CN102624117A - Oil internal-cooling high-power density hub permanent magnet motor for electric vehicle - Google Patents
Oil internal-cooling high-power density hub permanent magnet motor for electric vehicle Download PDFInfo
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- CN102624117A CN102624117A CN2012100967025A CN201210096702A CN102624117A CN 102624117 A CN102624117 A CN 102624117A CN 2012100967025 A CN2012100967025 A CN 2012100967025A CN 201210096702 A CN201210096702 A CN 201210096702A CN 102624117 A CN102624117 A CN 102624117A
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- rear end
- end cover
- shaft
- oil
- contact position
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- 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
Abstract
The invention discloses an oil internal-cooling high-power density hub permanent magnet motor for an electric vehicle, which comprises a shaft. A front end cover and a rear end cover are respectively sleeved at the front and rear ends of the shaft; the front end cover and the rear end cover are respectively connected with the shaft by bearings; an outer rotor sleeve is fixedly connected between the front and rear end covers; a surface-mount magnetic steel is adhered inside the outer rotor sleeve; a stator bracket fixedly connected with the shaft is arranged between the front and rear end covers; a stator adopting a fractional-slot winding structure is arranged on the stator bracket; an oil charging hole is arranged on the front end cover; the contact position of the front end cover and the shaft is sealed in a labyrinth mode; and the contact positions of the front and rear end covers and the outer rotor sleeve, the contact position of the oil charging hole and a stopper and the contact position of the rear end cover and the shaft are sealed by rubber rings. According to the hub permanent magnet motor adopting the outer rotor structure, a great of transmission parts are saved, the vehicle has simpler structure and various complex driving modes can be implemented.
Description
Technical field
The present invention relates to a kind of inner-cooled high power density wheel hub magneto, particularly a kind of oil inner-cooling type motor type of cooling.
Background technology
Along with the continuous deterioration of world's natural environment, and fossil energy is in short supply, electric automobile be reduce fossil fuel relied on environmental pollution in, guarantee the human active path that moves flexibility and the sustainable development of realization automobile industry.At present, global automobile production amount and use amount are huge, and increase rapidly, and increasing environmental problem of face of mankind and lack of energy problem will face a severe challenge.Design and the automobile of researching and developing a kind of high-effect, environmental protection, safety are the only ways of realizing the traffic sustainable development.Electric energy will become the inexorable trend of future source of energy development as a kind of novel clean energy resource, and electric automobile also must replace the dominant force that traditional fuel-engined vehicle becomes the New Times.China has also obtained very big effect in the development in electric automobile field in recent years.
For wheel hub motor; Its maximum characteristics all are incorporated into power, transmission and brake apparatus in the wheel hub exactly; Therefore the mechanical part of motor vehicle is simplified greatly, reduced the power loss of bringing owing to vehicle transmission mechanism, speed-changing gear box etc., thereby improve the performance of car load.Yet, in motor design and practical application, a lot of problems that we can not ignore are arranged, like problems such as temperature rise, the power density of motor are little.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, provide a kind of in light weight, volume is little, simple and compact for structure, moment of inertia is little, the used for electric vehicle wheel hub magneto of cold but mode in the oil.
The present invention is achieved through following technical proposals:
Used for electric vehicle oil inner-cooling type high power density wheel hub magneto of the present invention; It comprises axle; Front and back ends at described axle is with front end housing, rear end cap respectively, and described front end housing, rear end cap are connected with described axle through bearing respectively, and the external rotor cover is fixedly connected between the described front and rear cover; In described external rotor cover, be pasted with the surface-mount type magnet steel; The stator support that is fixedly connected with described axle is installed between front and rear cover, the stator that adopts the fractional slot winding structure is housed on described stator support, on described front end housing, have oil filler point; Adopt labyrinth sealing in the described front end housing and the place of the synapsis that is coupling, in described forward and backward end cap and external rotor cover contact position, oil filler point and obstruction contact position and rear end cap and the synapsis that is coupling employing seal with elastometic washer.
The invention has the beneficial effects as follows: 1) adopt the wheel hub magneto of outer-rotor structure, omit the great number of driving parts, make vehicle structure simpler, can realize the type of drive of multiple complicacy, be convenient to adopt multiple new forms of energy driving skills art.2) adopt the fractional slot winding structure; Utilize its Equivalent Distributed effect and to the weakening effect of slot ripples back-emf; Improve potential waveform and the effect that improves winding utilization to reach; Shorten coil girth and end extension elongation simultaneously, reduce the low-loss of motor windings resistance drop, improve efficiency of motor and power density.3) the motor type of cooling of employing oil inner-cooling type effectively reduces the temperature rise of motor.4) solve the oil-filled sealing problem of cold mode motor internal in the oil.
Description of drawings
Fig. 1 is a used for electric vehicle oil inner-cooling type high power density wheel hub permanent magnet motor structure sketch map of the present invention;
Fig. 2 is the external rotor nested structure sketch map of motor of the present invention;
Fig. 3 is the left view of the present invention's motor shown in Figure 1;
Fig. 4 is the right view of the present invention's motor shown in Figure 1.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Shown in accompanying drawing; Used for electric vehicle oil inner-cooling type high power density wheel hub magneto of the present invention, it comprises axle 7, is with front end housing, rear end cap 1,2 respectively at described front and back ends; Be connected with described axle 7 through bearing 14 respectively at described front end housing, rear end cap; External rotor cover 3 is fixedly connected between the described front and rear cover, in described external rotor cover, is pasted with surface-mount type magnet steel 4, and the stator support 6 that is fixedly connected with described axle 7 is installed between the front and rear cover; The stator 5 that adopts the fractional slot winding structure is housed on described stator support; On described front end housing, have oil filler point 9, adopt labyrinth sealing 8, adopt seal with elastometic washer 11 at described forward and backward end cap and external rotor cover contact position in the described front end housing and the place of the synapsis that is coupling; Oil filler point adopts seal with elastometic washer with stopping up the contact position, and rear end cap adopts seal with elastometic washer 13 with the synapsis that is coupling.
Surface-mount type magnet steel 4 is affixed on the rotor external rotor and overlaps 3 surfaces in this motor, and motor outer rotor cover 3 and motor two end cap 1,2 are fixedly connected through screw 12, coaxial rotation, and outer end cap passes through screw 10 and is fixedly connected with the electric automobile wheel rim, with the driving electric automobile during traveling.The type of cooling of motor adopts in the oil cold, fills cooling oil at motor internal, when motor rotates; Because action of centrifugal force; Make oil be evenly distributed in motor internal, the heat of motor is conducted to shell, thereby distribute heat; Improve motor properties, also can prevent because the too high problems such as permanent magnet degaussing that cause of temperature rise simultaneously.
The encapsulation scheme of this wheel hub motor is labyrinth sealing and seal with elastometic washer and uses.Among Fig. 1, adopt seal with elastometic washer 11, rear end cap and the synapsis that is coupling to adopt seal with elastometic washer 13 at described forward and backward end cap and external rotor cover contact position.Annotate like conventional transformer with oil at oil filler point 9 places.Adopt seal with elastometic washer at oil filler point with stopping up the contact position, adopt labyrinth sealing 8, utilize oily frictional resistance effect and a fluid stream blockage effect to prevent leakage of oil in the described front end housing and the place of the synapsis that is coupling.
The type of cooling of the present invention is cold in the oil.The encapsulation scheme of oil is labyrinth sealing and rubber ring and uses.
Although combine accompanying drawing that the preferred embodiments of the present invention are described above; But the present invention is not limited to above-mentioned embodiment, and above-mentioned embodiment only is schematically, is not restrictive; Those of ordinary skill in the art is under enlightenment of the present invention; Not breaking away under the scope situation that aim of the present invention and claim protect, can also make a lot of forms, these all belong within protection scope of the present invention.
Claims (1)
1. used for electric vehicle oil inner-cooling type high power density wheel hub magneto; It comprises axle; Front and back ends at described axle is with front end housing, rear end cap respectively, and described front end housing, rear end cap are connected with described axle through bearing respectively, and the external rotor cover is fixedly connected between the described front and rear cover; It is characterized in that: in described external rotor cover, be pasted with the surface-mount type magnet steel; The stator support that is fixedly connected with described axle is installed between front and rear cover, the stator that adopts the fractional slot winding structure is housed on described stator support, on described front end housing, have oil filler point; Adopt labyrinth sealing in the described front end housing and the place of the synapsis that is coupling, in described forward and backward end cap and external rotor cover contact position, oil filler point and obstruction contact position and rear end cap and the synapsis that is coupling employing seal with elastometic washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100967025A CN102624117A (en) | 2012-04-01 | 2012-04-01 | Oil internal-cooling high-power density hub permanent magnet motor for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100967025A CN102624117A (en) | 2012-04-01 | 2012-04-01 | Oil internal-cooling high-power density hub permanent magnet motor for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102624117A true CN102624117A (en) | 2012-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100967025A Pending CN102624117A (en) | 2012-04-01 | 2012-04-01 | Oil internal-cooling high-power density hub permanent magnet motor for electric vehicle |
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| CN (1) | CN102624117A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944336A (en) * | 2014-04-10 | 2014-07-23 | 山东理工大学 | Hub drive motor with radial and tangential permanent magnet steel embedded in rotor |
| CN108631491A (en) * | 2017-03-20 | 2018-10-09 | 浙江绿源电动车有限公司 | Motor and electric vehicle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521413A (en) * | 2008-02-28 | 2009-09-02 | 杨光笋 | Internal bias hub motor |
| CN101877524A (en) * | 2009-04-30 | 2010-11-03 | 浙江关西电机有限公司 | Integrated hub motor and control method thereof |
-
2012
- 2012-04-01 CN CN2012100967025A patent/CN102624117A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521413A (en) * | 2008-02-28 | 2009-09-02 | 杨光笋 | Internal bias hub motor |
| CN101877524A (en) * | 2009-04-30 | 2010-11-03 | 浙江关西电机有限公司 | Integrated hub motor and control method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944336A (en) * | 2014-04-10 | 2014-07-23 | 山东理工大学 | Hub drive motor with radial and tangential permanent magnet steel embedded in rotor |
| CN108631491A (en) * | 2017-03-20 | 2018-10-09 | 浙江绿源电动车有限公司 | Motor and electric vehicle |
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Application publication date: 20120801 |