the fuel cell to the standby voltage is performed.
- the output voltage of the fuel cell rises sufficiently by waiting for a certain time corresponding to the rising characteristic of the output voltage of the fuel cell that has been grasped in advance. It is possible to control so as not to generate power.
- the oxidizing gas supply condition is that the output voltage of the fuel cell reaches a predetermined voltage value.
- the predetermined voltage value is set to a voltage value that can be grasped by an experiment or the like that does not cause the output power of the fuel cell to rise rapidly even when oxidant gas is supplied, it will be on the cathode side of the fuel cell.
- the timing at which the output voltage of the fuel cell does not rapidly increase even when the oxidizing gas is supplied can be surely known.
- condition for stopping the catalyst activation process is that the occurrence of a cross leak is detected in the fuel cell.
- a cross leak is detected in the fuel cell (for example, the anode side), and a large amount of oxidizing gas (for example, air) necessary for reducing the concentration of the fuel gas (for example, hydrogen) in the exhaust gas is supplied.
- oxidizing gas for example, air
- the concentration of the fuel gas for example, hydrogen
- the cross leak occurs even if fuel gas (for example, hydrogen gas) leaks from the anode side to the cathode side in the electrolyte membrane, from the cathode side to the anode side. It may be leakage of oxidizing gas (eg air) to the fuel cell It may be a fuel gas leak.
- fuel gas for example, hydrogen gas
- oxidizing gas eg air
- the occurrence of the cross leak is detected when the pressure of the fuel gas on the anode electrode side of the fuel cell decreases by a predetermined amount.
- Cross-leakage can occur when fuel gas leaks from the anode side to the force-sword pole side. By configuring in this way, it is possible to reliably detect the occurrence of cross-leakage in the fuel cell. Can do.
- the amount of oxidizing gas supplied to the cathode side of the fuel cell is an amount that allows the oxidizing gas to be supplied to all the power electrode sides of the fuel cell.
- the fuel cell system of the present invention further includes a power storage device, and is configured to start the catalyst activation process on the condition that the power storage device is in a state in which charging can be performed with a predetermined amount of power or more. Also good.
- surplus power generated by the power generation process of the fuel cell can be recharged by charging the power storage device (eg, battery, secondary battery, capacitor, etc.). If the catalyst activation process is started on the condition that a certain amount of electric power can be charged in the power storage device, it is possible to sufficiently charge the surplus power generated slightly due to the interruption of the catalyst activation process.
- the power storage device eg, battery, secondary battery, capacitor, etc.
- the present invention is also a mobile object including the fuel cell system.
- the fuel cell system ⁇ of the present invention can be applied to electric vehicles and other mobile bodies (land, water, underwater, and air), and the power storage device mounted on the mobile body by the action of the present invention. This is because it is suitable for suppressing overcharge.
- FIG. 2 is a configuration diagram showing the overall configuration of the fuel cell system according to the embodiment of the present invention. .
- FIG. 3 is a chart showing the relationship between the output voltage of the fuel cell and the control operation of the catalyst layer regeneration process over time in the catalytic fuel cell system according to Embodiment 1 of the present invention.
- FIG. 4 A chart showing the relationship between the output voltage of the fuel cell and the control operation of the catalyst layer regeneration process over time in the catalytic fuel cell system according to Embodiment 1 of the present invention.
- FIG. 5 is a flowchart showing the operation centering on the catalyst layer regeneration process of the control unit 5 in the fuel cell system according to Embodiment 1 of the present invention.
- FIG. 6 A flow chart showing the operation centering on the catalyst layer regeneration process of the control unit 5 in the fuel cell system according to Embodiment 2 of the present invention.
- the present invention is applied to a hybrid fuel cell system mounted on an electric vehicle.
- the following embodiments are merely examples of application modes of the present invention and do not limit the present invention.
- FIG. 1 is a functional block diagram illustrating the principle of the present invention.
- the present invention is a fuel cell system that performs catalyst activation processing by lowering the output voltage Vfc of the fuel cell 100, and includes voltage conversion means 10 1, voltage detection means 1 0 2. , Control means 1 0 3, stop condition determination means 1 0 4, and oxidizing gas supply means 1 0
- the voltage conversion means 1 0 1 is a functional block that changes the output voltage VfG of the fuel cell 1 0 0 corresponding to the voltage command value CvfG supplied from the control means.
- the voltage converting means 101 is realized by a device that can forcibly maintain the output terminal voltage of the fuel cell at a constant voltage, such as a DC-DC converter.
- the voltage detection means 1 0 2 is a functional block that detects the output voltage VfG of the fuel cell.
- the voltage detection means 102 is based on other parameters correlated to the output voltage of the fuel cell, in addition to a device that can directly detect the output voltage of the fuel cell, such as a voltage sensor.
- a device (such as a computer) that estimates the output voltage of the fuel cell is also included.
- the control means 10 3 is a functional block that commands the voltage command means Cvfc to the voltage conversion means 1 0 1.
- the control means 103 is realized by a computer executing a software program for executing the control method of the present invention.
- the stop condition determination means 104 is a functional block that determines whether or not a stop condition for the catalyst activation process is satisfied.
- the condition for stopping the catalyst activation treatment is, for example, that a cross leak occurs in the electrolyte membrane of the fuel cell 100 and the fuel gas (for example, hydrogen) from the anode (fuel gas) electrode side to the power sword (oxidized gas) electrode side May leak.
- the stop condition determination means 10 4 is used when the pressure drop of the fuel gas on the anode side is a predetermined amount or more, or when the predetermined concentration of fuel gas is detected directly on the cathode side. It can be determined that it has been established.
- the configuration of the stop condition determination means 10 4 varies depending on the cross leak detection method. For example, the pressure drop of the fuel gas can be detected not only by the pressure sensor provided in the fuel gas supply system but also by the computer recognizing the pressure drop from the parameter corresponding to the pressure change of the fuel gas. .
- the oxidizing gas supply means 105 is a functional block that supplies oxidizing gas (air) A i r to the power sword pole of the fuel cell 100.
- the oxidizing gas supply means 105 is, for example, a part or the whole of a device capable of controlling the supply amount of the oxidizing gas A i r, and can be exemplified by an air conditioner.
- the control means 10 when performing the catalyst activation process, determines that the stop condition of the catalyst activation process is satisfied by the stop condition determination means 10 4, the voltage conversion means 1 0
- the command voltage CvfG is commanded as the command value CvfG, not the standby voltage, that is, the low voltage for the catalyst activation process, but the voltage to be maintained for the fuel cell operation.
- the control means 10 03 waits until the oxidizing gas supply condition is satisfied from the command, and then the fuel
- the oxidizing gas supply means 105 is controlled so that the oxidizing gas Air is supplied to the power sword pole side of the battery 10 O.
- Embodiment 1 relates to an example of a control method of a fuel cell system when the oxidant gas supply condition is that a fixed time elapses.
- FIG. 2 is a configuration diagram showing the overall configuration of the fuel cell system according to the embodiment of the present invention.
- the fuel cell system according to Embodiment 1 includes an anode gas supply system 1 that supplies hydrogen gas, which is an anode gas, to a fuel cell 100 that will be described later, and a twisted battery cell 100. It comprises a cathode gas supply system 2 that supplies air, which is a powerful sword gas, a power system 4, and a control unit 5 (control means) that performs control necessary for activation of the catalyst layer according to the present invention. .
- the fuel cell 100 has a stack structure in which a plurality of cells (single cells) are stacked. Each cell has a structure in which a power generator called MEA (Membrane Electrode Assembly) is sandwiched between a pair of separators having a flow path of hydrogen gas, air, and cooling water.
- MEA has a structure in which a polymer electrolyte membrane is sandwiched between two electrodes, an anode electrode and a cathode electrode.
- the anode electrode is configured by providing a fuel electrode catalyst layer on a porous support layer,
- the force sword electrode is formed by providing a hornworm medium layer for an air electrode on a porous support layer.
- a phosphoric acid type, a molten carbonate type, or the like can be used as the form of the fuel cell.
- the catalyst layer of these electrodes is configured by adhering platinum particles, for example, and a catalyst activation process for removing oxides adhering to the platinum particles by the power generation operation of the fuel cell is related to the present invention.
- the fuel cell 100 0 undergoes a reverse reaction of water electrolysis, and hydrogen gas, which is anode gas, is supplied from the fuel gas supply system 1 to the anode (cathode) electrode side.
- the cathode (anode) is supplied with air, which is a power sword gas containing oxygen, from the power sword gas supply system 2.
- a reaction such as equation (1) occurs on the anode electrode side
- a reaction such as equation (2) occurs on the force sword electrode side to circulate electrons and flow current.
- Anode gas supply system 1 detects hydrogen gas cross-leakage by measuring hydrogen tank 10 as a hydrogen gas supply source, anode gas supply channel 11, anode offgas discharge channel 12, and gas pressure of hydrogen gas And a fuel gas pressure sensor 13.
- it is equipped with a hydrogen pump for circulating hydrogen gas, a main valve and a regulating valve, a shutoff valve, a check valve, a gas-liquid separator, etc. necessary for hydrogen gas management control. It's okay.
- the hydrogen tank 10 is filled with high-pressure hydrogen gas.
- a hydrogen supply source various types such as a hydrogen tank using a hydrogen storage alloy, a hydrogen supply mechanism using a reformed gas, a liquid hydrogen tank, and a liquefied fuel tank can be applied in addition to a high-pressure hydrogen tank.
- the anode gas supply path 11 is a pipe for supplying high-pressure hydrogen gas, and may be provided with a pressure regulating valve (regulator) or the like (not shown).
- the hydrogen gas supplied from the anode gas supply path 11 is supplied to the anode electrode side of each single cell via the manifold in the fuel cell 100, and after an electrochemical reaction occurs at the anode of the MEA, the anode gas is supplied.
- Anode off gas discharge path 1 2 fuel A circulation path may be formed as a path through which the van der gas discharged from the battery 100 is discharged. In order to form the circulation path, the anode off-gas is again returned to the anode gas supply path 11 via a check valve and an ejector (not shown).
- the force sword gas supply system 2 includes a compressor 20, a force sword gas supply passage 21, and a cathode off gas discharge passage 22.
- a humidifier for controlling the humidity of air which is a powerful sword gas
- a gas-liquid separator that removes the force sword off gas (air off gas)
- an anode off gas for mixing with the force sword off gas.
- a diluter, a silencer, etc. may be provided.
- the compressor 20 is related to the oxidizing gas supply means of the present invention, compresses the air taken in from an air cleaner or the like, changes the air amount or air pressure, and supplies it to the power sword pole side of the fuel cell 100. It is.
- the air supplied from the power sword gas supply path 2 "I is supplied to the power sword electrode side of each single cell via the manifold as in the case of hydrogen gas, and is subjected to an electrochemical reaction at the MEA cathode.
- the power sword-off gas discharged from the fuel cell 100 is diluted with the anode off-gas and then discharged.
- Power system 4 consists of battery 40, DC-DC converter 41, traction inverter 4 2, traction motor 4 3, auxiliary machine inverter 4 4, high voltage auxiliary machine 4 5, battery computer 4 6, current sensor 4 7
- the voltage sensor 48 according to the voltage detection means of the present invention for measuring the output voltage of the fuel cell, the backflow prevention diode 49, and the like are provided.
- the battery 40 is a chargeable / dischargeable power storage device (secondary battery).
- secondary battery various types of secondary batteries such as a nickel hydrogen battery can be used.
- a chargeable / dischargeable power storage device such as a capacitor can be used.
- the battery 40 can output a high voltage by stacking a plurality of battery units that generate power at a constant voltage and connecting them in series.
- the battery computer 46 is provided at the output terminal of the battery 40 and can communicate with the control unit 3. Battery computer 4 6 charging battery 4 0 The status is monitored and the battery is maintained within an appropriate charging range that does not lead to overcharge or overdischarge, and if the battery becomes overcharged or overdischarged, the controller 3 is notified. .
- the DC-DC converter 41 is related to the voltage conversion means of the present invention, and corresponds to the power conversion means of the present invention in which the voltage is boosted Z down between the primary side and the secondary side to distribute power. It is.
- the output voltage of the primary side battery 40 is boosted to the output voltage of the secondary side fuel cell 100, and power is supplied to load devices such as the traction motor 43 and the high voltage auxiliary machine 45. To do.
- surplus power of the fuel cell 100 and regenerative power from the load device are stepped down and passed on the secondary side in order to charge the battery 40 on the primary side.
- Traction converter 42 converts DC current into three-phase AC and supplies it to traction motor 43.
- the traction motor 43 is a three-phase motor, for example, and is a main power source of an automobile on which the fuel cell system is mounted.
- the auxiliary machine inverter 4 4 is a DC / AC conversion means for driving the high voltage auxiliary machine 45.
- the high-pressure auxiliaries 45 are various motors necessary for the operation of the fuel cell system such as the compressor 20, the hydrogen pump, and the cooling system motors.
- the control unit 5 is a control means of the present invention, and is composed of two control units, one is the HV control unit 51 that controls the hybrid running, and the other is the FC that controls the operation of the fuel cell.
- Control unit 52 Each control unit includes a CPU (central processing unit), RAM, ROM, interface circuit, and the like as a general-purpose computer. By communicating with each other, the entire system can be controlled.
- the HV control unit 51 controls the electric system 4 by sequentially executing a software program stored in the built-in ROM or the like.
- FC controller 52 is stored in built-in ROM etc.
- the method for activating the catalyst layer of the present invention in the fuel cell system It is possible to execute a part of.
- FIG. 3 is a chart showing the relationship between the output voltage of the fuel cell and the control operation of the catalyst layer regeneration process over time in the catalytic fuel cell system according to Embodiment 1 of the present invention.
- the control operation of the catalyst layer regeneration process shown in Fig. 3 shows a case where the conditions for stopping the activation process of the catalyst layer are not satisfied and are executed as they are.
- the catalyst layer regeneration process (catalyst layer activation process) shown in FIG. 3 is normally performed under the condition that the battery 40, which is a power storage device, is in a state in which it can be charged with a predetermined amount of power or more. Yes, the determination of this condition and the control of the subsequent activation processing are performed by the control unit 5.
- the secondary voltage of the converter can be changed according to the voltage command value to the converter, but since it is connected in parallel with the output terminal of the fuel cell, the target secondary voltage set in the converter If the battery output voltage does not reach, the converter secondary voltage will not reach the target secondary voltage. On the other hand, if the output voltage of the fuel cell is higher than the target secondary voltage of the converter, the output voltage of the fuel cell is forced to the target secondary voltage. Regulated and the current value increases according to the I-V characteristics of the fuel cell. That is, the secondary voltage of the comparator defines the upper limit value of the output voltage of the fuel cell.
- the output voltage of the fuel cell 100 is the standby voltage V h.
- the oxidizing gas is suddenly supplied and the power generation state based on the normal I-V characteristic is restored.
- the output power may rise rapidly, and if this phenomenon is not prevented, the battery 40 will be overcharged.
- the operation of the control unit 5 in the catalyst activation process of the present embodiment will be described focusing on the operation when the catalyst activation process is stopped.
- FIG. 4 is a chart showing the relationship between the output voltage of the fuel cell and the control operation of the catalyst layer regeneration process over time in the catalytic fuel cell system according to Embodiment 1 of the present invention.
- FIG. 5 is a flowchart showing an operation centering on the catalyst layer regeneration process of the control unit 5 in the fuel cell system according to Embodiment 1 of the present invention.
- the control operation of the catalyst layer regeneration process shown in Fig. 4 and Fig. 5 shows the case where the condition for stopping the activation process of the catalyst layer was established halfway and reached the stop.
- the start timing and the stop timing of the catalyst activation process are defined by the internal timer of the control unit 5.
- a timer that measures a period T 0 that is started at time t 0 and until the output voltage of the fuel cell 100 reaches the reduction target voltage at time tr Called Imah TOj is the timer T1
- the catalyst activation process interface / ⁇ period T 2 The timer that measures is timer T2.
- the catalyst activation process is not performed during the interval period of the catalyst activation process, that is, until the period T 2 indicated by the timer T 2 has elapsed (step S2ZNO), and the control unit 5 Is a command signal C c that indicates the voltage command value to the converter 41 for normal operation.
- N v is kept at the standby voltage V h which is the target voltage in the normal operation mode (step S 1).
- the standby voltage Vh is also referred to as a high voltage avoidance voltage in the sense of an upper limit value that the output voltage of the fuel cell 100 does not want to increase any more from the standpoint of improving durability.
- step S 3 when the period T 2 measured by the timer T 2 arrives at time t 0 in step S 2 (YES), in step S 3, the control unit 5 stops the timer T 2, and at the same time, step S 4 Then, the control unit 5 sends to the compressor 20 a command signal C COMP for stopping the driving of the compressor 20 that supplies the oxidizing gas (for example, air) output to the compressor 20. As a result, the driving of the compressor 20 is stopped, and the active supply of oxidizing gas through the oxidizing gas supply system 2 is stopped.
- step S5 the control unit 5 sets the time period TO until the output voltage of the fuel cell 100 reaches the reduction target voltage in the timer TO, and starts the time measurement by the timer TO. Then, the command signal C CONV which is a voltage command value to the converter 41 is gradually decreased linearly so as to conform to a predetermined response characteristic.
- the command signal C CONV which is a voltage command value to the converter 41 is gradually decreased linearly so as to conform to a predetermined response characteristic.
- the above processing causes the output voltage of the fuel cell 100 to increase linearly as shown in FIG. 4 due to the gradual decrease of the secondary voltage of the converter 41 and the consumption of oxidizing gas. I will go down. That is, as shown in FIG. 4, the output voltage of the fuel cell 100 (secondary voltage of the converter 41) gradually decreases, and the reduction target voltage V r at time tr when the period T 0 has elapsed from time t 0. To reach. This voltage is applied to the catalyst layer completely from the oxidation reaction region. Is experimentally grasped as the voltage entering the reduction reaction region. Under normal conditions, the reduction of the catalyst layer is promoted by maintaining the reduction target voltage Vr.
- step S7 the control unit 5 verifies whether or not the condition for interrupting the refresh is satisfied. If yes (YES), the process moves to step S10, and if the condition for interrupting refresh is not satisfied (NO), the process proceeds to step S8.
- One of the conditions that should be interrupted for refreshing is the case where there is a notification of the cross leak detection signal S p from the fuel gas pressure sensor 13 that detects the cross leak of the fuel gas (hydrogen). Is a condition to be interrupted.
- condition for which refresh should be interrupted for example, an accelerator operation or the like can be monitored and set as a condition.
- the detection of fuel gas leakage from such a concentration sensor can be set as a condition for interrupting refreshing. It is.
- step S8 the control unit 5 verifies whether or not the time (time period TO) that elapses until the time measured by the timer TO reaches the reduction target voltage Vr has been reached. If the time elapsed until reaching the voltage V r (period TO) has not yet been reached (NO), return to step S6, and the time elapsed until the time measured by the timer TO reaches the reduction target voltage V r (period TO) ) Has been reached (YES), go to step S9.
- step S 9 the control unit 5 stops the timer TO, performs control necessary for the activation process under the reduction region of the catalyst layer of the fuel cell 100, and finishes the process (from this Bar period T 2)).
- the converter 4 "command signal to the I C C. Reduction target electric voltage command value by NV
- the output voltage of the fuel cell 100 can be fixed at the reduction target voltage Vr, and the reduction reaction in the catalyst layer can be promoted to activate the catalyst layer. Since is not a characteristic process of the present invention, other well-known methods may be used.
- the amount of generated current increases and the amount of generated power also rises. Therefore, the surplus power generated by the power generation of the fuel cell 100 is hybridized to the converter 41 through the converter 41. It is output to the primary side and the battery 40 is charged.
- step S 1 the control unit 5 sends a command signal C CON v that indicates the voltage command value to the converter 4 1 to the target of the normal operation mode.
- a command signal C CON v that indicates the voltage command value to the converter 4 1 to the target of the normal operation mode.
- V h the standby voltage
- control unit 5 sets a waiting period T 1 from the time when the condition for stopping the catalyst activation process is reached (that is, time t 1) until the air supply is performed to the timer T 1, and the timer T 1 Start the timing by (Step S 1 1).
- the standby period T 1 set in the timer T 1 is the output of the fuel cell 100 at the time when the standby voltage V h and the condition for stopping the catalyst activation process are reached (ie, time t 1). It can be obtained as an experimental value according to the difference from the voltage (ie, the drop from the standby voltage).
- the standby period T1 the supply of the oxidizing gas to the fuel cell 100 is cut off, but the fuel cell 100 can increase the output voltage by the residual air.
- the output voltage of the fuel cell 100 reaches the standby voltage Vh at time t2, but in the present invention, in general, the output voltage of the fuel cell 100 is It is not always necessary to reach the standby voltage Vh at time t2, and it may be lower than the standby voltage Vh.
- the control unit 5 determines whether or not the waiting period T 1 from when the time measured by the timer T 1 reaches the condition for stopping the catalyst activation process (that is, from time t 1) until the air is supplied is determined. Wait until the time T 1 reaches the condition for stopping the catalyst activation process (ie, time t 1) and wait until the air is supplied T 1 When the time measured by the timer T 1 reaches the condition for performing the catalyst activation process (that is, the time t 1) until the waiting period T 1 from when the air is supplied (YES) step
- step S 1 3 the control unit 5 stops the timer T 1.
- step S 1 4 the process proceeds to step S 1 4 to command execution of air blow. That is, the control unit 5 sends a command signal C COMP for resuming the operation of the compressor 20 to the compressor 20.
- oxidizing gas for example, air
- the output voltage of the fuel cell 100 does not exceed the standby voltage V h. The range can be maintained.
- the amount of oxidizing gas supplied to the power sword electrode of the fuel cell 100 is determined by the fuel cell 1
- the amount is set such that the oxidizing gas can be supplied to all cathode electrodes of 0 0.
- step S 15 simultaneously with the issuance of the air blow execution command described above, the timer T 2 for measuring the interval period T 2 until the next catalyst activation process is started, and the process ends (from this, the interval Enter period T2).
- the first embodiment has the following advantages.
- the standby state for setting the upper limit of the output voltage to the converter 41 for the time being It only commands the voltage Vh, not the supply of oxidizing gas.
- the command to execute the air blow that is, when the command signal C COMP that restarts the operation of the compressor 20 is sent to the compressor 20
- the output voltage of the fuel cell 1 0 0 is raised to near the standby voltage V h Therefore, it is possible to avoid the occurrence of trouble that the output voltage of the fuel cell 10 0 suddenly rises due to the execution of air blow and the battery 40 is overcharged.
- control unit 5 operates the timer to detect the processing timing.
- the actual output voltage of the fuel cell is detected to detect the processing timing.
- the system configuration in the second embodiment is the same as the configuration in the first embodiment as shown in FIG.
- FIG. 6 is a flowchart showing an operation centering on the catalyst layer regeneration process of the control unit 5 in the fuel cell system according to Embodiment 2 of the present invention.
- the control unit 5 periodically monitors the output voltage of the fuel cell 100 (secondary voltage of the converter 41) detected by the voltage sensor 48. Suppose you are.
- the same steps as those in the first embodiment are denoted by the same step numbers.
- step S1 the control unit 5 sends a command signal C CONV for instructing a voltage command value to the converter 41 to a standby voltage that is a target voltage in the normal operation mode for normal operation. Continue to maintain V h.
- step S 21 the control unit 5 determines whether or not the catalyst activation process has been performed.
- the catalyst activation process is periodically performed every predetermined interval period T4, the passage of time of the internal timer T2 is used as an opportunity for the catalyst activation process.
- the catalyst activation process is not necessarily performed periodically. This is because the oxide formation amount of the catalyst varies depending on the state of use. For example, when a large amount of oxide is formed on the catalyst, the output of the cell decreases. In other words, the output cannot be taken out according to the I-V characteristic originally possessed by the twisted battery. Therefore, even if the output voltage of the fuel cell 100 is set to a predetermined voltage, if the amount of current that can actually be extracted does not reach the amount of current estimated from the I-V characteristics, catalyst activation is required. Can be determined. From the above, the control unit 5 monitors the operating state of the fuel cell 100 and the power generation status of the fuel cell under what conditions, and determines that catalyst activation is necessary when the predetermined condition is reached. It is possible to refuse.
- step S 21 If it is determined in step S 21 that the catalyst activation process is necessary (YES), the control unit 5 proceeds to step S 4, and in step S 4, the oxidizing gas (for example, air) that has been output to the compressor 20. ) Send command signal C COMP to compressor 20 to stop driving compressor 20 As a result, the driving of the compressor 20 is stopped, and the active supply of the oxidizing gas via the oxidizing gas supply system 2 is stopped.
- step S6 the control unit 5 gradually decreases the command signal C CONV that is a voltage command value to the converter 41 according to a predetermined response characteristic.
- the expected time from the start to the end of the voltage drop is measured by the timer T 0, but in the second embodiment, the direct fuel cell 100 0 is measured in step S 22.
- the output voltage is determined.
- the output voltage of the twisted battery 100 should reach the reduction target voltage V r by the time tr shown in FIG.
- step S7 the control unit 5 verifies whether or not the condition for interrupting the refresh is satisfied. If YES (YES), the process moves to step S10. If the condition for interrupting refresh is not satisfied (NO), the process proceeds to step S22.
- one of the conditions that should be interrupted for refreshing is the case where there is a notification of the cross leak detection signal Sp from the fuel gas pressure sensor 13 that detects the cross leak of the fuel gas (hydrogen). It is a condition to be interrupted.
- condition for which refresh should be interrupted for example, an accelerator operation or the like can be monitored and set as a condition.
- an accelerator operation or the like can be monitored and set as a condition.
- the detection of fuel gas leakage from such a concentration sensor can be set as a condition to interrupt refreshing. It is.
- step S 22 the control unit 5 monitors the output voltage of the fuel cell 100 based on the output voltage detection signal Se of the voltage sensor 48.
- step S23 it is verified whether or not the output voltage of the fuel cell 100 has reached the reduction target voltage. If the output voltage of the fuel cell 100 has not reached the reduction target voltage (NO), step S6 Returning to step S9, if the output voltage of the fuel cell 100 has reached the reduction target voltage (YES), the process proceeds to step S9.
- step S 9 the control unit 5 stops the timer 0 and performs control necessary for the activation process under the reduction region of the catalyst layer of the fuel cell 100, and ends the process (from this) Enter into the interval period T2).
- step S 1 the control unit 5 sends a command signal for instructing the voltage command value to the converter 41, and C CONV is the target voltage in the normal operation mode. Set the standby voltage to Vh.
- step S 24 the control unit 5 monitors the output voltage of the fuel cell 100 based on the output voltage detection signal S e of the voltage sensor 48.
- step S25 it is verified whether or not the output voltage of the fuel cell 100 has reached the standby voltage. If the output voltage of the fuel cell 100 has not reached the standby voltage (NO), step S25 is performed.
- step S 14 the process proceeds to step S 14 to command execution of air blow. That is, the control unit 5 sends a command signal C COMP for resuming the operation of the compressor 20 to the compressor 20 and ends the process (from this, the interval period T2 is entered).
- the amount of the oxidizing gas supplied to the power source electrode of the fuel cell 100 is set to an amount capable of supplying the oxidizing gas to all the power word electrodes of the fuel cell 100.
- FIG. 4 shows a case where the output voltage of the fuel cell 100 reaches the standby voltage V at time t2, but in the present invention, generally, the output voltage of the fuel cell 100 is However, it is not always necessary to reach the standby voltage Vh, and it may be lower than the standby voltage Vh.
- the control unit 5 detects the actual output voltage of the fuel cell 100 and moves to the next process instead of operating the timer. I knew it.
- the change in the output voltage of the fuel cell is affected by the amount of oxidizing gas remaining inside the actual fuel cell 100.
- Processing based on the output voltage of the fuel cell means that the processing timing is determined according to the actual amount of residual oxidant gas in the fuel cell. That is, according to the second embodiment, the catalyst activation process (including the stop process) can proceed at an appropriate timing according to the amount of residual air.
- the case where the output voltage of the fuel cell 100 is detected as in the second embodiment and the case where the processing timing is detected by a timer as in the first embodiment may be used in combination. That is, instead of detecting the output voltage of the fuel cell 100, any one or more of the timers T0 to T2 may be used.
- the present invention can be applied with various modifications other than the above embodiment.
- the supply amount of the oxidizing gas is controlled by controlling the driving of the lesser 20
- the hydrogen supply from the hydrogen tank 10 may be controlled in conjunction with this control.
- the supply amount of the oxidizing gas or the fuel gas may be controlled by controlling the opening / closing of the valves of the oxidizing gas supply system or the fuel gas supply system.
- the fuel cell system in each of the above embodiments can be applied to other moving bodies (land, water, water, and air) of an electric vehicle, or may be applied to a stationary system.
- the oxidation of the fuel cell after waiting for the output voltage of the fuel cell to rise above a predetermined voltage value is performed. Since the gas supply is resumed, the output voltage of the fuel cell rapidly rises due to the rapid supply of oxidizing gas in the output voltage suppression state where the output current of the fuel cell is relatively large. It is possible to avoid the phenomenon of overcharging the battery.
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Description
Claims
Priority Applications (3)
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CN200780042099XA CN101536231B (zh) | 2006-11-13 | 2007-11-08 | 燃料电池***、燃料电池***的控制方法及移动体 |
US12/280,062 US8465878B2 (en) | 2006-11-13 | 2007-11-08 | Fuel cell system, control method therefor, and movable object |
DE112007002673.1T DE112007002673B4 (de) | 2006-11-13 | 2007-11-08 | Steuerungsverfahren für ein Brennstoffzellensystem |
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JP2006306544A JP5062395B2 (ja) | 2006-11-13 | 2006-11-13 | 燃料電池システム |
JP2006-306544 | 2006-11-13 |
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WO2008059902A1 true WO2008059902A1 (fr) | 2008-05-22 |
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PCT/JP2007/072137 WO2008059902A1 (fr) | 2006-11-13 | 2007-11-08 | Système de pile à combustible, procédé permettant de commander le système de pile à combustible et objet mobile |
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US (1) | US8465878B2 (ja) |
JP (1) | JP5062395B2 (ja) |
KR (1) | KR101068200B1 (ja) |
CN (1) | CN101536231B (ja) |
DE (1) | DE112007002673B4 (ja) |
WO (1) | WO2008059902A1 (ja) |
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JP4577625B2 (ja) * | 2007-12-20 | 2010-11-10 | トヨタ自動車株式会社 | 燃料電池システム |
US10069160B2 (en) | 2016-07-27 | 2018-09-04 | GM Global Technology Operations LLC | Stack voltage control for recovery mode using boost converter |
CN109994755B (zh) * | 2019-03-26 | 2023-10-10 | 广东亚氢科技有限公司 | 一种燃料电池***及提高燃料电池***发电性能的方法 |
JP2021190306A (ja) * | 2020-05-29 | 2021-12-13 | トヨタ自動車株式会社 | 燃料電池システム |
CN113422090A (zh) * | 2021-05-12 | 2021-09-21 | 同济大学 | 一种pemfc氢气渗透电流与漏电电阻的检测方法与装置 |
Citations (3)
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JP2006128016A (ja) * | 2004-10-29 | 2006-05-18 | Aisin Seiki Co Ltd | 燃料電池システム |
JP2006185750A (ja) * | 2004-12-27 | 2006-07-13 | Toshiba Fuel Cell Power Systems Corp | 燃料電池発電システムの運転方法及び燃料電池発電システム |
JP2006236739A (ja) * | 2005-02-24 | 2006-09-07 | Mitsubishi Electric Corp | 燃料電池発電システム及びその停止方法 |
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JP4788018B2 (ja) * | 2000-06-08 | 2011-10-05 | トヨタ自動車株式会社 | 燃料電池用燃料補給システムおよび移動体 |
JP2003115318A (ja) | 2001-10-03 | 2003-04-18 | Mitsubishi Heavy Ind Ltd | 燃料電池の運転装置及び方法 |
JP4904661B2 (ja) * | 2002-11-21 | 2012-03-28 | 株式会社デンソー | 燃料電池システム |
JP4182732B2 (ja) | 2002-11-22 | 2008-11-19 | トヨタ自動車株式会社 | 燃料電池システム、およびこれを搭載した移動体、および燃料電池システムの制御方法 |
JP4742501B2 (ja) * | 2004-02-17 | 2011-08-10 | 日産自動車株式会社 | 燃料電池システム |
JP4605343B2 (ja) | 2004-05-31 | 2011-01-05 | 株式会社エクォス・リサーチ | 燃料電池の再生制御装置 |
US7758985B2 (en) * | 2005-12-21 | 2010-07-20 | American Power Conversion Corporation | Fuel cell sensors and methods |
-
2006
- 2006-11-13 JP JP2006306544A patent/JP5062395B2/ja not_active Expired - Fee Related
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2007
- 2007-11-08 CN CN200780042099XA patent/CN101536231B/zh not_active Expired - Fee Related
- 2007-11-08 US US12/280,062 patent/US8465878B2/en active Active
- 2007-11-08 WO PCT/JP2007/072137 patent/WO2008059902A1/ja active Application Filing
- 2007-11-08 DE DE112007002673.1T patent/DE112007002673B4/de not_active Expired - Fee Related
- 2007-11-08 KR KR1020097004367A patent/KR101068200B1/ko active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006128016A (ja) * | 2004-10-29 | 2006-05-18 | Aisin Seiki Co Ltd | 燃料電池システム |
JP2006185750A (ja) * | 2004-12-27 | 2006-07-13 | Toshiba Fuel Cell Power Systems Corp | 燃料電池発電システムの運転方法及び燃料電池発電システム |
JP2006236739A (ja) * | 2005-02-24 | 2006-09-07 | Mitsubishi Electric Corp | 燃料電池発電システム及びその停止方法 |
Also Published As
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JP2008123844A (ja) | 2008-05-29 |
KR101068200B1 (ko) | 2011-09-28 |
JP5062395B2 (ja) | 2012-10-31 |
US8465878B2 (en) | 2013-06-18 |
CN101536231B (zh) | 2011-10-05 |
DE112007002673T5 (de) | 2009-09-17 |
CN101536231A (zh) | 2009-09-16 |
DE112007002673B4 (de) | 2014-02-20 |
US20100227237A1 (en) | 2010-09-09 |
KR20090042290A (ko) | 2009-04-29 |
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