CN112087113A - Rare earth permanent magnet synchronous motor based on signal inverse transmission - Google Patents
Rare earth permanent magnet synchronous motor based on signal inverse transmission Download PDFInfo
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- CN112087113A CN112087113A CN202010964725.8A CN202010964725A CN112087113A CN 112087113 A CN112087113 A CN 112087113A CN 202010964725 A CN202010964725 A CN 202010964725A CN 112087113 A CN112087113 A CN 112087113A
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- rotor
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- rare earth
- cooling
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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
- H02K16/04—Machines with one rotor and two stators
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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
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
-
- 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
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
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- 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)
- Motor Or Generator Cooling System (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention relates to a rare earth permanent magnet synchronous motor based on signal inverse transmission, which comprises: a housing, a stator and a rotor; the inner wall of the shell is provided with a plurality of stators, a gap is arranged between every two adjacent stators, the stators are made of liquid metal, and the inner side of the gap is provided with a magnetism isolating ring; the rotor is arranged on the inner side of the shell along the axis direction, the rotor is fixed on the central shaft, the central shaft is movably connected to the axis direction of the shell and can rotate, a plurality of grooves are formed in the outer wall of the rotor along the circumferential direction, permanent magnets are arranged in the grooves, and the grooves are parallel to the rotation center of the rotor; the air gap is arranged between the stator and the rotor, a plurality of cooling air holes are arranged on the rotor in a penetrating mode, the cooling mechanism is arranged inside the rotor, the rotor and the air gap can be cooled through cooling, and the shape of the stator can be changed according to the temperature of the rotor.
Description
Technical Field
The invention relates to the field of motors, in particular to a rare earth permanent magnet synchronous motor based on signal reverse transmission.
Background
The rare earth permanent magnet synchronous motor has starting torque and overload capacity higher than that of three-phase asynchronous motor by one power level, the ratio of maximum starting torque to rated torque can reach 3.6 times, while the normal asynchronous motor is only 1.6 times, the rare earth permanent magnet synchronous motor has no slip, the rotor has no fundamental iron and copper consumption, the rare earth permanent magnet synchronous motor is double-side excited, mainly the rotor is excited by permanent magnet, and the power factor can reach or approach 1.0. The improvement of the power factor saves reactive power on one hand, and on the other hand, the stator current is also reduced, the stator copper consumption is reduced, the efficiency is improved, the pole arc coefficient of the rare earth permanent magnet synchronous motor is generally larger than that of an asynchronous motor, and when the power supply voltage and the stator structure are fixed, the average magnetic induction intensity of the rare earth permanent magnet synchronous motor is smaller than that of the asynchronous motor, and the iron loss is small.
The rare earth permanent magnet synchronous motor has small constant loss (iron loss and mechanical loss), the variable loss (stator copper loss) changes slower than the variable loss (stator copper loss and rotor copper loss) of the asynchronous motor, so that the efficiency characteristic of the rare earth permanent magnet synchronous motor has the characteristic of high and flat efficiency, the rare earth permanent magnet synchronous motor has the highest efficiency in a quite wide area under light load, the rated efficiency of the rare earth permanent magnet synchronous motor is 4% -7% higher than that of the asynchronous motor, but the average efficiency in the whole load change range can be 12% higher than that of a three-phase asynchronous motor, and the reactive power saving rate can reach 85% by adopting the rare earth permanent magnet synchronous motor; the power saving rate of active power can reach 23-25%, the power saving effect is very obvious,
The existing rare earth permanent magnet synchronous motor can not flexibly switch a stator from a plane, a concave curved surface or a convex curved surface along with the rise of temperature in the rotating process of a rotor, can not control the temperature of the rotor and an air gap through a cooling mechanism, and controls the temperature of the rotor within a preset range so as to control the shape of the stator to change according to a preset shape.
Disclosure of Invention
The invention overcomes the defects of the prior art, and provides a rare earth permanent magnet synchronous motor based on signal reverse transmission, which comprises: a housing, a stator and a rotor; it is characterized in that the preparation method is characterized in that,
the inner wall of the shell is provided with a plurality of stators, a gap is arranged between every two adjacent stators, the stators are made of liquid metal, and the inner side of the gap is provided with a magnetism isolating ring;
the rotor is arranged on the inner side of the shell along the axis direction, the rotor is fixed on the central shaft, the central shaft is movably connected to the axis direction of the shell and can rotate, a plurality of grooves are formed in the outer wall of the rotor along the circumferential direction, permanent magnets are arranged in the grooves, and the grooves are parallel to the rotation center of the rotor;
the air gap is arranged between the stator and the rotor, a plurality of cooling air holes are arranged on the rotor in a penetrating mode, the cooling mechanism is arranged inside the rotor, the rotor and the air gap can be cooled through cooling, and the shape of the stator can be changed according to the temperature of the rotor.
In a preferred embodiment of the present invention, the groove is disposed perpendicular to a radial direction of the rotor.
In a preferred embodiment of the present invention, the sizes of the plurality of cooling air holes may be the same or different.
In a preferred embodiment of the present invention, a cooling ring is disposed inside the air gap, a plurality of cooling channels are disposed inside the cooling ring, and the plurality of cooling channels intersect and converge to a center in a divergent structure.
In a preferred embodiment of the present invention, the cooling oil or condensate can be injected into the cooling channel.
In a preferred embodiment of the present invention, the permanent magnet can be a rare earth permanent magnet, and a magnetic isolation plate is disposed between a plurality of the rare earth permanent magnets.
In a preferred embodiment of the present invention, the non-two or more pairs of permanent magnets comprise an even number of permanent magnets having two pairs of poles.
In a preferred embodiment of the present invention, the permanent magnet can be a rectangular parallelepiped, and the permanent magnet is a neodymium iron boron permanent magnet.
In a preferred embodiment of the invention, the stator has a smaller dimension at the end close to the rotor than at the end far from the rotor.
In a preferred embodiment of the present invention, one end of the stator near the rotor can be changed from a plane to a concave curved surface or a convex curved surface.
The invention solves the defects in the background technology, and has the following beneficial effects:
(1) through set up the cooling hole at the rotor outer wall and carry out the aeration cooling, can improve the heat dispersion of motor, reduce the temperature of rotor at rotatory in-process, reduce the weight of rotor simultaneously, can prevent the demagnetization phenomenon of permanent magnet when the high temperature, increase the stability of motor.
(2) An air gap is formed between the rotor and the stator, so that the rotor can be prevented from expanding due to temperature rise in the rotating process of the rotor, friction between the rotor and the stator can be prevented, and the running safety of the motor can be improved.
(3) Be provided with the cooling ring in the air gap, be provided with divergent formula cooling channel in the cooling ring, let in cooling oil or condensate in cooling channel, can realize high-efficient water-cooling, cooperate with the rotor air-cooling, improve cooling efficiency.
(4) The stator is liquid metal, and in the rotor rotation process, the stator can be flexibly switched among a plane, a concave curved surface or a convex curved surface along with the rise of temperature, and the rotor and the air gap can be subjected to temperature control through the cooling mechanism, so that the temperature of the rotor is controlled within a preset range, the shape of the stator is controlled to be changed according to a preset shape, and the running power of the synchronous motor is maximally improved under different running states of the motor.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic partial perspective view of a preferred embodiment of the present invention;
FIG. 2 is a schematic view of the internal structure of the housing of the preferred embodiment of the present invention;
FIG. 3 is a schematic view of a stator structure of another embodiment of the present invention;
in the figure:
1. the magnetic-field-isolating-type cooling device comprises a shell, 2 parts of a fixing bolt hole, 3 parts of a rotor, 4 parts of a central shaft, 5 parts of a stator, 6 parts of a magnetic isolating ring, 7 parts of an air gap, 8 parts of a groove, 9 parts of a cooling air hole, 10 parts of a concave curved surface.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description, wherein the drawings are simplified schematic drawings and only the basic structure of the present invention is illustrated schematically, so that only the structure related to the present invention is shown, and it is to be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The invention will now be described in further detail with reference to the accompanying drawings and examples, which are simplified schematic drawings and illustrate only the basic structure of the invention in a schematic manner, and thus show only the constituents relevant to the invention.
As shown in fig. 1-2, the invention discloses a schematic view of a local three-dimensional structure of a rare earth permanent magnet synchronous motor;
a rare earth permanent magnet synchronous motor based on signal reverse transmission comprises: a housing 1, a stator 5 and a rotor 3;
the inner wall of the shell 1 is provided with a plurality of stators 5, a gap is arranged between every two adjacent stators 5, the stators 5 are liquid metal, and the inner side of the gap is provided with a magnetism isolating ring 6;
the rotor 3 is arranged on the inner side of the shell 1 along the axis direction, the rotor 3 is fixed on the central shaft 4, the central shaft 4 is movably connected to the axis direction of the shell 1, the central shaft 4 can rotate, a plurality of grooves 8 are formed in the outer wall of the rotor 3 along the circumferential direction, permanent magnets are arranged in the grooves 8, and the grooves 8 are parallel to the rotation center of the rotor 3;
an air gap 7 is arranged between the stator 5 and the rotor 3, a plurality of cooling air holes 9 are arranged on the rotor 3 in a penetrating mode, a cooling mechanism is arranged inside the rotor 3, the rotor 3 and the air gap 7 can be cooled through cooling, and the shape of the stator 5 can be changed according to the temperature of the rotor 3.
It should be noted that the magnetism isolating ring 6 can prevent the magnetic field from leaking, 4 fixing bolt holes 2 are arranged at one end of the shell 1, the bolt fixes the motor through the fixing bolt holes 2, the cooling holes are arranged on the outer wall of the rotor 3 for ventilation cooling, the heat dissipation performance of the motor can be improved, the temperature of the rotor 3 in the rotating process can be reduced, meanwhile, the weight of the rotor 3 is reduced, an air gap 7 is arranged between the rotor and the stator 5, the expansion of the rotor 3 caused by the temperature rise in the rotating process of the rotor 3 can be prevented, the friction between the rotor 3 and the stator 5 caused by the temperature rise in the rotating process of the rotor 3 can be prevented, and the safety of the motor operation is.
According to an embodiment of the invention, the grooves 8 are arranged radially perpendicular to the rotor 3.
It should be noted that, by arranging the grooves 8 parallel to the rotation center of the rotor 3 and perpendicular to the radial direction of the rotor 3, such permanent magnet arrangement can obtain the optimal magnetic field distribution, which is beneficial to improving the operation efficiency of the motor.
According to an embodiment of the invention, the several cooling air holes 9 can be the same or different in size.
It should be noted that the sizes of the plurality of cooling air holes 9 are distributed in a gradient manner along the length direction of the rotor 3.
According to the embodiment of the invention, the cooling ring is arranged in the air gap 7, the plurality of cooling channels are arranged in the cooling ring, and the plurality of cooling channels are intersected and converged to the center to form a divergent structure.
It should be noted that a cooling ring is arranged in the air gap 7, a divergent cooling channel is arranged in the cooling ring, and cooling oil or condensate is introduced into the cooling channel, so that efficient water cooling can be realized, and the cooling efficiency is improved by matching with air cooling of the rotor 3.
According to the embodiment of the invention, cooling oil or condensate can be flushed into the cooling channel.
According to the embodiment of the invention, the permanent magnet can be a rare earth permanent magnet, and a magnetic isolation plate is arranged among a plurality of rare earth permanent magnets.
The magnetic isolation plate can isolate magnetic interference between adjacent permanent magnets to prevent magnetic field disorder.
According to the embodiment of the invention, the permanent magnet is an even number of permanent magnets with more than two pairs of poles and including two pairs of poles.
It should be noted that the permanent magnet can be two pairs of poles, four pairs of poles or six pairs of poles, but is not limited to these arrangements, and those skilled in the art can make routine adjustments according to actual use.
According to the embodiment of the invention, the permanent magnet can be in a cuboid structure, and the permanent magnet is a neodymium iron boron permanent magnet.
The neodymium iron boron permanent magnet is divided into sintered neodymium iron boron and bonded neodymium iron boron, and the bonded neodymium iron boron is magnetic in all directions and is corrosion-resistant; the sintered neodymium iron boron is easy to corrode, and the surface of the sintered neodymium iron boron needs to be plated with zinc, nickel, environment-friendly zinc, environment-friendly nickel, nickel copper nickel, environment-friendly nickel copper nickel and the like. The sintered neodymium iron boron is generally divided into axial magnetization and radial magnetization according to a required working surface, and the cuboid permanent magnet shape can enable the motor to obtain a high permanent magnet utilization rate and improve the motor efficiency.
According to an embodiment of the invention, the stator 5 has a smaller dimension near the end of the rotor 3 than at the end remote from the rotor 3.
Note that the stator 5 has a boss structure.
As shown in fig. 3, the invention discloses a stator structure diagram of another embodiment;
according to the embodiment of the invention, one end of the stator 5 close to the rotor 3 can be changed from a plane to a concave curved surface 10 or a convex curved surface.
It should be noted that, in the process of cooling the rotor 3 by the cooling mechanism, the rotor 3 is cooled to a certain temperature and then is stopped to be cooled, so as to realize temperature control of the rotor 3, when the rotor 3 is cooled, the air in the air gap 7 also changes temperature, so that the temperature of the end part of the stator 5 changes, the stator 5 is liquid metal, in the process of temperature change, the shape of the end face can be changed, so as to effectively control the effective cutting magnetic field area in the rotation process of the rotor 3, and more accurately control the power of the permanent magnet synchronous motor, in the rotation process of the rotor 3, the stator 5 can be flexibly switched from a plane, a concave curved surface 10 or a convex curved surface along with the rise of the temperature, and the cooling mechanism can control the temperature of the rotor 3 and the air gap 7, so as to control the shape of the stator 5 to change according to a preset shape, the running power of the synchronous motor is improved to the maximum extent under different running states of the motor.
To sum up, through set up the cooling hole at rotor 3 outer wall and carry out the ventilation cooling, can improve the heat dispersion of motor, reduce rotor 3 at the temperature of rotation in-process, reduce rotor 3's weight simultaneously, can prevent the demagnetization phenomenon of permanent magnet when the high temperature, increase the stability of motor.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A rare earth permanent magnet synchronous motor based on signal reverse transmission comprises: a housing, a stator and a rotor; it is characterized in that the preparation method is characterized in that,
the inner wall of the shell is provided with a plurality of stators, a gap is arranged between every two adjacent stators, the stators are made of liquid metal, and the inner side of the gap is provided with a magnetism isolating ring;
the rotor is arranged on the inner side of the shell along the axis direction, the rotor is fixed on the central shaft, the central shaft is movably connected to the axis direction of the shell and can rotate, a plurality of grooves are formed in the outer wall of the rotor along the circumferential direction, permanent magnets are arranged in the grooves, and the grooves are parallel to the rotation center of the rotor;
the air gap is arranged between the stator and the rotor, a plurality of cooling air holes are arranged on the rotor in a penetrating mode, the cooling mechanism is arranged inside the rotor, the rotor and the air gap can be cooled through cooling, and the shape of the stator can be changed according to the temperature of the rotor.
2. The rare earth permanent magnet synchronous motor based on signal reverse transmission according to claim 1, characterized in that: the groove is perpendicular to the radial direction of the rotor.
3. The rare earth permanent magnet synchronous motor based on signal reverse transmission according to claim 1, characterized in that: the plurality of cooling air holes can be the same or different in size.
4. The rare earth permanent magnet synchronous motor based on signal reverse transmission according to claim 1, characterized in that: and a cooling ring is arranged in the air gap, a plurality of cooling channels are arranged in the cooling ring, and the plurality of cooling channels are intersected and converged to the center to form a divergent structure.
5. The rare earth permanent magnet synchronous motor based on signal reverse transmission according to claim 4, characterized in that: the cooling channel can be internally flushed with cooling oil or condensate.
6. The rare earth permanent magnet synchronous motor based on signal reverse transmission according to claim 5, characterized in that: the permanent magnets can be rare earth permanent magnets, and magnetic isolation plates are arranged among the rare earth permanent magnets.
7. The rare earth permanent magnet synchronous motor based on signal reverse transmission according to claim 1, characterized in that: the non-bipolarity of the permanent magnet comprises an even number of permanent magnets with two pairs of poles.
8. The rare earth permanent magnet synchronous motor based on signal reverse transmission according to claim 1, characterized in that: the permanent magnet shape can be the cuboid structure, just the permanent magnet is neodymium iron boron permanent magnet.
9. The rare earth permanent magnet synchronous motor based on signal reverse transmission according to claim 7, characterized in that: the size of the stator close to one end of the rotor is smaller than that of the stator far away from one end of the rotor.
10. The rare earth permanent magnet synchronous motor based on signal reverse transmission according to claim 1, characterized in that: one end of the stator close to the rotor can be converted from a plane to a concave curved surface or a convex curved surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010964725.8A CN112087113B (en) | 2020-09-15 | 2020-09-15 | Rare earth permanent magnet synchronous motor based on signal inverse transmission |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010964725.8A CN112087113B (en) | 2020-09-15 | 2020-09-15 | Rare earth permanent magnet synchronous motor based on signal inverse transmission |
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| CN112087113A true CN112087113A (en) | 2020-12-15 |
| CN112087113B CN112087113B (en) | 2022-05-20 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05122904A (en) * | 1991-10-24 | 1993-05-18 | Fuji Electric Co Ltd | Cooling apparatus of valve turbine generator |
| JPH07231611A (en) * | 1994-02-21 | 1995-08-29 | Toyota Motor Corp | Cooling structure of rotating machine |
| CN102013778A (en) * | 2010-12-13 | 2011-04-13 | 哈尔滨工业大学 | Permanent magnet synchronous motor with wide field-weakening and speed regulation range |
| CN108199507A (en) * | 2018-03-28 | 2018-06-22 | 郑州轻工业学院 | A kind of Modular motor stator structure |
| CN111509914A (en) * | 2019-01-31 | 2020-08-07 | 马斌严 | External rotation type motor structure |
-
2020
- 2020-09-15 CN CN202010964725.8A patent/CN112087113B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05122904A (en) * | 1991-10-24 | 1993-05-18 | Fuji Electric Co Ltd | Cooling apparatus of valve turbine generator |
| JPH07231611A (en) * | 1994-02-21 | 1995-08-29 | Toyota Motor Corp | Cooling structure of rotating machine |
| CN102013778A (en) * | 2010-12-13 | 2011-04-13 | 哈尔滨工业大学 | Permanent magnet synchronous motor with wide field-weakening and speed regulation range |
| CN108199507A (en) * | 2018-03-28 | 2018-06-22 | 郑州轻工业学院 | A kind of Modular motor stator structure |
| CN111509914A (en) * | 2019-01-31 | 2020-08-07 | 马斌严 | External rotation type motor structure |
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| CN112087113B (en) | 2022-05-20 |
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Effective date of registration: 20220629 Address after: 410000 room D-113, East Building, engineering incubation building, Hunan University Science Park, 186 Guyuan Road, Changsha high tech Development Zone, Changsha, Hunan Province Patentee after: Hunan Pudong Technology Co.,Ltd. Address before: 526000 room 8, unit C, maker business center, Zhanqian Avenue, Guicheng, Dinghu District, Zhaoqing City, Guangdong Province Patentee before: Huayuchang (Zhaoqing) Intelligent Technology Research Co.,Ltd. Patentee before: Shenzhen Hong Kong industry university research (Zhaoqing) Electronic Technology Co., Ltd |