CN202679193U - Electric automobile permanent magnet synchronous motor with wide speed regulation range - Google Patents
Electric automobile permanent magnet synchronous motor with wide speed regulation range Download PDFInfo
- Publication number
- CN202679193U CN202679193U CN2012203731363U CN201220373136U CN202679193U CN 202679193 U CN202679193 U CN 202679193U CN 2012203731363 U CN2012203731363 U CN 2012203731363U CN 201220373136 U CN201220373136 U CN 201220373136U CN 202679193 U CN202679193 U CN 202679193U
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- synchronous motor
- rotor
- magnet synchronous
- electric automobile
- motor
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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 utility model discloses an electric automobile permanent magnet synchronous motor with a wide speed regulation range. The permanent magnet synchronous motor comprises a shell, wherein a front end cover and a rear end cover are respectively installed on two ends of the shell, a stator is installed in the shell, a rotor shaft is installed between the front end cover and the rear end cover, at least two rotor modules are sleeved on the rotor shaft, an isolating ring is installed between the rotor modules, and balancing rings are installed between one rotor module and the front end cover, and between the other rotor module and the rear end cover. According to the electric automobile permanent magnet synchronous motor, the at least two rotor modules are installed on the rotor shaft, the number of the rotor modules and the length of the stator are increased to enlarge the output torque and the power of the motor on the condition of not changing the radial dimension so as to greatly improve the compatibility of the motor, the magnetic path structure is optimized, the air gap magnetic filed strength is reduced and the permanent magnetic resistance is weakened to finally improve the highest rotating speed of the motor, improve the speed regulation range of the motor and greatly expand the constant power range of the permanent magnet synchronous motor.
Description
Technical field
The utility model relates to a kind of permagnetic synchronous motor, specifically refers to the wide speed-regulation permanent-magnet synchronous motor for electric automobile.
Background technology
The existing motor that is applied on the electric automobile is divided into two kinds substantially, and the first is for adopting asynchronous machine frequency conversion drive mode: the rotating speed of motor (rotor speed) is asynchronous machine less than the rotating speed of rotating magnetic field thereby cry.It is identical with induction machine basically.s=(ns-n)/ns。S is revolutional slip, and ns is rotational speed of magnetic field, and n is rotor speed.Asynchronous machine is to be interacted by air-gap rotating magnetic field and rotor winding induced current to produce electromagnetic torque, thereby realize that energy converting between mechanical is a kind of alternating current machine of mechanical energy, asynchronous motor is divided into two kinds of forms according to rotor structure: squirrel-cage, wire wound asynchronous motor are arranged; Make the asynchronous machine of motor operation, because its rotor winding current is that induction produces, claim again induction motor.Torque is not enough when adopting asynchronous machine frequency conversion drive mode to have low speed, control precision is relatively poor, the frequency control scope is less, has larger difference with electric automobile low-speed big, high-revolving demand, simultaneously, the asynchronous machine operating efficiency is lower, can greatly reduce the continual mileage of car load; And the asynchronous machine volume and weight is larger, at vehicle difficulty is installed, and adopts the mode of variable frequency speed modulation of asynchronous motor, and generally about 3000rpm, maximum speed adopts the mode of nature cooling to the rated speed of asynchronous machine about 5000.Because moment of torsion is not enough during the asynchronous machine slow-speed of revolution, can not satisfy the instructions for use of vehicle low-speed big (starting, acceleration, climbing), and maximum speed can not satisfy the requirement of the max. speed of vehicle, therefore, asynchronous machine need to be used with multi-speed gear box, could satisfy the demand of car load.When vehicle in starting, accelerate, during climbing, gearbox places low grade, this moment, the gearbox speed reducing ratio was large, the output of motor passes to wheel after slowing down through gearbox, satisfies the high pulling torque demand of vehicle; When vehicle when running at high speed, gearbox places top grade (speed ratio is less than 1), this moment, the output speed of motor passed to wheel after promoting through gearbox, satisfied the high speed demand of vehicle.
The second is for adopting permagnetic synchronous motor: synchronous generator need to have a D.C. magnetic field in order to realize the conversion of energy.And produce the direct current in this magnetic field, be called the exciting current of generator.According to the supply mode of exciting current, everyly obtain the generator of exciting current from other power supply, be called separately excited dynamo, from generator acquisition field power supply itself, then be called self-exciter.The permagnetic synchronous motor that adopts exists speed adjustable range narrower, can not satisfy the high-speed requirement of electric automobile, need to install the deficiency that gearbox satisfies the performance requirement of car load additional, after installing gearbox additional, overall structure is complicated, volume is larger, install inconvenient, and cost is higher, adopts the mode of permagnetic synchronous motor, and the rated speed of permagnetic synchronous motor is generally about 3000rpm, maximum speed is about 6000, need to install gearbox additional equally, by adjusting the gear of gearbox, satisfy the demand under the different operating modes of car load.
The utility model content
The purpose of this utility model is to be provided for the wide speed-regulation permanent-magnet synchronous motor of electric automobile, and it is lower to solve present motor working efficiency, and volume and weight is large, at vehicle difficulty and the higher problem of cost are installed.
The purpose of this utility model is achieved through the following technical solutions:
The wide speed-regulation permanent-magnet synchronous motor that is used for electric automobile, comprise housing, be separately installed with front end housing and rear end cap at the two ends of housing, in enclosure interior stator is installed, between front end housing and rear end cap, armature spindle is installed, on armature spindle, be set with at least two rotor module, spacer ring is installed between the rotor module, between rotor module and front end housing and rotor module and rear end cap, gimbal is installed all.By the rotor module at least two of armature spindle installations, under the prerequisite that does not change radial dimension, can be by increasing the quantity of rotor module 5, the length that increases as required simultaneously stator 3 increases output torque and the power of motor, greatly improved the matching of motor, and its diameter is constant, is convenient to reduce the space, it is lower to have solved present motor working efficiency, and volume and weight is large, at vehicle difficulty and the higher problem of cost are installed.
Described rotor module comprises rotor core, rotor core is formed by silicon steel plate stacking and fixes with rivet, axis at rotor core is provided with the pilot hole that is connected for armature spindle, be provided with a plurality of through holes parallel with the axis of rotor core at described rotor core, in through hole inside magnet steel be installed.Rotor core is combined by the silicon steel sheet stack, compress by the silicon steel sheet of rivet with stack, fixing, be provided with a plurality of through holes parallel with the axis of rotor core at rotor core, in through hole inside magnet steel is installed, the mode of permanent magnet with respect to traditional permanent magnet machine rotor integral body, not only can improve the intensity of rotor core, and magnetic circuit is more rigorous, realistic application, that is: the passage of magnetic circuit, magnetic flux, magnetic field intensity etc. parameter can better be controlled and adjust, by optimizing structure and the magnetic structure of rotor, reduce air-gap field intensity, weaken permanent-magnet magnetic resistance, finally reach the maximum speed that improves motor, improve the purpose of the speed adjustable range of motor, so that the permanent power bracket of permagnetic synchronous motor is widened greatly, speed adjustable range can reach four times of base speed, integrates low rotation speed large torque and than advantages such as speed governing in Daheng's power bracket, has overcome the many disadvantages of at present existing motor thereby it is become.
Between the outside of described magnet steel and through-hole side wall, be filled with epoxy resin.
Be provided with the assembling bar that the keyway with armature spindle is complementary at described pilot hole sidewall.Further, by the assembling bar is set at pilot hole, the assembling bar matches with keyway on the armature spindle, has overcome rotor core in the course of the work with respect to the rotation of armature spindle circumferencial direction, has further increased moment of torsion.
Be connected with rear end cap with front end housing by bearing respectively at described armature spindle, between the bearing of armature spindle and front end housing, sealing ring be installed.
The position that is positioned at rear end cap at armature spindle is equipped with position transducer.
The utility model compared with prior art has following advantage and beneficial effect:
1 the utility model is used for the wide speed-regulation permanent-magnet synchronous motor of electric automobile, by the rotor module at least two of armature spindle installations, under the prerequisite that does not change radial dimension, can be by increasing the quantity of rotor module 5, the length that increases as required simultaneously stator 3 increases output torque and the power of motor, greatly improved the matching of motor, and its diameter is constant, be convenient to reduce the space, it is lower to have solved present motor working efficiency, and volume and weight is large, at vehicle difficulty and the higher problem of cost are installed.
2 the utility model are used for the wide speed-regulation permanent-magnet synchronous motor of electric automobile, be provided with a plurality of through holes parallel with the axis of rotor core at rotor core, in through hole inside magnet steel is installed, the mode of permanent magnet with respect to traditional permanent magnet machine rotor integral body, not only can improve the intensity of rotor core, and magnetic circuit is more rigorous, realistic application, the passage of magnetic circuit, magnetic flux, magnetic field intensity etc. parameter can better be controlled and adjust, by optimizing structure and the magnetic structure of rotor, reduce air-gap field intensity, weaken permanent-magnet magnetic resistance, finally reach the maximum speed that improves motor, improve the purpose of the speed adjustable range of motor, so that the permanent power bracket of permagnetic synchronous motor is widened greatly, speed adjustable range can reach four times of base speed, thereby it is become integrates low rotation speed large torque and than advantages such as speed governing in Daheng's power bracket, has overcome the many disadvantages of at present existing motor;
3 the utility model are used for the wide speed-regulation permanent-magnet synchronous motor of electric automobile, by the assembling bar is set at pilot hole, the assembling bar matches with keyway on the armature spindle, has overcome rotor core in the course of the work with respect to the rotation of armature spindle circumferencial direction, has further increased moment of torsion.
Description of drawings
Fig. 1 is that the utility model partly cuts open structural representation;
Fig. 2 is the utility model rotor module assembling schematic diagram.
Mark and corresponding parts title in the accompanying drawing:
The 1-front end housing, the 2-housing, the 3-stator, the 4-spacer ring, the 5-rotor module, the 6-rear end cap, the 7-position transducer, the 8-bearing, the 9-gimbal, the 10-sealing ring, the 11-armature spindle, the 12-rivet, the 13-rotor core, the 14-magnet steel, the 15-through hole, 16-assembles bar.
Embodiment
The utility model is described in further detail below in conjunction with embodiment, but execution mode of the present utility model is not limited to this.
Embodiment
Shown in Fig. 1 to 2, the utility model is used for the wide speed-regulation permanent-magnet synchronous motor of electric automobile, comprise housing 2, housing 2 can adopt air-cooled shell-type, it also can be water-cooled, be separately installed with front end housing 1 at the two ends of housing 2, and rear end cap 6, in housing 2 inside stator 3 is installed, the length of stator 3 is decided according to the motor length of reality, can change, with realistic application, on front end housing 1 and rear end cap 6, bearing 8 is installed all, armature spindle 11 is installed between two bearings 8, be set with three rotor module 5 at armature spindle 11, spacer ring 4 is installed between the rotor module 5, at rotor module 5 and front end housing 1, and between rotor module 5 and the rear end cap 6 gimbal 9 is installed all, between the bearing 8 of armature spindle 11 and front end housing 1 sealing ring 10 is installed, the termination that is positioned at rear end cap 6 at armature spindle 11 is equipped with position transducer 7; Wherein rotor module 5 comprises rotor core 13, rotor core 13 is formed by silicon steel plate stacking and is fixing with rivet 12, axis at rotor core 13 is provided with the pilot hole that is connected for armature spindle, is provided with the assembling bar 16 that the keyway with armature spindle is complementary at the pilot hole sidewall; Be provided with a plurality of through holes parallel with the axis of rotor core 13 15 at rotor core 13, in through hole 15 inside magnet steel 14 be installed, between the outside of magnet steel 14 and through hole 15 sidewalls, be filled with epoxy resin.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction, any simple modification, the equivalent variations on every foundation technical spirit of the present utility model above embodiment done all fall within the protection range of the present utility model.
Claims (6)
1. the wide speed-regulation permanent-magnet synchronous motor that is used for electric automobile, comprise housing (2), be separately installed with front end housing (1) at the two ends of housing (2), and rear end cap (6), in housing (2) inside stator (3) is installed, between front end housing (1) and rear end cap (6), armature spindle (11) is installed, it is characterized in that: on armature spindle (11), be set with at least two rotor module (5), spacer ring (4) is installed, at rotor module (5) and front end housing (1) between the rotor module (5), and between rotor module (5) and the rear end cap (6) gimbal (9) is installed all.
2. the wide speed-regulation permanent-magnet synchronous motor for electric automobile according to claim 1, it is characterized in that: described rotor module (5) comprises rotor core (13), rotor core (13) is formed by silicon steel plate stacking and is fixing with rivet (12), axis at rotor core (13) is provided with the pilot hole that is connected for armature spindle, it is characterized in that: be provided with a plurality of through holes (15) parallel with the axis of rotor core (13) at described rotor core (13), in through hole (15) inside magnet steel (14) be installed.
3. the wide speed-regulation permanent-magnet synchronous motor for electric automobile according to claim 2 is characterized in that: be filled with epoxy resin between the outside of described magnet steel (14) and through hole (15) sidewall.
4. the wide speed-regulation permanent-magnet synchronous motor for electric automobile according to claim 3 is characterized in that: be provided with the assembling bar (16) that the keyway with armature spindle is complementary at described pilot hole sidewall.
5. the described wide speed-regulation permanent-magnet synchronous motor for electric automobile of any one in 4 according to claim 1, it is characterized in that: be connected 6 with front end housing (1) with rear end cap by bearing (8) respectively at described armature spindle (11)) be connected, between the bearing (8) of armature spindle (11) and front end housing (1), sealing ring (10) is installed.
6. the described wide speed-regulation permanent-magnet synchronous motor for electric automobile of any one in 4 according to claim 1, it is characterized in that: the position that is positioned at rear end cap (6) at armature spindle (11) is equipped with position transducer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203731363U CN202679193U (en) | 2012-07-31 | 2012-07-31 | Electric automobile permanent magnet synchronous motor with wide speed regulation range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203731363U CN202679193U (en) | 2012-07-31 | 2012-07-31 | Electric automobile permanent magnet synchronous motor with wide speed regulation range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202679193U true CN202679193U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203731363U Expired - Fee Related CN202679193U (en) | 2012-07-31 | 2012-07-31 | Electric automobile permanent magnet synchronous motor with wide speed regulation range |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202679193U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208592A (en) * | 2016-07-29 | 2016-12-07 | 深圳市航天电机系统有限公司 | Inhale yarn blower fan brushless electric machine |
| CN106300766A (en) * | 2016-08-31 | 2017-01-04 | 无锡太昌精密机械有限公司 | Easy-to-dismount electric machine casing and the assembling structure of front motor cover |
-
2012
- 2012-07-31 CN CN2012203731363U patent/CN202679193U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208592A (en) * | 2016-07-29 | 2016-12-07 | 深圳市航天电机系统有限公司 | Inhale yarn blower fan brushless electric machine |
| CN106300766A (en) * | 2016-08-31 | 2017-01-04 | 无锡太昌精密机械有限公司 | Easy-to-dismount electric machine casing and the assembling structure of front motor cover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20210731 |