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WO2007069484A1 - Dispositif de pile a combustible et corps mobile - Google Patents

Dispositif de pile a combustible et corps mobile Download PDF

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Publication number
WO2007069484A1
WO2007069484A1 PCT/JP2006/324137 JP2006324137W WO2007069484A1 WO 2007069484 A1 WO2007069484 A1 WO 2007069484A1 JP 2006324137 W JP2006324137 W JP 2006324137W WO 2007069484 A1 WO2007069484 A1 WO 2007069484A1
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WO
WIPO (PCT)
Prior art keywords
fuel cell
control
injector
fuel
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2006/324137
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English (en)
Japanese (ja)
Inventor
Yoshinobu Hasuka
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Toyota Motor Corp
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Toyota Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of WO2007069484A1 publication Critical patent/WO2007069484A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H01M8/04082—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
    • H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
    • H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04992—Processes for controlling fuel cells or fuel cell systems characterised by the implementation of mathematical or computational algorithms, e.g. feedback control loops, fuzzy logic, neural networks or artificial intelligence
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

Definitions

  • the present invention relates to a fuel cell system and a moving body.
  • a fuel cell system equipped with a fuel cell that generates electric power by receiving supply of reaction gas (fuel gas and oxidizing gas) has been proposed and put into practical use.
  • a fuel cell system is provided with a fuel supply passage for flowing fuel gas supplied from a fuel supply source such as a hydrogen tank to the fuel cell.
  • a pressure regulating valve that reduces this supply pressure to a certain value is generally provided in the fuel supply 5 flow path.
  • a pressure regulating valve regulator
  • the fuel gas supply pressure depends on the operating state of the system. Has been proposed (see, for example, Japanese Patent Application Laid-Open No. 20-4-13998-4;).
  • the present invention has been made in view of such circumstances, and even when the load on the fuel cell changes suddenly, the pressure value of the fuel gas quickly follows the predetermined target pressure value. It is an object of the present invention to provide a fuel cell system with excellent responsiveness.
  • a fuel cell system comprises a fuel cell, a fuel supply system for supplying fuel gas to the fuel cell, and a gas state upstream of the fuel supply system.
  • a fuel cell system comprising: an injector to be supplied to the downstream side; and a control means for driving and controlling the injector; and a state quantity detection means for detecting a state quantity of the fuel gas supplied to the fuel cell.
  • the control means calculates a deviation between the target state quantity of the fuel gas supplied to the fuel cell and the dust emission state quantity of the fuel gas detected by the state quantity detection means, and this deviation is a predetermined threshold value.
  • the feedback control that sets the operating state of the injector so as to reduce the deviation is realized in the following cases, while the full open control or full close control of the injector is performed when the deviation exceeds the threshold value. It is what is realized.
  • “Gas state” means a gas state represented by flow rate, pressure, temperature, molarity, etc., and particularly includes at least one of gas flow rate and gas pressure.
  • the “state quantity of fuel gas” is a physical quantity representing the state of the fuel gas, and means, for example, the value of the pressure or flow rate of the fuel gas.
  • control means realizes full-injection control of the injector when the deviation exceeds a predetermined threshold value and the detected state quantity is smaller than the target state quantity, while the deviation exceeds the predetermined threshold value. When this is exceeded, and the detected state quantity is larger than the target state quantity, it is possible to realize full-closed control of the injector.
  • control means sets a predetermined threshold used when switching between the feedback control and the full-open control or the full-close control, and periodically changes the state quantity of the fuel gas to be controlled. It is preferable to set a specific value to suppress.
  • hunting state quantity of fuel gas to be controlled
  • the moving body which concerns on this invention is provided with the said fuel cell system. According to such a configuration, even when the load on the fuel cell suddenly changes, the fuel cell system that can quickly follow the predetermined pressure value of the fuel gas is provided. Therefore, it is possible to provide a moving body having excellent responsiveness. According to the present invention, even when the load on the fuel cell is suddenly changed, the fuel gas pressure value can quickly follow the predetermined target pressure value and has excellent responsiveness.
  • a battery system can be provided.
  • FIG. 1 is a configuration diagram of a fuel cell system according to an embodiment of the present invention.
  • FIG. 2 is a control block diagram for explaining a control mode of the control device of the fuel cell system shown in FIG. '.
  • FIG. 3 is a flowchart for explaining the operation method of the fuel cell system shown in FIG.
  • FIG. 4 is a time chart for explaining the time history of the hydrogen gas pressure value in the fuel cell system shown in FIG.
  • FIG. 5 is a configuration diagram showing a modification of the fuel cell system shown in FIG.
  • the fuel cell system 1 includes a fuel cell 10 that generates electric power upon receiving supply of reaction gases (oxidized gas and fuel gas), and includes a fuel cell 10.
  • An oxidizing gas piping system 2 for supplying air as an oxidizing gas, a hydrogen gas piping system 3 for supplying hydrogen gas as a fuel gas to the fuel cell 10, a control device 4 for integrated control of the entire system, and the like are provided.
  • the fuel cell 10 has a stack structure in which a required number of unit cells that generate power upon receiving a reaction gas are stacked.
  • the electric power generated by the fuel cell 10 is supplied to a PCU (Power Control Unit) 1 1.
  • the PCU 11 includes an inverter, a DC-DC converter, and the like disposed between the fuel cell 10 and the traction motor 12. Further, the fuel cell 10 is provided with a current sensor 13 for detecting a current during power generation.
  • the oxidizing gas piping system 2 includes: an air supply flow path 21 for supplying the oxidizing gas (air) humidified by the humidifier 20 to the fuel cell 10; and the oxidized off-gas discharged from the fuel cell 10
  • An air discharge passage 2 2 that leads to the humidifier 2.0, and an exhaust passage 2 3 that guides the oxidant off-gas from the humidifier 21 to the outside.
  • the air supply passage 21 is provided with a compressor 24 that takes in the oxidizing gas in the atmosphere and pumps it to the humidifier 20.
  • the hydrogen gas piping system 3 includes a hydrogen tank 3.0 that stores high-pressure hydrogen gas, a hydrogen supply passage 3 1 for supplying hydrogen gas from the hydrogen tank 30 to the fuel cell 10, and a fuel cell 1 And a circulation flow path 3 2 for returning the hydrogen off-gas discharged from 0 to the hydrogen supply flow path 31.
  • the hydrogen gas distribution system 3 is an embodiment of the fuel supply system in the present invention.
  • the hydrogen tank 30 has a reformer that generates a hydrogen rich reformed gas from a hydrocarbon-based fuel, and a high pressure gas tank that stores the reformed gas generated by the reformer in a high pressure state. Can also be adopted.
  • a tank having a hydrogen storage alloy may be employed.
  • the hydrogen supply flow path 3 1 is provided with a shut-off valve 3 3 that shuts off or allows the supply of hydrogen gas from the hydrogen tank 30, a regulator 3 4 that adjusts the pressure of the hydrogen gas, and an injector 3 5. It has been. Further, on the upstream side of the injector 35, there are provided a primary pressure sensor 41 and a temperature sensor 42 for detecting the pressure and temperature of the hydrogen gas in the hydrogen supply flow path 31. In addition, on the downstream side of the injector 3 5 and upstream of the junction of the hydrogen supply flow path 3 1 and the circulation flow path 3 2, A secondary-side pressure sensor 4′3 for detecting the pressure of hydrogen gas in the hydrogen supply flow path 31 is provided. The secondary pressure sensor 43 detects the state quantity (pressure) of hydrogen gas as the fuel gas, and functions as the state quantity detection means in the present invention.
  • the regulator 34 is a device that regulates the upstream pressure (primary pressure) to a preset secondary pressure.
  • a mechanical pressure reducing valve for reducing the primary pressure is employed as the regulator 34.
  • the mechanical pressure reducing valve has a housing in which a back pressure chamber and a pressure regulating chamber are formed with a diaphragm therebetween, and the primary pressure is adjusted to a predetermined pressure in the pressure regulating chamber by the back pressure in the back pressure chamber.
  • a known configuration can be adopted in which the pressure is reduced to a secondary pressure.
  • FIG. 1 by arranging two regulators 34 on the upstream side of the injector 35, the upstream pressure of the injector 35 can be effectively reduced.
  • the design freedom of the mechanical structure of the injector 35 (valve body, housing, flow path, driving device, etc.) can be increased.
  • the valve body of the injector 3'5 moves due to an increase in the differential pressure between the upstream pressure and the downstream pressure of the injector 35. Can be suppressed. Accordingly, it is possible to widen the adjustable pressure range of the downstream side pressure of the injector 35 and to suppress the decrease in the responsiveness of the injector 35.
  • the injector 35 is an electromagnetically driven on-off valve that can adjust the gas flow rate and gas pressure by driving the valve body directly at a predetermined driving cycle with electromagnetic driving force and separating it from the valve seat. is there.
  • the injector 35 includes a valve seat having an injection hole for injecting gaseous fuel such as hydrogen gas, a nozzle body for supplying and guiding the gaseous fuel to the injection hole, and an axial direction (gas flow with respect to the nozzle body). And a valve body that is accommodated and held movably in a direction) to open and close the injection hole.
  • the valve body of the indicator 35 is an electromagnetic drive device.
  • the opening area of the injection hole can be switched between two stages or multiple stages by turning on and off the pulsed excitation current that is driven by the solenoid and fed to the solenoid.
  • the indicator 35 is a valve (valve body and valve seat) that directly opens and closes with an electromagnetic driving force, and has a high responsiveness because its driving cycle can be controlled to a highly responsive region.
  • Injector 35 is configured to change at least one of the opening area (opening) and the opening time of the valve provided in the gas flow path of injector 35 in order to supply the required gas flow rate downstream. Adjust the gas flow rate (or hydrogen molar concentration) supplied to the downstream side (fuel cell 10 side). Injector
  • the gas flow rate is adjusted by opening and closing the valve body of 3 and the gas pressure supplied downstream of the injector 3 5 is depressurized from the gas pressure upstream of the injector 3 5. It can also be interpreted as a (regulator). Further, in the present embodiment, it is possible to change the pressure adjustment amount (pressure reduction amount) of the upstream gas pressure of the injector 35 so as to match the required pressure within a predetermined pressure range in accordance with the gas demand. It can also be interpreted as a modulated pressure valve.
  • an indicator 35 is disposed upstream of the junction A 1 between the hydrogen supply flow path 31 and the circulation flow path 32.
  • the hydrogen gas supplied from each hydrogen tank 30 is joined (hydrogen gas joining part A 2) Place the indicator 35 on the downstream side.
  • An exhaust flow path 3 8 is connected to the circulation flow path 3 2 via a gas-liquid separator 3 6 and an exhaust drain valve 3 7.
  • the gas-liquid separator 36 recovers moisture from the hydrogen off gas.
  • the exhaust drain valve 3 7 is activated by a command from the control device 4.
  • the circulation flow path 32 is provided with a hydrogen pump 39 that pressurizes the hydrogen off gas in the circulation flow path 32 and sends it to the hydrogen supply flow path 31 side.
  • the hydrogen off-gas discharged through the exhaust drain valve 3 7 and the discharge flow path 3 8 is diluted by the diluter 40 and joined with the oxidizing off gas in the exhaust flow path 23. .
  • the control device 4 detects the amount of operation of an operating member for acceleration (accelerator, etc.) provided in the fuel cell vehicle S, and requests an acceleration request value (for example, required power generation amount from a load device such as the traction motor 12). Control the operation of various devices in the system.
  • the load device is an auxiliary device necessary for operating the fuel cell 10 (for example, compressor 24, hydrogen pump 39, cooling pump motor, etc.), fuel Electricity consuming devices including actuators used in various devices (transmissions, wheel control devices, steering devices, suspension devices, etc.) involved in the running of battery vehicle S, air conditioning devices (air conditioners) for passenger spaces, lighting, audio, etc. Is a generic term.
  • the control device 4 is configured by a computer system (not shown).
  • a computer system includes a CPU, ROM, RAM, HDD, input / output interface, display, and the like.
  • Various control programs recorded in the ROM are read and executed by the CPU, and various controls are performed. Operation is realized.
  • the control device 4 determines the fuel cell 1 based on the operating state of the fuel cell 10 (the current value during power generation of the fuel cell 10 detected by the current sensor 13).
  • the flow rate of hydrogen gas consumed at 0 (hereinafter referred to as “hydrogen consumption”) is calculated (fuel consumption calculation function: B 1).
  • the control device 4 calculates a target pressure value at the downstream position of the injector 35 of the hydrogen gas supplied to the fuel cell 10 based on the operating state of the fuel cell 10 (target pressure value calculation function: B 2).
  • the target pressure value is calculated using a specific map representing the relationship between the current value of the fuel cell 10 and the 'target pressure value.
  • the target pressure value calculated by the control device 4 is an embodiment of the target state quantity in the present invention.
  • control device 4 calculates the deviation between the calculated target pressure value and the pressure value (detected pressure value) at the downstream position of the injector 35 detected by the secondary side pressure sensor 4 3.
  • value predetermined threshold determining whether a (delta [rho ⁇ [rho 2 4) below (deviation judgment function: beta 3). Then, when the absolute value of the deviation is equal to or less than a predetermined threshold value, the control device 4 calculates a feedback correction flow rate for reducing this difference (feedback correction flow rate calculation function:... 4).
  • the feedback correction flow rate is a hydrogen gas flow rate that is added to the hydrogen consumption in order to reduce the absolute value of the deviation between the target pressure value and the detected pressure value.
  • the feedback correction flow rate is calculated using a target tracking control law such as ⁇ I control. '
  • the invalid injection time means the time required from when the injector 35 receives the control signal from the control device 4 until the actual injection is started.
  • the invalid injection time is calculated using a specific map representing the relationship between the pressure and temperature of the hydrogen gas upstream of the indicator 35, the applied voltage, and the invalid injection time.
  • the control device 4 calculates the injection flow rate of the indicator 35 by adding the hydrogen consumption amount and the feedback correction flow rate (injection flow rate calculation function: B 7). Then, the control device 4 calculates the actual injection time of the injector 35 by multiplying the value obtained by dividing the injection flow rate of the injector 35 by the static flow rate by the drive cycle of the injector 35, and also calculates this basic injection time.
  • the drive cycle means a stepped (on / off) waveform cycle representing the open / close state of the injection hole of the injector 35.
  • the drive period is set to a constant value by the control device 4.
  • control device 4 controls the gas injection time and the gas injection timing of the indicator 35 by outputting a control signal for realizing the total injection time of the indicator 35 calculated through the above procedure, Adjust the flow rate and pressure of the hydrogen gas supplied to the fuel cell 10. That is, the control device 4 realizes feedback control for reducing the deviation when the absolute value of the deviation is not more than a predetermined threshold value.
  • control device 4 controls the full opening control of the indicator 35 or the actuator 35 when the absolute value of the deviation between the target pressure value and the detected pressure value exceeds a predetermined threshold value ( ⁇ . ⁇ ⁇ ⁇ ⁇ 2 : Fig. 4). Realize fully closed control. Full-open 'Full-closed control is so-called open-loop control, and the opening of the injector 35 is kept fully open and fully closed until the absolute value of the deviation between the target pressure value and the detected pressure value falls below a predetermined threshold. Is.
  • control device 4 fully opens the indicator 3 5 when the absolute value of the deviation exceeds a predetermined threshold ( ⁇ ,,) and the detected pressure value is smaller than the target pressure value.
  • a control signal for continuous injection is output and adjusted so that the flow rate and pressure of hydrogen gas supplied to the fuel cell 10 are maximized (fully open control function: ⁇ 9).
  • the control device 4 is a case where the absolute value of the deviation exceeds a predetermined threshold value ( ⁇ ⁇ 2 ), and the detected pressure value is larger than the target pressure value.
  • a control signal for fully closing the injector 35 ie, stopping the injection
  • the control device 4 uses a predetermined threshold value ( ⁇ ⁇ ⁇ ⁇ ⁇ 2 ) used when switching from feedback control to full-open 'full-closed control in the deviation judgment function B 3 It is set to a specific value that suppresses the phenomenon in which the pressure of a certain hydrogen gas fluctuates periodically. That is, if the threshold value used in the deviation determination is too small, hunting is likely to occur because the feedback control is switched to the fully open / closed control with a relatively small deviation. In order to prevent such a situation, the feedback control is maintained until the deviation becomes relatively large, and when the deviation becomes relatively large, a specific value that can be switched from the feedback control to the fully open and fully closed control is deviated. Adopted as a threshold for judgment. Such a specific value can be appropriately set according to the characteristics of the injector 35.
  • the control device 4 of the fuel cell system 1 uses the current sensor 13 to detect the current value during power generation of the fuel cell 10 (current detection process: S 1). Further, the control device 4 calculates a target pressure value of hydrogen gas supplied to the fuel cell 10 based on the current value detected by the current sensor 13 (target pressure). At the same time as the force value calculation step: S 2), the pressure value downstream of the injector 35 is detected using the secondary pressure sensor 43 (pressure value detection step: S 3). Then, the control device 4 calculates a deviation ⁇ between the target pressure value calculated in the target pressure value calculation step S 2 and the pressure value (detected pressure value) detected in the pressure value detection step S 3 (deviation calculation). Process: S 4).
  • the control device 4 determines whether or not the absolute value of the deviation ⁇ P calculated in the deviation calculation step S4 is equal to or less than a first threshold ⁇ (first deviation determination step: S5).
  • the first threshold value is a threshold value for switching between feedback control and full-open control when the detected pressure value is smaller than the target pressure value.
  • the control device 4 proceeds to a second deviation determination step S6 described later.
  • control device 4 when it is determined that the absolute value of the deviation ⁇ between the target pressure value and the detected pressure value exceeds the first threshold value ⁇ P, the control device 4 fully opens the indicator 35 (continuous injection). Is adjusted so that the flow rate and pressure of the hydrogen gas supplied to the fuel cell 10 are maximized (fully open control process: S 8) 0
  • the control device 4 proceeds to a feedback control step S7 described later.
  • the control device 4 fully closes the indicator 35 (injection stop) To adjust the flow rate and pressure of the hydrogen gas supplied to the fuel cell 10 to a minimum (fully closed control step: S 9).
  • the control device 4 calculates the flow rate of hydrogen gas (hydrogen consumption) consumed by the fuel cell 10 based on the current value detected by the current sensor 13. Further, the control device 4 is based on the deviation ⁇ ⁇ between the target pressure value calculated in the target pressure value calculation step S 2 and the detected pressure value of the indicator 3 5 downstream detected by the secondary pressure sensor 4 3. To calculate the feedback correction flow rate.
  • the feedback correction flow rate is a hydrogen gas flow rate added to the hydrogen consumption amount in order to reduce the absolute value of the deviation ⁇ ⁇ between the target pressure value and the detected pressure value. Then, the control device 4 calculates the injection flow rate of the injector 35 by adding the calculated hydrogen consumption amount and the feedback correction flow rate.
  • control device 4 is based on the pressure of the hydrogen gas upstream of the injector 35 detected by the primary side sensor 41 and the temperature of the hydrogen gas upstream of the injector 35 detected by the temperature sensor 42. Calculate the static flow upstream of the injector 3 5. Then, the control device 4 calculates the basic injection time of the indicator 35 by multiplying the value obtained by dividing the injection flow rate of the indicator 35 by the static flow rate by the drive cycle.
  • control device 4 includes the pressure of the hydrogen gas upstream of the injector 35 detected by the primary pressure sensor 41, the temperature of the hydrogen gas upstream of the injector 35 detected by the temperature sensor 42, and the applied voltage. Based on, the invalid injection time of the injector 35 is calculated, and the total injection time of the injector 35 is calculated by adding the invalid injection time and the basic injection time of the injector 35. So After that, the control device 4 controls the gas injection time and the gas injection time of the injector 3 5 by outputting a control signal related to the calculated total injection time of the injector 3 5. Adjust the flow rate and pressure of hydrogen gas supplied to zero. By repeating the above process group and adjusting the pressure, the detected pressure value can be brought close to the target pressure value.
  • the time chart of FIG. 4 shows the time history of the detected pressure value of the fuel cell system 1 according to this embodiment (the pressure value on the downstream side of the indicator 35 detected using the secondary pressure sensor 43). It is.
  • the detected pressure value is smaller than the target pressure value, and the absolute value of the deviation ⁇ ⁇ between the target pressure value and the detected pressure value is from the threshold value ⁇ ⁇ . Since it is large, the control device 4 realizes full opening control of the injector 3 5. As a result, the detected pressure value approaches the target pressure value rapidly, and the absolute value of the deviation ⁇ decreases rapidly. Then, when the absolute value of the deviation ⁇ is equal to or less than the threshold value ' ⁇ , the control device 4 switches from the fully open control to the feedback control. As a result, the change speed of the detected pressure value is reduced.
  • the control device 4 After that, when the detected pressure value becomes larger than the target pressure value, and the absolute value of the deviation ⁇ ⁇ between the target pressure value and the detected pressure ⁇ S becomes larger than the threshold value ⁇ ⁇ ⁇ 2 , the control device 4 provides feedback. Switch from control to fully closed control. As a result, the detected pressure value rapidly approaches the target pressure value, and the absolute value of the deviation ⁇ decreases rapidly. Then, the control unit 4, when the absolute value of the deviation delta [rho becomes a threshold delta [rho 2 below, switch to Fi one Dobakku control from the fully closed control. In this way, by switching between feedback control and full-open / full-close control according to the deviation ⁇ , the detected pressure value can be quickly converged to the target pressure value.
  • the absolute value of the deviation ⁇ ⁇ between the target pressure value of hydrogen gas supplied to the fuel cell 10 and the detected pressure value is a predetermined threshold value ( ⁇ ⁇ ,, ⁇ ⁇ 2 ) Normal feedback control if
  • ⁇ ⁇ ,, ⁇ ⁇ 2 a predetermined threshold value
  • full open control or full close control of the injector .35 can be realized. Therefore, the detected pressure value can be quickly adjusted to the target pressure value even during start-up or intermittent operation when the load on the fuel cell 10 changes abruptly and the deviation ⁇ P between the target pressure value and the detected pressure value increases. You can approach (improve responsiveness).
  • the fuel cell system 1 since the fully open control of the injector 35 can be realized, the low-temperature hydrogen gas released from the hydrogen tank 30 is made to be fully opened P. Heat can be generated by the heated indicator 3 5. Therefore, since the temperature difference between the hydrogen gas present in the fuel cell 10 and the hydrogen gas supplied to the fuel cell 10 can be reduced, the deterioration of the fuel cell 10 can be suppressed. It becomes possible.
  • the control device 4 sets a predetermined threshold ( ⁇ P 2 ) adopted when switching between the feedback control and the fully open / closed control. It is set to a specific value (a value that suppresses periodic fluctuations in the pressure of the hydrogen gas being controlled). Therefore, it is possible to suppress hunting from occurring when switching from feedback control to full-open / full-closed control or from full-open / full-closed control to feedback control.
  • the fuel cell vehicle s (moving body) according to the present embodiment causes the pressure value of hydrogen gas to quickly follow a predetermined target pressure value even when the load on the fuel cell 10 changes suddenly. Since the fuel cell system 1 is provided, it has excellent responsiveness.
  • the example in which the hydrogen pump 39 is provided in the circulation flow path 32 has been described, but an ejector may be employed instead of the hydrogen pump 39.
  • an example in which the exhaust / drain valve 3 7 for realizing both exhaust and drainage is provided in the circulation flow path 3 2 is shown.
  • the water content recovered by the gas-liquid separator 3 6 is shown. It is also possible to separately provide a drain valve for discharging the gas to the outside and an exhaust valve for discharging the gas in the circulation channel 3 2 to the outside, and the exhaust valve can be controlled by the control device 4 ′.
  • the secondary pressure sensor 4 3 is arranged at the downstream position of the injector 3 5 of the hydrogen supply flow path 3 1 of the hydrogen gas piping system 3 and the pressure at this position is adjusted (predetermined)
  • An example is shown in which the operating state of the injector 35 is set so that it approaches the target pressure value.
  • the position of the secondary pressure sensor is not limited to this.
  • a secondary pressure sensor can also be placed in the vicinity (on the circulation channel .3 2).
  • a map in which the target pressure value at each position of the secondary side pressure sensor is recorded is created in advance, and the target pressure value recorded in this map and the pressure value (detected pressure) detected by the secondary side pressure sensor are recorded. Value) and the feedback correction flow rate is calculated based on.
  • the shutoff valve 3 3 and the regulator 34 are provided in the hydrogen supply flow path 31.
  • the indicator 35 has a function as a variable pressure control valve.
  • the current value during power generation of the battery cell 10 is detected, and the target pressure value and the hydrogen gas consumption flow rate are calculated based on this current value to perform feedback control.
  • other physical quantities indicating the operating state of the fuel cell 10 are detected, and the detected physical quantity It is also possible to perform feedback control according to the conditions.

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  • Fuel Cell (AREA)

Abstract

L'invention concerne un dispositif de pile à combustible (1) comprenant une pile à combustible, un système d'alimentation en combustible servant à alimenter la pile à combustible en gaz combustible, un injecteur servant à réguler l'état du gaz en amont du système d'alimentation en combustible et à envoyer le gaz régulé en aval. Un moyen de commande servant à commander l'entraînement de l'injecteur est équipé d'un moyen de détection de l'état ou de la quantité qui permet de détecter l'état ou la quantité du gaz combustible fourni à la pile à combustible. Le moyen de commande calcule la différence entre un état/quantité cible du gaz combustible fourni à la pile à combustible et un état/quantité du gaz combustible détecté par le moyen de détection de l'état ou de la quantité et procède à un asservissement si la différence est inférieure à un seuil prédéterminé et à une commande complètement ouverte ou à une commande complètement fermée de l'injecteur dans un autre cas.
PCT/JP2006/324137 2005-12-15 2006-11-28 Dispositif de pile a combustible et corps mobile Ceased WO2007069484A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005-361417 2005-12-15
JP2005361417A JP2007165162A (ja) 2005-12-15 2005-12-15 燃料電池システム及び移動体

Publications (1)

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WO2007069484A1 true WO2007069484A1 (fr) 2007-06-21

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PCT/JP2006/324137 Ceased WO2007069484A1 (fr) 2005-12-15 2006-11-28 Dispositif de pile a combustible et corps mobile

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JP (1) JP2007165162A (fr)
WO (1) WO2007069484A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009075176A1 (fr) * 2007-12-11 2009-06-18 Toyota Jidosha Kabushiki Kaisha Système de piles à combustible et corps en mouvement

Families Citing this family (3)

* Cited by examiner, † Cited by third party
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JP6004925B2 (ja) * 2011-12-19 2016-10-12 本田技研工業株式会社 燃料利用システム
JP7469260B2 (ja) * 2021-06-11 2024-04-16 株式会社豊田自動織機 水素供給装置
JP7452515B2 (ja) 2021-10-27 2024-03-19 トヨタ自動車株式会社 燃料電池の燃料ガス供給システムおよびその制御方法

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6282658A (ja) * 1985-10-04 1987-04-16 Toshiba Corp 燃料電池発電プラント圧力流量制御装置
JPS62160666A (ja) * 1986-01-08 1987-07-16 Toshiba Corp 燃料電池発電システム
JPS62259353A (ja) * 1986-05-02 1987-11-11 Toshiba Corp 燃料電池発電システム
JPH03276573A (ja) * 1990-03-26 1991-12-06 Fuji Electric Co Ltd 車両搭載用燃料電池の制御方式
JPH0775214A (ja) * 1993-07-08 1995-03-17 Daimler Benz Ag 燃料電池付き走行車における動的な出力調整方法とその装置
JP2002117875A (ja) * 2000-10-11 2002-04-19 Nissan Motor Co Ltd 燃料電池システムの制御装置
JP2003077517A (ja) * 2001-09-03 2003-03-14 Toyota Motor Corp 燃料電池システム
JP2003331895A (ja) * 2002-05-10 2003-11-21 Honda Motor Co Ltd 燃料ガスの供給不足検出方法および燃料電池の制御方法
JP2004079490A (ja) * 2002-08-09 2004-03-11 Equos Research Co Ltd 燃料電池装置
JP2004362825A (ja) * 2003-06-02 2004-12-24 Nissan Motor Co Ltd 燃料電池システム
JP2005327597A (ja) * 2004-05-14 2005-11-24 Toyota Motor Corp 燃料電池システム
JP2005327596A (ja) * 2004-05-14 2005-11-24 Toyota Motor Corp 燃料電池システム
JP2006079891A (ja) * 2004-09-08 2006-03-23 Nissan Motor Co Ltd 燃料電池システム
JP2007035450A (ja) * 2005-07-27 2007-02-08 Toyota Motor Corp 燃料電池システム

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6282658A (ja) * 1985-10-04 1987-04-16 Toshiba Corp 燃料電池発電プラント圧力流量制御装置
JPS62160666A (ja) * 1986-01-08 1987-07-16 Toshiba Corp 燃料電池発電システム
JPS62259353A (ja) * 1986-05-02 1987-11-11 Toshiba Corp 燃料電池発電システム
JPH03276573A (ja) * 1990-03-26 1991-12-06 Fuji Electric Co Ltd 車両搭載用燃料電池の制御方式
JPH0775214A (ja) * 1993-07-08 1995-03-17 Daimler Benz Ag 燃料電池付き走行車における動的な出力調整方法とその装置
JP2002117875A (ja) * 2000-10-11 2002-04-19 Nissan Motor Co Ltd 燃料電池システムの制御装置
JP2003077517A (ja) * 2001-09-03 2003-03-14 Toyota Motor Corp 燃料電池システム
JP2003331895A (ja) * 2002-05-10 2003-11-21 Honda Motor Co Ltd 燃料ガスの供給不足検出方法および燃料電池の制御方法
JP2004079490A (ja) * 2002-08-09 2004-03-11 Equos Research Co Ltd 燃料電池装置
JP2004362825A (ja) * 2003-06-02 2004-12-24 Nissan Motor Co Ltd 燃料電池システム
JP2005327597A (ja) * 2004-05-14 2005-11-24 Toyota Motor Corp 燃料電池システム
JP2005327596A (ja) * 2004-05-14 2005-11-24 Toyota Motor Corp 燃料電池システム
JP2006079891A (ja) * 2004-09-08 2006-03-23 Nissan Motor Co Ltd 燃料電池システム
JP2007035450A (ja) * 2005-07-27 2007-02-08 Toyota Motor Corp 燃料電池システム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009075176A1 (fr) * 2007-12-11 2009-06-18 Toyota Jidosha Kabushiki Kaisha Système de piles à combustible et corps en mouvement

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