WO2009051252A1 - 燃料電池システム - Google Patents
燃料電池システム Download PDFInfo
- Publication number
- WO2009051252A1 WO2009051252A1 PCT/JP2008/068927 JP2008068927W WO2009051252A1 WO 2009051252 A1 WO2009051252 A1 WO 2009051252A1 JP 2008068927 W JP2008068927 W JP 2008068927W WO 2009051252 A1 WO2009051252 A1 WO 2009051252A1
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- WO
- WIPO (PCT)
- Prior art keywords
- fuel cell
- switch
- power
- turned
- cell system
- Prior art date
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Classifications
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- 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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04225—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during start-up
-
- 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
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04228—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during shut-down
-
- 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
- H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
-
- 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
- H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
- H01M8/04302—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during start-up
-
- 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
- H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
- H01M8/04303—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during shut-down
-
- 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
- H01M8/04552—Voltage of the individual fuel cell
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- 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
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- 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.
- a pump for supplying fuel gas in order to operate the fuel cell, a pump for supplying fuel gas, an air compressor for supplying oxidant gas, a cooling water circulation pump for controlling the temperature of the fuel cell, It has auxiliary equipment related to the fuel cell such as a sensor that detects the voltage, temperature, etc. of the fuel cell. When operating a fuel cell, it is necessary to supply power to these auxiliary machines.
- a fuel cell diagnostic device that measures the resistance of a fuel cell from an IG (ignition) on state and then supplies power to a motor (for example, JP 2005-332702, JP 2007) — 1 28778, JP 2004-1779003, JP 2003-45467, JP 2007-66643). For this reason, it is necessary to supply power to a sensor for measuring the resistance of the fuel cell while the IG is on.
- the power is supplied from a power source other than the fuel cell, for example, a power storage device such as a low voltage battery. Therefore, for example, as disclosed in the above-mentioned patent document, when the resistance of the fuel cell is measured in the IG-on state, if the time until the start switch-on (fuel cell start-up) is long, the A large amount of power, such as voltage batching, is consumed, and there is a risk that it will not be possible to sufficiently supply power to the auxiliary equipment when the fuel cell is started. for that reason, 7
- the present invention has been made to solve the above-described conventional problems, and an object of the present invention is to provide a technique for suppressing power consumption of a power storage device until the start of the fuel cell in the fuel cell system. .
- a fuel cell system of the present invention includes:
- the power supply from the power source to the fuel cell-related auxiliary device is reduced, so that the fuel cell-related auxiliary device consumes before starting the fuel cell. Power consumption is suppressed.
- the fuel cell-related auxiliary machine includes, for example, a pump for supplying fuel gas for operating the fuel cell, an air compressor for supplying oxidant gas, and for controlling the temperature of the fuel cell.
- This concept includes various auxiliary equipment such as a cooling water circulation pump and a sensor that detects the voltage, temperature, etc. of the fuel cell.
- the power supply to some of them may be stopped, or the power supply to all fuel cell-related accessories may be stopped. .
- the power supply is forcibly supplied from the power source to the fuel cell-related auxiliary equipment regardless of whether or not the first instruction is input. Is done. Therefore, power consumption from the power source is suppressed, and when it is necessary to supply power to the fuel cell-related auxiliary equipment, the second instruction is input to the power supply control unit to supply power from the outside. Electric power can be supplied from the power source provided in the fuel cell system without the need.
- the power supply control unit may determine that the first instruction is input when a state of the fuel cell system reaches a predetermined condition.
- the first instruction can be input when the power of the power source is reduced.
- a value indicating a power reduction of the power source for example, a voltage value of the power source, etc. may be set as the predetermined condition. In this way, when the fuel cell is actually started up, there is less shortage of power supply from the power source.
- the power supply control unit determines that the second instruction is input when an inspection device related to the fuel cell system is connected to the fuel cell system. Also good.
- the fuel cell-related auxiliary device is continuously supplied with predetermined power. Therefore, it is possible to perform inspections by supplying power from the power source without requiring external power supply.
- the power supply control unit may stop power supply to a fuel cell monitoring device that monitors the state of the fuel cell when the first instruction is input. Good.
- the fuel cell monitoring device detects the voltage, temperature, etc. of the single cells constituting the fuel cell stack, determines the state of each single cell, and determines the single cell in a bad state. It includes the concept of various devices that monitor the state of the fuel cell, such as a so-called cell monitor that outputs information to the fuel cell system. In this way, if you want to use the fuel cell monitoring device while stopping the power supply to the fuel cell monitoring device and suppressing the power consumption of the power source, Power can be supplied to the monitoring device. Therefore, even when the first instruction is input, the fuel cell can be checked using the fuel cell monitoring device.
- the power supply control unit may stop power supply to a fluid pump that supplies fluid to the fuel cell when the first instruction is input.
- the power source included in the fuel cell system is supplied to the fluid pump. Electric power can be supplied. Therefore, even if the first instruction is input, for example, the software of the inverter circuit for driving the fluid pump can be rewritten without supplying power from the external power source. .
- the power source may be a low voltage battery.
- the predetermined condition is that a predetermined time elapses from when the power supply to the fuel cell-related auxiliary device is instructed until the start of starting the fuel cell is instructed. It is good as well.
- the fuel cell system further includes a first operating element and a second operating element, and when the first operating element is turned on, the power supply instruction is issued, When the operation element 2 is turned on, an instruction to start the fuel cell may be issued.
- first operating element when the first operating element is turned on, the power supply instruction is issued, When the operation element 2 is turned on, an instruction to start the fuel cell may be issued.
- FIG. 1 is an explanatory diagram showing the configuration of the fuel cell system 100 of the first embodiment.
- Figure 2 is a flowchart showing the procedure for reducing power consumption when starting up the fuel cell system.
- Figure 3 is a flowchart showing the procedure for reducing power consumption when starting up the fuel cell system.
- FIG. 4 is a chart showing the on / off timing of each switch of the fuel cell system 100.
- FIG. 5 is an explanatory diagram showing the configuration of the fuel cell system 10 O A of the second embodiment.
- FIG. 6 is a flowchart showing the procedure for suppressing power consumption when starting up the fuel cell system 10 O A.
- FIG. 7 is a flowchart showing a procedure for suppressing power consumption when starting up the fuel cell system 100 A.
- FIG. 8 is a chart showing the on / off timing of each switch of the fuel cell system 100.
- FIG. 9 is an explanatory diagram showing the configuration of the fuel cell system 100 B according to the third embodiment.
- FIG. 10 is a flowchart showing a procedure for suppressing power consumption when the fuel cell system 100 B is started.
- Fig. 11 is a flowchart showing the procedure for reducing power consumption during startup of the fuel cell system 1 OB.
- FIG. 12 is a time chart showing the on / off timing of each switch of the fuel cell system 100.
- FIG. 1 is an explanatory diagram showing the configuration of the fuel cell system 100.
- the fuel cell system 100 is mounted on a vehicle.
- the fuel cell system 100 mainly includes a fuel cell stack 10, a pump 20, a cell monitor 24, a battery 30, a controller 40, and an input / output terminal 90.
- the pumps 20 in this embodiment correspond to the fluid pump in the claims
- the cell monitor 24 corresponds to the fuel cell monitoring device in the claims.
- the pumps 20 and the cell monitor 24 correspond to fuel cell-related auxiliary devices in the claims.
- the fuel cell stack 10 is formed by stacking a plurality of unit cells of a polymer electrolyte fuel cell.
- the fuel cell stack 10 generates electricity by an electrochemical reaction between hydrogen as a fuel gas and oxygen in the air as an oxidant gas.
- hydrogen is supplied to the anode of the twisted battery stack 10 from a hydrogen tank (not shown) filled with high-pressure hydrogen, and the compressed air compressed by the air compressor 25 is used as the fuel cell stack 1 Supplied to zero power sword.
- a hydrogen storage alloy or the like may be used.
- the pumps 20 include electrical equipment used to operate the fuel cell stack 10. Specifically, pumps 20 compress fuel air as oxidant gas and An air compressor 25 to be supplied to the tack 10, a hydrogen pump 26 to feed hydrogen as fuel gas from the hydrogen tank (not shown) to the fuel cell stack 10, and a fuel cell stack 10 A cooling water pump 2 7 for supplying cooling water for cooling to the fuel cell stack 10 and inverter circuits 2 1, 2 2, 2 3 for driving them are included.
- the cell monitor 24 measures the voltage, temperature, etc. of the single cells that make up the fuel cell stack 10, and notifies the controller 40 of information about the worst single cell, for example. Contributes to the control of stack 1 0.
- the battery 30 mainly supplies power to pumps 20, cell monitor 24, controller 40, sensor air conditioner 70 (described later), first group 60 (described later), etc. Supply.
- a 14 V battery is used as the battery 30.
- any power source other than the fuel cell stack 10 may be used, for example, a low voltage battery other than 14 V. It may be a chargeable / dischargeable power storage device such as a high-voltage secondary battery or a capacitor.
- the controller 40 is composed of an in-vehicle computer equipped with a microprocessor chip, and performs a function of controlling the overall operation of each element of the fuel cell system 100, particularly starting control of the fuel cell system 100. It has a function.
- the controller 40 includes, as control functions, a power system control module 41, an FC start command module 42, and a power consumption suppression module 43.
- the power supply system control module 41 controls the entire operation of the fuel cell system 100.
- the FC start command module 4 2 gives a start command to the pumps 20.
- FC is an abbreviation for Fue IC e II, and in this embodiment means fuel cell stack 10.
- the power consumption suppression module 4 3 controls the operation of the FC inverter switch 2 4 6 (described later) and the cell monitor switch 2 4 2 (described later) to reduce the power consumption until the start of the fuel cell stack 10. Suppress.
- the controller 40 has the above functions by executing a fuel cell control program corresponding to each module.
- the power consumption suppression module 43 in the present embodiment corresponds to the power supply control unit in the claims.
- the input / output terminal 90 is a terminal for connecting the scan tool 50.
- a so-called service person in charge of inspection or repair at a car dealer inspects a failure of the fuel cell stack 10 through the vehicle input / output terminal 90
- It is a diagnostic machine that performs communication.
- the scan tool 50 is connected to the input / output terminal 90, signals can be exchanged between the controller 40, the cell monitor 24, and the scan tool 50.
- the scan tool 50 in this embodiment corresponds to an inspection device in the scope of the request.
- the power supplied by the battery 30 is roughly divided into four groups.
- the first group 60 includes lighters, audios, navigation devices, etc. mounted on the vehicle.
- the first group 60 is so-called accessories.
- An accessory switch 60 2 is provided between the first group 60 and the battery 30.
- An operation part for turning on and off the accessory switch 6 0 2 is provided in the passenger compartment, and the driver can turn on and off the accessory switch 6 0 2 by operating the operation part. .
- the accessory switch 60 2 is turned on, power is supplied from the battery 30 to the first group 60, and a lighter or the like can be used.
- the second group 80 includes a controller 40 and a sensor 'air conditioner 70.
- the sensor is for detecting the state of each element in the fuel cell system 100, for example, a flow meter for fuel gas and oxidant gas supplied to the fuel cell stack 10 and for cooling water. Includes a thermometer.
- Air conditioners include fans, heaters, refrigerant circulation pumps, etc. used for air conditioning in the passenger compartment.
- An IG switch 40 2 is provided between the second group 80 and the battery 30.
- IG is an abbreviation for IG nition, originally meaning ignition of an internal combustion engine, fuel In the battery system 100, although it is not necessarily an appropriate term, for those skilled in the art, a ignition switch has been used for many years to mean a vehicle start switch. Therefore, here again, the term IG switch is used as it is in the sense of an operator as a vehicle start switch.
- An operation unit for turning on / off the IG switch 400 is provided in the passenger compartment, and the driver or the like can turn on / off the IG switch 400 by operating the operation unit.
- the I G switch 4 0 2 When the I G switch 4 0 2 is turned on, power is supplied from the battery 30 to the second group 80, the controller 40 is started, and the fuel cell control program is started. That is, the IG switch 40 2 is a switch for instructing activation of the vehicle control system, and is a switch that is first operated by a driver or the like when the vehicle is activated.
- the IG switch 4 0 2 When the IG switch 4 0 2 is turned on, power is supplied from the battery 30 to the sensor air conditioner 70.
- the IG switch 40 2 in this embodiment corresponds to the first operation element in the claims.
- a start switch 4 0 4 is provided between the controller 4 0 and the battery 3 0.
- An operation part for turning on and off the star switch 4 0 4 is provided in the passenger compartment, and a driver or the like can turn on or off the start switch 4 0 4 by operating the operation part. it can.
- Start switch 4 0 4 on Z-off signal is transmitted to controller 40, and when controller 40 detects that start switch 4 0 4 is on, FC start command module 4 2 functions to start FC start command.
- Signal 2 0 2 is output to pumps 20. That is, when the start switch 4 0 4 is turned on after the IG switch 4 0 2 is turned on, the pumps 20 are started on the premise that other necessary conditions are satisfied.
- the start switch 40 4 in this embodiment corresponds to the second operator in the claims.
- the third group is the above-described pumps 20, and an FC inverter switch 2 46 is provided between the pumps 20 and the battery 30.
- FC inverter series Unlike the above-mentioned accessory switch 6 0 2, IG switch 4 0 2, and start switch 4 0 4, the switch 2 4 6 is a function of the controller 40 power consumption suppression module 4 3 regardless of the driver's operation. Controlled by When the FC inverter switch 2 4 6 is turned on, power is supplied from the battery 30 to the inverter circuits 2 1, 2 2, and 2 3, and when it is turned off, the power supply is stopped.
- the fourth group is Cell Monitor 24.
- a cell monitor switch 2 4 2 is provided between the cell monitor 24 and the battery 30.
- the cell monitor switch 2 4 2 is also controlled by the function of the power consumption suppression module 4 3 of the controller 40 regardless of the operation of the driver or the like, like the FC inverter switch 2 4 6 described above.
- the cell monitor switch 2 4 2 is turned on, power is supplied to the cell monitor 24 from the battery 30, and when it is turned off, the power supply is stopped.
- FIG. 4 is a time chart showing the on / off timing of each switch of the fuel cell system 100.
- the horizontal axis shows the time when the origin is shared, and the vertical axis shows on / off of each switch.
- the driver when starting the fuel cell system 100, the driver first operates the operation part of the IG switch 4 0 2 to turn on the IG switch 4 0 2, and then starts the start switch.
- the fuel cell system 1 0 0 is started by operating the operation part 4 0 4 and turning on the start switch 4 0 4.
- the inspector when inspecting the fuel cell stack 10, the inspector connects the scan tool 5 0 to the input / output terminal 90 and operates the operation part of the IG switch 4 0 2 to operate the IG switch 4 0 2.
- the power of the scan tool 50 With the power turned on, the power of the scan tool 50 is turned on, and the cell voltage of the fuel cell stack 10 measured by the cell monitor 24 is displayed on the scan tool 50 and confirmed.
- the scan tool 50 is connected to the input / output terminal 90 and the power is on.
- the power ON signal 5 0 6 of the scan tool 50 is input to the controller 40, and the power consumption suppression module 4 3 is turned on by the scan tool 50 (ie, the scan tool 50 (inspection equipment)). Connected).
- the inspector checks the deterioration state of the fuel cell stack 10 by observing the decrease state of the single cell voltage after the power generation stop of the fuel cell stack 10. In this case, the inspector first activates the fuel cell stack 10 to generate power, and once sufficient voltage is obtained, the fuel cell operation is temporarily stopped (IG switch 4 0 2 off). . Subsequently, the inspector turns on the IG switch 4 0 2 and turns the start switch 4 0 4 off (ie, does not generate power in the fuel cell stack 1 0) and scans the cell voltage.
- the power consumption suppression module 43 determines whether or not the IG switch 40 2 is on (step S 1 0 2). Specifically, when the IG switch 4 0 2 shown in FIG. 1 is turned on and power is supplied to the controller 40 from the battery 30, and the controller 40 starts up, the IG switch 4 0 2 is turned on. Judge that
- the power consumption suppression module 4 3 determines that the IG switch 4 0 2 is on (YES in step S 1 0 2).
- ON / OFF control signal 2 4 4 shown in Fig. 1 is output as an ON signal to FC inverter switch 2 4 6 and ON / OFF control signal 2 0 4 is output as an ON signal to cell monitor switch 2 4 2 (step S 1 0 4).
- Figures 4C and 4E As shown, the FC inverter switch 2 4 6 and the cell monitor switch 2 4 2 are turned on at time t 1.
- the power consumption suppression module 43 determines whether or not the start switch 40 4 is on (FIG. 2: step S 10 06). If the start switch 4 0 4 is still off, the power consumption suppression module 4 3 determines whether or not the elapsed time t since the IG switch 4 0 2 was turned on is 5 seconds or more (step S 1 0 8). If the elapsed time t is less than 5 seconds, the process returns to step S 1 0 6 and repeats until the elapsed time t reaches 5 seconds or the start switch 4 0 4 is turned on.
- step S 1 0 8 it is determined whether or not the elapsed time t is 5 seconds or more, but the time is not limited to 5 seconds and can be arbitrarily set. In this embodiment, if the start switch 4 0 4 is not turned on for more than 5 seconds after the IG switch 4 0 2 is turned on, it is assumed that the start switch 4 0 4 will not be turned on for a while. The time is set to 5 seconds.
- step S 1 1 1 0 When 5 seconds have elapsed since the IG switch 4 0 2 was turned on (time t 2 in FIG. 4), the power consumption suppression module 4 3 determines that the elapsed time t is 5 seconds or more (in step S 1 0 8 Y es Subsequently, it is determined whether or not the scan tool 50 is on (step S 1 1 0). Here, since the power of the scan tool 50 is not yet turned on, the power consumption suppression module 4 3 determines that the scan tool 50 is off (NO in step S 1 1 0). Off control signal 2 0 4 as off signal 2 4 2 Outputs to the cell monitor switch 242 (step S 1 1 1) and outputs to the FC inverter switch 246 using the on / off control signal 244 as an off signal (step S 1 1 2) 0
- the cell monitor switch 242 FC inverter switch 246 is turned off at time t2.
- the power supply from the battery 30 to the cell monitor 24 and the pumps 20 is stopped. Since the power supply to the cell monitor 24 is stopped, the cell voltage of the fuel cell stack 10 is not detected in the cell monitor 24 after the time t2, as shown in FIG. 4F.
- the power consumption suppression module 43 determines whether or not the scan tool 50 is on (step S 1 1 8). When the scan tool 50 is off, the power consumption suppression module 43 outputs the on / off control signal 204 shown in FIG. 1 as an off signal to the cell monitor switch 242 (step S 122), and then It is determined whether or not the start switch 404 is ON (step S 1 24). If the start switch 404 is off, return to step S 1 1 8 and repeat until the scan tool 50 or the start switch 404 is turned on.
- the power consumption suppression module 43 determines that the scan tool 50 is on (YES in step S1 1 8), and The on / off control signal 204 shown is output to the cell monitor switch 242 as an on signal (step S 120).
- the cell monitor switch 242 is turned on, power is supplied from the battery 30 to the cell monitor 24, and detection of the cell voltage is resumed in the cell monitor 24 (FIG. 4).
- the power consumption suppression module 43 determines whether or not the start switch 404 is ON (step S 1 24). If start switch 404 is off, step Return to S 1 1 8 and repeat until start switch 404 is turned on. That is, until the scan tool 50 is turned on and the start switch 404 is turned on, the FC inverter switch 246 remains off and the cell monitor switch 242 is on (FIGS. 4C and 4E). . Therefore, by reducing the power consumed by the pumps 20 and supplying power only to the cell monitor 24, the cell voltage of the fuel cell stack 10 can be detected.
- step S 1 24 When restart switch 404 is turned on by the inspector at time t 4 (FIG. 4B), power consumption suppression module 43 determines that start switch 404 is ON (YES in step S 1 24).
- the ON Z OFF control signal 244 shown in Fig. 1 is output as an ON signal to the FC inverter switch 246, and the ON Z OFF control signal 204 is output as an ON signal to the 242 cell monitor switch 242 (step S). 1 26).
- the FC inverter switch 246 and the cell monitor switch 242 are turned on.
- the cell monitor switch 242 is already turned on at time t 3, and therefore remains on.
- the FC inverter switch 246 and the cell monitor switch 242 are turned on, power is supplied from the battery 30 to the pumps 20 and the cell monitor 24.
- the FC start command module 42 gives a start command 202 to the pumps 20 to start the pumps 20.
- step S106 If the start switch 404 is turned on within 5 seconds after the IG switch 402 is turned on (YES in step S106), the power consumption suppression module in the fuel cell system 100 ends. That is, while the FC inverter switch 246 and the cell monitor switch 242 are both turned on, the fuel cell stack 10 force ⁇ is activated.
- start switch 404 is not turned on. 7
- the power consumption suppression module 43 turns on the on-off control signal 204.
- the signal is output to the cell monitor switch 242 (step S 1 28), and then the ON Z OFF control signal 244 is output as an OFF signal to the FC invert switch 246 (step S 1 1 2). That is, the cell monitor switch 242 is not turned off if the scan tool 50 is turned on even if 5 seconds elapses after the IG switch 402 is turned on and the start switch 404 is turned off. Therefore, the cell voltage of the fuel cell stack 10 can be continuously detected.
- step S 1 1 1 1 1 2 After 5 seconds have elapsed after IG switch 402 is turned on (YES in step S 1 08), after cell monitor switch 242 and FC inverter switch 24 6 are turned off (step S 1 1 1 1 1 2) When the scan tool 50 is turned on (Y ES in step S 1 1 8), the cell monitor switch 242 is turned on (step S 120). However, after that, if the start switch 404 remains off, steps S 1 18 to S 1 24 are repeated, so if the scan tool 50 is turned off during that time (NO in step S 1 1 8) The power consumption suppression module 43 outputs the on / off control signal 204 as an off signal to the cell monitor switch 242 and turns off the cell monitor switch 242 (step S122). Therefore, when it is no longer necessary to detect data related to the fuel cell stack 10 by the cell monitor 24, the power supply to the cell monitor 24 is stopped again by turning off the scan tool 50, and the power consumption of the battery 30 Can be reduced.
- the pumps and the cell monitor are both auxiliary devices related to the start of the fuel cell stack. Therefore, in the conventional fuel cell system, when the IG switch is turned on, both are supplied with power from the battery, He was preparing for the start-up of the fuel cell stack.
- the pumps and cell monitor are connected to the battery by a single switch, and the power supply from the battery to the pump cell monitor is controlled by turning the switch ON / OFF.
- the IG switch Immediately after the IG switch is turned on (for example, within 5 seconds), if the start switch is turned on, the pumps are started and the fuel cell stack is activated. However, if the start switch is not turned on immediately, battery power will be consumed to supply power to the pumps and cell monitor. As a result, when the fuel cell stack was started, there was a problem that sufficient power could not be supplied to the pumps and cell monitor.
- the fuel cell system 1 0 0 of this embodiment when 5 seconds elapse after the IG switch 4 0 2 is turned on and before the start switch 4 0 4 is turned on, the pumps 2 0 and the cell monitor 2 4 When the start switch 4 0 4 is turned on, power is supplied to the pumps 20 and the cell monitor 24 again. Therefore, it is possible to suppress power consumption of the battery 30 in the pumps 20 and the cell monitor 24 until the start of the fuel cell stack 10.
- the pumps 20 and the cell monitor 24 are connected to the battery 30 by separate switches. That is, the power supply to the pumps 20 and the power supply to the cell monitor 24 are controlled independently. Therefore, as described above, even when the power supply to the pumps 20 and the cell monitor 24 4 is stopped to suppress power consumption, the scan tool 50 is connected and the power is turned on. If so, the cell monitor 24 is controlled so that power is forcibly supplied. In this way, it is possible to forcibly supply power to the cell monitor 24 4 when necessary, while suppressing power consumption of the battery 30 until the start of the fuel cell stack 10. Data relating to the fuel cell stack 10 (for example, cell voltage etc.) can be detected without starting the fuel cell stack 10.
- the fuel cell stack 10 for example, cell voltage etc.
- FIG. 5 is an explanatory diagram showing the configuration of the fuel cell system 100 A of this embodiment.
- Fuel cell system 1 Regarding the configuration of the OOA, only the parts different from the first embodiment will be described, and the same reference numerals as in the first embodiment will be used for the same configurations as in the first embodiment, Omitted.
- the power supplied by the battery 30 is roughly divided into three groups.
- the first group 60 and the second group 80 are the same as in the first embodiment, and the third group is the fuel cell related auxiliary machine 2OA.
- Fuel cell-related accessories 2 OA is an air compressor 2 5, hydrogen pump 2 6, cooling water pump 2 7, and inverter circuits 2 1, 2 2, 2 3, and a cell monitor 2 Includes 4 and. That is, in the first embodiment, power is supplied from the battery 30 separately to the pumps 20 and the cell monitor 24. However, in this embodiment, these are used as fuel cell-related auxiliary machines 2OA. As a whole, power is supplied from the battery 30.
- the fuel cell-related auxiliary switch 2 46 A is provided between the fuel cell-related auxiliary machine 2 OA and the battery 30 as the third group.
- the fuel cell-related auxiliary switch 2 4 6 A is similar to the FC inverter switch 2 4 6 in the first embodiment, regardless of the operation of the driver, etc. Controlled by function.
- the fuel cell related auxiliary switch 2 4 6 A is turned on, power is supplied from the battery 30 to the inverter circuits 2 1, 2 2, 2 3, and the cell monitor 2 4. The power supply is stopped.
- FIGS. 6 and 7 are flowcharts showing procedures for suppressing power consumption when starting up the fuel cell system 10 OA.
- FIG. 8 is a time chart showing the on / off timing of each switch of the fuel cell system 100.
- the inverter circuits 21 to 23 and the cell monitor 24 are put together, and between them (fuel cell related auxiliary machine 2 OA) and the battery 30, A fuel cell-related auxiliary switch 246 A is provided. Accordingly, the power consumption suppression program executed in the controller 40 is different from the fuel cell system 100 of the first embodiment.
- the power consumption suppression module 43 A determines whether or not the IG switch 402 is on (step U 1 02).
- IG switch 4 02 is turned on at time t 1 (FIG. 8A)
- power consumption suppression module 43 A determines that IG switch 4 02 is on (Y ES in step U 102), and turns on as shown in FIG.
- the off control signal 244A is output as an on signal to the fuel cell related auxiliary switch 246A (step U104).
- the fuel cell-related auxiliary switch 246A is turned on.
- the fuel cell-related auxiliary switch 246A When the fuel cell-related auxiliary switch 246A is turned on, as shown in FIG. 5, power is supplied from the battery 30 to the fuel cell-related auxiliary 2OA. Fuel cell-related accessories 2 When power is supplied to the OA, power is supplied to the cell monitor 24, so the cell monitor 24 sets the cell voltage of the fuel cell stack 10 as shown in Fig. 8E. Start detecting. Subsequently, the power consumption suppression module 43 A determines whether or not the start switch 404 is on (step U 106). Consumption when start switch 404 is still off The power suppression module 43 ⁇ determines whether or not the elapsed time t after the IG switch 402 is turned on is 5 seconds or longer (step U 1 08). If the elapsed time t is less than 5 seconds, return to step U1 06 and repeat until the elapsed time t reaches 5 seconds or the start switch 404 is turned on.
- step U 1 06 it is determined whether or not the scan tool 50 is on.
- the power consumption suppression module 43 A determines that the scan tool 50 is turned off (NO in step U 110)
- the signal 244A is output as an off signal to the fuel cell-related auxiliary switch 246A (step U 1 1 2).
- the fuel cell-related auxiliary switch 246A is turned off.
- power supply from battery 30 to fuel cell-related auxiliary 2 OA is stopped. Therefore, as shown in FIG. 8E, the cell voltage is not detected in the cell monitor 24 after the time t2.
- the power consumption suppression module 43 A determines whether or not the scan tool 50 is on (step U 1 1 4). When the scan tool 50 is off, the power consumption suppression module 43 outputs the on-Z off control signal 224 A shown in Fig. 5 to the fuel cell-related auxiliary switch 246 A as an off signal (step U 1 1 6) Then, it is determined whether or not the start switch 404 is ON (step U 1 1 8). If the start switch 404 is off, the process returns to step U 1 1 4 and repeats until the scan tool 50 or the start switch 404 is turned on.
- the power consumption suppression module 43 A determines that the scan tool 50 is on (in step U 1 1 4). YES), the on-Z-off control signal 2 4 4 A shown in FIG. 5 is output as an on signal to the fuel cell-related auxiliary switch 2 4 6 A (step U 1 2 0).
- step U 1 2 0 the on-Z-off control signal 2 4 4 A shown in FIG. 5 is output as an on signal to the fuel cell-related auxiliary switch 2 4 6 A (step U 1 2 0).
- fuel cell-related accessory switch 2 46 A is turned on, and power is supplied from battery 30 to fuel cell-related accessory 2 OA. That is, since power is supplied to the cell monitor 24, the cell voltage is detected in the cell monitor 24 after time t3 (FIG. 8E).
- the power consumption suppression module 4 3 A determines whether or not the start switch 40 4 is on (step U 1 1 8). If start switch 4 0 4 is off, return to step U 1 1 4 and repeat until start switch 4 0 4 is turned on. When the restart switch 4 0 4 is turned on by the inspector, the power consumption suppression module 4 3 A determines that the start switch 4 0 4 is on (YES in step U 1 1 8), and the on Z off control signal 2 4 4 A is turned on and output to fuel cell related auxiliary switch 2 4 6 A (step U 1 2 2).
- Power consumption suppression module 4 3 A outputs ON Z OFF control signal 2 4 4 as ON signal to fuel cell related auxiliary switch 2 4 6 A (Step U 1 2 0) . That is, from the IG switch 4 0 2 on, the star switch 4 0 4 Even if 5 seconds have passed, if the scan tool 50 is on, the on / off control signal 2 4 4 A will not be turned off. Therefore, the cell monitor 24 can continue to detect the cell voltage of the fuel cell stack 10 and the power is supplied to the inverter circuits 2 1 to 2 3 while the scan tool 50 is on. Continue to be.
- the power supply from the battery 30 to the fuel cell related auxiliary device 2 O A is collectively controlled. Therefore, when the scan tool 50 is connected to the input / output terminal 90 and the power of the scan tool 50 is on, power is supplied to the entire fuel cell-related accessory 2OA. Therefore, even if 5 seconds elapses when the IG switch 4 0 2 is on and the start switch 4 0 4 is off, by connecting the scan tool 50, the battery 30 can be connected to the inverter circuit 2 "! ⁇ Since power is supplied to 23, it is possible to rewrite the software of the inverter circuits 21 to 23 without supplying power from outside.
- FIG. 9 is an explanatory diagram showing the configuration of the fuel cell system 100 B of this example.
- the configuration of the fuel cell system 1 OOB Regarding the configuration of the fuel cell system 1 OOB, only the differences from the second embodiment will be described, and the same reference numerals as those in the second embodiment will be used for the same configurations as those in the second embodiment. Omitted.
- an input / output terminal 92 is provided in addition to the configuration of the fuel cell system 10 0 A of the second embodiment.
- the input / output terminal 92 is a terminal for connecting the test connector 52.
- the test connector 52 is an inspection device capable of diagnosing a failure in the same manner as the scan barrel 50 used as the inspection device in the first and second embodiments described above. Is also of a simple configuration.
- the test connector 5 2 is connected to the input / output terminal 9 2, one of the resistors (not shown) of the controller 40 is grounded. It has become.
- the power consumption suppression module 4 3 B determines that the test connector 5 2 (inspection device) is connected when the resistance in the controller 40 is grounded.
- the scan tool 50 has a forced drive mode.
- the forced drive mode is a mode in which the fuel cell stack 10 is forcibly driven, that is, a mode in which power is forcibly supplied to the fuel cell related auxiliary equipment 2 O A.
- the fuel cell-related auxiliary switch 2 4 6 A is turned on from the scan tool 50 (hereinafter also simply referred to as “on request”)
- Force controller 4 is input to 0, and the power consumption suppression module 4 3 B determines that an ON request is received from the scan tool 50.
- the power consumption suppression module 4 3 B determines that the inspection device has been connected when an ON request is received from the scan pool 50.
- the scan tool 50 and the test connector 52 correspond to the inspection device in the claims.
- the power consumption suppression module 4 3 B has an inspection device whether the scan tool 50 is connected or the test connector 52 is connected, as will be described in detail later. Assume that it is connected, and supply power to the fuel cell-related auxiliary equipment 2 OA. However, as described above, the criteria for judging that the inspection device is connected are different between the scan tool 50 and the test connector 52.
- the scan tool 50 (also referred to as a service tool) is often used by car dealers for inspections and repairs, so-called service personnel, etc., to inspect the fuel cell stack 10 for failure. It is a fault diagnosis machine that can obtain various information about stack 10.
- the test connector 52 (also called diagnostic checker) is often used by general users to obtain simple information about the fuel cell stack 10.
- the cell voltage information is obtained from the cell monitor 24 through the controller 40, the scan tool 50, or the test. Sent to connector 52.
- FIGS. 10 and 11 are flowcharts showing a procedure for suppressing power consumption when the fuel cell system 100 B is activated.
- FIG. 12 is a time chart showing the ON / OFF timing of each switch of the fuel cell system 100.
- the power consumption suppression module 4 3 B is different from the second embodiment in that the inspection device is not used when the scan tool 50 is connected or when the test connector 52 is connected. Judge that it is connected, and supply power to the fuel cell-related auxiliary machine 2 OA. Accordingly, the power consumption suppression program executed in the controller 40 is different from the fuel cell system 10 O A of the second embodiment.
- FIGS. 10 and 11 the same steps as those in the second embodiment are denoted by the same reference numerals.
- the power consumption suppression module 4 3 B is connected to the I G switch 4
- step U 1 0 2 It is determined whether 0 2 is ON or not (FIG. 10: step U 1 0 2).
- the fuel cell related auxiliary switch 2 46 A When the fuel cell related auxiliary switch 2 46 A is turned on, as shown in Fig. 9, power is supplied from the battery 30 to the fuel cell related auxiliary 2 OA, and power is supplied to the cell monitor 24. As shown in FIG. 12 F, the cell monitor 24 starts to detect the cell voltage of the fuel cell stack 10. Subsequently, the power consumption suppression module 43 B determines whether or not the start switch 404 is on. If the start switch 404 is still off, the power consumption suppression module
- step U 1 08 determines whether or not the elapsed time t after the IG switch 402 is turned on is 5 seconds or more (step U 1 08). If the elapsed time t is less than 5 seconds, the process returns to step U1 06 and repeats until the elapsed time t reaches 5 seconds or the start switch 404 is turned on.
- step U 1 09 it is determined whether or not the test connector 52 is turned on (step U 1 09).
- the power consumption suppression module 43 B determines that the test connector 52 is off (NO in step U 1 0 9).
- step U 1 1 it is determined whether or not there is the above-mentioned ON request (NO in step U 1 1 1).
- the scan tool 50 It is determined whether or not there is the above-mentioned ON request (NO in step U 1 1 1).
- the scan tool 50 It is determined whether or not there is the above-mentioned ON request (NO in step U 1 1 1).
- the scan tool 50 It is determined whether or not there is the above-mentioned ON request (NO in step U 1 1 1).
- the scan tool 50 It is determined whether or not there is the above-mentioned ON request (NO in step U 1 1 1). In this example, the scan tool
- the power consumption suppression module 43 B determines that there is no turn-on request from the scan tool 50 (NO in step U 1 1 1) and turns off the on-Z off control signal 244 A shown in FIG. A signal is output to the fuel cell related auxiliary switch 246 A (step U 1 1 2).
- the fuel cell related auxiliary device switch 246A is turned off.
- the power supply from the battery 30 to the fuel cell-related auxiliary 2 OA is stopped. Therefore, as shown in FIG. 12 F, the cell voltage is not detected in the cell monitor 24 after time t2.
- the power consumption suppression module 43 B determines whether or not the test connector 52 is on as shown in FIG. 11 (step U 1 1 3). If the test connector 52 is off (that is, not connected), the scan tool 50 will then send an on request. It is determined whether or not there is (step U 1 1 5). When there is no ON request from the scan tool 50, the power consumption suppression module 43 B outputs the ON / OFF control signal 224A shown in Fig. 9 to the fuel cell-related auxiliary switch 246A as an OFF signal (Step U 1 1 6) Then, it is determined whether or not the start switch 404 is ON (step U 1 1 8). If the start switch 404 is OFF, return to step U 1 1 3 and repeat until either the test connector 52 or the start switch 404 is turned ON or an ON request is input from the scan tool 50 to the controller 40.
- the power consumption suppression module 43B determines that the test connector 52 is ON (YES in step U1 13).
- the on / off control signal 244A shown is output as an on signal to the fuel cell-related accessory switch 246A (step U 120).
- fuel cell-related accessory switch 246A is turned on, and power is supplied from battery 30 to fuel cell-related accessory 2OA. That is, since electric power is supplied to the cell monitor 24, the cell voltage is detected by the cell monitor 24 after time t3 (FIG. 12F).
- the power consumption suppression module 43 B determines whether or not the start switch 404 is ON (step U 1 1 8). If start switch 404 is off, return to step U 1 1 3 and repeat until start switch 404 is on. When restart switch 404 is turned on by the inspector, power consumption suppression module 43 B determines that start switch 404 is on (YES in step U 1 1 8) and turns on / off control signal 244 A. The signal is output to the fuel cell-related auxiliary switch 246 A (step U 122).
- the fuel cell-related auxiliary switch 246A is turned on.
- the fuel cell-related auxiliary switch 246A is already turned on at time t3, and therefore remains on.
- Fuel cell related supplement When the machine switch 246 A is turned on, power is supplied from the battery 30 to the fuel cell related auxiliary machine 2 OA, and the FC start command module 42 gives a start command 202 to the inverter circuits 21 to 23.
- the air compressor 25, the hydrogen pump 26, and the cooling water pump 27 are activated, and the fuel cell stack 10 is activated.
- IG switch 402 is turned on (Fig. 10: YES in step U 1002), even if 5 seconds have passed without star switch 404 being turned on (Y ES in step U 108).
- the test connector 52 is on (connected) (Y ES in step U 1 09)
- the power consumption suppression module 43 B outputs the on / off control signal 244 as an on signal to the fuel cell related auxiliary switch 246A. (Step U 1 20). Even if the test connector 52 is not turned on (NO in step S 110), the power consumption suppression module 43 B is turned on if there is a turn-on request from the scan tool 50 (Y ES in step U 1 1 1).
- the ON / OFF control signal 244 is output as an ON signal to the fuel cell-related auxiliary switch 246 A (step U 120).
- the cell monitor 24 can continue to detect the cell voltage and the like of the fuel cell stack 10, and power is continuously supplied to the inverter circuits 21-23.
- the test connector 52 is connected to the input / output terminal 92, or the scan tool 50 is connected to the input / output terminal 90, and the scan tool 50 When there is an ON request from the fuel cell-related auxiliary equipment 2 Power is supplied to the entire OA.
- the inspector connects the test connector 52 or outputs an ON request from the scan tool 50, the fuel cell-related auxiliary machine 20A receives power even when the IG switch 402 is ON and the start switch 404 is OFF. Supply Therefore, information about the cell voltage can be obtained without supplying power from the outside, and the software of the inverter circuits 21 to 23 can be rewritten.
- the fuel cell-related auxiliary machine is connected to / from the battery 30.
- the conditions are not limited to the above-described embodiment, and various conditions can be set. For example, when the IG switch 4 0 2 is turned on and the start switch 4 0 4 is not turned on, the charged amount of the battery 30 is detected, and when the charged amount decreases to a predetermined amount, the fuel cell You may make it reduce the electric power supply from the battery 30 to an associated auxiliary machine.
- the state of the user may be detected, and the power supply from the battery 30 to the fuel cell-related auxiliary device may be reduced according to the detection result. For example, it may be detected whether or not there is a person in the driver's seat, and if there is no person, it is assumed that the start switch 4 0 4 is not turned on for a while and the power supply may be reduced.
- a solid polymer fuel cell is used, but a phosphoric acid fuel cell, a molten carbonate fuel cell, a solid oxide fuel cell Various fuel cells such as a fuel cell can be used.
- the inspection device is a so-called scan tool 50
- the connector 52 is shown as an example, but other devices may be used as long as they are used for inspection.
- the power consumption suppression module 4 3, 4 3 A is connected to the scan tool 50 when the power is turned on.
- the power consumption suppression module 4 3 B is connected to the test connector 5 2 (that is, a certain resistance in the controller 40 is connected).
- the scan tool 50 When it is determined that the test connector 5 2 is ON (in the claims, “inspection equipment is connected J”), and there is an ON request from the scan pool 50, the scan tool 50 Although it is judged that it is on (“inspection equipment is connected in the claims”), the criteria (timing) that the power consumption suppression module 4 3 judges that the inspection equipment is connected is limited to this. Absent. For example, in the first embodiment, when information about the cell voltage is requested from the scan tool 50, it is determined that “inspection equipment is connected” and the cell monitor switch 2 4 2 is turned on. May be.
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Abstract
Description
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CN2008801119788A CN101828289B (zh) | 2007-10-17 | 2008-10-14 | 燃料电池系统 |
US12/738,264 US8309262B2 (en) | 2007-10-17 | 2008-10-14 | Fuel cell system |
DE112008002742.0T DE112008002742B4 (de) | 2007-10-17 | 2008-10-14 | Brennstoffzellensystem |
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JP2007270274 | 2007-10-17 | ||
JP2007-270274 | 2007-10-17 | ||
JP2007337517A JP4380766B2 (ja) | 2007-10-17 | 2007-12-27 | 燃料電池システム |
JP2007-337517 | 2007-12-27 |
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Citations (5)
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JP2004179002A (ja) * | 2002-11-27 | 2004-06-24 | Toyota Motor Corp | 燃料電池の診断装置および診断方法 |
JP2004335444A (ja) * | 2003-04-16 | 2004-11-25 | Toyota Motor Corp | 燃料電池の制御方法 |
JP2005073464A (ja) * | 2003-08-27 | 2005-03-17 | Toyota Motor Corp | 燃料電池車両の始動装置及び始動方法 |
JP2005332702A (ja) * | 2004-05-20 | 2005-12-02 | Nissan Motor Co Ltd | 燃料電池診断装置及び燃料電池診断方法 |
JP2008152984A (ja) * | 2006-12-15 | 2008-07-03 | Toyota Motor Corp | 燃料電池システム及び燃料電池システムの起動方法 |
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JP2004179002A (ja) * | 2002-11-27 | 2004-06-24 | Toyota Motor Corp | 燃料電池の診断装置および診断方法 |
JP2004335444A (ja) * | 2003-04-16 | 2004-11-25 | Toyota Motor Corp | 燃料電池の制御方法 |
JP2005073464A (ja) * | 2003-08-27 | 2005-03-17 | Toyota Motor Corp | 燃料電池車両の始動装置及び始動方法 |
JP2005332702A (ja) * | 2004-05-20 | 2005-12-02 | Nissan Motor Co Ltd | 燃料電池診断装置及び燃料電池診断方法 |
JP2008152984A (ja) * | 2006-12-15 | 2008-07-03 | Toyota Motor Corp | 燃料電池システム及び燃料電池システムの起動方法 |
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