WO2008069331A1 - 燃料電池を搭載した移動体 - Google Patents
燃料電池を搭載した移動体 Download PDFInfo
- Publication number
- WO2008069331A1 WO2008069331A1 PCT/JP2007/073733 JP2007073733W WO2008069331A1 WO 2008069331 A1 WO2008069331 A1 WO 2008069331A1 JP 2007073733 W JP2007073733 W JP 2007073733W WO 2008069331 A1 WO2008069331 A1 WO 2008069331A1
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- WO
- WIPO (PCT)
- Prior art keywords
- pipe
- moving body
- fuel cell
- vehicle
- discharge port
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
- B60K13/04—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
-
- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
- B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
- B60K2001/0422—Arrangement under the front seats
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- 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 moving body equipped with a fuel cell, and more particularly to a technique for discharging discharged fluid discharged from a fuel cell to the outside of the moving body.
- exhaust gas discharged from the fuel cell, or generated water, that is, generated water generated by an electrochemical reaction between hydrogen and oxygen hereinafter referred to as the above exhaust gas
- the generated water can also be discharged directly onto the road surface (collectively referred to as “exhaust fluid”).
- exhaust fluid as a gas discharge structure of an in-vehicle fuel cell, for example, the one described in Japanese Patent Laid-Open No. 2 0 03-2 1 9 5 12 is known.
- the present invention has been made to solve the above-described problems, and in a mobile body equipped with a fuel cell, a discharge port for discharging the exhausted fluid discharged from the fuel cell to the outside of the mobile body is closed.
- the purpose is to provide a technology that enables traveling under conditions in which various obstructions that cause the problem are present around a moving object.
- the moving body of the present invention is a moving body equipped with a fuel cell, and includes a discharge pipe for flowing a discharged fluid discharged from the fuel cell, and the discharge pipe sends the discharged fluid to the outside of the moving body.
- the gist is provided with a plurality of outlets for discharging, and at least two of the plurality of outlets are arranged at different heights.
- the discharge pipe includes a plurality of discharge ports for discharging the discharge fluid discharged from the fuel cell to the outside of the moving body, and at least two of the plurality of discharge ports
- the multiple outlets are arranged at the same height to determine the probability that they will be simultaneously occluded by the various obstructions described above. Can be lower than it is. That is, for example, when the mobile body of the present invention is traveling on a submerged channel, the discharge port arranged at a relatively low position, such as the lower floor behind the main body of the mobile body, is blocked by water or earth and sand.
- the moving body of the present invention has a discharge port arranged at a relatively high position during normal traveling. 3 Even when blocked by fallen objects or flying objects as described above, the power generation by the fuel cell is continued, and the unoccluded outlet located at a relatively low position is used. The discharged fluid can be discharged to the outside of the moving body. Therefore, according to the present invention, it is possible to make it possible for a mobile body equipped with a fuel cell to travel in a situation where there are various obstructions that cause the exhaust port to be closed around the mobile body. .
- the discharge pipe can take various configurations.
- a first pipe having a first discharge port at a terminal end and a second discharge port at a terminal end
- the second discharge port may be arranged at a position higher in the vertical direction than the first discharge port.
- the exhaust fluid since the exhaust fluid may contain generated water in addition to the exhaust gas, it is preferable to discharge the exhaust fluid from the first discharge port arranged at a relatively low position.
- the discharge efficiency of the discharged fluid is higher than that of the above-mentioned discharged fluid from the discharge port of 2. Therefore, in the moving body, in order to discharge the fluid discharged from the fuel cell to the outside of the moving body, the first discharge port is mainly used, and the second discharge port is used as an auxiliary. It may be.
- the first pipe and the second pipe may be provided independently, but the second pipe is branched and connected from the first pipe. It may be.
- the first pipe has a high-order part formed so that the exhaust fluid flowing in the first pipe flows in a position higher than the first discharge port.
- the second pipe is connected by branching from the higher part in the first pipe, or from the upstream part in the flow direction of the exhaust fluid than the high part. You may be allowed to. By doing so, for example, when the mobile body of the present invention travels on a submerged channel, the water level on the road surface becomes higher than the height at which the first outlet is installed. However, until it reaches the height of the above-mentioned high portion, water, earth and sand, etc.
- the second piping and second The discharge fluid can be discharged using the discharge port.
- the inner diameter of the second pipe is made smaller than the inner diameter of the first pipe. OK. By doing so, it is possible to facilitate the handling of the second pipe in the moving body. In addition, the space required for installing the second pipe can be reduced. Therefore, an increase in the size of the moving body due to the provision of the second pipe can be suppressed.
- the discharged fluid is supplied to the connection portion between the first pipe and the second pipe.
- a switching section for switching between discharging from the discharge port or flowing through the second pipe and discharging from the second discharge port.
- the switching unit causes the discharge to occur.
- the fluid can flow from the first pipe to the second pipe and be discharged from the second outlet.
- the switching unit includes a pressure control mechanism for allowing the discharged fluid to flow into the second pipe when the pressure in the first pipe becomes a predetermined value or more. You may do it.
- the predetermined value related to the pressure in the first pipe is set to a value by which it can be determined that the first outlet is closed during power generation by the fuel cell. In this way, when the first discharge port is blocked, the discharged fluid can be automatically discharged from the second discharge port without controlling the switching unit by an external instruction. wear.
- Examples of the pressure control mechanism include a relief valve and an orifice.
- the detection unit that detects the presence of an obstruction that closes the first discharge port around the moving body, and the switching unit includes the discharge unit.
- a valve control unit that controls the operation of the switching valve according to the presence state.
- the operation of the switching valve is controlled according to the presence of the obstruction around the moving body, and the discharged fluid is discharged from the first outlet or flows through the second pipe, You can switch whether to discharge from the 2 outlets.
- the detection unit for example, a water level sensor, which will be described later, may be used, or the presence state of an obstruction on the road surface may be determined based on inundation information acquired through communication with an information center.
- the road surface condition during traveling may be captured by a camera, and the captured image may be analyzed by image processing or the like to determine the presence state of an obstruction on the road surface.
- the obstruction may be water existing on the road surface
- the detection unit may include a water level sensor that detects a water level of the water existing on the road surface.
- the moving body of the present invention controls the operation of the switching valve according to the water level existing on the road surface on which the moving body travels while traveling on the submerged channel, and discharges the first fluid. It is possible to switch between discharging from the discharge port or flowing through the second pipe and discharging from the second discharge port.
- the water level sensor for example, various sensors such as a float switch, an ultrasonic sensor, and a capacitance sensor can be applied.
- the moving body further includes an attenuation member for attenuating a undulation phenomenon on a water surface to be detected by the water level sensor.
- an attenuation member for attenuating a undulation phenomenon on a water surface to be detected by the water level sensor.
- the valve control unit is When the water level detected by the water level sensor is equal to or higher than a predetermined value, the operation of the switching valve may be controlled so that the discharged fluid flows through the second pipe.
- the predetermined value related to the water level is set to a value by which it is possible to determine whether or not water or earth / sand flows from the first outlet during the power generation by the fuel cell. In this way, even when the moving body of the present invention travels along a submerged channel, water, earth and sand, etc. may flow from the first outlet or may flow into the switching valve.
- the fuel cell may be arranged at a lower floor of the mobile object. In this way, when the moving body is, for example, a vehicle, the space under the floor of the vehicle can be effectively used. In addition, by disposing a fuel battery in the lower part of the floor of the vehicle, the center of gravity of the vehicle can be lowered and stability during driving can be improved.
- a vehicle equipped with a fuel cell is usually provided with a cooling device (a radiator) that cools the cooling water for cooling the fuel cell.
- This radiator is installed in front of the vehicle in order to cool the cooling water by using the traveling wind when the vehicle is traveling. Therefore, by arranging the fuel cell in the lower part of the floor of the vehicle, the space around the radiator can be widened compared to the case where the fuel cell is arranged in the vicinity of the radiator. As a result, the heat dissipation efficiency of the radiator can be improved, and the air cooling efficiency of the cooling water can be improved.
- the present invention can be configured as an invention of a method for controlling a moving body in addition to the above-described structure as a moving body.
- the present invention 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 a computer program or a recording medium on which the program is recorded.
- Recording media include flexible discs, CD-ROMs, DVD-ROMs, magneto-optical discs, IC cards, ROM cartridges, punch cards, printed products with codes such as barcodes, computer internal storage devices (RAM and Various types of computer-readable media such as a memory such as a ROM and an external storage device can be used.
- FIG. 1 is an explanatory diagram showing a schematic configuration of a fuel cell system 100 mounted on a vehicle 1000 as an embodiment of the present invention.
- FIG. 2 is an explanatory diagram showing a schematic configuration of the switching unit 54 of the first embodiment.
- FIG. 3 is an explanatory diagram showing a schematic configuration of the switching unit 54 A of the second embodiment.
- FIG. 4 is a flowchart showing the flow of valve control processing for the valve 54 V.
- FIG. 5 is an explanatory diagram showing a schematic configuration of the gas-liquid separator 25.
- FIG. 6 is an explanatory diagram showing a schematic configuration of the switching unit 54 B of the third embodiment.
- FIG. 7 is a flowchart showing the flow of valve control processing for the three-way valve 54 V a.
- FIG. 8 is an explanatory view showing the arrangement of a water level sensor 84 as a modified example.
- FIG. 9 is an explanatory view showing the arrangement of the pipe 60 and the pipe 62 as a modification.
- FIG. 10 is an explanatory diagram showing a flow of valve control in a modified example.
- FIG. 1 shows a fuel cell system 1 mounted on a vehicle 1 000 as an embodiment of the present invention.
- 10 is an explanatory diagram showing a schematic configuration of 00.
- the vehicle 100 is a so-called electric vehicle in which a motor is driven by electric power generated by the fuel cell system 100 and the axle and wheels are rotated by the power.
- the driver operates the accelerator provided in the vehicle 100
- power is generated according to the operation amount detected by the accelerator opening sensor 80.
- the vehicle 1 0 0 0 corresponds to a moving body in the present invention.
- the fuel cell (F C) stack 10 is a laminated body in which a plurality of cells that generate power by an electrochemical reaction between hydrogen and oxygen are laminated.
- Each cell has a structure in which a hydrogen electrode (hereinafter referred to as an anode) and an oxygen electrode (hereinafter referred to as a force sword) are arranged with an electrolyte membrane having proton conductivity interposed therebetween (not shown).
- the electrolyte membrane is a solid polymer type cell that uses a solid polymer membrane such as Nafion (registered trademark).
- the present invention is not limited to this, and various types can be used. .
- Hydrogen as fuel gas is supplied to the anode of the fuel cell stack 10 from a hydrogen tank 20 storing high-pressure hydrogen via a pipe 23.
- a hydrogen generator that generates hydrogen by a reforming reaction using alcohol, hydrocarbon, aldehyde, or the like as a raw material may be used.
- the high-pressure hydrogen stored in the hydrogen tank 20 is adjusted in pressure and supply amount by a shut valve 21, a regulator 22, etc. provided at the outlet of the hydrogen tank 20, so that the anode of the fuel cell stack 10 To be supplied.
- Exhaust gas from the anode (hereinafter referred to as anode off gas) is introduced into the gas-liquid separator 25 via the pipe 24.
- the gas-liquid separator 25 separates water contained in the anode off-gas from unconsumed hydrogen by power generation by the fuel cell stack 10. Hydrogen separated by the gas-liquid separator 25 can be recirculated to the pipe 23 via the circulation pipe 26.
- the pipe 2 8 is branched and connected, and the purge valve 29 is provided in this pipe 2 8. Has been. This purge valve 29 is closed 2007/073733
- the anode off-gas that is, hydrogen separated by the gas-liquid separator 25 is circulated again to the fuel cell stack 10 through the circulation pipe 26.
- hydrogen can be used effectively.
- the circulation pipe 26 is provided with the anode off-gas during recirculation of the anode off-gas.
- a circulation pump 27 for pressurizing off-gas is provided.
- Compressed air is supplied to the power sword of the fuel cell stack 10 as an oxidant gas containing oxygen. Air is sucked from the air cleaner 30, compressed by the air compressor 3 2, and supplied to the power sword of the fuel cell stack 10 from the pipe 3 4.
- a humidifier for humidifying the air supplied to the fuel cell stack 10 may be provided on the pipe 3 4 in order to maintain the electrolyte membrane of the fuel cell stack 10 in a wet state. Good.
- Exhaust gas from the power sword (hereinafter referred to as power sword off gas) flows out to the pipe 36.
- an air pressure regulating valve 35 is provided in the pipe 36, and the air pressure in the fuel cell stack 10 can be controlled by controlling the air pressure regulating valve 35.
- the anode off-gas that has flowed into the pipe 28 is introduced into the diluter 50.
- the diluter 50 dilutes the concentration of hydrogen contained in the anode off gas by mixing the anode off gas and the power sword off gas.
- Exhaust gas discharged from the diluter 50 is discharged to the outside of the vehicle 100 through the pipe 60 and the muffler 56 from the discharge port at the end of the pipe 60.
- a switching unit 54 is provided between the diluter 50 and the muffler 56. Then, in a situation where it is not suitable to exhaust the exhaust gas from the exhaust outlet at the end of the pipe 60 to the outside of the vehicle 100 0 or in a situation where it cannot be discharged, the switching part 5 4 It is also possible to discharge to the outside of the vehicle 100 from the discharge port at the end of the pipe 62 connected to the 60. Details of the switching unit 54 will be described later.
- cooling water is also supplied to the fuel cell stack 10.
- the cooling water flows through the cooling water pipe 4 2 by the circulation pump 41, is cooled by the radiator 40, and is supplied to the fuel cell stack 10.
- bypass pipe 4 3 for circulating cooling water is connected to pipe 4 2 without passing through radiator 40, and furthermore, between pipe 4 2 and bypass pipe 4 3
- One connection part is provided with a three-way valve 4 4. Therefore, by switching the three-way valve 4 4, it is possible to circulate the cooling water through the pipe 4 2 and the bypass pipe 4 3 without passing through the radiator 40.
- an ion exchanger 45 is connected to the pipe 42 via a pipe 46. The ion exchanger 45 removes various ions contained in the cooling water that cause an increase in the conductivity of the fuel cell stack 10.
- the operation of the fuel cell system 100 is controlled by the control unit 70.
- the control unit 70 is configured as a microcomputer having a CPU, a RAM, and a ROM therein, and controls the operation of the system such as various valves and pumps in accordance with a program stored in the ROM.
- the fuel cell stack 10 is housed in a stack case and is installed in the lower floor of the vehicle 100.
- a diluter 50, a gas-liquid separator 25, a switching unit 54, a muffler 56, and pipes connecting them are also installed in the lower floor of the vehicle 100.
- the hydrogen tank 20 is installed in the lower part of the rear seat of the vehicle 100. By doing so, the space under the floor of the vehicle 100 can be used effectively. Further, by arranging the fuel cell stack 10 or the like under the floor of the vehicle 100, the center of gravity of the vehicle 100 can be lowered and the stability during travel can be improved.
- the radiator 40, the circulation pump 41, the ion exchanger 45, the control unit 70, etc. are installed in the space in front of the vehicle 100. Therefore, the space around the radiator 40 can be widened as compared with the case where the fuel cell stack 10 or the like is disposed in the vicinity of the radiator 40. As a result, the heat dissipation efficiency of the radiator 40 can be improved and the cooling efficiency of the cooling water can be improved.
- FIG. 2 is an explanatory diagram showing a schematic configuration of the switching unit 54 of the first embodiment.
- the pipe 60 is provided with a U-shaped tube 60 u having a convex shape in the lead straight direction at a part thereof, and at the end portion thereof, the discharge port 6 0 ⁇ is provided.
- the discharge port 6 0 ⁇ is arranged in the lower floor behind the vehicle 1 0 0 0.
- the pipe 60 and the U-shaped pipe 60 u correspond to the first pipe in the present invention, and the U-shaped pipe 60 u corresponds to the high portion in the present invention. Further, the outlet 60 0 o corresponds to the first outlet in the present invention.
- a pipe 62 is branched and connected to the top of the U-shaped tube 60 u. This pipe 6 2 extends to the upper part of the trunk room along the inner surface of the vehicle body.
- outlet 6 2. Is located higher than the outlet 60 o.
- the pipe 6 2 corresponds to the second pipe in the present invention, and the discharge port 6 2 o corresponds to the second discharge port in the present invention.
- a relief valve 5 4 Vr is disposed in the pipe 6 2.
- This relief valve 5 4 V r is closed at normal times, that is, when the pressure in the U-shaped tube 60 u is relatively low, and the pressure in the U-shaped tube 60 0 u exceeds a predetermined value. When it becomes, the valve opens automatically.
- the predetermined value related to the pressure in the U-shaped tube 60 u is set to a value by which it can be determined that the discharge port 60 o is closed during power generation by the fuel cell stack 10.
- the relief valve 5 4 V r corresponds to the pressure control mechanism in the present invention.
- the inner diameter of the pipe 62 is set sufficiently smaller than the inner diameter of the pipe 60. Therefore, it is possible to facilitate the handling of the pipe 62 in the vehicle 100. In addition, the space required for installing the pipe 62 can be reduced. Therefore, it is possible to suppress the increase in size of the vehicle 100 and the reduction of the living space in the vehicle by providing the pipe 62.
- the level of water existing on the road surface RS is the height from the road surface RS to the upper part of the outlet 60 o when traveling on a flooded road.
- the pressure in the U-tube 60 u is relatively low, so the relief valve 5 4 V r is closed.
- the exhaust gas discharged from the fuel cell stack 10 is discharged to the outside of the vehicle 100 through the discharge port 60 o.
- Patent Document 2 describes a technique in which a discharge port (gas discharge port) is arranged in a rectifying structure (air spoiler) installed at the rear end of a vehicle body in a vehicle equipped with a fuel cell. ing. According to this technology, since the discharge port is disposed at a position higher than the lower floor of the vehicle body, even when traveling on a flooded road where the water level existing on the road surface is relatively high, It is possible to travel without clogging the outlet with existing water or earth and sand.
- a discharge port gas discharge port
- a rectifying structure air spoiler
- the obstruction that causes the discharge port to be blocked is not limited to water, earth and sand, etc. existing on the road surface. Examples of such obstructions include falling objects from the sky, flying objects, and floating objects.
- the discharge port is arranged in the rectifying structure installed at a relatively high position of the vehicle body, the discharge port is formed in the lower floor behind the vehicle body. Compared to the case of placing the vent, there was a higher possibility that the outlet was blocked by the above-mentioned falling objects or flying objects. And when the discharge port arranged in this rectifying structure is blocked, the exhaust port becomes impossible to exhaust, as in the case where the discharge port is blocked by water or earth and sand, and the power generation by the fuel cell stops, It may become impossible to run.
- the exhaust gas discharged from the fuel cell stack 10 is used as two outlets for discharging the fuel 10 0 0 to the outside.
- Excretion It is equipped with outlets 6 0 ⁇ , 6 2 ⁇ and is located at a position higher than the outlet 6 2 ⁇ force outlet 6 0 ⁇ so that the vehicle 1 0 0 0 Even if the outlet 60 0 ⁇ placed at a relatively low position in the lower floor at the back is blocked by water, earth or sand, etc., the power generation by the fuel cell stack 10 continues and the upper part of the trunk room Exhaust gas can be discharged outside the vehicle 1 0 0 0 by using an unoccluded discharge port 6 2 ⁇ arranged at a relatively high position.
- the outlet 6 2 ⁇ placed at a relatively high position in the upper part of the trunk room may have fallen objects or flying from the sky as described above. Even when blocked by an object, etc., the fuel cell stack 10 continues to generate power, and the unoccluded exhaust gas disposed at a relatively low position below the floor behind the vehicle 100 Exhaust gas can be discharged outside the vehicle 1 0 0 0 using the outlet 6 0 ⁇ .
- the vehicle 100 according to the second embodiment is the same as the vehicle 100 according to the first embodiment except for the switching unit in the fuel cell system 100.
- the switching unit 5 4 ⁇ of the second embodiment will be described.
- FIG. 3 is an explanatory diagram showing a schematic configuration of the switching unit 5 4 A of the second embodiment.
- the pipe 60 is provided with a U-shaped tube 60 u having a convex shape upward in the vertical direction.
- a discharge port 60 o is provided at the end.
- the discharge port 60 0 ⁇ is arranged in the lower part of the floor behind the vehicle 100 (see Fig. 2).
- the pipe 62 is branched and connected to the pipe 60 on the upstream side of the U-shaped pipe 60 u.
- This pipe 62 extends to the rear end of the roof along the inner surface of the body (not shown) of the vehicle 100, and has a discharge port 6 2 ⁇ at the end. . In other words, outlet 6 2. Is higher than the outlet 6 0 ⁇ Is arranged.
- the inner diameter of the pipe 62 is sufficiently smaller than the inner diameter of the pipe 60.
- the pipe 62 is provided with an electrically driven valve 54 V instead of the relief valve 54 V r in the first embodiment. This valve 54 V is always closed during normal driving, that is, when driving on a road surface other than the submerged channel.
- the exhaust gas discharged from the fuel cell stack 10 is discharged from the exhaust port 60 ⁇ into the vehicle 1 000 is discharged to the outside.
- the U-shaped tube 60 u is provided with a pressure sensor 82 for detecting the pressure in the U-shaped tube 60 u. Then, according to the output of the control unit 70 force pressure sensor 82, the opening / closing operation of the valve 54V is controlled.
- the valve 54 V corresponds to the switching valve in the present invention. Further, the pressure sensor 82 corresponds to the detection unit in the present invention.
- FIG. 4 is a flowchart showing the flow of valve control processing for the valve 54 V in this embodiment. This process is executed by the CPU of the control unit 70 while the vehicle 1000 is traveling.
- the CP U detects the pressure Po in the U-shaped tube 60 u by the pressure sensor 82 (step S 1 00), and determines whether or not the pressure Po is equal to or higher than a predetermined threshold value P th. (Step S 1 1 0).
- This threshold value P th is set to a value that allows the determination that the discharge port 60 o is closed during power generation by the fuel cell stack 10.
- step S 1 1 0: NO If the pressure P o in the U-shaped tube 60 u is less than the threshold value P th (step S 1 1 0: NO), the CPU determines that the outlet 60 o is not blocked, and step S Return to 1 00.
- step S 1 1 0: YES when the pressure P o in the U-shaped tube 60 u is equal to or higher than the threshold value P th (step S 1 1 0: YES), the CPU determines that the outlet 60 o is blocked by the plug. Then, the valve 54V is opened (step S 120), and the exhaust gas discharged from the fuel cell stack 10 flows into the pipe 62 and is discharged outside the vehicle 1 000 through the discharge port 62 ⁇ . Then, the valve control process ends. After this valve control processing, the CPU further detects the pressure Po in the U-shaped tube 60 u by the pressure sensor 82, and the pressure Po in the U-shaped tube 60 u becomes the threshold value P th. When the pressure drops below, it may be determined that the blockage of the discharge port 60 o has been eliminated, and the valve 54 V may be closed.
- the exhaust gas discharged from the fuel cell stack 10 can be used as two exhaust ports for discharging to the outside of the vehicle 100 0 0.
- the outlets 6 0 ⁇ , 6 2 ⁇ are provided, and the outlet 6 2 ⁇ is located higher than the outlet 60 0 ⁇ , so it is relatively low while traveling in the submerged channel. Even when the outlet 6 ⁇ ⁇ placed at the position is blocked by water, earth or sand, etc., the fuel cell stack 10 continues to generate power and is placed at a relatively high position. Exhaust gas can be discharged outside the vehicle 1 0 0 0 using the unoccluded outlet 6 2 ⁇ .
- the exhaust gas discharged from the fuel cell is used to discharge outside the vehicle 100 according to the pressure in the U-shaped tube 60 u.
- the exhaust outlet to be switched is automatically or by valve control.
- the discharge port used to discharge the exhaust gas discharged from the fuel cell to the outside of the vehicle 100 is switched according to the water level present on the road surface RS.
- the gas-liquid separator 25 is provided with a water level sensor for detecting the water level present on the road surface RS.
- the vehicle 100 according to the third embodiment is similar to the vehicle 100 according to the second embodiment except that the fuel cell system 100 includes a water level sensor and the switching unit in the fuel cell system 100. Is the same.
- FIG. 5 is an explanatory diagram showing a schematic configuration of the gas-liquid separator 25.
- the gas-liquid separator 25 is a device that separates and removes water contained in the exhaust gas discharged from the diluter 50. The separated water is drained at the bottom of the gas-liquid separator 25. Part 2 is discharged from 5d.
- a water level sensor 84 is provided in the drain portion 25d.
- the vehicle 1 0 0 0 causes the water level on the road surface RS to be higher than the lower part of the drain part 25 5 d. Even if the undulation phenomenon of the water surface WS 1 occurs outside 5d, the undulation phenomenon of the water surface WS 2 can be attenuated in the drain portion 25 d. Therefore, the water level sensor 84 can accurately detect the water level present on the road surface R S.
- the drain portion 25 d corresponds to the damping member in the present invention.
- FIG. 6 is an explanatory diagram showing a schematic configuration of the switching unit 5 4 B of the third embodiment.
- the pipe 60 is different from the first embodiment and the second embodiment and does not include the U-shaped tube 60 u.
- the discharge port 60 o is arranged in the lower floor behind the vehicle 100 (not shown).
- the pipe 6 2 is branched and connected to the pipe 6 0, and this pipe 6 2 is roofed along the inner side surface of the body (not shown) of the vehicle 100 0 0 as in the second embodiment. It extends to the rear end, and a discharge port 6 2 ⁇ is provided at the end. That is, outlet 6 2. Is located higher than the outlet 60 o. Further, the inner diameter of the pipe 62 is sufficiently smaller than the inner diameter of the pipe 60.
- a three-way valve 5 4 Va is disposed at the connection between the pipe 60 and the pipe 62. Then, by controlling the operation of this three-way valve 5 4 V a, exhaust gas discharged from the fuel cell stack 10 is discharged from the exhaust port 60 o to the outside of the vehicle 100 It is possible to switch between discharging to 6 2 and discharging to the outside of the vehicle 1 0 0 0 through the discharge port 6 2 ⁇ .
- the three-way valve 5 4 V a corresponds to the switching valve in the present invention.
- the operation control of the three-way valve 5 4 V a is performed by the control unit 70 according to the output of the water level sensor 84 provided in the gas-liquid separator 25 described above.
- FIG. 4 is a flow chart showing the flow of the valve control process for the three-way valve 54 Va in this embodiment. This process is executed by the CPU of the control unit 70 while the vehicle 1 000 is traveling. At the start of this process, the three-way valve 54 V a is in a communicating state so that the exhaust gas discharged from the twisted battery stack 10 is discharged to the outside of the vehicle 1 000 through the outlet 60 ⁇ . It has been switched.
- the CPU detects the water level Hw in the gas-liquid separator 25, that is, the water level existing on the road surface RS by the water level sensor 84 (step S200), and the water level Hw is determined by a predetermined threshold value. It is determined whether or not it is equal to or higher than H th (step S 210).
- This threshold value H th is set to a value that can be determined that the outlet 60 o is closed during power generation by the fuel cell stack 10.
- step S210 NO
- the CPU determines that the outlet 60 o is not blocked and proceeds to step S200. Return.
- step S210 YES
- the CPU determines that the outlet 60 o is blocked by an obstruction. Then, the communication state of the three-way valve 54 V a is switched (step S 220), the exhaust gas discharged from the fuel cell stack 10 is allowed to flow into the pipe 62, and the vehicle 100 00 To discharge.
- the valve control process ends.
- the CPU further detects the water level Hw in the gas-liquid separator 25 by the water level sensor 84, and the water level Hw in the gas-liquid separator 25 falls below the threshold value Hth. Therefore, the three-way valve 54 V a is connected so that the exhaust gas discharged from the fuel cell stack 10 is discharged from the outlet 60 ⁇ . Do the process of switching May be.
- the two exhaust ports 6 are used as exhaust ports for discharging exhaust gas discharged from the fuel cell stack 10 to the outside of the vehicle 10 00. Equipped with 0 ⁇ , 6 2 ⁇ , outlet 6 2 ⁇ force outlet 6 0 ⁇ is located at a higher position, so it is placed at a relatively low position while traveling on a submerged channel Even if the discharged outlet 6 ⁇ ⁇ is blocked by water, earth or sand, etc., it continues to generate power with the fuel cell stack 10 and is blocked by a relatively high position. With no exhaust 6 2 ⁇ , exhaust gas can be discharged outside the vehicle 1 0 0 0.
- the relief valve 5 4 Vr is disposed in the pipe 62.
- the present invention is not limited to this.
- an orifice may be provided in the pipe 6 2 instead of the relief valve 5 4 V r.
- the exhaust gas discharged from the fuel cell stack 10 is always discharged outside the vehicle 100 from the discharge port 62.
- the pipe 6 2 is connected to the top of the U-shaped pipe 60 u.
- the present invention is Not limited to this.
- the road surface is located at any position of the vehicle 1 0 0 0.
- a water level sensor capable of detecting the water level present on the RS may be provided, and the valve 54 V may be opened when the water level detected by the water level sensor exceeds a predetermined value. .
- the water level sensor 84 is provided in the gas-liquid separator 25, but the present invention is not limited to this.
- FIG. 8 is an explanatory view showing the arrangement of a water level sensor 84 as a modified example.
- a sensor box 8 4 B having a plurality of through-holes is installed at the bottom of the side surface of the stack case 12 in which the fuel cell stack 10 is stored.
- a water level sensor 84 is installed inside the 84B.
- the sensor box 8 4 B corresponds to the damping member in the present invention.
- the sensor box 8 4 B is provided, but the sensor box 8 4 B may not be provided.
- a water level sensor that detects water level by contact with water is used, but an ultrasonic sensor or the like is not in contact with water.
- a water level sensor that detects the distance to the water surface may be used.
- the water level sensor 84 may be provided in another part of the vehicle 100.
- the pipe 62 is connected to the pipe 60, but the present invention is not limited to this.
- the present invention uses an exhaust fluid (exhaust gas or generated water) discharged from a fuel cell (fuel cell stack 10) as a moving body (for example, a vehicle 100 0).
- the discharge pipe for discharging to the outside has a plurality of discharge ports, and at least two of the plurality of discharge ports are arranged at positions where the height of the movable body is different from each other. It only has to be done.
- FIG. 9 is an explanatory view showing the arrangement of the pipe 60 and the pipe 62 as a modification.
- the pipes 62 are not connected to the pipes 60 and are independently installed in the vehicle 1 000.
- a valve 54V 1 and a valve 54V 2 are arranged, respectively. These knobs 54V 1 and 54V2 correspond to the switching section in the present invention.
- the operation control of the valves 54 V 1 and 54 V2 is performed by the control unit 70 according to the output of the water level sensor 84 described in the third embodiment.
- the discharge port 60 ⁇ is disposed at the lower floor behind the vehicle 1 000, and the discharge port 62 ⁇ is disposed at the rear end of the roof of the vehicle 1 000.
- FIG. 10 is an explanatory diagram showing the flow of valve control in this modification. This process is executed by the CPU of the control unit 70 while the vehicle 1 000 is traveling. In this modification, at the start of this process, the valve 54V1 is opened, and the valve 54V2 is closed. Therefore, during normal driving, the exhaust gas discharged from the fuel cell stack 10 is discharged to the outside of the vehicle 1 000 through the discharge port 60 o.
- the CPU detects the water level Hw in the gas-liquid separator 25, that is, the water level present on the road surface RS by the water level sensor 84 (step S300), and the water level Hw is set to a predetermined threshold value H. It is determined whether or not it is greater than or equal to tha (step S 31 0).
- the threshold value H t h a is set to a value at which it can be determined that water, earth and sand, etc. may flow from the outlet 60 ⁇ during power generation by the fuel cell stack 10. Therefore, the threshold value H t h a is set to a value smaller than the threshold value H t h in the third embodiment.
- Step S 3 1 0: NO If the water level Hw in the gas-liquid separator 25 is less than the threshold H tha (Step S 3 1 0: NO) The CPU determines that there is no risk of water, earth and sand flowing in from the outlet 60 o, and returns to step S 300.
- step S 3100 YES
- the valve 54 V 1 arranged in the pipe 60 is closed, and the valve 54 V2 arranged in the pipe 62 is opened (step S 320).
- step S 320 From the fuel cell stack 10 Discharge the exhaust gas to the pipe 62 and discharge it from the outlet 62 o to the outside of the vehicle 1 000.
- the valve control process ends.
- the CPU further detects the water level Hw in the gas-liquid separator 25 by the water level sensor 84, and the water level Hw in the gas-liquid separator 25 falls below the threshold value H tha.
- H tha it is determined that there is no risk of water, earth and sand flowing in from the outlet 60 ⁇ , and the exhaust gas discharged from the fuel cell stack 10 is exhausted from the outlet 60 ⁇ in three directions. Processing for switching the communication state of the valve 54 V a may be performed.
- the two exhaust ports 60 ⁇ , 62 ⁇ are used as the exhaust ports for discharging the exhaust gas discharged from the fuel cell stack 10 to the outside of the vehicle 1 000. Since the outlet 62 ⁇ is arranged at a position higher than the outlet 60 ⁇ , water and water are discharged from the outlet 60 ⁇ placed at a relatively low position while traveling in the submerged channel. When there is a risk of earth and sand flowing in, valve 54V 1 is closed to prevent inflow of water and earth and sand from the outlet 60 ⁇ , and power generation by the fuel cell stack 10 is continued. Exhaust gas can be discharged outside the vehicle 1 000 using an unoccluded outlet 62 ⁇ located at a relatively high position.
- valve 54V2 is closed during normal traveling, but may be opened.
- the valve 54 V 1 is arranged in the pipe 60.
- the U-shaped tube 60 u described in the first embodiment may be provided in a part of the pipe 60. In this way, even if water, earth or sand, etc., flows from the outlet 60 0 ⁇ while traveling on a flooded channel by the vehicle 1 0 0 0, the water level present on the road surface RS is changed to the road surface RS. Until the height from the top to the top of the U-shaped tube 60 u is exceeded, water and earth and sand can be prevented from flowing into the upstream side of the U-shaped tube 60 u.
- valve 5 4 V 2 is disposed in the pipe 62.
- the valve 5 4 V 2 may not be disposed in the pipe 62.
- the inner diameter of the pipe 62 is smaller than the inner diameter of the pipe 60, but the present invention is not limited to this.
- the inner diameter of the pipe 60 and the inner diameter of the pipe 62 may be the same.
- the discharge port 6 2 o is arranged at the rear end of the roof of the vehicle 100, but the present invention is not limited to this.
- the outlet 6 2 ⁇ may be arranged at a position higher than the outlet 60 0 ⁇ , for example, a rear spoiler installed in the vehicle 1 0 0 0, the upper part of the trunk room behind the fuel cell system 1 0 0, It may be arranged on the side portion of the vehicle 100 or the like.
- the present invention is not limited to this.
- the above discharge pipe may be provided with three or more pipes.
- any one of the plurality of outlets is not limited to obstructions, that is, water or earth and sand on the submerged channel, but is blocked by falling objects from the sky, flying objects, floating objects, etc. Even if it is, the exhaust fluid discharged from the fuel cell is discharged from the other discharge ports and the vehicle is traveling Three
- the fuel cell stack 10 is installed at the lower floor of the vehicle 100, but the present invention is not limited to this. For example, it may be installed at other positions such as a space in front of the vehicle 100.
- the present invention is not limited to this.
- the present invention can be applied to various moving bodies that are equipped with a fuel cell and move using the power generated by the fuel cell as a power source.
- the exhaust pipe (exhaust gas or generated water) discharged from the fuel cell (fuel cell stack 10) is discharged to the outside of the mobile body (for example, the vehicle 100).
- a plurality of outlets are provided, and at least two of the plurality of outlets only have to be arranged at different heights in the main body of the moving body.
- “the two outlets are arranged at different positions in the main body of the moving body” means that, as in the above embodiment, one outlet (for example, The upper end of the outlet 60 0 ⁇ of the pipe 60 is not limited to be lower than the lower end of the other outlet (for example, the outlet 6 2 ⁇ of the pipe 62).
- the lower end of one discharge port is lower than the lower end of the other discharge port in the direction of gravity. That is, when the lower end of one discharge port is compared with the lower end of the other discharge port in the direction of gravity, it is only necessary that the upper and lower positions of the lower ends are shifted.
- the upper end of one outlet eg, outlet 60 0 ⁇ of pipe 60
- the lower end of one outlet eg, outlet 60 0 ⁇ of pipe 60
- the lower end of one outlet is lower than the lower end of the other outlet (eg outlet 6 2 ⁇ of pipe 6 2) It only has to be done.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Fuel Cell (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/445,770 US8361675B2 (en) | 2006-12-05 | 2007-12-03 | Moving body equipped with fuel cells |
CN2007800446311A CN101547808B (zh) | 2006-12-05 | 2007-12-03 | 搭载有燃料电池的移动体 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-327843 | 2006-12-05 | ||
JP2006327843A JP5070825B2 (ja) | 2006-12-05 | 2006-12-05 | 燃料電池を搭載した移動体 |
Publications (1)
Publication Number | Publication Date |
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WO2008069331A1 true WO2008069331A1 (ja) | 2008-06-12 |
Family
ID=39492205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2007/073733 WO2008069331A1 (ja) | 2006-12-05 | 2007-12-03 | 燃料電池を搭載した移動体 |
Country Status (4)
Country | Link |
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US (1) | US8361675B2 (ja) |
JP (1) | JP5070825B2 (ja) |
CN (1) | CN101547808B (ja) |
WO (1) | WO2008069331A1 (ja) |
Cited By (1)
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WO2009013606A2 (en) * | 2007-07-26 | 2009-01-29 | Toyota Jidosha Kabushiki Kaisha | Fuel cell vehicle and control method therefor |
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JP2012205330A (ja) * | 2011-03-24 | 2012-10-22 | Toyota Motor Corp | 燃料電池システム |
US8936220B2 (en) * | 2011-12-08 | 2015-01-20 | GM Global Technology Operations LLC | Integrated shaped plastic exhaust system for fuel cell vehicles |
KR20130082305A (ko) * | 2012-01-11 | 2013-07-19 | 삼성전자주식회사 | 연료 전지 시스템 내에서 기액 분리 기능을 제공하는 하이브리드 소음기 |
DE102014009326B4 (de) * | 2014-06-27 | 2023-08-03 | Mann+Hummel Gmbh | Befeuchtungseinrichtung, beispielsweise für eine Brennstoffzelle |
US9638669B2 (en) * | 2014-08-13 | 2017-05-02 | Spectro Scientific, Inc. | Portable fuel dilution meter and method |
JP6311744B2 (ja) | 2016-06-06 | 2018-04-18 | トヨタ自動車株式会社 | 空冷式燃料電池車 |
JP6780370B2 (ja) * | 2016-08-26 | 2020-11-04 | トヨタ自動車株式会社 | 電池冷却装置 |
US10493993B2 (en) * | 2017-09-08 | 2019-12-03 | Ford Global Technologies, Llc | Mitigation for driving through high water |
JP6992485B2 (ja) * | 2017-12-19 | 2022-01-13 | トヨタ自動車株式会社 | 移動体 |
KR102501945B1 (ko) * | 2018-02-06 | 2023-02-20 | 엘지전자 주식회사 | 열교환 효율이 우수한 연료 개질 장치 및 이를 이용한 연료전지 시스템 |
DE102018209925A1 (de) * | 2018-06-19 | 2019-12-19 | Bayerische Motoren Werke Aktiengesellschaft | Fahrzeug mit einem Hochvoltspeicher |
JP2020026159A (ja) * | 2018-08-09 | 2020-02-20 | トヨタ自動車株式会社 | 車両下部構造 |
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Also Published As
Publication number | Publication date |
---|---|
US20100297514A1 (en) | 2010-11-25 |
CN101547808A (zh) | 2009-09-30 |
JP5070825B2 (ja) | 2012-11-14 |
US8361675B2 (en) | 2013-01-29 |
CN101547808B (zh) | 2013-02-13 |
JP2008137571A (ja) | 2008-06-19 |
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