WO2008140131A1 - 燃料電池システム - Google Patents
燃料電池システム Download PDFInfo
- Publication number
- WO2008140131A1 WO2008140131A1 PCT/JP2008/059099 JP2008059099W WO2008140131A1 WO 2008140131 A1 WO2008140131 A1 WO 2008140131A1 JP 2008059099 W JP2008059099 W JP 2008059099W WO 2008140131 A1 WO2008140131 A1 WO 2008140131A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel cell
- reference value
- scavenging
- soc
- remaining capacity
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- 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
- H01M8/04604—Power, energy, capacity or load
- H01M8/04626—Power, energy, capacity or load of auxiliary devices, e.g. batteries, capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M16/00—Structural combinations of different types of electrochemical generators
- H01M16/003—Structural combinations of different types of electrochemical generators of fuel cells with other electrochemical devices, e.g. capacitors, electrolysers
- H01M16/006—Structural combinations of different types of electrochemical generators of fuel cells with other electrochemical devices, e.g. capacitors, electrolysers of fuel cells with rechargeable batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04156—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal
-
- 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
- H01M8/04223—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
- H01M8/04253—Means for solving freezing problems
-
- 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
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
- H01M8/04358—Temperature; Ambient temperature of the coolant
-
- 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
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04395—Pressure; Ambient pressure; Flow of cathode reactants at the inlet or inside the fuel cell
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04492—Humidity; Ambient humidity; Water content
-
- 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
- H01M8/04634—Other electric variables, e.g. resistance or impedance
- H01M8/04649—Other electric variables, e.g. resistance or impedance of fuel cell stacks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04955—Shut-off or shut-down of 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- 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.
- an energy source other than the fuel cell is required, and a power storage device that assists the output of the fuel cell, such as a capacitor or a battery, is used as the energy source.
- the power storage device is also used as an energy source when starting up the fuel cell system in addition to the anode scavenging process. For this reason, if the outside air temperature drops after the system shuts down and the fuel cell system needs to be started at a low temperature such as below freezing point, the remaining capacity of the power storage device decreases due to the anode scavenging process. As a result, there has been a problem that the fuel cell system cannot be started at low temperatures such as below freezing.
- Patent Document 1 Japanese Patent Laid-Open No. 2 0 0 6-2 0 2 5 2 0 Disclosure of Invention
- the present invention has been made in view of the circumstances described above, and can ensure the next reliable start-up of the fuel cell system and can suppress unnecessarily long-term scavenging processing.
- the purpose is to provide a battery system.
- a fuel cell system is a fuel cell system that includes a fuel cell and a power storage device, and performs a scavenging process by supplying a predetermined gas into the system.
- First detection means for detecting the remaining water amount of the fuel cell; second detection means for detecting the remaining capacity of the power storage device; first storage means for storing the remaining water amount reference value; and storing the remaining capacity reference value
- scavenging control means for controlling whether or not to end the scavenging process.
- the residual water amount reference value is a residual water amount threshold value representing the amount of water required when the system is started next time
- the residual capacity reference value is A remaining capacity threshold value representing the amount of electric power required when the system is started next time
- the scavenging control means when the remaining water amount falls below the remaining water amount reference value, or the remaining capacity is based on the remaining capacity reference A mode is preferred in which the scavenging process is terminated when the value falls below the value.
- the remaining capacity threshold value varies depending on environmental conditions when the system is started next time.
- the predetermined gas is a fuel gas supplied to the anode of the fuel cell or an oxidizing gas supplied to a power sword of the fuel cell, and the first detection means measures the impedance of the fuel cell. In this case, the amount of the remaining water may be detected.
- FIG. 1 is a diagram showing a configuration of a fuel cell system according to the present embodiment.
- FIG. 2 is a diagram showing a scavenging control function of the control unit according to the embodiment.
- FIG. 3 is a diagram illustrating the relationship between the scavenging time and the measured impedance according to the embodiment.
- FIG. 4 is a flowchart showing a scavenging control process according to the embodiment.
- FIG. 5 is a flowchart showing the scavenging control process according to the first modification.
- FIG. 6 is a flowchart showing the SOC control process according to the second modification.
- FIG. 7 is a diagram showing an example of the relationship between the SOC of the notch and the charge / discharge target capacity according to the modification.
- FIG. 8 is a diagram exemplifying the relationship between the battery SOO and the discharge power upper limit value according to the modification.
- FIG. 1 is a schematic configuration of a vehicle equipped with a fuel cell system 100 according to the present embodiment.
- Fuel Cell Hybrid Vehicle is assumed, but it can also be applied to electric vehicles and hybrid vehicles. Further, it can be applied not only to vehicles but also to various moving bodies (for example, ships, airplanes, robots, etc.), stationary fuel cell systems, and mopile fuel cell systems.
- This vehicle travels using a synchronous motor 61 connected to wheels 6 3 L and 6 3 R as a driving force source.
- the power source of the synchronous motor 61 is a fuel cell 40 or a battery 20.
- the electric power output from the fuel cell 40 and the battery 20 is converted into a three-phase alternating current by the inverter 60 and supplied to the synchronous motor 61.
- 1 can also function as a generator during braking.
- This vehicle travels using a synchronous motor 61 connected to wheels 6 3 L and 6 3 R as a driving force source.
- the power source of the synchronous motor 61 is a fuel cell 40 and a battery 20.
- the electric power output from the fuel cell 40 and the battery 20 is converted into a three-phase alternating current by the inverter 60 and supplied to the synchronous motor 61.
- 1 can also function as a generator during braking.
- the fuel cell 40 is a means for generating electric power from supplied fuel gas and oxidant gas, and has a stack structure in which a plurality of single cells including MEAs including an electrolyte membrane are stacked in series. .
- various types of fuel cells such as a solid polymer type, a phosphoric acid type, and a molten carbonate type can be used.
- the cooling mechanism 70 is a device that cools the fuel cell 40, and includes a pump that pressurizes and circulates the cooling water, a heat exchanger that radiates the heat of the cooling water to the outside (all not shown), and the like. .
- the fuel cell 40 is provided with a flow rate sensor 41 that detects the flow rate of each gas supplied, and a temperature sensor 43 that detects the temperature of the coolant on the fuel cell side (FC outlet temperature).
- the battery (power storage device) 20 is a chargeable / dischargeable secondary battery composed of, for example, a nickel hydrogen battery, assisting the output of the fuel cell 40, and stopping the power generation of the fuel cell 40, etc.
- the stored energy is supplied to the synchronous motor 61, vehicle auxiliary machine 50, FC auxiliary machine 51, etc., and used as an energy source at the next system startup.
- the SOC (State Of Charge) of the battery 20 is detected by the SOC sensor 21, and the detected SOC is managed by the control unit 10.
- various types of secondary batteries can be applied.
- a chargeable / dischargeable capacitor other than the secondary battery for example, a capacitor may be used.
- the battery 20 is interposed in the discharge path of the fuel cell 40 and is connected in parallel with the fuel cell 40.
- the fuel cell 40 and the battery 20 are connected in parallel to the inverter 60.
- the circuit from the fuel cell 40 to the inverter 60 is generated by the current from the battery 20 or the synchronous motor 61.
- a diode 42 is provided to prevent reverse current flow.
- a DC / DC converter 30 is provided between the battery 20 and the inverter 60.
- the DC / DC converter 30 is a direct-current voltage converter that converts the DC voltage input from the battery 20 A function to adjust and output to the fuel cell 40 side and a function to adjust the DC voltage input from the fuel cell 40 or the motor 61 and output to the battery 20 side are provided.
- a vehicle auxiliary machine 50 and an FC auxiliary machine 51 are connected between the battery 20 and the DC / DC converter 30, and the battery 20 serves as a power source for these auxiliary machines.
- the vehicle catcher 50 refers to various power devices used when the vehicle is operated, and includes lighting devices, air conditioning devices, hydraulic pumps, and the like.
- FC auxiliary equipment 51 refers to various electric power equipment used to operate the fuel cell 40, such as a pump for supplying reformed raw materials for fuel gas, a heater for adjusting the temperature of the reformer, etc. included.
- the operation of each element described above is controlled by the control unit 10.
- the control unit 10 is configured as a microcomputer having a CPU, RAM, ROM, and the like inside.
- the control unit 10 controls the operation of the fuel cell 40 and the DCZDC converter 30 so that electric power corresponding to the required power is supplied.
- the control unit 10 includes an accelerator pedal sensor 11, a SOC sensor 21, a flow sensor 41, a temperature sensor 43, an outside air temperature sensor 44 that detects the outside air temperature, a vehicle speed sensor 62 that detects the vehicle speed, and the like. Sensor signal is input. Based on these signals, the control unit 10 centrally controls the system and keeps track of the SOC of the battery 20 at all times. Further, an ignition switch (IG switch) 45 is connected to the control unit 10. Control unit 10 turns on this IG switch 45
- the moisture state (that is, the remaining water amount) of the fuel cell 40 is detected by measuring the impedance of the fuel cell 40, and the battery 20 is detected by the S0C sensor 21. SOC is detected, and scavenging control is implemented to keep the moisture state of the fuel cell 40 properly based on both parameters.
- the scavenging control function according to this embodiment will be described. explain about.
- FIG. 2 is a diagram for explaining the scavenging control function of the control unit 10.
- the control unit 10 includes an impedance calculation unit 14 0, an impedance comparison unit 1 5 0, a scavenging control unit 1 60, and a SOC comparison unit 1 70.
- Scavenging control unit (scavenging control means) 16 0 starts scavenging processing when IG switch 45 is turned off and a power generation stop command for fuel cell 40 is received from IG switch 45.
- the fuel cell 40 power sword has a low humidity oxidant gas, or the fuel cell 40 node has a low
- a scavenging process is performed by supplying a fuel gas of humidity.
- a scavenging process is merely an example, and any method may be adopted as long as moisture remaining in the system can be reduced.
- the impedance comparison unit 1 5 0 is stored in the impedance reference value in S (residual water reference value; see Fig. 3) stored in the memory (first storage means) 1 5 1 and in the measurement memory 1 5 2.
- This impedance reference value i ns is a reference value provided so that the amount of water remaining in the system does not decrease excessively (that is, the electrolyte membrane does not become too dry). It indicates the remaining water threshold that represents the amount of water required for starting.
- the impedance reference value ins is determined in advance through experiments, etc. Desired.
- the SOC comparison unit 150 determines that the SOC comparison should be performed. Notify the comparison unit 1 70.
- the S.OC sensor (second detection means) 21 intermittently detects the S0C of the battery 20, and detects the detected SOC of the battery 20 (hereinafter referred to as the detected SOC) in the SOC memory 1 Store sequentially in 72.
- 300 comparison unit 1 70 stores SOC reference value (remaining capacity reference value) stored in memory (second storage means) 1 71 and SOC memory 1 72. Compare with the stored detection SOC and determine whether the detection SOC is below the SOC reference value.
- This SOC reference value indicates a remaining capacity threshold value that represents the amount of power required when the system is started next time after the system is stopped, and is obtained in advance by experiments or the like.
- the SOC comparison unit 170 notifies the scavenging control unit 160 that the scavenging process should be terminated.
- the SOC reference value may be a fixed value.
- the SOC reference value may be changed according to the outside air temperature (environmental condition) detected by the outside air temperature sensor 44.
- the scavenging control unit (scavenging control means) 160 starts the scavenging process by receiving the power generation stop command of the fuel cell 40 from the IG switch 45 force as described above, while the impedance comparison unit 150 or SOC comparison unit 170 force The scavenging process is terminated according to the above notification.
- the specific control of the scavenging process is to adjust the supply amount of the oxidizing gas and fuel gas supplied to the fuel cell 40, the valve opening degree of the bypass valve (not shown), etc. Is realized. With the configuration described above, it is possible to realize scavenging control that appropriately maintains the amount of water remaining in the fuel cell system 100. Hereinafter, the scavenging control process according to the present embodiment will be described.
- FIG. 4 is a flowchart showing the scavenging control process executed by the control unit 10.
- the scavenging control unit 160 When the scavenging control unit 160 receives a power generation stop command for the fuel cell 40 from the IG switch 45 (that is, a command to turn off the IG switch 45), the scavenging control unit 16 0 starts the scavenging process using the power generation stop command as a trigger ( Step S 1 0 0 ⁇ Step S 2 0 0).
- the impedance calculation unit 14 40 performs impedance measurement intermittently (step S 3 0 0), and the pair of scavenging time and measured impedance (shown in Fig. 3).
- (T, in) (tl, inl), (t 2, in 2, etc.) are sequentially stored in measurement memory 15 2.
- the impedance comparison unit 1 5 0 compares the impedance reference value ins (refer to FIG. 3) stored in the memory 1 5 1 with the measurement impedance stored in the measurement memory 1 5 2. It is determined whether or not the amount of water remaining in the fuel cell 40 is below a threshold value (step S 40 0). As described above, the impedance reference value ins indicates the threshold value of the amount of water remaining in the system. When the impedance comparison unit 15 0 determines that the amount of water remaining in the system has fallen below the threshold value because the measured impedance exceeds the impedance reference value ins (step S 4 0 0; YES), the scavenging process ends.
- the scavenging control unit 1 6 0 is notified that it should be performed (step S 6 0 0).
- the scavenging control unit 16 ⁇ terminates the scavenging process, for example, by stopping the supply of the oxidizing gas or the fuel gas based on the notification from the impedance comparison unit 150.
- the impedance comparison unit 1 5 0 determines the moisture remaining in the system when the measured impedance is lower than the impedance reference value ins. If it is determined that the amount has not yet fallen below the threshold (step S 400; NO), the 300 comparison unit 170 is notified that 300 comparison should be performed.
- comparison unit 1 70 compares the S0C reference value stored in memory 1 71 with the detected SOC stored in SOC memory 172 according to the notification from impedance comparison unit 150, It is determined whether the detection S0C is below the SOC reference value (step S500). As described above, the SOC standard value indicates a threshold value for securing the amount of power necessary for starting the fuel cell 40 next time after the system is stopped. When the detected SOC is not lower than the reference value (Step S500; NO), the S0C comparison unit 1 70 returns to Step S300 to indicate that the impedance comparison should be performed. Notify 50.
- the SOC comparison unit 170 notifies the scavenging control unit 160 that the scavenging process should be terminated (step S500). S 600).
- the scavenging control unit 160 ends the scavenging process by stopping the supply of oxidizing gas and fuel gas based on the notification from the impedance comparison unit 150.
- the operation state of the fuel cell 40 before the IG switch 45 is turned off is not particularly mentioned. However, the operation state (operation mode) of the fuel cell 40 before the IG switch 45 is turned off. ) Change scavenging control according to You may do it.
- FIG. 5 is a flowchart showing a scavenging control process according to the first modification.
- the scavenging control process shown in FIG. 5 has steps S 1 0 0 a and S 1 0 0 b added to the scavenging control process shown in FIG. Since the other steps are the same as those in Fig. 4, the corresponding steps are denoted by the same reference numerals, and detailed description is omitted.
- the scavenging control unit 1600 receives a power generation stop command for the fuel cell 40 from the IG switch 45 (that is, a command to turn off the IG switch 45), it stops power generation of the fuel cell 40 according to this command.
- step S 1 0 0 ⁇ step S 1 0 0 a There are two types of operation modes of the fuel cell 40: normal operation mode and low temperature operation mode.
- the low-temperature operation mode refers to an operation mode that performs control (such as moisture content control or electrolyte membrane drying control) for the purpose of improving startability in a low-temperature environment.
- the normal operation mode is an operation other than the low-temperature mode. Refers to the mode.
- Switching between these two operation modes is performed based on the outside air temperature detected by the outside air temperature sensor 44. More specifically, the control mute 10 operates in the normal operation mode when the detected outside air temperature exceeds the threshold value, and operates in the low temperature operation mode when the outside air temperature falls below the threshold value. I do.
- the threshold value to be set may be obtained in advance through experiments or the like. Instead of (or in addition to) this, the operation mode may be switched based on the operation of a low temperature switch (not shown) by the user.
- the scavenging control unit 1600 determines that the normal operation mode is set in step S1OOa, it performs normal scavenging processing considering normal start instead of low temperature start (step S1 0 0 b ), And end the scavenging process (step S 6 0 0).
- the normal scavenging process is a process in which scavenging is performed for a set time without considering the SOC of the battery 20.
- the scavenging control unit 160 has a low temperature operation mode in step S1 0 0 a. If it is determined that the low-temperature scavenging process is performed (step S 2 0 0 to step S 5 0 0), the scavenging process is terminated (step S 6 0 0). Note that details regarding the low temperature scavenging process have been clarified in the present embodiment, and a further description thereof will be omitted. As described above, according to the configuration according to the modified example 1, it is possible to realize the optimum scavenging control in accordance with the operation mode of the fuel cell 40.
- SOC of the battery 20 is not particularly mentioned, but the control of the SOC of the battery 20 may be changed according to the operation mode of the fuel cell 40.
- FIG. 6 is a flowchart showing SOC control processing according to the second modification. This SOC control process is intermittently executed by the control unit 10 while the fuel cell 40 is operating.
- the control unit 10 confirms the operation mode of the fuel cell 40 at that time (step S 2 0 0).
- the control unit 10 is controlled in the low temperature operation mode while performing the control of the battery 20 during the normal operation (step S 2 2 0). If it is determined, SOC control of the battery 20 during low temperature operation is performed (step S210).
- Figure 7 illustrates the relationship between battery SOC and battery charge / discharge target power in each operation mode.
- Figure 8 illustrates the relationship between battery SOC and battery discharge capacity upper limit value in each operation mode.
- the next start in the low temperature environment is a prerequisite. Therefore, when operating in the low temperature operation mode, it is necessary to secure the battery so C required for the next start in a low temperature environment. Therefore, as shown in Fig. 7, the SOC control value of battery 20 in the low temperature operation mode is higher than the SOC control value of battery 20 in the normal operation mode (SOC1, SOC2 shown in Fig. 7). reference).
- the upper limit value of the discharge power of the battery 20 in the low temperature operation mode is higher than the upper limit value of the discharge power of the battery 20 in the normal operation mode. (Refer to P bl and P b 2 shown in Fig. 8).
- the oxidant gas and the fuel gas are exemplified as the gas supplied to the fuel cell during the scavenging process.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fuel Cell (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200880016058A CN101682055A (zh) | 2007-05-14 | 2008-05-13 | 燃料电池系统 |
US12/595,015 US20100119898A1 (en) | 2007-05-14 | 2008-05-13 | Fuel cell system |
DE112008001248T DE112008001248T5 (de) | 2007-05-14 | 2008-05-13 | Brennstoffzellensystem |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007128136A JP2008282767A (ja) | 2007-05-14 | 2007-05-14 | 燃料電池システム |
JP2007-128136 | 2007-05-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008140131A1 true WO2008140131A1 (ja) | 2008-11-20 |
Family
ID=40002318
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/059099 WO2008140131A1 (ja) | 2007-05-14 | 2008-05-13 | 燃料電池システム |
Country Status (6)
Country | Link |
---|---|
US (1) | US20100119898A1 (ja) |
JP (1) | JP2008282767A (ja) |
KR (1) | KR20090128552A (ja) |
CN (1) | CN101682055A (ja) |
DE (1) | DE112008001248T5 (ja) |
WO (1) | WO2008140131A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130052545A1 (en) * | 2010-05-07 | 2013-02-28 | Toyota Jidosha Kabushiki Kaisha | Fuel cell system with calculation of liquid water volume |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5168148B2 (ja) * | 2006-11-10 | 2013-03-21 | 日本電気株式会社 | 無線通信装置 |
JP4868240B2 (ja) * | 2007-05-10 | 2012-02-01 | トヨタ自動車株式会社 | 燃料電池システム |
JP4894608B2 (ja) * | 2007-05-10 | 2012-03-14 | トヨタ自動車株式会社 | 燃料電池システム |
JP4478707B2 (ja) * | 2007-09-06 | 2010-06-09 | 本田技研工業株式会社 | 燃料電池車両 |
JP5510060B2 (ja) | 2010-05-20 | 2014-06-04 | トヨタ自動車株式会社 | 燃料電池システム及び燃料電池システムの制御方法 |
KR101452837B1 (ko) * | 2012-04-30 | 2014-10-23 | 엘아이지넥스원 주식회사 | 캠핑트레일러에 전원을 공급하기 위한 연료전지 시스템 및 그 방법 |
DE102013210098A1 (de) | 2012-06-04 | 2013-12-05 | Honda Motor Co., Ltd. | Brennstoffzellen-System und Brennstoffzellen-System-Steuer-/Regelverfahren |
JP5531052B2 (ja) * | 2012-06-04 | 2014-06-25 | 本田技研工業株式会社 | 燃料電池システムおよび燃料電池システムの制御方法 |
DE102014208229A1 (de) * | 2014-04-30 | 2015-11-05 | Volkswagen Ag | Verfahren zum Betreiben einer Brennstoffzellenvorrichtung und Brennstoffzellenvorrichtung mit Ladebegrenzer |
JP6161580B2 (ja) * | 2014-06-30 | 2017-07-12 | 本田技研工業株式会社 | 燃料電池システム及び燃料電池車両 |
KR20180069513A (ko) * | 2016-12-15 | 2018-06-25 | 엘지이노텍 주식회사 | 물체 감지 센서 및 이를 포함하는 차량 안전 장치 |
US10770761B2 (en) * | 2017-02-20 | 2020-09-08 | Toyota Jidosha Kabushiki Kaisha | Fuel cell control device, control method thereof, and fuel cell vehicle |
JP6982787B2 (ja) * | 2017-02-20 | 2021-12-17 | トヨタ自動車株式会社 | 燃料電池制御装置およびその制御方法、燃料電池自動車 |
CN109560309A (zh) * | 2017-09-25 | 2019-04-02 | 郑州宇通客车股份有限公司 | 一种燃料电池及其自增湿水管理系统和方法 |
JP7110905B2 (ja) * | 2018-10-22 | 2022-08-02 | トヨタ自動車株式会社 | 燃料電池システム |
JP6787970B2 (ja) * | 2018-10-22 | 2020-11-18 | 本田技研工業株式会社 | 燃料電池システム及びその制御方法 |
JP7298541B2 (ja) * | 2020-05-19 | 2023-06-27 | トヨタ自動車株式会社 | 燃料電池システム |
CN116154227B (zh) * | 2023-04-20 | 2023-07-07 | 上海氢晨新能源科技有限公司 | 车辆用燃料电池的排水控制方法和车辆 |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002208421A (ja) * | 2001-01-09 | 2002-07-26 | Denso Corp | 燃料電池システム |
JP2003086220A (ja) * | 2001-09-12 | 2003-03-20 | Denso Corp | 燃料電池システム |
JP2003297399A (ja) * | 2002-04-02 | 2003-10-17 | Nissan Motor Co Ltd | 燃料電池システム |
JP2004152600A (ja) * | 2002-10-30 | 2004-05-27 | Honda Motor Co Ltd | 燃料電池の停止方法および停止装置 |
JP2004199988A (ja) * | 2002-12-18 | 2004-07-15 | Nissan Motor Co Ltd | 燃料電池システム |
JP2004207139A (ja) * | 2002-12-26 | 2004-07-22 | Nissan Motor Co Ltd | 燃料電池水分排出装置 |
JP2005209634A (ja) * | 2003-12-26 | 2005-08-04 | Honda Motor Co Ltd | 燃料電池の運転停止時制御方法及びその装置 |
JP2006179472A (ja) * | 2004-11-29 | 2006-07-06 | Honda Motor Co Ltd | 燃料電池システム及び蓄電装置の充電制御方法 |
JP2006202520A (ja) * | 2005-01-18 | 2006-08-03 | Honda Motor Co Ltd | 燃料電池システムの停止方法及び燃料電池システム |
JP2006244865A (ja) * | 2005-03-03 | 2006-09-14 | Honda Motor Co Ltd | 燃料電池システム |
JP2007042313A (ja) * | 2005-08-01 | 2007-02-15 | Honda Motor Co Ltd | 燃料電池システム及び蓄電装置の充電量調整方法 |
JP2007157621A (ja) * | 2005-12-08 | 2007-06-21 | Denso Corp | 燃料電池システム |
-
2007
- 2007-05-14 JP JP2007128136A patent/JP2008282767A/ja not_active Withdrawn
-
2008
- 2008-05-13 CN CN200880016058A patent/CN101682055A/zh active Pending
- 2008-05-13 KR KR1020097023448A patent/KR20090128552A/ko not_active Application Discontinuation
- 2008-05-13 DE DE112008001248T patent/DE112008001248T5/de not_active Withdrawn
- 2008-05-13 US US12/595,015 patent/US20100119898A1/en not_active Abandoned
- 2008-05-13 WO PCT/JP2008/059099 patent/WO2008140131A1/ja active Application Filing
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002208421A (ja) * | 2001-01-09 | 2002-07-26 | Denso Corp | 燃料電池システム |
JP2003086220A (ja) * | 2001-09-12 | 2003-03-20 | Denso Corp | 燃料電池システム |
JP2003297399A (ja) * | 2002-04-02 | 2003-10-17 | Nissan Motor Co Ltd | 燃料電池システム |
JP2004152600A (ja) * | 2002-10-30 | 2004-05-27 | Honda Motor Co Ltd | 燃料電池の停止方法および停止装置 |
JP2004199988A (ja) * | 2002-12-18 | 2004-07-15 | Nissan Motor Co Ltd | 燃料電池システム |
JP2004207139A (ja) * | 2002-12-26 | 2004-07-22 | Nissan Motor Co Ltd | 燃料電池水分排出装置 |
JP2005209634A (ja) * | 2003-12-26 | 2005-08-04 | Honda Motor Co Ltd | 燃料電池の運転停止時制御方法及びその装置 |
JP2006179472A (ja) * | 2004-11-29 | 2006-07-06 | Honda Motor Co Ltd | 燃料電池システム及び蓄電装置の充電制御方法 |
JP2006202520A (ja) * | 2005-01-18 | 2006-08-03 | Honda Motor Co Ltd | 燃料電池システムの停止方法及び燃料電池システム |
JP2006244865A (ja) * | 2005-03-03 | 2006-09-14 | Honda Motor Co Ltd | 燃料電池システム |
JP2007042313A (ja) * | 2005-08-01 | 2007-02-15 | Honda Motor Co Ltd | 燃料電池システム及び蓄電装置の充電量調整方法 |
JP2007157621A (ja) * | 2005-12-08 | 2007-06-21 | Denso Corp | 燃料電池システム |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130052545A1 (en) * | 2010-05-07 | 2013-02-28 | Toyota Jidosha Kabushiki Kaisha | Fuel cell system with calculation of liquid water volume |
US9444115B2 (en) * | 2010-05-07 | 2016-09-13 | Toyota Jidosha Kabushiki Kaisha | Fuel cell system with calculation of liquid water volume |
Also Published As
Publication number | Publication date |
---|---|
JP2008282767A (ja) | 2008-11-20 |
DE112008001248T5 (de) | 2010-03-11 |
CN101682055A (zh) | 2010-03-24 |
US20100119898A1 (en) | 2010-05-13 |
KR20090128552A (ko) | 2009-12-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2008140131A1 (ja) | 燃料電池システム | |
US6893757B2 (en) | Fuel cell apparatus and method of controlling fuel cell apparatus | |
CN101569044B (zh) | 燃料电池系统 | |
US11108063B2 (en) | Fuel cell system | |
CA2673042C (en) | Fuel cell system for impedance measurement | |
US8221924B2 (en) | Fuel cell system | |
US9337502B2 (en) | Fuel cell system and control method at starting in the fuel cell system | |
JP4977342B2 (ja) | 燃料電池システム及び蓄電装置の充電量調整方法 | |
JP5783324B2 (ja) | 燃料電池システム | |
JP5543840B2 (ja) | 電動車両 | |
KR20090058028A (ko) | 연료전지 시스템 | |
WO2007066531A1 (ja) | 燃料電池システム及び移動体 | |
US10840527B2 (en) | Power supply system and control method thereof | |
JP4895023B2 (ja) | 燃料電池システム | |
US9849805B2 (en) | Fuel cell vehicle | |
JP2007035517A (ja) | 燃料電池システム及び凍結防止方法 | |
JP2010239743A (ja) | 発電システムおよび発電システムの運転停止方法 | |
JP2008034309A (ja) | 燃料電池システム | |
JP2010238474A (ja) | 燃料電池システム | |
WO2008093874A1 (ja) | 燃料電池システム | |
JP5288200B2 (ja) | 燃料電池システム及びその制御方法 | |
JP5222121B2 (ja) | 燃料電池システム |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200880016058.8 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08764335 Country of ref document: EP Kind code of ref document: A1 |
|
DPE2 | Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 12595015 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 20097023448 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1120080012482 Country of ref document: DE |
|
RET | De translation (de og part 6b) |
Ref document number: 112008001248 Country of ref document: DE Date of ref document: 20100311 Kind code of ref document: P |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 08764335 Country of ref document: EP Kind code of ref document: A1 |