CN207782528U - Rotor assembly and motor - Google Patents
Rotor assembly and motor Download PDFInfo
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- CN207782528U CN207782528U CN201820130130.0U CN201820130130U CN207782528U CN 207782528 U CN207782528 U CN 207782528U CN 201820130130 U CN201820130130 U CN 201820130130U CN 207782528 U CN207782528 U CN 207782528U
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- permanent magnet
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Abstract
The utility model is related to technical field of motors, more particularly, to a kind of rotor assembly and motor.The rotor assembly includes shaft, at least a pair of of permanent magnet on the outside of the shaft；The permanent magnet is slit longitudinally into multiple permanent magnet units, realizes parallel magnetization；It is fixedly connected between the permanent magnet unit of arbitrary neighborhood.The motor includes engine base, the stator positioned at the base inner and the rotor assembly described above that is used cooperatively with the stator.The utility model alleviates the excessive problem of eddy-current loss in the prior art.
Description
Technical field
The utility model is related to technical field of motors, more particularly, to a kind of rotor assembly and motor.
Background technology
In recent years, the advantages that high-speed permanent magnet motor is because of its high power density, efficient and good controllability is increasingly
To the favor of industrial quarters.The development of high-speed electric expreess locomotive nevertheless suffers from the limitation of some technical problems at present.High-speed electric expreess locomotive and common electricity
Machine is compared, and identical number of stator slots lower rotor part surface harmonics pulsation amplitude and frequency increase, and high working frequency makes electric current in winding
Harmonic components increase, therefore high speed rotor of motor eddy-current loss is more much bigger than common electric machine.Rotor eddy current loss mainly by
Caused by the time of stator current and space harmonics and the air-gap permeance variation caused by stator channel opening；The electricity of motor
There is only odd-order harmonic components for stream, and the armature field of fundametal compoment (n=1) synthesis of electric current is synchronous with rotor field, will not
Eddy-current loss is generated in the rotor, and 5 times, 7 times, 11 times, 13 times ... of motor wait time harmonics component to generate in the rotor
A large amount of eddy-current loss is the major part of rotor eddy current loss；When rotor eddy current loss is very serious, rotor permanent magnet can be caused
Body is overheated to demagnetize with irrecoverability；It is therefore desirable to take necessary measure to reduce rotor eddy current loss.
The existing rotor magnetic ring to magnetize usually using sine in the industry reduces when empty load of motor is run since stator slot is opened
Rotor loss caused by mouthful, this method is all very high to the requirement of permanent magnet magnetized and assembled, and for reducing whirlpool
The effect of stream loss is simultaneously bad.
The information for being disclosed in the background technology part is merely intended to deepen the reason to the general background technology of the utility model
Solution, and it is known to those skilled in the art existing to be not construed as recognizing or imply that the information is constituted in any form
Technology.
Utility model content
The first of the utility model is designed to provide a kind of rotor assembly, and it is excessive to alleviate eddy-current loss in the prior art
The problem of.
Rotor assembly provided by the utility model, including：Shaft, at least a pair of of permanent magnet on the outside of the shaft；
The permanent magnet is slit longitudinally into multiple permanent magnet units, realizes parallel magnetization；
It is fixedly connected between the permanent magnet unit of arbitrary neighborhood.
In any of the above-described technical solution, further, bonded by adhesive layer between the permanent magnet.
In any of the above-described technical solution, further, bonded by adhesive layer between the permanent magnet unit.
In any of the above-described technical solution, further, the permanent magnet unit is set as multipair, the multipair permanent magnet unit
It is of same size in the horizontal direction.
In any of the above-described technical solution, further, tangent line is formed between two permanent magnet units of arbitrary neighborhood,
The direction of the tangent line is parallel with the permanent magnet unit generation direction in magnetic field.
In any of the above-described technical solution, further, the permanent magnet unit is set as multipair, the multipair permanent magnet unit
Axis direction along the shaft forms cyclic structure.
Further include balance ring further, the balance ring is set in outside the shaft in any of the above-described technical solution
Side.
The second of the utility model is designed to provide a kind of rotor assembly, and it is excessive to alleviate eddy-current loss in the prior art
The problem of.
Rotor assembly provided by the utility model, including：Shaft, at least a pair of of permanent magnet on the outside of the shaft；
The permanent magnet is slit longitudinally into multiple permanent magnet units, realizes parallel magnetization；
It is detachably connected between the permanent magnet unit of arbitrary neighborhood.
In any of the above-described technical solution, further, the permanent magnet unit is set as multipair, the multipair permanent magnet unit
It is of same size in the horizontal direction.
The third of the utility model is designed to provide a kind of motor, alleviates that eddy-current loss in the prior art is excessive to ask
Topic.
Motor provided by the utility model, including：Engine base coordinates positioned at the stator of the base inner and with the stator
The rotor assembly described above used.
Compared with the existing technology, rotor assembly and motor provided by the utility model have following advantage：
Rotor assembly provided by the utility model, including shaft, at least a pair of of permanent magnet on the outside of shaft；Permanent magnet
Multiple permanent magnet units are slit longitudinally into, realize parallel magnetization；It is fixedly connected between the permanent magnet unit of arbitrary neighborhood.Due to vortex
Loss is generated in permanent magnet outer ring, and permanent magnet in the prior art is integral type cirque structure, the outer surface of permanent magnet
The vortex of large area is will produce, therefore eddy-current loss is very serious.The application includes at least a pair of of permanent magnet, and permanent magnet is by diameter
To cutting into multiple permanent magnet units, therefore the outer surface of each permanent magnet unit will produce the vortex of small area, therefore big by one
Vortex become multiple small vortexs, the eddy-current loss that space-harmonic component generates in the rotor can be effectively reduced, therefore
The excessive problem of eddy-current loss is alleviated, motor efficiency and stability are improved.
Rotor assembly provided by the utility model, including shaft, at least a pair of of permanent magnet on the outside of shaft；Permanent magnet
Multiple permanent magnet units are slit longitudinally into, realize parallel magnetization；It is detachably connected between the permanent magnet unit of arbitrary neighborhood.With it is existing
The permanent magnet of integral type cirque structure in technology is compared, and the application includes at least a pair of of permanent magnet, and permanent magnet is by radial direction
Cut into multiple permanent magnet units, therefore the outer surface of each permanent magnet unit will produce the vortex of small area, therefore by one big
Vortex becomes multiple small vortexs, can effectively reduce the eddy-current loss that space-harmonic component generates in the rotor, therefore slow
The excessive problem of eddy-current loss has been solved, motor efficiency and stability are improved.
Motor provided by the utility model, including engine base, be used cooperatively positioned at the stator of base inner and with stator it is upper
The rotor assembly stated.Due to the setting of rotor assembly, so motor has the advantages that all of above-mentioned rotor assembly, it can be effective
The eddy-current loss that space-harmonic component generates in the rotor is reduced, therefore alleviates the excessive problem of eddy-current loss, is improved electronic
Engine efficiency and stability.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific implementation mode or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram for the rotor assembly that the utility model embodiment provides；
Fig. 2 is the vertical view of the permanent magnet for the rotor assembly that the utility model embodiment provides；
Fig. 3 is the side view of the permanent magnet for the rotor assembly that the utility model embodiment provides；
Fig. 4 is the vertical view of another permanent magnet for the rotor assembly that the utility model embodiment provides.
Icon：
100- shafts；200- permanent magnets；201- permanent magnet units.
Specific implementation mode
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality
Novel protected range.
It is in the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
The utility model and simplifying describes for ease of description, do not indicate or imply the indicated device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second " is used for description purposes only, and is not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition
The concrete meaning of language in the present invention.
The utility model is further described in detail below through specific implementation examples and in conjunction with the accompanying drawings.
Rotor assembly provided by the utility model, including shaft, at least a pair of of permanent magnet on the outside of the shaft；Institute
It states permanent magnet and is slit longitudinally into multiple permanent magnet units, realize parallel magnetization；It is fixed between the permanent magnet unit of arbitrary neighborhood
Connection.Since eddy-current loss is generated in permanent magnet outer ring, permanent magnet in the prior art is integral type cirque structure, forever
The outer surface of magnet will produce the vortex of large area, therefore eddy-current loss is very serious.The application includes at least a pair of of permanent magnet,
And permanent magnet is slit longitudinally into multiple permanent magnet units, therefore the outer surface of each permanent magnet unit will produce the vortex of small area,
Therefore multiple small vortexs are become by a big vortex, the whirlpool that space-harmonic component generates in the rotor can be effectively reduced
Stream loss, therefore the excessive problem of eddy-current loss is alleviated, improve motor efficiency and stability.
Embodiment one
Fig. 1 is the structural schematic diagram for the rotor assembly that the utility model embodiment provides；Fig. 2 is the utility model embodiment
The vertical view of the permanent magnet of the rotor assembly of offer；Fig. 3 is the permanent magnet for the rotor assembly that the utility model embodiment provides
Side view.
As shown in Figs. 1-3, rotor assembly provided in this embodiment, including：Shaft 100, positioned at the outside of shaft 100 at least
A pair of of permanent magnet 200；Permanent magnet 200 is slit longitudinally into multiple permanent magnet units 201, realizes parallel magnetization；Arbitrary neighborhood is forever
It is fixedly connected between magnetic cell 201.Permanent magnet 200 is slit longitudinally into multiple permanent magnet units 201, therefore each permanent magnet unit
201 outer surface will produce the vortex of small area, therefore become multiple small vortexs by a big vortex, can effectively drop
The eddy-current loss that low spatial harmonic component generates in the rotor, therefore alleviate the excessive problem of eddy-current loss.
Specifically, bonded by adhesive layer between permanent magnet 200, it can be tightly fixed by two adjacent permanent magnets 200.
Further, it is bonded by adhesive layer between permanent magnet unit 201, it can be by two adjacent permanent magnets 200 tightly
It is fixed.
It should be noted that the quantity of permanent magnet unit 201 is set as 4,6,8,10 ... etc., according to permanent magnetism list
The quantity of member 201 determines the series of motor；When the quantity of permanent magnet unit 201 is set as 6, as 6 grades of motors.
It also needs to, permanent magnet 200 forms multiple permanent magnet units 201 (after i.e. permanent magnet 200 is divided after being divided
Form multiple small permanent magnets).
In the present embodiment alternative, permanent magnet unit 201 is set as multipair, multipair permanent magnet unit 201 in the horizontal direction on
It is of same size；Multipair permanent magnet unit 201 can reduce space-harmonic component, and then reduce eddy-current loss.
Specifically, as shown in Fig. 2, form tangent line between two permanent magnet units 201 of arbitrary neighborhood, the direction of tangent line with forever
The direction that magnetic cell 201 generates magnetic field is parallel；Eddy-current loss can be reduced.
In the present embodiment alternative, rotor assembly further includes balance ring, and balance ring is set in 100 outside of shaft.
Specifically, offering cavity in balance ring, shaft 100 is set in the inside cavity of balance ring.
In conjunction with can be seen that rotor assembly provided in this embodiment to the detailed description of the utility model above, including turn
Axis 100, at least a pair of of permanent magnet 200 positioned at 100 outside of shaft；Permanent magnet 200 is slit longitudinally into multiple permanent magnet units
201, realize parallel magnetization；It is fixedly connected between the permanent magnet unit 201 of arbitrary neighborhood.Since eddy-current loss is in permanent magnet 200
What outer ring generated, permanent magnet 200 in the prior art is integral type cirque structure, and the outer surface of permanent magnet 200 will produce greatly
The vortex of area, therefore eddy-current loss is very serious.The application includes at least a pair of of permanent magnet 200, and permanent magnet 200 is by radial direction
Multiple permanent magnet units 201 are cut into, therefore the outer surface of each permanent magnet unit 201 will produce the vortex of small area, therefore by one
A big vortex becomes multiple small vortexs, can effectively reduce the eddy-current loss that space-harmonic component generates in the rotor,
Therefore the excessive problem of eddy-current loss is alleviated, motor efficiency and stability are improved.
Embodiment two
Fig. 4 is the vertical view of another permanent magnet 200 for the rotor assembly that the utility model embodiment provides.
As shown in figure 4, rotor assembly provided in this embodiment, including：Shaft 100, at least one positioned at 100 outside of shaft
To permanent magnet 200；Permanent magnet 200 is slit longitudinally into multiple permanent magnet units 201, realizes parallel magnetization；The permanent magnetism of arbitrary neighborhood
It is fixedly connected between unit 201.Permanent magnet 200 is slit longitudinally into multiple permanent magnet units 201, therefore each permanent magnet unit 201
Outer surface will produce the vortex of small area, therefore multiple small vortexs are become by a big vortex, can effectively reduced
The eddy-current loss that space-harmonic component generates in the rotor, therefore alleviate the excessive problem of eddy-current loss.
Specifically, permanent magnet unit 201 is set as multipair, multipair permanent magnet unit 201 forms ring along the axis direction of shaft 100
Shape structure；Multipair permanent magnet unit 201 can reduce space-harmonic component, and then reduce eddy-current loss.
Other structures of the present embodiment are identical as the structure of embodiment one, therefore which is not described herein again.
In conjunction with can be seen that rotor assembly provided in this embodiment to the detailed description of the utility model above, including turn
Axis 100, at least a pair of of permanent magnet 200 positioned at 100 outside of shaft；Permanent magnet 200 is slit longitudinally into multiple permanent magnet units
201, realize parallel magnetization；It is fixedly connected between the permanent magnet unit 201 of arbitrary neighborhood.Since eddy-current loss is in permanent magnet 200
What outer ring generated, permanent magnet 200 in the prior art is integral type cirque structure, and the outer surface of permanent magnet 200 will produce greatly
The vortex of area, therefore eddy-current loss is very serious.The application includes at least a pair of of permanent magnet 200, and permanent magnet 200 is by radial direction
Multiple permanent magnet units 201 are cut into, therefore the outer surface of each permanent magnet unit 201 will produce the vortex of small area, therefore by one
A big vortex becomes multiple small vortexs, can effectively reduce the eddy-current loss that space-harmonic component generates in the rotor,
Therefore the excessive problem of eddy-current loss is alleviated, motor efficiency and stability are improved.
Embodiment three
Rotor assembly provided in this embodiment, including shaft 100, at least a pair of of permanent magnet positioned at 100 outside of shaft
200；Permanent magnet 200 is slit longitudinally into multiple permanent magnet units 201, realizes parallel magnetization；The permanent magnet unit 201 of arbitrary neighborhood it
Between be detachably connected.Permanent magnet 200 is slit longitudinally into multiple permanent magnet units 201, therefore the outer surface of each permanent magnet unit 201
The vortex of small area is will produce, therefore multiple small vortexs are become by a big vortex, space harmonics can be effectively reduced
The eddy-current loss that component generates in the rotor, therefore alleviate the excessive problem of eddy-current loss.
Specifically, permanent magnet unit 201 is set as multipair, multipair permanent magnet unit 201 in the horizontal direction on it is of same size；It is more
Space-harmonic component can be reduced to permanent magnet unit 201, and then reduce eddy-current loss.
Other structures of the present embodiment are identical as the structure of embodiment one and embodiment two, therefore which is not described herein again.
In conjunction with can be seen that rotor assembly provided in this embodiment to the detailed description of the utility model above, including turn
Axis 100, at least a pair of of permanent magnet 200 positioned at 100 outside of shaft；Permanent magnet 200 is slit longitudinally into multiple permanent magnet units
201, realize parallel magnetization；It is detachably connected between the permanent magnet unit 201 of arbitrary neighborhood.With integral type annulus in the prior art
The permanent magnet 200 of shape structure is compared, and the application includes at least a pair of of permanent magnet 200, and permanent magnet 200 be slit longitudinally into it is multiple
Permanent magnet unit 201, therefore the outer surface of each permanent magnet unit 201 will produce the vortex of small area, therefore by a big vortex
Become multiple small vortexs, the eddy-current loss that space-harmonic component generates in the rotor can be effectively reduced, therefore alleviate
The excessive problem of eddy-current loss improves motor efficiency and stability.
Example IV
Motor provided in this embodiment, including：Engine base, be used cooperatively positioned at the stator of base inner and with stator it is above-mentioned
Rotor assembly.
Motor provided in this embodiment, including engine base, be used cooperatively positioned at the stator of base inner and with stator it is above-mentioned
Rotor assembly.Due to the setting of rotor assembly, so motor has the advantages that all of above-mentioned rotor assembly, can effectively drop
The eddy-current loss that low spatial harmonic component generates in the rotor, therefore the excessive problem of eddy-current loss is alleviated, improve motor
Efficiency and stability.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it
System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should
Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included certain features rather than other feature, but the combination of the feature of different embodiments means in this practicality newly
Within the scope of type and form different embodiments.For example, in claims above, embodiment claimed
One of arbitrary mode can use in any combination.The information for being disclosed in the background technology part is merely intended to deepen
Understanding to the general background technology of the utility model, and be not construed as recognizing or implying in any form that the information is constituted
The prior art known to those skilled in the art.
Claims (10)
1. a kind of rotor assembly, which is characterized in that including：Shaft, at least a pair of of permanent magnet on the outside of the shaft；
The permanent magnet uses parallel magnetization；
The permanent magnet is cut into multiple permanent magnet units, and cut direction is identical as magnetizing direction；
It is fixedly connected between the permanent magnet unit of arbitrary neighborhood.
2. rotor assembly according to claim 1, which is characterized in that pass through bonding between the permanent magnet unit cut
Layer bonds.
3. rotor assembly according to claim 1, which is characterized in that bonded by adhesive layer between the permanent magnet.
4. according to claim 1-3 any one of them rotor assembly, which is characterized in that the permanent magnet unit is set as multipair,
The multipair permanent magnet unit in the horizontal direction on it is of same size.
5. rotor assembly according to claim 4, which is characterized in that shape between two permanent magnet units of arbitrary neighborhood
Tangentially, the direction of the tangent line are parallel with the permanent magnet unit generation direction in magnetic field.
6. according to claim 1-3 any one of them rotor assembly, which is characterized in that the permanent magnet unit is set as multipair,
The multipair permanent magnet unit forms cyclic structure along the axis direction of the shaft.
7. rotor assembly according to claim 1, which is characterized in that further include balance ring, the balance ring is set in institute
It states on the outside of shaft.
8. a kind of rotor assembly, which is characterized in that including：Shaft, at least a pair of of permanent magnet on the outside of the shaft；
The permanent magnet is slit longitudinally into multiple permanent magnet units, realizes parallel magnetization；
It is detachably connected between the permanent magnet unit of arbitrary neighborhood.
9. rotor assembly according to claim 8, which is characterized in that the permanent magnet unit is set as multipair, multipair described
Permanent magnet unit in the horizontal direction on it is of same size.
10. a kind of motor, which is characterized in that including：Engine base makes positioned at the stator of the base inner and with stator cooperation
Any one of claim 1-6 or 7-8 any one of them rotor assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820130130.0U CN207782528U (en) | 2018-01-25 | 2018-01-25 | Rotor assembly and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820130130.0U CN207782528U (en) | 2018-01-25 | 2018-01-25 | Rotor assembly and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207782528U true CN207782528U (en) | 2018-08-28 |
Family
ID=63211611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820130130.0U Active CN207782528U (en) | 2018-01-25 | 2018-01-25 | Rotor assembly and motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN207782528U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108039786A (en) * | 2018-01-25 | 2018-05-15 | 博远机电（嘉兴）有限公司 | Rotor assembly and motor |
| CN111524681A (en) * | 2020-03-29 | 2020-08-11 | 至玥腾风科技集团有限公司 | Magnetizing method of permanent magnet and manufacturing method of high-speed rotor |
| CN112636494A (en) * | 2020-12-21 | 2021-04-09 | 中国人民解放军军事科学院国防工程研究院 | Flywheel motor for energy storage flywheel and electromagnetic simulation analysis method thereof |
-
2018
- 2018-01-25 CN CN201820130130.0U patent/CN207782528U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108039786A (en) * | 2018-01-25 | 2018-05-15 | 博远机电（嘉兴）有限公司 | Rotor assembly and motor |
| CN111524681A (en) * | 2020-03-29 | 2020-08-11 | 至玥腾风科技集团有限公司 | Magnetizing method of permanent magnet and manufacturing method of high-speed rotor |
| CN111524681B (en) * | 2020-03-29 | 2021-07-27 | 靳普 | Magnetizing method of permanent magnet and manufacturing method of high-speed rotor |
| CN112636494A (en) * | 2020-12-21 | 2021-04-09 | 中国人民解放军军事科学院国防工程研究院 | Flywheel motor for energy storage flywheel and electromagnetic simulation analysis method thereof |
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Effective date of registration: 20220704 Address after: 226000 No. 885, Qingdao Road, Nantong high tech Industrial Development Zone, Nantong City, Jiangsu Province Patentee after: Bogu Technology (Nantong) Co.,Ltd. Address before: 314000 room 917, block B, smart building, Jiaxing smart Industrial Innovation Park, building 19, No. 36, Changsheng Road, Nanhu District, Jiaxing City, Zhejiang Province Patentee before: BOYUAN ELECTROMECHANICAL (JIAXING) CO.,LTD. |
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