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 PDF

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Publication number
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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CN
China
Prior art keywords
motor
permanent magnet
stator
magnetic
core
Prior art date
Application number
CN2011102652218A
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Chinese (zh)
Inventor
王春煜
Original Assignee
王春煜
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 王春煜 filed Critical 王春煜
Priority to CN2011102652218A priority Critical patent/CN102355101A/en
Publication of CN102355101A publication Critical patent/CN102355101A/en

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/64Electric machine technologies in electromobility

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

Electric vehicle does not have iron core, axial magnetic field permanent magnet DC motor
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.
CN2011102652218A 2011-09-08 2011-09-08 Core-free permanent magnet direct current motor with axial magnetic field for electric vehicle CN102355101A (en)

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

Publications (1)

Publication Number Publication Date
CN102355101A true CN102355101A (en) 2012-02-15

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Family Applications (1)

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CN (1) CN102355101A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
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
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
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

Citations (5)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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 (7)

* Cited by examiner, † Cited by third party
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
CN109462318A (en) * 2018-11-06 2019-03-12 东南大学 A kind of magnet structure axial stator iron-core less motor

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Application publication date: 20120215

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