CN111835161B - Spiral winding preparation method for composite rotor of high-speed permanent magnet synchronous motor - Google Patents
Spiral winding preparation method for composite rotor of high-speed permanent magnet synchronous motor Download PDFInfo
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- CN111835161B CN111835161B CN202010971138.1A CN202010971138A CN111835161B CN 111835161 B CN111835161 B CN 111835161B CN 202010971138 A CN202010971138 A CN 202010971138A CN 111835161 B CN111835161 B CN 111835161B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
- H01F41/094—Tensioning or braking devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
- H01F41/098—Mandrels; Formers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention belongs to the field of motor rotor manufacturing, and particularly relates to a high-speed permanent magnet synchronous motor composite rotor spiral winding preparation method, which comprises the following steps: preparing a composite magnetic material; adhering the inner surface of the permanent magnet to the surface of a rotating shaft of the motor; two ends of the permanent magnet are connected with and provided with a circular truncated cone metal supporting piece; continuously and spirally winding a plurality of layers of prepared composite magnetic materials on the outer surface of the carbon fiber of the permanent magnet along the circumferential direction, and applying pretightening force in the winding process; after the composite magnetic material is wound, the composite magnetic material is continuously wound on the surface to form a carbon fiber protective sleeve, and then the carbon fiber protective sleeve is sequentially cured, cleaned, removed from the circular truncated cone metal support and turned to obtain the composite rotor. In the spiral winding process, the invention can ensure that each layer of magnetic powder adhesive film is uniformly distributed, particularly can solve the problem of interlayer continuous winding, and fundamentally solves the time-consuming problem of winding wrinkles at the end part of the rotating shaft or cutting and rewinding caused by continuous winding.
Description
Technical Field
The invention belongs to the field of motor rotor manufacturing, and particularly relates to a spiral winding preparation method of a composite rotor of a high-speed permanent magnet synchronous motor.
Background
The composite rotor spiral winding technology of the high-speed permanent magnet synchronous motor is an important step for forming the high-speed permanent magnet synchronous motor rotor.
Chinese application 201920489298.5 discloses a reinforced HDPE-PTFE composite winding pipe, wherein the winding is a spiral overlapping winding, which is mainly for some tapes suitable for overlapping winding, and for some magnetic materials such as composite magnetic materials not suitable for overlapping winding, the method can cause unevenness of the magnetic materials. In addition, the method only solves the problem of single-layer continuous winding and does not solve the problem of multi-layer winding. The chinese application 201280029583.X proposes a magnetically loaded composite rotor and a method for preparing a magnetically loaded prepreg tape, which provides a basis for the research and preparation of a composite rotor magnetic powder carbon fiber composite material for a high-speed motor, but does not describe a composite rotor winding method in detail. In addition, the current single-layer continuous winding process of the composite rotor has the problem of a step from the end of winding of the previous layer to the start of winding of the next layer, which can cause uneven distribution of magnetic powder in the circumferential direction, thereby influencing the magnetic performance of the motor.
Disclosure of Invention
In order to solve the problems of eddy current loss and high-speed motor rotor stress concentration caused by harmonic waves of a high-speed permanent magnet synchronous motor rotor, the invention designs a composite magnetic material formed by a magnetic powder adhesive film and carbon fiber prepreg, and provides a spiral winding preparation method of the high-speed permanent magnet synchronous motor composite rotor in order to solve the defects of the winding technology and consider the special multilayer structure of the high-speed permanent magnet synchronous motor. The method can ensure that each layer of magnetic powder adhesive film is uniformly distributed in the spiral winding process, particularly can solve the problem of interlayer continuous winding, and fundamentally solves the time-consuming problem of winding wrinkles at the end part of the rotating shaft or cutting and rewinding caused by continuous winding.
In order to achieve the aim, the invention provides a high-speed permanent magnet synchronous motor composite rotor spiral winding preparation method, which comprises the following steps:
the method comprises the following steps: preparing a composite magnetic material, wherein the composite magnetic material comprises strip-shaped carbon fiber prepreg and a magnetic powder adhesive film paved on the surface of the carbon fiber prepreg;
step two: adhering the inner surface of a cylindrical permanent magnet to the surface of a motor rotating shaft, winding a layer of carbon fiber on the outer surface of the cylindrical permanent magnet and applying pretightening force;
step three: the two ends of the cylindrical permanent magnet are connected and provided with annular supporting pieces, and the outer diameter of one end of each annular supporting piece, which is connected with the cylindrical permanent magnet, is equal to that of the cylindrical permanent magnet;
step four: spirally winding a plurality of layers of the composite magnetic materials prepared in the first step on the outer surface of the carbon fiber of the cylindrical permanent magnet, applying pretightening force in the winding process, and enabling the composite magnetic materials on adjacent layers to be in a cross shape;
step five: and after the composite magnetic material is wound, continuously winding the surface of the composite magnetic material to form a carbon fiber protective sleeve, and then sequentially carrying out curing, cleaning, annular support piece dismounting and turning processing to prepare the composite rotor.
Preferably, in the third step, the annular supporting member is in a circular truncated cone shape, and an inclined surface of the annular supporting member is in an arc shape.
Preferably, in the fourth step, the winding start end and the winding end of each layer of the composite magnetic material are respectively located on the annular supporting pieces at two ends of the cylindrical permanent magnet.
Preferably, the relationship between the width of the composite magnetic material and the winding angle is:θ=arccos(nC/L)，θin order to have a spiral winding angle,Cis the circumferential length of the cylindrical permanent magnet,Lis the axial length of the cylindrical permanent magnet,nis the ratio of the axial length of the cylindrical permanent magnet to the width of the composite magnetic material.
Preferably, in the fourth step, in the process of spirally winding the composite magnetic material, the pretightening force of each layer in the whole winding process is kept consistent, and the pretightening force is reduced layer by layer as the number of winding layers is increased.
Preferably, in step four, in the process of spirally winding the composite magnetic material, the winding angle is gradually increased at a rate of 0.3 ° per 5 layers as the number of winding layers is increased.
Preferably, the specific process for preparing the composite magnetic material in the step one is as follows: mixing carbon fibers with epoxy resin to prepare a carbon fiber prepreg; mixing magnetic powder with an epoxy resin binder and other additives to prepare a magnetic powder adhesive film, and then heating the magnetic powder adhesive film to enable the magnetic powder adhesive film to be in a molten state, wherein the other additives comprise a coupling agent, a curing agent and a plasticizer; and spreading the prepared carbon fiber prepreg flatly to form strip-shaped carbon fiber prepreg, uniformly spreading a magnetic powder adhesive film in a molten state on the surface of the strip-shaped carbon fiber prepreg, and then carrying out curing treatment to prepare the composite magnetic material.
Preferably, the cylindrical permanent magnet is formed of a plurality of tile-shaped sintered permanent magnets.
Preferably, in the fourth step, the inter-layer densification of the composite magnetic material is performed by using a doctor blade in the process of spirally winding the composite magnetic material.
Preferably, in the fifth step, the rotating shaft of the motor is kept in a low-speed rotating state after the composite magnetic material is wound and before the curing treatment is performed.
The invention has the beneficial effects that:
1) the pre-tightening force is added in the winding process, and the magnetic powder adhesive film and carbon fiber prepreg mixed material can be effectively (tightly and at a low porosity) wound on a motor rotating shaft, so that the eddy current loss and the stress concentration of a high-speed motor rotor are effectively reduced; the pretightening force is gradually reduced along with the increase of the number of winding layers, and the allowance gap is also gradually reduced, so that the uniform distribution of the magnetic powder adhesive films in each layer of winding along the circumferential direction is ensured;
2) the winding directions of adjacent layers are opposite and crossed, so that the next layer can completely cover the allowance gap existing in the previous layer, thereby increasing the winding tightness of the composite magnetic material, reducing the void ratio and improving the magnetic performance of the composite rotor;
3) in the stage from the end of winding of the first layer to the start of winding of the second layer in the single-layer winding, the magnetic powder carbon fiber composite material needs to be subjected to step rise, and the step rise problem exists in each layer of winding;
4) the circular truncated cone metal supporting piece can effectively solve the problem of continuity of conversion from a previous layer to a next layer, so that the process time is effectively shortened;
5) compared with single-layer continuous winding, the starting end and the ending end of the spiral winding are both arranged on the metal support, so that the problem of nonuniform magnetic density distribution in the circumferential direction can be solved.
Drawings
FIG. 1 is a flow chart of a method for manufacturing a composite rotor of a high-speed permanent magnet synchronous motor by spiral winding according to an embodiment of the invention;
FIG. 2 is a diagram of a spiral winding process according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of a composite rotor of a high-speed permanent magnet synchronous motor prepared according to an embodiment of the invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings and examples, it being understood that the examples described below are intended to facilitate the understanding of the invention, and are not intended to limit it in any way.
As shown in fig. 1 and 2, the method for manufacturing the composite rotor of the high-speed permanent magnet synchronous motor by spiral winding includes the following steps:
the method comprises the following steps: preparing a composite magnetic material 1;
1) mixing carbon fibers with epoxy resin to prepare a carbon fiber prepreg;
2) mixing magnetic powder with a series of additives such as an epoxy resin binder, a coupling agent, a curing agent, a plasticizer and the like to prepare a magnetic powder adhesive film, and then heating the magnetic powder adhesive film at 80 ℃ to enable the magnetic powder adhesive film to be in a molten state;
3) in the preparation equipment of the composite material, the prepared carbon fiber prepreg is spread and unfolded to form a strip-shaped carbon fiber prepreg with the thickness of 0.1mm, a magnetic powder adhesive film in a molten state is uniformly spread on the surface of the strip-shaped carbon fiber prepreg, and then room temperature curing treatment is carried out to enable the magnetic powder adhesive film to be in a molten state, so that the composite magnetic material 1 is prepared. The spreading thickness of the magnetic powder adhesive film is 0.3 mm.
Advantageously, the carbon fiber prepreg of the embodiment adopts the carbon fiber prepreg with the thickness of 0.1mm, and the magnetic performance of the composite magnetic material 1 and the magnetic powder filling maximization in the magnetic powder adhesive film can be ensured.
Step two: a sintered permanent magnet 3 is adhered to the surface of the motor rotating shaft 2;
1) cleaning the surface of the motor rotating shaft 2;
2) the inner surface of a cylindrical permanent magnet 3 formed by four tile-shaped sintered permanent magnets is uniformly coated with a bonding agent, is adhered to a rotating shaft 2 of a high-speed motor, and is kept for 10min by applying radial pressure. In the present embodiment, the axial length of the cylindrical permanent magnet 3 is 260mm (i.e., the axial length of the rotor is 260 mm), the inner radius is 41mm, and the outer radius is 46 mm;
3) a layer of thin carbon fiber is wound on the outer surface of the cylindrical permanent magnet 3 and is pre-tightened, so that the permanent magnet can be kept in a compressive stress state all the time, and a flat plane can be provided for the subsequent winding of the composite magnetic material 1.
Step three: two circular truncated cone annular metal supporting pieces 4 are respectively connected and installed at two ends of the cylindrical permanent magnet 3;
as shown in fig. 2, the larger outer radius end of the circular truncated cone metal support 4 is connected with the permanent magnet 3 and is installed with the same outer radius as the permanent magnet 3, the inner radius thereof is the same as the inner radius of the permanent magnet 3, and the axial length thereof is about 60 mm. Preferably, the inclined surface of the circular truncated cone metal support 4 is circular arc-shaped.
Step four: spirally winding a plurality of layers of prepared composite magnetic materials 1 on the outer surface of the carbon fiber on the permanent magnet 4 along the circumferential direction;
as shown in fig. 2, the winding start end and the winding end of each layer of the composite magnetic material 1 are respectively arranged on the circular arc inclined planes of the circular truncated cone metal supporting pieces 4 at the two ends of the permanent magnet 3, after the winding end is reached, the winding direction is changed, the winding of the next layer of the composite magnetic material 1 is continued, the composite magnetic materials 1 on the adjacent layers are crossed, and the winding speed is controlled to be 0.1-1 m/s. In order to ensure that the composite magnetic material 1 is tightly wound and solve the loosening effect, pretightening force for ensuring the interference magnitude required by the highest rotating speed of the high-speed motor is added in the spiral winding process, the pretightening force of each layer in the whole winding process is kept consistent, and the pretightening force is reduced layer by layer along with the increase of the number of winding layers until the spiral winding is finished. Advantageously, in the spiral winding process, the composite magnetic material 1 is extruded by the scraper, so that the tightness of the magnetic powder adhesive film in the winding process is ensured.
In particular, the relationship between the width of the composite magnetic material 1 and the spiral winding angle is:θ=arccos(nC/L)，θin order to have a spiral winding angle,Cis the circumferential length of the cylindrical permanent magnet,Lis the axial length of the cylindrical permanent magnet,nis the ratio of the axial length of the cylindrical permanent magnet to the width of the composite magnetic material. Preferably, the width of the composite magnetic material 1 is one seventh of the axial length of the permanent magnet 3, and the spiral winding angle is 82.6 °. Preferably, the width of the composite magnetic material 1 is one tenth of the axial length of the permanent magnet 3, and the spiral winding angle is 84.8 °. In the present embodiment, the width of the composite magnetic material 1 is made one fifth of the axial length of the permanent magnet 3, and the spiral winding angle is 79.6 °. Particularly, in order to solve the problem of radial migration of the magnetic powder adhesive film in the winding process, a spiral winding angle smaller than the calculated value is actually selected, so that the spiral winding angle in the embodiment is 79 degrees, and the width of the composite magnetic material is 52 mm.
In addition, during the spiral winding process, the spiral winding angle should be slightly increased with decreasing preload and increasing radius of the rotation shaft, and preferably, the winding angle is gradually increased at a rate of 0.3 ° per 5 layers.
Particularly, the winding start end and the winding end are respectively arranged on the circular arc inclined planes of the circular truncated cone metal supporting pieces 4 at the two ends of the permanent magnet 3, so that on one hand, the spiral winding can be finished at the previous layer, and the winding start of the next layer is discontinuous; on the other hand, the magnetic powder adhesive film in a molten state can be prevented from extending along the axial direction under the pressure of pretightening force, so that the magnetic powder adhesive film on the end face of the motor rotor is not uniform.
Step five: after the composite magnetic material 1 is spirally wound, continuously winding the composite magnetic material 1 along the circumferential direction to form a carbon fiber protective sleeve, and obtaining a prefabricated rotor; then placing the obtained prefabricated rotor into a curing furnace, and carrying out rotary heating curing treatment to ensure that the magnetic powder adhesive film is uniformly distributed along the circumferential direction; after the curing treatment is finished, cleaning the surface of the prefabricated rotor; cutting along the interface of the circular truncated cone metal support 4 and the prefabricated rotor by using a turning tool, detaching the support 4 on two sides, simultaneously removing redundant magnetic powder adhesive film and carbon fiber prepreg mixed material, turning along the circumferential direction of the rotor, turning into a cylinder, finally coating a layer of thin antioxidant on the upper surface and the lower surface of the turned composite rotor, finishing drying, and finishing the preparation of the high-speed permanent magnet synchronous motor composite rotor, wherein the cross-sectional view of the prepared composite rotor is shown in fig. 3.
In particular, the motor shaft 2 should be kept in a low-speed rotation state after the winding of the composite magnetic material 1 is completed and before the curing process, so that the magnetic powder adhesive film is prevented from being unevenly distributed due to gravity in a static state.
It will be apparent to those skilled in the art that various modifications and improvements can be made to the embodiments of the present invention without departing from the inventive concept thereof, and these modifications and improvements are intended to be within the scope of the invention.
Claims (6)
1. A high-speed permanent magnet synchronous motor composite rotor spiral winding preparation method is characterized by comprising the following steps:
the method comprises the following steps: preparing a composite magnetic material, wherein the composite magnetic material comprises strip-shaped carbon fiber prepreg and a magnetic powder adhesive film paved on the surface of the carbon fiber prepreg;
step two: adhering the inner surface of a cylindrical permanent magnet to the surface of a motor rotating shaft, winding a layer of carbon fiber on the outer surface of the cylindrical permanent magnet and applying pretightening force;
step three: the two ends of the cylindrical permanent magnet are connected and provided with annular supporting pieces, and the outer diameter of one end of each annular supporting piece, which is connected with the cylindrical permanent magnet, is equal to that of the cylindrical permanent magnet; the annular supporting piece is in a circular truncated cone shape, and the inclined plane of the annular supporting piece is in an arc shape;
step four: spirally winding a plurality of layers of the composite magnetic materials prepared in the first step on the outer surface of the carbon fiber of the cylindrical permanent magnet, applying pretightening force in the winding process, and enabling the composite magnetic materials on adjacent layers to be in a cross shape; the winding starting end and the winding ending end of each layer of the composite magnetic material are respectively positioned on the annular supporting pieces at the two ends of the cylindrical permanent magnet(ii) a The relationship between the width of the composite magnetic material and the winding angle is as follows:θ=arccos(nC/L)，θin order to have a spiral winding angle,Cis the circumferential length of the cylindrical permanent magnet,Lis the axial length of the cylindrical permanent magnet,nthe ratio of the axial length of the cylindrical permanent magnet to the width of the composite magnetic material is obtained; in the process of spirally winding the composite magnetic material, the pretightening force of each layer in the whole winding process is kept consistent, and the pretightening force is reduced layer by layer along with the increase of the number of winding layers;
step five: and after the composite magnetic material is wound, continuously winding the surface of the composite magnetic material to form a carbon fiber protective sleeve, and then sequentially carrying out curing, cleaning, annular support piece dismounting and turning processing to prepare the composite rotor.
2. The method as claimed in claim 1, wherein in the fourth step, the winding angle is gradually increased at a rate of 0.3 ° per 5 layers as the number of winding layers is increased in the process of spirally winding the composite magnetic material.
3. The method according to claim 1, wherein the step one of preparing the composite magnetic material comprises the following specific steps: mixing carbon fibers with epoxy resin to prepare a carbon fiber prepreg; mixing magnetic powder with an epoxy resin binder and other additives to prepare a magnetic powder adhesive film, and then heating the magnetic powder adhesive film to enable the magnetic powder adhesive film to be in a molten state, wherein the other additives comprise a coupling agent, a curing agent and a plasticizer; and spreading the prepared carbon fiber prepreg flatly to form strip-shaped carbon fiber prepreg, uniformly spreading a magnetic powder adhesive film in a molten state on the surface of the strip-shaped carbon fiber prepreg, and then carrying out curing treatment to prepare the composite magnetic material.
4. The method of claim 1, wherein the cylindrical permanent magnet is formed of a plurality of tile-shaped sintered permanent magnets.
5. The method according to claim 1, wherein in step four, the interlayer of the composite magnetic material is densified by a doctor blade during the spiral winding of the composite magnetic material.
6. The method of claim 1, wherein in step five, the rotating shaft of the motor is kept rotating at a low speed after the winding of the composite magnetic material is completed and before the curing process is performed.
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| CN202010971138.1A CN111835161B (en) | 2020-09-16 | 2020-09-16 | Spiral winding preparation method for composite rotor of high-speed permanent magnet synchronous motor |
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| CN202010971138.1A CN111835161B (en) | 2020-09-16 | 2020-09-16 | Spiral winding preparation method for composite rotor of high-speed permanent magnet synchronous motor |
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| CN111835161B true CN111835161B (en) | 2020-12-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113285541B (en) * | 2021-07-19 | 2021-10-15 | 北京航空航天大学 | Motor rotor using magnetic material with magnetic load hierarchical structure and preparation method |
| CN113555205B (en) * | 2021-07-19 | 2022-04-01 | 北京航空航天大学 | Magnetic material preparation device with magnetic load hierarchical structure and application method thereof |
| CN113285540B (en) * | 2021-07-19 | 2021-11-02 | 北京航空航天大学 | Novel high-speed motor multilayer variable magnetic load composite rotor structure and manufacturing method |
| DE102022112183A1 (en) | 2022-05-16 | 2023-11-16 | Bayerische Motoren Werke Aktiengesellschaft | Method for producing a rotor bandage for a rotor and rotor |
| CN116154997A (en) * | 2023-03-24 | 2023-05-23 | 浙江极氪智能科技有限公司 | Motor rotor structure, motor and winding method of wire harness net |
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| WO1982004505A1 (en) * | 1981-06-10 | 1982-12-23 | Corbach Rainer | Rotor for permanent magnet electric machine |
| CN103608157A (en) * | 2011-06-16 | 2014-02-26 | 威廉斯混合动力有限公司 | Magnetically loaded composite rotors and method of making a magnetically loaded pre-impregnated tape |
| CN106100176A (en) * | 2015-04-27 | 2016-11-09 | 西门子公司 | The rotor of motor, for manufacturing the method for the rotor of motor and corresponding motor |
| CN110504805A (en) * | 2019-08-28 | 2019-11-26 | 中国北方车辆研究所 | A kind of permanent magnet surface-mount type high speed rotor of motor permanent magnet fixing means |
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2020
- 2020-09-16 CN CN202010971138.1A patent/CN111835161B/en active Active
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|---|---|---|---|---|
| WO1982004505A1 (en) * | 1981-06-10 | 1982-12-23 | Corbach Rainer | Rotor for permanent magnet electric machine |
| CN103608157A (en) * | 2011-06-16 | 2014-02-26 | 威廉斯混合动力有限公司 | Magnetically loaded composite rotors and method of making a magnetically loaded pre-impregnated tape |
| CN106100176A (en) * | 2015-04-27 | 2016-11-09 | 西门子公司 | The rotor of motor, for manufacturing the method for the rotor of motor and corresponding motor |
| CN110504805A (en) * | 2019-08-28 | 2019-11-26 | 中国北方车辆研究所 | A kind of permanent magnet surface-mount type high speed rotor of motor permanent magnet fixing means |
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