CN105958771A - Built-in composite permanent magnet and brushless electromagnetic drive motor for electric automobiles - Google Patents
Built-in composite permanent magnet and brushless electromagnetic drive motor for electric automobiles Download PDFInfo
- Publication number
- CN105958771A CN105958771A CN201610306572.1A CN201610306572A CN105958771A CN 105958771 A CN105958771 A CN 105958771A CN 201610306572 A CN201610306572 A CN 201610306572A CN 105958771 A CN105958771 A CN 105958771A
- Authority
- CN
- China
- Prior art keywords
- magnet steel
- permanent
- rotor
- rotor core
- permanent magnet
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
- H02K1/243—Rotor cores with salient poles ; Variable reluctance rotors of the claw-pole type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
- H02K1/2773—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
- H02K21/04—Windings on magnets for additional excitation ; Windings and magnets for additional excitation
- H02K21/042—Windings on magnets for additional excitation ; Windings and magnets for additional excitation with permanent magnets and field winding both rotating
- H02K21/044—Rotor of the claw pole type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
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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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a built-in composite permanent magnet and brushless electromagnetic drive motor for electric automobiles, and belongs to the technical field of electric automobile motors and appliances. The drive motor is composed of a front end cover, a rear end cover, a case, a rotor, and a stator. Rectangular permanent magnet steel pieces are embedded into radial rectangular slots, and tile-shaped permanent magnet steel pieces are embedded into circular arc slots. The permanent magnet steel pieces can be effectively prevented from generating irreversible demagnetization under the armature reaction effect of impact current, and that the permanent magnet steel pieces do not lose magnetism is ensured. The magnetic field in the air gap of the drive motor is provided jointly by the permanent magnet steel pieces and an electric excitation winding. The magnetic field is strong, and the output power is high.
Description
Technical field
The present invention provides a kind of built-in composite permanet magnet of electric automobile and brushless Electromagnetic Drive motor, belongs to motor in electric automobile
Technical field of electric appliances.
Background technology
The rotor of the permanent magnet drive motor used on electric automobile at present uses the outer damascene structures of permanent magnet mostly, as existing
There is technology, patent name: brushless DC motor rotor, the patent No.: ZL200920116549.1, disclose following technical scheme,
Including rotor core, rotating shaft and permanent magnet, rotor core is made up of punching superposition and is connected, and rotating shaft is fixed with rotor core
Connecting, the outer surface of rotor core is evenly distributed with even number T-shaped voussoir, constitutes slot, permanent magnet pair between adjacent T-shaped voussoir
Should be embedded in slot, the permanent magnet of this construction rotor is directly facing air gap, under the armature-reaction effect of dash current, and may
Producing irreversible demagnetization, permanent magnet once forms irreversible demagnetization, drives electric efficiency to reduce, and power, moment of torsion decline rapidly, its
Serviceability needs further improvement.
Summary of the invention
It is an object of the invention to provide one and can overcome drawbacks described above, drive the magnetic field in motor gas-gap by permanent-magnet steel and electricity
Exciting Windings for Transverse Differential Protection provides jointly, and magnetic field intensity is big, the built-in composite permanet magnet of electric automobile that power density is high and brushless Electromagnetic Drive electricity
Machine, its technology contents is:
The built-in composite permanet magnet of electric automobile and brushless Electromagnetic Drive motor by drive end bearing bracket, rear end cap, casing, rotor with hybrid excitation,
Stator forms, it is characterised in that: rotor with hybrid excitation is by the Lundell electrical excitation rotor of non-carbonate slip ring structure and built-in compound
P-m rotor forms；
Built-in composite permanent magnet rotor is made up of every magnetic air gap axle, rectangle permanent-magnet steel, tile permanent-magnet steel, rotor core, fan annular, turns
It is evenly equipped with even number on sub-iron core and runs through the radial direction rectangular channel of rotor core thickness, the radially outer end of rectangular channel and rotor core
Do not connect between cylindrical, in the middle of the outer end of adjacent two radial direction rectangular channels, be provided with the inner arc surface court running through rotor core thickness
To the arc-shaped slot of rotor core cylindrical, arc-shaped slot does not connects with radially rectangular channel, the two ends of arc-shaped slot and rotor core
Cylindrical between do not connect, be provided with in the inner of each radial direction rectangular channel run through rotor core thickness fan annular every magnetism
Gap, adjacent fan annular does not connects every magnetic air gap, by rectangle permanent-magnet steel according to the N pole of adjacent two panels rectangle permanent-magnet steel and N pole
Relatively, S pole and S extremely relative to mode be sequentially arranged at radially in rectangular channel, then tile permanent-magnet steel is pressed tile permanent-magnet steel inner circle
The mode that polarity that the polarity of cambered surface is formed with adjacent two panels rectangle permanent-magnet steel is identical is sequentially arranged in arc-shaped slot, rotor
Iron core is fitted on axle.
Operation principle: when driving motor to be passed through by three-phase inverter after the three-phase alternating current of pulsewidth modulation, drive motor
Stator produces space rotating magnetic field, and it is magnetic field interaction produced by with rotor, and rotor produces and stator winding rotating excitation field
The rotating torques that direction is consistent, makes driving rotor rotate, and then drives electric automobile to run.
Compared with prior art, rectangle permanent-magnet steel is embedded in radial direction rectangular channel the present invention, and tile permanent-magnet steel is embedded in circle
In arcuate groove, it is possible to effectively prevent permanent-magnet steel from producing irreversible demagnetization under the armature-reaction effect of dash current, it is ensured that permanent magnetism
Steel not loss of excitation, drives the magnetic field in motor gas-gap jointly to be provided by permanent-magnet steel and electrical excitation winding, and magnetic field intensity is big, output
High.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the p-m rotor profile of embodiment illustrated in fig. 1.
In figure: 1, rear end cap 2, axle 3, casing 4, stator 5, tile permanent-magnet steel 6, rotor core 7, fan ring
Shape is every magnetic air gap 8, rectangle permanent-magnet steel 9, drive end bearing bracket.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings:
The built-in composite permanet magnet of electric automobile is turned by drive end bearing bracket 9, rear end cap 1, casing 3, composite excitation with brushless Electromagnetic Drive motor
Son, stator 4 forms, it is characterised in that: rotor with hybrid excitation is by the Lundell electrical excitation rotor of non-carbonate slip ring structure and built-in
Composite permanent magnet rotor forms；
Built-in composite permanent magnet rotor by axle 2, rectangle permanent-magnet steel 8, tile permanent-magnet steel 5, rotor core 6, fan annular every magnetic air gap 7 groups
Become, rotor core 6 be evenly equipped with even number and run through the radial direction rectangular channel of rotor core 6 thickness, radially the outer end of rectangular channel with turn
Do not connect between the cylindrical of sub-iron core 6, be provided with in the middle of the outer end of adjacent two radial direction rectangular channels and run through rotor core 6 thickness
Inner arc surface does not connects towards the arc-shaped slot of rotor core 6 cylindrical, arc-shaped slot with radially rectangular channel, the two ends of arc-shaped slot
And do not connect between the cylindrical of rotor core 6, be provided with the fan running through rotor core 6 thickness in the inner of each radial direction rectangular channel
Annular does not connects every magnetic air gap 7, by rectangle permanent-magnet steel 8 according to adjacent two panels rectangle permanent magnetism every magnetic air gap 7, adjacent fan annular
The N pole of steel 8 and N extremely relative to, S pole and S extremely relative to mode be sequentially arranged at radially in rectangular channel, then tile permanent-magnet steel 5 is pressed
The mode that polarity that the polarity of tile permanent-magnet steel 5 inner arc surface is formed with adjacent two panels rectangle permanent-magnet steel 8 is identical is installed successively
In arc-shaped slot, rotor core 6 is fitted on axle 2.
Claims (1)
1. the built-in composite permanet magnet of electric automobile and a brushless Electromagnetic Drive motor, by drive end bearing bracket (9), rear end cap (1), casing
(3), rotor with hybrid excitation, stator (4) composition, it is characterised in that: rotor with hybrid excitation is by the Lundell of non-carbonate slip ring structure
Electrical excitation rotor and built-in composite permanent magnet rotor composition；
Built-in composite permanent magnet rotor by axle (2), rectangle permanent-magnet steel (8), tile permanent-magnet steel (5), rotor core (6), fan annular every
Magnetic air gap (7) forms, and rotor core (6) is evenly equipped with even number and runs through the radial direction rectangular channel of rotor core (6) thickness, radially square
Do not connect between the outer end of shape groove and the cylindrical of rotor core (6), be provided with in the middle of the outer end of adjacent two radial direction rectangular channels and pass through
Wear the inner arc surface arc-shaped slot towards rotor core (6) cylindrical of rotor core (6) thickness, arc-shaped slot and radially rectangular channel
Do not connect, do not connect between the two ends of arc-shaped slot and the cylindrical of rotor core (6), set in the inner of each radial direction rectangular channel
The fan annular running through rotor core (6) thickness is had not connect, by rectangle every magnetic air gap (7) every magnetic air gap (7), adjacent fan annular
Permanent-magnet steel (8) according to adjacent two panels rectangle permanent-magnet steel (8) N pole and N extremely relative to, S pole and S extremely relative to mode install successively
In radial direction rectangular channel, then tile permanent-magnet steel (5) is pressed the polarity of tile permanent-magnet steel (5) inner arc surface and adjacent two panels rectangle
The mode that polarity that permanent-magnet steel (8) is formed is identical is sequentially arranged in arc-shaped slot, and rotor core (6) is fitted on axle (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610306572.1A CN105958771A (en) | 2016-05-11 | 2016-05-11 | Built-in composite permanent magnet and brushless electromagnetic drive motor for electric automobiles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610306572.1A CN105958771A (en) | 2016-05-11 | 2016-05-11 | Built-in composite permanent magnet and brushless electromagnetic drive motor for electric automobiles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105958771A true CN105958771A (en) | 2016-09-21 |
Family
ID=56914308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610306572.1A Pending CN105958771A (en) | 2016-05-11 | 2016-05-11 | Built-in composite permanent magnet and brushless electromagnetic drive motor for electric automobiles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105958771A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1213207A (en) * | 1997-09-29 | 1999-04-07 | 富士通将军股份有限公司 | Permanent magnet rotor type electric motor |
| JP2007068239A (en) * | 2005-08-29 | 2007-03-15 | Inp Institute Of Technology Co Ltd | Dynamo-electric machine and electromagnetic apparatus |
| US20080265705A1 (en) * | 2003-08-02 | 2008-10-30 | Yukio Kinoshita | Rotary Machine and Electromagnetic Machine |
| CN102664502A (en) * | 2012-04-21 | 2012-09-12 | 山东理工大学 | Mixed permanent magnet and electromagnetism compound excitation generator |
| CN102957240A (en) * | 2011-08-19 | 2013-03-06 | 台达电子企业管理（上海）有限公司 | Motor rotor and rotary motor containing same |
| US20130134820A1 (en) * | 2011-11-29 | 2013-05-30 | Delta Electronics (Shanghai) Co., Ltd. | Rotor and rotary electric machine containing the same |
-
2016
- 2016-05-11 CN CN201610306572.1A patent/CN105958771A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1213207A (en) * | 1997-09-29 | 1999-04-07 | 富士通将军股份有限公司 | Permanent magnet rotor type electric motor |
| US20080265705A1 (en) * | 2003-08-02 | 2008-10-30 | Yukio Kinoshita | Rotary Machine and Electromagnetic Machine |
| JP2007068239A (en) * | 2005-08-29 | 2007-03-15 | Inp Institute Of Technology Co Ltd | Dynamo-electric machine and electromagnetic apparatus |
| CN102957240A (en) * | 2011-08-19 | 2013-03-06 | 台达电子企业管理（上海）有限公司 | Motor rotor and rotary motor containing same |
| US20130134820A1 (en) * | 2011-11-29 | 2013-05-30 | Delta Electronics (Shanghai) Co., Ltd. | Rotor and rotary electric machine containing the same |
| CN102664502A (en) * | 2012-04-21 | 2012-09-12 | 山东理工大学 | Mixed permanent magnet and electromagnetism compound excitation generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160921 |