WO2012150674A1 - 燃料電池車両 - Google Patents
燃料電池車両 Download PDFInfo
- Publication number
- WO2012150674A1 WO2012150674A1 PCT/JP2012/060226 JP2012060226W WO2012150674A1 WO 2012150674 A1 WO2012150674 A1 WO 2012150674A1 JP 2012060226 W JP2012060226 W JP 2012060226W WO 2012150674 A1 WO2012150674 A1 WO 2012150674A1
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- WIPO (PCT)
- Prior art keywords
- fuel cell
- vehicle
- gas tank
- cell stack
- cell unit
- 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
-
- 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
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/01—Arrangement of fuel conduits
- B60K15/013—Arrangement of fuel conduits of gas conduits
-
- 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
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/03006—Gas tanks
-
- 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
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/063—Arrangement of tanks
-
- 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
- B60K8/00—Arrangement or mounting of propulsion units not provided for in one of the preceding main groups
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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
-
- 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
-
- 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
- B60K2001/0416—Arrangement in the rear part of the vehicle
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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
- B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
- B60K2001/0438—Arrangement under the floor
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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
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/063—Arrangement of tanks
- B60K2015/0634—Arrangement of tanks the fuel tank is arranged below the vehicle floor
-
- 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
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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 fuel cell vehicle, and more particularly to a fuel cell vehicle equipped with a fuel cell stack having an intake duct and an exhaust duct.
- the fuel cell system includes a hydrogen gas supply device, an air supply device, and a cooling device.
- a hydrogen gas supply device in order to improve the output density of the fuel cell stack, air is pressurized by a compressor and supplied to the fuel cell stack, while the fuel cell stack is cooled by cooling water.
- air is pressurized by a compressor and supplied to the fuel cell stack, while the fuel cell stack is cooled by cooling water.
- a fuel cell vehicle equipped with a water-cooled fuel cell system has a structure in which a fuel cell stack and its attached device are assembled to a ladder-like subframe and are integrally mounted on the rear part of the vehicle body.
- the fuel cell system can be mounted on the vehicle, and the fuel cell system can be protected by the subframe when a forward impact force acts on the rear portion of the vehicle.
- the fuel cell stack cannot be mounted on the lower portion of the vehicle, and there is an inconvenience that the vehicle interior space is reduced by the fuel cell stack.
- the present invention provides a fuel cell system that includes a fuel cell unit in which a fuel cell stack, an intake duct, and an exhaust duct are integrated, and a gas tank that stores fuel gas.
- a fuel cell vehicle in which the gas tank is arranged in a space below the rear floor connected via a wall portion and adjacent to the vertical wall portion, and the fuel cell unit is arranged behind the gas tank, the vehicle width
- An axle beam extending in the direction and communicating between the left and right rear wheels is disposed behind the gas tank, the fuel cell unit is disposed between the axle beam and a rear bumper, and an upstream portion of the intake duct or the exhaust
- the vertical wall at the front and rear of the fuel cell stack is covered by at least one of the downstream portions of the duct. And butterflies.
- the axle beam extending in the vehicle width direction and communicating between the left and right rear wheels is disposed behind the gas tank, and the fuel cell unit is disposed between the axle beam and the rear bumper. Therefore, the fuel cell system can be efficiently mounted under the floor at the rear of the vehicle.
- the fuel cell unit can be prevented from colliding with the gas tank.
- the front and rear vertical walls of the fuel cell stack were covered by at least one of the upstream portion of the intake duct and the downstream portion of the exhaust duct.
- the intake duct or exhaust duct is deformed to absorb the impact force and protect the fuel cell stack itself. can do. Therefore, in the present invention, when the fuel cell system is efficiently mounted under the floor at the rear of the vehicle and a forward impact force acts on the rear of the vehicle, both the gas tank and the fuel cell stack can be protected. . Furthermore, since the left and right sides of the fuel cell unit are covered with the left and right sides of the axle beam and the left and right rear wheels, the fuel cell can be configured with a simple structure when left and right impacts are applied to the left or right side of the vehicle. The stack can be protected from impact force.
- FIG. 1 is a side view of the rear portion of the fuel cell vehicle.
- FIG. 2 is a plan view of the rear portion of the fuel cell vehicle.
- FIG. 3 is an exploded perspective view of the fuel cell unit.
- FIG. 4 is a perspective view of the fuel cell unit.
- FIG. 5 is a plan view of the fuel cell unit.
- Example 6 is a longitudinal sectional view of the fuel cell unit taken along line AA in FIG. (Example)
- reference numeral 1 denotes a fuel cell vehicle that is a four-wheeled vehicle.
- the fuel cell vehicle 1 includes an air-cooled fuel cell system 2 that uses air as a reaction gas and a cooling medium.
- the fuel cell system 2 includes a fuel cell unit 6 in which a fuel cell stack 3, an intake duct 4, and an exhaust duct 5 are integrated, and a gas tank 7 for storing fuel gas. ing.
- the gas tank 7 is disposed in a space 11 below the rear floor 10 connected to the front floor 8 via the vertical wall portion 9 and adjacent to the vertical wall portion 9, and behind the gas tank 7.
- the fuel cell unit 6 is arranged.
- an axle beam 14 that extends in the vehicle width direction and communicates between the left and right rear wheels 12 and 13 is disposed behind the gas tank 7, and the fuel cell unit 6 is disposed on the axle beam 14 and the rear bumper 15.
- at least one of the upstream part of the intake duct 4 and the downstream part of the exhaust duct 5 covers the front and rear vertical walls 3a and 3b of the fuel cell stack 3.
- the axle beam 14 that extends in the vehicle width direction and communicates between the left and right rear wheels is disposed behind the gas tank 7, and the fuel cell unit 6 is disposed between the axle beam 14 and the rear bumper 15.
- the fuel cell system 2 is efficiently mounted under the rear floor 10 which is the floor at the rear of the vehicle.
- the axle beam 14 restricts the movement of the fuel cell unit 6 to the front of the vehicle and prevents the fuel cell unit 6 from colliding with the gas tank 7. .
- at least one of the upstream portion of the intake duct 4 or the downstream portion of the exhaust duct 5 covers the front and rear vertical walls 3a and 3b of the fuel cell stack 3, and the fuel cell unit 6 is subjected to an impact.
- the intake duct 4 or the exhaust duct 5 is deformed to absorb the impact force, and the fuel cell stack 3 itself Protect.
- the fuel cell system 2 when the fuel cell system 2 is efficiently mounted under the rear floor 10 which is a rear floor of the vehicle and a forward impact force acts on the rear portion of the fuel cell vehicle 1, the gas tank 7 and the fuel cell stack 3 are protected. Furthermore, since the left and right sides of the fuel cell unit 6 are covered with the left and right sides of the axle beam 14 and the left and right rear wheels 12 and 13, when a left and right impact force acts on the left or right side of the vehicle. The fuel cell stack 3 is protected from impact force.
- the fuel cell unit 6 includes a frame 16 for fixing the fuel cell stack 3, the intake ducts 4 attached to the left and right below the fuel cell stack 3, fuel, and the like.
- the exhaust duct 5 is provided to cover the upper portion of the battery stack 3 and the front and rear portions.
- the exhaust duct 5 includes a front exhaust duct 17 and a rear exhaust duct 18.
- the front exhaust duct 17 includes a front upper cover 19 that covers the upper front side of the fuel cell stack 3 and a front cover 20 that covers the front side of the fuel cell stack 3.
- the rear exhaust duct 18 includes a rear upper cover 21 that covers the rear upper part of the fuel cell stack 3 and a rear cover 22 that covers the rear side of the fuel cell stack 3.
- the front and rear vertical walls 3a and 3b of the fuel cell stack 3 are covered with, for example, a downstream portion of the exhaust duct 5 as shown in FIG.
- the passages 24, 25 extend in the vehicle vertical direction as shown in FIG. Thereby, an impact force in the vehicle front-rear direction is generated between the front-side passage 24 located in the downstream portion of the front cover 20 of the exhaust duct 5 and the rear-side passage 25 located in the downstream portion of the rear cover 22 of the exhaust duct 5. It is possible to enhance the absorbability of the impact force acting from the front-rear direction of the vehicle toward the direction in which it easily deforms when acting.
- a rechargeable secondary battery (also referred to as “battery”) 26 is disposed above the fuel cell unit 6. That is, as shown in FIG. 1, the fuel cell stack 3 generates power on the rear floor 10 between the rear seat 27 of the fuel cell vehicle 1, the rear bumper 15, and the back door 28 positioned above the rear bumper 15.
- the rechargeable secondary battery 26 is arranged so that the vehicle can run even when stopped.
- the secondary battery 26 is more rigid than the fuel cell unit 6 and the gas tank 7 and has a structure that is not easily crushed. For this reason, even if the secondary battery 26 is arranged above the fuel cell unit 6 and a forward impact force acts on the rear part of the vehicle and the secondary battery 26 moves forward of the vehicle, the secondary battery 26 The fuel cell unit 6 and the gas tank 7 are not collided. Thereby, the gas tank 7 and the fuel cell unit 6 can be protected from collision with the secondary battery 26.
- the fuel cell stack 3 includes an air intake surface 29 for taking in air as shown in FIG. 6 and an air discharge surface 30 for discharging air to the outside as shown in FIGS. 3 and 6. It is provided on the sides facing each other. At this time, the fuel cell stack 3 is disposed below the rear floor 10 of the fuel cell vehicle 1 with the air discharge surface 30 facing upward, and a plurality of fans 31 for sucking air are disposed on the air discharge surface 30 side. .
- the fuel cell stack 3 is fixed to the frame-shaped frame 16 surrounding both the front and rear sides and the left and right sides of the fuel cell stack 3, and the intake duct 4 and the exhaust duct 5 are connected to the outer side of the frame 16. It is attached.
- the passage (not shown) of the intake duct 4 is made to run along the air intake surface 29 and the vertical walls (not shown) of the left and right ends of the fuel cell stack 3, and the left and right ends of the passage and the center.
- Each part has an air intake 23 opened upward.
- the front-side passage 24 and the rear-side passage 25 are arranged along the air discharge surface 30 and the front and rear vertical walls 3 a and 3 b of the fuel cell stack 3, and these passages. 24, a pair of air discharge ports 32 and 33 are opened at both front and rear ends of the passage 25, respectively.
- the air discharge port 32 on the front side discharges the air flowing from the upper side to the lower side in front of the intake duct 4 to the rear of the vehicle along the lower surface of the intake duct 4 as indicated by the hatched arrows in FIG. Yes.
- the rear side air discharge port 33 discharges the air flowing backward from the upper side of the intake duct 4 to the rear side of the vehicle.
- the front and rear vertical walls 3a and 3b of the fuel cell stack 3 are covered by the downstream portion of the exhaust duct 5, but the structure of the intake duct 4 and the exhaust duct 5 is used.
- the front and rear vertical walls of the fuel cell stack 3 may be covered by the upstream part of the intake duct 4.
Abstract
Description
従来、車両用の燃料電池システムでは、燃料電池スタックの出力密度を向上させるため、空気をコンプレッサで加圧して燃料電池スタックに供給する一方、冷却水によって燃料電池スタックを冷却する水冷式の燃料電池システムが多い。
このような構造の場合、燃料電池システムの車両への搭載性が向上するとともに、車両の後部に前向きの衝撃力が作用した場合に、サブフレームによって燃料電池システムを保護できる。
しかし、サブフレームの分だけ車両下部の空間が減少するため、車両の下部には燃料電池スタックを搭載できず、燃料電池スタックにより車両の室内空間が減少するという不都合がある。
ところで、燃料電池システムには、空気を反応ガス兼冷却媒体として使用する空冷式の燃料電池システムがある。
この空冷式の燃料電池システムは、吸気ダクトと排気ダクトとファンとにより燃料電池スタックヘの空気供給と冷却とが行えるため、水冷式の燃料電池システムと比べて付属装置の構造が簡素である。
このため、空冷式の燃料電池システムは車両の下部へ搭載し易い。
しかし、車両の後部に前向きの衝撃力が作用した場合に燃料電池システムを保護する構造を追加することが必要となるという不都合がある。
また、車両の後部に前向きの衝撃力が作用した場合、アクスルビームによって燃料電池ユニットの車両前方への移動を規制し、燃料電池ユニットがガスタンクと衝突することを防止できる。
更に、吸気ダクトの上流部、または、排気ダクトの下流部のうち少なくとも一方によって燃料電池スタックの前部と後部の縦壁を覆った。
このため、燃料電池ユニットが衝撃力で車両前方へ移動し、リヤバンパとアクスルビームとの間に挟まれた場合、吸気ダクトまたは排気ダクトを変形させて衝撃力を吸収し、燃料電池スタック自体を保護することができる。
よって、本発明では、燃料電池システムを車両後部のフロア下に効率的に搭載し、かつ、車両の後部に前向きの衝撃力が作用した場合、ガスタンクと燃料電池スタックの両者を保護することができる。
さらに、燃料電池ユニットの左右両側がアクスルビームの左右両側部と左右の後輪とによって覆われるため、車両の左側部または右側部に左右方向の衝撃力が作用した場合、簡素な構造で燃料電池スタックを衝撃力から保護できる。
図1及び図2において、1は四輪車である燃料電池車両である。
この燃料電池車両1は、空気を反応ガス兼冷却媒体として使用する空冷式の燃料電池システム2を備えている。
そして、この燃料電池システム2は、図1~図4に示す如く、燃料電池スタック3と吸気ダクト4と排気ダクト5とを一体化した燃料電池ユニット6と燃料ガスを貯蔵するガスタンク7とを備えている。
このとき、フロントフロア8に縦壁部9を介して連結されるリヤフロア10の下方であり、かつ、前記縦壁部9と隣接する空間11に前記ガスタンク7を配置し、このガスタンク7の後方に前記燃料電池ユニット6を配置している。
また、燃料電池車両1は、車両幅方向に延びるとともに左右の後輪12、13間を連絡するアクスルビーム14を前記ガスタンク7後方に配置し、前記燃料電池ユニット6を前記アクスルビーム14とリヤバンパ15との間に配置し、前記吸気ダクト4の上流部、または、前記排気ダクト5の下流部のうち少なくとも一方によって前記燃料電池スタック3の前部と後部の縦壁3a、3bを覆う構成とする。
そして、車両幅方向に延びるとともに、左右の後輪間を連絡する前記アクスルビーム14を前記ガスタンク7の後方に配置し、前記燃料電池ユニット6をアクスルビーム14と前記リヤバンパ15との間に配置したため、前記燃料電池システム2を車両後部のフロアである前記リヤフロア10下に効率的に搭載するものである。
また、車両の後部に前向きの衝撃力が作用した場合、前記アクスルビーム14によって前記燃料電池ユニット6の車両前方への移動を規制し、燃料電池ユニット6が前記ガスタンク7と衝突することを防止する。
更に、前記吸気ダクト4の上流部、または、前記排気ダクト5の下流部のうち少なくとも一方によって前記燃料電池スタック3の前部と後部の縦壁3a、3bを覆い、前記燃料電池ユニット6が衝撃力で車両前方へ移動し、前記リヤバンパ15と前記アクスルビーム14との間に挟まれた場合、前記吸気ダクト4または前記排気ダクト5を変形させて衝撃力を吸収し、前記燃料電池スタック3自体を保護する。
よって、本発明では、前記燃料電池システム2を車両後部のフロアである前記リヤフロア10下に効率的に搭載し、かつ、前記燃料電池車両1の後部に前向きの衝撃力が作用した場合、前記ガスタンク7と前記燃料電池スタック3の両者を保護している。
さらに、前記燃料電池ユニット6の左右両側が前記アクスルビーム14の左右両側部と左右の後輪12、13とによって覆われるため、車両の左側部または右側部に左右方向の衝撃力が作用した場合、前記燃料電池スタック3を衝撃力から保護している。
このとき、この排気ダクト5は、フロント排気ダクト17とリヤ排気ダクト18とからなる。そして、フロント排気ダクト17は、前記燃料電池スタック3の前側上部を覆うフロントアッパカバー19と燃料電池スタック3の前側を覆うフロントカバー20とからなる。また、前記リヤ排気ダクト18は、前記燃料電池スタック3の後側上部を覆うリヤアッパカバー21と燃料電池スタック3の後側を覆うリヤカバー22とからなる。
そして、前記燃料電池スタック3の前部と後部の縦壁3a、3bを、図6に示す如く、例えば前記排気ダクト5の下流部によって覆っている。
これにより、前記排気ダクト5のフロントカバー20の下流部に位置するフロント側の通路24と排気ダクト5のリヤカバー22の下流部に位置するリヤ側の通路25とを、車両前後方向の衝撃力が作用した場合に変形し易い向きに向け、車両前後方向から作用する衝撃力の吸収性を高めることができる。
つまり、図1に示す如く、前記燃料電池車両1のリヤシート27と前記リヤバンパ15及びこのリヤバンパ15の上部に位置するバックドア28との間の前記リヤフロア10上に、前記燃料電池スタック3の発電を停止していても走行できるように、充電可能な前記二次電池26を配置するものである。
前記二次電池26は前記燃料電池ユニット6や前記ガスタンク7と比べて剛性が高く潰れにくい構造である。
このため、前記二次電池26を前記燃料電池ユニット6の上方に配置し、車両の後部に前向きの衝撃力が作用して二次電池26が車両前方へ移動したとしても、二次電池26が燃料電池ユニット6や前記ガスタンク7に衝突しない構造としている。
これにより、このガスタンク7や前記燃料電池ユニット6を前記二次電池26との衝突から保護できる。
このとき、前記燃料電池スタック3は、空気排出面30を上側に向けて前記燃料電池車両1のリヤフロア10下に配置され、空気排出面30側に空気を吸い出すファン31が複数個配置されている。
そして、前記燃料電池スタック3を、この燃料電池スタック3の前後両側と左右両側を囲む枠状の前記フレーム16に固定し、このフレーム16の外側部に前記吸気ダクト4と前記排気ダクト5とを取り付けている。
このとき、吸気ダクト4の通路(図示せず)を前記空気取入面29と燃料電池スタック3の左右両端部の縦壁(図示せず)に沿わせるとともに、前記通路の左右両端部と中央部に夫々、空気取入口23を上向きに開口させている。
また、前記排気ダクト5については、フロント側の通路24及びリヤ側の通路25を、空気排出面30と燃料電池スタック3の前部と後部の縦壁3a、3bに沿わせるとともに、これらの通路24、通路25の前後両端部に一対の空気排出口32、33を夫々開口させている。
このとき、フロント側の空気排出口32は、図6のハッチング付矢印で示す如く、前記吸気ダクト4の前方を上方から下方に流れる空気を吸気ダクト4の下面に沿って車両後方へ排出している。
また、リヤ側の空気排出口33は、図6のハッチング付矢印で示す如く、吸気ダクト4の後方を上方から下方に流れる空気を車両後方へ排出している。
なお、本発明の実施例においては、前記排気ダクト5の下流部によって前記燃料電池スタック3の前部と後部の縦壁3a、3bを覆ったが、前記吸気ダクト4と排気ダクト5との構造を入れ替え、吸気ダクト4の上流部によって燃料電池スタック3の前部と後部の縦壁を覆う構成としてもよい。
2 燃料電池システム
3 燃料電池スタック
3a、3b 縦壁
4 吸気ダクト
5 排気ダクト
6 燃料電池ユニット
7 ガスタンク
8 フロントフロア
9 縦壁部
10 リヤフロア
11 空間
12、13 左右の後輪
14 アクスルビーム
15 リヤバンパ
16 フレーム
17 フロント排気ダクト
18 リヤ排気ダクト
19 フロントアッパカバー
20 フロントカバー
21 リヤアッパカバー
22 リヤカバー
23 空気取入口
24、25 通路
26 二次電池(「バッテリ」ともいう。)
27 リヤシート
28 バックドア
29 空気取入面
30 空気排出面
31 ファン
32、33 空気排出口
Claims (3)
- 燃料電池システムは燃料電池スタックと吸気ダクトと排気ダクトとを一体化した燃料電池ユニットと燃料ガスを貯蔵するガスタンクとを備え、フロントフロアに縦壁部を介して連結されるリヤフロアの下方であり、かつ、前記縦壁部と隣接する空間に前記ガスタンクを配置し、このガスタンクの後方に前記燃料電池ユニットを配置した燃料電池車両において、車両幅方向に延びるとともに左右の後輪間を連絡するアクスルビームを前記ガスタンク後方に配置し、前記燃料電池ユニットを前記アクスルビームとリヤバンパとの間に配置し、前記吸気ダクトの上流部、または、前記排気ダクトの下流部のうち少なくとも一方によって前記燃料電池スタックの前部と後部の縦壁を覆ったことを特徴とする燃料電池車両。
- 前記吸気ダクトの上流部、または、前記排気ダクトの下流部の少なくとも一方のうち前記燃料電池スタックの前部と後部の縦壁を覆うものは、その通路が車両上下方向に延びることを特徴とする請求項1に記載の燃料電池車両。
- 前記燃料電池ユニットの上方に充電可能な二次電池を配置したことを特徴とする請求項1に記載の燃料電池車両。
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US14/112,192 US8960344B2 (en) | 2011-05-02 | 2012-04-16 | Fuel cell vehicle |
CN201280009527.XA CN103384610B (zh) | 2011-05-02 | 2012-04-16 | 燃料电池车辆 |
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GB201318010D0 (en) | 2013-11-27 |
GB2503614A (en) | 2014-01-01 |
DE112012001955T5 (de) | 2014-01-30 |
CN103384610A (zh) | 2013-11-06 |
JP2012232673A (ja) | 2012-11-29 |
GB2503614B (en) | 2018-02-21 |
JP5652719B2 (ja) | 2015-01-14 |
US8960344B2 (en) | 2015-02-24 |
CN103384610B (zh) | 2016-04-27 |
US20140224562A1 (en) | 2014-08-14 |
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