CN103746483A - Built-in permanent magnet rotor driving motor of electric automobile - Google Patents
Built-in permanent magnet rotor driving motor of electric automobile Download PDFInfo
- Publication number
- CN103746483A CN103746483A CN201410053207.5A CN201410053207A CN103746483A CN 103746483 A CN103746483 A CN 103746483A CN 201410053207 A CN201410053207 A CN 201410053207A CN 103746483 A CN103746483 A CN 103746483A
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- Prior art keywords
- rotor
- magnet steel
- permanent magnet
- permanent
- rectangular channel
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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 provides a built-in permanent magnet rotor driving motor of an electric automobile, and belongs to the technical field of automobile motor appliances. The built-in permanent magnet rotor driving motor comprises a front end housing, a rear end housing, a shell, a rotor and a stator, wherein permanent magnet steel is embedded in a rotor core, and the structure is a rotor magnetic bypass structure which can effectively prevent an irreversible demagnetization problem of the permanent magnet due to ultrahigh temperature or an armature reaction of impulse current, ensure that the permanent magnet steel is free from loss of excitation. The rotor field of the driving motor is provided by the permanent magnet steel, so that the built-in permanent magnet rotor driving motor is free from electric exciting windings, carbon brush and a mechanical rectifier, low in power consumption and failure rate, high in efficiency and power density, obvious in magnetic flux gathering effect, and capable of providing large enough power for the electric automobile.
Description
Technical field
The invention provides the embedded p-m rotor drive motors of a kind of electric automobile, belong to electric motor of automobile technical field of electric appliances.
Background technology
Current and the matching used drive motors of electric automobile mostly adopts the direct current machine with carbon brush and mechanical commutator, although DC motor structure is simple, controllability is high, speed-regulating range width, control circuit is relatively simple, cost is lower, but because the magnetic field of direct-drive motor is produced by electric excitation winding, power consumption is many, power output is little, in addition owing to having carbon brush and mechanical commutator, not only limited the raising of drive motors overload capacity and speed, if long-play, often maintenance be certainly will need and carbon brush and commutator changed, therefore direct current machine energy consumption is large, failure rate is high, its serviceability needs further improvement.
Summary of the invention
The object of this invention is to provide and a kind ofly can overcome above-mentioned defect, the magnetic field of drive motors is provided by permanent-magnet steel, few without electric excitation winding, power consumption, there is no the embedded p-m rotor drive motors of electric automobile of carbon brush and mechanical commutator, failure rate is low, its technology contents is:
The embedded p-m rotor drive motors of electric automobile being comprised of front end housing, rear end cap, casing, rotor, stator, is characterized in that: drive motors rotor is the p-m rotor of embedded tangential magnetic field permanent-magnet steel;
The p-m rotor of tangential magnetic field permanent-magnet steel is by permanent-magnet steel, rotor core, tangential rectangular channel is every magnetic air gap, axle forms, on rotor core, be evenly equipped with the radially rectangular channel that even number runs through rotor core thickness, radially between the outer end of rectangular channel and the cylindrical of rotor core, there is the not connected component of 1.5mm, adjacent two radially between the inner of rectangular channel, be provided with run through rotor core thickness tangential rectangular channel every magnetic air gap, a plurality of tangential rectangular channels are all tangent with same circumference every magnetic air gap, and be not communicated with rectangular channel radially, the minimum range of connected component is not 1.5mm～2mm, the mode that the N utmost point of first block of permanent-magnet steel is extremely relative with the N of another adjacent piece permanent-magnet steel, and the mode that the S utmost point of first block of permanent-magnet steel is extremely relative with the S of another adjacent piece permanent-magnet steel is arranged in the radially rectangular channel of rotor core successively, rotor core is fixed on axle.
operation principle:when permanent magnet drive motor passes into by three-phase inverter after the three-phase alternating current of pulse-width modulation, drive motors stator produces a space rotating magnetic field, the magnetic field interaction that it and rotor permanent magnet steel produce, rotor produces the rotating torques consistent with stator winding rotating magnetic field direction, drive motors p-m rotor is rotated, and then drive electric automobile operation.
The present invention compared with prior art, permanent-magnet steel is embedded in rotor core, this structure is rotor magnetic bypass structure, can effectively prevent that permanent-magnet steel from producing the problem of irreversible demagnetization under excessive temperature or the armature reaction effect at impulse current, guarantee not loss of excitation of permanent-magnet steel, the rotor field of drive motors is provided by permanent-magnet steel, few without electric excitation winding, power consumption, there is no carbon brush and mechanical commutator, failure rate is low, there is high efficiency, high power density and significant magnet accumulating cap, can provide enough large power for electric automobile.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is rotor profiles figure embodiment illustrated in fig. 1.
In figure: 1, rear end cap 2, axle 3, rotor core 4, permanent-magnet steel 5, casing 6, stator 7, tangential rectangular channel are every magnetic air gap 8, front end housing.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
The embedded p-m rotor drive motors of electric automobile being comprised of front end housing 8, rear end cap 1, casing 5, rotor, stator 6, is characterized in that: drive motors rotor is the p-m rotor of embedded tangential magnetic field permanent-magnet steel;
The p-m rotor of tangential magnetic field permanent-magnet steel is by permanent-magnet steel 4, rotor core 3, tangential rectangular channel is every magnetic air gap 7, axle 2 forms, on rotor core 3, be evenly equipped with the radially rectangular channel that even number runs through rotor core 3 thickness, radially between the outer end of rectangular channel and the cylindrical of rotor core 3, there is the not connected component of 1.5mm, adjacent two radially between the inner of rectangular channel, be provided with run through rotor core 3 thickness tangential rectangular channel every magnetic air gap 7, a plurality of tangential rectangular channels are all tangent with same circumference every magnetic air gap 7, and be not communicated with rectangular channel radially, the minimum range of connected component is not 1.5mm～2mm, the mode that the N utmost point of first block of permanent-magnet steel 4 is extremely relative with the N of another adjacent piece permanent-magnet steel 4, and the mode that the S utmost point of first block of permanent-magnet steel 4 is extremely relative with the S of another adjacent piece permanent-magnet steel 4 is arranged in the radially rectangular channel of rotor core 3 successively, rotor core 3 is fixed on axle 2.
Claims (1)
1. the embedded p-m rotor drive motors of electric automobile, is comprised of front end housing (8), rear end cap (1), casing (5), rotor, stator (6), it is characterized in that: drive motors rotor is the p-m rotor of embedded tangential magnetic field permanent-magnet steel;
The p-m rotor of tangential magnetic field permanent-magnet steel is by permanent-magnet steel (4), rotor core (3), tangential rectangular channel is every magnetic air gap (7), axle (2) forms, on rotor core (3), be evenly equipped with the radially rectangular channel that even number runs through rotor core (3) thickness, radially between the cylindrical of the outer end of rectangular channel and rotor core (3), there is the not connected component of 1.5mm, adjacent two radially between the inner of rectangular channel, be provided with run through rotor core (3) thickness tangential rectangular channel every magnetic air gap (7), a plurality of tangential rectangular channels are all tangent with same circumference every magnetic air gap (7), and be not communicated with rectangular channel radially, the minimum range of connected component is not 1.5mm～2mm, the mode that the N utmost point of first block of permanent-magnet steel (4) is extremely relative with the N of adjacent another piece permanent-magnet steel (4), and the mode that the S utmost point of first block of permanent-magnet steel (4) is extremely relative with the S of adjacent another piece permanent-magnet steel (4) is arranged in the radially rectangular channel of rotor core (3) successively, rotor core (3) is fixed on axle (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410053207.5A CN103746483A (en) | 2014-02-18 | 2014-02-18 | Built-in permanent magnet rotor driving motor of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410053207.5A CN103746483A (en) | 2014-02-18 | 2014-02-18 | Built-in permanent magnet rotor driving motor of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103746483A true CN103746483A (en) | 2014-04-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410053207.5A Pending CN103746483A (en) | 2014-02-18 | 2014-02-18 | Built-in permanent magnet rotor driving motor of electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103746483A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846577A (en) * | 2016-05-13 | 2016-08-10 | 山东理工大学 | Electric automobile embedded tangential magnetic field permanent magnet steel driving motor |
| CN105871154A (en) * | 2016-05-12 | 2016-08-17 | 张学义 | Invisible magnetic pole and built-in combined magnetic pole driving motor for electric automobile |
| CN105932803A (en) * | 2016-06-08 | 2016-09-07 | 山东理工大学 | Double-winding six-phase drive motor with tangential embedded permanent magnet rotor |
| CN112865362A (en) * | 2020-12-28 | 2021-05-28 | 珠海格力电器股份有限公司 | Rotor core assembly, rotor and motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1149728C (en) * | 1997-09-29 | 2004-05-12 | 富士通将军股份有限公司 | Permanent magnet rotor type electric motor |
| CN100411281C (en) * | 2002-08-30 | 2008-08-13 | 东洋电机制造株式会社 | Rotor of induction starting synchronous motor |
| CN202059298U (en) * | 2011-05-10 | 2011-11-30 | 无锡新大力电机有限公司 | Rare earth permanent magnet motor |
-
2014
- 2014-02-18 CN CN201410053207.5A patent/CN103746483A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1149728C (en) * | 1997-09-29 | 2004-05-12 | 富士通将军股份有限公司 | Permanent magnet rotor type electric motor |
| CN100411281C (en) * | 2002-08-30 | 2008-08-13 | 东洋电机制造株式会社 | Rotor of induction starting synchronous motor |
| CN202059298U (en) * | 2011-05-10 | 2011-11-30 | 无锡新大力电机有限公司 | Rare earth permanent magnet motor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871154A (en) * | 2016-05-12 | 2016-08-17 | 张学义 | Invisible magnetic pole and built-in combined magnetic pole driving motor for electric automobile |
| CN105846577A (en) * | 2016-05-13 | 2016-08-10 | 山东理工大学 | Electric automobile embedded tangential magnetic field permanent magnet steel driving motor |
| CN105932803A (en) * | 2016-06-08 | 2016-09-07 | 山东理工大学 | Double-winding six-phase drive motor with tangential embedded permanent magnet rotor |
| CN112865362A (en) * | 2020-12-28 | 2021-05-28 | 珠海格力电器股份有限公司 | Rotor core assembly, rotor and motor |
| CN112865362B (en) * | 2020-12-28 | 2022-03-18 | 珠海格力电器股份有限公司 | Rotor core assembly, rotor and motor |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140423 |