WO2009057534A1 - 燃料電池システム、および、燃料電池システムの起動制御方法 - Google Patents
燃料電池システム、および、燃料電池システムの起動制御方法 Download PDFInfo
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- WO2009057534A1 WO2009057534A1 PCT/JP2008/069384 JP2008069384W WO2009057534A1 WO 2009057534 A1 WO2009057534 A1 WO 2009057534A1 JP 2008069384 W JP2008069384 W JP 2008069384W WO 2009057534 A1 WO2009057534 A1 WO 2009057534A1
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- WIPO (PCT)
- Prior art keywords
- fuel cell
- reaction gas
- cell system
- supply
- gas supply
- 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
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04537—Electric variables
- H01M8/04544—Voltage
- H01M8/04559—Voltage of fuel cell stacks
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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
- H01M8/04223—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
- H01M8/04298—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
- H01M8/0438—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
- H01M8/04664—Failure or abnormal function
- H01M8/04679—Failure or abnormal function of fuel cell stacks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- the present invention relates to a fuel cell system and a startup control method of the fuel cell system.
- a fuel cell that generates electricity by an electrochemical reaction between a fuel gas (for example, hydrogen) and an oxidant gas (for example, oxygen) has attracted attention as an energy source.
- a fuel gas for example, hydrogen
- an oxidant gas for example, oxygen
- a reaction gas fuel gas and oxidant gas used for power generation
- the open circuit voltage of the fuel cell is reduced.
- it is determined whether or not the fuel cell has become connectable to the load that is, whether or not the open circuit voltage of the fuel cell has increased to a predetermined voltage. 5-3 0 2 5 3 9).
- the present invention has been made to solve the above-described problems, and provides a fuel cell system.
- the purpose is to accurately determine the power generation abnormality in the fuel cell at startup.
- the present invention can be realized as the following forms or application examples in order to solve at least a part of the problems described above.
- a fuel cell system comprising: a fuel cell; a reaction gas supply unit that supplies a reaction gas for power generation to the fuel cell; and at the start of the fuel cell system, the reaction gas supply unit A reaction gas supply completion determination unit that determines whether or not the supply of the reaction gas to the fuel cell is completed; and after the reaction gas supply completion determination unit determines that the supply of the reaction gas is completed
- a fuel cell system comprising: a power generation abnormality determination unit that determines presence or absence of power generation abnormality in the fuel cell based on an open circuit voltage of the fuel cell.
- the open circuit voltage of the fuel cell is measured, and the power generation abnormality in the fuel cell is measured based on the measured open circuit voltage. The presence or absence of is determined. Therefore, the power generation abnormality in the fuel cell can be accurately determined when the fuel cell system is started.
- the open circuit voltage of the fuel cell is measured after the supply of the reaction gas to the fuel cell is completed, there is an abnormality in the reaction gas supply unit (reaction gas supply system). Whether the circuit voltage does not rise to the specified voltage or because the fuel cell itself is abnormal, isolates whether the open circuit voltage of the fuel cell does not increase to the specified voltage, and accurately determines power generation abnormality in the fuel cell can do. Then, when a power generation abnormality in the fuel cell is determined, so-called fail safe mode control can be performed.
- the first predetermined time can be arbitrarily set within a range in which the open circuit voltage of the fuel cell is assumed to reach the predetermined voltage if there is no power generation abnormality in the fuel cell.
- Application Example 3 The fuel cell system according to Application Example IV or 2, further comprising a pressure detection unit that detects the pressure of the reaction gas supplied to the fuel cell, and determining whether the reaction gas has been supplied. The fuel cell system determines whether or not the supply of the reaction gas to the fuel cell is completed based on the pressure of the reaction gas detected by the pressure detection unit.
- reaction gas supply unit reaction gas supply system
- reaction gas supply unit reaction gas supply Therefore, it is possible to suppress erroneous determination of abnormality in the reactive gas supply unit.
- the second predetermined time can be arbitrarily set within a range in which the reaction gas pressure is assumed to reach the predetermined pressure without any abnormality in the reaction gas supply unit.
- Application Example 5 The fuel cell system according to (1) or (2), further including a flow rate detection unit that detects a flow rate of the reaction gas supplied to the fuel cell, and the reaction gas The supply completion determination unit determines whether or not the supply of the reaction gas to the fuel cell is completed based on the flow rate of the reaction gas detected by the flow rate detection unit.
- reaction gas supply unit reaction gas supply system
- reaction gas supply completion determination unit is further configured to start supplying the reaction gas to the fuel cell by the reaction gas supply unit. 2. The fuel cell system, wherein when the flow rate of the reaction gas does not reach the predetermined flow rate within a predetermined time of 2, the reaction gas supply unit determines that there is an abnormality.
- reaction gas supply unit reaction gas supply Therefore, it is possible to suppress erroneous determination of abnormality in the reactive gas supply unit.
- the second predetermined time can be set arbitrarily within the range where the flow rate of the reaction gas is expected to reach the specified flow rate if there is no abnormality in the reaction gas supply and supply section.
- reaction gas supply unit reaction gas supply system
- the present invention may be configured by appropriately combining some of the various features mentioned above. it can.
- the present invention can also be configured as an invention of a startup control method for a fuel cell system.
- it can be realized in various modes such as a computer program that realizes these, a recording medium that records the program, and a data signal that includes the program and is embodied in a carrier wave.
- the various additional elements shown above can be applied.
- the present invention is configured as a computer program or a recording medium that records the program
- the entire program for controlling the operation of the fuel cell system may be configured, or only the portion that performs the functions of the present invention. It can also be configured.
- Recording media include flexible disks, CD-ROMs, DVD-ROMs, magneto-optical disks, IC cards, ROM cartridges, punched cards, printed codes printed with codes such as barcodes, and computer internal storage devices ( Various types of computer-readable media such as RAM and ROM) and external storage devices can be used.
- FIG. 1 is an explanatory diagram showing a schematic configuration of a fuel cell system 100 having a fuel cell stack 100 as an embodiment of the present invention.
- FIG. 2 is an explanatory diagram showing function blocks in the control unit 90 for executing the activation control process of the first embodiment.
- FIG. 3 is a flowchart showing the flow of the start control process of the first embodiment.
- FIG. 4 is an explanatory diagram showing functional blocks in the control unit 9 O A for executing the startup control process of the second embodiment.
- FIG. 5 is a flowchart showing the flow of the activation control process of the second embodiment.
- FIG. 2 is an explanatory diagram showing a schematic configuration of a fuel cell system 100 including a fuel cell stack 100 as an embodiment of the present invention.
- the fuel cell stack 100 has a stack structure in which a plurality of fuel cell modules 40 that generate electricity by an electrochemical reaction between hydrogen and oxygen are stacked.
- Each fuel cell module 40 generally has a configuration in which a membrane electrode assembly in which an anode and a force sword are joined to both sides of an electrolyte membrane having proton conductivity is sandwiched between separators.
- Each of the anode and the force sword includes a catalyst layer bonded to each surface of the electrolyte membrane and a gas diffusion layer bonded to the surface of the catalyst layer.
- a solid polymer film such as naphthion (registered trademark) is used as the electrolyte film.
- As the electrolyte membrane another electrolyte membrane such as a solid oxide may be used.
- a flow path of hydrogen as a fuel gas to be supplied to the anode a flow path of air as an oxidant gas to be supplied to the power sword, and a flow path of cooling water are formed.
- the number of stacked fuel cell modules 40 can be arbitrarily set according to the output required for the fuel cell stack 100.
- the fuel cell stack 1 0 0 has an end plate 1 0 a, an insulating plate 2 0 a, a current collecting plate 3 0 a, a plurality of fuel cell modules 4 0, a current collecting plate 3 0 b, and an insulating plate 2 0 b, End plate ⁇ 1 0 b It is constructed by laminating in order. These are provided with a supply port and a discharge port for flowing hydrogen, air, and cooling water in the fuel cell stack 100. Also, in the fuel cell stack ⁇ 0 0, supply manifolds (hydrogen supply manifolds, air) for distributing and supplying hydrogen, air, and cooling water to the respective fuel cell modules 40 are provided.
- supply manifolds hydrogen supply manifolds, air
- each fuel A discharge manifold anode off-gas discharge mask for collecting anode off-gas and power sword off-gas discharged from the anode and cathode of the battery module 40 and cooling water and discharging them outside the fuel cell stack 100 2 hold, force sword off gas discharge manifold, cooling water discharge manifold hold).
- the end braces 1 0 a and 1 0 b are made of metal such as heels to ensure rigidity.
- the insulating plates 20 a and 2 O b are formed of an insulating member such as rubber or resin.
- the current collector plates 30a and 3Ob are formed of dense carbon or a gas-impermeable conductive member such as a copper plate.
- the current collector plates 30a and 30b are provided with output terminals (not shown), respectively, so that the power generated by the fuel cell stack 100 can be output. Further, a voltmeter 80 for measuring the open circuit voltage of the fuel cell stack 100 is connected to the current collector plates 30 a and 3 Ob.
- the fuel cell stack 100 is designed to suppress a decrease in cell performance due to an increase in contact resistance at any part of the stack structure or to suppress gas leakage.
- a predetermined fastening load is applied, and it is fastened by the $ Imperial member.
- Hydrogen as fuel gas is supplied to the anode of the fuel cell stack 100 from a hydrogen tank 50 storing high-pressure hydrogen via a hydrogen supply pipe 53.
- a hydrogen-rich gas may be generated by a reforming reaction using alcohol, hydrocarbon, aldehyde or the like as a raw material, and supplied to the anode.
- the hydrogen supply pipe 5 3 includes a pressure sensor PS h for detecting the pressure of hydrogen supplied to the fuel cell stack 100 and a flow rate for detecting the flow rate of hydrogen supplied to the fuel cell stack 100.
- Sensor FS h or ' is installed.
- the high-pressure hydrogen stored in the hydrogen tank 50 is controlled by the shut valve 51 at the outlet of the hydrogen tank 50 and the pressure regulator 52 and the supply amount is adjusted to hold the hydrogen supply manifold.
- the anode off gas discharged from each fuel cell module 40 can be discharged to the outside of the fuel cell stack 100 via the discharge pipe 56 connected to the anode off gas discharge manifold.
- hydrogen contained in the anode off gas is processed by a diluter or the like (not shown).
- a circulation pipe 5 4 for recirculating the anode off gas to the hydrogen supply pipe 53 is connected to the hydrogen supply pipe 53 and the discharge pipe 56.
- An exhaust valve 5 7 is disposed on the downstream side of the connection portion of the discharge pipe 56 with the circulation pipe 54.
- the circulation pipe 5 4 is provided with a pump 55. By controlling the driving of the pump 55 and the exhaust valve 57, it is possible to appropriately switch whether the anode off gas is discharged to the outside or circulated through the hydrogen supply pipe 53. By recirculating the anode off gas to the hydrogen supply pipe 53, unconsumed hydrogen contained in the anode off gas can be used efficiently.
- the compressed air compressed by the air conditioner 60 is supplied to the power sword of the fuel cell stack 100 as an oxidant gas containing oxygen through the air supply pipe 61.
- the compressed air is supplied to the power sword of each fuel cell module 40 through the air supply manifold connected to the air supply pipe 61.
- Cathode off-gas discharged from the cathode of each fuel cell module 40 is discharged to the outside of the fuel cell stack 100 via a discharge pipe 62 connected to the cathode gas exhaust manifold. From the discharge pipe 62, the generated water generated by the electrochemical reaction between hydrogen and oxygen is discharged together with the power sword-off gas at the cathode of the fuel cell stack 100.
- the air supply pipe 61 is provided with a flow sensor FSa for detecting the flow rate of the air supplied to the fuel cell stack 100.
- a pressure sensor PSa that indirectly detects the pressure of air supplied to the fuel cell stack 100 is disposed in the discharge pipe 62. Since the fuel cell stack 100 generates heat by the above-described electrochemical reaction, cooling water for cooling the fuel cell stack 100 is also supplied to the fuel cell stack 100. This cooling water flows through the pipe 72 by the pump 70, is cooled by the Laje evening 71, and is supplied to the fuel cell stack 100.
- the operation of the fuel cell system 000000 is controlled by the control unit 90.
- the control unit 90 is configured as a microcomputer equipped with a CPU, RAM, ROM, evening camera, etc., and according to the program stored in the ROM, for example, various valve and pump operation, etc. To control.
- the control unit 90 performs a startup control process, which will be described later, based on the outputs of the pressure sensors PS h and PS a, the flow sensors FS h and FS a, and the voltmeter 80 when the fuel cell system 1 000 is started. To do. A2. Control unit:
- FIG. 2 is an explanatory diagram showing function blocks in the control unit 90 for executing the activation control process of the first embodiment.
- the control unit 90 includes a reaction gas supply completion determination unit 92, a power generation abnormality determination unit 94, and a timer 96.
- the reaction gas supply completion determination unit 92 determines whether the pressure of hydrogen and the pressure of air supplied to the fuel cell stack 100 detected by the pressure sensor PS h and the pressure sensor PS a are respectively Based on whether or not the predetermined pressure has been reached, it is determined whether or not the supply of hydrogen and air to the fuel cell stack 100 has been completed.
- the power generation abnormality determination unit 94 determines whether there is a power generation abnormality in the fuel cell stack ⁇ 00.
- the Eima 96 is the time elapsed since the start of the supply of the reaction gas (hydrogen and air) to the fuel cell stack 100, and the completion of the supply of the reaction gas to the fuel cell stack 100. Measure elapsed time.
- the activation control process of the first embodiment will be described in detail.
- FIG. 3 is a flowchart showing the flow of start-up control processing of the fuel cell system 1000 according to the first embodiment. This process is executed by the CPU of the control unit 90 when the fuel cell system 1 000 is started.
- the CPU controls various valves and pumps to supply reaction gas (hydrogen and air) to the fuel cell stack 100. (Step S 1 00). At this time, the CPU uses the timer 96 to measure the elapsed time from the start of the supply of the reaction gas to the fuel cell stack 100.
- the CPU detects the pressure of hydrogen supplied to the fuel cell stack 100 and the pressure of air using the pressure sensors PS h and PS a, respectively (step S 1 1 0), and determines whether or not the reaction gas supply is completed.
- the unit 92 determines whether or not the hydrogen pressure and the air pressure respectively reach predetermined pressures (step S 120). Note that the predetermined pressure for hydrogen and the predetermined pressure for air are set individually in advance.
- the supply completion determination unit 92 refers to the timer 96 to determine whether or not a predetermined time T 2 has elapsed from the start of supply of the reaction gas to the fuel cell stack 00 (step S 1 30).
- the predetermined time T 2 can be arbitrarily set within a range in which the reaction gas pressure is assumed to reach the predetermined pressure if there is no abnormality in the reaction gas supply system.
- This predetermined time T2 corresponds to the second predetermined time in the present invention. If the predetermined time T2 has not elapsed since the start of the supply of the reaction gas to the fuel cell stack 100 (step S730: NO), the process returns to step S110.
- step S 1 30 when the predetermined time T 2 has elapsed since the start of the supply of the reaction gas to the fuel cell stack 100 (step S 1 30: YES), the CPU has an abnormality in the reaction gas supply system. There is an abnormality in the hydrogen supply system when the hydrogen pressure does not reach the predetermined pressure, and there is an abnormality in the air supply system when the air pressure does not reach the predetermined pressure. Accordingly, connection of the load to the fuel cell stack 100 is prohibited (step S 1 3 2), and the supply of the reaction gas is stopped by controlling various valves and pumps (step S 140). In this case, the CPU prohibits the determination of the presence or absence of power generation abnormality in the fuel cell stack 00 described later. Then, the CPU ends the start control process.
- step S 120 when the pressure of hydrogen supplied to the fuel cell stack 100 and the pressure of air reach predetermined pressures (step S 120: Y ES), the CPU The reaction gas supply completion determination unit 92 determines that the supply of the reaction gas to the fuel cell stack 100 is completed, and the voltmeter 80 measures the open circuit voltage OC V of the fuel cell stack 100 (step S 1 50) Get. At this time, the CPU resets the timer 96 and starts measuring the elapsed time from the completion of the supply of the reaction gas to the fuel cell stack 100.
- the CPU determines whether or not the open circuit voltage OCV of the fuel cell stack 100 has become equal to or higher than the predetermined voltage OCV hh by the power generation abnormality determination unit 94 (step)
- step S 1 60 When the open circuit voltage OCV exceeds the specified voltage OC V th (step S 1 60: YES), the CPU determines that there is no power generation abnormality in the fuel cell stack 100, and the fuel cell stack Allow connection of load to 1 00 (step S 1 6 2). Then, the CPU ends the activation control process.
- step S 1 60 when the open circuit voltage OC V of the fuel cell stack ⁇ ⁇ 00 is less than the predetermined voltage OCV th (step S 1 60: NO), the CPU determines that the power generation abnormality determination unit 94 With reference to the timer 96, it is determined whether or not a predetermined time 1 has elapsed since the completion of the supply of the reaction gas to the fuel cell stack 100 (step S 1 70).
- the predetermined time T 1 is within a range in which the open circuit voltage OCV of the fuel cell stack 100 is assumed to reach the predetermined voltage OC V th if there is no power generation abnormality in the fuel cell stack 100. It can be set arbitrarily. This predetermined time T 1 corresponds to the first predetermined time in the present invention. If the predetermined time T1 has not passed since the completion of the supply of the reaction gas to the fuel cell stack 100 (step S170: NO), the process returns to step S150.
- step S 1 70 On the other hand, if the predetermined time T 1 has elapsed since the completion of the supply of the reaction gas to the fuel cell stack 100 (step S 1 70), the CPU has a power generation abnormality in the fuel cell stack 100. Therefore, the connection of the load to the fuel cell stack 100 is prohibited (step S 1 72), and the supply of the reaction gas is stopped by controlling various valves and pumps (step S 140). Then, the CPU ends the start control process.
- the fuel cell stack 1 00 in the start-up control process of the fuel cell system 1 000, after the supply of the reaction gas to the fuel cell stack 100 is completed, the fuel cell stack 1 00 The open circuit voltage OCV is measured, and the presence or absence of power generation abnormality in the fuel cell stack 100 is determined based on the measured open circuit voltage OCV. Therefore, the power generation abnormality in the fuel cell stack 100 can be accurately determined when the fuel cell system 000 is started.
- the open circuit voltage OC V of the fuel cell stack 100 is measured after the supply of the reaction gas to the fuel cell stack 100 is completed, there is an abnormality in the reaction gas supply system.
- the open circuit voltage OCV of the stack 100 does not rise to the predetermined voltage OC V th, or the fuel cell stack 100 itself has an abnormality, so the open circuit voltage OCV of the fuel cell stack 100 becomes the predetermined voltage OC V It is possible to accurately determine the power generation abnormality in the fuel cell stack 100 by separating whether it rises to th.
- so-called fail-safe mode control in this embodiment, supply of reactive gas is stopped) can be performed.
- the open circuit voltage OCV of the fuel cell stack 100 is determined within a predetermined time T 1 after it is determined that the supply of the reaction gas to the fuel cell stack 100 is completed. If the battery does not reach the specified voltage OCV th, the fuel cell stack 1 Since it is determined that there is a power generation abnormality at 0 0, erroneous determination of power generation abnormality in the fuel cell stack 100 can be suppressed.
- the configuration of the fuel cell system of the second embodiment is substantially the same as the configuration of the fuel cell system 1 0 0 0 of the second embodiment. Therefore, the description of the configuration of the fuel cell system of the second embodiment is omitted. However, in the fuel cell system of the second embodiment, a part of the start control process is different from the start control process in the first embodiment. Hereinafter, the control unit and start control processing of the second embodiment will be described.
- FIG. 4 is an explanatory diagram showing a function block in the control unit 90 A for executing the activation control process of the second embodiment.
- the control unit 9 O A includes a reaction gas supply completion determination unit 9 2 A, a power generation abnormality determination unit 94, and a timer 96.
- the reaction gas supply completion determination unit 9 2 A has a flow rate of hydrogen and a flow rate of air supplied to the fuel cell stack 100 detected by the flow rate sensor FS h and the flow rate sensor FS a, respectively. Whether or not the supply of hydrogen and air to the fuel cell stack 100 is completed is determined based on whether or not a predetermined flow rate has been reached. Departure The functions of the electric abnormality determination unit 94 and the timer 96 are the same as those in the first embodiment.
- FIG. 5 is a flowchart showing the flow of activation control processing in the second embodiment. This process is executed by the CPU 90 of the control unit 90 when the fuel cell system 1 000 is started.
- the CPU detects the flow rate of hydrogen and the flow rate of air supplied to the fuel cell stack 100 by the flow rate sensors FS and FS a, respectively.
- the reaction gas supply completion determination unit 92 A determines whether the flow rate of hydrogen and the flow rate of air have reached the predetermined flow rates (Step S 20 A).
- the predetermined flow rate for hydrogen and the predetermined flow rate for air are set individually in advance.
- step S 1 20 AN 0 If at least one of the flow rate of hydrogen supplied to the fuel cell stack ⁇ 00 and the flow rate of air does not reach the predetermined flow rate (step S 1 20 AN 0), the CPU performs step SI. Proceed to 30. On the other hand, when the flow rate of hydrogen supplied to the fuel cell stack 100 and the flow rate of air reach the predetermined pressure (step S 1 20 A: YES), the CPU proceeds to step S 1 50. move on.
- the reaction to the fuel cell stack 100 is performed in the start-up control process of the fuel cell system.
- the open circuit voltage OCV of the fuel cell stack 100 is measured, and the presence or absence of power generation abnormality in the fuel cell stack 100 is determined based on the measured open circuit voltage OCV. Therefore, it is possible to accurately determine the power generation abnormality in the fuel cell stack 100 when the fuel cell system is started.
- the open circuit voltage OCV of the fuel cell stack 100 is measured, so there is an abnormality in the reaction gas supply system.
- the open circuit voltage OCV of the battery stack 1 0 0 does not rise to the predetermined voltage OCV th or because there is an abnormality in the fuel cell stack 1 0 0 itself, the open circuit voltage OCV of the fuel cell stack 1 0 0 is predetermined.
- the power generation abnormality in the fuel cell stack 100 can be accurately determined by separating whether the voltage OCV th does not increase.
- so-called fail-safe mode control in this embodiment, supply of reactive gas is stopped
- the startup control process of the second embodiment after it is determined that the supply of the reaction gas to the fuel cell stack 100 is completed, a predetermined time If the open circuit voltage 0 CV of the fuel cell stack 100 0 does not reach the predetermined voltage 0 CV th within 10 minutes, it is determined that the fuel cell stack 1 0 0 has a power generation abnormality. Incorrect determination of power generation abnormality in battery stack ⁇ 0 0 can be suppressed.
- the completion of the supply of the reaction gas to the fuel cell stack 100 is determined based on the supply pressure of hydrogen and air, and the second embodiment described above. Then, in the start-up control process, the completion of the supply of the reaction gas to the fuel cell stack ⁇ 0 0 is determined based on the supply flow rates of hydrogen and air.
- the present invention is not limited to this, You may make it combine these suitably.
- step 1 2 0 of the startup control process when the pressure of hydrogen supplied to the fuel cell stack ⁇ 0 0 and the pressure of air respectively reach predetermined pressures in step 1 2 0 of the startup control process shown in FIG.
- the CPU of the control unit 90 resets the timer 96
- the present invention is not limited to this. That is, in step 1 2 0 of the startup control process, when the hydrogen pressure supplied to the fuel cell stack 100 and the air pressure respectively reach the predetermined pressure, the timer 96 is not reset.
- step S ⁇ 70 the elapsed time from the start of supply of the reaction gas to the fuel cell stack ⁇ 0 0 Based on the above, it may be determined whether to return to step S 1 5 0 or to proceed to step S 1 72.
- step 12 OA of the start control process the flow rate of hydrogen and the flow rate of air supplied to the fuel cell stack 100 in the step 12 OA of the start control process shown in FIG.
- the CPU of the control unit 90 A resets the timer 96, but the present invention is not limited to this. That is, in step 1 2 OA of the start control process, when the flow rate of hydrogen supplied to the fuel cell stack ⁇ 0 0 and the flow rate of air reach the predetermined pressure, the timer 96 is reset.
- the elapsed time from the start of the supply of the reaction gas to the fuel cell stack 100 is continuously measured, and in step S 1 70, when the supply of the reaction gas to the fuel cell stack 100 is started. It may be determined whether to return to step S 1 5 0 or to proceed to step S 1 72 based on the elapsed time from.
- the pressure sensor PS h and the flow rate sensor FS h are arranged in the hydrogen supply pipe 5 3 and the pressure sensor PS a is discharged in the discharge pipe 6 2
- the flow sensor FSa is disposed in the air supply pipe 61
- the location of each sensor can be arbitrarily set as long as it can detect hydrogen supplied to the fuel cell stack 100 and the pressure and flow rate of air.
- the voltmeter 80 measures the open circuit voltage of the entire fuel cell stack 100, but the present invention is not limited to this.
- the open circuit voltage may be measured for each fuel cell module 40. By so doing, power generation abnormality can be individually determined for the plurality of fuel cell modules 40.
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Abstract
Description
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112008002901T DE112008002901T5 (de) | 2007-10-30 | 2008-10-20 | Brennstoffzellensystem und Startsteuerverfahren für ein Brennstoffzellensystem |
US12/740,557 US20100261080A1 (en) | 2007-10-30 | 2008-10-20 | Fuel cell system and method of controlling startup of fuel cell system |
CN200880113634A CN101842926A (zh) | 2007-10-30 | 2008-10-20 | 燃料电池系统及燃料电池系统的起动控制方法 |
Applications Claiming Priority (2)
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JP2007281930A JP2009110806A (ja) | 2007-10-30 | 2007-10-30 | 燃料電池システム、および、燃料電池システムの起動制御方法 |
JP2007-281930 | 2007-10-30 |
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WO2009057534A1 true WO2009057534A1 (ja) | 2009-05-07 |
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US (1) | US20100261080A1 (ja) |
JP (1) | JP2009110806A (ja) |
CN (1) | CN101842926A (ja) |
DE (1) | DE112008002901T5 (ja) |
WO (1) | WO2009057534A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9088022B2 (en) | 2009-10-28 | 2015-07-21 | Murata Manufacturing Co., Ltd. | Fuel cell |
Families Citing this family (17)
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KR101509681B1 (ko) | 2009-12-02 | 2015-04-08 | 현대자동차 주식회사 | 연료전지 스택의 진단장치 및 방법 |
JP2011170983A (ja) * | 2010-02-16 | 2011-09-01 | Toto Ltd | 燃料電池システム |
JP4924910B2 (ja) * | 2010-02-26 | 2012-04-25 | Toto株式会社 | 燃料電池装置 |
JP5148681B2 (ja) * | 2010-12-20 | 2013-02-20 | アイシン精機株式会社 | 燃料電池システム |
EP2660911A1 (en) * | 2010-12-28 | 2013-11-06 | JX Nippon Oil & Energy Corporation | Fuel cell system |
JP5846542B2 (ja) * | 2011-09-21 | 2016-01-20 | トヨタ自動車株式会社 | 燃料電池システム |
JP6135643B2 (ja) * | 2014-11-12 | 2017-05-31 | トヨタ自動車株式会社 | 発電監視装置、燃料電池システムおよび発電監視方法 |
JP5986236B2 (ja) * | 2015-01-16 | 2016-09-06 | 大阪瓦斯株式会社 | 固体酸化物形燃料電池システム |
JP6376184B2 (ja) * | 2016-07-21 | 2018-08-22 | トヨタ自動車株式会社 | 燃料電池システムおよび車両 |
JP6412187B2 (ja) * | 2017-03-06 | 2018-10-24 | 東京瓦斯株式会社 | 燃料電池システム |
DE102018201103A1 (de) * | 2018-01-24 | 2019-07-25 | Audi Ag | Verfahren zur Bestimmung des Startzustandes eines Brennstoffzellensystems |
JP6448845B2 (ja) * | 2018-09-27 | 2019-01-09 | 東京瓦斯株式会社 | 燃料電池システム |
KR20210011525A (ko) * | 2019-07-22 | 2021-02-02 | 현대자동차주식회사 | 연료전지 차량의 비상 운전 제어 장치 및 방법 |
JP7207360B2 (ja) * | 2020-04-22 | 2023-01-18 | トヨタ自動車株式会社 | 燃料電池システム、及び、燃料電池スタックのリユース可否の判断方法 |
CN115020751B (zh) * | 2021-03-04 | 2024-07-30 | 丰田自动车株式会社 | 燃料电池系统 |
AT525895B1 (de) * | 2022-07-21 | 2023-09-15 | Avl List Gmbh | Steuerungsverfahren zum Hochfahren eines Brennstoffzellensystems |
WO2024127744A1 (ja) * | 2022-12-15 | 2024-06-20 | パナソニックIpマネジメント株式会社 | 分析方法、分析装置および発電システム |
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JP2005302539A (ja) | 2004-04-13 | 2005-10-27 | Honda Motor Co Ltd | 燃料電池システムおよび燃料電池システムの起動方法 |
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2007
- 2007-10-30 JP JP2007281930A patent/JP2009110806A/ja active Pending
-
2008
- 2008-10-20 DE DE112008002901T patent/DE112008002901T5/de not_active Withdrawn
- 2008-10-20 WO PCT/JP2008/069384 patent/WO2009057534A1/ja active Application Filing
- 2008-10-20 US US12/740,557 patent/US20100261080A1/en not_active Abandoned
- 2008-10-20 CN CN200880113634A patent/CN101842926A/zh active Pending
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JPH088111B2 (ja) * | 1987-12-10 | 1996-01-29 | 富士電機株式会社 | 燃料電池の自動起動制御方法 |
JP2002313390A (ja) * | 2001-04-12 | 2002-10-25 | Nissan Motor Co Ltd | 燃料電池システム |
JP2006278174A (ja) * | 2005-03-29 | 2006-10-12 | Ebara Corp | 非常用燃料電池発電装置及びその運転方法 |
JP2006278088A (ja) * | 2005-03-29 | 2006-10-12 | Toyota Motor Corp | 燃料電池システムおよび水素漏れ検出方法 |
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JP2007280925A (ja) * | 2006-03-15 | 2007-10-25 | Honda Motor Co Ltd | 燃料電池システムおよびその起動方法 |
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US9088022B2 (en) | 2009-10-28 | 2015-07-21 | Murata Manufacturing Co., Ltd. | Fuel cell |
Also Published As
Publication number | Publication date |
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US20100261080A1 (en) | 2010-10-14 |
DE112008002901T5 (de) | 2010-12-02 |
CN101842926A (zh) | 2010-09-22 |
JP2009110806A (ja) | 2009-05-21 |
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