CN102570755A - Spherical motor - Google Patents
Spherical motor Download PDFInfo
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- CN102570755A CN102570755A CN2012100637716A CN201210063771A CN102570755A CN 102570755 A CN102570755 A CN 102570755A CN 2012100637716 A CN2012100637716 A CN 2012100637716A CN 201210063771 A CN201210063771 A CN 201210063771A CN 102570755 A CN102570755 A CN 102570755A
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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
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Abstract
The invention discloses a spherical motor for an electric bicycle. The spherical motor comprises a stator and a rotor, wherein the stator is fixedly arranged on a fixing shaft, the rotor can rotate in the circumferential direction of the fixing shaft, a wire winding group is arranged on the stator, a plurality of permanent magnetic bodies are arranged on the rotor, the rotor is in a hollow spherical shape, the permanent magnetic bodies are fixedly arranged on a hollow inner case of the rotor, the fixing shaft passes through the spherical center of the rotor, the stator is in a solid spherical shape provided with the wire winding group at the inside, the fixing shaft passes through the spherical center of the stator, the radius of the stator is smaller than the radius of the rotor and is arranged in the hollow part of the rotor, and the direction of a magnetic field generated after current is introduced into the wire winding group is vertical to the spherical surface of the rotor in the corresponding position. The spherical motor provided by the invention has the advantages that the rotor and the stator are both designed into the spherical shape, the sum of the sizes of the permanent magnetic bodies accommodated inside the spherical rotor is great, meanwhile, the heat radiation area is large, the distance between the spherical stator and the rotor is small, the energy conversion rate is higher, and meanwhile, the heat radiation performance is better.
Description
Technical field
The present invention relates to technical field of motors, relate in particular to a kind of ball-type motor of electric motor car and electric motor car that uses this ball-type motor of being used for.
Background technology
Motor is to realize the conversion of electric energy or a kind of calutron of transmission according to the law of electromagnetic induction, and it mainly acts on is to produce driving torque, as the power source of electrical equipment or various machineries.Conventional motor is divided into the two large divisions: stator and rotor.Stator is the stationary part of motor, mainly is used for producing magnetic field.Rotor is the rotating part of motor, and the main effect of rotor is induced electromotive force or produces electromagnetic torque, makes mechanical energy become the hinge that electric energy (generator) or electric energy become mechanical energy (motor).Produce induced electromotive force and electromagnetic torque during machine operation, to realize the conversion of energy.
The rotor case of existing wheel hub motor is hollow column structure or rectangular structure; Permanent magnet is fixed on its rotor case inwall; Stator generally also is a cylindrical structural; Stator is fixed on the fixed axis, and fixed axis is fixed on the switching-over joint of wheel, and rotor is movably connected on the fixed axis through bearing.In order to make wheel hub motor can produce bigger electric energy or mechanical energy, common way be in column or square rotor outer casing space as much as possible installation permanent magnet or the size that increases rotor case to obtain bigger permanent magnet installing space.Yet; The space size of column or square rotor shell is limited, and the quantity of the rotor winding of installation also is limited, on the other hand; Because the distance on the cylindrical structural between the permanent magnet of coiling group and rotor is bigger, so can only obtain relatively large energy (electric energy or mechanical energy).If increase the size of rotor case, then can increase the cost of wheel hub motor, and increase the position that wheel hub motor takies.
Therefore, the wheel hub motor of prior art can not satisfy the high occasion use of ask for something energy conversion efficiency.
Summary of the invention
The objective of the invention is to overcome weak point of the prior art and provide a kind of energy conversion efficiency higher, simultaneously the ball-type motor that is used for electric motor car of good heat dispersion performance.
For realizing above-mentioned purpose; The technical scheme that the present invention takes is: a kind of ball-type motor, comprise the stator that is fixed on the fixed axis, the rotor that can rotate in a circumferential direction around fixed axis, and said stator is provided with the coiling group; Said rotor is provided with a plurality of permanent magnets; Said rotor is a hollow ball shape, and said permanent magnet is fixed on the hollow inner casing of said rotor, and said fixed axis passes said geometric center of rotor;
Said stator is the inner solid sphere that is provided with the coiling group, and said fixed axis passes the centre of sphere of said stator;
The radius of said stator is located in said rotor hollow less than the radius of said rotor and said stator, and said coiling group feeds the magnetic direction that produces behind the electric current rotor sphere perpendicular to correspondence position.
Said rotor is made as hollow ball shape, and under the identical situation of rotor case area, the internal capacity of spherical spinner is bigger than cylindrical and square capacity, and the volume summation of the permanent magnet that can hold is bigger; Under the identical situation of internal capacity, the area of spherical spinner is bigger than cylindrical and square, and the area of dissipation of motor is bigger.Simultaneously, stator also is made as sphere, the magnetic direction that makes coiling group in the stator feed to produce behind the electric current is all the time perpendicular to the rotor sphere of correspondence position, and the distance of permanent magnet on the hollow inner casing of rotor and stator is less; Ball-type motor of the present invention is compared with the wheel hub motor of existing structure; Because rotor can hold the permanent magnet of more volumes in certain spatial dimension; Because stator also is spherical, and the distance between stator and the rotor is less, make stator can produce bigger induced electromotive force or the bigger electromagnetic torque of generation simultaneously; Conversion efficiency between electric energy and the kinetic energy is higher, has advantages such as volume is little, area of dissipation is big simultaneously.
Preferred implementation as ball-type motor according to the invention; The said rotor edge direction vertical with said fixed axis is divided into internal rotor and external rotor; Be provided with magnetic clutch between said internal rotor and the external rotor, an end of said magnetic clutch is fixed on said internal rotor or the external rotor; The said stator edge direction vertical with said fixed axis is divided into internal stator and external stator, and coiling group in being provided with in the said internal stator is provided with outer coiling group in the said external stator.
Rotor is divided into internal rotor and external rotor, accordingly stator is divided into internal stator and external stator, the coiling group is set respectively in internal stator and the external stator; When magnetic clutch is not switched on; Magnetic clutch does not have magnetic, and internal rotor and external rotor separate, if interior coiling group is switched on and outer coiling group no power; Internal rotor rotates, and external rotor is static; In like manner, if outer coiling group is switched on and interior coiling group no power, external rotor rotates, and internal rotor is static.When magnetic clutch is switched on; Magnetic clutch is pulled together said internal rotor and external rotor; No matter separately interior coiling energising is perhaps switched on outer coiling group separately, or interior coiling group and outer coiling group are switched on simultaneously, internal rotor all will be simultaneously with identical rotational speed with external rotor; This moment is when switching on interior coiling group separately; Rotation of inner rotor drives said external rotor through magnetic clutch and rotates simultaneously; Thereby being electric energy, internal rotor one side is converted into kinetic energy drive internal rotor rotation (being the effect of motor); And external rotor one side is not switched on owing to outer coiling group, and the rotation of external rotor will realize that kinetic energy is converted into electric energy (being the effect of generator); In like manner, during with the energising of outer coiling group, a side of external rotor plays motor when independent, and the effect of a side starter/generator of internal rotor; And interior coiling group and outer coiling group be when switching on simultaneously, and whole ball-type motor plays motor.
In use; When electric motor car slowly goes, can magnetic clutch be cut off the power supply, internal rotor and external rotor are separated; Only give an energising in interior coiling group and the outer coiling group; Let a rotation in internal rotor and the external rotor, and another one remains static, i.e. the independent rotation of internal rotor or external rotor can be satisfied the needs of electric vehicle running; When electric vehicle running comparatively fast maybe need be gone up a slope, with the magnetic clutch energising, make internal rotor and external rotor be pulled together, give interior coiling group and outer coiling group energising simultaneously, rotate the power demand of satisfying electric motor car in the time of internal rotor and external rotor.When electric motor car need brake; The power supply of coiling group and outer coiling group in breaking off simultaneously; But because action of inertia, rotor can rotate the regular hour could be static, and this moment, the rotation of rotor made mechanical energy change into electric energy; Be embodied as the power source charges of electric motor car, the effect of promptly said this moment ball-type motor starter/generator.
This kind design can be selected to switch on simultaneously, the magnetic clutch between internal rotor and the external rotor is switched on or outage with one in interior coiling group and outer coiling group energising or with the two flexibly; The rotation that makes rotor is flexibility more; According to circumstances make internal rotor one side starter/generator effect, external rotor one side of the said ball-type motor motivation that electrifies, perhaps electrify motivation, external rotor one side starter/generator effect of internal rotor one side, perhaps internal rotor and the external rotor motivation that electrifies simultaneously; Or internal rotor and external rotor be the starter/generator effect simultaneously; Realize the conversion between electric energy and the mechanical energy flexibly, avoid the waste of the energy, energy-conserving and environment-protective.
Said magnetic clutch can be fixed on the internal rotor, also can be fixed on the external rotor, during use; Because external rotor links to each other with the wheel hub of electric motor car, the suspension on the chassis of internal rotor and electric motor car links to each other, so preferably; Magnetic clutch is fixed on the internal rotor, and stability is better.
As the preferred implementation of ball-type motor according to the invention, said internal rotor and external rotor big or small identical.When rotor was divided into internal rotor and external rotor equably, the rotation of rotor was more stable.
As the preferred implementation of ball-type motor according to the invention, said internal stator and external stator big or small identical.When stator was divided into internal stator and external stator equably, internal stator was identical with induced electromotive force or electromagnetic torque that external stator produces, and the rotation of rotor is more stable.
As the preferred implementation of ball-type motor according to the invention, the centre of sphere of said rotor and stator is overlapping.When the centre of sphere of rotor and stator was overlapping, the distance between stator and the rotor was impartial, and the rotation of rotor is more stable.
As the preferred implementation of ball-type motor according to the invention, said epitrochanterian permanent magnet is evenly distributed on the hollow inner casing of said rotor.When permanent magnet evenly distributed on the hollow inner casing of rotor, the structure of rotor was more stable with rotation.
The present invention also provides a kind of electric motor car, and said electric motor car comprises as above arbitrary described ball-type motor.The fixed axis of stator is fixed on the knuckle of wheel, and internal rotor is in the inboard of wheel, and external rotor is in the outside of wheel.
Ball-type motor according to the invention; Owing to simultaneously rotor and stator all are designed to sphere; The magnetic field that coiling group when energising produces on the stator is all the time perpendicular to the rotor sphere of correspondence position; Under the identical situation of rotor case area, the cylindrical and square capacity of the inner Capacity Ratio of spherical spinner is big, and the volume summation of the permanent magnet that spherical spinner inside can hold is bigger than volume summation cylindrical or the inner permanent magnet that holds of square rotor; And because the distance between spherical stator and the rotor is littler than the distance between cylindrical or square stator and the rotor; Thereby can make stator produce bigger induced electromotive force or electromagnetic torque, better realize the conversion between electric energy and the mechanical energy, have higher energy conversion efficiency.Simultaneously, compare with the cylindrical and square rotor of equal volume, the area of dissipation of spherical spinner is bigger, helps the heat radiation of motor.Ball-type motor according to the invention has energy conversion rate height, the better advantage of heat dispersion.
In like manner, use the electric motor car of ball-type motor of the present invention, also have the above advantage as drive unit.
Description of drawings
Fig. 1 is the structural representation of a kind of execution mode of ball-type motor of the present invention;
Fig. 2 is the structural representation of a kind of execution mode of the rotor of ball-type motor of the present invention;
Fig. 3 is the structural representation of a kind of execution mode of the stator of ball-type motor of the present invention.
Embodiment
The present invention is described further the object of the invention, technical scheme and advantage for better explaining below in conjunction with accompanying drawing and specific embodiment.
Shown in accompanying drawing 1; A kind of ball-type motor of the present invention comprises the stator 10 that is fixed on the fixed axis 30, the rotor 20 that can rotate in a circumferential direction around fixed axis 30, and said stator 10 is provided with coiling group (not drawing among Fig. 1); Said rotor 20 is provided with a plurality of permanent magnets 26; Said rotor 20 is a hollow ball shape, and said permanent magnet 26 is fixed on the hollow inner casing of said rotor 20, and said fixed axis 30 passes the centre of sphere of said rotor 20; Said stator 10 is the inner solid sphere that is provided with the coiling group, and said fixed axis 30 passes the centre of sphere of said stator 10; The radius of said stator 10 is located in said rotor 20 hollow less than the radius of said rotor 20 and said stator 10, and said coiling group feeds the magnetic direction that produces behind electric current rotor 20 spheres perpendicular to correspondence position.
Said rotor 20 is made as hollow ball shape, and under the identical situation of rotor case area, the internal capacity of spherical spinner 20 is bigger than cylindrical and square capacity, and the volume summation of the permanent magnet 26 that can hold is bigger; Under the identical situation of internal capacity, the area of spherical spinner 20 is bigger than cylindrical and square, and the area of dissipation of motor is bigger.Simultaneously, stator 10 also is made as sphere, the magnetic direction that makes coiling group in the stator 10 feed to produce behind the electric current is all the time perpendicular to rotor 20 spheres of correspondence position, and the permanent magnet on the rotor 20 hollow inner casings 26 is less with the distance of stator 10; Ball-type motor of the present invention is compared with the wheel hub motor of existing structure; Because rotor 20 can hold the permanent magnet 26 of more volumes in certain spatial dimension; Because stator 10 also is spherical, and the distance between stator 10 and the rotor 20 is less, make stator 10 can produce bigger induced electromotive force or the bigger electromagnetic torque of generation simultaneously; Conversion efficiency between electric energy and the kinetic energy is higher, has advantages such as volume is little, area of dissipation is big simultaneously.
Preferably; Shown in accompanying drawing 2 and 3; Said rotor 20 edges are divided into internal rotor 22 and external rotor 24 with said fixed axis 30 vertical directions, are provided with magnetic clutch 40 between said internal rotor 22 and the external rotor 24, and an end of said magnetic clutch 40 is fixed on said internal rotor 22 or the external rotor 24; Said stator 10 edges are divided into internal stator 12 and external stator 14 with said fixed axis 30 vertical directions, and coiling group 13 in being provided with in the said internal stator 12 is provided with outer coiling group 15 in the said external stator 14.
In use; When electric motor car slowly goes, can internal rotor 22 and external rotor be opened magnetic clutch 40 outages in 24 minutes; Only give an energising in interior coiling group 13 and the outer coiling group 15; Let a rotation in internal rotor 22 and the external rotor 24, and another one remains static, i.e. internal rotor 22 or external rotor 24 independent rotations can be satisfied the needs of electric vehicle running; When electric vehicle running comparatively fast maybe need be gone up a slope; With magnetic clutch 40 energisings; Make internal rotor 22 and external rotor 24 be pulled together, give interior coiling group 13 and outer coiling group 15 energisings simultaneously, the power demand of electric motor car is satisfied in rotation in the time of internal rotor 22 and external rotor 24.When electric motor car need brake; The power supply of coiling group 13 and outer coiling group 15 in breaking off simultaneously; But because action of inertia, rotor 20 can be rotated further the regular hour could be static, and this moment, the rotation of rotor 20 made mechanical energy change into electric energy; Be embodied as the power source charges of electric motor car, the effect of promptly said this moment ball-type motor starter/generator.
This kind design can be selected to switch on simultaneously, the magnetic clutch between internal rotor 22 and the external rotor 24 40 is switched on or outage with one in interior coiling group 13 and the outer coiling group 15 energising or with the two flexibly; The rotation that makes rotor 20 is flexibility more; According to circumstances make internal rotor 22 1 side starter/generator effects, external rotor 24 1 sides of the said ball-type motor motivation that electrifies; Perhaps electrify motivation, external rotor 24 1 side starter/generator effects of internal rotor 22 1 sides; Perhaps internal rotor 22 and external rotor 24 motivation that electrifies simultaneously, or internal rotor 22 and external rotor 24 starter/generator effect are simultaneously realized the conversion between electric energy and the mechanical energy flexibly; Avoid the waste of the energy, energy-conserving and environment-protective.
Said magnetic clutch 40 can be fixed on the internal rotor 22, also can be fixed on the external rotor 24, during use; Because external rotor 24 links to each other with the wheel hub of electric motor car; Suspension on the chassis of internal rotor 22 and electric motor car links to each other, and therefore preferably, magnetic clutch 40 is fixed on the external rotor 24; Shown in accompanying drawing 2, the stability of electric motor car is better during use.
Preferably, shown in accompanying drawing 2, said internal rotor 22 and external rotor 24 big or small identical.When rotor 20 was divided into internal rotor 22 equably with external rotor 24, the rotation of rotor 20 was more stable.
Preferably, shown in accompanying drawing 3, said internal stator 12 and external stator 14 big or small identical.When stator 10 was divided into internal stator 12 equably with external stator 14, internal stator 12 was identical with induced electromotive force or electromagnetic torque that external stator 14 produces, and the rotation of rotor 10 is more stable.
Preferably, shown in accompanying drawing 1, the centre of sphere of said rotor 20 and stator 10 is overlapping.When the centre of sphere of rotor 20 and stator 10 was overlapping, the distance between stator 10 and the rotor 20 was impartial, and the rotation of rotor 20 is more stable.
Preferably, shown in accompanying drawing 1, the permanent magnet 26 on the said rotor 20 is evenly distributed on the hollow inner casing of said rotor 20.When permanent magnet 26 evenly distributed on the hollow inner casing of rotor 20, the structure of rotor 20 was more stable with rotation.
The invention also discloses a kind of electric motor car (not drawing among the figure), said electric motor car comprises aforesaid ball-type motor, and the fixed axis 30 of said ball-type motor is fixed on the knuckle (not drawing among the figure) of wheel.In like manner, use the electric motor car of ball-type motor of the present invention, also have energy conversion efficiency height, little, the low cost and other advantages of volume as drive unit.Adopt the electric motor car of ball-type motor of the present invention, when improving energy conversion efficiency, have bigger area of dissipation, and when using, can control the conversion between kinetic energy and the electric energy flexibly, avoid voluntary waste, energy-conserving and environment-protective.
Should be noted that at last; Above embodiment is only in order to explain technical scheme of the present invention; But not to the restriction of protection range of the present invention, although with reference to preferred embodiment the present invention has been done explanation at length, those of ordinary skill in the art is to be understood that; Can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the essence and the scope of technical scheme of the present invention.
Claims (7)
1. ball-type motor comprises the stator that is fixed on the fixed axis, the rotor that can rotate in a circumferential direction around fixed axis, and said stator is provided with the coiling group, and said rotor is provided with a plurality of permanent magnets, it is characterized in that:
Said rotor is a hollow ball shape, and said permanent magnet is fixed on the hollow inner casing of said rotor, and said fixed axis passes said geometric center of rotor;
Said stator is the inner solid sphere that is provided with the coiling group, and said fixed axis passes the centre of sphere of said stator;
The radius of said stator is located in said rotor hollow less than the radius of said rotor and said stator, and said coiling group feeds the magnetic direction that produces behind the electric current rotor sphere perpendicular to correspondence position.
2. ball-type motor as claimed in claim 1; It is characterized in that; The said rotor edge direction vertical with said fixed axis is divided into internal rotor and external rotor, is provided with magnetic clutch between said internal rotor and the external rotor, and an end of said magnetic clutch is fixed on said internal rotor or the external rotor;
The said stator edge direction vertical with said fixed axis is divided into internal stator and external stator, and coiling group in being provided with in the said internal stator is provided with outer coiling group in the said external stator.
3. ball-type motor as claimed in claim 2 is characterized in that, said internal rotor and external rotor big or small identical.
4. ball-type motor as claimed in claim 2 is characterized in that, said internal stator and external stator big or small identical.
5. ball-type motor as claimed in claim 1 is characterized in that: the centre of sphere of said rotor and stator is overlapping.
6. ball-type motor as claimed in claim 1 is characterized in that: said epitrochanterian permanent magnet is evenly distributed on the hollow inner casing of said rotor.
7. electric motor car comprises like each described ball-type motor in the claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210063771.6A CN102570755B (en) | 2012-03-12 | 2012-03-12 | Spherical motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210063771.6A CN102570755B (en) | 2012-03-12 | 2012-03-12 | Spherical motor |
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| CN102570755A true CN102570755A (en) | 2012-07-11 |
| CN102570755B CN102570755B (en) | 2014-06-04 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014168357A (en) * | 2013-02-28 | 2014-09-11 | National Institute Of Advanced Industrial & Technology | Control method of spherical motor |
| CN104065180A (en) * | 2014-06-30 | 2014-09-24 | 南京思倍润信息科技有限公司 | Spherical Halbach omnidirectional kinetic energy collector |
| CN105939130A (en) * | 2016-06-24 | 2016-09-14 | 南京理工大学 | Multi-degree of freedom piezoelectric actuator with built-in stator |
| CN110739828A (en) * | 2019-10-25 | 2020-01-31 | 山东大学 | ball type permanent magnet coupling |
| CN111293841A (en) * | 2020-03-13 | 2020-06-16 | 河北科技大学 | Double-rotor motor |
| CN112688529A (en) * | 2021-01-09 | 2021-04-20 | 杨平安 | Rocker structure based on electromagnetic induction |
| CN115189543A (en) * | 2022-07-27 | 2022-10-14 | 哈尔滨体育学院 | Wireless motion sensor with self-generating mechanism |
| US11581761B2 (en) | 2020-01-31 | 2023-02-14 | Honeywell International Inc. | Two degree-of-freedom spherical brushless DC motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014168357A (en) * | 2013-02-28 | 2014-09-11 | National Institute Of Advanced Industrial & Technology | Control method of spherical motor |
| CN104065180A (en) * | 2014-06-30 | 2014-09-24 | 南京思倍润信息科技有限公司 | Spherical Halbach omnidirectional kinetic energy collector |
| CN105939130A (en) * | 2016-06-24 | 2016-09-14 | 南京理工大学 | Multi-degree of freedom piezoelectric actuator with built-in stator |
| CN105939130B (en) * | 2016-06-24 | 2018-01-05 | 南京理工大学 | Stator internally-arranged type multiple degrees of freedom piezoelectric actuator |
| CN110739828A (en) * | 2019-10-25 | 2020-01-31 | 山东大学 | ball type permanent magnet coupling |
| US11581761B2 (en) | 2020-01-31 | 2023-02-14 | Honeywell International Inc. | Two degree-of-freedom spherical brushless DC motor |
| CN111293841A (en) * | 2020-03-13 | 2020-06-16 | 河北科技大学 | Double-rotor motor |
| CN112688529A (en) * | 2021-01-09 | 2021-04-20 | 杨平安 | Rocker structure based on electromagnetic induction |
| CN112688529B (en) * | 2021-01-09 | 2022-09-02 | 杨平安 | Rocker structure based on electromagnetic induction |
| CN115189543A (en) * | 2022-07-27 | 2022-10-14 | 哈尔滨体育学院 | Wireless motion sensor with self-generating mechanism |
| CN115189543B (en) * | 2022-07-27 | 2023-07-18 | 哈尔滨体育学院 | Wireless motion sensor with self-generating mechanism |
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