WO2007020957A1 - 燃料ガス供給装置およびその制御方法 - Google Patents
燃料ガス供給装置およびその制御方法 Download PDFInfo
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- WO2007020957A1 WO2007020957A1 PCT/JP2006/316135 JP2006316135W WO2007020957A1 WO 2007020957 A1 WO2007020957 A1 WO 2007020957A1 JP 2006316135 W JP2006316135 W JP 2006316135W WO 2007020957 A1 WO2007020957 A1 WO 2007020957A1
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- WIPO (PCT)
- Prior art keywords
- reducing valve
- fuel gas
- pressure reducing
- pressure
- value
- Prior art date
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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
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
-
- 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
- H01M8/04313—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
- H01M8/04574—Current
- H01M8/04589—Current of fuel cell stacks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- 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
- H01M8/04791—Concentration; Density
- H01M8/04798—Concentration; Density 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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04197—Preventing means for fuel crossover
-
- 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 more particularly, to a technology of a fuel gas supply device that supplies fuel gas to a fuel cell.
- the fuel cell system includes a fuel cell stack, a fuel gas supply system that supplies fuel gas to the fuel cell stack, and an oxidizing gas supply system that supplies oxidizing gas to the fuel cell stack.
- the fuel gas supply system includes, for example, a tank that stores fuel gas at a high pressure, and a fuel gas passage that connects the tank and the fuel cell stack.
- the fuel gas supply system usually includes a first pressure reducing valve provided on the upstream side of the fuel gas passage and a second pressure reducing valve provided on the downstream side. Each pressure reducing valve has a function of adjusting the pressure on the downstream side to the target pressure.
- the second pressure reducing valve on the downstream side is closed first, and the first pressure reducing valve on the upstream side is closed later. That is, when the amount of fuel gas consumed in the fuel cell stack decreases rapidly, the pressure on the downstream side of the second pressure reducing valve increases, and as a result, the second pressure reducing valve closes. Further, when the second pressure reducing valve starts to close, the pressure on the downstream side of the first pressure reducing valve increases, and as a result, the first pressure reducing valve closes.
- the second pressure reducing valve is set to the closed state first and the first pressure reducing valve is set to the closed state later, the pressure between the two pressure reducing valves increases excessively. End up. For this reason, in the conventional technology, there is a risk that the two pressure reducing valves and the passage between the two pressure reducing valves may be damaged, and it is necessary to improve the pressure resistance of these parts. Disclosure of the invention.
- the present invention has been made to solve the above-described problems in the prior art, and prevents an excessive increase in pressure between two pressure reducing valves when the amount of fuel gas consumed in the fuel cell decreases.
- the purpose is to suppress.
- a first device of the present invention is a fuel gas supply device that supplies fuel gas to a fuel cell, the gas passing through the fuel gas supplied to the fuel cell A passage, a first pressure reducing valve provided in the gas passage, a second pressure reducing valve provided in the gas passage and disposed downstream of the first pressure reducing valve, and the second pressure reducing valve
- a setting unit that sets a target pressure value downstream of the pressure reducing valve to a value corresponding to the amount of fuel gas consumed by the fuel cell, and a quantity of fuel gas consumed by the fuel cell
- the value of the target pressure of the second i-pressure valve is larger than the value corresponding to the consumption after reduction of the fuel gas consumed by the fuel cell set by the setting unit.
- the target pressure value of the second pressure reducing valve is set to a value larger than the value corresponding to the reduced consumption.
- the pressure reducing valve is set to a significant opening degree.
- the changing unit is a target of the second pressure reducing valve.
- the value detected by the pressure sensor after the pressure value is changed to a value larger than the value corresponding to the consumption after reduction of the fuel gas consumed by the fuel cell set by the setting unit.
- the apparatus includes a pressure sensor for detecting a pressure between the first pressure reducing valve and the second pressure reducing valve, and the changing unit has a value of a target pressure of the second pressure reducing valve. Is changed to a value larger than the value corresponding to the consumption after reduction of the fuel gas consumed by the fuel cell set by the setting unit, the value detected by the pressure sensor is a second threshold value. In the case of the following, it is preferable to reduce the target pressure value of the second pressure reducing valve.
- the fuel gas between the two pressure reducing valves does not flow out to the downstream fuel cell via the second pressure reducing valve.
- the fuel gas can be used effectively.
- the value is preferably set so that a significant amount of fuel gas equal to or less than the amount of fuel gas leaking from the anode side to the cathode side through the electrolyte membrane of the fuel cell flows into the fuel cell.
- a second device of the present invention is a fuel gas supply device for supplying a fuel gas to a fuel cell, a gas passage through which a fuel gas supplied to the fuel cell passes, and a second gas passage provided in the gas passage.
- a second pressure reducing valve provided in the gas passage and disposed on the downstream side of the first pressure reducing valve, and the second pressure reducing valve is most throttled,
- the flow passage may be provided inside the second pressure reducing valve. .
- the second pressure reducing valve includes a needle valve having a substantially tapered tip portion, and a sleeve portion corresponding to the tip portion of the needle valve, and the flow passage is
- the concave portion or the convex portion provided in at least one of the tip portion and the sheet flange portion may be formed between the tip portion and the sheet flange portion.
- the flow passage may be provided outside the second pressure reducing valve and include a connection passage that connects an upstream side and a downstream side of the second pressure reducing valve. .
- the flow path has a significant amount less than or equal to a leakage amount of fuel gas permeating from the cathode side to the cathode side through the electrolyte membrane of the fuel cell in a state where the second pressure reducing valve is most narrowed. It is preferable that an amount of fuel gas is provided so as to flow into the fuel cell.
- a third device of the present invention is a fuel gas supply device that supplies fuel gas to a fuel cell, a gas passage through which the fuel gas supplied to the fuel cell passes, and a first gas passage provided in the gas passage. And a second pressure reducing valve disposed on the downstream side of the first pressure reducing valve, wherein the second pressure reducing valve is consumed by the fuel cell.
- the first pressure reducing valve is set to the closed state after the first pressure reducing valve is set to the closed state.
- the pressure between the two pressure reducing valves is excessive. The rise can be suppressed.
- the first apparatus of the present invention can also be realized in a method aspect.
- the method of the present invention is a control method in a fuel gas supply device that supplies fuel gas to a fuel cell, wherein the fuel gas supply device includes a gas passage through which the fuel gas supplied to the fuel cell passes, A first pressure reducing valve provided in the gas passage; and a second pressure reducing valve provided in the gas passage and disposed on the downstream side of the first pressure reducing valve. a) setting a target pressure value downstream of the second pressure reducing valve to a value corresponding to a consumption amount of the fuel gas consumed in the fuel cell; and (b) the consumption amount is a predetermined amount or more.
- the present invention can be realized in various forms, for example, a fuel gas supply device, a fuel cell system including the fuel gas supply device and a fuel cell, and a moving body equipped with the fuel cell system. And a control method in these devices, a computer program for realizing the functions of these methods or devices, a recording medium storing the computer program, and a data signal embodied in a carrier wave including the computer program It can be realized in various modes such as. Brief Description of Drawings
- FIG. 5 is an explanatory diagram showing a schematic configuration of the fuel cell system in the first embodiment.
- FIG. 2 is an explanatory view showing the operation of the fuel gas supply system in the comparative example.
- FIG. 3 is a flow chart showing the control procedure of the second pressure reducing valve 2 18 in the first embodiment.
- FIG. 4 is an explanatory diagram showing the operation of the fuel gas supply system in the first embodiment.
- FIG. 5 is a flowchart showing the control procedure of the second pressure valve 2 18 in the modification of the first embodiment.
- FIG. 6 is an explanatory view showing the operation of the fuel supply system in a modification of the first embodiment.
- FIG. 7 is an explanatory diagram showing a schematic configuration of the fuel cell system according to the second embodiment.
- FIG. 8 is an explanatory view schematically showing the internal structure of the second pressure reducing valve 2 1 8 B in the second embodiment.
- FIG. 9 is an explanatory view showing the operation of the fuel gas supply system in the second embodiment.
- FIG. 10 is an explanatory view showing a second pressure reducing valve 2 1 8 B 1 in a first modification of the second embodiment. ''
- FIG. 1U is an explanatory view showing a second pressure reducing valve 2 1 8 B 2 in a second modification of the second embodiment. '
- FIG. 12 is an explanatory view showing a second pressure reducing valve 2 1 8 B 3 in a third modification of the second embodiment.
- FIG. 13 is an explanatory view showing a fuel gas supply system 200 B 4 in a fourth modification of the second embodiment.
- FIG. 14 is an explanatory view schematically showing the internal structure of the second pressure reducing valve 2 18 C in the third embodiment.
- FIG. 15 is an explanatory diagram showing the operation of the fuel gas supply system in the third embodiment.
- FIG. 1 is an explanatory diagram showing a schematic configuration of the fuel cell system in the first embodiment.
- This fuel cell system is mounted on a vehicle.
- the fuel cell system includes a fuel cell stack 100, a fuel gas supply system 200, and an oxidation gas supply system 300.
- the fuel cell stack 100 uses a fuel gas (hydrogen gas) supplied from a fuel gas supply system 200 and an oxidizing gas (air) supplied from an oxidizing gas supply 3 ⁇ 4 300. , Generate electricity. Then, electric power is supplied to the load R connected to the fuel cell stack 100.
- a fuel gas hydrogen gas
- an oxidizing gas air supplied from an oxidizing gas supply 3 ⁇ 4 300.
- electric power is supplied to the load R connected to the fuel cell stack 100.
- An ammeter ⁇ 0 2 for measuring the current flowing through R is provided.
- Fuel gas supply system 2 0 0 is a tank that stores fuel gas (hydrogen gas) at high pressure 2 1
- the fuel gas is supplied to the fuel cell stack 10 0 0 through the fuel gas passage 1 2 1.
- the tank 2 1 0 is provided with a first shut-off valve 2 1 2.
- first shut-off valve 2 1 2 When the first shut-off valve 2 1 2 is set to an open state, fuel gas is sent into the fuel gas passage 1 2 1. Is done.
- the fuel gas passage 1 2 1 includes a first pressure reducing valve 2 1 4 and a second pressure reducing valve 2
- Each of the first and second pressure reducing valves 2 14, 2 18 is a valve having a diaphragm and whose opening degree is mechanically adjusted according to the pressure on the downstream side thereof.
- the first pressure reducing valve 2 14 reduces the pressure so that the pressure in the fuel gas passage 1 2 1 on the downstream side becomes equal to the relatively high first target pressure.
- Second pressure reducing valve 2 1 8 is depressurized so that the pressure in the downstream fuel gas passage 1 2 1 becomes equal to the relatively low second target pressure.
- the first target pressure of the first pressure reducing valve 2 1 4 is set to a constant value, but the second target pressure of the second pressure reducing valve 2 1 8 is adjusted. Is possible.
- the portion of the fuel gas passage 1 2 1 between the first shutoff valve 2 1 2 and the first pressure reducing valve 2 1 4 is referred to as the first partial passage 1 2 1 a
- the portion between the first pressure reducing valve 2 ⁇ 4 and the second pressure reducing valve 2 1 8 is called the second partial passage 1 2 1 b
- the second partial passage 1 2 1 6 includes a first pressure sensor that detects the pressure in the second partial passage 1 2 1 b (that is, the pressure on the downstream side of the first pressure reducing valve 2 1 4) P b 2 2 4 is installed.
- the third partial passage 1 2 1 c has a second pressure that detects the pressure in the third partial passage 1 2 1 c (that is, the pressure downstream of the second pressure reducing valve 2 c 8) P c.
- a pressure sensor 2 2 6 is provided. ⁇
- the oxidizing gas supply system 300 includes a blower 3 10 that sends out oxidizing gas (air), and the oxidizing gas is supplied to the fuel cell stack 100 via the oxidizing gas passage 13 1.
- the spent fuel off-gas discharged from the fuel cell stack 1 0 0 is provided with a second shutoff valve 2 6 0 in the P fuel off-gas passage 1 2 9 passing through the fuel off-gas passage 1 2 9 .
- the second shut-off valve 2 60 is intermittently set to an open state, whereby the fuel off gas is discharged from the fuel cell stack 100. Further, the used oxidizing off gas discharged from the fuel cell stack 100 passes through the oxidizing off gas passage 1 39.
- the fuel off-gas passage 1 2 9 and the oxidation off-gas passage ⁇ 3 9 merge at the downstream side, and the fuel off-gas and the oxidation off-gas are mixed in the joining passage 14 1 and released into the atmosphere.
- the fuel cell system further includes a control circuit that controls the operation of the entire system. It has.
- the control circuit 6 0 0 obtains the detection result of the ammeter 1 Q 2 and the detection results of the two pressure sensors 2 2 4 and 2 2 6.
- the control circuit 6 0 0 controls the opening and closing of the two shut-off valves 2 1 2 and 2 60 and the operation of the blower 3 1 0.
- the control circuit 600 of the present embodiment sets the target pressure of the second pressure reducing valve 2 18 according to the amount of fuel gas consumed in the fuel cell stack 200. Specifically, the control circuit 600 sets the target pressure of the second pressure reducing valve 2 1 8 according to the detection result of the ammeter 1 0 2. For example, when the output current detected by the ammeter 10 0 2 is relatively small, the consumption of the fuel gas inside the fuel cell stack 100 is relatively small, so that the control circuit 6 0 0 Set the target pressure of 2 pressure reducing valve 2 1 8 to a relatively small value. Note that the output current of the fuel cell stack 100 is relatively small, for example, when the vehicle is traveling at a relatively low speed.
- control circuit 600 controls the second pressure reducing valve 2 1 8 by adjusting the target pressure when the amount of fuel gas consumed in the fuel cell stack 100 is abruptly decreased. Suppresses excessive rise in pressure P b in partial passage 1 2 1 b.
- control circuit 60 0 increases the target pressure of the second pressure-reducing valve 2 18 when the output current detected by the ammeter 10 02 rapidly decreases. Note that the output current of the fuel cell stack 100 decreases rapidly, for example, when the vehicle decelerates rapidly.
- the control circuit 6 0 0 considers the detection result of the pressure P b in the second partial passage 1 2 1 b detected by the first pressure sensor 2 2 4, and the second pressure reducing valve 2 The target pressure of 1 8 can be further increased.
- control circuit 600 in this embodiment corresponds to the setting unit in the present invention and also corresponds to the changing unit.
- second pressure sensor 2 24 in this embodiment corresponds to the pressure sensor in the present invention.
- the second pressure sensor 2 26 is provided for convenience of explanation, but the second pressure sensor 2 26 can be omitted.
- the fuel gas supply system 200 ′ of the comparative example is substantially the same as the fuel gas supply system 200 of FIG. 1, but the second pressure reducing valve 2 18 ′ (not shown) is changed.
- the target pressure of the second pressure reducing valve 2 ⁇ 8 can be adjusted by the control circuit 600, but in the comparative example, the second pressure reducing valve 2 1 8 ′ (not shown) The target pressure is set to a constant value and cannot be adjusted by the control circuit 600.
- FIG. 2 is an explanatory view showing the operation of the fuel gas supply system in the comparative example.
- Figures 2 (a) to (e) show the output current of the fuel cell stack 100, the opening of the second pressure reducing valve 2 1 8 ', and the opening of the first pressure reducing valve 2 1 4.
- the pressure P c in the third partial passage 1 2 1 c detected by the second pressure sensor 226 and the second partial passage 1 2 1 b detected by the first pressure sensor 224 The pressure Pb of, and the change with time.
- An electrolyte tank (not shown) is provided inside the fuel cell stack 100.
- the fuel gas passes through the electrolyte membrane from the fuel gas side (an anode side) to the oxidizing gas side (the power sword side). Leak into For this reason, after the second pressure reducing valve 2 1 8 ′ is set to the closed state, the pressure P c in the third partial passage 1 2 1 c gradually decreases (FIG. 2 (d) )
- the first pressure reducing valve 24 is set in the closed state. For this reason, the pressure Pb in the second partial passage 1 2 1 b becomes excessive, and the passage wall of the second partial passage 1 2 1 b and the downstream side of the first pressure reducing valve 2 1 4 The mechanism on the upstream side of the second pressure reducing valve 2 1 8 'may be damaged.
- an excessive increase in the pressure Pb in the second partial passage 1 2 1 b is suppressed by controlling the target pressure of the second pressure reducing valve 2 1 8. .
- FIG. 3 is a flow chart showing the control procedure of the second pressure reducing valve '2 18 in the first embodiment. Note that the processing in FIG. 3 is executed, for example, when the vehicle decelerates rapidly. Note that the first shut-off valve 2 1 2 is maintained in the open state during the processing period of FIG. Further, in this embodiment, it is assumed that the second shut-off valve 2600 is set in the closed state during the execution period of the process of FIG.
- step S 1 0 2 the control circuit 6 0 0 obtains the detection value of the ammeter 1 0 2 and determines whether or not the output current of the fuel cell stack 1 0 0 has decreased by a predetermined amount or more within a predetermined period. Then, it is determined whether or not the consumption amount of the fuel gas consumed by the fuel cell stack 100 within a predetermined period has decreased by a predetermined amount or more.
- the output current of the fuel cell stack 100 is used to detect a sudden deceleration of the vehicle, in other words, a sudden decrease in fuel gas consumption. Yes.
- step S 1 0 2 the output current of the fuel cell stack 1 0 0 is reduced by a predetermined amount If it is determined that there is little, the process proceeds to step S 10.4. If it is determined that the value has not decreased, the process of FIG. 3 ends.
- step S 104 the control circuit 600 increases the target pressure P t of the second pressure reducing valve 218.
- the control circuit 60,0 sets the target pressure value t of the second pressure reducing valve 218 to Pt + ⁇ Pt1, and sets the set value to the second pressure reducing valve 218.
- the set value P t + ⁇ P t 1 is set to a value less than the predetermined value P c ⁇ ma X.
- the predetermined value P c ⁇ max is a value determined in consideration of a part having the lowest pressure resistance downstream of the second pressure reducing valve 218.
- the predetermined value P c-max is preset in consideration of this withstand voltage.
- step S 1 06 the control circuit 600 obtains the pressure P b in the second partial passage 1 2 1 b detected by the first pressure sensor 224, and the pressure P b is the first threshold value P b.
- the first threshold value P b Determine if it is greater than or equal to ma X.
- the process of step S106 is repeatedly executed.
- the pressure Pb is greater than or equal to the first threshold value Pb—max, the process proceeds to step S108.
- the first threshold P b-max is the passage wall of the second partial passage 1 21 b, the downstream side of the first pressure reducing valve 2 1 4, and the second pressure reducing valve 2 1 8 This value is determined considering the pressure resistance of the upstream mechanism.
- step S 1 08 the control circuit 600 determines whether or not the target pressure P t of the second pressure reducing valve 218 can be further increased. Specifically, the control circuit 600 determines whether or not the value P t + ⁇ P t 2 is less than a predetermined value P c ⁇ ma X. If it is determined that the target pressure P t can be further increased (ie P t + If ⁇ P t 2 ⁇ P c— max, proceed to step S 1 1 0 and if it is determined that the target pressure P t cannot be further increased (ie P t + ⁇ P t 2 ⁇ In the case of P c—max), the processing in FIG.
- step S 1 1 the control circuit 600 further increases the target pressure P t of the second pressure reducing valve 2 1 8. Specifically, the control circuit 600 sets the value of the target pressure P t to P t + ⁇ P t 2 and gives the set value to the second pressure reducing valve 218.
- step S 106 the process of step S 106 is executed again.
- the process of Fig. 3 is stopped when the vehicle accelerates, in other words, when the output current of the fuel cell stack increases.
- the target pressure increments ⁇ P t 1 and ⁇ P t 2 of the second pressure reducing valve 218 in steps S 104 and S 110 are predetermined.
- the increase amounts ⁇ P t1 and ⁇ Pt2 may be changed according to the decrease amount of the output current of the fuel cell stack 100. For example, if the decrease amount (absolute value) of the output current is relatively large, the increase amounts ⁇ P t 1 and P t 2 may be set relatively large. Also, the value of increase ⁇ t 2 is usually smaller than the value of increase ⁇ t 1.
- FIG. 4 is an explanatory diagram showing the operation of the fuel gas supply system in the first embodiment.
- Figure 4 shows the operation when the process of Figure 3 is executed.
- 4 (a) to (f) show the output current of the fuel cell stack 100, the target pressure Pt of the second pressure reducing valve 2 ⁇ 8, the opening of the second pressure reducing valve 218, respectively.
- the opening of the first pressure reducing valve 2 ⁇ 4 the pressure P c in the third partial passage 1 21 c, and the pressure P b in the second partial passage 1 2 1 b It shows a change.
- Figures 4 (a) and (c) to (f) correspond to Figures 2 (a) to (e), respectively, and Figure 4 (b) is added.
- Figures 4 (a) and (d) are the same as Figures 2 (a) and (c).
- Figs. 4 (c), (e), and (f) the same curves as in Figs. 2 (b), (d), and (e) are shown by broken lines. , ...
- the control circuit 600 performs the second decrease in step S 104 of FIG. This is because the target pressure P t of the pressure valve 2 1 8 is increased by ⁇ ⁇ tl ((FIG. 4 (b))).
- the second pressure reducing valve 2 18 is not set to the closed state, but is set to the slightly opened state. For this reason, the fuel gas in the second partial passage 1 2 1 b flows into the third partial passage 1 2 1 c.
- the change in the pressure P c in the third partial passage 1 2 1 c is smaller than that in the comparative example, and the pressure P c is maintained at a substantially constant value (Fig. 4 (e )). Also, the rise in pressure P b in the second part ffi passage 1 2 1 b is suppressed more than in the comparative example (Fig. 4 (f)) 6
- the pressure P c in the third partial passage 1 2 1 c is a substantially constant value. It is. This is because the amount of fuel gas flowing into the fuel cell stack 100 per unit time (inflow amount) and the fuel gas side (anode side) to the oxidizing gas side through the electrolyte membrane inside the fuel cell stack 100 This is because the amount of fuel gas leaked per unit time (leakage amount) on the (power sword side) is almost equal.
- the above inflow is preferably a significant amount less than the leakage. This will increase the amount of fuel gas inside the fuel cell stack 100.
- the inflow is preferably as large as possible below the leakage. By so doing, it is possible to sufficiently suppress the increase in the pressure Pb in the second partial passage 1 2 1 b.
- the value of the target pressure P t of the second pressure reducing valve 2 18 is less than the value corresponding to the consumption after the reduction. Li is also set to a large value.
- the second pressure reducing valve 2 1 8 is not set to the closed state, but is set to a significant opening degree. For this reason, the fuel gas in the second part channel 1 2 1 b flows out to the lower fuel cell stack 10 0 0. As a result, the pressure P b in the second part passage 1 2 1 b is excessively increased. Can be suppressed.
- the second pressure reduction The target pressure P t of the valve 2 1 8 can be further increased, and the opening degree of the second pressure reducing valve 2 1 8 can be set larger. For this reason, it is possible to reliably suppress an excessive increase in the pressure Pb in the second partial passage 1 2 1 b.
- FIG. 5 is a flowchart showing a control procedure of the second pressure reducing valve 2 18 in a modification of the first embodiment.
- Figure 5 is almost the same as Figure 3, except that steps S 1 1 2 and S 1 1 4 are added. Along with this, steps S 1 0.6 a and S 1 0 8 a have been changed.
- step S 1 1 Proceed to 2.
- step S 1 1 2 the control circuit 6 0 0 determines that the pressure? Acquired in step S 1 0 6 is the second threshold value. & m I Determine whether or not n or less.
- the second threshold P b—min is smaller than the first threshold value P b—max. If the pressure Pb is less than or equal to the second threshold value Pb—min, the process proceeds to step S 1 1 4. On the other hand, if the pressure Pb is greater than the second threshold value Pb—min, the process returns to step S106.
- step SI 14 the control circuit 600 reduces the target pressure P t of the second pressure reducing valve 218. At this time, the opening of the second pressure reducing valve 218 is reduced.
- the target pressure P t of the second pressure reducing valve 2 1 8 is reduced to a value corresponding to the output current of the fuel cell stack 100.
- the target pressure Pt of the second pressure reducing valve 2 ⁇ 8 may be set to decrease by a predetermined value ⁇ ⁇ ⁇ 3. In general, if the target pressure P t of the second pressure reducing valve 2 ⁇ 8 is reduced when the pressure P b in the second partial passage 121 b is equal to or lower than the second threshold value P b—min. Good.
- step S 1 08 a when it is determined in step S 1 08 a that the target pressure P t of the second pressure reducing valve 218 cannot be further increased (that is, P t + ⁇ P t 2 ⁇ P c_m ax In the case of), return to step S1 06a.
- FIG. 6 is an explanatory view showing the operation of the fuel gas supply system in a modification of the first embodiment.
- FIG. 6 shows an operation when the process of FIG. 5 is executed.
- Figures 6 (a) to (f) correspond to Figures 4 (a) to (f), respectively.
- Figures 6 (a) and (d) are the same as Figures 2 (a) and (c).
- Figs. 6 (c), (e), and (f) the same curves as in Figs. 2 (b), (d), and (e) are shown by broken lines.
- the operation up to time ta in the figure is the same as in the first example.
- the control circuit 600 performs the target pressure P t of the second pressure reducing valve 21 8 in step S 1 ⁇ 2 in FIG. Is reduced to a value corresponding to the output current of the fuel cell stack 100 (Fig. 6 (b)).
- the opening of the second pressure reducing valve 218 is also It is gradually set smaller, and finally the second pressure 2 1 8 is set to the closed state (Fig. 6 (c)).
- the second pressure reducing valve 2 1 8 when the second pressure reducing valve 2 1 8 is set to the closed state, the fuel gas in the second partial passage 1 2 1 b does not flow out. For this reason, the pressure P b in the second partial passage 1 2 1 b is maintained at a substantially constant value.
- the second pressure reducing valve 2 18 is finally set to a closed state, but may be set to a slight opening instead.
- FIG. 7 is an explanatory diagram showing a schematic configuration of the fuel cell system according to the second embodiment.
- FIG. 7 is almost the same as FIG. 1, but the ammeter ⁇ 0 2 is omitted.
- the second pressure reducing valve 2 1 8 ⁇ of the fuel gas supply system 2 0 0 ⁇ has been changed. Specifically, the target pressure of the second pressure reducing valve 2 1 8 ⁇ is set to a constant value and cannot be adjusted by the control circuit 6 0 0.
- FIG. 8 is an explanatory view schematically showing the internal structure of the second pressure reducing valve 2 1 ′ 8 B in the second embodiment.
- Figure 8 (A) shows the second pressure reducing valve 2 1 8 B when set to the open state
- FIG. 8 (B) shows the second pressure reducing valve 2 1 8 B when it is set to the closed state.
- the second pressure reducing valve 2 1 8 B includes an upper housing 4 1 0, a lower housing 4 2 0, a diaphragm 4 3 0, a needle valve 4 4 0, and a seat portion 4 5 0 as shown in the figure. And an upper spring 4 6 1 and a lower spring 4 6 2.
- Diaphragm 4 3 0 is sandwiched between upper housing 4 1 0 and lower housing 4 2 0.
- One end of the upper spring 4 6 ⁇ is fixed to the upper surface of the diaphragm 4 30, and the other end of the upper spring 4 61 is fixed to the inner side surface of the upper housing 4 10.
- one end of a substantially cylindrical cylindrical member 4 3 2 is fixed and wound on the lower surface of the diaphragm 4 3.
- the other end of the cylindrical member 4 3 2 is provided in contact with the needle valve 4 40, but is not fixed to the needle valve 4 40. Note that the pressure in the space Sa surrounded by the upper housing 4 10 and the diaphragm 4 3 0 is equal to the atmospheric pressure.
- the lower housing 4 2 0 is provided with an inlet 4 2 1 through which fuel gas flows and an outlet 4 2 2 through which fuel gas flows out.
- An internal passage through which fuel gas passes is formed between the inlet 4 2 1 and the outlet 4 2 2.
- One end of the lower spring 4 6 2 is fixed to the needle valve 4 40, and the other end of the lower spring 4 6 2 is fixed to the inner surface of the lower housing 4 2 0.
- an annular sea flange 4 5 0 is fixed to the lower octave 4 2 0, and a substantially tapered tip of the double valve 4 4 0 is secured to the annular sea flange 4 5 0. The parts touch.
- the upper spring 4 61 presses the diaphragm 4 3 0 downward in the figure.
- the pressure in the space S f below the diaphragm 4 3 0 is usually higher than the pressure (atmospheric pressure) in the space Sa, and presses the diaphragm 4 3 0 upward in the figure.
- the pressure in the space S f is equal to the pressure on the downstream side of the second pressure reducing valve 2 1 8 B.
- the lower spring 4 62 presses the needle valve 4 40 upward in the figure, and the needle valve 4 40 presses the diaphragm 4 3 0 upward in the figure via the cylindrical member 4 3 2.
- Second pressure reducing valve 2 1 8 The target pressure downstream of B is mainly determined by the pressing force of the upper spring 461.
- one linear groove 442 is formed at the substantially tapered tip of the needle valve 440.
- the groove 442 is formed so as to follow the frustum-shaped bus bar of the tip. Therefore, in this embodiment, as shown in FIG. 8 (B), even when the tip end portion of the needle valve 440 and the seat flange portion 450 are in contact with each other, a slight flow of the fuel gas is allowed.
- one groove 442 is provided at the tip of the needle valve 440, but a plurality of grooves may be provided instead.
- FIG. 9 is an explanatory view showing the operation of the fuel 4 gas supply system in the second embodiment.
- Figures 9 (a) to (e) correspond to Figures 2 (a) to (e,), respectively.
- Figures 9 (a) and (c) are the same as Figures 2 (a) and (c).
- Figs. 9 (b), (d), and (e) the same curves as in Figs. 2 (b), (d), and (e) are shown by broken lines.
- the second pressure reducing valve 2 1 8 B is in the fuel gas via the groove 4 4 2 provided at the tip of the needle valve 4 40 even in the closed state. Is slightly distributable. That is, in the present embodiment, it can be said that the second pressure reducing valve 2 ⁇ 8 B has a substantially significant opening even when it is structurally set to the most throttled state. For this reason, in FIG. 9 (b), the second pressure reducing valve 2 18 B is drawn so as to have a significant opening degree in the most throttled state.
- the second pressure valve 2 1 8 B allows fuel gas to flow even in the most throttled state. Therefore, the fuel gas in the second partial passage 1 2 1 b flows into the third partial passage 2 1 c. As a result, in the second embodiment, the third partial passage 1 2
- the change in pressure pc in ⁇ c is smaller than in the comparative example, and the pressure pc decreases more slowly than in the comparative example (Fig. 9 (d.)).
- the increase in the pressure P b in the second partial passage 1 2 1 b is suppressed as compared with the comparative example (FIG. 9 (e)).
- the pressure P c in the third partial passage 1 2 1 c gradually decreases. This is because the amount of fuel gas flowing into the fuel cell stack 100 per unit time (inflow amount) passes from the fuel gas side to the oxidizing gas side via the electrolyte membrane inside the fuel cell stack 100. This is because it is smaller than the amount of fuel gas leaking around.
- the second pressure reducing valve 2 ⁇ 8 B has a structural gap between the needle valve 4 40 of the second pressure reducing valve 2 1 8 B and the seat portion 4 5.
- a groove 44 2 (flow passage) that allows the fuel gas to flow therethrough is provided.
- the groove 44 2 is provided so that the inflow amount is smaller than the leakage amount when the second pressure reducing valve 2 18 B is most narrowed.
- the inflow is preferably a significant amount less than the leakage. In this way, the amount of fuel gas inside the fuel cell stack 100 does not increase, so that the fuel cell stack can be prevented from being damaged due to high pressure inside the fuel cell stack.
- the inflow is preferably as large as possible below the leakage. By so doing, it is possible to sufficiently suppress an increase in the pressure Pb in the second partial passage 1 2 1 b.
- FIG. 10 is an explanatory view showing the second pressure reducing valve 2 1 8 ⁇ ⁇ ⁇ ⁇ 1 in the second modified example of the second embodiment.
- the needle valve 4 4 0 ⁇ 1 is modified.
- three hemispherical convex portions 44 4 4 are formed at the tip of the needle valve 44 0.
- the convex portion 44 4 may be fixed to the needle valve 44 0 1 by welding, for example. 3 ⁇ 4
- the second pressure valve 2 1 8 ⁇ 1 allows the fuel gas to flow through the flow passage formed by the convex portions 44 4 4 in the most narrowed state. Can do.
- FIG. ⁇ 1 is an explanatory view showing a second pressure reducing valve 2 1.8 ⁇ ⁇ ⁇ ⁇ 2 in a second modification of the second embodiment.
- the needle valve 4 4 0 ⁇ 2 and the first flange portion 4 5 0 ⁇ 2 are changed.
- the needle valve 4 4 0 ⁇ 2 is not provided with a groove, and has a linear shape on the inner surface of the seat portion 4 5 0 ⁇ 2 (that is, the surface in contact with the two-dollar valve 4 4 0).
- One groove 4 5 2 is provided. Note that a plurality of grooves may be provided in the sheet portion 4 5 0 ⁇ 2.
- the second pressure reducing valve 2 1 8 ⁇ 2 is In this state, the fuel gas can be circulated through the groove 45 2 (flow passage).
- the flow passage that allows the fuel gas to flow in the state where the second pressure reducing valve is most throttled is at least between the tip of the needle valve and the seam portion. It can be formed between the tip of the needle valve and the seat flange by a recess (Fig. 8, Fig. 11) or projection (Fig. 10) provided on the side.
- FIG. 12 is an explanatory view showing a second pressure reducing valve 2 1 8 B 3 in a modification of ⁇ 3 of the second embodiment.
- the needle valve 44 0 B 3 and the seat portion 4 5 0 B 3 are changed.
- Needle valve 4 4 0 B 3 is the same as needle valve 4 4 0 B 2 in FIG. Also, the side surface of the annular sea collar 4 5 0 B 3 and
- a plurality of convex portions 4 5 4 are formed on the bottom surface (that is, two surfaces in contact with the lower housing 4 2 0).
- the second pressure reducing valve 2 1 8 B 3 is in the most narrowed state via the flow passage formed by the plurality of convex portions 4 5 4 and fuel gas. Can be distributed.
- the flow passage that allows the fuel gas to flow in the state where the second pressure reducing valve is most narrowed is provided inside the second pressure reducing valve. Instead of this, it may be provided outside the second pressure reducing valve.
- FIG. 13 is an explanatory view showing a fuel gas supply system 200 B 4 in a fourth modification of the second embodiment.
- This fuel gas supply system 2 0 0 B 4 is substantially the same as the fuel gas supply system 2 0 0 in FIG. 7, except that the second pressure reducing valve 2 1 8 B 4 is changed and the bypass passage 1 2 5 has been added.
- the second pressure reducing valve 2 1 8 B 4 is substantially the same as the second pressure reducing valve 2 1 8 B in FIG. ,
- a bypass passage 1 2 5 is provided outside the second pressure reducing valve 2 1 8 ⁇ 4.
- the bypass passage 1 2 5 includes a second partial passage ⁇ 2 1 b upstream of the second pressure reducing valve 2 1 8 ⁇ 4 and a third portion downstream of the second pressure reducing valve 2 1 8 B 4. Passage ⁇ 2 1 c and are connected.
- the second pressure reducing valve 2 1 8 ⁇ 4 is in the most narrowed state (ie, the closed state), and the bypass passage 1 2 5 (flow passage) is the fuel Gas can be passed.
- bypass passage 1 25 is provided, but in addition to this, a shut-off valve may be provided in the bypass passage 1 25. In this case, it is possible to control whether or not the fuel gas flows in the bypass passage 1 2 5 .In this case, for example, only when the output current of the fuel cell stack decreases by a predetermined amount or more, the shut-off valve is It can be opened.
- the fuel cell system of the third embodiment is almost the same as the fuel cell system of the second embodiment (FIG. 7), but the second pressure reducing valve is changed.
- FIG. 14 is an explanatory view schematically showing the internal structure of the second decompression rod 2 18 C in the third embodiment.
- Fig. 14 (A) shows the second pressure reducing valve 2 18 C when set to the open state
- Fig. 14 (B) shows the second pressure reducing valve when set to the closed state.
- Valve 2 1 8 C is shown.
- the second pressure reducing valve 2 18 C of this embodiment is substantially the same as the pressure reducing valve 2 18 B shown in FIG. 8, but the needle valve 4 40 C is not provided with a groove. Also, the lower spring 4 6 2 C of the second pressure reducing valve 2 1 8 C has a smaller panel constant than the comparative example. The spring is adopted.
- FIG. 15 is an explanatory diagram showing the operation of the fuel gas supply system in the third embodiment.
- Figures 15 (a) to (e) correspond to Figures 2 (a) to (e), respectively.
- Figures 15 (a) and (c) are the same as Figures 2 (a) and (c).
- Fig. 15 (b) '(d) and (e) the same curve as in Fig. 2 (b), (d) and (e) is shown by broken lines.
- the second pressure reducing valve 2 18 C closes more slowly than the comparative example (Fig. 15 (b)). Specifically, the second pressure reducing valve 2 18 C is set to the closed state after the first pressure reducing valve 2 14 is set to the closed state. For this reason, in the present embodiment, the pressure P c in the third partial passage 1 2 1 c increases more rapidly than in the comparative example (FIG. 15 (d)). In addition, the pressure P b in the second partial passage 1 2 1 b rises more slowly than the comparative example (FIG. 15 (e)).
- the second pressure reducing valves 2 1 8 C are set to the closed state. Therefore, before the second pressure reducing valve 2 1 8 C is set to the closed state, the fuel gas in the second partial passage 1 2 1 b flows out to the fuel cell stack 100 on the downstream side, and this As a result, an excessive increase in the pressure Pb in the second partial passage 1 2 1 b can be suppressed.
- the panel constant of the lower spring 462 of the second pressure reducing valve 21, 8 C is' after the first pressure reducing valve 2 1.4 is set to the closed state.
- the response speed of the second pressure reducing valve 2 18 C is adjusted by changing the panel constant of the lower spring 462.
- the response speed of the second pressure reducing valve is such that the needle valve moves along its central axis. It may be adjusted by changing an annular guide member (not shown) for the purpose. Specifically, the friction force received when the two-dollar valve moves may be increased by interposing a ring between the needle valve and the guide member.
- an excessive increase in the pressure P b in the second partial passage 1 2 1 b is suppressed, but in addition, Similar to the third embodiment, the response speed of the first pressure reducing valve may be adjusted.
- an excessive pressure Pb in the second partial passage 1 2 1 b can be obtained by providing a flow passage that allows the fuel gas to flow with the second pressure reducing valve being most throttled.
- the response speed of the second pressure reducing valve may be adjusted as in the third embodiment.
- the present invention can be used in a fuel gas supply device that supplies fuel gas to a fuel cell.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/993,481 US9742015B2 (en) | 2005-08-12 | 2006-08-10 | Fuel gas feeding device and control method therefor |
CN2006800291621A CN101238607B (zh) | 2005-08-12 | 2006-08-10 | 燃料气体供给装置及其控制方法 |
DE112006002018.8T DE112006002018B4 (de) | 2005-08-12 | 2006-08-10 | Brenngasversorgungsvorrichtung und Verfahren zu ihrer Steuerung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-234186 | 2005-08-12 | ||
JP2005234186A JP4992209B2 (ja) | 2005-08-12 | 2005-08-12 | 燃料ガス供給装置 |
Publications (1)
Publication Number | Publication Date |
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WO2007020957A1 true WO2007020957A1 (ja) | 2007-02-22 |
Family
ID=37757614
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2006/316135 WO2007020957A1 (ja) | 2005-08-12 | 2006-08-10 | 燃料ガス供給装置およびその制御方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9742015B2 (ja) |
JP (1) | JP4992209B2 (ja) |
CN (2) | CN101238607B (ja) |
DE (1) | DE112006002018B4 (ja) |
WO (1) | WO2007020957A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110269045A1 (en) * | 2009-01-19 | 2011-11-03 | Toyota Jidosha Kabushiki Kaisha | High-pressure fluid supply apparatus |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2493778B (en) | 2011-08-19 | 2014-06-18 | Framo Eng As | Fluid pressure control system |
JP2013254624A (ja) * | 2012-06-06 | 2013-12-19 | Suzuki Motor Corp | 車両用燃料電池システム |
FR3080431B1 (fr) * | 2018-04-24 | 2020-05-08 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Dispositif fluidique d’alimentation en fluide d’interet |
JP7420650B2 (ja) * | 2020-06-04 | 2024-01-23 | 本田技研工業株式会社 | ガス供給システム |
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JP2005108648A (ja) * | 2003-09-30 | 2005-04-21 | Isuzu Motors Ltd | 燃料電池 |
JP2005123076A (ja) * | 2003-10-17 | 2005-05-12 | Honda Motor Co Ltd | 遮断弁の開閉状態判定システム及び遮断弁の開閉状態判定方法 |
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JP2005216519A (ja) * | 2004-01-27 | 2005-08-11 | Toyota Motor Corp | 燃料電池システム |
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US4974565A (en) * | 1988-02-26 | 1990-12-04 | Toyota Jidosha Kabushiki Kaisha | Fuel swirl generation type fuel injection valve and direct fuel injection type spark ignition internal combustion engine mounted with the fuel injection valve |
JPH11154528A (ja) | 1997-11-19 | 1999-06-08 | Sanyo Electric Co Ltd | 燃料電池 |
US6938840B1 (en) * | 1998-08-27 | 2005-09-06 | Robert Bosch Gmbh | Fuel injection valve |
JP4100533B2 (ja) * | 1999-05-06 | 2008-06-11 | 日産自動車株式会社 | 燃料電池車における排水素燃焼器の温度制御装置 |
JP4944300B2 (ja) * | 2001-01-25 | 2012-05-30 | 本田技研工業株式会社 | 燃料電池システム |
JP3879409B2 (ja) | 2001-02-01 | 2007-02-14 | 日産自動車株式会社 | 燃料電池システム |
KR100599901B1 (ko) * | 2002-05-14 | 2006-07-12 | 닛산 지도우샤 가부시키가이샤 | 연료 전지 시스템 및 관련 기동 방법 |
JP3864875B2 (ja) * | 2002-09-02 | 2007-01-10 | 日産自動車株式会社 | 供給開閉弁の故障診断システム |
JP2004127748A (ja) | 2002-10-03 | 2004-04-22 | Nissan Motor Co Ltd | 燃料電池システム |
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US7981559B2 (en) * | 2004-03-17 | 2011-07-19 | Toyota Jidosha Kabushiki Kaisha | Fuel cell system supply having a measuring device and a control device |
US7939215B2 (en) * | 2006-04-14 | 2011-05-10 | Fuel Energy, Inc. | Fuel cell system with fuel flow control assembly including a low flow bypass |
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2005
- 2005-08-12 JP JP2005234186A patent/JP4992209B2/ja not_active Expired - Fee Related
-
2006
- 2006-08-10 DE DE112006002018.8T patent/DE112006002018B4/de not_active Expired - Fee Related
- 2006-08-10 CN CN2006800291621A patent/CN101238607B/zh not_active Expired - Fee Related
- 2006-08-10 WO PCT/JP2006/316135 patent/WO2007020957A1/ja active Application Filing
- 2006-08-10 US US11/993,481 patent/US9742015B2/en not_active Expired - Fee Related
- 2006-08-10 CN CN2010101475442A patent/CN101814617B/zh not_active Expired - Fee Related
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JP2005108648A (ja) * | 2003-09-30 | 2005-04-21 | Isuzu Motors Ltd | 燃料電池 |
JP2005123076A (ja) * | 2003-10-17 | 2005-05-12 | Honda Motor Co Ltd | 遮断弁の開閉状態判定システム及び遮断弁の開閉状態判定方法 |
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US20110269045A1 (en) * | 2009-01-19 | 2011-11-03 | Toyota Jidosha Kabushiki Kaisha | High-pressure fluid supply apparatus |
US8642225B2 (en) * | 2009-01-19 | 2014-02-04 | Toyota Jidosha Kabushiki Kaisha | High-pressure fluid supply apparatus |
Also Published As
Publication number | Publication date |
---|---|
CN101814617B (zh) | 2011-11-23 |
US9742015B2 (en) | 2017-08-22 |
CN101238607A (zh) | 2008-08-06 |
US20090053567A1 (en) | 2009-02-26 |
CN101814617A (zh) | 2010-08-25 |
DE112006002018B4 (de) | 2019-05-29 |
CN101238607B (zh) | 2011-08-17 |
JP4992209B2 (ja) | 2012-08-08 |
DE112006002018T5 (de) | 2008-05-29 |
JP2007048693A (ja) | 2007-02-22 |
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