CN109951040A - Interval magnetic pole combined type permanent magnet drive motor for electric vehicle - Google Patents
Interval magnetic pole combined type permanent magnet drive motor for electric vehicle Download PDFInfo
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- CN109951040A CN109951040A CN201910329643.3A CN201910329643A CN109951040A CN 109951040 A CN109951040 A CN 109951040A CN 201910329643 A CN201910329643 A CN 201910329643A CN 109951040 A CN109951040 A CN 109951040A
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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 present invention provides a kind of interval magnetic pole combined type permanent magnet drive motor for electric vehicle, belongs to motor in electric automobile technical field of electric appliances.It is made of drive end bearing bracket, rear end cap, casing, rotor, stator, rotor includes rotor core, group of magnets, magnet isolation tank, each group of magnets includes two piece of first magnet and one piece of second magnet, second magnet is placed in the middle lower end of two neighboring first magnet, the magnetic field and the first magnet and the second magnet that magnetic field in driving motor air gap is provided by magnet itself the magnetic field that is formed of aggregation that influences each other provide jointly, directly facing air gap, permanent magnetism utilization rate is high in the magnetic field of generation.
Description
Technical field
The present invention provides a kind of interval magnetic pole combined type permanent magnet drive motor for electric vehicle, belongs to motor in electric automobile electricity
Device technical field.
Background technique
The rotor of the permanent magnet drive motor used on electric car at present mostly uses greatly uniform field structure, such as existing skill
Art, patent name: hybrid permanent magnet and Electromagnetic heating excitation generator, the patent No.: ZL201210119304.0 discloses following skill
Art scheme, p-m rotor include the first rectangle magnet steel, non-magnetic slot wedge, the second rectangle magnet steel, and the first rectangle magnet steel is placed on diameter
Into rectangular channel, the second rectangle magnet steel is placed in the tangential rectangular channel between two neighboring radial rectangular channel inner end, the structure
Second magnet steel of rotor is placed between two neighboring first magnet steel inner end, and to prevent magnet steel leakage field, the second magnet steel is perpendicular to straight
Length on diameter direction is approximately equal to the distance between two neighboring first magnet steel inner end, causes permanent magnet to waste, material use
Rate is low, and the second magnet steel is placed in inner end, and the ability for assembling magnetic field is weak, and back-emf harmonic wave is big, and driving motor overall efficiency is low, makes
It is needed further improvement with performance.
Summary of the invention
Drawbacks described above can be overcome the object of the present invention is to provide a kind of, and the magnetic field in driving motor air gap is mentioned by magnet itself
The magnetic field of confession and the first magnet and the second magnet influence each other aggregation formed magnetic field provide jointly, the direct face in the magnetic field of generation
To air gap, the high magnetic pole combined type permanent magnet drive motor in interval for electric vehicle of stock utilization, technology contents are as follows:
Interval magnetic pole combined type permanent magnet drive motor for electric vehicle, by rotor, drive end bearing bracket, rear end cap, casing, stator, axis group
At, it is characterised in that: rotor includes rotor core, group of magnets, magnet isolation tank；
It is evenly equipped with even number group of magnets on rotor core circumferencial direction, each group of magnets includes two piece of first magnet and one piece the
Two magnet, each group of magnets is symmetrical about the diametrical direction of rotor core, the corresponding rotor core outer circle arc length of each group of magnets
Greater than rotor core outer circle arc length corresponding between two neighboring group of magnets；
The distance between two piece of first magnet outer end is greater than the distance between two piece of first magnet inner end, the outside of the first magnet with
It is not connected between rotor core outer circle, the first magnet cross section is in rectangle；
Second magnet is set at the inside of group of magnets, and the distance between the second magnetic blow out centre and rotor core center are less than first
The distance between magnetic blow out centre and rotor core center, the distance between the second magnetic blow out centre and rotor core center are greater than first
Magnet is close to the distance between the bottom center of shaft side and rotor core center, and the second magnet is on perpendicular to diametrical direction
Length be less than two neighboring first magnet inner end between length, the second magnet cross section be in rectangle；
Magnet isolation tank is set between the second magnet and adjacent first magnet inner end, and magnet isolation tank is connect with the second magnet, magnet isolation tank with
The connection of first magnet, magnet isolation tank are in rectangle；
The second magnet in the rotor core perpendicular to the length in diametrical direction be two neighboring second magnet inner end it
Between length half；
The polarity on the outside of two piece of first magnet in each group of magnets of the rotor core and the polarity phase on the outside of the second magnet
Together, the polarity on the outside of the first magnet in two group of magnets of arbitrary neighborhood is identical；
The magnetizing direction thickness of second magnet is less than the magnetizing direction thickness of first magnet.
Working principle: when driving motor is passed through by three-phase inverter after the three-phase alternating current of pulsewidth modulation, driving motor
Stator generates space rotating magnetic field, it and magnetic field interaction caused by rotor, rotor generate and stator winding rotating excitation field
The consistent rotating torques in direction rotate driving motor rotor, and then drive electric car operation.
Compared with prior art, the present invention while the second magnet makes up every pole air gap waveform intermediate recess problem, it can
Collect the first magnet segment magnetic field to increase operation rate, moreover it is possible to repel the first magnet segment magnetic field and preferably be dispersed in single magnetic
Pole solves magnet waste, and reliability is low, problem at high cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the p-m rotor sectional view of embodiment illustrated in fig. 1.
In figure: 1, axis 2, drive end bearing bracket 3, the first magnet 4, the second magnet 5, casing 6, stator 7, rotor iron
Core 8, magnet isolation tank 9, rear end cap.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings:
Interval magnetic pole combined type permanent magnet drive motor for electric vehicle, by rotor, drive end bearing bracket 2, rear end cap 9, casing 5, stator 6,
Axis 1 forms, it is characterised in that: rotor includes rotor core 7, group of magnets, magnet isolation tank 8；
Even number group of magnets is evenly equipped on rotor core circumferencial direction, each group of magnets includes two piece of first magnet 3 and one piece
Second magnet 4, each group of magnets is symmetrical about the diametrical direction of rotor core 7, corresponding 7 outer circle of rotor core of each group of magnets
Arc length is greater than corresponding 7 outer circle arc length of rotor core between two neighboring group of magnets；
The distance between two piece of first 3 outer end of magnet is greater than the distance between two piece of first 3 inner end of magnet, the first magnet 3 it is outer
It is not connected between 7 outer circle of side and rotor core, 3 cross section of the first magnet is in rectangle；
Second magnet 4 is set at the inside of group of magnets, and the distance between 4 center of the second magnet and 7 center of rotor core are less than
The distance between first magnet, 3 center and 7 center of rotor core, the distance between 4 center of the second magnet and 7 center of rotor core
Greater than the first magnet 3 close to the distance between the bottom center of shaft side and 7 center of rotor core, the second magnet 4 is vertical
It is less than the length between two neighboring first magnet, 3 inner end in the length in diametrical direction, 4 cross section of the second magnet is in rectangle；
Magnet isolation tank 8 is set between the second magnet 4 and adjacent first magnet, 3 inner end, and magnet isolation tank 8 is connect with the second magnet 4, every magnetic
Slot 8 is connect with the first magnet 3, and magnet isolation tank 8 is in rectangle；
The second magnet 4 in the rotor core 7 is being two neighboring second magnet, 4 inner end perpendicular to the length in diametrical direction
Between length half；
The polarity in 4 outside of polarity and the second magnet in two piece of first magnet, 3 outside in each group of magnets of the rotor core 7
Identical, the polarity in 3 outside of the first magnet in two group of magnets of arbitrary neighborhood is identical；
The magnetizing direction thickness of second magnet 4 is less than the magnetizing direction thickness of first magnet 3.
Claims (4)
1. a kind of interval magnetic pole combined type permanent magnet drive motor for electric vehicle by rotor, drive end bearing bracket, rear end cap, casing, is determined
Son, axis composition, it is characterised in that: rotor includes rotor core, group of magnets, magnet isolation tank；
Be evenly equipped with even number group of magnets on the rotor core circumferencial direction, each group of magnets include two piece of first magnet and
One piece of second magnet, each group of magnets is symmetrical about the diametrical direction of rotor core, outside the corresponding rotor core of each group of magnets
Circular arc is long to be greater than corresponding rotor core outer circle arc length between two neighboring group of magnets；
The distance between described two piece of first magnet outer end is greater than the distance between described two piece of first magnet inner end, and described first
It is not connected between the outside and rotor core outer circle of magnet, first magnet cross section is in rectangle；
Second magnet is set at the inside of the group of magnets, second magnetic blow out centre and the rotor core center it
Between distance be less than the distance between first magnetic blow out centre and the rotor core center, second magnetic blow out centre and institute
State bottom center and the rotor core of the distance between the rotor core center greater than first magnet close to shaft side
The distance between center, second magnet perpendicular to the length in diametrical direction be less than two neighboring first magnet inner end it
Between length, the second magnet cross section be in rectangle；
The magnet isolation tank is set between second magnet and the adjacent first magnet inner end, the magnet isolation tank and described the
One magnet, second magnet are all connected with, and magnet isolation tank is in rectangle.
2. interval magnetic pole combined type permanent magnet drive motor for electric vehicle according to claim 1, it is characterised in that: described
Second magnet is in the half perpendicular to the length between adjacent two piece of second magnet inner end of the length in diametrical direction.
3. interval magnetic pole combined type permanent magnet drive motor for electric vehicle according to claim 1, it is characterised in that: described
The polarity on the outside of two piece of first magnet in each group of magnets of rotor core is identical with the polarity on the outside of the second magnet, any phase
The polarity on the outside of the first magnet in adjacent two group of magnets is identical.
4. interval magnetic pole combined type permanent magnet drive motor for electric vehicle according to claim 1, it is characterised in that: described
The magnetizing direction thickness of second magnet is less than the magnetizing direction thickness of first magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910329643.3A CN109951040A (en) | 2019-04-23 | 2019-04-23 | Interval magnetic pole combined type permanent magnet drive motor for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910329643.3A CN109951040A (en) | 2019-04-23 | 2019-04-23 | Interval magnetic pole combined type permanent magnet drive motor for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109951040A true CN109951040A (en) | 2019-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910329643.3A Pending CN109951040A (en) | 2019-04-23 | 2019-04-23 | Interval magnetic pole combined type permanent magnet drive motor for electric vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN109951040A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020108789A1 (en) | 2020-03-30 | 2021-09-30 | Hiwin Mikrosystem Corp. | Rotor structure of a permanent magnet motor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202183644U (en) * | 2011-08-22 | 2012-04-04 | 高国华 | Permanent magnet ring |
| CN102664502A (en) * | 2012-04-21 | 2012-09-12 | 山东理工大学 | Mixed permanent magnet and electromagnetism compound excitation generator |
| CN103762765A (en) * | 2014-02-18 | 2014-04-30 | 山东理工大学 | Tangential and radial resultant magnetic field embedded permanent magnet rotor driving motor |
| CN105743312A (en) * | 2016-05-13 | 2016-07-06 | 山东理工大学 | Brushless electromagnetic and invisible magnetic pole composite excitation driving motor |
| CN105958779A (en) * | 2016-05-11 | 2016-09-21 | 山东理工大学 | Built-in double-radial permanent magnet steel drive motor for electric automobiles |
| EP3410574A1 (en) * | 2017-06-02 | 2018-12-05 | Hamilton Sundstrand Corporation | Hybrid synchronous machines |
| CN208241424U (en) * | 2018-05-08 | 2018-12-14 | 珠海格力电器股份有限公司 | Rotor structure, permanent magnetism assist in synchronization reluctance motor and electric car |
| CN109088494A (en) * | 2018-08-14 | 2018-12-25 | 东南大学 | A kind of built-in hybrid permanent magnet memory electrical machine of localized magnetic circuit parallel connection type |
-
2019
- 2019-04-23 CN CN201910329643.3A patent/CN109951040A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202183644U (en) * | 2011-08-22 | 2012-04-04 | 高国华 | Permanent magnet ring |
| CN102664502A (en) * | 2012-04-21 | 2012-09-12 | 山东理工大学 | Mixed permanent magnet and electromagnetism compound excitation generator |
| CN103762765A (en) * | 2014-02-18 | 2014-04-30 | 山东理工大学 | Tangential and radial resultant magnetic field embedded permanent magnet rotor driving motor |
| CN105958779A (en) * | 2016-05-11 | 2016-09-21 | 山东理工大学 | Built-in double-radial permanent magnet steel drive motor for electric automobiles |
| CN105743312A (en) * | 2016-05-13 | 2016-07-06 | 山东理工大学 | Brushless electromagnetic and invisible magnetic pole composite excitation driving motor |
| EP3410574A1 (en) * | 2017-06-02 | 2018-12-05 | Hamilton Sundstrand Corporation | Hybrid synchronous machines |
| CN208241424U (en) * | 2018-05-08 | 2018-12-14 | 珠海格力电器股份有限公司 | Rotor structure, permanent magnetism assist in synchronization reluctance motor and electric car |
| CN109088494A (en) * | 2018-08-14 | 2018-12-25 | 东南大学 | A kind of built-in hybrid permanent magnet memory electrical machine of localized magnetic circuit parallel connection type |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020108789A1 (en) | 2020-03-30 | 2021-09-30 | Hiwin Mikrosystem Corp. | Rotor structure of a permanent magnet motor |
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Application publication date: 20190628 |
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| RJ01 | Rejection of invention patent application after publication |