CN203387385U - Axial-flux coreless permanent magnet motor of assembling-type magnetic pole - Google Patents
Axial-flux coreless permanent magnet motor of assembling-type magnetic pole Download PDFInfo
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- CN203387385U CN203387385U CN201320497892.1U CN201320497892U CN203387385U CN 203387385 U CN203387385 U CN 203387385U CN 201320497892 U CN201320497892 U CN 201320497892U CN 203387385 U CN203387385 U CN 203387385U
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Abstract
The utility model discloses an axial-flux coreless permanent magnet motor of an assembling-type magnetic pole, and the permanent magnet motor comprises a stator armature plate, two rotor discs, a rotating shaft, and a rotor housing. The two rotor discs are respectively equipped with a plurality of groups of assembling-type magnetic poles. The two rotor discs are symmetrically disposed at two sides of the coreless stator armature plate. The stator armature plate and the rotor discs are coaxially installed on the rotating shaft, and a rotor is disposed inside the housing. The assembling-type magnetic poles are pasted on the inner surface of a rotor back iron plate, and are respectively formed by the combination of a plurality of blocks of permanent magnet materials which are made of various types of materials and have different widths. Through the reasonable choosing of permanent magnet materials and the width of a pole arc, an air gap flux density harmonic wave and a back electromotive force harmonic wave can be weakened. The permanent magnet motor provided by the utility model can obtain air gap flux density with a good sinusoidal distribution, reduces loss, improves efficiency, can reduce the application amount of high-price permanent magnet materials, improves the utilization ratio of a permanent magnet, improves the cost performance of a motor, is simple in structure, is easy to assemble, and is applicable to a related drive occasion with fewer requirements for axial dimensions and compact structures.
Description
Technical field
The utility model relates to the magneto technical field, is specifically related to a kind of external rotor internal stator axial magnetic field coreless permanent magnet motor of split mounting type magnetic pole, is the improvement to traditional axial magnetic field permanent magnet motor.
Background technology
Excellent properties due to permanent magnetic material, magneto is applied in household electrical appliance and industrial production more and more widely, in various magneto, the axial magnetic field permanent magnet motor, be called again disc type electric machine, short because thering is axial dimension, lightweight, the characteristics such as volume is little, compact conformation, there is obvious superiority in a lot of particular application, become the focus of research, be mainly used in motion control, be specially adapted on the less equipment of axial dimension requirement, for example, the fan of outdoor machine of air-conditioner, automobile radiators, motor vehicle etc.
Magnetic field in the magneto air gap is produced by permanent magnet, and its flux density magnitude and distribution shape are directly determining the magneto performance, and axial magnetic field coreless permanent magnet motor is no exception.For producing high as far as possible air gap flux density, traditional axial magnetic field coreless permanent magnet motor pole is comprised of several piece equal and opposite in direction, high-performance Ne-Fe-B permanent-magnet material that material is identical.Although the magnetic pole of this form is simple in structure, manufacturing process is simple, have two aspect shortcomings: on the one hand, the air gap flux density waveform harmonics is serious, thereby has affected the electromotive force waveform, makes loss increase, Efficiency Decreasing, degradation; On the other hand, high-performance Ne-Fe-B permanent-magnet material is expensive, causes motor cost high.In order to obtain the air gap flux density of Sine distribution, forefathers have proposed a lot of methods, such as adopting Halbach array permanent magnet form, change permanent magnet polar arc coefficient etc.Yet the Halbach array permanent magnet, its magnetizing direction must be various, certainly will improve like this manufacturing cost of permanent magnet, thereby increase the cost of whole motor, reduced cost performance; Can optimize the air gap flux density waveform although change permanent magnet polar arc coefficient, also reduced the air gap flux density size, thereby affected the output torque simultaneously.
Summary of the invention
The utility model reduces this two requirements in order to meet air gap flux density Sine distribution and motor cost simultaneously, a kind of axial magnetic field coreless permanent magnet motor of split mounting type field structure is proposed, each magnetic pole is assembled by three different permanent magnets that thickness is identical, pole embrace does not wait, price does not wait, this split mounting type field structure is than traditional field structure, not only can reduce the permanent magnet cost, and, by optimal design, can make the air gap flux density waveform be Sine distribution, weaken torque pulsation.
The technical solution adopted in the utility model is:
A kind of axial magnetic field coreless permanent magnet motor of split mounting type magnetic pole is characterized in that: comprises stator armature dish, two rotor disks, rotating shaft and rotor cases, is separately installed with some assembly formula magnetic poles on described two rotor disks,
Described two rotor disks are symmetrically set in the both sides of non iron-core stator armature dish, stator armature dish and rotor disk coaxially are arranged in rotating shaft, two rotor disks all are connected on axle, the stator armature axle is arranged on axle by bearing, install in the enclosure by bearing respectively at the rotating shaft two ends, and the rotor setting in the enclosure.
Every assembly formula magnetic pole is formed by three permanent magnet combinations, and three permanent magnet magnetizing directions are consistent, are axial charging, and two adjacent groups split mounting type magnetic pole magnetizing direction is contrary; On two rotor disks, the split mounting type magnetic pole magnetizing direction of relative position is consistent.
Three permanent magnet thickness of every assembly formula magnetic pole magnetic pole equate; The twice that the permanent magnet polar arc coefficient in centre position is the both sides permanent magnet.
Every assembly formula magnetic pole adopts the permanent magnet of two kinds of pole embraces assembled, and the permanent magnet polar arc system of both sides is identical.
It is the N42 NdFeB material that the permanent magnet in every assembly formula magnetic pole centre position is selected model, and it is the N27 NdFeB material that the permanent magnet of both sides is selected model.
The inner surface that each assembly formula pole piece spacing formula on rotor disk or gapless type stick on rotor disk.
Described stator armature dish adopts the non iron-core structure, directly injection molded by winding, and winding adopts non-overlapped concentrated winding type.
The utility model is by selecting magnet size and permanent magnetic material parameter (remanent magnetism, coercive force) as optimized variable, the present embodiment passes through optimal design, the higher permanent magnet of middle price is selected model N42 NdFeB material (remanent magnetism is about 1.30T, coercive force is about 928kA/m), price low permanent magnet in both sides is selected model N27 NdFeB material (remanent magnetism is about 1.05T, coercive force is about 800kA/m), when the higher magnet size of price is approximately the twice of the low magnet size of both sides price, can produce the field waveform of Sine distribution, the reduced harmonic component.
A kind of split mounting type field structure axial magnetic field coreless permanent magnet motor the utility model proposes, this motor is for the close non-sine of existing conventional axial magnetic field permanent magnet motor gas-gap magnetic, the large shortcoming of harmonic wave and improved, guaranteeing on the basis that the air gap flux density size is certain, reduce high price permanent magnet consumption, add the low price permanent magnet, thereby reduce total permanent magnet cost.By selecting suitable permanent magnetic material and size thereof, also can improve the sine of air gap flux density, the reduced harmonic component.
the beneficial effects of the utility model
1) the magnet steel dish adopts the split mounting type magnet structure, and each magnetic pole is divided into to three parts, and wherein both sides adopt the permanent magnetic material of low price, thereby have reduced high price Nd-Fe-Bo permanent magnet material consumption, have reduced motor cost;
2) by reasonable arrangement permanent magnetic material size, select suitable permanent magnetic material, can obtain at an easy rate the air gap flux density of Sine distribution, reduced harmonic, torque ripple reduction.
The accompanying drawing explanation
Fig. 1 is the split mounting type field structure schematic diagram of motor embodiment of the present utility model;
Fig. 2 is the expanded view of the utility model mean radius place internal structure of motor.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
As shown in Figure 1, the non iron-core axial magnetic field permanent magnet motor of split mounting type magnetic pole of the present utility model, comprise rotor disk 1, split mounting type magnetic pole, non iron-core stator armature dish 4, rotating shaft 5, bearing and rotor case; The both sides of described non iron-core stator armature dish 4 are provided with two symmetric rotor dishes 1, and non iron-core stator armature dish 4 and rotor disk 1 are directly installed in rotating shaft 5.As shown in Figure 2, on described rotor disk 1, be pasted with the split mounting type magnetic pole, the split mounting type magnetic pole is assembled by permanent magnet 2 and two permanent magnets 3, and permanent magnet 2 and two permanent magnets 3 stick on the inner surface of rotor disk 1.In the middle of the split mounting type magnetic pole, adopt a high price N42 Nd-Fe-Bo permanent magnet material 2 and two of both sides low price N27 Nd-Fe-Bo permanent magnet material 3 to combine, the width of permanent magnetic material 2 is approximately the twice of permanent magnetic material 3.On same rotor disk, permanent magnet axial charging N, S are separated by, and vertically, two relative assembly formula magnetic pole magnetizing directions are identical for magnetic flux.
Each utmost point of split mounting type magnetic pole is formed by the combination of three permanent magnets, and these permanent magnets have two kinds of different pole embraces, the permanent magnetic material of two kinds of different prices, consists of.One of centre permanent magnet adopts the permanent magnetic material that price is higher, magnetic is stronger, and two permanent magnets on both sides adopt the permanent magnetic material that prices are lower, magnetic is weak, take full advantage of permanent magnetic material performance, reduces motor assembly originally.
Non iron-core stator armature dish 4 adopts non-overlapped concentrated winding type, directly directly injection molded by non-overlapped concentrated winding, this winding type has advantages of that termination portion is short, easy to process, A, B, the symmetrical placement of C tri-phase windings on stator, be provided with lead-out wire, in order to apply three-phase alternating current.
It should be pointed out that the split mounting type field structure the utility model proposes can be used for, in the magneto of various different structures, being not limited only to the axial magnetic field permanent magnet motor.For those skilled in the art, under the prerequisite that does not break away from the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.In the present embodiment not clear and definite each part all available prior art realized.
Claims (7)
1. the axial magnetic field coreless permanent magnet motor of a split mounting type magnetic pole, it is characterized in that: comprise stator armature dish, two rotor disks, rotating shaft and rotor cases, be separately installed with some assembly formula magnetic poles on described two rotor disks, described two rotor disks are symmetrically set in the both sides of non iron-core stator armature dish, stator armature dish and rotor disk coaxially are arranged in rotating shaft, and the rotor setting in the enclosure.
2. the axial magnetic field coreless permanent magnet motor of split mounting type magnetic pole according to claim 1, it is characterized in that: every assembly formula magnetic pole is arranged and is combined along circular arc by three permanent magnets, three permanent magnet magnetizing directions are consistent, be axial charging, two adjacent groups split mounting type magnetic pole magnetizing direction is contrary; On two rotor disks, the split mounting type magnetic pole magnetizing direction of relative position is consistent.
3. the axial magnetic field coreless permanent magnet motor of split mounting type magnetic pole according to claim 2 is characterized in that: three permanent magnet thickness of every assembly formula magnetic pole equate; The twice that the permanent magnet polar arc coefficient in centre position is both sides permanent magnet polar arc coefficient.
4. according to the axial magnetic field coreless permanent magnet motor of claim 1,2 or 3 described split mounting type magnetic poles, it is characterized in that: every assembly formula magnetic pole adopts the permanent magnet of two kinds of pole embraces assembled, and the permanent magnet polar arc coefficient of both sides is identical.
5. the axial magnetic field coreless permanent magnet motor of split mounting type magnetic pole according to claim 4, it is characterized in that: it is the N42 NdFeB material that the permanent magnet in every assembly formula magnetic pole centre position is selected model, and it is the N27 NdFeB material that the permanent magnetic material of both sides is selected model.
6. the axial magnetic field coreless permanent magnet motor of split mounting type magnetic pole according to claim 1, is characterized in that: the inner surface that each assembly formula pole piece spacing formula on rotor disk or gapless type stick on rotor disk.
7. the axial magnetic field coreless permanent magnet motor of split mounting type magnetic pole according to claim 1 is characterized in that: described stator armature dish adopts the non iron-core structure, directly injection molded by winding, and winding adopts non-overlapped concentrated winding type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320497892.1U CN203387385U (en) | 2013-08-15 | 2013-08-15 | Axial-flux coreless permanent magnet motor of assembling-type magnetic pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320497892.1U CN203387385U (en) | 2013-08-15 | 2013-08-15 | Axial-flux coreless permanent magnet motor of assembling-type magnetic pole |
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| CN203387385U true CN203387385U (en) | 2014-01-08 |
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| CN201320497892.1U Expired - Fee Related CN203387385U (en) | 2013-08-15 | 2013-08-15 | Axial-flux coreless permanent magnet motor of assembling-type magnetic pole |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414301A (en) * | 2013-08-15 | 2013-11-27 | 南京信息工程大学 | Axial magnetic field ironless permanent magnet motor with split mounting type magnetic poles |
| CN104201807A (en) * | 2014-09-19 | 2014-12-10 | 洛阳市贝叶机电有限公司 | Rotor structure of permanent magnet coreless motor |
| CN104218762A (en) * | 2014-09-26 | 2014-12-17 | 洛阳市贝叶机电有限公司 | Mounting structure of rotor and stator of permanent magnet iron-core-free motor |
| CN104218758A (en) * | 2014-09-03 | 2014-12-17 | 洛阳市贝叶机电有限公司 | Permanent magnet coreless brushless motor |
| CN105429409A (en) * | 2015-12-21 | 2016-03-23 | 哈尔滨工业大学 | Composite magnetic pole type axial-flux permanent magnet synchronous motor |
| CN109038887A (en) * | 2018-06-22 | 2018-12-18 | 湖南大学 | A kind of permanent magnet motor secondary units and permanent magnet motor are secondary |
| WO2020147117A1 (en) * | 2019-01-18 | 2020-07-23 | 深圳市善象智能科技企业(有限合伙) | Outer disc type motor with fence type stator |
| CN112688514A (en) * | 2020-12-29 | 2021-04-20 | 福州大学 | Permanent magnet motor with permanent magnet stator and coreless axial magnetic field |
| CN112693553A (en) * | 2021-01-25 | 2021-04-23 | 苏州诺雅电动车有限公司 | Energy storage flywheel balance driving type scooter |
| RU223846U1 (en) * | 2023-11-30 | 2024-03-05 | Федеральное государственное бюджетное образовательно учреждение высшего образования "Уфимский университет науки и технологий" | Electric disk machine with permanent magnets of various magnetizations |
-
2013
- 2013-08-15 CN CN201320497892.1U patent/CN203387385U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414301B (en) * | 2013-08-15 | 2016-05-25 | 南京信息工程大学 | A kind of axial magnetic field coreless permanent magnet motor of pin-connected panel magnetic pole |
| CN103414301A (en) * | 2013-08-15 | 2013-11-27 | 南京信息工程大学 | Axial magnetic field ironless permanent magnet motor with split mounting type magnetic poles |
| CN104218758A (en) * | 2014-09-03 | 2014-12-17 | 洛阳市贝叶机电有限公司 | Permanent magnet coreless brushless motor |
| CN104201807A (en) * | 2014-09-19 | 2014-12-10 | 洛阳市贝叶机电有限公司 | Rotor structure of permanent magnet coreless motor |
| CN104218762A (en) * | 2014-09-26 | 2014-12-17 | 洛阳市贝叶机电有限公司 | Mounting structure of rotor and stator of permanent magnet iron-core-free motor |
| CN105429409B (en) * | 2015-12-21 | 2017-11-03 | 哈尔滨工业大学 | Composite poles formula axial flux permanent magnet synchronous motor |
| CN105429409A (en) * | 2015-12-21 | 2016-03-23 | 哈尔滨工业大学 | Composite magnetic pole type axial-flux permanent magnet synchronous motor |
| CN109038887A (en) * | 2018-06-22 | 2018-12-18 | 湖南大学 | A kind of permanent magnet motor secondary units and permanent magnet motor are secondary |
| CN109038887B (en) * | 2018-06-22 | 2019-09-27 | 湖南大学 | A kind of permanent magnet motor secondary units and permanent magnet motor are secondary |
| WO2020147117A1 (en) * | 2019-01-18 | 2020-07-23 | 深圳市善象智能科技企业(有限合伙) | Outer disc type motor with fence type stator |
| CN112688514A (en) * | 2020-12-29 | 2021-04-20 | 福州大学 | Permanent magnet motor with permanent magnet stator and coreless axial magnetic field |
| CN112693553A (en) * | 2021-01-25 | 2021-04-23 | 苏州诺雅电动车有限公司 | Energy storage flywheel balance driving type scooter |
| RU223846U1 (en) * | 2023-11-30 | 2024-03-05 | Федеральное государственное бюджетное образовательно учреждение высшего образования "Уфимский университет науки и технологий" | Electric disk machine with permanent magnets of various magnetizations |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140108 Termination date: 20150815 |
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| EXPY | Termination of patent right or utility model |