CN104827887A - Electric wheel for automobile - Google Patents
Electric wheel for automobile Download PDFInfo
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- CN104827887A CN104827887A CN201510286630.4A CN201510286630A CN104827887A CN 104827887 A CN104827887 A CN 104827887A CN 201510286630 A CN201510286630 A CN 201510286630A CN 104827887 A CN104827887 A CN 104827887A
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Abstract
The invention belongs to the technical field of automobiles, and discloses an electric wheel for an automobile. The electric wheel is composed of a tire, a rim and an external rotor motor, and is characterized in that a motor rotor is directly arranged on the inner wall of the rim, a motor end cover is fixedly connected with the rim, a motor stator is arranged on in the motor rotor, a center shaft of the motor stator and the motor end cover are assembled through a bearing, a brake disc is arranged on the motor end cover on the inner side of the wheel, and the end, corresponding to the inner side of the wheel, of the center shaft of the motor stator is fixed relative to an automobile suspension. The electric wheel is improved and designed on the basis of an existing hub motor, the structure of the wheel is improved, and the motor and the wheel are combined together. The motor rotor and the tire share the rim, and the overall structure is greatly simplified.
Description
Technical field
The invention belongs to automobile technical field, relate to the technology that is in transmission connection of electric powered motor technology and power system and wheel.
Background technology
Common power system of electric automobile is made up of motor, retarder, diff, axle drive shaft, retarder mouth connected with differential, and diff two mouth connects axle drive shaft respectively, and axle drive shaft connects wheel.The power system architecture of this routine and the power system architecture of fuel-engined vehicle substantially close, all need to coordinate the driving system such as diff, transmission shaft to use.Technology is backwardness relatively, complex structure, and waste of power is large.
As improvement, in recent years propose a kind of wheel hub motor technology, under wheel hub motor technology, arrange drive motor respectively for single wheel, a motor drives separately a wheel.Motor is installed on inside wheel, is positioned at wheel rim inside.Motor is relative with suspension fixing, and the spoke of wheel is connected by retarder with rotor, or spoke is directly fixed with the bracket of rotor and assembled.Based on this wheel hub motor technology, motor does not independently take space, chassis, is to simplify chassis structure, and on chassis, installs more high capacity cell provide condition.In addition, motor and wheel no longer need the transmission device such as diff, transmission shaft to be connected.Power system structure is simplified, and kinetic equation loss effectively reduces.
But existing wheel hub motor and wheel relatively independent, wheel still adopts conventional wheel rim, and wheel and motor still exist the annexation that direct-connected or retarder is connected indirectly between the two, be not integrated into one, structure still has certain complexity.
Summary of the invention
The object of the invention is, for the still comparatively complicated problem of existing hub motor structure, to provide a kind of integrated level higher, and the more simple electric-powered mechanism of structure, and several actv. motor cooling scheme is provided further.
For achieving the above object, the technical solution adopted in the present invention is: a kind of automobile electrical motor car wheel, be made up of tire, wheel rim and external rotor electric machine, it is characterized in that, rotor is set directly on wheel rim inwall, and electric motor end cap is fixedly connected with wheel rim, motor stator is located in rotor, motor stator axis and electric motor end cap are by bearing assemble, and brake disc is arranged on the electric motor end cap inside wheel, and the one end inside the corresponding wheel of motor stator axis is relative with automotive suspension fixing.
Further, be the face of cylinder inside wheel rim, step groove is established at two ends, the face of cylinder, and two end cap outer rims of motor coordinate with step groove, the contact surface press seal of electric motor end cap and step groove.
Bearing seat is established at electric motor end cap center, and the bearing seat outer end sealing on the electric motor end cap of lateral wheel, the bearing seat on the electric motor end cap inside wheel is through hole, establishes oil sealing between through hole outer end and motor stator axis.
In order to help motor radiating, described electric motor end cap can arrange louvre.
As improvement, as one more effective electric motor temperature reduction scheme: described electric wheel is established a set of wound oil cooling circuit through motor cavity.Cutting oil is passed through in loop.Oil inlet and oil outlet are all located at motor stator axis one end inside wheel.
Particularly, described motor stator axis hollow, near the one end open of lateral wheel, side sealing inside wheel, feed liquor (oil) mouth and fluid (oil) mouth are all located at electronics stator axis sealing end, gap location on motor stator axis axial wall inside corresponding motor stator and wheel between electric motor end cap is provided with a refrigerant fluid (oil) refluxing opening, and refrigerant fluid (oil) refluxing opening and fluid (oil) mouth are by pipeline communication.
Cutting oil is after therefrom axle sealing end oil inlet enters axis inner chamber under pressure, flow to axis open end, gap between axis open end and this side shaft holder and between bearing roller hole enter motor cavity, Clearance Flow through between motor stator and rotor is to the side of motor cavity inside wheel, enter the gap between electric motor end cap inside motor stator and wheel, the refrigerant fluid return port offered from motor stator axis axial wall again enters oil pipe, finally flow out from liquid outlet, form a complete wound oil cooling circuit.Such cooling loop can realize comprehensive cooling of stator to motor, rotor, and cooling performance is good.
After considering that cutting oil enters motor cavity, resistance is formed to the rotation of rotor, cause waste of power, and consider that the oily medium of employing carries out the cooling performance comparatively water cooling less effective cooled, as improvement, heat transfer ratio is adopted better not have the refrigerant fluid of lubricious effect as cooling media.The present invention also proposes another kind of water cooling labyrinth structure.
Be specially: inlet and liquid outlet are all located at motor stator axis sealing end.At electric motor end cap and wheel rim inside, many cooling-gallerys are set.Every bar cooling-gallery plays end entrance and is positioned on the bearing seat sidewall of the electric motor end cap of lateral wheel, cooling-gallery end outlet is positioned on the bearing seat sidewall of the electric motor end cap inside wheel, motor stator axis open end bearing and cooling-gallery rise between end entrance and are separated by oil sealing, are separated between motor stator axis sealing end bearing and cooling-gallery end outlet by oil sealing; On motor stator axis axial wall, corresponding cooling-gallery end outlet place establishes refrigerant fluid refluxing opening, and refrigerant fluid refluxing opening and liquid outlet are by pipeline communication.
The cooling loop of above-mentioned improvement is isolated with bearing and motor cavity, refrigerant fluid not contact need lubrication bearing, cooling media can select cooling water expansion tank, and relative oil cooling effect is better.Refrigerant fluid does not also enter motor cavity, can avoid causing corrosion to coil of stator of motor and rotor iron yoke and stator core, it also avoid refrigerant fluid and forms resistance to the rotation of rotor.The cooling loop of this improvement adds the cooling heat dissipation of speed motor from the angle of lowering the temperature to electric machine casing.This modified node method, can also coordinate louvre to dispel the heat, to increase cooling heat dissipation effect further.Particularly: on electric motor end cap, establish louvre.
Further, many cooling-gallerys circumference centered by motor stator axis is uniformly distributed.
Further, cooling-gallery is wide flat passage.
In order to simplified structure, also can consider, only to rotor cooling, to reach certain cooling performance.Specifically there is several scheme, as follows respectively:
Scheme one, described motor stator axis hollow, sealing two ends, inlet and liquid outlet are established in one end inside wheel, inlet connects a drain pipeline, drain pipeline therefrom axle one end inside wheel extends to the one end near lateral wheel, and drain pipeline end outlet is positioned at its axis inner chamber top.Liquid outlet is located at axis sealing end bottom.Fluid dielectric coolant can select oily medium or aqueous medium.
Scheme two, described motor stator axis hollow, near the one end open of lateral wheel, side sealing inside wheel, inlet and liquid outlet are all located at electronics stator axis sealing end, inlet connects a drain pipeline, and drain pipeline therefrom axle sealing end extends to open end, and drain pipeline end outlet is positioned at axis inner chamber top.Liquid outlet is located at axis sealing end bottom.Oil sealing is established outside axis open end bearing.Similarly, fluid dielectric coolant can select oily medium or aqueous medium.
Scheme three, described motor stator axis hollow, near the one end open of lateral wheel, side sealing inside wheel, inlet and liquid outlet are all located at electronics stator axis sealing end, inlet connects a drain pipeline, and drain pipeline therefrom axle sealing end extends to open end, and drain pipeline end outlet is positioned at axis inner chamber top.Liquid outlet is located at axis sealing end bottom.Oil sealing is established inside axis open end bearing.Because of refrigerant fluid meeting contact bearing, so fluid dielectric coolant need select oily medium.
The present invention has carried out Curve guide impeller on existing wheel hub motor basis, improves car wheel structure, by motor together with incorporated in vehicle wheels.Rotor and tire share wheel rim, and integral structure is greatly simplified.Provide the cooling scheme that a few cover is effective and feasible simultaneously, solve the motor feels hot problem.
Accompanying drawing explanation
Fig. 1 is electric vehicle wheels arrangement principle schematic of the present invention.
Fig. 2 is electric wheel electric motor end cap louvre structural representation of the present invention.
Fig. 3 is a kind of cooling scheme principle schematic of electric wheel of the present invention.
Fig. 4 is the another kind of cooling scheme principle schematic of electric wheel of the present invention.
Fig. 5 is the structural representation electric motor end cap of electric wheel shown in Fig. 4 being arranged cooling-gallery.
Fig. 6 is the one simple stator cooling scheme principle schematic of electric wheel of the present invention.
Fig. 7 is the another kind simple stator cooling scheme principle schematic of electric wheel of the present invention.
Fig. 8 is the another kind simple stator cooling scheme principle schematic of electric wheel of the present invention.
Detailed description of the invention
With reference to Fig. 1-2, automobile electrical motor car wheel disclosed by the invention, comprises tire 1, wheel rim 2 and external rotor electric machine, and described external rotor electric machine comprises outer ring annular generator rotor 4, with the motor stator 5 be arranged in rotor, and with assembling the electric motor end cap 8,9 of rotor and stator.In the present invention, be the face of cylinder inside wheel rim 2, step groove is established at two ends, the face of cylinder, and two end caps 8,9 outer rim of motor coordinates with step groove, contact surface 3 press seal of electric motor end cap and step groove.Rotor 4 is set directly on wheel rim 2 inwall, motor stator 5 is located in rotor 4, motor stator axis 13 and electric motor end cap are assembled by bearing 7, brake disc 10 is arranged on the electric motor end cap 9 inside wheel, and the one end inside the corresponding wheel of motor stator axis 13 is relative with automotive suspension fixing.Bearing seat 6 is established at electric motor end cap center, and sealing door 12 is established in the bearing seat outer end on the electric motor end cap of lateral wheel, and the bearing seat left and right on the electric motor end cap inside wheel is through, establishes oil sealing 11 outside bearing.Described electric motor end cap is provided with louvre 14.
With reference to Fig. 3, the axis 13 of motor stator described in this example hollow, motor stator axis 13 left end opening, right-hand member seals, the sealing end of motor stator axis 13 establishes inlet 18 and liquid outlet 17, gap on the axial wall of motor stator axis 13 between corresponding motor stator 5 and right motor end cap 9 is provided with refrigerant fluid refluxing opening 15, and refrigerant fluid refluxing opening 15 is communicated with by pipeline 16 with liquid outlet 17.
With reference to Fig. 4-5, motor stator axis 13 right-hand member seals, and left end opening, motor stator axis right-hand member establishes inlet 18 and liquid outlet 17.At electric motor end cap and wheel rim inside, many cooling-gallerys 19 are set.Many cooling-gallerys 19 circumference centered by motor stator axis is uniformly distributed.Every bar cooling-gallery plays end entrance and is positioned on the bearing seat sidewall of the electric motor end cap 8 of lateral wheel, cooling-gallery end outlet is positioned on the bearing seat sidewall of the electric motor end cap 9 inside wheel, motor stator axis 13 open end bearing and cooling-gallery rise between end entrance and are separated by oil sealing 20, are separated between the sealing end bearing of motor stator axis 13 and cooling-gallery end outlet by oil sealing 21; On motor stator axis axial wall, corresponding cooling-gallery end outlet place establishes refrigerant fluid refluxing opening 15, and refrigerant fluid refluxing opening 15 is communicated with by pipeline 16 with liquid outlet 17.
With reference to Fig. 6, described motor stator axis hollow, sealing two ends, inlet and liquid outlet are established in one end inside wheel, inlet connects a drain pipeline 22, drain pipeline therefrom axle one end inside wheel extends to the one end near lateral wheel, and drain pipeline 22 end outlet is positioned at its axis inner chamber top.Liquid outlet is located at axis sealing end bottom.
With reference to Fig. 7, described motor stator axis hollow, near the one end open of lateral wheel, side sealing inside wheel, inlet and liquid outlet are all located at electronics stator axis sealing end, inlet connects drain pipeline 22, and drain pipeline 22 therefrom axle sealing end extends to open end, and drain pipeline end outlet is positioned at axis inner chamber top.Liquid outlet is located at axis sealing end bottom.Oil sealing 23 is established outside axis open end bearing.
With reference to Fig. 8, described motor stator axis hollow, near the one end open of lateral wheel, side sealing inside wheel, inlet and liquid outlet are all located at electronics stator axis sealing end, inlet connects drain pipeline 22, and drain pipeline 22 therefrom axle sealing end extends to open end, and drain pipeline end outlet is positioned at axis inner chamber top.Liquid outlet is located at axis sealing end bottom.Oil sealing 24 is established inside axis open end bearing.
Claims (10)
1. an automobile electrical motor car wheel, be made up of tire, wheel rim and external rotor electric machine, it is characterized in that, rotor is set directly on wheel rim inwall, electric motor end cap is fixedly connected with wheel rim, and motor stator is located in rotor, and motor stator axis and electric motor end cap pass through bearing assemble, brake disc is arranged on the electric motor end cap inside wheel, and the one end inside the corresponding wheel of motor stator axis is relative with automotive suspension fixing.
2. automobile electrical motor car wheel according to claim 1, is characterized in that, be the face of cylinder inside wheel rim, step groove is established at two ends, the face of cylinder, and two end cap outer rims of motor coordinate with step groove, the contact surface press seal of electric motor end cap and step groove.
3. automobile electrical motor car wheel according to claim 1, it is characterized in that, bearing seat is established at electric motor end cap center, bearing seat outer end sealing on the electric motor end cap of lateral wheel, bearing seat on electric motor end cap inside wheel is through hole, establishes oil sealing between through hole outer end and motor stator axis.
4. automobile electrical motor car wheel according to claim 3, is characterized in that, a set of wound oil cooling circuit through motor cavity established by this wheel, and by cutting oil in loop, oil inlet and oil outlet are all located at motor stator axis one end inside wheel.
5. automobile electrical motor car wheel according to claim 4, it is characterized in that, described motor stator axis hollow, near the one end open of lateral wheel, side sealing inside wheel, oil inlet and oil outlet are all located at electronics stator axis sealing end, and the gap location on motor stator axis axial wall inside corresponding motor stator and wheel between electric motor end cap is provided with a return opening, and return opening and oil outlet are by pipeline communication.
6. automobile electrical motor car wheel according to claim 3, is characterized in that, described motor stator axis hollow, near the one end open of lateral wheel, and the side sealing inside wheel, inlet and liquid outlet are all located at motor stator axis sealing end; At electric motor end cap and wheel rim inside, many cooling-gallerys are set, every bar cooling-gallery plays end entrance and is positioned on the bearing seat sidewall of the electric motor end cap of lateral wheel, cooling-gallery end outlet is positioned on the bearing seat sidewall of the electric motor end cap inside wheel, motor stator axis open end bearing and cooling-gallery rise between end entrance and are separated by oil sealing, are separated between motor stator axis sealing end bearing and cooling-gallery end outlet by oil sealing; On motor stator axis axial wall, corresponding cooling-gallery end outlet place establishes refrigerant fluid refluxing opening, and refrigerant fluid refluxing opening and liquid outlet are by pipeline communication.
7. automobile electrical motor car wheel according to claim 6, is characterized in that, many cooling-gallerys circumference centered by motor stator axis is uniformly distributed.
8. the automobile electrical motor car wheel according to claim 1 or 6, is characterized in that, described electric motor end cap is provided with louvre.
9. automobile electrical motor car wheel according to claim 1, it is characterized in that, described motor stator axis hollow, sealing two ends, inlet and liquid outlet are established in the one end inside wheel, and inlet connects a drain pipeline, drain pipeline therefrom axle one end inside wheel extends to the one end near lateral wheel, drain pipeline end outlet is positioned at its axis inner chamber top, and liquid outlet is located at axis sealing end bottom, and fluid dielectric coolant selects oily medium or aqueous medium.
10. automobile electrical motor car wheel according to claim 3, it is characterized in that, described motor stator axis hollow, near the one end open of lateral wheel, side sealing inside wheel, inlet and liquid outlet are all located at electronics stator axis sealing end, inlet connects a drain pipeline, drain pipeline therefrom axle sealing end extends to open end, drain pipeline end outlet is positioned at axis inner chamber top, liquid outlet is located at axis sealing end bottom, and establish oil sealing outside axis open end bearing, fluid dielectric coolant selects oily medium or aqueous medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510286630.4A CN104827887A (en) | 2015-05-30 | 2015-05-30 | Electric wheel for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510286630.4A CN104827887A (en) | 2015-05-30 | 2015-05-30 | Electric wheel for automobile |
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| Publication Number | Publication Date |
|---|---|
| CN104827887A true CN104827887A (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510286630.4A Pending CN104827887A (en) | 2015-05-30 | 2015-05-30 | Electric wheel for automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109562684A (en) * | 2016-08-02 | 2019-04-02 | 施乐百有限公司 | Hub drive device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005337355A (en) * | 2004-05-26 | 2005-12-08 | Honda Motor Co Ltd | Wheel drive mechanism for vehicle |
| US20060137926A1 (en) * | 2004-12-28 | 2006-06-29 | Denso Corporation | Electrically motorized wheel with protective cover |
| CN101400537A (en) * | 2006-03-15 | 2009-04-01 | 高桥幸男 | Linear drive travel system and vehicle |
| CN102044932A (en) * | 2009-10-13 | 2011-05-04 | 鲁泊凡 | Hub motor with multiple setting modes of rim and braking device |
| CN102275499A (en) * | 2011-05-10 | 2011-12-14 | 隗俊 | Eccentric sealed wheel-driving electric wheel |
| CN204623116U (en) * | 2015-05-30 | 2015-09-09 | 谷伟 | A kind of automobile electrical motor car wheel |
-
2015
- 2015-05-30 CN CN201510286630.4A patent/CN104827887A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005337355A (en) * | 2004-05-26 | 2005-12-08 | Honda Motor Co Ltd | Wheel drive mechanism for vehicle |
| US20060137926A1 (en) * | 2004-12-28 | 2006-06-29 | Denso Corporation | Electrically motorized wheel with protective cover |
| CN101400537A (en) * | 2006-03-15 | 2009-04-01 | 高桥幸男 | Linear drive travel system and vehicle |
| CN102044932A (en) * | 2009-10-13 | 2011-05-04 | 鲁泊凡 | Hub motor with multiple setting modes of rim and braking device |
| CN102275499A (en) * | 2011-05-10 | 2011-12-14 | 隗俊 | Eccentric sealed wheel-driving electric wheel |
| CN204623116U (en) * | 2015-05-30 | 2015-09-09 | 谷伟 | A kind of automobile electrical motor car wheel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109562684A (en) * | 2016-08-02 | 2019-04-02 | 施乐百有限公司 | Hub drive device |
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Application publication date: 20150812 |