CN108736676B - Penetrating radial magnetic circuit double-rotor single-stator yoke-free high-torque-density permanent magnet motor - Google Patents
Penetrating radial magnetic circuit double-rotor single-stator yoke-free high-torque-density permanent magnet motor Download PDFInfo
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- CN108736676B CN108736676B CN201810709182.8A CN201810709182A CN108736676B CN 108736676 B CN108736676 B CN 108736676B CN 201810709182 A CN201810709182 A CN 201810709182A CN 108736676 B CN108736676 B CN 108736676B
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- stator
- fixing frame
- motor shaft
- frame
- rotating frame
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- 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
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a penetrating radial magnetic circuit double-rotor single-stator yoke-free high-torque-density permanent magnet motor, which comprises a motor shaft, wherein the motor shaft is a hollow shaft, and the left side and the right side of the motor shaft are respectively connected with a left bearing and a right bearing; the left bearing and the right bearing are respectively connected with a left rotating frame and a right rotating frame; a shell is connected between the left rotating frame and the right rotating frame; the motor shaft is connected with a stator assembly, and the stator assembly is positioned between the left bearing and the right bearing; the left rotating frame extends inwards to form an inner rotor fixing frame; the inner rotor fixing frame is connected with a plurality of inner rotor magnetic steels through an inner rotor magnetic yoke; the inner side of the shell is connected with a plurality of outer rotor magnetic steels through an outer rotor magnetic yoke; the motor has the advantages of simple structure, high torque density, high reliability and high controllability through the structural cooperation of the double rotors and the single stator; vibration and noise are reduced when the motor is operated.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a penetrating radial magnetic circuit double-rotor single-stator yoke-free high-torque-density permanent magnet motor.
Background
In recent years, permanent magnet motors are increasingly widely applied in the fields of economy, national defense and the like, and the technology thereof is also becoming mature. At present, a permanent magnet motor is generally required to have the advantages of high torque density, high linearity and high efficiency.
In terms of improving the torque density, the current common method is that a motor stator core is provided with a notch or adopts a straight tooth structure, namely, the tooth crown on the traditional stator punching sheet is reduced or removed, and the method has the advantages that the magnetic flux leakage of the notch can be obviously reduced, the saturation degree of a motor magnetic circuit is reduced, and meanwhile, the main magnetic flux of an armature reaction can be increased, so that the torque density of the motor can be greatly improved; however, the disadvantage of this structure is that the width of the slot opening of the motor stator is large, and a large eddy current loss is generated on the rotor permanent magnet, and for the wound stator core with concentrated windings, the large slot opening or the straight tooth structure lacks the position limitation of the crown to the coil conductor, and increases the manufacturing difficulty of the motor.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the penetrating radial magnetic circuit double-rotor single-stator yoke-free high-torque-density permanent magnet motor which is simple in structure, convenient to operate and practical.
The invention is realized by the following modes:
the utility model provides a penetrating radial magnetic circuit birotor single stator does not have yoke high torque density permanent magnet machine which characterized in that: the motor shaft is a hollow shaft, and the left side and the right side of the motor shaft are respectively connected with a left bearing and a right bearing; the left bearing and the right bearing are respectively connected with a left rotating frame and a right rotating frame; the left rotating frame and the right rotating frame are respectively rotatable relative to a motor shaft; a shell is connected between the left rotating frame and the right rotating frame; the motor shaft is connected with a stator assembly, and the stator assembly is positioned between the left bearing and the right bearing; the left rotating frame extends inwards to form an inner rotor fixing frame; the inner rotor fixing frame is connected with a plurality of inner rotor magnetic steels through an inner rotor magnetic yoke; the inner rotor magnetic steel is positioned at the inner side of the stator assembly; the inner side of the shell is connected with a plurality of outer rotor magnetic steels through an outer rotor magnetic yoke; the outer rotor magnetic steel is positioned at the outer side of the stator assembly;
the inner side of the left end of the motor shaft is connected with a rotary stator; the left rotating frame is connected with a rotary rotor matched with the discharge stator through a rotary fixing frame; the coil lead of the stator assembly is connected with an outgoing cable, the outgoing cable penetrates through the inside of the motor shaft and is combined with the outgoing line of the rotary transformer to form an output line, and the output line extends to the outer side from a sealing ring arranged at the right end of the motor shaft.
Further, the stator assembly comprises a stator fixing frame, and the stator fixing frame is arranged on a motor shaft; the left end of the stator fixing frame is connected with a stator core fixing frame, and a plurality of stator grooves for installing stator cores are formed in the stator core fixing frame; a stator core is arranged on the stator slot; a plurality of coil lead grooves are arranged on the stator fixing frame and are connected with corresponding stator grooves; a coil lead wire extends from the coil package and is arranged in the coil lead wire groove;
an inner cavity ring and an outer cavity ring are integrally formed in the stator fixing frame, and the inner cavity ring is communicated with a water inlet on the stator fixing frame; the outer cavity ring is communicated with a water outlet on the stator fixing frame; a plurality of water inlet through holes and a plurality of water outlet through holes are arranged in the stator core fixing frame at intervals, and each group of water channels consists of one water inlet through hole and one water outlet through hole; one end of the water inlet through hole is communicated with the inner cavity ring through the inner water channel; one end of the water outlet through hole is communicated with the outer cavity ring through the inner water channel; a cover plate is connected to the left side of the stator core fixing frame; the cover plate is provided with a plurality of water channel grooves at intervals, and the end parts of one water inlet through hole and one water outlet through hole correspond to one water channel groove, so that the water channel groove, the water inlet through hole, the water outlet through hole, the inner cavity ring and the outer cavity ring form a circulating cooling water channel.
Further, the water inlet and the water outlet are respectively connected with a water inlet pipe and a water outlet pipe on the motor shaft.
The invention has the beneficial effects that: the motor has the advantages of simple structure, high torque density, high reliability and high controllability through the structural cooperation of the double rotors and the single stator; vibration and noise are reduced when the motor is operated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of the structure of the present invention;
FIG. 3 is a schematic view of a stator mounting bracket according to the present invention;
FIG. 4 is a cross-sectional view of the stator mount structure of the present invention;
fig. 5 is a schematic view of the stator core structure of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Examples:
the penetrating radial magnetic circuit double-rotor single-stator yoke-free high-torque-density permanent magnet motor comprises a motor shaft 1, wherein the motor shaft 1 is a hollow shaft, and the left side and the right side of the motor shaft 1 are respectively connected with a left bearing 2 and a right bearing 3; the left bearing 2 and the right bearing 3 are respectively connected with a left rotating frame 4 and a right rotating frame 5; the left rotary frame 4 and the right rotary frame 5 are rotatable with respect to the motor shaft 1, respectively; a shell 6 is connected between the left rotating frame 4 and the right rotating frame 5; the motor shaft 1 is connected with a stator assembly 7, and the stator assembly 7 is positioned between the left bearing 2 and the right bearing 3; the left rotary frame 4 is formed with an inner rotor holder 41 extending inward; the inner rotor fixing frame 41 is connected with a plurality of inner rotor magnetic steels 43 through an inner rotor magnetic yoke 42; the inner rotor magnetic steel 43 is positioned on the inner side of the stator assembly 7; the inner side of the shell 6 is connected with a plurality of outer rotor magnetic steels 62 through an outer rotor magnetic yoke 61; the outer rotor magnetic steel 62 is positioned on the outer side of the stator assembly 7; the inner side of the left end of the motor shaft 1 is connected with a rotary stator 8; the left rotating frame 4 is connected with a rotary rotor 10 matched with the discharge stator 8 through a rotary fixing frame 9; the coil lead 11 of the stator assembly 7 is connected with an outgoing cable 12, the outgoing cable 12 penetrates through the motor shaft 1 and is combined with the outgoing line of the rotary transformer 8 to form an output line 13, and the output line 13 extends to the outer side from a sealing ring 14 arranged at the right end of the motor shaft 1.
In this embodiment, as shown in fig. 3, 4 and 5, the stator assembly 7 includes a stator fixing frame 72, and the stator fixing frame 72 is disposed on the motor shaft 1; the left end of the stator fixing frame 72 is connected with a stator core fixing frame 76, and a plurality of stator grooves 77 for installing the stator core 71 are arranged on the stator core fixing frame 76; stator slots 77 are provided with stator cores 71; a plurality of coil lead grooves 711 are arranged on the stator fixing frame 72, and the coil lead grooves 711 are connected with the corresponding stator grooves 77; a coil package 712 is wound on the stator core 71 through a plastic insulating sheath 713, a coil lead 11 extends from the coil package 712, and the coil lead 11 is arranged in the coil lead slot 711; an inner cavity ring 73 and an outer cavity ring 731 are integrally formed in the stator fixing frame 72, and the inner cavity ring 73 is communicated with a water inlet 74 on the stator fixing frame 72; the outer cavity ring 731 is in communication with the water outlet 75 on the stator mount 72; a plurality of water inlet through holes 78 and a plurality of water outlet through holes 781 are arranged in the stator core fixing frame 76 at intervals, and each group of water channels consists of one water inlet through hole 78 and one water outlet through hole 781; one end of the water inlet through hole 78 is communicated with the inner cavity ring 73 through the inner water channel 732; one end of the water outlet through hole 781 is communicated with the outer cavity ring 731 through the inner water channel 733; a cover plate 79 is connected to the left side of the stator core fixing frame 76; the cover plate 79 is provided with a plurality of water channel grooves 710 at intervals, and the ends of one water inlet through hole 78 and one water outlet through hole 781 correspond to one water channel groove 710, so that the water channel groove 710, the water inlet through hole 78, the water outlet through hole 781, the inner cavity ring 73 and the outer cavity ring 731 form a circulating cooling water channel.
During implementation, the left rotating frame 4 and the right rotating frame 5 are connected with a rotating device, such as a driving motor, the left rotating frame 4 and the right rotating frame 5 are driven to rotate through the rotating device, so that the inner rotor magnetic steel 43 and the outer rotor magnetic steel 62 are driven to rotate, the inner rotor magnetic steel 43 and the outer rotor magnetic steel 62 and a stator core 71 on the stator assembly 7 form a magnetic circuit in the rotating process, and power formed by the magnetic circuit is output through the output line 13.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. The utility model provides a penetrating radial magnetic circuit birotor single stator does not have yoke high torque density permanent magnet machine which characterized in that: the motor comprises a motor shaft (1), wherein the motor shaft (1) is a hollow shaft, and the left side and the right side of the motor shaft (1) are respectively connected with a left bearing (2) and a right bearing (3); the left bearing (2) and the right bearing (3) are respectively connected with a left rotating frame (4) and a right rotating frame (5); the left rotating frame (4) and the right rotating frame (5) are respectively rotatable relative to the motor shaft (1); a shell (6) is connected between the left rotating frame (4) and the right rotating frame (5); the motor shaft (1) is connected with a stator assembly (7), and the stator assembly (7) is positioned between the left bearing (2) and the right bearing (3); the left rotary frame (4) extends inwards to form an inner rotor fixing frame (41); the inner rotor fixing frame (41) is connected with a plurality of inner rotor magnetic steels (43) through an inner rotor magnetic yoke (42); the inner rotor magnetic steel (43) is positioned at the inner side of the stator assembly (7); the inner side of the shell (6) is connected with a plurality of outer rotor magnetic steels (62) through an outer rotor magnetic yoke (61); the outer rotor magnetic steel (62) is positioned at the outer side of the stator assembly (7);
the inner side of the left end of the motor shaft (1) is connected with a rotary stator (8); a rotary rotor (10) matched with the rotary stator (8) is connected to the left rotary frame (4) through a rotary fixing frame (9); the coil lead (11) of the stator assembly (7) is connected with an outgoing cable (12), the outgoing cable (12) penetrates through the motor shaft (1) and is converged with the outgoing line of the rotary transformer (8) to form an output line (13), and the output line (13) extends to the outer side from a sealing ring (14) arranged at the right end of the motor shaft (1);
the stator assembly (7) comprises a stator fixing frame (72), and the stator fixing frame (72) is arranged on the motor shaft (1); the left end of the stator fixing frame (72) is connected with a stator core fixing frame (76), and a plurality of stator grooves (77) for installing a stator core (71) are formed in the stator core fixing frame (76); a stator core (71) is arranged on the stator slot (77); a plurality of coil lead grooves (711) are formed in the stator fixing frame (72), and the coil lead grooves (711) are connected with corresponding stator grooves (77); a coil lead (11) is extended from the coil package (712) through a plastic insulating sheath (713), and the coil lead (11) is arranged in a coil lead groove (711);
an inner cavity ring (73) and an outer cavity ring (731) are integrally formed in the stator fixing frame (72), and the inner cavity ring (73) is communicated with a water inlet (74) on the stator fixing frame (72); the outer cavity ring (731) is communicated with a water outlet (75) on the stator fixing frame (72); a plurality of water inlet through holes (78) and a plurality of water outlet through holes (781) are arranged in the stator core fixing frame (76) at intervals, and each group of water channels consists of one water inlet through hole (78) and one water outlet through hole (781); one end of the water inlet through hole (78) is communicated with the inner cavity ring (73) through the inner water channel (732); one end of the water outlet through hole (781) is communicated with the outer cavity ring (731) through the inner water channel (733); a cover plate (79) is connected to the left side of the stator core fixing frame (76); a plurality of water channel grooves (710) are formed in the cover plate (79) at intervals, and the end parts of one water inlet through hole (78) and one water outlet through hole (781) correspond to the water channel groove (710), so that the water channel groove (710), the water inlet through hole (78), the water outlet through hole (781), the inner cavity ring (73) and the outer cavity ring (731) form a circulating cooling water channel;
the left rotating frame (4) and the right rotating frame (5) are connected with a rotating device, the left rotating frame (4) and the right rotating frame (5) are driven to rotate through the rotating device, then the inner rotor magnetic steel (43) and the outer rotor magnetic steel (62) are driven to rotate, the inner rotor magnetic steel (43) and the outer rotor magnetic steel (62) form a magnetic circuit with a stator core (71) on a stator assembly (7) in the rotating process, and power formed by the magnetic circuit is output through an output line (13).
2. The penetrating radial magnetic circuit dual rotor single stator yoke-less high torque density permanent magnet machine of claim 1, wherein: the water inlet (74) and the water outlet (75) are respectively connected with the upper water inlet pipe (15) and the upper water outlet pipe (16) of the motor shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810709182.8A CN108736676B (en) | 2018-07-02 | 2018-07-02 | Penetrating radial magnetic circuit double-rotor single-stator yoke-free high-torque-density permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810709182.8A CN108736676B (en) | 2018-07-02 | 2018-07-02 | Penetrating radial magnetic circuit double-rotor single-stator yoke-free high-torque-density permanent magnet motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108736676A CN108736676A (en) | 2018-11-02 |
| CN108736676B true CN108736676B (en) | 2023-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810709182.8A Active CN108736676B (en) | 2018-07-02 | 2018-07-02 | Penetrating radial magnetic circuit double-rotor single-stator yoke-free high-torque-density permanent magnet motor |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109560627B (en) * | 2018-12-15 | 2024-04-09 | 宁德时代电机科技有限公司 | Flat copper wire formed stator coil high reluctance torque outer rotor type permanent magnet driving motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB242033A (en) * | 1924-09-17 | 1925-11-05 | John Johnston | Improvements in rotary compressors and exhausters |
| CN201349167Y (en) * | 2008-10-09 | 2009-11-18 | 广东工业大学 | Composite excitation brushless motor for driving electric car |
| CN204615534U (en) * | 2015-04-20 | 2015-09-02 | 上海融德机电工程设备有限公司 | For the water-cooling structure of magnetic coupling |
| CN105720712A (en) * | 2016-04-19 | 2016-06-29 | 北京康城科技有限公司 | Disk-type hub motor adopting stator liquid cooling and having rotor magnetic steel being embedded |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004104986A (en) * | 2002-07-16 | 2004-04-02 | Japan Servo Co Ltd | Permanent magnet type rotary electric machine |
| KR100908396B1 (en) * | 2007-04-23 | 2009-07-20 | 주식회사 아모텍 | XLD motor stator, XLD motor with double rotor / single stator structure and automotive cooling device using same |
-
2018
- 2018-07-02 CN CN201810709182.8A patent/CN108736676B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB242033A (en) * | 1924-09-17 | 1925-11-05 | John Johnston | Improvements in rotary compressors and exhausters |
| CN201349167Y (en) * | 2008-10-09 | 2009-11-18 | 广东工业大学 | Composite excitation brushless motor for driving electric car |
| CN204615534U (en) * | 2015-04-20 | 2015-09-02 | 上海融德机电工程设备有限公司 | For the water-cooling structure of magnetic coupling |
| CN105720712A (en) * | 2016-04-19 | 2016-06-29 | 北京康城科技有限公司 | Disk-type hub motor adopting stator liquid cooling and having rotor magnetic steel being embedded |
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| Publication number | Publication date |
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| CN108736676A (en) | 2018-11-02 |
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