WO2011019715A1 - Bicyclette motorisée à roues avant et arrière motrices - Google Patents

Bicyclette motorisée à roues avant et arrière motrices Download PDF

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Publication number
WO2011019715A1
WO2011019715A1 PCT/US2010/045016 US2010045016W WO2011019715A1 WO 2011019715 A1 WO2011019715 A1 WO 2011019715A1 US 2010045016 W US2010045016 W US 2010045016W WO 2011019715 A1 WO2011019715 A1 WO 2011019715A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric motor
powered vehicle
wheel
electric
motor
Prior art date
Application number
PCT/US2010/045016
Other languages
English (en)
Inventor
Michael Krieger
Henry Shum
Original Assignee
Michael Krieger
Henry Shum
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.)
Filing date
Publication date
Application filed by Michael Krieger, Henry Shum filed Critical Michael Krieger
Publication of WO2011019715A1 publication Critical patent/WO2011019715A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M23/00—Transmissions characterised by use of other elements; Other transmissions
    • B62M23/02—Transmissions characterised by use of other elements; Other transmissions characterised by the use of two or more dissimilar sources of power, e.g. transmissions for hybrid motorcycles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • B62M6/60—Rider propelled cycles with auxiliary electric motor power-driven at axle parts
    • B62M6/65—Rider propelled cycles with auxiliary electric motor power-driven at axle parts with axle and driving shaft arranged coaxially

Definitions

  • This patent application relates generally to motorized vehicles, such as scooters, electric bicycles, and mopeds. More specifically, this patent application relates to an electric bicycle that has front and rear wheel drive.
  • the speed vs. efficiency curve for a conventional electric bicycle having a motor in either the front hub or the rear hub is shown. As shown, the efficiency of the electric bicycle is approximately 85% for speeds between 10 miles/hour and 15 miles/hour. However, due to the speed vs. toque characteristics of typical electromagnetic motors, the efficiency greatly drops for speeds below 10 miles/hour and for speeds above 15 miles/hour. This can lead to undesirable performance of the bicycle, and/or decreased battery life.
  • FIG. 1 is an illustrative speed vs. efficiency curve for a conventional single-motor electric bicycle having an electromagnetic motor located in either the front wheel or the rear wheel;
  • FIG. 2 is an illustrative side-perspective view of an electric bicycle according to the present invention, having electromagnetic motors in both the front hub and the rear hub; and [0007]
  • FIG. 3 is an illustrative speed vs. efficiency curve for the electric bicycle of FIG. 2.
  • the motorized vehicle can comprise an electric bicycle, scooter, moped, or other type of vehicle driven by human and/or motorized propulsion.
  • the motorized vehicle will be described in connection with an electric bicycle 20.
  • the bicycle 20 can generally include a frame 22, a front wheel
  • the bicycle 20 can further include handlebars 30 coupled to the front wheel 24, for example, through the front fork 26, to provide steering of the front wheel 24. Additionally, the bicycle 20 can include a seat 32 to support the rider.
  • the front wheel 24 can include a front hub 34 housing a front motor (hidden from view), such as an electromagnetic motor.
  • the rear wheel 28 can include a rear hub 36 housing a rear motor (hidden from view), such as an electromagnetic motor.
  • the front and/or rear motors can comprise brushless motors, however, other types of motors are possible.
  • the front and/or rear motors can each have a maximum power output in the range of about 100 watts and about 375 watts, more specifically, between 150 watts and 180 watts.
  • the front and rear motors can be coupled to the front and rear wheels 24, 28, respectively, through reduction gears, such as spur gears, planetary gears, or worm gears.
  • reduction gears such as spur gears, planetary gears, or worm gears.
  • the front and rear motors can be coupled to the front and rear wheels 24, 28, respectively via direct drive.
  • the bicycle 20 can further include a battery 37 and a controller
  • the controller 38 and/or battery 37 can be mounted, for example, in or on the frame 22.
  • the battery 37 can be centrally located between the front wheel 24 and the rear wheel 28, providing balance to the bicycle 20 as compared to conventional bicycles having a motor in just the front wheel or rear wheel.
  • the bicycle 20 can include a throttle 39 mounted, for example, on the handlebars 30, and in communication with the controller 38, through which the rider can control the speed of the bicycle 20.
  • pedals 40 can be coupled to the front and/or rear wheels 24, 28, for example, using a shaft, chain, or belt drive 42.
  • the pedals 40 can be used by the rider to provide pedal power to the front and/or rear wheels 24, 28 in addition to the motors, or as an alternative to the motors. If provided, the pedals 40 can additionally be in communication with the controller 38, for example, to adjust the speed of the bicycle 20.
  • FIG. 3 an illustrative speed vs. efficiency curve for an electric bicycle according to the present invention is shown.
  • the front and rear motors can be configured to have different speed/torque characteristics.
  • one of the motors shown in FIG. 3 as the "first motor” can be configured (e.g., wound) to exhibit high torque at low speed, while the other motor (shown in FIG. 3 as the "second motor”) can be configured to exhibit high torque at higher speeds.
  • the controller 38 can be configured to distribute power to the first motor or second motor, for example, to meet the riding conditions of the bicycle 20.
  • most or all of the battery power can be provided to the first motor during acceleration or climbing; and most or all of the battery power can be provided to the second motor during high speed cruising or descending.
  • power can be distributed between the first and second motors in various ratios.
  • the controller can be programmed to distribute power to the first and/or second motor in dependence on the amount of traction available at the corresponding wheels, for example, to provide a traction control.
  • the combination of the front motor and rear motor can provide increased efficiency over a wider range of speeds as compared to the prior art bicycles.
  • the first and second motors can work in unison to provide approximately 85% efficiency over a speed range of between about 6 miles/hour and 20 miles/hour, in contrast to between 10 miles/hour and 15 miles/hour, as in the prior art curve of FIG. 1.
  • the controller 38 can comprise a torque sensor associated with the front wheel 24 and/or the rear wheel 28, although other configurations are possible.
  • the torque sensor can work in unison to distribute power to the front wheel 24 and/or the rear wheel 28.
  • the controller 38 can distribute power to the front wheel 24 and/or rear wheel 28 based on speed, current, and back EMF of at least one of the front and rear motors. Additionally or alternatively, the controller 38 can distribute power to the front wheel 24 and/or rear wheel 28 based on the speed of the bicycle 20, position of the throttle 39, and/or the speed, force, and/or torque at pedals 40. According to an illustrative embodiment, the front and/or rear motors can provide power to the battery 37 through regenerative braking.
  • the front and rear wheel hub-drive embodiments described herein can provide one or more advantages over the prior art.
  • the combination of the front and rear wheel motors can: extend battery life, particularly when the bicycle 20 is making numerous stops and starts, or being ridden in hilly terrain; improve acceleration and/or hill climbing; and/or improve traction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

L'invention porte sur un véhicule à moteur électrique qui comprend un cadre, une roue avant accouplée au cadre, la roue avant comprenant un moyeu avant qui renferme un moteur électrique avant, une roue arrière accouplée au cadre, la roue arrière comprenant un moyeu arrière qui renferme un moteur électrique arrière, un accumulateur destiné à fournir l'énergie au moteur électrique avant et au moteur électrique arrière, et un dispositif de commande programmé pour distribuer l'énergie de l'accumulateur au moteur électrique avant et au moteur électrique arrière.
PCT/US2010/045016 2009-08-10 2010-08-10 Bicyclette motorisée à roues avant et arrière motrices WO2011019715A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US23266609P 2009-08-10 2009-08-10
US61/232,666 2009-08-10

Publications (1)

Publication Number Publication Date
WO2011019715A1 true WO2011019715A1 (fr) 2011-02-17

Family

ID=43586428

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2010/045016 WO2011019715A1 (fr) 2009-08-10 2010-08-10 Bicyclette motorisée à roues avant et arrière motrices

Country Status (1)

Country Link
WO (1) WO2011019715A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3090934A1 (fr) * 2015-05-06 2016-11-09 Bhbikes Europe, S.L. Bicyclette à pédalage assisté
WO2017152084A1 (fr) 2016-03-03 2017-09-08 Jackson Britt Commande d'entraînement électrique dynamique
WO2018113998A1 (fr) * 2016-12-23 2018-06-28 Keppens Tomas Bernhard Guy Groupe motopropulseur hybride pour véhicule à pédales et son unité de commande
FR3081823A1 (fr) * 2018-06-01 2019-12-06 Gustave Boudoube Velo a assistance electrique comprenant un ensemble electromecanique de recharge
ES2875223A1 (es) * 2020-05-04 2021-11-08 Cecotec Res And Development Sistema de control de traccion para vehiculo electrico de dos ruedas
WO2023119145A1 (fr) * 2021-12-23 2023-06-29 Zehus S.P.A. Bicyclette à assistance électrique et procédé de commande de bicyclette à assistance électrique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4143557A (en) * 1977-04-18 1979-03-13 Sanyo Electric Co., Ltd Control system for use in a multiple speed transmission system
US6155369A (en) * 1998-03-26 2000-12-05 Whittaker; Ronald W. Electric bicycle
US6355996B1 (en) * 1998-05-11 2002-03-12 Rabbit Tool U.S.A., Inc. Modular motorized electric wheel hub assembly for bicycles and the like
US20070169973A1 (en) * 2006-01-24 2007-07-26 Piaggio & C. S. P.A Two-wheel vehicle with integral wheel-drive

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4143557A (en) * 1977-04-18 1979-03-13 Sanyo Electric Co., Ltd Control system for use in a multiple speed transmission system
US6155369A (en) * 1998-03-26 2000-12-05 Whittaker; Ronald W. Electric bicycle
US6355996B1 (en) * 1998-05-11 2002-03-12 Rabbit Tool U.S.A., Inc. Modular motorized electric wheel hub assembly for bicycles and the like
US20070169973A1 (en) * 2006-01-24 2007-07-26 Piaggio & C. S. P.A Two-wheel vehicle with integral wheel-drive

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3090934A1 (fr) * 2015-05-06 2016-11-09 Bhbikes Europe, S.L. Bicyclette à pédalage assisté
WO2017152084A1 (fr) 2016-03-03 2017-09-08 Jackson Britt Commande d'entraînement électrique dynamique
CN109070964A (zh) * 2016-03-03 2018-12-21 布莱特·杰森 动态式电动驱动控制
EP3423338A4 (fr) * 2016-03-03 2019-10-30 Jackson, Britt Commande d'entraînement électrique dynamique
WO2018113998A1 (fr) * 2016-12-23 2018-06-28 Keppens Tomas Bernhard Guy Groupe motopropulseur hybride pour véhicule à pédales et son unité de commande
EP3558805A1 (fr) * 2016-12-23 2019-10-30 intuEdrive BV Groupe motopropulseur hybride pour véhicule à pédales et son unité de commande
US11352097B2 (en) 2016-12-23 2022-06-07 Intuedrive Bv Hybrid powertrain for a pedal vehicle, control unit therefor, pedal vehicle
FR3081823A1 (fr) * 2018-06-01 2019-12-06 Gustave Boudoube Velo a assistance electrique comprenant un ensemble electromecanique de recharge
ES2875223A1 (es) * 2020-05-04 2021-11-08 Cecotec Res And Development Sistema de control de traccion para vehiculo electrico de dos ruedas
WO2021224528A1 (fr) * 2020-05-04 2021-11-11 Cecotec Research And Development, S.L. Système de commande de traction pour véhicule électrique à deux roues
WO2023119145A1 (fr) * 2021-12-23 2023-06-29 Zehus S.P.A. Bicyclette à assistance électrique et procédé de commande de bicyclette à assistance électrique

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