CN102355101A - Core-free permanent magnet direct current motor with axial magnetic field for electric vehicle - Google Patents
Core-free permanent magnet direct current motor with axial magnetic field for electric vehicle Download PDFInfo
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- CN102355101A CN102355101A CN2011102652218A CN201110265221A CN102355101A CN 102355101 A CN102355101 A CN 102355101A CN 2011102652218 A CN2011102652218 A CN 2011102652218A CN 201110265221 A CN201110265221 A CN 201110265221A CN 102355101 A CN102355101 A CN 102355101A
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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 core-free permanent magnet direct current motor with an axial magnetic field for an electric vehicle. The motor comprises permanent magnets, magnetic conduction yokes, a bearing, a shaft core and a hub. A core-free inner stator is arranged coaxially on the shaft core. The two sides of the inner stator are coaxially provided with a rotor on which an even number of permanent magnets are uniformly distributed respectively. The inner edges of the rotors are connected with the magnetic conduction yokes on the two sides of the motor respectively, and are arranged together with the shaft core of the motor by the bearing. The outer edges of the rotors are connected together with the hub of the motor by the magnetic conduction yokes. The two sides of the stator are provided with the rotor respectively, a core and a toothed groove are not required, the dual rotors and the single stator form dual air gaps, and the magnetic field is axial. The efficiency of the motor is improved, effective metal materials are saved, the life mileage of the motor is increased, the climbing capability of the motor is improved and the battery replacement cycle of the electric vehicle is prolonged; and the motor is particularly suitable for use as a driving motor for the electric vehicle.
Description
Technical field
The present invention relates to a kind of electric vehicle and do not have iron core, axial magnetic field permanent magnet DC motor.
Background technology
Conventional motor of electric motor car generally has only a stator and a rotor; Its stator be electromagnetic wire in the groove of silicon steel sheet, be connected with mandrel through retort stand, rotor is fixed on the motor housing inner edge for the rectangle permanent magnet; Form magnetic field for radially, air gap is single air gap.Shell is connected with mandrel through bearing.
During the motor operation, because the iron core that has silicon steel sheet to process exists, electromagnetic torque can produce pulsation because of slot effect; And moment of inertia is big, and speed responsive is slower, particularly unavoidably produces iron loss; And used electromagnetic wire is more, and copper loss is also bigger, so electric efficiency is restricted.
Summary of the invention
The present invention seeks to provides a kind of novel, high efficiency, no iron core, axial magnetic field electric vehicle high-efficiency permanent magnetic DC motor to the defective that prior art exists.
The present invention adopts following technical scheme for realizing above-mentioned purpose:
Electric vehicle of the present invention does not have iron core, axial magnetic field permanent magnet DC motor, comprises permanent magnet, conductive magnetic yoke, bearing, axle core and wheel hub, wherein at the axle mandrel iron-free in-core stator is housed; These internal stator both sides are coaxial to take up two rotors that are evenly equipped with the even number permanent magnet on it; This rotor inner edge is connected respectively with motor both sides conductive magnetic yoke, installs through bearing and motor shaft core, and the rotor outer rim links together through conductive magnetic yoke and motor wheel hub; Adopt a stator, both sides are the mode of totally two rotors, and no iron core, no teeth groove, birotor and single stator constitute two air gaps, magnetic field is axial.
Stator is formed by stator winding and nonferromugnetic material cast compacting.
The annular conductive magnetic yoke of conductive magnetic yoke for processing by mild steel.
Epitrochanterian permanent magnet adopts fan-shaped or circular Nd-Fe-B permanent magnet, arranges radially.
The magnetic field that the Nd-Fe-B permanent magnet that is uniformly distributed with on two rotors forms is axial magnetic field.
Under axial magnetic field, stator winding adopts the double-deck winding mode coiling of concentrating.
The present invention has changed the existing structure of the automobile-used motor of conventional electric; Adopt a stator; Both sides are the mode of totally two rotors; Two layer winding, no iron core, no teeth groove under the axial magnetic field, two gap structures that birotor and single stator constitute have improved electric efficiency; Practiced thrift the effective metal material; Increased the continuation of the journey mileage and the climbing capacity of electric motor car, prolonged the time of electric motor car replacing battery, be particularly suitable for using as driving motor of electric vehicle.
Description of drawings
Fig. 1: structure chart of the present invention.
Fig. 2: vertical view of the present invention.
Fig. 3: stator winding structure figure of the present invention.
Label among the figure: permanent magnet (1), stator winding (2), conductive magnetic yoke (3), bearing (4), axle core (5) and wheel hub (6).
Embodiment
Extremely shown in Figure 3 like Fig. 1; The electric vehicle high-efficiency permanent magnetic DC motor is made up of axle core 5, shell, stator, rotor, bearing 4, conductive magnetic yoke 3, permanent magnet 1, motor outlet; Install winding on the stator bracket, the coaxial iron-free in-core stator that constitutes by electromagnetic wire winding and epoxy material that is equipped with on mandrel; These internal stator both sides are coaxial is equipped with two rotors that are evenly equipped with the even number permanent magnet on it; This rotor inner edge is connected respectively with motor both sides end cap, installs through bearing and motor shaft core, and the rotor outer rim links together through end cap and motor wheel hub.Adopt a stator, both sides are the mode of totally two rotors, and no iron core, no teeth groove, birotor and single stator constitute two air gaps, magnetic field is axial.
And: stator forms no ferrimagnet by winding and epoxy resin (or other nonferromugnetic materials) cast compacting.
And: adopt a stator, both sides are two gap structures of totally two rotors.
And: the permanent magnet of two rotors adopts fan-shaped or circular Nd-Fe-B permanent magnet, is fixed on the annular conductive magnetic yoke that mild steel processes.
And: the magnetic field that the Nd-Fe-B permanent magnet that is uniformly distributed with on two rotors forms is axial magnetic field.
And: under axial magnetic field, winding adopts the double-deck winding mode coiling of concentrating.
Concrete major technique is implemented
A, permanent magnet use neodymium iron boron, and single face is selected 23 pairs of utmost points for use, uses 96 altogether.
B, electromagnetic wire are selected 0.51 enamelled wire for use, adopt virtual 51 grooves to concentrate the double-deck mode of winding, 7 lines and around 5 circles (selecting not collinear footpath, the different numbers of turn for use according to different capacity and rotating speed).
C, rotor-position sensor are made up of three Hall elements, can constitute 120 degree or 60 degree electrical degrees.
Table 1 conventional electric vehicle motor and new and effective motor sampling test contrast of the present invention (experimental condition is identical, and battery all uses the capacity of 48 volt of 12 ampere-hour):
Table 1
| ? | Peak efficiency | Peak torque | The continuation of the journey mileage | Noise |
| Conventional motors | ＜82% | 25N.M | 40KM | 60db |
| New and effective motor | ＞90% | 38N.M | 62KM | 50db |
Claims (6)
1. an electric vehicle does not have iron core, axial magnetic field permanent magnet DC motor, it is characterized in that comprising permanent magnet (1), conductive magnetic yoke (3), bearing (4), axle core (5) and wheel hub (6), wherein at the coaxial iron-free in-core stator that is equipped with of bearing (4); The same bearings in these internal stator both sides (4) are equipped with two rotors that are evenly equipped with even number permanent magnet (1) on it; This rotor inner edge is connected respectively with motor both sides conductive magnetic yoke (3), installs through bearing and motor shaft core (5), and the rotor outer rim links together through conductive magnetic yoke (3) and motor wheel hub (6); Adopt a stator, both sides are the mode of totally two rotors, and no iron core, no teeth groove, birotor and single stator constitute two air gaps, magnetic field is axial.
2. electric vehicle according to claim 1 does not have iron core, axial magnetic field permanent magnet DC motor, it is characterized in that: stator is formed by stator winding (2) and nonferromugnetic material cast compacting.
3. the automobile-used high-efficiency permanent magnetic DC motor of electric according to claim 1 is characterized in that: the annular conductive magnetic yoke of conductive magnetic yoke (3) for being processed by mild steel.
4. electric vehicle according to claim 1 does not have iron core, axial magnetic field permanent magnet DC motor, it is characterized in that: epitrochanterian permanent magnet adopts fan-shaped or circular Nd-Fe-B permanent magnet, and permanent magnet is arranged radially.
5. electric vehicle according to claim 1 does not have iron core, axial magnetic field permanent magnet DC motor, it is characterized in that: the magnetic field that the Nd-Fe-B permanent magnet that is uniformly distributed with on two rotors forms is axial magnetic field.
6. electric vehicle according to claim 5 does not have iron core, axial magnetic field permanent magnet DC motor, it is characterized in that: under axial magnetic field, stator winding adopts the double-deck winding mode coiling of concentrating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102652218A CN102355101A (en) | 2011-09-08 | 2011-09-08 | Core-free permanent magnet direct current motor with axial magnetic field for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102652218A CN102355101A (en) | 2011-09-08 | 2011-09-08 | Core-free permanent magnet direct current motor with axial magnetic field for electric vehicle |
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| CN102355101A true CN102355101A (en) | 2012-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011102652218A Pending CN102355101A (en) | 2011-09-08 | 2011-09-08 | Core-free permanent magnet direct current motor with axial magnetic field for electric vehicle |
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| CN (1) | CN102355101A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457424A (en) * | 2013-05-17 | 2013-12-18 | 湖南大学 | Double-rotor iron-core-free permanent-magnet synchronous motor |
| CN104218762A (en) * | 2014-09-26 | 2014-12-17 | 洛阳市贝叶机电有限公司 | Mounting structure of rotor and stator of permanent magnet iron-core-free motor |
| CN104218758A (en) * | 2014-09-03 | 2014-12-17 | 洛阳市贝叶机电有限公司 | Permanent magnet coreless brushless motor |
| CN105490483A (en) * | 2016-01-25 | 2016-04-13 | 张红中 | Sheet-type driving and power generation integrated machine used for electric vehicle |
| CN106208534A (en) * | 2016-08-15 | 2016-12-07 | 璧垫旦 | A kind of novel permanent magnetic formula DC servo tests the speed unit |
| CN107425686A (en) * | 2017-09-26 | 2017-12-01 | 江苏雅迪科技发展有限公司宁波分公司 | Coreless disc type wheel hub motor |
| CN104868671B (en) * | 2015-05-12 | 2018-04-03 | 北京航空航天大学 | A kind of coaxial two section Halbach permanent magnetism synchronous micromotors based on MEMS technology |
| CN109462318A (en) * | 2018-11-06 | 2019-03-12 | 东南大学 | A kind of magnet structure axial stator iron-core less motor |
| CN110462981A (en) * | 2017-03-22 | 2019-11-15 | 万络机电公司 | The magnet structure of unit magnet with multiple forms that connector is presented |
| CN112572780A (en) * | 2020-12-04 | 2021-03-30 | 中国航空工业集团公司成都飞机设计研究所 | Motor wheel electric driving device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1510820A (en) * | 2002-12-25 | 2004-07-07 | 王和平 | Brushless non-core electric hub |
| CN1773817A (en) * | 2005-11-11 | 2006-05-17 | 沈阳工业大学 | AC plate type non-core permasyn motor based on Halbach array |
| CN101728912A (en) * | 2010-02-04 | 2010-06-09 | 天津大学 | Disk-type permanent magnet synchronous motor used for electric automobile hub based on Halbach structure |
| CN101764490A (en) * | 2010-02-04 | 2010-06-30 | 天津大学 | Multi-disc type permanent magnet synchronous motor for hubs of electric car |
| CN101764489A (en) * | 2010-02-04 | 2010-06-30 | 天津大学 | Disc type permasyn motor for electric car hub |
-
2011
- 2011-09-08 CN CN2011102652218A patent/CN102355101A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1510820A (en) * | 2002-12-25 | 2004-07-07 | 王和平 | Brushless non-core electric hub |
| CN1773817A (en) * | 2005-11-11 | 2006-05-17 | 沈阳工业大学 | AC plate type non-core permasyn motor based on Halbach array |
| CN101728912A (en) * | 2010-02-04 | 2010-06-09 | 天津大学 | Disk-type permanent magnet synchronous motor used for electric automobile hub based on Halbach structure |
| CN101764490A (en) * | 2010-02-04 | 2010-06-30 | 天津大学 | Multi-disc type permanent magnet synchronous motor for hubs of electric car |
| CN101764489A (en) * | 2010-02-04 | 2010-06-30 | 天津大学 | Disc type permasyn motor for electric car hub |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457424A (en) * | 2013-05-17 | 2013-12-18 | 湖南大学 | Double-rotor iron-core-free permanent-magnet synchronous motor |
| CN104218758A (en) * | 2014-09-03 | 2014-12-17 | 洛阳市贝叶机电有限公司 | Permanent magnet coreless brushless motor |
| CN104218762A (en) * | 2014-09-26 | 2014-12-17 | 洛阳市贝叶机电有限公司 | Mounting structure of rotor and stator of permanent magnet iron-core-free motor |
| CN104868671B (en) * | 2015-05-12 | 2018-04-03 | 北京航空航天大学 | A kind of coaxial two section Halbach permanent magnetism synchronous micromotors based on MEMS technology |
| CN105490483A (en) * | 2016-01-25 | 2016-04-13 | 张红中 | Sheet-type driving and power generation integrated machine used for electric vehicle |
| CN106208534A (en) * | 2016-08-15 | 2016-12-07 | 璧垫旦 | A kind of novel permanent magnetic formula DC servo tests the speed unit |
| CN110462981A (en) * | 2017-03-22 | 2019-11-15 | 万络机电公司 | The magnet structure of unit magnet with multiple forms that connector is presented |
| CN110462981B (en) * | 2017-03-22 | 2022-08-02 | 万络机电公司 | Magnet arrangement with a plurality of unit magnets in the form of tabs |
| CN107425686A (en) * | 2017-09-26 | 2017-12-01 | 江苏雅迪科技发展有限公司宁波分公司 | Coreless disc type wheel hub motor |
| CN109462318A (en) * | 2018-11-06 | 2019-03-12 | 东南大学 | A kind of magnet structure axial stator iron-core less motor |
| CN112572780A (en) * | 2020-12-04 | 2021-03-30 | 中国航空工业集团公司成都飞机设计研究所 | Motor wheel electric driving device |
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Application publication date: 20120215 |