GB2369503A - Direct-drive wheel motor - Google Patents

Direct-drive wheel motor Download PDF

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Publication number
GB2369503A
GB2369503A GB0029011A GB0029011A GB2369503A GB 2369503 A GB2369503 A GB 2369503A GB 0029011 A GB0029011 A GB 0029011A GB 0029011 A GB0029011 A GB 0029011A GB 2369503 A GB2369503 A GB 2369503A
Authority
GB
United Kingdom
Prior art keywords
stator
rotor
shaft
direct
motor
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
GB0029011A
Other versions
GB0029011D0 (en
Inventor
Hsu Yu Cheng
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EVT TECHNOLOGY CO Ltd
Original Assignee
EVT TECHNOLOGY CO Ltd
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 EVT TECHNOLOGY CO Ltd filed Critical EVT TECHNOLOGY CO Ltd
Priority to GB0029011A priority Critical patent/GB2369503A/en
Priority to DE20021972U priority patent/DE20021972U1/en
Publication of GB0029011D0 publication Critical patent/GB0029011D0/en
Publication of GB2369503A publication Critical patent/GB2369503A/en
Withdrawn legal-status Critical Current

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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
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/20—Electric propulsion with power supplied within the vehicle using propulsion power generated by humans or animals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/52—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by DC-motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • 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
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/12—Bikes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/40—Electrical machine applications
    • B60L2220/44—Wheel Hub motors, i.e. integrated in the wheel hub
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/50—Structural details of electrical machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/421—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/423—Torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/425—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2270/00—Problem solutions or means not otherwise provided for
    • B60L2270/10—Emission reduction
    • B60L2270/14—Emission reduction of noise
    • B60L2270/142—Emission reduction of noise acoustic
    • 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
    • Y02T10/64—Electric machine technologies in electromobility
    • 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
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

A direct-drive wheel motor for an electric vehicle includes a wheel hub 1, a shaft 3, a motor 2 mounted along with the shaft in the hub, and a hub side-cover 4 (fig.2) holding the motor in the hub. The shaft 3 is fixed to the frame 5 of a vehicle. The rotor 21 of the motor includes commutator 211, windings 213 and iron core 212, and is mounted in the hub. The stator 22 of the motor is mounted on the shaft and includes permanent magnets 223 and carbon brushes 222. Power supply wires 31 extend from the brushes 222 through the shaft.

Description

DIRECT-DRIVE WHEEL MOTOR FOR ELECTRIC VEHICLE
The present invention relates to electric vehicles and, more specifically, to a direct-drive wheel motor for electric vehicle, which has a simple structure, and produces high output and low noise during operation.
An electric vehicle motor, as shown in FIG. 1, is comprised of a shaft A, a rotor B, a shell C, a gear set D, and a clutch E. The shaft A is mounted with the rotor B in the shell C. Inside the shell C, there are provided carbon brushes F and magnets G. Electric current is connected to the rotor B, causing the rotor B to induce with the magnets G a magnetic field to rotate the rotor B. After the revolving speed of the rotor B has surpassed a predetermined range, the clutch E is forced by a centrifugal force to connect the shaft A to the wheel hub to the shaft A, thereby causing the electric vehicle to move. This structure of electric vehicle motor has numerous drawbacks as outlined hereinafter.
1. Because the carbon brushes F are radially supported on the periphery of the rotor B, only one pair of carbon brushes (two poles) can be arranged in the limited space. Therefore, when electric current IS connected through the carbon brushes F to the rotor B to induce with the magnets G a magnetic field, the magnetic force thus produced is limited. Therefore, this
structure of electric vehicle motor is suitable for use in an apparatus requires low horsepower output, for example, an electric bicycle. Due to low output, this structure of electric vehicle motor cannot be used for an electric motorcycle or car.
2. Because the periphery of the rotor B can only support a limited number of poles (for example, two poles) of carbon brushes F, the rotor B revolves at a high speed when electrically connected.
Because the rotor B is rotated at a high speed, the carbon brushes F and the gear set D wear quickly with use, and much friction heat is produced during high speed rotary motion of the rotor B. Because the rotor B is enclosed in the shell C, friction heat cannot be quickly dissipated into the air. When the temperature of the rotor B is increased, the internal resistance is relatively increased to affect the power output and working efficiency of the motor. Therefore, this structure of electric vehicle motor is not durable in use.
3. In order to increase the magnetic force of the magnetic field, the number of turns of the windings of the rotor B may be increased.
However, increasing the length of the enameled wire of each winding relatively increases its internal resistance, and high impendance of the rotor B results in low working efficiency (about 0. 6-0. 7). Further, due to limited number of poles and high internal resistance, an overcurrent may occur when starting
the motor and accelerate the speed, causing the windings to be burned out. Therefore, this structure of electric vehicle motor cannot use high current for quick start or accelerating.
4. The mechanical action of the gear set and the clutch consumes much power, and produces high noise.
It is one object of the present invention to provide a direct-drive wheel motor, which provides high output. It is another object of the present invention to provide a direct-drive wheel motor, which produces less heat and less noise during its operation.
ion to pro'de a It is still another object of the present invention to provide a direct-drive wheel motor, which is durable in use. According to one aspect of the present invention, the direct-drive wheel motor for electric vehicle comprises a wheel hub, a shaft, a motor body formed of a stator and a rotor and mounted with the shaft in the wheel hub, and a side cover covered on the wheel hub to hold the motor body in the wheel hub, wherein the stator is fixedly mounted in the wheel hub, and has a steering device at the bottom side thereof ; the rotor is fixedly mounted on the shaft, and has a top side disposed at a lower elevation than the top side of the stator, a set of carbon brushes electrically connected to the steering device, and a set of wires extended from the carbon brushes through the shaft to the outside for connection to power supply to obtain electricity for
the steering device of the stator for inducing a magnetic field to rotate the stator and the wheel hub relative to the rotor. According to another aspect of the present invention, the carbon brushes of the rotor are arranged in axial direction and spaced around the shaft, and disposed in contact with respective contacts of the steering device. Because the carbon brushes are arranged in axial direction, much number of carbon brushes can be installed in the rotor to achieve low revolving speed, high torsional force, and high performance. Therefore, the motor can be started quickly, and accelerated to the maximum speed within a short time. Because the motor eliminates the use of gear set and clutch means for power transmission, it eliminates possible power loss. Therefore, the structure of the motor is simple, and less noise is produced during the operation of the motor.
FIG. 1 is sectional view of an electric vehicle motor according to the prior art.
FIG. 2 is an exploded view of a direct-drive wheel motor according to the present invention.
FIG. 3 is an elevational assembly view of the direct-drive wheel motor according to the present invention.
FIG. 4 is a sectional view of the direct-drive wheel motor according to the present invention.
Referring to FIGS. from 2 through 4, a direct-drive wheel motor in accordance with the present invention is generally comprised of a wheel hub 1, a motor body 2, a shaft 3, and a side cap 4. The shaft 3 is mounted with the motor body 2 in a receiving chamber in the wheel hub 1 at one side. The side cover 4 is covered on the wheel hub 1 to hold the motor body 2 and the shaft 3 in place.
The motor body 2 comprises a stator 21, and a rotor 22. The stator 21 is fixedly mounted within the wheel hub 1, having a steering device 211 at a bottom side thereof. The rotor 22 is fixedly mounted on the shaft 3, having a top (outer) side disposed at a lower elevation than the top (outer) side of the stator 21. When installed, an elevation difference D is defined between the top (outer) side of the stator 21 and the top (outer) side of the rotor 22.
The rotor 22 comprises a set of carbon brushes 222 electrically connected to the steering device 211. Lead wires 31 are connected to the carbon brushes 222 and extended through the shaft 3 to the outside for connection to power supply. When electric current is connected to the lead wires 31, it passes through the carbon brush 222 to the steering device 211, causing the stator 21 and the rotor 22 to induce a magnetic field. As indicated above, the rotor 22 is fixedly fastened to the shaft 3, the stator 21 is fixedly fastened to the inside wall of the wheel hub 1, the two distal ends of the shaft 3
are fixedly fastened to the vehicle frame 5, and there is an elevation difference D defined between the top (outer) side of the stator 21 and the top (outer) side of the rotor 22. The induction of the magnetic field causes a torque to be produced to rotate the stator 21 relative to the rotor 22. Upon rotary motion of the stator 21 relative to the rotor 22, the wheel hub I is rotated with the stator 21 to move the vehicle.
Referring to FIG. 4 again, the stator 21 comprises an iron core 212, a plurality of windings 213 equiangularly spaced around the iron core 212, and the aforesaid steering device 211.
The steering device 211 is shaped like a disk, and disposed at the bottom side of the stator 21. The two opposite ends of the enameled wire of each winding 213 are connected to respective contacts at the steering device 211. The steering device 211 has pairs of contacts matching the windings 213 subject to the desired layout (for example, 32-pole, 64-pole), so that the desired torsional force is produced to rotate the stator 21 relative to the rotor 22 upon connection of electricity. The rotor 22 comprises a carbon brush rack 221, the aforesaid carbon brushes 222, and a plurality of permanent magnets 223. The carbon brush rack 221 is fixedly fastened to the shaft 3, having a plurality of carbon brush mounting holes equiangu ! ar) y spaced around the shaft 3 and adapted to hold the carbon brushes 222 in axial direction, and a metal peripheral
layer 224. The permanent magnets 223 are equiangularly arranged around the periphery of the metal peripheral layer 224 of the carbon brush rack 221, and define with the top (outer) side of the stator 21 the aforesaid elevation difference D. Further, axle bearing means is mounted in the wheel hub 1 to support the shaft 3.
As indicated above, the carbon brush rack 221 of the rotor 22 is fixedly fastened to the shaft 3, and the lead wires 31 are extended from the carbon brushes 222 through the shaft 3 and connected to power supply to obtain the necessary electric current for the stator 21. Because the permanent magnets 223, the carbon brush rack 221 and the stator 21 are respectively fixedly fastened to the outside wall of the carbon brush rack 221, the shaft 3 and the wheel hub 1 and because there is an elevation difference D defined between the permanent magnets 223 of the rotor 22 and the stator 21, a magnetic field is induced between the stator 21 and the permanent magnets 223 of the rotor 22 upon connection of electric current to the carbon brushes 222, which magnetic filed produces a magnetic force that forces the stator 21 to rotate relative to the rotor 22, and therefore the electric vehicle is moved upon rotary motion of the wheel hub 1 with the stator 21.
While only one embodiment of the present invention has been shown and described, it will be understood that various modifications and changes could be made thereunto without departing from the spirit and scope of the invention disclosed.

Claims (7)

  1. CLAIMS A direct-drive wheel motor for electric vehicle comprising a wheel hub, a shaft, a motor body mounted with said shaft in said wheel hub, and a side cover covered on said wheel hub to hold said motor body in said wheel hub, wherein : said motor body comprises a stator and a rotor, said stator being fixedly mounted in said wheel hub and having a top side facing said side cover, a bottom side, and a steering device at said bottom side, said rotor being fixedly mounted on said shaft and having a top side disposed at a lower elevation than the top side of said stator, said rotor comprising a set of carbon brushes electrically connected to said steering device and a set of wires extended from said carbon brushes through said shaft to the outside for connection to power supply to obtain electricity for said steering device of said stator for inducing a magnetic field to rotate said stator and said wheel hub relative to said rotor.
  2. 2. The direct-drive wheel motor of claim 1, wherein said stator is comprised of an iron core, a plurality of windings equiangularly spaced around said iron core, and said steering, said steering device being shaped like a disk and disposed at the bottom side of said stator, said windings each having two opposite ends electrically connected to respective contacts at said steering device, said steering device having pairs of contacts matching said
    windings subject to the desired layout, so that the desired torsional force is produced to rotate said stator relative to said rotor upon connection of electricity to said carbon brushes.
  3. 3. The direct-drive wheel motor of claim 1, wherein said rotor is comprised of a carbon brush rack, said carbon brushes, and a plurality of permanent magnets, said carbon brush rack being fixedly fastened to said shaft, said carbon brush having a plurality of carbon brush mounting holes equiangularly spaced around said shaft and adapted to hold said carbon brushes respectively and a metal peripheral layer, said permanent magnets being equiangu ! ar ! y arranged around the periphery of said metal peripheral layer of said carbon brush rack and defining with the top side of said stator said elevation difference for enabling said stator to be rotated relative to said rotor upon connection of electric current to said carbon brushes.
  4. 4. The direct-drive wheel motor of claim I further comprising axle bearing means mounted in said wheel hub to support said shaft.
  5. 5. The direct-drive wheel motor of claim 3, wherein said carbon brushes, said permanent magnets and said stator are of mufti-pole arrangement to bear instant start current when turning on the direct-drive wheel motor.
  6. 6. The direct-drive wheel motor of claim 3, wherein said carbon brushes are respectively mounted in the carbon brush mounting holes of said carbon brush rack in axial direction and respectively disposed in contact with said steering device for transmission of electric current to said steering device.
  7. 7. A direct drive wheel motor constructed and arranged as described herein and as exemplified with reference to the drawings.
GB0029011A 2000-11-28 2000-11-28 Direct-drive wheel motor Withdrawn GB2369503A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0029011A GB2369503A (en) 2000-11-28 2000-11-28 Direct-drive wheel motor
DE20021972U DE20021972U1 (en) 2000-11-28 2000-12-28 Direct drive motor for the rim of an electric car

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0029011A GB2369503A (en) 2000-11-28 2000-11-28 Direct-drive wheel motor
DE20021972U DE20021972U1 (en) 2000-11-28 2000-12-28 Direct drive motor for the rim of an electric car

Publications (2)

Publication Number Publication Date
GB0029011D0 GB0029011D0 (en) 2001-01-10
GB2369503A true GB2369503A (en) 2002-05-29

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Family Applications (1)

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GB0029011A Withdrawn GB2369503A (en) 2000-11-28 2000-11-28 Direct-drive wheel motor

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DE (1) DE20021972U1 (en)
GB (1) GB2369503A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6768932B2 (en) 2001-12-07 2004-07-27 General Motors Corporation Wheel motor system
US7658251B2 (en) 2006-09-20 2010-02-09 James Harry K Direct drive electric traction motor
CN102804555A (en) * 2010-03-26 2012-11-28 本田技研工业株式会社 Vehicle provided with a driving motor
CN103026595A (en) * 2010-07-23 2013-04-03 朴桂正 Electric motor for electric cars
CN104024015A (en) * 2011-08-24 2014-09-03 舍弗勒技术有限两合公司 Wheel hub drive system
WO2015184673A1 (en) * 2014-06-06 2015-12-10 嘉兴亚特园林机械研究所 Embedded outer rotor electric motor direct-drive lawnmower drive wheel, and lawnmower
WO2020069751A1 (en) 2018-10-05 2020-04-09 Volvo Construction Equipment Ab A power supply connector with multiple connections for relatively moving parts of a working machine, a use of a power supply connector with multiple connections

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009023221A1 (en) * 2009-05-29 2010-12-02 Karl-Josef Schmidt electric drive
CN106994896A (en) * 2016-01-25 2017-08-01 上海智远弘业机器人有限公司 A kind of wheel driver
CN108482105A (en) * 2018-05-22 2018-09-04 刘昱含 Dynamoelectric and power generation integral type outer rotor hub unit and electric vehicle
CN110860977B (en) * 2019-12-17 2024-07-16 江苏珀然车轮智造有限公司 Grinding device is used in production of passenger car wheel hub

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5164623A (en) * 1989-09-01 1992-11-17 Shkondin Vasily V Independent-drive wheel for a wheel-mounted vehicle
WO1993015546A1 (en) * 1992-01-30 1993-08-05 P & H Techno Ag Electric motor for driving a wheel
EP0695662A1 (en) * 1994-08-04 1996-02-07 Chen-Chi Yang A driving assembly for motor wheels and method of making the same
GB2296134A (en) * 1993-12-20 1996-06-19 Li I Ho Electric motor-in-wheel
US5600191A (en) * 1994-12-19 1997-02-04 Yang; Chen-Chi Driving assembly for motor wheels
GB2345586A (en) * 1999-01-11 2000-07-12 Elliott Ind Ltd An electric motor, a wheel and drive apparatus for an electric vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5164623A (en) * 1989-09-01 1992-11-17 Shkondin Vasily V Independent-drive wheel for a wheel-mounted vehicle
WO1993015546A1 (en) * 1992-01-30 1993-08-05 P & H Techno Ag Electric motor for driving a wheel
GB2296134A (en) * 1993-12-20 1996-06-19 Li I Ho Electric motor-in-wheel
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US6768932B2 (en) 2001-12-07 2004-07-27 General Motors Corporation Wheel motor system
US7658251B2 (en) 2006-09-20 2010-02-09 James Harry K Direct drive electric traction motor
CN102804555B (en) * 2010-03-26 2014-12-03 本田技研工业株式会社 Vehicle provided with a driving motor
CN102804555A (en) * 2010-03-26 2012-11-28 本田技研工业株式会社 Vehicle provided with a driving motor
CN103026595B (en) * 2010-07-23 2015-03-18 朴桂正 Electric motor for electric cars
CN103026595A (en) * 2010-07-23 2013-04-03 朴桂正 Electric motor for electric cars
CN104024015A (en) * 2011-08-24 2014-09-03 舍弗勒技术有限两合公司 Wheel hub drive system
US9073425B2 (en) 2011-08-24 2015-07-07 Schaeffler Technologies AG & Co. KG Wheel hub drive system
CN104024015B (en) * 2011-08-24 2017-06-13 舍弗勒技术股份两合公司 Wheel hub driving system
WO2015184673A1 (en) * 2014-06-06 2015-12-10 嘉兴亚特园林机械研究所 Embedded outer rotor electric motor direct-drive lawnmower drive wheel, and lawnmower
EP3152998A4 (en) * 2014-06-06 2017-12-27 Zhejiang Yat Electrical Appliance Co., Ltd. Embedded outer rotor electric motor direct-drive lawnmower drive wheel, and lawnmower
US10034429B2 (en) 2014-06-06 2018-07-31 Zhejiang Yat Electrical Appliance Co., Ltd Embedded-outer rotor motor direct driven mower driving wheel and mower
AU2014396653B2 (en) * 2014-06-06 2018-10-18 Zhejiang Yat Electrical Appliance Co., Ltd Embedded-outer rotor motor direct driven mower driving wheel and mower
WO2020069751A1 (en) 2018-10-05 2020-04-09 Volvo Construction Equipment Ab A power supply connector with multiple connections for relatively moving parts of a working machine, a use of a power supply connector with multiple connections
US11646538B2 (en) 2018-10-05 2023-05-09 Volvo Construction Equipment Ab Power supply connector with multiple connections for relatively moving parts of a working machine, a use of a power supply connector with multiple connections

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DE20021972U1 (en) 2001-03-15

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