CN105811721A - Wheel drive motor with built-in permanent magnet steel and invisible magnetic poles for electric automobile - Google Patents
Wheel drive motor with built-in permanent magnet steel and invisible magnetic poles for electric automobile Download PDFInfo
- Publication number
- CN105811721A CN105811721A CN201610311821.6A CN201610311821A CN105811721A CN 105811721 A CN105811721 A CN 105811721A CN 201610311821 A CN201610311821 A CN 201610311821A CN 105811721 A CN105811721 A CN 105811721A
- Authority
- CN
- China
- Prior art keywords
- magnet steel
- rotor core
- rotor
- pole
- 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
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Classifications
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- 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
- H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
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- 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
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- 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
- H02K21/021—Means for mechanical adjustment of the excitation flux
- H02K21/028—Means for mechanical adjustment of the excitation flux by modifying the magnetic circuit within the field or the armature, e.g. by using shunts, by adjusting the magnets position, by vectorial combination of field or armature sections
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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 wheel drive motor with built-in permanent magnet steel and invisible magnetic poles for an electric automobile, and belongs to the technical field of electric automobile motors and electric appliances. The wheel drive motor comprises a shaft, a front end cover, a rear end cover, a wheel case, a rotor, a stator and a stator bracket, wherein the rectangular permanent magnet steel is embedded into first rectangular slots and second rectangular slots respectively; a magnetic field of the rotor of the wheel drive motor is provided by the permanent magnet steel; and the structure is a rotor flux bypass structure. The problem that the permanent magnet steel generates irreversible demagnetization under the effect of armature reaction of an impulse current can be effectively solved; the condition that the permanent magnet steel is not demagnetized is ensured; an electrical exciting winding is avoided; electric energy consumption is low; a carbon brush or a mechanical commutator is avoided; the fault rate is low; and the wheel drive motor has the characteristics of being compact in structure, reliable to work and the like.
Description
Technical field
The present invention provides a kind of built-in permanent-magnet steel of electric automobile and hidden magnetic pole hub driven motor, belongs to motor in electric automobile technical field of electric appliances.
Background technology
Current and the matching used drive motor of electric automobile mostly adopts the direct current generator with carbon brush and mechanical commutator, although DC motor structure is simple, controllability is high, speed-regulating range width, control circuit is relatively easy, less costly, but owing to the magnetic field of direct-drive motor is produced by electricity Exciting Windings for Transverse Differential Protection, power consumption is many, delivery efficiency is low, additionally, due to there is carbon brush and mechanical commutator, not only limit the raising of drive motor overload capacity and speed, if long-play, certainly will be required frequent maintenance and replacement carbon brush and diverter, therefore direct current generator energy consumption is big, fault rate is high, 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, the rotor field of hub driven motor is provided by permanent-magnet steel, few without electricity Exciting Windings for Transverse Differential Protection, power consumption, the non-carbonate built-in permanent-magnet steel of electric automobile and hidden magnetic pole hub driven motor with mechanical commutator, failure rate is low, its technology contents is:
The built-in permanent-magnet steel of electric automobile and hidden magnetic pole hub driven motor are made up of axle, drive end bearing bracket, rear end cap, hub-type casing, rotor, stator, stator support, it is characterised in that: hub driven motor rotor is hidden magnetic pole p-m rotor；
nullHidden magnetic pole p-m rotor is by the first rectangle permanent-magnet steel、Second rectangle permanent-magnet steel、Rotor core、Hub-type casing、Form every magnetic air gap，Rotor core is evenly equipped with and multiple runs through rotor core thickness and the positive "eight" shape groove formed by two the first rectangular channels，It is provided with through rotor core thickness and the inverted "eight" shape groove formed by two the second rectangular channels in the middle of the positive "eight" shape groove outer end of two the first rectangular channel formation，The inner of two the second rectangular channels of the inverted "eight" shape groove formed does not connect，The inner of first rectangular channel does not connect with the inner circle of rotor core，Jointly be provided with through in the outer end of the outer end of each first rectangular channel and adjacent second rectangular channel rotor core thickness every magnetic air gap，Every the inner of magnetic air gap, the outer end of outer end with the first rectangular channel and the second rectangular channel all connects，Do not connect between the outer end and the cylindrical of rotor core of magnetic air gap，Adjacent does not connect every magnetic air gap，Identical two panels the first rectangle permanent-magnet steel is respectively placed in the positive "eight" shape groove formed by two the first rectangular channels of rotor core and the inner side of positive "eight" shape that two panels the first rectangle permanent-magnet steel is formed is N pole，Identical two panels the second rectangle permanent-magnet steel is respectively placed in the inverted "eight" shape groove formed by two the second rectangular channels on rotor core and the outside of inverted "eight" shape that two panels the second rectangle permanent-magnet steel is formed is N pole，The S pole of the first rectangle permanent-magnet steel and the S pole of the second rectangle permanent-magnet steel are guided to each through rotor core on the rotor core of the mid portion of the positive "eight" shape groove that adjacent two are formed by two the first rectangular channels，Form the S pole of hidden magnetic pole，Rotor core is fixed in the inner circle of hub-type casing.
Operation principle:When permanent magnetism hub driven motor passes into by three-phase inverter after the three-phase alternating current of pulsewidth modulation, hub driven motor stator produces a space rotating magnetic field, it is magnetic field interaction produced by with rotor permanent magnet steel, rotor produces the rotating torques consistent with stator winding rotating excitation field direction, make hub driven motor p-m rotor rotate, and then drive electric automobile to run.
The present invention is compared with prior art, rectangle permanent-magnet steel is embedded in the first rectangular channel and the second rectangular channel respectively, hub driven motor rotor field is provided by permanent-magnet steel, and it is few without electricity Exciting Windings for Transverse Differential Protection, power consumption, there is no carbon brush and mechanical commutator, failure rate is low, there is the features such as efficiency height, compact conformation, reliable operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the rotor profiles figure of embodiment illustrated in fig. 1.
In figure: 1, axle 2, drive end bearing bracket 3, rotor core the 4, first rectangle permanent-magnet steel 5, hub-type casing 6, stator 7, stator support 8, rear end cap 9, every magnetic air gap the 10, second rectangle permanent-magnet steel.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
The built-in permanent-magnet steel of electric automobile and hidden magnetic pole hub driven motor are made up of axle 1, drive end bearing bracket 2, rear end cap 8, hub-type casing 5, rotor, stator 6, stator support 7, it is characterised in that: hub driven motor rotor is hidden magnetic pole p-m rotor；
nullHidden magnetic pole p-m rotor is by the first rectangle permanent-magnet steel 4、Second rectangle permanent-magnet steel 10、Rotor core 3、Hub-type casing 5、Form every magnetic air gap 9，Rotor core 3 is evenly equipped with and multiple runs through rotor core 3 thickness and the positive "eight" shape groove formed by two the first rectangular channels，It is provided with through rotor core 3 thickness and the inverted "eight" shape groove formed by two the second rectangular channels in the middle of the positive "eight" shape groove outer end of two the first rectangular channel formation，The inner of two the second rectangular channels of the inverted "eight" shape groove formed does not connect，The inner of first rectangular channel does not connect with the inner circle of rotor core 3，Jointly be provided with through in the outer end of the outer end of each first rectangular channel and adjacent second rectangular channel rotor core 3 thickness every magnetic air gap 9，Every the inner of magnetic air gap 9, the outer end of outer end with the first rectangular channel and the second rectangular channel all connects，Do not connect between the outer end of magnetic air gap 9 with the cylindrical of rotor core 3，Adjacent does not connect every magnetic air gap 9，Identical two panels the first rectangle permanent-magnet steel 4 is respectively placed in the positive "eight" shape groove formed by two the first rectangular channels of rotor core 3 and the inner side of positive "eight" shape that two panels the first rectangle permanent-magnet steel 4 is formed is N pole，Identical two panels the second rectangle permanent-magnet steel 10 is respectively placed in the inverted "eight" shape groove formed by two the second rectangular channels on rotor core 3 and the outside of inverted "eight" shape that two panels the second rectangle permanent-magnet steel 10 is formed is N pole，The S pole of the first rectangle permanent-magnet steel 4 and the S pole of the second rectangle permanent-magnet steel 10 are guided to each through rotor core 3 on the rotor core 3 of the mid portion of the positive "eight" shape groove that adjacent two are formed by two the first rectangular channels，Form the S pole of hidden magnetic pole，Rotor core 3 is fixed in the inner circle of hub-type casing 5.
Claims (1)
1. the built-in permanent-magnet steel of electric automobile and hidden magnetic pole hub driven motor, it is made up of axle (1), drive end bearing bracket (2), rear end cap (8), hub-type casing (5), rotor, stator (6), stator support (7), it is characterised in that: hub driven motor rotor is hidden magnetic pole p-m rotor；
nullHidden magnetic pole p-m rotor is by the first rectangle permanent-magnet steel (4)、Second rectangle permanent-magnet steel (10)、Rotor core (3)、Hub-type casing (5)、Form every magnetic air gap (9)，Rotor core (3) is evenly equipped with and multiple runs through rotor core (3) thickness and the positive "eight" shape groove formed by two the first rectangular channels，It is provided with through rotor core (3) thickness and the inverted "eight" shape groove formed by two the second rectangular channels in the middle of the positive "eight" shape groove outer end of two the first rectangular channel formation，The inner of two the second rectangular channels of the inverted "eight" shape groove formed does not connect，The inner of first rectangular channel does not connect with the inner circle of rotor core (3)，Jointly be provided with through in the outer end of the outer end of each first rectangular channel and adjacent second rectangular channel rotor core (3) thickness every magnetic air gap (9)，All connect every the outer end of the inner of magnetic air gap (9) with the outer end of the first rectangular channel and the second rectangular channel，Do not connect between the outer end and the cylindrical of rotor core (3) of magnetic air gap (9)，Adjacent does not connect every magnetic air gap (9)，Identical two panels the first rectangle permanent-magnet steel (4) is respectively placed in the positive "eight" shape groove formed by two the first rectangular channels of rotor core (3) and the inner side of positive "eight" shape that two panels the first rectangle permanent-magnet steel (4) is formed is N pole，Identical two panels the second rectangle permanent-magnet steel (10) is respectively placed in the inverted "eight" shape groove formed by two the second rectangular channels on rotor core (3) and the outside of inverted "eight" shape that two panels the second rectangle permanent-magnet steel (10) is formed is N pole，The S pole of the first rectangle permanent-magnet steel (4) and the S pole of the second rectangle permanent-magnet steel (10) are guided to each through rotor core (3) on the rotor core (3) of mid portion of the positive "eight" shape groove that adjacent two are formed by two the first rectangular channels，Form the S pole of hidden magnetic pole，Rotor core (3) is fixed in the inner circle of hub-type casing (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610311821.6A CN105811721A (en) | 2016-05-12 | 2016-05-12 | Wheel drive motor with built-in permanent magnet steel and invisible magnetic poles for electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610311821.6A CN105811721A (en) | 2016-05-12 | 2016-05-12 | Wheel drive motor with built-in permanent magnet steel and invisible magnetic poles for electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105811721A true CN105811721A (en) | 2016-07-27 |
Family
ID=56456748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610311821.6A Pending CN105811721A (en) | 2016-05-12 | 2016-05-12 | Wheel drive motor with built-in permanent magnet steel and invisible magnetic poles for electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105811721A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050200223A1 (en) * | 2004-03-10 | 2005-09-15 | Hitachi, Ltd. | Permanent magnet rotating electric machine and electric car using the same |
| JP2007306735A (en) * | 2006-05-12 | 2007-11-22 | Yaskawa Electric Corp | Permanent magnet motor |
| CN102684439A (en) * | 2012-06-11 | 2012-09-19 | 中国矿业大学 | Reverse salient pole permanent magnet synchronous motor |
| CN103887948A (en) * | 2014-04-10 | 2014-06-25 | 山东理工大学 | Built-in permanent magnet steel hub driving motor of electric vehicle |
| CN104638863A (en) * | 2015-01-23 | 2015-05-20 | 浙江迈雷科技有限公司 | Permanent-magnet synchronous motor |
-
2016
- 2016-05-12 CN CN201610311821.6A patent/CN105811721A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050200223A1 (en) * | 2004-03-10 | 2005-09-15 | Hitachi, Ltd. | Permanent magnet rotating electric machine and electric car using the same |
| JP2007306735A (en) * | 2006-05-12 | 2007-11-22 | Yaskawa Electric Corp | Permanent magnet motor |
| CN102684439A (en) * | 2012-06-11 | 2012-09-19 | 中国矿业大学 | Reverse salient pole permanent magnet synchronous motor |
| CN103887948A (en) * | 2014-04-10 | 2014-06-25 | 山东理工大学 | Built-in permanent magnet steel hub driving motor of electric vehicle |
| CN104638863A (en) * | 2015-01-23 | 2015-05-20 | 浙江迈雷科技有限公司 | Permanent-magnet synchronous motor |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160727 |
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| WD01 | Invention patent application deemed withdrawn after publication |