WO2017017762A1 - 車両 - Google Patents

車両 Download PDF

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Publication number
WO2017017762A1
WO2017017762A1 PCT/JP2015/071242 JP2015071242W WO2017017762A1 WO 2017017762 A1 WO2017017762 A1 WO 2017017762A1 JP 2015071242 W JP2015071242 W JP 2015071242W WO 2017017762 A1 WO2017017762 A1 WO 2017017762A1
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WO
WIPO (PCT)
Prior art keywords
weight part
vehicle
battery
height
passenger compartment
Prior art date
Application number
PCT/JP2015/071242
Other languages
English (en)
French (fr)
Inventor
卓 ▲高▼柳
浩義 鈴木
正典 林
直樹 柱山
勇一郎 実吉
荻野 純一
Original Assignee
本田技研工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 本田技研工業株式会社 filed Critical 本田技研工業株式会社
Priority to PCT/JP2015/071242 priority Critical patent/WO2017017762A1/ja
Priority to JP2017530499A priority patent/JP6442609B2/ja
Priority to CN201580081764.0A priority patent/CN107848386B/zh
Priority to US15/747,908 priority patent/US10486514B2/en
Publication of WO2017017762A1 publication Critical patent/WO2017017762A1/ja

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    • B60K1/00Arrangement or mounting of electrical propulsion units
    • B60K1/04Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
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    • H01M2250/20Fuel cells in motive systems, e.g. vehicle, ship, plane
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/62Hybrid vehicles
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/64Electric machine technologies in electromobility
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40Application of hydrogen technology to transportation, e.g. using fuel cells
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S903/00Hybrid electric vehicles, HEVS
    • Y10S903/902Prime movers comprising electrical and internal combustion motors
    • Y10S903/903Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/904Component specially adapted for hev
    • Y10S903/907Electricity storage, e.g. battery, capacitor
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S903/00Hybrid electric vehicles, HEVS
    • Y10S903/902Prime movers comprising electrical and internal combustion motors
    • Y10S903/903Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/951Assembly or relative location of components

Definitions

  • the present invention relates to vehicles such as fuel cell vehicles, hybrid vehicles, and electric vehicles.
  • a battery is disposed below the passenger compartment, and an electric motor, an inverter, and a charger are disposed in a front room provided in front of the passenger compartment.
  • a fuel cell and one of the two hydrogen tanks are arranged under the passenger compartment, an electric motor is arranged in a front room provided in front of the passenger compartment, and provided behind the seat.
  • One of the two hydrogen tanks is disposed below the loaded luggage room, and a capacitor is disposed in the luggage room.
  • Patent Document 1 has an advantage that a large luggage room can be secured because heavy objects such as an electric motor and a battery are not disposed below the luggage room.
  • a heavy load consisting of an electric motor, an inverter, and a charger is placed in the front room in front of the battery under the passenger compartment, which is a heavy load, so the vehicle's weight balance is poor and the vehicle's agility is improved. There was room for.
  • the present invention has been made in view of the above-described problems, and an object of the present invention is to provide a vehicle capable of securing a luggage room space while maintaining a weight balance of the vehicle.
  • the first aspect is A cabin provided with a seat (for example, a cabin IN in an embodiment described later); A front room (for example, a front room FR in an embodiment described later) provided as a separate space from the passenger compartment in front of the passenger compartment, A luggage room (for example, a luggage room LR in an embodiment described later) provided as the same space as the vehicle compartment or a separate space behind the vehicle compartment, A weight part (for example, a first weight part W1 in an embodiment described later, for example) including at least one of a drive unit that drives a wheel (for example, a front wheel FW in an embodiment described later) and a power source that supplies fuel or electric power to the drive unit.
  • a seat for example, a cabin IN in an embodiment described later
  • a front room for example, a front room FR in an embodiment described later
  • a luggage room for example, a luggage room LR in an embodiment described later
  • a weight part for example, a first weight part W1 in an embodiment described later, for example
  • a drive unit that drives
  • the weight part includes a first weight part (for example, a first weight part W1 in an embodiment described later) and a second weight part (for example, a second weight part W2 in an embodiment described later),
  • the first weight part and the second weight part are vehicles (for example, a vehicle V in an embodiment described later), at least one of which includes the drive unit,
  • the battery is provided under the passenger compartment,
  • the first weight part is provided in the front room,
  • the second weight part is provided under the luggage room,
  • the height of the second weight part (for example, height H2 in the embodiment described later) is lower than the height of the first weight part (for example, height H1 in the embodiment described later).
  • the second aspect is the vehicle of the first aspect
  • the first weight part includes an electric motor (for example, a motor MOT in an embodiment described later), an energization control device (for example, an inverter IVT in an embodiment described later), and a fuel cell (for example, an embodiment described later).
  • a fuel cell FC The second weight part includes a hydrogen tank (for example, a second hydrogen tank HT2 in an embodiment described later), It is a fuel cell vehicle.
  • the third aspect is the vehicle according to the first aspect
  • the first weight part includes an engine (for example, an engine ENG in an embodiment described later), an electric motor (for example, a motor MOT in an embodiment described later), a generator (for example, a generator GEN in an embodiment described later), the electric motor,
  • An energization control device for example, an inverter IVT in an embodiment described later
  • the second weight part includes a fuel tank (for example, a fuel tank FT in an embodiment described later), It is a hybrid car.
  • the fourth aspect is the vehicle of the third aspect,
  • the second weight part further includes a charger (for example, a charger CHG in an embodiment described later).
  • the fifth aspect is the vehicle according to the first aspect,
  • the first weight part includes an electric motor (for example, a motor MOT in an embodiment described later), an energization control device (for example, in an embodiment described later) for performing energization control of the electric motor, and a charger (for example, an inverter in the embodiment described later).
  • IVT inverter in the embodiment described later
  • the second weight part includes another battery (for example, a battery module 35 in an embodiment described later), It is an electric car.
  • the sixth aspect is the vehicle of the first aspect to the fifth aspect,
  • the battery constitutes a battery unit (for example, a battery unit 10 in an embodiment described later) including a plurality of battery modules (for example, battery modules 31 to 33 in an embodiment described later),
  • the battery module is disposed under the front seat (for example, the front seat 4 in the embodiment described later) and under the rear seat (for example, the rear seat 5 in the embodiment described later), and is not disposed at the foot of the passenger in the rear seat. .
  • the seventh aspect is the vehicle of the first aspect to the sixth aspect,
  • the second weight part is fixed to a frame member (for example, a subframe 23 in an embodiment described later),
  • the frame member is fixed to a pair of left and right vehicle skeleton members (for example, a floor frame 12 in an embodiment described later) extending in the front-rear direction.
  • the eighth aspect is the vehicle of the first aspect to the seventh aspect,
  • the height of the battery (for example, the height H3 in the embodiment described later) is the highest under the rear seat and is lower than the height of the second weight part.
  • the ninth aspect is the vehicle of the second aspect,
  • the battery provided under the passenger compartment is disposed under a front seat (for example, a front seat 4 in an embodiment described later), Under the rear seat, another hydrogen tank (for example, a first hydrogen tank HT1 in an embodiment described later) is provided,
  • the height of the other hydrogen tank (for example, height H4 in the embodiment described later) is lower than the height of the second weight part.
  • the first weight part which is one of the two weight parts, is disposed in the front room in front of the passenger compartment and the second weight part, which is the other, with respect to the battery disposed below the passenger compartment Is placed under the luggage room behind the passenger compartment, so that the weight balance of the vehicle can be maintained and the agility of the vehicle can be secured.
  • the height of the second weight part arranged under the luggage room is lower than the height of the first weight part arranged in the front room, so that the height of the floor surface of the luggage room can be suppressed. Space can be secured.
  • the battery below the passenger compartment and disposing the second heavy object below the luggage room the height of the center of gravity of the vehicle can be lowered, and the driving performance of the vehicle can be improved.
  • the second to fifth aspects it is possible to improve the agility and driving performance of the vehicle while ensuring the luggage room space, regardless of whether the vehicle is a fuel cell vehicle, a hybrid vehicle, or an electric vehicle.
  • the battery module since the battery module is not disposed at the foot of the passenger in the rear seat, the influence on the passenger compartment can be suppressed and the comfort of the passenger can be improved. In addition, this makes it possible to reduce the vehicle height.
  • the second weight part is fixed to the frame member fixed to the pair of left and right vehicle skeleton members, a common frame member can be used regardless of the type of the second weight part. Platform can be shared.
  • the rear seat is arranged at a position higher than the front seat, and accordingly the height of the battery is made the highest under the rear seat, so that the floor surface is lowered. Can be set. Furthermore, the comfort of the passenger
  • the rear seat is usually arranged at a higher position than the front seat, and the floor surface can be set low by arranging another hydrogen tank accordingly. Furthermore, the comfort of the passenger in the rear seat can be improved.
  • FIG. 1 is a schematic view of a hybrid vehicle according to a first embodiment of a vehicle of the present invention.
  • FIG. 2 is an exploded perspective view of a battery unit provided below a passenger compartment in the hybrid vehicle of FIG. 1.
  • FIG. 2 is a perspective view of a first weight portion provided in a front room in the hybrid vehicle of FIG. 1. It is a block diagram of the 1st weight part of Drawing 3.
  • FIG. 2 is a schematic diagram showing a first weight part, a battery, and a second weight part mounted on the vehicle body frame in the hybrid vehicle of FIG. 1.
  • It is the schematic of the electric vehicle which concerns on 2nd embodiment of the vehicle of this invention.
  • It is the schematic of the fuel cell vehicle which concerns on 3rd embodiment of the vehicle of this invention.
  • the vehicle V includes a vehicle compartment IN provided with a front seat 4 and a rear seat 5, and a vehicle compartment IN that is in front of the vehicle compartment IN.
  • the hybrid vehicle includes a front room FR provided as a space, and a luggage room LR provided behind the vehicle compartment IN as the same space as the vehicle compartment IN.
  • the luggage room LR may be provided as a separate space from the passenger compartment IN, or a part thereof may be communicated.
  • the vehicle body frame 11 includes a pair of left and right floor frames 12 and 12 extending in the longitudinal direction of the vehicle body, and a pair of left and right front side frames 13 extending forward while bending upward from the front ends of the floor frames 12 and 12. , 13, a pair of left and right rear side frames 14, 14 extending rearward while bending upward from the rear ends of the floor frames 12, 12, and a pair of left and right side frames disposed outside the floor frames 12, 12 in the vehicle width direction 15 and 15, a pair of left and right front outriggers 16 and 16 that connect the front ends of the side frames 15 and 15 to the front ends of the floor frames 12 and 12, and the rear ends of the side frames 15 and 15 are the rear ends of the floor frames 12 and 12, respectively.
  • the space surrounded by the front side frames 13, 13, the front bumper beam 18, and the front cross member 19 corresponds to the front room FR
  • a space surrounded by the member 21 corresponds to the passenger compartment IN
  • a space surrounded by the rear side frames 14, 14, the rear cross member 21, and the rear bumper beam 22 corresponds to the luggage room LR.
  • the space surrounded by the side frames 15, 15, the front cross member 19, and the rear bumper beam 22 that divides the passenger compartment IN and the luggage room LR includes a floor surface of the passenger compartment IN and a floor surface of the luggage room LR.
  • a floor panel 3 is provided.
  • the battery unit 10 is disposed below the floor panel 3 that forms the floor surface of the passenger compartment IN, and the two weight portions are dispersedly arranged with the battery unit 10 interposed therebetween, so that the weight balance of the vehicle is improved. It is kept. Specifically, one first weight part W1 of the two weight parts is provided in the front room FR, and the other second weight part W2 is disposed under the luggage room LR.
  • the battery unit 10 disposed below the floor panel 3 forming the floor surface of the passenger compartment IN is mainly composed of a plurality of battery modules 31 to 33, a DC-DC converter 30, and a battery.
  • An ECU 40 and a battery case 50 for housing them are provided.
  • the battery case 50 includes a plurality of battery modules 31 to 33, a DC-DC converter 30, a bottom plate 51 on which the battery ECU 40 is mounted, and a cover 52 that covers these from above.
  • the battery case 50 is configured such that a plurality of brackets 53 that form a part of the bottom plate 51 and extend to the left and right are fastened to floor frames 12 and 12 disposed on both sides of the vehicle V, whereby the battery unit 10 is It is attached so that it may be suspended below 3.
  • the plurality of battery modules 31 to 33 include a front battery module 31 housed in the front part of the battery case 50 and two rear battery modules 32 and 33 housed in the rear part of the battery case 50 across the space 34.
  • Each of the battery modules 31 to 33 includes a plurality of high voltage batteries 31a to 33a.
  • the front battery module 31 is configured by a total of six high voltage batteries 31a arranged in two in the left-right direction and three in the front-rear direction.
  • the front battery module 31 is arranged in a total of two in the left-right direction and three in the front-rear direction.
  • the six high voltage batteries 32a constitute one rear battery module 32 (hereinafter also referred to as the lower rear battery module 32), and the other rear battery module 33 (hereinafter referred to as the upper rear part) is constituted by two high voltage batteries 33a arranged in the left-right direction. Also referred to as battery module 33).
  • the plurality of battery modules 31 to 33 are disposed below the front seat 4 and the rear seat 5 of the vehicle V (see FIG. 1). Specifically, the front battery module 31 is disposed below the front seat 4, and the lower rear battery module 32 and the upper rear battery module 33 are disposed below the rear seat 5.
  • the front battery module 31 When the front battery module 31 is disposed below the front seat 4, the front battery module 31 is placed flat without overlapping.
  • the lower rear battery module 32 and the upper rear battery module 33 are vertically arranged in front of the seat surface of the rear seat 5 when arranged below the rear seat 5.
  • the two high voltage batteries 33a constituting the upper rear battery module 33 are arranged above the two high voltage batteries 32a arranged in the foremost side.
  • the space 34 is located at the foot of the occupant of the rear seat 5, and the battery modules 31 to 33 are not arranged at the foot of the occupant of the rear seat 5, thereby suppressing the influence on the passenger compartment and improving the comfort of the occupant. Can do. In addition, this makes it possible to reduce the vehicle height.
  • the DC-DC converter 30 is a high-voltage system device that transforms a direct current, and is disposed in the space 34 between the front battery module 31 and the rear battery modules 32 and 33 and in the center in the width direction of the battery unit 10. .
  • the battery ECU 40 is a battery controller that manages charging / discharging and temperature of the high-voltage batteries 31a to 33a, and is disposed behind the upper rear battery module 33 and above the lower rear battery module 32.
  • the first weight part W1 provided in the front room FR includes an engine ENG, a generator GEN and a motor MOT, and an inverter IVT that controls the generator GEN and the motor MOT.
  • the generator GEN and the motor MOT are accommodated in the drive device case 60 and disposed adjacent to the engine ENG, and the inverter IVT is disposed on the drive device case 60.
  • a transmission TM is further provided in the drive unit case 60.
  • the transmission TM transmits the driving force of the motor MOT to the front wheels FW and FW to drive the vehicle and the driving force of the engine ENG.
  • the two transmission paths are alternatively selected or used in combination.
  • the inverter IVT is connected between the plurality of battery modules 31 to 33, the generator GEN, and the motor MOT, and converts a DC voltage into an AC voltage or an AC voltage into a DC voltage.
  • the inverter-side generator connector and the inverter-side motor connector are provided on the bottom surface of the inverter IVT, and the inverter-side generator connector and the inverter-side motor connector are provided on the upper surface of the drive device case 60.
  • the second weight part W2 provided in the luggage room LR charges the plurality of battery modules 31 to 33 by the fuel tank FT that supplies fuel such as gasoline and natural gas to the engine ENG and the electric power supplied from the external power source. And the fuel tank FT and the charger CHG are held by the subframe 23 so as to be adjacent to each other in the vehicle width direction.
  • the sub-frame 23 includes a pair of front and rear sub-cross frames 24 and 24 extending in the left-right direction and a pair of left and right sub-side frames 25 and 25 extending in the front-rear direction, which are connected in a substantially rectangular shape, and have a fuel tank FT and a charger CHG inside. And the rear side frames 14 and 14 are fastened.
  • the relative positional relationship between the first weight part W1 and the second weight part W2 will be described.
  • the first weight part W1 and the second weight part W2 are arranged before and after the battery unit 10, and the ground GND is used as a reference.
  • the height H2 of the second weight part W2 is lower than the height H1 of the first weight part W1. That is, in the present embodiment, the height H2 of the uppermost surfaces of the fuel tank FT and the charger CHG constituting the second weight part W2 constitutes the engine ENG, generator GEN, motor MOT, which constitutes the first weight part W1. And the height H1 of the top surface of the inverter IVT is lower. Thereby, the height of the floor surface of the luggage room LR can be kept low, and the space of the luggage room LR can be secured.
  • the height H3 of the battery unit 10 is the highest under the rear seat 5, and is lower than the height H2 of the second weight portion W2.
  • the rear seat 5 is arranged at a position higher than the front seat 4, and the floor surface can be set low by making the height of the battery unit 10 the highest under the rear seat 5.
  • the height H3 of the battery unit 10 lower than the height of the second weight part W2, it is possible to secure a space above the occupant of the rear seat 5 and improve comfort.
  • the height of the center of gravity of the vehicle V can be lowered, and the driving performance of the vehicle V is improved. Can be made.
  • the vehicle V of 2nd Embodiment of this invention is demonstrated.
  • the vehicle V of the second embodiment differs from the first embodiment only in the elements constituting the first weight part W1 and the second weight part W2, and the same configuration is denoted by the same reference numeral. Is omitted.
  • a vehicle V according to the second embodiment of the present invention is an electric vehicle, in which a battery unit 10 is disposed below a floor panel 3 that forms a floor surface of a passenger compartment IN, and two weight parts are sandwiched between the battery units 10. The weight balance of the vehicle is maintained by being distributed.
  • the first weight part W1 of one of the two weight parts is provided in the front room FR, and the other second weight part W2 is the same as that of the first embodiment in that it is disposed under the luggage room LR. .
  • the first weight portion W1 provided in the front room FR includes a motor MOT, an inverter IVT that controls the motor MOT, a charger CHG that charges the plurality of battery modules 31 to 33 with electric power supplied from an external power source, Is provided.
  • the second weight portion W2 provided in the luggage room LR includes a battery module 35 different from the plurality of battery modules 31 to 33 accommodated in the battery unit 10, and the battery module 35 is fastened to the rear side frames 14 and 14. Held in the subframe 23.
  • the relative positional relationship between the first weight part W1 and the second weight part W2 will be described.
  • the first weight part W1 and the second weight part W2 are arranged before and after the battery unit 10, and the ground GND is used as a reference.
  • the height H2 of the second weight part W2 is lower than the height H1 of the first weight part W1. That is, in this embodiment, the height H2 of the uppermost surface of the battery module 35 constituting the second weight part W2 is the highest of the motor MOT, the inverter IVT, and the charger CHG constituting the first weight part W1. The height is lower than the height H1 of the upper surface.
  • the height of the floor surface of the luggage room LR can be restrained low similarly to the hybrid vehicle of 1st Embodiment, and the space of the luggage room LR can be ensured. Further, the height of the center of gravity of the vehicle V can be reduced, and the driving performance of the vehicle V can be improved.
  • the height H3 of the battery unit 10 is the highest under the rear seat 5, and is lower than the height H2 of the second weight portion W2.
  • the vehicle V of the third embodiment is the same as that of the first and second embodiments, except for the configuration under the passenger compartment IN and the elements constituting the first weight part W1 and the second weight part W2.
  • the same reference numerals are assigned to the configurations of and the description is omitted.
  • a vehicle V according to the third embodiment of the present invention is a fuel cell vehicle, and includes a fuel cell FC that generates power by an electrochemical reaction between hydrogen and oxygen, and two first and second hydrogen tanks HT1 that store pressurized hydrogen. , HT2, and a battery unit 10A smaller than the battery unit 10 of the first and second embodiments and a first hydrogen tank HT1 are disposed below the floor panel 3 forming the floor surface of the vehicle interior IN, and the battery The weight balance of the vehicle is maintained by disposing the two weight parts in a distributed manner across the unit 10A and the first hydrogen tank HT1.
  • One of the two weight parts, the first weight part W1 is provided in the front room FR, and the other second weight part W2 is arranged below the luggage room LR is the same as in the first and second embodiments. The same.
  • the battery unit 10A is disposed below the front seat 4, the first hydrogen tank HT1 is disposed below the rear seat 5, and the battery unit 10A and the first hydrogen tank HT1 are not disposed at the feet of the occupants of the rear seat 5. Thus, it is possible to suppress the influence on the passenger compartment and improve passenger comfort.
  • the first hydrogen tank HT1 is smaller than a second hydrogen tank HT2 described later, and the height of the rear seat 5 is kept low. These configurations make it possible to reduce the vehicle height.
  • the first weight part W1 provided in the front room FR includes a motor MOT, an inverter IVT that controls the motor MOT, and a fuel cell FC.
  • the second weight portion W2 provided in the luggage room LR includes a second hydrogen tank HT2, and the second hydrogen tank HT2 is held by a subframe 23 fastened to the rear side frames 14 and 14.
  • the relative positional relationship between the first weight part W1 and the second weight part W2 will be described.
  • the first weight part W1 and the second weight part W2 are arranged before and after the battery unit 10A and the first hydrogen tank HT1, respectively.
  • the height H2 of the second weight part W2 is lower than the height H1 of the first weight part W1. That is, in this embodiment, the height H2 of the uppermost surface of the second hydrogen tank HT2 constituting the second weight part W2 of the motor MOT, the inverter IVT, and the fuel cell FC constituting the first weight part W1. It is lower than the height H1 of the top surface.
  • the fuel cell vehicle of the third embodiment similarly to the hybrid vehicle of the first embodiment and the electric vehicle of the second embodiment, the height of the floor surface of the luggage room LR can be kept low. Space for the room LR can be secured.
  • the height H3 of the battery unit 10A is higher than the height H4 of the first hydrogen tank HT1.
  • the low and relatively low battery unit 10 ⁇ / b> A is disposed below the front seat 4, and the relatively high first hydrogen tank HT ⁇ b> 1 is disposed below the rear seat 5.
  • the rear seat 5 is arranged at a position higher than the front seat 4, and the first hydrogen tank HT1 having a relatively high height is arranged under the rear seat 5 in accordance therewith, so that the floor surface is changed. Can be set low.
  • the height H4 of the first hydrogen tank HT1 is lower than the height of the second weight part W2.
  • the charger CHG is disposed in the second weight part W2 together with the fuel tank FT.
  • the charger CHG is not necessarily required and may be configured such that external charging is not possible.
  • the battery may not be unitized such as the DC-DC converter 30 and the battery ECU 40.
  • a secondary battery such as a lithium ion battery or a nickel metal hydride battery can be used.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Fuel Cell (AREA)

Abstract

車両(V)は、車室(IN)と、フロントルーム(FR)と、ラゲッジルーム(LR)と、前輪(FW)を駆動する駆動部と該駆動部に燃料又は電力を供給する動力源との少なくとも一方を含む重量部と、該駆動部に電力を供給するバッテリユニット(10)と、を備える。重量部は、第1重量部(W1)と第2重量部(W2)とを有し、第1重量部(W1)と第2重量部(W2)とは、少なくとも一方が駆動部を含む。バッテリユニット(10)は車室下に設けられ、第1重量部(W1)はフロントルーム(FR)に設けられ、第2重量部(W2)はラゲッジルーム(LR)下に設けられる。第2重量部(W2)の高さ(H2)は、第1重量部(W1)の高さ(H1)よりも低い。

Description

車両
 本発明は、燃料電池車、ハイブリッド車、電気自動車等の車両に関する。
 従来より、車両のフロアパネルの下方にバッテリを搭載した車両が知られている。例えば、特許文献1に記載の車両では、車室下にバッテリを配置し、車室の前方に設けられたフロントルームに電動機、インバータ、及び充電器を配置している。
 また、特許文献2に記載の車両では、車室下に燃料電池と2つのうち一方の水素タンクを配置し、車室の前方に設けられたフロントルームに電動機を配置し、座席の後方に設けられたラゲッジルームの下方に2つのうち他方の水素タンクを配置し、ラゲッジルーム内にキャパシタを配置している。
日本国特許第5104997号公報 日本国特開2006-151130号公報
 特許文献1に記載の車両では、ラゲッジルームの下方に電動機、バッテリ等の重量物が配置されていないため、ラゲッジルームを広く確保することができる利点がある。しかしながら、重量物である車室下のバッテリに対し前方のフロントルームには、電動機、インバータ、及び充電器からなる重量物が配置されているため、車両の重量バランスが悪く車両の俊敏性に改善の余地があった。
 一方、特許文献2に記載の車両では、重量物である車室下の燃料電池等に対し前方のフロントルームには電動機、ラゲッジルームの上下にキャパシタと水素タンクと重量物が分散して配置されているため、車両の重量バランスが良い。しかしながら、キャパシタがラゲッジルーム内に配置されているため、ラゲッジルームが狭くなっている。
 本発明は、前述した課題に鑑みてなされたものであり、その目的は、車両の重量バランスを保ちながら、ラゲッジルームのスペースを確保できる車両を提供することにある。
 上記目的を達成するために、本発明は以下の態様を提供するものである。
 第1態様は、
 座席が設けられた車室(例えば後述の実施形態における車室IN)と、
 該車室より前方に、該車室とは別空間として設けられたフロントルーム(例えば後述の実施形態におけるフロントルームFR)と、
 該車室より後方に、該車室と同一空間若しくは別空間として設けられたラゲッジルーム(例えば後述の実施形態におけるラゲッジルームLR)と、
 車輪(例えば後述の実施形態における前輪FW)を駆動する駆動部と該駆動部に燃料又は電力を供給する動力源との少なくとも一方を含む重量部(例えば後述の実施形態における第1重量部W1、第2重量部W2)と、
 前記駆動部に電力を供給するバッテリ(例えば後述の実施形態におけるバッテリユニット10)と、を備え、
 前記重量部は、第1重量部(例えば後述の実施形態における第1重量部W1)と第2重量部(例えば後述の実施形態における第2重量部W2)とを有し、
 該第1重量部と該第2重量部とは、少なくとも一方が前記駆動部を含む、車両(例えば後述の実施形態における車両V)であって、
 前記バッテリは、前記車室下に設けられ、
 前記第1重量部は、前記フロントルームに設けられ、
 前記第2重量部は、前記ラゲッジルーム下に設けられ、
 前記第2重量部の高さ(例えば後述の実施形態における高さH2)は、前記第1重量部の高さ(例えば後述の実施形態における高さH1)よりも低い。
 第2態様は、第1態様の車両であって、
 前記第1重量部は、電動機(例えば後述の実施形態におけるモータMOT)と、該電動機の通電制御を行う通電制御装置(例えば後述の実施形態におけるインバータIVT)と、燃料電池(例えば後述の実施形態における燃料電池FC)と、を含み、
 前記第2重量部は、水素タンク(例えば後述の実施形態における第2水素タンクHT2)を含み、
 燃料電池車である。
 第3態様は、第1態様の車両であって、
 前記第1重量部は、エンジン(例えば後述の実施形態におけるエンジンENG)と、電動機(例えば後述の実施形態におけるモータMOT)と、発電機(例えば後述の実施形態におけるジェネレータGEN)と、該電動機及び該発電機の通電制御を行う通電制御装置(例えば後述の実施形態におけるインバータIVT)と、を含み、
 前記第2重量部は、燃料タンク(例えば後述の実施形態における燃料タンクFT)を含み、
 ハイブリッド車である。
 第4態様は、第3態様の車両であって、
 前記第2重量部は、さらに充電器(例えば後述の実施形態における充電器CHG)を含む。
 第5態様は、第1態様の車両であって、
 前記第1重量部は、電動機(例えば後述の実施形態におけるモータMOT)と、該電動機の通電制御を行う通電制御装置(例えば後述の実施形態における)と、充電器(例えば後述の実施形態におけるインバータIVT)と、を含み、
 前記第2重量部は、他のバッテリ(例えば後述の実施形態におけるバッテリモジュール35)を含み、
 電気自動車である。
 第6態様は、第1態様~第5態様の車両であって、
 前記バッテリは、複数のバッテリモジュール(例えば後述の実施形態におけるバッテリモジュール31~33)から構成されるバッテリユニット(例えば後述の実施形態におけるバッテリユニット10)をなし、
 前記バッテリモジュールは、前部座席(例えば後述の実施形態における前部座席4)下及び後部座席(例えば後述の実施形態における後部座席5)下に配置され、後部座席の乗員の足元には配置されない。
 第7態様は、第1態様~第6態様の車両であって、
 前記第2重量部は、フレーム部材(例えば後述の実施形態におけるサブフレーム23)に固定され、
 前記フレーム部材は、前後方向に延びる左右一対の車両骨格部材(例えば後述の実施形態におけるフロアフレーム12)に固定される。
 第8態様は、第1態様~第7態様の車両であって、
 前記バッテリの高さ(例えば後述の実施形態における高さH3)は、後部座席の下で最も高く、且つ、前記第2重量部の高さよりも低い。
 第9態様は、第2態様の車両であって、
 前記車室下に設けられる前記バッテリは、前部座席(例えば後述の実施形態における前部座席4)下に配置され、
 後部座席下には、他の水素タンク(例えば後述の実施形態における第1水素タンクHT1)が設けられ、
 前記他の水素タンクの高さ(例えば後述の実施形態における高さH4)は、前記第2重量部の高さよりも低い。
 第1態様によれば、車室下に配置されるバッテリに対し、2つの重量部の一方である第1重量部を車室より前方にあるフロントルームに配置し、他方である第2重量部を車室より後方にあるラゲッジルーム下に配置することにより、車両の重量バランスを保つことができ、車両の俊敏性を確保できる。
 また、ラゲッジルーム下に配置される第2重量部の高さは、フロントルームに配置される第1重量部の高さより低いので、ラゲッジルームの床面の高さを抑えることができ、ラゲッジルームのスペースを確保できる。
 さらに、バッテリを車室下に配置するとともに第2重量物をラゲッジルーム下に配置することで、車両の重心高さを低くすることができ、車両の運転性能を向上させることができる。
 第2~5態様によれば、燃料電池車、ハイブリッド車、電気自動車のいずれの車両であっても、ラゲッジルームのスペースを確保しつつ、車両の俊敏性及び運転性能を向上させることができる。
 第6態様によれば、後部座席の乗員の足元にはバッテリモジュールが配置されないので、車室への影響を抑え、乗員の快適性を向上させることができる。また、これにより車高を低くすることができる。
 第7態様によれば、第2重量部が左右一対の車両骨格部材に固定されるフレーム部材に固定されるので、第2重量部の種類によらず共通のフレーム部材を用いることができ、車両のプラットフォームを共通化することができる。
 第8態様によれば、通常、後部座席は前部座席よりも高い位置に配置されるところ、それに合わせてバッテリの高さを後部座席下で最も高くなるようにすることで、床面を低く設定できる。さらに、バッテリの高さを第2重量部の高さよりも低くすることで、後部座席の乗員の快適性を向上させることができる。
 第9態様によれば、通常、後部座席は前部座席よりも高い位置に配置されるところ、それに合わせて他の水素タンクを配置することで、床面を低く設定できる。さらに、後部座席の乗員の快適性を向上させることができる。
本発明の車両の第一実施形態に係るハイブリッド車の概略図である。 図1のハイブリッド車において、車室下に設けられたバッテリユニットの分解斜視図である。 図1のハイブリッド車において、フロントルームに設けられた第1重量部の斜視図である。 図3の第1重量部のブロック図である。 図1のハイブリッド車において、車体フレームに搭載される、第1重量部、バッテリ、及び第2重量部を示す模式図である。 本発明の車両の第二実施形態に係る電気自動車の概略図である。 本発明の車両の第三実施形態に係る燃料電池車の概略図である。
 以下、本発明の各実施形態に係る車両について、添付図面に基づいて説明する。
<第1実施形態>
 本発明の第1実施形態の車両Vは、図1に示すように、前部座席4及び後部座席5が設けられた車室INと、該車室INより前方に該車室INとは別空間として設けられたフロントルームFRと、該車室INより後方に、該車室INと同一空間として設けられたラゲッジルームLRと、を備えたハイブリッド車である。なお、ラゲッジルームLRは、車室INとは別空間として設けられていてもよく、一部が連通していてもよい。
 車体フレーム11は、図5に示すように、車体前後方向に延びる左右一対のフロアフレーム12,12と、フロアフレーム12,12の前端から上方に屈曲しながら前方に延びる左右一対のフロントサイドフレーム13,13と、フロアフレーム12,12の後端から上方に屈曲しながら後方に延びる左右一対のリヤサイドフレーム14,14と、フロアフレーム12,12の車幅方向外側に配置された左右一対のサイドフレーム15,15と、サイドフレーム15,15の前端をフロアフレーム12,12の前端に接続する左右一対のフロントアウトリガー16,16と、サイドフレーム15,15の後端をフロアフレーム12,12の後端に接続する左右一対のリヤアウトリガー17,17と、左右一対のフロントサイドフレーム13,13の前端部間を車幅方向に接続するフロントバンパービーム18と、左右一対のフロアフレーム12,12の前端部間を車幅方向に接続するフロントクロスメンバ19と、左右一対のリヤサイドフレーム14,14の前後方向中間部間を車幅方向に接続するリヤクロスメンバ21と、左右一対のリヤサイドフレーム14,14の後端部間を車幅方向に接続するリヤバンパービーム22と、を備える。
 平面視で、フロントサイドフレーム13,13と、フロントバンパービーム18と、フロントクロスメンバ19とにより囲まれた空間がフロントルームFRに対応し、サイドフレーム15,15と、フロントクロスメンバ19と、リヤクロスメンバ21とに囲まれた空間が車室INに対応し、リヤサイドフレーム14,14と、リヤクロスメンバ21と、リヤバンパービーム22とにより囲まれた空間がラゲッジルームLRに対応している。車室IN及びラゲッジルームLRを区画する、サイドフレーム15,15と、フロントクロスメンバ19と、リヤバンパービーム22とにより囲まれた空間には、車室INの床面及びラゲッジルームLRの床面を形成するフロアパネル3が設けられている。
 車両Vには、車室INの床面を形成するフロアパネル3の下方にバッテリユニット10が配置され、バッテリユニット10を挟んで2つの重量部が分散配置されることで、車両の重量バランスが保たれている。具体的には、2つの重量部のうちの一方の第1重量部W1はフロントルームFRに設けられ、他方の第2重量部W2はラゲッジルームLR下に配置されている。
[バッテリユニット]
 図1及び図2に示すように、車室INの床面を形成するフロアパネル3の下方に配置されるバッテリユニット10は、主として複数のバッテリモジュール31~33、DC-DCコンバータ30、バッテリ用ECU40及びこれらを収容するバッテリケース50を備える。
 バッテリケース50は、複数のバッテリモジュール31~33、DC-DCコンバータ30、及びバッテリ用ECU40が搭載されるボトムプレート51と、これらを上方から覆うカバー52とから構成される。バッテリケース50は、ボトムプレート51の一部をなして左右に延びる複数のブラケット53が車両Vの両側方に配設されるフロアフレーム12,12に締結されることにより、バッテリユニット10がフロアパネル3の下方に吊り下げられるように取り付けられる。
 複数のバッテリモジュール31~33には、バッテリケース50の前部に収容される前部バッテリモジュール31と、空間部34を挟んでバッテリケース50の後部に収容される2つの後部バッテリモジュール32、33とが含まれ、各バッテリモジュール31~33は、それぞれ複数の高圧バッテリ31a~33aを有する。本実施形態では、左右方向に2つ、前後方向に3つ並べた合計6つの高圧バッテリ31aによって前部バッテリモジュール31が構成され、同様に左右方向に2つ、前後方向に3つ並べた合計6つの高圧バッテリ32aによって一方の後部バッテリモジュール32(以下、下後部バッテリモジュール32とも呼ぶ。)が構成され、左右方向に並べた2つの高圧バッテリ33aによって他方の後部バッテリモジュール33(以下、上後部バッテリモジュール33とも呼ぶ。)が構成される。
 複数のバッテリモジュール31~33は、車両Vの前部座席4及び後部座席5の下方に配置される(図1参照)。具体的には、前部座席4の下方に前部バッテリモジュール31が配置され、後部座席5の下方に下後部バッテリモジュール32及び上後部バッテリモジュール33が配置される。
 前部バッテリモジュール31は、前部座席4の下方に配置するにあたり、重ねることなく平置きされる。下後部バッテリモジュール32及び上後部バッテリモジュール33は、後部座席5の下方に配置するにあたり、後部座席5の座面前方に上下に配置される。具体的には、下後部バッテリモジュール32を構成する6つの高圧バッテリ32aのうち、最も前側に並ぶ2つの高圧バッテリ32aの上方に上後部バッテリモジュール33を構成する2つの高圧バッテリ33aが配置される。空間部34は後部座席5の乗員の足元に位置し、後部座席5の乗員の足元にバッテリモジュール31~33を配置しないことで、車室への影響を抑え、乗員の快適性を向上させることができる。また、これにより車高を低くすることができる。
 DC-DCコンバータ30は、直流電流を変圧する高圧系機器であり、前部バッテリモジュール31と後部バッテリモジュール32、33との間の空間部34、且つバッテリユニット10の幅方向中央に配置される。また、バッテリ用ECU40は、高圧バッテリ31a~33aの充放電や温度を管理するバッテリ用のコントローラであり、上後部バッテリモジュール33の後方、且つ下後部バッテリモジュール32の上方に配置される。
[第1重量部]
 フロントルームFRに設けられる第1重量部W1は、図3及び図4に示すように、エンジンENGと、ジェネレータGEN及びモータMOTと、ジェネレータGEN及びモータMOTを制御するインバータIVTと、を備える。ジェネレータGEN及びモータMOTは、駆動装置ケース60に収容されてエンジンENGに隣接して配置され、駆動装置ケース60上にインバータIVTが配置されている。
 駆動装置ケース60の内部には、さらに変速機TMが設けられ、変速機TMは、モータMOTの駆動力を前輪FW,FWに伝達して車両を走行させる伝達経路と、エンジンENGの駆動力を前輪FW,FWに伝達して車両を走行させる伝達経路とを備え、これら2つの伝達経路を択一的に選択又は併用して走行可能に構成されている。
 インバータIVTは、複数のバッテリモジュール31~33とジェネレータGEN及びモータMOTとの間に接続され、直流電圧を交流電圧に、或いは、交流電圧を直流電圧に変換する。インバータIVTの底面には、インバータ側ジェネレータコネクタ及びインバータ側モータコネクタが設けられており、これらのインバータ側ジェネレータコネクタ及びインバータ側モータコネクタを駆動装置ケース60の上面に設けられたケース側ジェネレータコネクタ及びケース側モータコネクタに電気的に接続することで、インバータIVTによるジェネレータGEN及びモータMOTの制御が可能になる。
[第2重量部]
 ラゲッジルームLRに設けられる第2重量部W2は、エンジンENGにガソリン、天然ガス等の燃料を供給する燃料タンクFTと、外部電源から供給される電力によって複数のバッテリモジュール31~33の充電を行う充電器CHGと、を備え、燃料タンクFTと充電器CHGとが車幅方向に隣り合うようにサブフレーム23に保持されている。
 サブフレーム23は、左右方向に延びる前後一対のサブクロスフレーム24,24と前後方向に延びる左右一対のサブサイドフレーム25,25とが略矩形状に接続され、内部に燃料タンクFTと充電器CHGとを収容した状態で、リヤサイドフレーム14,14に締結される。
[相対的位置関係]
 第1重量部W1と第2重量部W2の相対的位置関係を説明すると、第1重量部W1と第2重量部W2とがバッテリユニット10を挟んで前後に配置され、地面GNDを基準として、第2重量部W2の高さH2が第1重量部W1の高さH1よりも低くなっている。即ち、本実施形態において、第2重量部W2を構成する、燃料タンクFT及び充電器CHGの最上面の高さH2が、第1重量部W1を構成する、エンジンENG、ジェネレータGEN、モータMOT、及びインバータIVTの最上面の高さH1よりも低くなっている。これにより、ラゲッジルームLRの床面の高さを低く抑えることができ、ラゲッジルームLRのスペースを確保できる。
 また、バッテリユニット10の高さH3は、後部座席5の下で最も高く、且つ、第2重量部W2の高さH2よりも低くなっている。通常、後部座席5は前部座席4よりも高い位置に配置されるところ、バッテリユニット10の高さを後部座席5の下で最も高くなるようにすることで、床面を低く設定できる。さらに、バッテリユニット10の高さH3を第2重量部W2の高さよりも低くすることで、後部座席5の乗員の頭上の空間を確保でき快適性を向上させることができる。
 また、バッテリユニット10を車室IN下に配置するとともに第2重量部W2をラゲッジルームLR下に配置することで、車両Vの重心高さを低くすることができ、車両Vの運転性能を向上させることができる。
<第2実施形態>
 次に本発明の第2実施形態の車両Vについて説明する。なお、第2実施形態の車両Vは、第1実施形態と第1重量部W1及び第2重量部W2を構成する要素が異なるのみであり、同一の構成については同一の符号を付して説明を省略する。
 本発明の第2実施形態の車両Vは、電気自動車であり、車室INの床面を形成するフロアパネル3の下方にバッテリユニット10が配置され、バッテリユニット10を挟んで2つの重量部が分散配置されることで、車両の重量バランスが保たれている。2つの重量部のうちの一方の第1重量部W1はフロントルームFRに設けられ、他方の第2重量部W2はラゲッジルームLR下に配置されている点は、第1実施形態と同じである。
[第1重量部]
 フロントルームFRに設けられる第1重量部W1は、モータMOTと、モータMOTを制御するインバータIVTと、外部電源から供給される電力によって複数のバッテリモジュール31~33の充電を行う充電器CHGと、を備える。
[第2重量部]
 ラゲッジルームLRに設けられる第2重量部W2は、バッテリユニット10に収容される複数のバッテリモジュール31~33とは別の、バッテリモジュール35を備え、バッテリモジュール35が、リヤサイドフレーム14,14に締結されるサブフレーム23に保持されている。
[相対的位置関係]
 第1重量部W1と第2重量部W2の相対的位置関係を説明すると、第1重量部W1と第2重量部W2とがバッテリユニット10を挟んで前後に配置され、地面GNDを基準として、第2重量部W2の高さH2は、第1重量部W1の高さH1よりも低くなっている。即ち、本実施形態において、第2重量部W2を構成する、バッテリモジュール35の最上面の高さH2が、第1重量部W1を構成する、モータMOTと、インバータIVTと、充電器CHGの最上面の高さH1よりも低くなっている。これにより、第2実施形態の電気自動車においても、第1実施形態のハイブリッド自動車と同様に、ラゲッジルームLRの床面の高さを低く抑えることができ、ラゲッジルームLRのスペースを確保できる。また、車両Vの重心高さを低くすることができ、車両Vの運転性能を向上させることができる。
 また、バッテリユニット10の高さH3は、後部座席5の下で最も高く、且つ、第2重量部W2の高さH2よりも低くなっている。これにより、第2実施形態の電気自動車においても、第1実施形態のハイブリッド自動車と同様に、床面を低く設定できるとともに、後部座席5の乗員の頭上の空間を確保でき快適性を向上させることができる。
<第3実施形態>
 以下、本発明の第3実施形態の車両Vについて説明する。なお、第3実施形態の車両Vは、第1及び2実施形態と、車室IN下の構成、及び、第1重量部W1及び第2重量部W2を構成する要素が異なるのみであり、同一の構成については同一の符号を付して説明を省略する。
 本発明の第3実施形態の車両Vは、燃料電池車であり、水素と酸素との電気化学反応によって発電を行う燃料電池FCと、加圧水素を貯蔵した2つの第1及び第2水素タンクHT1、HT2と、を備え、車室INの床面を形成するフロアパネル3の下方に、第1及び第2実施形態のバッテリユニット10より小さいバッテリユニット10A及び第1水素タンクHT1が配置され、バッテリユニット10A及び第1水素タンクHT1を挟んで2つの重量部が分散配置されることで、車両の重量バランスが保たれている。2つの重量部のうちの一方の第1重量部W1はフロントルームFRに設けられ、他方の第2重量部W2はラゲッジルームLR下に配置されている点は、第1及び第2実施形態と同じである。
 バッテリユニット10Aは前部座席4の下方に配置され、第1水素タンクHT1は後部座席5の下方に配置され、後部座席5の乗員の足元にバッテリユニット10A及び第1水素タンクHT1を配置しないことで、車室への影響を抑え、乗員の快適性を向上させることができる。また、第1水素タンクHT1は、後述する第2水素タンクHT2よりも小さく、後部座席5の高さが低く抑えられている。これらの構成により車高を低くすることが可能となっている。
[第1重量部]
 フロントルームFRに設けられる第1重量部W1は、モータMOTと、モータMOTを制御するインバータIVTと、燃料電池FCと、を備える。
[第2重量部]
 ラゲッジルームLRに設けられる第2重量部W2は、第2水素タンクHT2を備え、第2水素タンクHT2がリヤサイドフレーム14,14に締結されるサブフレーム23に保持されている。
[相対的位置関係]
 第1重量部W1と第2重量部W2の相対的位置関係を説明すると、第1重量部W1と第2重量部W2とがバッテリユニット10A及び第1水素タンクHT1を挟んで前後に配置され、地面GNDを基準として、第2重量部W2の高さH2は、第1重量部W1の高さH1よりも低くなっている。即ち、本実施形態において、第2重量部W2を構成する、第2水素タンクHT2の最上面の高さH2が、第1重量部W1を構成する、モータMOT、インバータIVT、及び燃料電池FCの最上面の高さH1よりも低くなっている。これにより、第3実施形態の燃料電池車においても、第1実施形態のハイブリッド自動車及び第2実施形態の電気自動車と同様に、ラゲッジルームLRの床面の高さを低く抑えることができ、ラゲッジルームLRのスペースを確保できる。
 また、車室INの床面を形成するフロアパネル3の下方に配置されるバッテリユニット10A及び第1水素タンクHT1において、バッテリユニット10Aの高さH3が、第1水素タンクHT1の高さH4より低く、相対的に高さの低いバッテリユニット10Aを前部座席4の下に配置するとともに、相対的に高さの高い第1水素タンクHT1を後部座席5の下に配置している。通常、後部座席5は前部座席4よりも高い位置に配置されるところ、それに合わせて相対的に高さの高い第1水素タンクHT1を後部座席5の下に配置することで、床面を低く設定できる。
 さらに、第1水素タンクHT1の高さH4は、第2重量部W2の高さよりも低くなっている。このように、第1水素タンクHT1の高さH4を第2重量部W2の高さよりも低くすることで、後部座席5の乗員の頭上の空間を確保でき快適性を向上させることができる。
 以上、本発明の実施の形態を説明したが、本発明はその要旨を逸脱しない範囲で種々の設計変更を行うことが可能である。
 例えば、第1実施形態のハイブリッド車では、第2重量部W2に燃料タンクFTとともに充電器CHGを配置したが、必ずしも充電器CHGは必要ではなく、外部充電ができない仕様にしてもよい。
 また、バッテリは、DC-DCコンバータ30、バッテリ用ECU40等のユニット化されていなくてもよい。バッテリとしては、リチウムイオン電池、ニッケル水素電池等の二次電池を用いることができる。
4     前部座席
5     後部座席
10    バッテリユニット(バッテリ)
12    フロアフレーム(車両骨格部材)
23    サブフレーム(フレーム部材)
31~33 バッテリモジュール
35    バッテリモジュール(他のバッテリ)
CHG   充電器
ENG   エンジン
FC    燃料電池
FR    フロントルーム
FT    燃料タンク
FW    前輪(車輪)
GEN   ジェネレータ(発電機)
H1    第1重量部の高さ
H2    第2重量部の高さ
H3    バッテリユニットの高さ(バッテリの高さ)
H4    第1水素タンクの高さ(他の水素タンクの高さ)
HT2   第2水素タンク(水素タンク)
IN    車室
IVT   インバータ(通電制御装置)
LR    ラゲッジルーム
MOT   モータ(電動機)
V     車両
W1    第1重量部(重量部)
W2    第2重量部(重量部)

Claims (9)

  1.  座席が設けられた車室と、
     該車室より前方に、該車室とは別空間として設けられたフロントルームと、
     該車室より後方に、該車室と同一空間若しくは別空間として設けられたラゲッジルームと、
     車輪を駆動する駆動部と該駆動部に燃料又は電力を供給する動力源との少なくとも一方を含む重量部と、
     前記駆動部に電力を供給するバッテリと、を備え、
     前記重量部は、第1重量部と第2重量部とを有し、
     該第1重量部と該第2重量部とは、少なくとも一方が前記駆動部を含む、車両であって、
     前記バッテリは、前記車室下に設けられ、
     前記第1重量部は、前記フロントルームに設けられ、
     前記第2重量部は、前記ラゲッジルーム下に設けられ、
     前記第2重量部の高さは、前記第1重量部の高さよりも低い、車両。
  2.  請求項1に記載の車両であって、
     前記第1重量部は、電動機と、該電動機の通電制御を行う通電制御装置と、燃料電池と、を含み、
     前記第2重量部は、水素タンクを含み、
     燃料電池車である、車両。
  3.  請求項1に記載の車両であって、
     前記第1重量部は、エンジンと、電動機と、発電機と、該電動機及び該発電機の通電制御を行う通電制御装置と、を含み、
     前記第2重量部は、燃料タンクを含み、
     ハイブリッド車である、車両。
  4.  請求項3に記載の車両であって、
     前記第2重量部は、さらに充電器を含む、車両。
  5.  請求項1に記載の車両であって、
     前記第1重量部は、電動機と、該電動機の通電制御を行う通電制御装置と、充電器と、を含み、
     前記第2重量部は、他のバッテリを含み、
     電気自動車である、車両。
  6.  請求項1~5のいずれか1項に記載の車両であって、
     前記バッテリは、複数のバッテリモジュールから構成されるバッテリユニットをなし、
     前記バッテリモジュールは、前部座席下及び後部座席下に配置され、後部座席の乗員の足元には配置されない、車両。
  7.  請求項1~6のいずれか1項に記載の車両であって、
     前記第2重量部は、フレーム部材に固定され、
     前記フレーム部材は、前後方向に延びる左右一対の車両骨格部材に固定される、車両。
  8.  請求項1~7のいずれか1項に記載の車両であって、
     前記バッテリの高さは、後部座席の下で最も高く、且つ、前記第2重量部の高さよりも低い、車両。
  9.  請求項2に記載の車両であって、
     前記車室下に設けられる前記バッテリは、前部座席下に配置され、
     後部座席下には、他の水素タンクが設けられ、
     前記他の水素タンクの高さは、前記第2重量部の高さよりも低い、車両。
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