CN114938090A - Axial flux motor rotor with built-in magnetic poles and motor - Google Patents
Axial flux motor rotor with built-in magnetic poles and motor Download PDFInfo
- Publication number
- CN114938090A CN114938090A CN202210676546.3A CN202210676546A CN114938090A CN 114938090 A CN114938090 A CN 114938090A CN 202210676546 A CN202210676546 A CN 202210676546A CN 114938090 A CN114938090 A CN 114938090A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- rotor
- rotor core
- built
- axial
- 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
Links
Images
Classifications
-
- 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
- H02K1/2793—Rotors axially facing stators
- H02K1/2795—Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2798—Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets where both axial sides of the stator face a rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/02—Machines with one stator and two or more rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/12—Transversal flux machines
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention relates to the technical field of motors, and particularly discloses an axial flux motor rotor with built-in magnetic poles and a motor. According to the axial flux motor rotor with the built-in magnetic poles, the rotor iron core is alternately provided with the first permanent magnet grooves and the second permanent magnet grooves at intervals, the first permanent magnets are arranged in the first permanent magnet grooves, the second permanent magnets are arranged in the second permanent magnet grooves, the magnetization direction of the first permanent magnets is the same as the axial direction of the rotor iron core, the magnetization direction of the second permanent magnets is perpendicular to the axial direction of the rotor iron core, the first permanent magnets generate magnetic depressions, the second permanent magnets generate magnetic bulges, and the reluctance torque is the difference value generated by the magnetic fluxes of the first permanent magnets and the second permanent magnets, so that the salient pole ratio is formed; in addition, a layer of permanent magnet is arranged on the rotor core, so that the axial size of the motor rotor is effectively reduced.
Description
Technical Field
The invention relates to the technical field of motors, in particular to an axial flux motor rotor with built-in magnetic poles and a motor.
Background
With the rapid development of new energy automobile technology, the performance requirement on the driving motor for the automobile is higher and higher, and the increase of the performance inevitably leads to the increase of the volume of the driving motor, but the axial space size of the new energy automobile is very limited, so that the contradiction between the performance and the volume of the driving motor is increasingly prominent. Compared with the traditional radial magnetic field motor, the axial magnetic flux motor has the advantages of short axial size, large torque density, light weight and high efficiency due to the adoption of the axial magnetic field design, and better meets the requirement of the axial space size of a new energy automobile.
Axial-flux electric machine rotors are generally of two types: magnetic pole surface-mounted type and magnetic pole built-in type. The existing axial flux motor rotor mostly adopts a magnetic pole surface-mounted type, the alternating-axis magnetic resistance and the direct-axis magnetic resistance are approximately equal, the weak magnetic speed regulation capability is poor, large demagnetization current needs to be borne during high-speed operation, the magnetic pole demagnetization risk is great, and the power factor and the efficiency are low. The axial flux motor rotor with built-in magnetic poles has different alternating and direct axis magnetic resistance and strong weak magnetic speed regulation capability.
At present, the conventional axial flux motor rotor with built-in magnetic poles adopts a common single-layer or multi-layer magnetic pole built-in structure, but the single-layer magnetic pole built-in structure in the prior art has weak magnetic gathering capacity and unobvious salient pole effect, and the multi-layer magnetic pole built-in structure has large permanent magnet consumption and increased axial size.
Therefore, it is desirable to provide a magnetic pole built-in axial flux electric machine rotor to solve the above technical problems.
Disclosure of Invention
The invention aims to provide an axial flux motor rotor with built-in magnetic poles and a motor, and solves the problems that the existing single-layer magnetic pole built-in structure is weak in magnetic gathering capacity and unobvious in salient pole effect, and a multilayer magnetic pole built-in structure permanent magnet is large in using amount and large in axial size.
In order to achieve the purpose, the invention adopts the following technical scheme:
there is provided a pole built-in axial flux electric machine rotor comprising:
the permanent magnet motor comprises a rotor core, wherein a first permanent magnet groove and a second permanent magnet groove are formed in the rotor core, the first permanent magnet groove and the second permanent magnet groove are alternately arranged at equal intervals along the circumferential direction of the rotor core, the length of the first permanent magnet groove extends along the circumferential direction of the rotor core, and the length of the second permanent magnet groove extends along the axial direction of the rotor core;
the first permanent magnets are arranged in the first permanent magnet grooves, the magnetizing directions of the two adjacent first permanent magnets are opposite, and the magnetizing directions of the first permanent magnets are the same as the axial direction of the rotor iron core;
the second permanent magnet is arranged in the second permanent magnet groove, the magnetic poles of the side faces of the first permanent magnet face the same as the magnetic poles of the end face of the outer side face of the rotor core, and the magnetization direction of the second permanent magnet is perpendicular to the axial direction of the rotor core.
As a preferable technical solution of the axial flux motor rotor with built-in magnetic poles, the inner diameter of the first permanent magnet groove along the radial direction of the rotor core gradually increases from the inner side surface to the outer side surface of the rotor core, and the inner diameter of the first permanent magnet groove along the axial direction of the rotor core does not change.
As a preferable technical solution of the axial flux motor rotor with a built-in magnetic pole, the inner diameter of the second permanent magnet groove along the radial direction of the rotor core from the inner side surface to the outer side surface of the rotor core is constant, and the inner diameter of the second permanent magnet groove along the axial direction of the rotor core is constant.
As a preferred technical scheme of the axial flux motor rotor with built-in magnetic poles, first magnetic isolation bridges are arranged on two sides of the first permanent magnet slot, and the two first magnetic isolation bridges have the same size in the axial direction of the rotor core.
As a preferred technical scheme of the axial flux motor rotor with built-in magnetic poles, second magnetic isolation bridges are arranged on two sides of the second permanent magnet slot, and the two second magnetic isolation bridges have the same size in the axial direction of the rotor core.
As a preferable technical solution of the axial flux motor rotor with built-in magnetic poles, two ends of the first permanent magnet and the inner side surface and the outer side surface of the rotor core are both arranged at intervals.
As a preferable technical solution of the axial flux motor rotor with built-in magnetic poles, two ends of the second permanent magnet and the inner side surface and the outer side surface of the rotor core are both arranged at intervals.
The motor comprises a motor stator and any one of the axial flux motor rotors with built-in magnetic poles, wherein the motor rotors are arranged on two sides of the motor stator and fixedly arranged on a rotor shaft, and the motor stator is rotatably arranged on the rotor shaft.
As a preferable aspect of the motor, the motor stator includes:
a stator winding assembly;
the shell is covered on the outer ring of the stator winding assembly;
the inner ring of the shell is covered on the inner ring of the stator winding assembly;
and the stator clamping plates are arranged on two sides of the stator winding assembly and connected with the shell and the inner ring of the shell.
As a preferable technical solution of the above motor, the stator clamping plate is made of a non-magnetic conductive and non-electric conductive material.
The invention has the beneficial effects that:
the invention provides an axial flux motor rotor with built-in magnetic poles, wherein a rotor iron core is alternately provided with a first permanent magnet groove and a second permanent magnet groove at intervals, a first permanent magnet is arranged in the first permanent magnet groove, a second permanent magnet is arranged in the second permanent magnet groove, the magnetization direction of the first permanent magnet is the same as the axial direction of the rotor iron core, the magnetization direction of the second permanent magnet is vertical to the axial direction of the rotor iron core, the first permanent magnet generates magnetic depression, the second permanent magnet generates magnetic protrusion, and reluctance torque is the difference generated by the magnetic fluxes of the first permanent magnet and the second permanent magnet, so that a salient pole ratio is formed; in addition, the rotor core is provided with the layer of permanent magnet, so that the axial size of the motor rotor is effectively reduced, and the eddy current loss of the magnetic steel is greatly reduced through the built-in permanent magnet.
The motor provided by the invention has the advantages that the power factor of the motor is improved, the utilization rate of the magnetic steel is improved, the axial size of the motor is small, and the performance of the motor is good.
Drawings
Fig. 1 is a schematic partial structural diagram of a motor according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a stator of an electric machine according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a stator winding assembly provided by an embodiment of the invention;
fig. 4 is a schematic structural diagram of a stator clamping plate provided in an embodiment of the invention;
FIG. 5 is a schematic structural diagram of a rotor of an electric machine according to an embodiment of the present invention;
FIG. 6 is an exploded view of a rotor of an electric machine provided by an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a first permanent magnet slot and a second permanent magnet slot provided in an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a rotor core, a first permanent magnet and a second permanent magnet according to an embodiment of the present invention;
fig. 9 is a schematic partial structural diagram of a rotor core provided in an embodiment of the present invention, in which a first permanent magnet and a second permanent magnet are mounted.
In the figure:
1. an electron rotor; 2. a motor stator; 3. a rotor shaft; 4. a bearing;
11. a rotor core; 12. a first permanent magnet slot; 13. a second permanent magnet slot; 14. a first permanent magnet; 15. a second permanent magnet; 18. a rotor support; 19. a carbon fiber sheath;
21. a stator winding assembly; 211. a stator winding; 212. a stator core; 22. a housing; 23. an inner ring of the casing; 24. stator clamping plates.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
The embodiment provides an axial flux motor rotor with built-in magnetic poles and a motor to solve the problems that in the prior art, a common single-layer or multi-layer magnetic pole built-in structure is adopted, the magnetic gathering capability of the single-layer magnetic pole built-in structure is weak, the salient pole effect is not obvious, the using amount of permanent magnets of the multi-layer magnetic pole built-in structure is large, and the axial size is increased.
Specifically, as shown in fig. 1 and fig. 2, the motor provided in this embodiment includes a motor stator 2 and an axial flux motor rotor with built-in magnetic poles, the motor rotor 2 is disposed on both sides of the motor stator 2, the motor rotor 2 is fixedly disposed on a rotor shaft 3, and the motor stator 2 is rotatably disposed on the rotor shaft 3.
A gap is reserved between the motor rotor 1 and the motor stator 2, and the motor stator 2 is rotatably connected with the rotor shaft 3 through a bearing 4.
The motor stator 2 comprises a stator winding assembly 21, an outer ring of the stator winding assembly 21 is covered with a shell 22, and an inner ring of the stator winding assembly 21 is covered with a shell inner ring 23. Stator clamping plates 24 are arranged on two sides of the stator winding assembly 21, and the machine shell 22 and the machine shell inner ring 23 are respectively connected with the stator clamping plates 24.
As shown in fig. 3 and 4, the stator winding assembly 21 includes a stator core 212 and a stator winding 211, the stator core 212 is formed by winding a thin silicon steel sheet in a circumferential direction, slots arranged at equal intervals need to be formed in the silicon steel sheet before winding, and a plurality of stator teeth uniformly distributed in the circumferential direction in an annular space are formed after winding.
The stator winding 211 is an integrated flat winding, is continuously woven and molded in the annular space along the circumferential direction, and is correspondingly mounted on a plurality of stator teeth of two stator cores.
In the present embodiment, the material of the stator clamping plate 24 is non-magnetic and non-conductive material. Preferably, in the present embodiment, the material of the stator clamping plate 24 is a non-magnetic and non-conductive material such as PEEK material, PC material, acryl material or bakelite plate.
As shown in fig. 5 to 9, the axial flux motor rotor with built-in magnetic poles provided in this embodiment includes a rotor core 11, where the rotor core 11 is provided with first permanent magnet slots 12 and second permanent magnet slots 13, the first permanent magnet slots 12 and the second permanent magnet slots 13 are alternately arranged at equal intervals along the circumferential direction of the rotor core 11, the first permanent magnet slots 12 extend along the circumferential direction of the rotor core 11, and the second permanent magnet slots 13 extend along the axial direction of the rotor core 11. First permanent magnets 14 are arranged in the first permanent magnet slots 12, the magnetizing directions of two adjacent first permanent magnets 14 are opposite, and the magnetizing direction of the first permanent magnets 14 is the same as the axial direction of the rotor core 11. A second permanent magnet 15 is arranged in the second permanent magnet groove 13, the magnetic pole of the side face, facing the first permanent magnet 14, of the second permanent magnet 15 is the same as the magnetic pole of the end face, facing the outer side face of the rotor core 11, of the first permanent magnet 14, and the magnetization direction of the second permanent magnet 15 is perpendicular to the axial direction of the rotor core 11.
Illustratively, a magnetic pole of one of the first permanent magnets 14 facing the outer side of the rotor core 11 is an S pole, a magnetic pole facing the inner side of the rotor core 11 is an N pole, a magnetic pole of the first permanent magnet 14 adjacent to the first permanent magnet 14 facing the outer side of the rotor core 11 is an N pole, and a magnetic pole facing the inner side of the rotor core 11 is an S pole. The first permanent magnets 14 and the second permanent magnets 15 are alternately arranged, the magnetic poles of the side faces, facing the first permanent magnets 14, of the second permanent magnets 15 are the same as the magnetic poles of the end, facing the outer side face of the rotor core 11, of the first permanent magnets 14, namely the magnetic poles of the side faces, facing the first permanent magnets 14, of the second permanent magnets 15 are N poles, and the magnetic poles of the end, facing the outer side face of the rotor core 11, of the first permanent magnets 14 are N poles, and the first permanent magnets are arranged in this way.
According to the axial flux motor rotor with built-in magnetic poles, the rotor core 11 is alternately provided with the first permanent magnet grooves 12 and the second permanent magnet grooves 13 at intervals, the first permanent magnets 14 are arranged in the first permanent magnet grooves 12, the second permanent magnets 15 are arranged in the second permanent magnet grooves 13, the magnetization direction of the first permanent magnets 14 is the same as the axial direction of the rotor core 11, the magnetization direction of the second permanent magnets 15 is perpendicular to the axial direction of the rotor core 11, the first permanent magnets 14 generate magnetic depressions, the second permanent magnets 15 generate magnetic protrusions, and reluctance torque is the difference value generated by the magnetic fluxes of the first permanent magnets 14 and the second permanent magnets 15, so that a salient pole ratio is formed; in addition, a layer of permanent magnet is arranged on the rotor iron core 11, so that the axial size of the motor rotor is effectively reduced, and the eddy current loss of the magnetic steel is greatly reduced through the built-in permanent magnet.
Specifically, the torque of the motor is represented by the sum of a permanent magnet torque, which is obtained by multiplying the magnetic flux of the permanent magnet and the electrified power, and a reluctance torque, which is obtained by the difference between the inductance of the first permanent magnet 14 and the inductance of the second permanent magnet 15. Since the magnetic permeability of the permanent magnets provided in the motor rotor 1 is close to that of air, the magnetism of the first permanent magnets 14 is depressed, and the magnetism of the second permanent magnets 15 is raised, and therefore, the second permanent magnets 15 are referred to as salient poles. The reluctance torque is a difference generated by the magnetic fluxes of the first permanent magnet 14 and the second permanent magnet 15, thereby forming a saliency ratio.
In this embodiment, the rotor core 11 is formed by axially winding silicon steel sheets, and the silicon steel sheets are strip-shaped thin silicon steel sheets, so that the winding formation is facilitated, and the slotting is also facilitated. In this embodiment, two types of slots need to be punched on the silicon steel sheets at equal intervals, the rotor core 11 is formed after the plurality of silicon steel sheets are wound and formed, and the first permanent magnet slots 12 and the second permanent magnet slots 13 are alternately distributed on the rotor core 11 along the circumferential direction.
The inner diameter of the first permanent magnet slot 12 along the radial direction of the rotor core 11 is gradually increased from the inner side surface of the rotor core 11 to the outer side surface, and the inner diameter of the first permanent magnet slot 12 along the axial direction of the rotor core 11 is unchanged so as to adapt to the installation of the first permanent magnet 14.
The inner diameter of the second permanent magnet slot 13 from the inner side surface to the outer side surface of the rotor core 11 in the radial direction of the rotor core 11 is constant, and the inner diameter of the second permanent magnet slot 13 in the axial direction of the rotor core 11 is constant so as to adapt to the installation of the second permanent magnet 15.
The both sides in first permanent magnet groove 12 all are equipped with first magnetism bridge that separates, and two first magnetism bridges are the same at rotor core 11's axial size to improve rotor core 11's structural strength, and do not influence electric motor rotor 1's performance.
The two sides of the second permanent magnet slot 13 are provided with second magnetic isolation bridges, and the two second magnetic isolation bridges have the same axial size in the rotor core 11, so that the structural strength of the rotor core 11 is improved, and the performance of the motor rotor 1 is not affected.
First permanent magnet 14 pegs graft in first permanent magnet groove 12, and the both ends of first permanent magnet 14 all set up with rotor core 11's medial surface and lateral surface interval to form arc air groove. The arc-shaped air groove forms a planar magnetic gap, which increases the magnetic resistance passing through the first permanent magnet 14 in the axial direction of the rotor core 11, so that the magnetic resistance passing through the first permanent magnet 14 in the axial direction of the rotor core 11 is more recessed, thereby increasing the magnetic resistance torque. The smaller the gap between the two ends of the first permanent magnet 14 and the inner side surface and the outer side surface of the rotor core 11, the better, the more effective the leakage flux can be reduced, but the specific size of the gap is not particularly limited herein.
The second permanent magnet 15 is inserted into the second permanent magnet groove 13, and two ends of the second permanent magnet 15 are arranged at intervals with the inner side face and the outer side face of the rotor core 11. The smaller the gap between the two ends of the second permanent magnet 15 and the inner side surface and the outer side surface of the rotor core 11, the better, the more effective the leakage flux can be reduced, but the specific size of the gap is not particularly limited herein.
In the embodiment, the induced voltage when the motor is in no-load has a proportional relationship with the magnetic flux of the permanent magnet, and the larger the magnetic flux of the permanent magnet is, the higher the induced voltage when the motor is in no-load is. In this embodiment, a planar magnetic gap is formed by providing an arc-shaped air groove, and the permanent magnet torque and the induced voltage at the time of no load are reduced. Although the permanent magnet torque is reduced, the decrease in the motor torque as a whole can be suppressed by the increase in the reluctance torque. Thus, the motor torque can be increased while suppressing the induced voltage at the time of idling.
In this embodiment, the first permanent magnet 14 is disposed on the rotor core 11, and two ends of the first permanent magnet 14 are disposed at intervals from the outer surface and the inner surface of the rotor core 11, so that the no-load induced voltage of the motor is suppressed, the torque of the motor is increased, and the power factor of the motor is increased. A layer of permanent magnet is arranged in the motor rotor 1, the 3-direction length of the rotor shaft is effectively reduced, and the eddy current loss of the magnetic steel is greatly reduced through the built-in permanent magnet.
And a rotor bracket 18 is further arranged on one side of the rotor core 11, and a carbon fiber sheath 19 is sleeved on the other side of the rotor core.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. An axial flux electric machine rotor with built-in magnetic poles, comprising:
the permanent magnet motor comprises a rotor core (11), wherein a first permanent magnet groove (12) and a second permanent magnet groove (13) are formed in the rotor core (11), the first permanent magnet groove (12) and the second permanent magnet groove (13) are alternately arranged at equal intervals along the circumferential direction of the rotor core (11), the length of the first permanent magnet groove (12) extends along the circumferential direction of the rotor core (11), and the length of the second permanent magnet groove (13) extends along the axial direction of the rotor core (11);
the first permanent magnets (14) are arranged in the first permanent magnet grooves (12), the magnetizing directions of the two adjacent first permanent magnets (14) are opposite, and the magnetizing directions of the first permanent magnets (14) are the same as the axial direction of the rotor core (11);
second permanent magnet (15), set up in second permanent magnet groove (13), second permanent magnet (15) orientation the magnetic pole of the side of first permanent magnet (14) with first permanent magnet (14) orientation the magnetic pole of the terminal surface of rotor core (11) lateral surface is the same, the magnetization direction perpendicular to of second permanent magnet (15) the axial of rotor core (11).
2. The pole-built axial-flux electric machine rotor of claim 1, wherein the first permanent magnet slot (12) has a gradually increasing inner diameter from an inner side to an outer side of the rotor core (11) in a radial direction of the rotor core (11), and the inner diameter of the first permanent magnet slot (12) in an axial direction of the rotor core (11) is constant.
3. The pole-built axial flux electric machine rotor according to claim 1, wherein the second permanent magnet slot (13) has a constant inner diameter from the inner side to the outer side of the rotor core (11) in the radial direction of the rotor core (11), and the second permanent magnet slot (13) has a constant inner diameter in the axial direction of the rotor core (11).
4. Magnetic pole built-in axial flux electric machine rotor according to claim 1, characterized in that both sides of the first permanent magnet slot (12) are provided with first magnetic isolation bridges, both of which have the same dimension in the axial direction of the rotor core (11).
5. The rotor of a pole-built axial flux machine according to claim 1, wherein the second permanent magnet slot (13) is provided with second magnetic isolation bridges on both sides, and the two second magnetic isolation bridges have the same size in the axial direction of the rotor core (11).
6. The rotor of a pole-built axial flux machine according to claim 1, wherein both ends of the first permanent magnet (14) are spaced apart from both the inner and outer side surfaces of the rotor core (11).
7. The rotor of a pole-built axial flux machine according to claim 1, wherein both ends of the second permanent magnet (15) are spaced from both the inner and outer sides of the rotor core (11).
8. An electric machine, characterized in that it comprises a machine stator (2) and a machine rotor with built-in magnetic poles according to any one of claims 1 to 7, the machine rotor (1) is arranged on both sides of the machine stator (2), the machine rotor (1) is fixedly arranged on a rotor shaft (3), and the machine stator (2) is rotatably arranged on the rotor shaft (3).
9. The machine according to claim 8, characterized in that the machine stator (2) comprises:
a stator winding assembly (21);
the shell (22) is covered on the outer ring of the stator winding assembly (21);
the inner ring (23) of the machine shell is covered on the inner ring of the stator winding assembly (21);
and the stator clamping plates (24) are arranged on two sides of the stator winding assembly (21) and connected with the machine shell (22) and the machine shell inner ring (23).
10. An electric machine according to claim 9, characterized in that the material of the stator clamping plates (24) is non-magnetically conductive and non-electrically conductive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210676546.3A CN114938090A (en) | 2022-06-15 | 2022-06-15 | Axial flux motor rotor with built-in magnetic poles and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210676546.3A CN114938090A (en) | 2022-06-15 | 2022-06-15 | Axial flux motor rotor with built-in magnetic poles and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114938090A true CN114938090A (en) | 2022-08-23 |
Family
ID=82868754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210676546.3A Pending CN114938090A (en) | 2022-06-15 | 2022-06-15 | Axial flux motor rotor with built-in magnetic poles and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114938090A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024055163A1 (en) * | 2022-09-13 | 2024-03-21 | 宁德时代(上海)智能科技有限公司 | Motor and rotor thereof |
| WO2024113279A1 (en) * | 2022-11-30 | 2024-06-06 | 宁德时代新能源科技股份有限公司 | Electric device, and electric motor and rotor thereof |
-
2022
- 2022-06-15 CN CN202210676546.3A patent/CN114938090A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024055163A1 (en) * | 2022-09-13 | 2024-03-21 | 宁德时代(上海)智能科技有限公司 | Motor and rotor thereof |
| WO2024113279A1 (en) * | 2022-11-30 | 2024-06-06 | 宁德时代新能源科技股份有限公司 | Electric device, and electric motor and rotor thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101820238B (en) | Method and apparatus for a permanent magnet machine with asymmetrical rotor magnets | |
| CN114938090A (en) | Axial flux motor rotor with built-in magnetic poles and motor | |
| JP2011223836A (en) | Permanent magnet type revolving armature | |
| JP2012244765A (en) | Rotor of rotary electric machine | |
| US20110163618A1 (en) | Rotating Electrical Machine | |
| KR102623591B1 (en) | Salient pole hybrid excitation motor | |
| CN113381540A (en) | Built-in permanent magnet rotor structure of axial magnetic motor | |
| CN113078792B (en) | Axial magnetic field alternating pole brushless hybrid excitation motor | |
| CN115001177A (en) | Rotor assembly and motor | |
| CN115065181A (en) | Rotor assembly and motor | |
| CN113131700B (en) | High power density in-wheel motor structure | |
| WO2013075288A1 (en) | Rotor structure for permanent magnet synchronous electric motor and permanent magnet synchronous electric motor | |
| CN109672288A (en) | A kind of surface-built-in permanent magnet motor rotor | |
| CN110690803B (en) | Low-cost alternating pole permanent magnet hub motor for driving electric vehicle | |
| CN110138165B (en) | Composite magnetic circuit stator split type axial permanent magnet motor | |
| CN111711292A (en) | Rotor structure, motor and compressor | |
| CN217469587U (en) | Rotor assembly and motor | |
| CN212412877U (en) | High-speed inner rotor motor for electric motorcycle | |
| CN212435453U (en) | Rotor structure, motor and compressor | |
| CN112003399A (en) | Rotor, motor, compressor, air conditioner and vehicle | |
| CN112003401A (en) | Rotor, motor, compressor, air conditioner and vehicle | |
| CN112072815A (en) | High-speed inner rotor motor for electric motorcycle | |
| CN221126990U (en) | Motor and vehicle | |
| CN212435455U (en) | Rotor structure, motor and compressor | |
| CN217469586U (en) | Rotor assembly and motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |