Classifications

• • 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
  • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
  • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
• • 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
  • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
  • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
  • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
  • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
• • 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
  • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
  • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
  • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
  • B60K6/48—Parallel type
• • 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
  • B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
• • 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
  • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
  • B60K2007/0038—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the wheel axle
• • 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
  • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
  • B60K2007/0092—Disposition of motor in, or adjacent to, traction wheel the motor axle being coaxial to the wheel axle
• • 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
  • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
• • 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
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/60—Other road transportation technologies with climate change mitigation effect
  • Y02T10/62—Hybrid vehicles

Definitions

• the present invention relates to hybrid drive trains. More specifically, the present invention is concerned with a hybrid drive train provided with electric hub motors in the driving wheels of a vehicle.
• ICE internal combustion engine
• electric traction motor that may transfer power to at least one traction wheel of the vehicle.
• a hybrid drive train is said to be a parallel hybrid drive train when both the traction motor and the ICE may be used simultaneously or individually to transfer power to the wheels of the vehicle.
• the ICE may also be used to recharge batteries of the vehicle through an electric generator.
• Some hybrid drive trains are purely parallel and some may selectively be changed from a parallel to a serial configuration.
• An object of the present invention is therefore to provide an improved hybrid drive train provided with hub motors.
• a hybrid drive train for a vehicle provided with at least one driving wheel
• the drive train comprising: at least one hub motor associated with a respective one of the at least one driving wheel; each the at least one hub motor being provided with a stator mounted to the vehicle and a rotor secured to the respective one of the at least one driving wheel; and an engine provided with a rotatable output shaft; the rotatable output shaft being operatively coupled to the respective one of the at least one driving wheel.
• a hub motor for a driving wheel part of a vehicle provided with a hybrid drive train, the hybrid drive train including an engine provided with a rotatable output shaft, the hub motor comprising: a stator mounted to the vehicle; a rotor; and a coupling element for interconnecting the rotor with the driving wheel, and for interconnecting the rotatable output shaft with both the rotor and the driving wheel.
• a coupling element for interconnecting a rotor of a hub motor to a driving wheel in a hybrid drive train, the hybrid drive train further comprising an engine provided with an output shaft, the coupling element comprising: a first interconnecting portion for interconnection with the driving wheel; a second interconnecting portion for interconnection with the output shaft; and a third interconnecting portion for interconnection with the rotor.
• a hybrid drive train for a vehicle provided with first and second driving wheels
• the drive train comprising: an internal combustion engine (ICE) provided with an output shaft; first and second hub motors each associated with a respective driving wheel; each the first and second hub motors being provided with a stator and a rotor; the stator being mounted to the vehicle and the rotor being mounted to a respective driving wheel; a first cardan joint assembly interconnecting the output shaft and the first driving wheel; and a second cardan joint assembly interconnecting the output shaft and the second driving wheel; wherein a) when the hub rotor is energized, the drive train is placed in a parallel hybrid driving mode and b) when the hub motor is not energized, the drive train is in a conventional driving mode.
• ICE internal combustion engine
• hub motor is to be construed herein as a either a conventional hub motor, a motor-wheel, or any other electric motor configuration where at least part of the device is mounted in close proximity of the driving wheel of the vehicle.
• Figure 1 is a schematic view of a parallel hybrid drive train according to an illustrative embodiment of the present invention
• Figure 2 is a sectional view of a traction wheel provided with a hub motor used in the parallel hybrid drive train of Figure 1 ;
• Figure 3 is a close-up view of the hub motor of Figure 1.
• the present invention is concerned with a hybrid drive train provided with a central internal combustion engine (ICE) that conventionally supplies mechanical power to driving wheels of a vehicle.
• ICE central internal combustion engine
• Each driving wheel is provided with a respective hub motor having a stator mounted to the vehicle and a rotor directly connected to the driving wheel.
• the interconnection between the ICE and the driving wheel is done via the rotor of the hub motor.
• a cardan joint assembly is provided between the output shaft of the ICE and each rotor of the hub motors. Accordingly, when the hub motors are energized, the drive train is in a parallel hybrid mode where both the ICE and the hub motors contribute to the rotation of the wheel.
• the drive train may also be placed in a conventional mode where the hub motors are not energized and in a purely electric mode when the ICE is not running.
• the drive train 10 includes an ICE 12 provided with a transmission 14, two driving wheels 16 and 18 interconnected to the transmission 14 via respective cardan joint assemblies 20 and 22.
• the driving wheels 16 and 18 are therefore indirectly connected to the output shaft (not shown) of the ICE 12.
• Figures 2 and 3 of the appended drawings the driving wheel 16 of the parallel hybrid drive train 10 will be described. It is to be noted that since the driving wheels 16 and 18 are identical, only the driving wheel 16 will be described in details hereinbelow.
• the driving wheel 16 includes a hub motor 24 provided with a stator 26 and a rotor 28.
• a coupling element 30 is mounted to the rotor 28 via fastening means in the form of fasteners 31 and supports a hub 32 to which a rim 34 is mounted.
• a tire 36 is mounted to the rim 34.
• Other fastening means, such as welding may also be used to secure the coupling element 31 to the rotor 28.
• FIG 3 is a close-up view of the hub motor of Figure 2.
• the coupling element 30 includes a spined aperture 38 so configured and sized as to receive a spined portion 40 of the shaft 42 of the cardan joint assembly 20.
• the cardan joint assembly 20 is partly supported by a seal 44 provided between the cardan joint assembly 20 and the hub motor 24.
• the coupling element 30 further interconnects the output shaft of the ICE 12 to both the driving wheel 16 and the rotor 28 via the cardan joint assembly 20.
• the hub motor 24 is of the external rotor type, i.e. the rotor 28 is concentric with the stator 26 but is externally mounted.
• a curved wall 46 joins the rotor 28 and the coupling element 30.
• the coupling element 30 is in the form of an elongated body having a first interconnecting generally cylindrical portion 52 to snuggly complement the hub 32 and a second interconnecting portion 54 extending longitudinally from the first portion and including the spined aperture to receive the spined portion 40 of the shaft 42.
• the coupling element further includes a peripheral flange 56, extending from the second portion, to receive the fasteners 31.
• the hub motor 24 is also configured so as to include a recessed portion 58 for receiving part of the cardan joint assembly 20 so as to increase the interconnection between the cardan joint assembly 20 and the hub motor 24.
• the longitudinal position of the peripheral flange may vary.
• the coupling element 30 may have other configuration allowing interconnecting the rotor 28 with the driving wheel 16, and for interconnecting the shaft 42 with both the rotor 28 and the driving wheel 16.
• the rotor 28 and stator 26 are covered by a casing 48 that encloses the motor 24 and also supports bearings 50.
• the ICE 12 In a first conventional driving mode, the ICE 12 is energized, causes the rotation of the cardan joint assemblies 20 and 22 to thereby drive the driving wheels 16 and 18. While the drive train 10 is in this mode, the hub motors 24 (only one shown) are not energized and their respective rotors 28 (only one shown) are freewheeling. [0029] In a second hybrid driving mode, the ICE 12 is energized, causes the rotation of the cardan joint assemblies 20 and 22 to thereby drive the driving wheels 16 and 18.
• the hub motors 24 (only one shown) are energized and their respective rotors 28 (only one shown) are rotated both via their direct connection to the cardan joint assembly 20 and by the electric current flowing through the stator 26. Accordingly, both the ICE 12 and the hub motors 24 are used to drive the driving wheels 16 and 18.
• the hub motors 24 (only one shown) are energized and their respective rotors 28 (only one shown) are rotated via the electric current flowing through the stator 26.
• the interconnection between the cardan joint assembly and the wheel could be different than the one illustrated without departing from the present invention.
• the end of the cardan joint could be conventionally secured to the wheel via a fastener and the rotor of the motor could be associated with the wheel while the stator is associated with the chassis of the vehicle.
• the present invention could be used with a vehicle having four driving wheels.
• the present invention can also be used without a cardan joint assembly, wherein, the coupling element directly receives the output shaft of an ICE.
• the present invention can also then be used in vehicle provided with a single hub motor.
• the present invention is not limited to hybrid drive trains including an ICE. Any other type of engine can alternatively be provided to transfer power to the driving wheels in parallel to the hub motors.
• the coupling element 30 can be part of the hub motor 24, an extension of the cardan joint assembly, or simply an independent part of the hybrid drive train.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Hybrid Electric Vehicles (AREA)
• Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
• Electric Propulsion And Braking For Vehicles (AREA)
• Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Applications Claiming Priority (2)

Publications (2)

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ID=36036040

Family Applications (1)

Country Status (6)

Families Citing this family (10)

Citations (5)

Family Cites Families (6)

• 2005
  • 2005-09-01 EP EP05778853A patent/EP1817193A4/de not_active Withdrawn
  • 2005-09-01 CN CNA2005800301741A patent/CN101027202A/zh active Pending
  • 2005-09-01 KR KR1020077005448A patent/KR20070049203A/ko not_active Withdrawn
  • 2005-09-01 CA CA002575749A patent/CA2575749A1/en not_active Abandoned
  • 2005-09-01 JP JP2007530555A patent/JP2008512294A/ja active Pending
  • 2005-09-01 WO PCT/CA2005/001340 patent/WO2006026852A1/en not_active Ceased

Patent Citations (5)

Non-Patent Citations (1)

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