WO2009150923A1 - 燃料電池の車載構造 - Google Patents
燃料電池の車載構造 Download PDFInfo
- Publication number
- WO2009150923A1 WO2009150923A1 PCT/JP2009/059160 JP2009059160W WO2009150923A1 WO 2009150923 A1 WO2009150923 A1 WO 2009150923A1 JP 2009059160 W JP2009059160 W JP 2009059160W WO 2009150923 A1 WO2009150923 A1 WO 2009150923A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- fuel cell
- vehicle
- end plate
- fuel
- 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
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/2483—Details of groupings of fuel cells characterised by internal manifolds
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/2484—Details of groupings of fuel cells characterised by external manifolds
- H01M8/2485—Arrangements for sealing external manifolds; Arrangements for mounting external manifolds around a stack
-
- 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
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04097—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with recycling of the 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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04156—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal
- H01M8/04164—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal by condensers, gas-liquid separators or filters
-
- 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
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
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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 an on-vehicle structure of a fuel cell.
- a fuel cell-equipped vehicle that travels by driving a traction motor with the power of a fuel cell that generates power by receiving supply of reaction gas (fuel gas and oxidizing gas) has been proposed and put into practical use.
- the fuel cell is configured by supporting an end portion of a fuel cell stack in which a plurality of cells are stacked in the cell stacking direction with an end plate.
- the part of the fuel gas supply system which is auxiliary machines of a fuel cell to the above-mentioned end plate (for example, refer patent document 1).
- the present invention has been made in view of such circumstances, and an object thereof is to provide an in-vehicle structure of a fuel cell capable of reducing a pressure loss of a gas flow path of the fuel cell.
- an on-vehicle structure of a fuel cell includes a fuel cell stack in which end portions in a cell stacking direction are supported by end plates, and the fuel cell stack is mounted on the vehicle along the left-right direction of the vehicle.
- the oxidizing gas discharged from the fuel cell stack A merging portion of a plurality of exhaust manifolds for guiding off-gas is disposed on the front side in the vehicle front-rear direction on the end plate.
- the junctions of the plurality of exhaust manifolds that guide the off-gas of the oxidizing gas of the fuel cell stack are arranged on the front side in the vehicle front-rear direction on the end plate.
- the oxidizing gas can be introduced into the front portion of the diluter. Therefore, compared with the case where the oxidizing gas is introduced into the central portion of the diluter, the oxidizing gas can flow smoothly toward the rear exhaust port in the diluter, and the pressure loss can be reduced.
- a pressure regulating valve can be directly connected to the junction.
- the connection is compared with the case where the pressure regulating valve is arranged in the middle of the connection pipe connecting the merging portion of the exhaust manifold and the diluter. Since a space for arranging the diluter can be widened by the amount that the arrangement space of the piping becomes unnecessary or reduced, the size of the diluter can be enlarged.
- a circulation pump for returning the off gas of the fuel gas from the fuel cell stack to the fuel cell stack is disposed between the end plate and the diluter spaced from the end plate. be able to.
- the exhaust manifold in order to suppress the pressure loss in the exhaust manifold that guides the oxidizing gas off-gas, the exhaust manifold has a smooth gas flow shape. As a result, even if the diluter is slightly separated from the end plate, It is possible to effectively use the gap between the two for the arrangement of the circulation pump.
- a pump outlet of a circulation pump that returns the off gas of the fuel gas from the fuel cell stack to the fuel cell stack, and a fuel gas inlet of the end plate into which the off gas of the fuel gas is introduced Is disposed on the opposite side of the end plate in the vehicle front-rear direction, and a fuel gas introduction part from a fuel gas supply source is provided on the pump outlet part side of the connection flow path connecting the pump outlet part and the fuel gas inlet part. It may be provided.
- the distance between the fuel gas inlet and the fuel gas inlet can be secured by lengthening the connecting flow path connecting the pump outlet and the fuel gas inlet, the fuel gas from the fuel gas supply source can be secured. It becomes possible to promote the mixing of the fuel gas from the fuel cell stack into the off-gas.
- the fuel gas inlet portion into which the off-gas of the fuel gas is introduced can be disposed on the front side in the vehicle front-rear direction of the end plate.
- the fuel gas outlet for discharging off-gas of the fuel gas can be disposed on the rear side in the vehicle front-rear direction of the end plate.
- the exhaust manifold that guides the off-gas of the oxidant gas of the fuel cell stack is disposed in the gap on the rear side in the vehicle front-rear direction with respect to the front side in the vehicle front-rear direction of the end plate.
- the fuel gas outlet can be brought close to the circulation pump. Therefore, it is possible to suppress the dew condensation of the off gas of the fuel gas.
- an exhaust valve for exhausting off-gas of the fuel gas from the fuel cell stack to the outside can be disposed in the diluter.
- an oxidizing gas supply channel for supplying an oxidizing gas to the fuel cell stack can be directed forward from the end plate in the vehicle front-rear direction.
- an oxidant gas outlet for discharging the oxidant gas off-gas can be provided on the upper portion of the end plate.
- an on-vehicle structure of a fuel cell capable of reducing the pressure loss of the gas flow path of the fuel cell can be provided.
- FIG. 1 is a configuration diagram of a fuel cell system for a vehicle to which an on-vehicle structure of a fuel cell according to an embodiment of the present invention is applied. It is a top view of the vehicle-mounted structure of the fuel cell which concerns on embodiment of this invention. It is a perspective view of the principal part of the vehicle-mounted structure of the fuel cell which concerns on embodiment of this invention. It is a disassembled perspective view of the principal part of the vehicle-mounted structure of the fuel cell which concerns on embodiment of this invention. It is a front view of the principal part of the vehicle-mounted structure of the fuel cell which concerns on embodiment of this invention. It is a side view of the principal part of the vehicle-mounted structure of the fuel cell which concerns on embodiment of this invention. It is a sectional side view which shows the diluter and exhaust drain valve in the vehicle-mounted structure of the fuel cell which concerns on embodiment of this invention.
- the fuel cell system 1 includes a fuel cell 10 that generates power by receiving supply of reaction gases (oxidation gas and fuel gas), and an oxidant gas piping system 2 that supplies air as an oxidant gas to the fuel cell 10, fuel A hydrogen gas piping system 3 for supplying hydrogen gas as a fuel gas to the battery 10 and a cooling system 4 for cooling the fuel cell 10 are provided.
- reaction gases oxidation gas and fuel gas
- oxidant gas piping system 2 that supplies air as an oxidant gas to the fuel cell 10
- fuel A hydrogen gas piping system 3 for supplying hydrogen gas as a fuel gas to the battery 10 and a cooling system 4 for cooling the fuel cell 10 are provided.
- the oxidizing gas piping system 2 includes an air supply channel 20 that supplies air humidified by a humidifier (not shown) to the fuel cell 10, and an air exhaust flow that guides off-gas of the air discharged from the fuel cell 10 to the diluter 21.
- a passage 22 and an exhaust passage 23 for guiding off-gas of air from the diluter 21 to the outside of the vehicle are provided.
- the air supply channel 20 is provided with an air compressor 24 that pumps air to the fuel cell 10 and an inlet valve 25 that opens and closes the air supply channel 20.
- the air discharge passage 22 is provided with an air pressure regulating valve 26 that adjusts the air pressure and an outlet valve 27 that opens and closes the air discharge passage 22.
- the hydrogen gas piping system 3 includes a hydrogen supply channel 31 for supplying hydrogen gas to the fuel cell 10 from a hydrogen tank (fuel gas supply source) 30 which is a fuel supply source storing high-pressure hydrogen gas, and the fuel cell 10. And a circulation channel 32 for returning the off-gas of the hydrogen gas discharged from the gas to the hydrogen supply channel 31.
- a hydrogen tank (fuel gas supply source) 30 which is a fuel supply source storing high-pressure hydrogen gas
- a circulation channel 32 for returning the off-gas of the hydrogen gas discharged from the gas to the hydrogen supply channel 31.
- the hydrogen supply flow path 31 is provided with an injector 35 that controls the supply of hydrogen gas from the hydrogen tank 30 upstream of the joining position of the circulation flow path 32.
- the injector 35 is an electromagnetically driven on-off valve capable of adjusting the gas flow rate and gas pressure by driving the valve body directly with a predetermined driving cycle with an electromagnetic driving force and separating it from the valve seat.
- the exhaust passage 38 is connected to the circulation passage 32 via a gas-liquid separator 36 and an exhaust / drain valve (exhaust valve) 37.
- the gas-liquid separator 36 collects moisture from hydrogen gas off-gas.
- the exhaust / drain valve 37 discharges (purifies) moisture collected by the gas-liquid separator 36 and off-gas of hydrogen gas containing impurities in the circulation flow path 32 to the outside.
- a hydrogen pump (circulation pump) that pressurizes the hydrogen gas off-gas in the circulation flow path 32 discharged from the fuel cell 10 and sends it to the hydrogen supply flow path 31 side to return to the fuel cell 10 in the circulation flow path 32. 39 is provided.
- the hydrogen gas off-gas discharged through the exhaust / drain valve 37 and the discharge flow path 38 is diluted by the diluter 21 by joining with the air off-gas in the air discharge flow path 22.
- the hydrogen gas is controlled by the injector 35 from the hydrogen tank 30 and supplied to the fuel electrode of the fuel cell 10 through the hydrogen supply passage 31, and the air compressor 24 Electric power is generated by supplying air to the oxidation electrode of the fuel cell 10 through the air supply flow path 20 by driving.
- the off-gas discharged from the hydrogen fuel cell 10 is introduced into the hydrogen supply channel 31 after moisture is removed by the gas-liquid separator 36 by driving the hydrogen pump 39, and the hydrogen gas on the hydrogen tank 30 side is introduced. Are appropriately mixed and supplied to the fuel cell 10 again.
- the exhaust / drain valve 37 is opened at an appropriate timing, moisture collected by the gas-liquid separator 36 and off-gas of hydrogen gas containing impurities in the circulation flow path 32 are introduced into the diluter 21. . Then, the diluter 21 dilutes the off-gas of moisture and hydrogen gas by mixing the off-gas of the air discharged from the fuel cell 10 through the air discharge flow path 22, and then the outside of the vehicle via the exhaust flow path 23.
- the cooling system 4 has a cooling flow path 40 for circulating cooling water to the fuel cell 10.
- the cooling flow path 40 is provided with a radiator 41 that radiates heat of the cooling water to the outside, and a cooling water pump 42 that pressurizes and circulates the cooling water.
- the fuel cell 10 has a fuel cell stack 52 in which a required number of cells 51 that generate power upon receiving a reaction gas are stacked, and end portions in the stacking direction are supported by a common end plate 50. is doing.
- the fuel cell 10 is mounted on the vehicle V so that the fuel cell stack 52 has the stacking direction of the cells 51 along the left-right direction of the vehicle.
- the end plate 50 has a rectangular shape that is long in the longitudinal direction of the vehicle.
- the fuel cell 10 is disposed below the floor of the front seat (not shown), and may be disposed below the rear seat.
- the hydrogen tank 30 is mounted on the rear part of the vehicle V, which is behind the fuel cell 10 in the vehicle front-rear direction.
- the exhaust passage 23 extends rearward in the vehicle front-rear direction from the fuel cell 10, and an exhaust port 23 ⁇ / b> A serving as an outlet to the outside of the vehicle is opened rearward in the vehicle front-rear direction from the fuel cell 10.
- FIG. 2 From the merits of being able to eliminate the necessity of providing and mounting a separate strength member, utilizing the weight of the fuel cell 10 for vibration absorption, eliminating the need for an assembly error absorbing portion, and reducing the size, FIG. As shown in FIG. 2, the auxiliary devices of the fuel cell 10 are attached to the end plate 50 of the fuel cell 10.
- the upper end portion of the end plate 50 has an air outlet portion (oxidizing gas) for discharging off-gas of the air from the fuel cell stack 52 at a plurality of locations in the front-rear direction of the vehicle, specifically, at two locations. 50A of exit parts are formed. Further, at the lower end portion of the end plate 50, air inlet portions (oxidizing gas inlet portions) 50B through which air to the fuel cell stack 52 is introduced are formed at a plurality of locations in the front-rear direction of the vehicle, specifically at two locations. Has been.
- a hydrogen gas inlet portion (fuel gas inlet portion) 50C into which hydrogen gas and hydrogen gas off-gas are introduced is formed at the upper portion of the front end of the end plate 50 in the vehicle longitudinal direction.
- a hydrogen gas outlet (fuel gas outlet) 50D for discharging off-gas of hydrogen gas is formed at the lower part of the rear end of the end plate 50 in the vehicle longitudinal direction.
- a cooling water inlet 50E into which cooling water is introduced is formed below the hydrogen gas inlet 50C at the front end in the vehicle front-rear direction of the end plate 50, and a rear end in the vehicle front-rear direction of the end plate 50 is formed.
- a cooling water outlet 50F for discharging cooling water is formed above the hydrogen gas outlet 50D.
- An upper portion of the end plate 50 includes an air exhaust manifold (hereinafter referred to as an air exhaust manifold) 63 that guides off-gas of air from the air outlet portion 50A on the front side in the vehicle longitudinal direction, and an air outlet portion 50A on the rear side in the vehicle longitudinal direction.
- An air exhaust manifold member (hereinafter referred to as an air exhaust member) 64 having an air exhaust manifold 63 for guiding the off-gas of the air is attached. As shown in FIG. 5, the air exhaust manifold member 64 is disposed within the range of the end plate 50 in the vehicle longitudinal direction.
- the air exhaust member 64 has a plurality of air exhaust manifolds 63 and two air exhaust manifolds 63 and, specifically, two air exhaust manifolds 63 joined together.
- the end plate 50 is disposed in front of the center in the vehicle front-rear direction.
- a pressure sensor 66 shown in FIG. 4 is attached to the junction 65 so as to protrude forward in the vehicle front-rear direction.
- the confluence 65 opens vertically downward, and the air pressure regulating valve 26 is directly connected to the lower opening 65A of the confluence 65 at the upper opening 26A.
- the air pressure regulating valve 26 has the lower opening 26B opened vertically downward, and the internal flow path extends along the vertical direction.
- the air exhaust member 64 constitutes a part of the air discharge passage 22 described above.
- the above-described diluter 21 is opened upward on the end plate 50 side in the front-rear direction of the vehicle and is provided with a connection port 21A.
- the lower opening 26B of the air pressure regulating valve 26 is connected to the connection port 21A.
- the air exhaust manifold member 64 described above is gently curved toward the junction 65 opening downward as shown in FIG.
- the merging portion 65 of the air exhaust member 64, the air pressure regulating valve 26, and the diluter 21 have a gap S between them and the end plate 50.
- the diluter 21 has an exhaust port 21B formed from the rear end in the vehicle front-rear direction toward the rear, and the exhaust port 21B is connected to the exhaust channel 23 described above.
- a connection port 21C that opens in the direction of the end plate 50 is formed on the end plate 50 side of the diluter 21 in the front-rear direction of the vehicle, and an upper portion of the connection port 21C is formed as shown in FIG.
- An attachment port 21D for attaching the exhaust / drain valve 37 is formed to open upward. That is, the exhaust / drain valve 37 is disposed in the diluter 21.
- the above-described gap S is formed between the diluter 21 and the end plate 50, and arranged in the gap S, as shown in FIG.
- a gas-liquid separator 36 connecting the hydrogen gas outlet 50D is attached.
- the gas-liquid separator 36 is provided with a connection port 36A connected to the hydrogen gas outlet 50D on the end plate 50 side, and a connection port 36B opening upward at the top thereof.
- the exhaust / drain valve 37 attached to the attachment port 21D of the diluter 21 opens and closes the connection port 21C of the diluter 21.
- the exhaust / drain valve 37 opens the connection port 21C, the hydrogen gas off-gas from the hydrogen gas outlet 50D is introduced into the diluter 21 together with the water stored in the gas-liquid separator 36, while the connection port 21C is When closed, the hydrogen gas off-gas discharged from the hydrogen gas outlet 50D and having its water content removed by the gas-liquid separator 36 is discharged from the upper connection port 36B.
- the above-described hydrogen pump 39 is connected to the connection port 36B at the top of the gas-liquid separator 36.
- the hydrogen pump 39 has a lower pump inlet 39A connected to the upper connection port 36B of the gas-liquid separator 36, and sucks off hydrogen gas from the connection port 36B and discharges it from the upper pump outlet 39B.
- the hydrogen pump 39 is also disposed in the gap S between the diluter 21 and the end plate 50 and is fixed to the end plate 50.
- the hydrogen pump 39 has a longitudinal direction along the vehicle front-rear direction
- the pump unit 70 is positioned on the rear side in the vehicle front-rear direction, and is located below the air exhaust member 64 and behind the junction 65 in the vehicle front-rear direction.
- the hydrogen pump 39 is disposed on the rear side in the vehicle front-rear direction of the air pressure regulating valve 26 at a height position equivalent to that of the air pressure regulating valve 26.
- the pump outlet portion 39B of the hydrogen pump 39 disposed at the rear portion in the vehicle longitudinal direction of the end plate 50 is connected to the hydrogen gas inlet portion 50C disposed at the front end portion of the end plate 50 opposite to the vehicle longitudinal direction.
- a hydrogen intake manifold member (hereinafter referred to as a hydrogen intake manifold member) 76 having a connection flow path 75 to be connected to is provided.
- the hydrogen intake manifold member 76 is disposed on the opposite side of the air exhaust member 64 from the end plate 50, extends in the vehicle front-rear direction, and extends to the pump outlet portion 39 B of the hydrogen pump 39 and the hydrogen gas inlet portion 50 C of the end plate 50. And a hydrogen gas introduction portion (fuel gas introduction portion) 77 that merges on the side of the connection passage 75 close to the pump outlet 39B.
- the connection flow path 75 passes between the pressure sensor 66 of the air exhaust member 64 and the air pressure regulating valve 26 and is connected to the hydrogen gas inlet 50C.
- the hydrogen gas introduction portion 77 is disposed on the opposite side of the connection flow path 75 from the end plate 50 and extends rearward in the vehicle front-rear direction, and introduces fuel gas from the hydrogen tank 30 at the rear of the vehicle into the connection flow path 75.
- a pressure sensor 78 is attached to a position where the hydrogen gas introduction part 77 joins the connection flow path 75 so as to protrude to the side opposite to the end plate 50.
- the hydrogen gas inlet 50C side and the hydrogen gas introduction portion 77 from the joining position of the connection flow path 75 constitute a part of the hydrogen supply flow path 31 described above, and a hydrogen pump than the joining position of the connection flow path 75.
- the 39 side constitutes a part of the circulation channel 32 described above.
- the air compressor 24 described above is disposed outside the passenger compartment in front of the fuel cell 10 in the front-rear direction of the vehicle in order to reduce noise and vibration in the passenger compartment.
- an air intake manifold 50 for guiding the air from the air compressor 24 to the front air inlet 50B in the front-rear direction of the vehicle is formed in the front-rear air inlet 50B formed in the lower part of the end plate 50.
- An air intake manifold member 82 having an (oxidation gas supply channel; hereinafter referred to as air intake manifold) 81 and an air intake manifold 81 that guides to the air inlet portion 50B on the rear side in the vehicle front-rear direction is attached.
- the air intake manifold member 82 constitutes a part of the air supply flow path 20 from the air compressor 24, and as a whole extends from the end plate 50 toward the front in the vehicle front-rear direction.
- One inlet 82A is connected to the air compressor 24 side.
- the introduction port 82A is internally divided into the two air intake manifolds 81 described above.
- the air intake manifold member 82 is disposed in the above-described gap S between the end plate 50 and the diluter 21 and below the hydrogen pump 39 and the air pressure regulating valve 26.
- the above-described radiator 41 is disposed at the front portion of the vehicle in order to increase the cooling efficiency, and the cooling water pump 42 is also disposed outside the vehicle compartment in front of the fuel cell 10 in the front-rear direction of the vehicle in order to reduce noise and vibration in the vehicle interior.
- a cooling water inlet pipe 85 constituting a part of the cooling flow path 40 from the cooling water pump 42 is attached to the cooling water inlet 50E formed on the front side in the vehicle front-rear direction of the end plate 50.
- the cooling water introduction pipe 85 extends from the end plate 50 toward the front in the vehicle front-rear direction, and is between the end plate 50 and the air intake manifold member 82 and below the hydrogen pump 39 and the air pressure regulating valve 26. Is arranged.
- a cooling water discharge pipe 86 constituting a part of the cooling flow path 40 to the radiator 41 is attached to the cooling water outlet 50F formed on the rear side in the vehicle front-rear direction of the end plate 50.
- the cooling water discharge pipe 86 extends forward from the end plate 50 in the front-rear direction of the vehicle, and is bent so that the front end portion is along the front side of the fuel cell 10.
- the cooling water discharge pipe 86 is disposed between the hydrogen pump 39 and the air pressure regulating valve 26 and the upper part of the diluter 21 and above the cooling water introduction pipe 85 and the air intake manifold member 82.
- the cooling water discharge pipe 86 is formed with an attachment portion 89 on the opposite side of the end plate 50 to which the upper joint portion 88 of the diluter 21 is attached.
- the merging portions 65 of the two air exhaust manifolds 63 for guiding the off-gas of the air in the fuel cell stack 52 are arranged on the front side in the vehicle front-rear direction in the end plate 50. Therefore, when the diluter 21 is enlarged in the vehicle front-rear direction and the off-gas of air is exhausted from the rear side in the vehicle front-rear direction than the fuel cell stack 52 through the diluter 21, the front portion of the diluter 21 It becomes possible to introduce air into the.
- the air pressure regulating valve 26 is directly connected to the merging portion 65 of the two air exhaust manifolds 63 of the air exhaust manifold member 64, the air pressure regulating valve 26 is arranged in the middle of the connection pipe connecting the merging portion 65 of the air exhaust manifold 63 and the diluter 21.
- positioning the diluter 21 can be ensured now by the part which the arrangement
- the internal flow path of the air pressure regulating valve 26 is aligned along the vertical direction (top and bottom direction), water is unlikely to collect.
- the internal air exhaust manifold 63 has a smooth gas flow shape and secures a distance to the junction 65. Even if the diluter 21 is slightly separated from the end plate 50, the gap S between them can be used effectively for the arrangement of the hydrogen pump 39 and the like.
- the heavy and vibrating hydrogen pump 39 is fixed to the end plate 50, the mounting rigidity can be easily secured and the vibration-proofing property is excellent.
- the pump outlet portion 39B of the hydrogen pump 39 and the hydrogen gas inlet portion 50C of the end plate 50 are disposed on the opposite side of the end plate 50 in the vehicle front-rear direction, and the hydrogen gas introduction portion 77 is provided on the pump outlet portion 39B side.
- the distance between the hydrogen gas inlet 77 and the hydrogen gas inlet 50C can be secured by lengthening the flow path connecting the pump outlet 39B and the hydrogen gas inlet 50C. Therefore, it becomes possible to promote the mixing of the hydrogen gas from the hydrogen tank 30 into the off gas of the hydrogen gas from the fuel cell stack 52.
- the hydrogen gas inlet 50C into which hydrogen gas off-gas is introduced is arranged on the front side in the vehicle front-rear direction of the end plate 50, the length of the flow path from the hydrogen tank 30 arranged behind the fuel cell 10 in the vehicle front-rear direction. It is easy to adopt a structure that suppresses pressure loss while ensuring the thickness.
- the hydrogen gas outlet 50D that discharges off-gas of hydrogen gas is arranged on the rear side in the vehicle front-rear direction of the end plate 50, the junction 65 of the two air exhaust manifolds 63 on the front side in the vehicle front-rear direction on the end plate 50 as described above.
- the hydrogen pump 39 is arranged in the gap S on the rear side in the vehicle front-rear direction with respect to the joining portion 65 generated by the arrangement, the hydrogen gas outlet 50D can be brought close to the hydrogen pump 39.
- the exhaust drain valve 37 since the exhaust drain valve 37 is disposed in the diluter 21, the exhaust drain valve 37 can be insulated by the diluter 21 or received heat from the diluter 21 to the exhaust drain valve 37, and the exhaust drain valve 37 can be frozen. It becomes possible to suppress.
- the gas-liquid separator 36 By connecting the hydrogen gas outlet 50D, the gas-liquid separator 36, and the diluter 21 and inserting the exhaust drain valve 37 into the diluter 21, the gas-liquid separator 36, exhaust drainage from the hydrogen gas outlet 50D. Since the flow path to the diluter 21 via the valve 37 can be formed, the exhaust / drain valve 37 is attached as compared with the case where the gas-liquid separator 36, the exhaust / drain valve 37 and the diluter 21 are connected in series. Becomes easy. As a result, the tool cost or the like of the mounting tool can be reduced, and the influence on the diluter volume due to the tool cost or the like can be suppressed.
- air is supplied to the fuel cell stack 52 from the air compressor 24 disposed in front of the fuel cell 10 in the vehicle front-rear direction. It is possible to minimize the flow path for supplying the gas, and the responsiveness is improved. Moreover, the diluter volume can be maximized.
- the air outlet portion 50A for discharging the off-gas of air is provided at the upper portion of the end plate 50, the water entering from the exhaust system of the off-gas of air flows back into the fuel cell stack 52 from the air outlet portion 50A when the vehicle is submerged. Can be suppressed.
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- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
Description
そして、水素ガスの燃料電池10から排出されたオフガスが、水素ポンプ39の駆動により、気液分離器36で水分が除去されてから水素供給流路31に導入され、水素タンク30側の水素ガスと適宜混合されて再び燃料電池10に供給される。
また、排気排水弁37を希釈器21に配置したため、排気排水弁37を希釈器21で断熱すること或いは希釈器21から排気排水弁37に受熱させることが可能となり、排気排水弁37の凍結を抑制することが可能になる。
Claims (9)
- セルの積層方向の端部がエンドプレートで支持された燃料電池スタックを、前記積層方向を車両左右方向に沿わせて車載し、前記燃料電池スタックからの酸化ガスのオフガスを希釈器を介して前記燃料電池スタックよりも車両前後方向後側から排気する燃料電池の車載構造において、
前記燃料電池スタックから排出される前記酸化ガスのオフガスを案内する複数のエキゾーストマニホールドの合流部が、前記エンドプレートにおける車両前後方向前側に配置されている燃料電池の車載構造。 - 前記合流部に調圧弁が直結されている請求項1に記載の燃料電池の車載構造。
- 前記燃料電池スタックに該燃料電池スタックからの燃料ガスのオフガスを戻す循環ポンプが、前記エンドプレートと該エンドプレートから離間配置された前記希釈器との間に配置されている請求項1に記載の燃料電池の車載構造。
- 前記燃料電池スタックに該燃料電池スタックからの燃料ガスのオフガスを戻す循環ポンプのポンプ出口部と、前記燃料ガスのオフガスが導入される前記エンドプレートの燃料ガス入口部とが、前記エンドプレートにおける車両前後方向反対側に配置されており、これらポンプ出口部と燃料ガス入口部とを結ぶ接続流路の前記ポンプ出口部側に、燃料ガス供給源からの燃料ガス導入部が設けられている請求項1に記載の燃料電池の車載構造。
- 燃料ガスのオフガスが導入される燃料ガス入口部が前記エンドプレートの車両前後方向前側に配置されている請求項1または4に記載の燃料電池の車載構造。
- 燃料ガスのオフガスを排出する燃料ガス出口部が前記エンドプレートの車両前後方向後側に配置されている請求項1または4に記載の燃料電池の車載構造。
- 前記燃料電池スタックからの燃料ガスのオフガスを外部に排気するための排気弁が前記希釈器に配置されている請求項1に記載の燃料電池の車載構造。
- 前記燃料電池スタックに酸化ガスを供給する酸化ガス供給流路が前記エンドプレートから車両前後方向前方に指向する請求項1に記載の燃料電池の車載構造。
- 酸化ガスのオフガスを排出する酸化ガス出口部が前記エンドプレートの上部に設けられている請求項1に記載の燃料電池の車載構造。
Priority Applications (5)
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US12/996,911 US8607906B2 (en) | 2008-06-10 | 2009-05-19 | Vehicle-installation structure for fuel cell |
EP09762353.2A EP2289727B1 (en) | 2008-06-10 | 2009-05-19 | Structure for mounting fuel cell battery on vehicle |
CA2726514A CA2726514C (en) | 2008-06-10 | 2009-05-19 | Vehicle-installation structure for fuel cell |
CN200980122028.XA CN102056760B (zh) | 2008-06-10 | 2009-05-19 | 燃料电池的车载结构 |
KR1020107027664A KR101245299B1 (ko) | 2008-06-10 | 2009-05-19 | 연료전지의 차량 탑재구조 |
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JP2008152068A JP4403563B2 (ja) | 2008-06-10 | 2008-06-10 | 燃料電池の車載構造 |
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CN (1) | CN102056760B (ja) |
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EP2289727A1 (en) | 2011-03-02 |
CA2726514C (en) | 2013-06-18 |
EP2289727A4 (en) | 2012-01-18 |
EP2289727B1 (en) | 2015-03-25 |
KR20110006719A (ko) | 2011-01-20 |
CN102056760B (zh) | 2014-02-19 |
JP2009298196A (ja) | 2009-12-24 |
US20110079455A1 (en) | 2011-04-07 |
KR101245299B1 (ko) | 2013-03-19 |
JP4403563B2 (ja) | 2010-01-27 |
US8607906B2 (en) | 2013-12-17 |
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