CN102774271A - Electric drive system for vehicle wheel - Google Patents

Electric drive system for vehicle wheel Download PDF

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Publication number
CN102774271A
CN102774271A CN2012102738872A CN201210273887A CN102774271A CN 102774271 A CN102774271 A CN 102774271A CN 2012102738872 A CN2012102738872 A CN 2012102738872A CN 201210273887 A CN201210273887 A CN 201210273887A CN 102774271 A CN102774271 A CN 102774271A
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China
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wheel
electric
wheel hub
computer control
hub
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CN2012102738872A
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Chinese (zh)
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CN102774271B (en
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吴尤利
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Individual
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Publication of CN102774271B publication Critical patent/CN102774271B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention discloses an electric drive system for a vehicle wheel. The electric drive system comprises a computer control device, a rectifier, a storage battery, a vehicle wheel motor and an electric engine, wherein the computer control device controls the storage battery to supply power to the electric engine to drive the vehicle wheel to rotate; the vehicle wheel motor is switched between a generator and the motor under control of the computer control device, and when the vehicle wheel motor serves as an engine to output torque outwards, the direction of the torque output outwards is controlled by the computer control device; when the vehicle wheel motor serves as the generator, electric energy is output outwards along with rotation of the wheel, and the storage battery is charged through the rectifier under the control of the computer control device. After an output shaft of the electric engine is concentric to a support shaft of a supporting swing arm of the vehicle wheel, the influence of wheel bump on a tensioning state of a transmission belt is eliminated, and the operating stability of a belt transmission mechanism is guaranteed.

Description

A kind of wheel electric propulsion system
Technical field
The present invention relates to a kind of wheel electric propulsion system.
Background technology
Current society; Two problem demanding prompt solutions of face of mankind, one is energy problem, one is environmental protection problem; And these two problems all embody a concentrated reflection of the vehicle that become people's daily life part---on the automobile; Therefore, how can on automobile, utilize reproducible clean energy resource, minimizing energy resource consumption, reduction as much as possible even eliminate environment is polluted, become the target that people pursue.
Summary of the invention
To the demand that exists in the reality; Primary and foremost purpose of the present invention is to provide a kind of wheel electrical machine; This wheel electrical machine can be continuously to the automobile power-driven system electric energy supplement in the automobile driving process under situation about using as electrical generator, thereby reduces the consumption of automobile to extra power.
The present invention's purpose further is to provide a kind of wheel electric propulsion system that includes above-mentioned wheel electrical machine.
The present invention also provides a kind of application that the environmentally friendly vehicle of above-mentioned wheel electric propulsion system is arranged further.
For achieving the above object, technical scheme of the present invention is following:
A kind of wheel electrical machine comprises wheel hub, wheel rim, and wheel rim is provided with the good fortune plate that confession links to each other with axletree, and wheel rim axially is sleeved on the wheel hub in the outside from wheel hub; The wheel hub radially-outer surface is provided with the winding along its circumferential array, and the wheel rim inner radial surface is provided with the permanent magnet along its circumferential array, and said winding and said permanent magnet mate each other, constitutes the outer ring electric machine structure on wheel hub and the wheel rim thus; Wheel hub is provided with cooling-water duct, through this cooling-water duct to wheel hub and on winding cool off.
Further; Inside and outside directly upwards comprising at least, said wheel hub is nested and mutual concentric two-layer tubular ring flat-plate; Wherein said outer ring electric machine structure radially is separated by between the two adjacent ring flat-plates and is formed an opening surface thus to hub spindle annular deep trouth laterally between wheel hub outermost radial outside ring flat-plate and said wheel rim; Corresponding with the multilayer ring-plane structure on the wheel hub; Said web of rim be provided with it concentric and respectively with wheel hub middle part ring flat-plate sleeve one to one radially; This sleeve is when wheel rim is sleeved on the wheel hub; Unsettled one by one insertion wheel hub radially in the annular deep trouth of middle part between the adjacent in twos ring flat-plate, is provided with the permanent magnet along its circumferential array on each sleeve inner radial surface, is provided with the winding along its circumferential array on each wheel hub middle part ring flat-plate radially-outer surface; Permanent magnet on each sleeve all with radially inboard adjacent ring flat-plate separately on winding be complementary, and constitute the inner ring electric machine structure one by one on wheel hub and the wheel rim thus.
Further, said wheel hub directly upwards comprises two-layer tubular ring flat-plate, and is corresponding with it, and the good fortune plate of said wheel rim is provided with a sleeve, and wheel hub and wheel rim are provided with an outer ring electric machine structure and an inner ring electric machine structure.
Further, said cooling-water duct is the circular groove concentric with it that is provided with on the said wheel hub, is provided with cooling water pipeline in this circular groove.
Further, said cooling-water duct is the airtight torus section concentric with it that is provided with in the said wheel hub, is arranged at intervals with the intake-outlet that is connected with said airtight torus section on the wheelboss side wall.
Further, said circular groove is arranged on the said wheel hub on the outermost radial outside ring flat-plate, and the circular groove opening surface to hub spindle laterally.
Use a kind of wheel electric propulsion system of above-mentioned wheel electrical machine, comprise Computer Control Unit, rectifier, storage battery, wheel electrical machine, electric engine, wherein, Computer Control Unit control storage battery is an electric engine powered wheel; Wheel electrical machine is changed between electrical generator and electrical motor down in Computer Control Unit control, and as the outside output torque of driving engine the time, by Computer Control Unit control the direction of outside output torque; When wheel electrical machine during,, and pass through rectifier down to battery charge in Computer Control Unit control along with electric energy is outwards exported in the rotation of wheel as electrical generator; When wheel electrical machine as electrical motor and outwards during the moment of torsion of output and said electric engine equidirectional, accept the electric energy that storage battery provides down in Computer Control Unit control, with said electric engine drive wheels rotation; When wheel electrical machine is also outwards exported with the rightabout moment of torsion of said electric engine as electrical motor; Wheel electrical machine is accepted the electric energy that storage battery provides as electrical motor under Computer Control Unit control; Outwards export the moment of torsion opposite, for wheel provides braking force with said electric engine.
Further; Said wheel electrical machine is as electrical motor and outwards during the moment of torsion of output and said electric engine equidirectional; Said Computer Control Unit makes each wheel have different rotating speed through the electric energy of control to the different sizes of each wheel electrical machine input, to adapt to the curvilinear motion operation of vehicle.
Application has the environmentally friendly vehicle of above-mentioned wheel electric propulsion system; Comprise car body, wheel, electric engine, include said wheel electrical machine on the wheel, wherein; The wheel that directly links to each other with electric engine power is installed on the car body through swing arm; This wheel links to each other with swing arm one end, and the swing arm other end is rotatable to be installed on the pivot shaft that is provided with on the car body, and the output shaft that is installed in the electric engine on the car body links to each other through the axle drive shaft power of tape handler with the wheel that is positioned at swing arm one end; The output shaft of electric engine is concentric with the pivot shaft of said swing arm, also be provided with on the car body with wheel electrical machine on the cooling water circulating device that joins of cooling-water duct.
Further, the driving band in the said tape handler is to be with synchronously, and tape handler also is provided with tension wheel, and this tension wheel is installed on the pivot shaft that is provided with in the said swing arm.
Wheel electrical machine of the present invention not only can be the automobile electric energy supplement in the automobile driving process; Reduce the consumption of automobile to extra power; And can to convert electric engine easily to be that automobile provides onward impulse or braking force is provided; Improve the handling of automobile, also have simple in structure, compact characteristics simultaneously.
Wheel electric propulsion system provided by the invention is through obtaining energy from the wheel that rotates; And give the motorcar electric engine with energy supplement; Further improve the degree of utilization of clean energy resource on automobile, reduced the automobile consumption of the energy to external world, improved the environmental-protecting performance of automobile; After particularly wheel electrical machine of the present invention being used as electric engine, the direction through changing its output torque and control its output speed has improved the handling of automobile greatly.
Environmentally friendly vehicle provided by the invention makes electric engine link to each other with wheel power through adopting tape handler; And the output shaft that makes electric engine simultaneously and wheel support the pivot shaft of swing arm concentric after; Eliminated wheel and jolted, kept the constant of driving band tensile force, guaranteed the stability of tape handler work the influence of driving band tensioning state; Simultaneously, also reduced noise in the transmission device working process.
Description of drawings
Fig. 1 is a wheel electrical machine section structure scheme drawing of the present invention;
Fig. 2 is wheel hub released state figure shown in wheel rim shown in Fig. 1 sequence number 1 and the sequence number 2;
Fig. 3 is a wheel electrical machine part sectional structure scheme drawing of the present invention;
Fig. 4 is a wheel electrical machine stereoscopic-state scheme drawing 1 of the present invention;
Fig. 5 is a wheel electrical machine stereoscopic-state scheme drawing 2 of the present invention;
Fig. 6 is a wheel electric propulsion system principle schematic of the present invention;
Fig. 7 is environmentally friendly vehicle electric engine of the present invention and transmission position local structure scheme drawing thereof;
Fig. 8 is Fig. 7 position detailed structure scheme drawing.
Mark among the figure: 1 wheel rim, 2 wheel hubs, 3 outer ring windings, 4 outer ring permanent magnets, 5 inner ring windings, 6 inner ring permanent magnets; 7 cooling-water ducts, 8 bearings, 9 electric engines, 10 Computer Control Units, 11 rectifiers/voltage regulator, 12 storage batterys; 13 wheel speed sensors, 14 on off controllers, 15 wheel cables, 16 electric engine cables, 17 storage battery cables, 18 storage battery sensor cables; 19 current control lines, 20 Engine Speed Sensor cables, 21 wheel speed sensor cables, 35 on off controller cables, 23 swing arms, 24 driving bands; 25 belt pulleys, 26 swing arm pivot shafts, 27 axletrees, 28 hold-down arms, 29 tension wheels, 30 wheel rim good fortune plates; 31 good fortune plate upper bushes, 32 wheel hubs are outer ring plate radially, and 33 wheel hubs are inner ring plate radially, 34 annular deep trouths, 35 wheels.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
In the wheel electrical machine of the present invention of Fig. 1-shown in Figure 5; Inside and outside upwards comprising, wheel hub 2 footpaths are nested and mutual concentric two-layer tubular ring flat- plate 32,33; Wherein radially internal layer ring flat-plate 33 constitutes the axle sleeve that wheel hub 2 links to each other with the axletree (not shown) simultaneously, is provided with bearing 8 in it in the hole; The two-layer ring flat-plate of wheel hub 2 32, radially be separated by between 33 and form an opening surface thus to the axial annular deep trouth 34 in the outside of wheel hub 2.Wheel rim 1 axially is sleeved on the wheel hub 2 in the outside from wheel hub 2; The good fortune plate 30 of wheel rim 1 is provided with sleeve 31 towards wheel hub 2 one side surfaces; This sleeve 31 unsettledly is inserted into two-layer ring flat-plate 32 on the wheel hub 2, between 33 in the formed annular deep trouth 34 when wheel rim 1 cover installs to wheel hub 2.The radially-outer surface of wheel hub 2 radial outside ring flat-plates 32 is provided with the winding 3 along its circumferential array, and the radially-outer surface of radially inboard ring flat-plate 33 is provided with the winding 5 along its circumferential array; Wheel rim 1 inner radial surface is provided with the permanent magnet 4 along its circumferential array, and the inner radial surface of the sleeve 31 on its good fortune plate 30 is provided with the permanent magnet 6 along its circumferential array; Permanent magnet 4 and winding 3 are complementary, and constitute the outer ring electric machine structure on wheel hub 2 and the wheel rim 1, and permanent magnet 6 is complementary with winding 5, constitute the inner ring electric machine structure on wheel hub 2 and the wheel rim 1.In order to make the outer ring winding 3 on the wheel hub 2 good with 5 heat radiations of inner ring winding; Guarantee Internal and external cycle motor normal operation; Wheel hub 2 also is provided with the annular cooling water passage 7 of opening surface to its axial outside on its radial outside ring flat-plate 32; And through in this cooling-water duct 7 the recirculated cooling water pipeline being set, realize to wheel hub 2 and on effective cooling of winding 3,5.
Under the enough situation of firm power, also the outer ring electric machine structure can only be set between wheel hub 2 and the wheel rim 1.Certainly; In order to improve the total power of wheel electrical machine; Except being installed, aforesaid way is provided with two groups of electric machine structures of Internal and external cycle between wheel hub 2 and the wheel rim 1; Can also radially more ring flat-plate be set the middle part at wheel hub 2, and simultaneously at the ring flat-plate sleeve one to one that is provided with on the good fortune plate of wheel rim 1 on more and the wheel hub 2, so as between wheel hub 2 and wheel rim 1 the formation first inner ring electric machine structure, the second inner ring electric machine structure, the 3rd inner ring electric machine structure ...Under the situation that the electric machine structure that is provided with between wheel hub 2 and the wheel rim 1 increases, good in order to guarantee wheel hub 2 and to go up the winding heat radiation, wheel hub 2 can also radially be provided with cooling-water duct on the ring flat-plate at middle part at it.
The circular groove that above-mentioned cooling-water duct 7 just is provided with on wheel hub 2; Finally to realize cooling in circular groove through the recirculated cooling water pipeline is set to wheel hub 2 and winding thereof; When making under its situation that forms a closed channel through capping is set at the circular groove opening part; Then can directly in closed channel, feed recirculated cooling water and realize cooling, at this moment, only need on wheel hub 2, to be provided with the intake-outlet that joins with extraneous recirculating cooling water system and get final product wheel hub 2.
Shown in Figure 6 is wheel electric propulsion system principle schematic of the present invention; This system comprises Computer Control Unit 10, rectifier/voltage regulator 11, storage battery 12, four wheel electrical machines, two electric engines 9, and total system is started by the on off controller 14 that is connected to Computer Control Unit 10 through control line 22.Computer Control Unit 10 control voltage regulators 11 and cable 16 utilize the electric energy of storage battery 12 to drive electric engine 9 work.
Four wheel electrical machines can be changed between electrical generator and electrical motor under Computer Control Unit 10 controls.
When wheel electrical machine carried out work as electrical generator, along with wheel rotates under the driving of electric engine 9, wheel electrical machine produced electric energy, and through cable 15 continuously with the electric energy input rectifier 11 that is produced.Computer Control Unit 10 obtains energy information detailed in the rectifier 11 through current control line 19, when wheel electrical machine produces enough electric energy, promptly controls rectifier 11 and charges to storage battery 12 through cable 17.
When wheel electrical machine carries out work as electrical motor; Can and outwards export and the identical moment of torsion of electric engine 9 directions under Computer Control Unit 10 controls; At this moment wheel electrical machine is accepted the electric energy that storage battery 12 provides as electric engine under Computer Control Unit 10 controls, rotates with electric engine 9 drive wheels.In Computer Control Unit 10 control down, wheel electrical machine also can outwards be exported the moment of torsion in the opposite direction with electric engine 9, at this moment is that wheel electrical machine capable of using is that wheel provides braking force, comes the brake wheel rotation.
In the electric engine 9 drive wheels rotation processes; Computer Control Unit 10 obtains the accurate rotating speed that wheel reaches the electric engine that is associated with it at any time through wheel speed sensor 13, Engine Speed Sensor (not shown) and cable 20,21; If necessary; Computer Control Unit 10 can control respectively the rotating speed of each wheel, to adapt to the curvilinear motion of vehicle through to the different electric energy of each electric engine 9 input.
Referring to Fig. 6,7,8; The present invention uses the environmentally friendly vehicle that above-mentioned wheel electric propulsion system is arranged; Comprise the car body (not shown), four wheels 35 that comprise wheel electrical machine of the present invention are installed on the car body, wherein two trailing wheels 35 directly link to each other with electric engine 9 power.Two trailing wheels 35 are installed on the car body through swing arm 23, and swing arm 23 1 ends link to each other with wheel 35, and its other end is rotatable to be installed on the pivot shaft 26 that is provided with on the car body, also is provided with hold-down arm 28 between swing arm 23 and the car body.The output shaft that is installed in the electric engine 9 on the car body links to each other with axle drive shaft 27 power of the wheel 35 that is positioned at swing arm 23 1 ends through the tape handler that has synchronously with 24, belt pulley 25 constitutes; The output shaft of electric engine 9 is concentric with the pivot shaft 26 of swing arm 23; In order to guarantee to be with 24 reliable operations synchronously, also be provided with synchronous belt tensioner pulley 29 in the swing arm 23.Certainly, in order to make the wheel electrical machine stable operation on the wheel 35, also be provided with corresponding cooling water circulating device (not shown) on the car body.
The output shaft of electric engine 9 is provided with the pivot shaft of swing arm 23 is concentric; And after being arranged on tension wheel 29 in the swing arm 23 simultaneously; When vehicle ' arrived uneven road surface, no matter how wheel 35 relative car bodies are swung, the spacing between electric engine 9 output shafts and the wheel drive shaft remained constant; Constant all the time with 24 tensioning state synchronously, thereby eliminated the influence of road surface of jolting to electric engine 9 work.
Between electric engine 9 and wheel 35, adopt tape handler to carry out power and link to each other, under the pulsation-free situation that guarantees transmission, the noise that can reduce transmission device to greatest extent and produced, reduction is to the noise pollution of surrounding environment.
The above-mentioned specific embodiment is an example of the present invention, should not be construed as qualification of the present invention.

Claims (8)

1. a wheel electric propulsion system is characterized in that, comprises Computer Control Unit, rectifier, storage battery, wheel electrical machine, electric engine, and wherein, Computer Control Unit control storage battery is an electric engine powered wheel; Wheel electrical machine is changed between electrical generator and electrical motor down in Computer Control Unit control, and as the outside output torque of driving engine the time, by Computer Control Unit control the direction of outside output torque; When wheel electrical machine during,, and pass through rectifier down to battery charge in Computer Control Unit control along with electric energy is outwards exported in the rotation of wheel as electrical generator; When wheel electrical machine as electrical motor and outwards during the moment of torsion of output and said electric engine equidirectional, accept the electric energy that storage battery provides down in Computer Control Unit control, with said electric engine drive wheels rotation; When wheel electrical machine is also outwards exported with the rightabout moment of torsion of said electric engine as electrical motor; Wheel electrical machine is accepted the electric energy that storage battery provides as electrical motor under Computer Control Unit control; Outwards export the moment of torsion opposite, for wheel provides braking force with said electric engine.
2. wheel electric propulsion system as claimed in claim 1; It is characterized in that; Said wheel electrical machine is as electrical motor and outwards during the moment of torsion of output and said electric engine equidirectional; Said Computer Control Unit makes each wheel have different rotating speed through the electric energy of control to the different sizes of each wheel electrical machine input, to adapt to the curvilinear motion operation of vehicle.
3. wheel electric propulsion system as claimed in claim 1 is characterized in that said wheel electrical machine comprises wheel hub, wheel rim, and wheel rim is provided with the good fortune plate that confession links to each other with axletree, and wheel rim axially is sleeved on the wheel hub in the outside from wheel hub; It is characterized in that; Said wheel hub radially-outer surface is provided with the winding along its circumferential array; Said wheel rim inner radial surface is provided with the permanent magnet along its circumferential array, and said winding and said permanent magnet mate each other, constitutes the outer ring electric machine structure on wheel hub and the wheel rim thus; Inside and outside directly upwards comprising at least, said wheel hub is nested and mutual concentric two-layer tubular ring flat-plate; Said web of rim be provided with it concentric and respectively with wheel hub middle part ring flat-plate sleeve one to one radially; Be provided with winding on each wheel hub middle part ring flat-plate radially-outer surface along its circumferential array; Permanent magnet on each sleeve all with radially inboard adjacent ring flat-plate separately on winding be complementary, and constitute the inner ring electric machine structure one by one on wheel hub and the wheel rim thus; Said wheel hub is provided with cooling-water duct, through this cooling-water duct to wheel hub and on winding cool off.
4. wheel electric propulsion system as claimed in claim 3; It is characterized in that; Said outer ring electric machine structure radially is separated by between the two adjacent ring flat-plates and is formed an opening surface thus to hub spindle annular deep trouth laterally between wheel hub outermost radial outside ring flat-plate and said wheel rim; Corresponding with the multilayer ring-plane structure on the wheel hub; This sleeve is when wheel rim is sleeved on the wheel hub; Unsettled one by one insertion wheel hub radially in the annular deep trouth of middle part between the adjacent in twos ring flat-plate, is provided with the permanent magnet along its circumferential array on each sleeve inner radial surface.
5. wheel electric propulsion system as claimed in claim 4; It is characterized in that said wheel hub directly upwards comprises two-layer tubular ring flat-plate, and is corresponding with it; The good fortune plate of said wheel rim is provided with a sleeve, and wheel hub and wheel rim are provided with an outer ring electric machine structure and an inner ring electric machine structure.
6. wheel electric propulsion system as claimed in claim 3 is characterized in that, said cooling-water duct is the circular groove concentric with it that is provided with on the said wheel hub, is provided with cooling water pipeline in this circular groove.
7. wheel electric propulsion system as claimed in claim 3 is characterized in that, said cooling-water duct is the airtight torus section concentric with it that is provided with in the said wheel hub, is arranged at intervals with the intake-outlet that is connected with said airtight torus section on the wheelboss side wall.
8. wheel electric propulsion system as claimed in claim 5; It is characterized in that; Said cooling-water duct is the circular groove concentric with it that is provided with on the said wheel hub; This circular groove is arranged on the said wheel hub on the outermost radial outside ring flat-plate, and the circular groove opening surface is provided with cooling water pipeline to hub spindle laterally in the circular groove.
CN201210273887.2A 2008-12-09 2008-12-09 Electric drive system for vehicle wheel Expired - Fee Related CN102774271B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210273887.2A CN102774271B (en) 2008-12-09 2008-12-09 Electric drive system for vehicle wheel

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Application Number Priority Date Filing Date Title
CN201210273887.2A CN102774271B (en) 2008-12-09 2008-12-09 Electric drive system for vehicle wheel

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN 200810182617 Division CN101417607B (en) 2008-12-09 2008-12-09 Vehicle wheel motor and use thereof

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CN102774271A true CN102774271A (en) 2012-11-14
CN102774271B CN102774271B (en) 2015-04-22

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103516154A (en) * 2013-07-11 2014-01-15 王子齐 Multifunctional super-powerful permanent-magnet drive motor with automatic torque increase and decrease function, power generation function and charging function
CN105811693A (en) * 2014-12-31 2016-07-27 杭州磁控科技有限公司 Extended range electric vehicle and driving, braking and electric energy supplement method thereof
CN105990981A (en) * 2015-02-05 2016-10-05 刘粤荣 Pedal-controlled electric apparatus, electric vehicle, and method of driving, braking and range extending of the same
CN106981962A (en) * 2016-07-15 2017-07-25 王子齐 Magnetic suspension high-efficiency multi-function magneto
JP2019202570A (en) * 2018-05-21 2019-11-28 Ntn株式会社 Power device for vehicle and wheel bearing with electric generator

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Publication number Priority date Publication date Assignee Title
CN2153486Y (en) * 1993-06-30 1994-01-19 北京市西城区新开通用试验厂 Digital control full speed car with electric transmission device
CN1096985A (en) * 1993-06-30 1995-01-04 北京市西城区新开通用试验厂 A kind of numerically controlled power unit of electric car
CN1142069C (en) * 1999-12-21 2004-03-17 李春晓 Integrated drive motor-electric generator unit installed to wheel of electric vehicle
CN2567127Y (en) * 2002-09-06 2003-08-20 周建明 Motorcycle with battery and electric diving device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103516154A (en) * 2013-07-11 2014-01-15 王子齐 Multifunctional super-powerful permanent-magnet drive motor with automatic torque increase and decrease function, power generation function and charging function
CN103516154B (en) * 2013-07-11 2016-03-16 王子齐 Automatically increase or decrease the superpower super drive motors of power moment of torsion generating-charging multifunctional permanent-magnet
CN105811693A (en) * 2014-12-31 2016-07-27 杭州磁控科技有限公司 Extended range electric vehicle and driving, braking and electric energy supplement method thereof
CN105990981A (en) * 2015-02-05 2016-10-05 刘粤荣 Pedal-controlled electric apparatus, electric vehicle, and method of driving, braking and range extending of the same
CN106981962A (en) * 2016-07-15 2017-07-25 王子齐 Magnetic suspension high-efficiency multi-function magneto
CN106981962B (en) * 2016-07-15 2024-05-07 王子齐 Magnetic suspension high-efficiency multifunctional permanent magnet motor
JP2019202570A (en) * 2018-05-21 2019-11-28 Ntn株式会社 Power device for vehicle and wheel bearing with electric generator
WO2019225522A1 (en) * 2018-05-21 2019-11-28 Ntn株式会社 Vehicle power unit and vehicle wheel bearing with generator
JP7066520B2 (en) 2018-05-21 2022-05-13 Ntn株式会社 Bearings for vehicle power units and wheels with generators
US11990822B2 (en) 2018-05-21 2024-05-21 Ntn Corporation Vehicle power unit and vehicle wheel bearing with generator

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Granted publication date: 20150422