CN111541325B - Axial magnetic field permanent magnet motor combined magnetizing type permanent magnet built-in rotor - Google Patents
Axial magnetic field permanent magnet motor combined magnetizing type permanent magnet built-in rotor Download PDFInfo
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- CN111541325B CN111541325B CN202010365687.4A CN202010365687A CN111541325B CN 111541325 B CN111541325 B CN 111541325B CN 202010365687 A CN202010365687 A CN 202010365687A CN 111541325 B CN111541325 B CN 111541325B
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- back yoke
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2793—Rotors axially facing stators
-
- 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
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- 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
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- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a combined magnetizing permanent magnet built-in rotor of an axial magnetic field permanent magnet motor, which comprises two rotor disks arranged on a rotating shaft, wherein a first rotor disk comprises a rotor iron core, a permanent magnet, a rotor supporting shell and a rotor back yoke; the rotor back yoke is arranged on the rotor supporting shell, and the first permanent magnets and the second permanent magnets are alternately and uniformly arranged on the rotor back yoke in the circumferential direction; fixing the rotor core and a second permanent magnet arranged on the rotor back yoke together, thereby keeping the permanent magnet fixed in the radial direction and the axial direction; the rotor core, the permanent magnet, the rotor support shell and the rotor back yoke are fixed together to form a first rotor disc and are arranged on the rotating shaft, then the first rotor disc is connected with a second rotor disc through the rotating shaft, and the position of the second rotor disc in the axial direction is fixed to form a double-rotor structure. The permanent magnet rotor has good magnetism gathering effect, high air gap magnetic density and large reluctance torque.
Description
Technical Field
The invention relates to the technical field of axial flux permanent magnet motors, in particular to a combined magnetizing permanent magnet built-in rotor of an axial magnetic field permanent magnet motor.
Background
Axial field permanent magnet machines, also known as disc permanent magnet machines, are an attractive alternative to cylindrical radial flux permanent magnet machines due to their pancake shape, compact structure and high power density. The built-in type and the surface-mounted type are two main rotor magnetic circuit structures, and in an axial magnetic field permanent magnet motor, a permanent magnet surface-mounted type structure is generally adopted. The major drawbacks of the surface-mount structure are: the surface eddy current loss of the rotor permanent magnet is serious, the permanent magnet is difficult to fix, the structural strength of the rotor is not high, reluctance torque cannot be utilized, the air gap flux density is low, and the like.
The patent "an axial magnetic field permanent magnetism coreless motor with gather magnetic function" adopts the method that sets up the permanent magnetism strip that reduces the magnetic leakage in the gap between two adjacent opposite sex fan-shaped main magnetic poles of surface mounted permanent magnet, has reached and has gathered the magnetism effect, the patent "a wheel hub motor based on gather magnetic structure rotor axial magnetic field" realizes gathering the magnetism effect through setting up the first sector magnet and the second sector magnet that magnetize the direction mutually perpendicular, but these two kinds of methods adopt the permanent magnet surface mounting formula, can't avoid the shortcoming of surface mounted structure. The patent "stator does not have effect that unshakable in one's determination Halbach permanent magnet array axial flux motor" adopts Halbach permanent magnet array to reach high air gap flux density's effect, but is big to the permanent magnet quantity, and every section permanent magnet under every utmost point magnetizes the direction difference, has increased the degree of difficulty of processing and the installation of permanent magnet to what still adopted is surface mounted formula structure.
In summary, in the rotor structure of the axial magnetic field permanent magnet motor capable of realizing the magnetic concentration effect, a permanent magnet surface-mounted structure is almost adopted, so that the defect of the permanent magnet surface-mounted rotor structure is difficult to avoid, and the rotor structure has the defects of large eddy current loss of the permanent magnet, difficult installation and protection of the permanent magnet, low structural strength, incapability of utilizing reluctance torque, low air gap flux density, high cost and the like.
Disclosure of Invention
The invention aims to provide a permanent magnet motor combined magnetizing type permanent magnet built-in rotor with an axial magnetic field, which has the advantages of good magnetic concentration effect, high air gap flux density and large reluctance torque.
The technical solution for realizing the purpose of the invention is as follows: a permanent magnet motor combined magnetizing permanent magnet built-in rotor with an axial magnetic field comprises a rotating shaft, a first rotor disc and a second rotor disc, wherein the first rotor disc and the second rotor disc are arranged on the rotating shaft in a permanent magnet surface-to-surface mode; the first rotor disc comprises a rotor iron core, permanent magnets, a rotor supporting shell and a rotor back yoke, wherein the permanent magnets comprise a first permanent magnet and a second permanent magnet, and the rotor iron core comprises a rotor outer iron core and a rotor inner iron core;
the rotor back yoke is arranged on the rotor supporting shell, and the first permanent magnets and the second permanent magnets are alternately and uniformly arranged on the rotor back yoke in the circumferential direction; fixing the rotor core and a second permanent magnet arranged on the rotor back yoke together, thereby keeping the permanent magnet fixed in the radial direction and the axial direction;
the rotor core, the permanent magnet, the rotor support shell and the rotor back yoke are fixed together to form a first rotor disc and are arranged on the rotating shaft, then the first rotor disc is connected with a second rotor disc through the rotating shaft, and the position of the second rotor disc in the axial direction is fixed to form a double-rotor structure.
Furthermore, permanent magnets are arranged on the first rotor disk and the second rotor disk, and the second rotor disk is the same as the first rotor disk in structure.
Furthermore, the rotor back yoke is arranged in the rotor supporting shell and is bonded through structural adhesive; the rotor supporting shell is used for protecting the rotor core and the permanent magnet.
Further, the thickness and the width of the first permanent magnet and the second permanent magnet are different; the first permanent magnet is magnetized tangentially, the magnetizing directions of two adjacent tangentially magnetized permanent magnets are opposite, and the two tangentially magnetized permanent magnets are positioned between the adjacent axially magnetized permanent magnets and the rotor inner iron core; the second permanent magnet is axially magnetized and is positioned between the rotor outer iron core and the rotor inner iron core; the first permanent magnet and the second permanent magnet are alternately and uniformly arranged on the rotor back yoke in the circumferential direction according to the magnetizing direction, the thickness, the width and the magnetizing direction.
Further, the number of the axially magnetized second permanent magnets and the number of the tangentially magnetized first permanent magnets are equal.
Further, the contact surface of the permanent magnet and the rotor back yoke is coated with structural adhesive to bond the permanent magnet and the rotor back yoke.
Furthermore, the permanent magnet is in an isosceles trapezoid shape, the upper bottom edge and the lower bottom edge of the trapezoid are both in arc shapes, the arc diameters of the upper bottom edge and the lower bottom edge are respectively the same as the inner diameter and the outer diameter of the rotor, and a permanent magnet built-in structure is adopted.
Furthermore, the diameters of the inner circle and the outer circle of the rotor back yoke are respectively the same as the diameters of the circles corresponding to the two arc edges of the upper bottom and the lower bottom of the permanent magnet.
Further, the axial magnetic field permanent magnet motor adopts a stator iron core structure, and can also be a non-iron core structure.
Compared with the prior art, the invention has the following remarkable advantages: (1) by adopting the method of combining the permanent magnets in different shapes and magnetizing modes, a magnetic circuit forms a complete magnetic loop through the rotor iron core, the permanent magnets and the stator iron core, so that the main magnetic flux is increased, the magnetic leakage is reduced, the magnetic concentration is realized, and the air gap flux density is improved; (2) by adopting the built-in structure of the permanent magnet, the motor can obtain better weak magnetic performance and wider constant power range, and the permanent magnet is not easy to demagnetize; (3) the permanent magnets in the rotor are arranged in the rotor slots, the rotor structure is firm, the reluctance torque generated by the asymmetry of the rotor magnetic circuit can be fully utilized, and the permanent magnet rotor has the characteristics of easiness in installation of the permanent magnets, high structural strength of the rotor, obvious salient pole effect of a motor, good field weakening performance and large reluctance torque; (4) the rotor has a simple structure and low installation difficulty, the using amount of the permanent magnet is saved, the processing difficulty of the permanent magnet is reduced, the manufacturing cost of the rotor is reduced, and a better magnetism gathering effect can be realized.
Drawings
Fig. 1 is an exploded view of a permanent magnet motor combined magnetized permanent magnet built-in rotor with an axial magnetic field.
Fig. 2 is a two-dimensional structure diagram of a combined magnetized permanent magnet built-in rotor of an axial magnetic field permanent magnet motor.
Fig. 3 is a schematic magnetic circuit diagram of an axial field permanent magnet machine.
Fig. 4 is a three-dimensional structure diagram of a single rotor disk of the motor.
Fig. 5 is a three-dimensional structural view of a motor rotor.
Detailed Description
The invention relates to a permanent magnet combined magnetizing type permanent magnet built-in rotor with an axial magnetic field, which comprises a rotating shaft 5, a first rotor disc 6 and a second rotor disc 7, wherein the first rotor disc 6 and the second rotor disc 7 are arranged on the rotating shaft 5 in a manner that permanent magnet surfaces are opposite; the first rotor disc 6 comprises a rotor iron core 1, permanent magnets 2, a rotor supporting shell 3 and a rotor back yoke 4, wherein the permanent magnets 2 comprise first permanent magnets 2a and second permanent magnets 2b, and the rotor iron core 1 comprises a rotor outer iron core 1a and a rotor inner iron core 1 b;
the rotor back yoke 4 is arranged on the rotor supporting shell 3, and the first permanent magnets 2a and the second permanent magnets 2b are alternately and uniformly arranged on the rotor back yoke 4 in the circumferential direction; fixing the rotor core 1 with a second permanent magnet 2b arranged on the rotor back yoke 4, thereby holding the permanent magnet fixed in the radial and axial directions;
the rotor core 1, the permanent magnet 2, the rotor support shell 3 and the rotor back yoke 4 are fixed together to form a first rotor disc 6 and are installed on a rotating shaft 5, and then the first rotor disc 6 is connected with a second rotor disc 7 through the rotating shaft 5 to fix the position of the second rotor disc 7 in the axial direction, so that a double-rotor structure is formed.
Further, permanent magnets 2 are arranged on the first rotor disk 6 and the second rotor disk 7, and the second rotor disk 7 is the same as the first rotor disk 6 in structure.
Further, the rotor back yoke 4 is arranged in the rotor supporting shell 3 and is bonded through structural adhesive; the rotor support case 3 protects the rotor core 1 and the permanent magnet 2.
Further, the thickness and the width of the first permanent magnet 2a and the second permanent magnet 2b are different; the first permanent magnet 2a is magnetized tangentially, the magnetizing directions of two adjacent tangentially magnetized permanent magnets are opposite, and the two tangentially magnetized permanent magnets are positioned between the adjacent axially magnetized permanent magnets and the rotor inner iron core 1 b; the second permanent magnet 2b is axially magnetized and is positioned between the rotor outer iron core 1a and the rotor inner iron core 1 b; the first permanent magnet 2a and the second permanent magnet 2b are alternately and uniformly arranged on the rotor back yoke 4 in the circumferential direction according to the magnetizing direction and the thickness, width and magnetizing direction.
Further, the number of the axially magnetized second permanent magnets 2b and the tangentially magnetized first permanent magnets 2a is equal.
Further, the contact surface of the permanent magnet 2 and the rotor back yoke 4 is coated with structural adhesive to bond the two.
Furthermore, the permanent magnet 2 is in an isosceles trapezoid shape, the upper bottom edge and the lower bottom edge of the trapezoid are both in arc shapes, the arc diameters of the upper bottom edge and the lower bottom edge are respectively the same as the inner diameter and the outer diameter of the rotor, and a permanent magnet built-in structure is adopted.
Furthermore, the inner circle diameter and the outer circle diameter of the rotor back yoke 4 are respectively the same as the circle diameters corresponding to the two arc edges of the upper bottom and the lower bottom of the permanent magnet 2.
Further, the axial magnetic field permanent magnet motor adopts a stator iron core structure, and can also be a non-iron core structure.
The first rotor disk 6, the second rotor disk 7, the two rotor disks and the stator disk form an air gap and are coaxially arranged on the rotating shaft 5, and each rotor disk is composed of a rotor core 1, a permanent magnet 2, a rotor supporting shell 3 and a rotor back yoke 4; the rotor back yoke 4 is mounted on the rotor support housing 3; trapezoidal permanent magnets magnetized axially and radially are alternately arranged in the circumferential direction of the rotor back yoke 4, and a permanent magnet built-in structure is adopted; the thickness and the width of the permanent magnets 2a and 2b are different, the permanent magnets 2a are magnetized in a tangential direction, and the two adjacent directions are opposite and are positioned between the axial magnetized permanent magnets and the rotor inner iron core; the permanent magnet 2b is axially magnetized, is positioned between the inner iron core and the outer iron core of the rotor and is trapezoidal in shape. The permanent magnet combination and rotor core of the axial magnetic field permanent magnet motor combined magnetizing type permanent magnet built-in rotor structure can realize the magnetism gathering effect of the permanent magnet rotor by adopting the matching of the permanent magnet combination with different magnetizing modes and the rotor core, and the air gap flux density is improved; meanwhile, compared with a surface-mounted permanent magnet rotor, the permanent magnet built-in structure has the advantages of obvious salient pole effect of the motor, large reluctance torque, simple structure of the rotor, low installation difficulty, saving of the using amount of the permanent magnet, reduction of the processing difficulty of the permanent magnet and reduction of the manufacturing cost of the rotor.
The invention provides a permanent magnet motor combined magnetizing type permanent magnet built-in rotor structure with an axial magnetic field and a motor related to the same, and further detailed description is given for the purposes of making the purpose, the technical scheme and the effect of the invention clearer and referring to the attached drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention is described in further detail below with reference to the figures and specific examples.
Examples
The invention provides a permanent magnet motor combined magnetizing type permanent magnet built-in rotor structure with an axial magnetic field, which is provided with two permanent magnet rotor discs, wherein the two rotors are arranged on a rotating shaft 5 in a mode of permanent magnet surface facing each other. The rotor structure mainly includes: the rotor comprises a rotor outer iron core 1a, a rotor inner iron core 1b, permanent magnets 2a, 2b, a rotor support shell 3, a rotor back yoke 4, a rotating shaft 5, a first rotor disc 6 and a second rotor disc 7.
The rotor back yoke 4 is arranged on the rotor supporting shell 3, the bonding strength is enhanced through structural adhesive, the rotor supporting shell 3 can enhance the structural strength of the rotor and is used for protecting the iron core 1 and the permanent magnet 2 and reducing the influence of centrifugal force on the rotor structure when the rotor runs at high speed, the permanent magnet 2 is alternately and uniformly arranged on the rotor back yoke 4 in the circumferential direction according to the magnetizing direction, the thickness and the width, then the rotor iron core 1 is arranged on the permanent magnet 2b so as to fix the trapezoidal permanent magnet, and the structural adhesive is coated on the contact surface of the trapezoidal permanent magnet 2 and the magnetic conductive back yoke 4 to improve the bonding strength between the trapezoidal permanent magnet and the magnetic conductive back yoke 4; the formed rotor disk structure 6 is further connected with another rotor disk 7 through the rotating shaft 5, and the position of the rotor disk 7 in the axial direction is fixed, so that a double-rotor structure is formed.
Furthermore, the trapezoidal permanent magnet 2 is in an isosceles trapezoid shape, the thicknesses and the widths of the permanent magnets 2a and 2b are different, the upper bottom edge and the lower bottom edge of the trapezoid are both in arc shapes, and the arc diameters of the upper bottom edge and the lower bottom edge are respectively the same as the inner diameter and the outer diameter of the rotor; when the magnetizing direction of the trapezoidal permanent magnet is axial, the thickness of the permanent magnet is slightly smaller, the width of the permanent magnet is slightly larger, and when the permanent magnet is tangential, the thickness of the permanent magnet is slightly larger, and the width of the permanent magnet is slightly smaller.
Further, the rotor back yoke 4 is mounted on the rotor support housing 3, and the connection mode is connection through structural adhesive; the diameters of the inner circle and the outer circle of the rotor back yoke 4 are respectively the same as the diameters of the circles corresponding to the two arc edges of the upper bottom and the lower bottom of the trapezoidal permanent magnet 2.
Further, the rotor support housing 3 is connected to another rotor disk 6 via a rotating shaft 5.
With reference to fig. 1, the permanent magnet motor combined magnetizing permanent magnet built-in rotor with an axial magnetic field according to the present invention comprises a rotor outer core 1a and a rotor inner core 1b, a permanent magnet 2a and a permanent magnet 2b, a rotor support housing 3, a rotor back yoke 4, a rotating shaft 5, a first rotor disc 6, and a second rotor disc 7;
as shown in figure 2, the permanent magnet motor combined magnetizing type permanent magnet built-in rotor with the axial magnetic field has the advantages that the thickness and the width of the permanent magnets 2a and 2b are different, in the rotor structure, the rotor core is divided into an inner layer and an outer layer, the trapezoidal permanent magnet 2a is magnetized in a tangential direction, the magnetizing directions of two adjacent tangential magnetizing permanent magnets are opposite, and the two adjacent tangential magnetizing permanent magnets are positioned between the adjacent axial magnetizing permanent magnets and the rotor inner core; the trapezoidal permanent magnet 2b is magnetized axially and is positioned between the inner iron core and the outer iron core of the rotor.
Fig. 3 is a schematic view of a magnetic circuit of the motor, with the axially magnetized permanent magnets forming the magnetic circuit of the motor in the magnetization direction, as shown by the solid magnetic circuit in fig. 3. The tangentially magnetized permanent magnet forms a magnetic path shown by a dotted line in fig. 3 along the magnetizing direction, so that the magnetic leakage of the rotor back yoke is reduced, and the main magnetic flux is increased. The magnetic circuit forms a complete magnetic loop through the rotor iron core, the permanent magnet and the stator iron core, increases the magnetic force linear density between the main magnetic poles, achieves the purpose of magnetic concentration, improves the air gap flux density, and further improves the power density of the motor.
As shown in fig. 4, the permanent magnets 2 are alternately and uniformly arranged on the rotor back yoke 4 in the circumferential direction according to the magnetizing direction, the thickness and the width, and then the rotor core 1 is installed on the permanent magnet 2b, so as to fix the trapezoidal permanent magnet, wherein the contact surface between the trapezoidal permanent magnet 2 and the magnetic conductive back yoke 4 is coated with structural adhesive to improve the bonding strength between the two; a single rotor disk can be formed by this method of installation, as shown in fig. 4.
And then the single rotor disc structure formed by the figure 4 is arranged on the rotor supporting shell 3, and the bonding strength is enhanced by structural adhesive. The rotor support housing 3 can enhance the structural strength of the rotor, is used for protecting the iron core 1 and the permanent magnet 2, and reduces the influence of centrifugal force on the rotor structure when the rotor runs at high speed. At this time, the first rotor disk 6 is formed and is connected to the other rotor disk 7 via the rotating shaft 5, and the position of the rotor disk 7 in the axial direction is fixed, thereby forming a double rotor structure, as shown in fig. 5.
The invention relates to a permanent magnet motor combined magnetizing type permanent magnet built-in rotor structure with an axial magnetic field, which adopts a method of combining permanent magnets in different shapes and magnetizing modes, and a magnetic circuit forms a complete magnetic loop through a rotor iron core, the permanent magnets and a stator iron core, thereby increasing main magnetic flux, reducing magnetic leakage, achieving the aim of magnetic concentration and improving air gap flux density. The permanent magnet built-in structure is adopted, so that the defects of the adopted permanent magnet surface-mounted rotor structure are avoided, such as serious eddy current loss on the surface of the rotor permanent magnet; the permanent magnet is difficult to fix; the structural strength of the rotor is not high; reluctance torque cannot be utilized; the air gap flux density is typically not high. Compared with a surface-mounted rotor structure, the permanent magnet rotor structure has the characteristics of easiness in permanent magnet installation, high rotor structure strength, obvious motor salient pole effect, good weak magnetic performance and large reluctance torque, is simple in rotor structure and low in installation difficulty, saves the using amount of the permanent magnet, reduces the processing difficulty of the permanent magnet, reduces the manufacturing cost of the rotor, and can realize a better magnetic gathering effect.
Claims (6)
1. The permanent magnet built-in rotor is characterized by comprising a rotating shaft (5), a first rotor disc (6) and a second rotor disc (7), wherein the first rotor disc (6) and the second rotor disc (7) are arranged on the rotating shaft (5) in a manner that permanent magnet surfaces are opposite; the first rotor disc (6) comprises a rotor iron core (1), a permanent magnet (2), a rotor supporting shell (3) and a rotor back yoke (4), wherein the permanent magnet (2) comprises a first permanent magnet (2 a) and a second permanent magnet (2 b), and the rotor iron core (1) comprises a rotor outer iron core (1 a) and a rotor inner iron core (1 b);
the rotor back yoke (4) is arranged on the rotor supporting shell (3), and the first permanent magnets (2 a) and the second permanent magnets (2 b) are alternately and uniformly arranged on the rotor back yoke (4) in the circumferential direction; fixing the rotor core (1) and a second permanent magnet (2 b) arranged on a rotor back yoke (4) together, thereby keeping the permanent magnet fixed in the radial direction and the axial direction;
the rotor core (1), the permanent magnet (2), the rotor supporting shell (3) and the rotor back yoke (4) are fixed together to form a first rotor disc (6) and are installed on the rotating shaft (5), and then the first rotor disc is connected with a second rotor disc (7) through the rotating shaft (5), and the position of the second rotor disc (7) in the axial direction is fixed to form a double-rotor structure;
the first rotor disc (6) and the second rotor disc (7) are both provided with permanent magnets (2), and the second rotor disc (7) is the same as the first rotor disc (6) in structure;
the rotor back yoke (4) is arranged in the rotor supporting shell (3) and is bonded through structural adhesive; the rotor supporting shell (3) is used for protecting the rotor iron core (1) and the permanent magnet (2);
the thickness and the width of the first permanent magnet (2 a) and the second permanent magnet (2 b) are different; the first permanent magnet (2 a) is magnetized tangentially, the magnetizing directions of two adjacent tangentially magnetized permanent magnets are opposite, and the tangentially magnetized permanent magnets are positioned between the adjacent axially magnetized permanent magnets and the rotor inner iron core (1 b); the second permanent magnet (2 b) is axially magnetized and is positioned between the rotor outer iron core (1 a) and the rotor inner iron core (1 b); the first permanent magnet (2 a) and the second permanent magnet (2 b) are alternately and uniformly arranged on the rotor back yoke (4) in the circumferential direction according to the magnetizing direction and the thickness, width and magnetizing direction.
2. The combined magnetized permanent magnet internal rotor according to claim 1, wherein the number of axially magnetized second permanent magnets (2 b) and tangentially magnetized first permanent magnets (2 a) is equal.
3. The combined magnetized permanent magnet internal rotor of the axial magnetic field permanent magnet motor according to claim 1, wherein the contact surface of the permanent magnet (2) and the rotor back yoke (4) is coated with structural adhesive to bond the permanent magnet and the rotor back yoke.
4. The combined magnetized permanent magnet built-in rotor of the axial magnetic field permanent magnet motor according to claim 2, wherein the permanent magnet (2) is in an isosceles trapezoid shape, the upper and lower bottom edges of the trapezoid are both arc-shaped, the arc diameters of the upper and lower bottom edges are respectively the same as the inner and outer diameters of the rotor, and a permanent magnet built-in structure is adopted.
5. The combined magnetized permanent magnet built-in rotor of the axial magnetic field permanent magnet motor according to claim 4, wherein the diameters of the inner circle and the outer circle of the rotor back yoke (4) are respectively the same as the diameters of the circles corresponding to the two arc-shaped sides of the upper bottom and the lower bottom of the permanent magnet (2).
6. The combined magnetized permanent magnet internal rotor of the axial magnetic field permanent magnet motor according to claim 4, wherein the axial magnetic field permanent magnet motor adopts a stator iron core structure or a non-iron core structure.
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| CN202010365687.4A CN111541325B (en) | 2020-04-30 | 2020-04-30 | Axial magnetic field permanent magnet motor combined magnetizing type permanent magnet built-in rotor |
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| CN202010365687.4A CN111541325B (en) | 2020-04-30 | 2020-04-30 | Axial magnetic field permanent magnet motor combined magnetizing type permanent magnet built-in rotor |
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| CN112152409B (en) * | 2020-08-19 | 2023-04-18 | 沈阳工业大学 | Yoke-free segmented stator and rotor core axial flux permanent magnet motor |
| CN112134381B (en) * | 2020-08-19 | 2023-03-24 | 沈阳工业大学 | Built-in magnetic steel composite pole rotor for axial flux permanent magnet motor |
| CN112152355B (en) * | 2020-08-19 | 2023-04-25 | 沈阳工业大学 | Built-in magnetic steel tangential magnetizing disc type motor rotor |
| CN112398249A (en) * | 2020-10-19 | 2021-02-23 | 郑州佛光发电设备有限公司 | Permanent magnet motor rotor with radial and axial magnetism gathering characteristics |
| CN112491174A (en) * | 2020-11-30 | 2021-03-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Reluctance rotor, motor and compressor |
| CN112564346B (en) * | 2020-12-01 | 2021-10-29 | 东南大学 | High-torque-density axial magnetic field permanent magnet motor rotor structure and motor thereof |
| CN113381540B (en) * | 2021-06-16 | 2024-01-30 | 南京理工大学 | Built-in permanent magnet rotor structure of axial flux motor |
| CN113595283B (en) * | 2021-08-04 | 2022-07-15 | 中山大洋电机股份有限公司 | Rotor of disc type permanent magnet motor and disc type permanent magnet motor using same |
| CN114006489B (en) * | 2021-10-18 | 2023-03-24 | 南京航空航天大学 | Direct-drive alternating-pole permanent magnet hub motor |
| CN113852227A (en) * | 2021-11-01 | 2021-12-28 | 南通大学 | High-magnetism-gathering type hybrid permanent magnet rotor structure |
| CN114189074A (en) * | 2021-12-27 | 2022-03-15 | 南京理工大学 | Built-in permanent magnet rotor disc and disc type motor |
| CN115001172B (en) * | 2022-07-21 | 2023-08-04 | 南京理工大学 | Axial magnetizing permanent magnet motor rotor structure and permanent magnet motor |
| CN115411857A (en) * | 2022-08-15 | 2022-11-29 | 华为数字能源技术有限公司 | Axial motor rotor, axial motor, power assembly and vehicle |
| WO2024055169A1 (en) * | 2022-09-13 | 2024-03-21 | 宁德时代(上海)智能科技有限公司 | Rotor of disc-type electric motor, and disc-type electric motor and electric device |
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| JP4692090B2 (en) * | 2005-06-16 | 2011-06-01 | 株式会社富士通ゼネラル | Axial air gap type electric motor |
| CN1773817A (en) * | 2005-11-11 | 2006-05-17 | 沈阳工业大学 | AC plate type non-core permasyn motor based on Halbach array |
| CN101399475B (en) * | 2007-09-28 | 2012-05-02 | 豪柏国际(马达)集团有限公司 | Brushless motor and manufacturing method thereof |
| CN202424338U (en) * | 2011-12-16 | 2012-09-05 | 铜陵浩岩节能科技有限公司 | Rotor of permanent-magnet synchronous motor |
| CN104167893B (en) * | 2013-05-17 | 2018-11-02 | 胡宪文 | Axial flux generator |
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