CN117997062A - Dual-rotor motor sharing stator and method - Google Patents
Dual-rotor motor sharing stator and method Download PDFInfo
- Publication number
- CN117997062A CN117997062A CN202410157468.5A CN202410157468A CN117997062A CN 117997062 A CN117997062 A CN 117997062A CN 202410157468 A CN202410157468 A CN 202410157468A CN 117997062 A CN117997062 A CN 117997062A
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- China
- Prior art keywords
- stator
- rotor
- sharing
- rotating shaft
- rotor structure
- 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
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000000926 separation method Methods 0.000 claims description 8
- 230000009977 dual effect Effects 0.000 claims 9
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004804 winding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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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
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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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/187—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to inner stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/02—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
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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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention discloses a double-rotor motor with a shared stator and a method thereof, wherein the double-rotor motor comprises the shared stator (1), an inner rotor structure (2) is arranged in the shared stator (1), an outer rotor structure (3) is arranged outside the shared stator (1), and a rotor flange (4) is fixed at the outer end part of the outer rotor structure (3); a rotating shaft (5) is arranged in the inner rotor structure (2). The invention is composed of a shared stator, an inner rotor structure arranged on the inner side of the shared stator and an outer rotor shell structure arranged on the outer side of the shared stator, the shared stator is fixedly connected with the outer rotor shell structure through a rotor flange, and the shared stator is matched with the inner rotor structure through a rotating shaft to form a double-rotor motor structure, so that two loads can be driven simultaneously, and the double-rotor motor structure has the same effect as the two motors respectively drive the two loads.
Description
Technical Field
The invention relates to a double-motor structure, in particular to a double-rotor motor sharing a stator and a method.
Background
Conventional motors typically have only one stator and one rotor, either direct current, synchronous or asynchronous machines, with only one mechanical port. However, with the development of technology and the diversification of use scenes, a dual-motor structure starts to appear on the market. At present, the traditional double motors are generally formed by simply combining two motors together to form a motor with a double-head mechanical shaft, and the two motors are independently driven to realize independent transmission of energy of the two mechanical shafts; the motor has the advantages of larger volume, larger occupied space, complex overall structure and higher production cost. Therefore, the prior art has the problems of larger volume, more complex structure and higher production cost.
Disclosure of Invention
The invention aims to provide a double-rotor motor sharing a stator and a method. The invention has the characteristics of effectively simplifying the structure, reducing the volume and reducing the production cost.
The technical scheme of the invention is as follows: the double-rotor motor with the shared stator comprises the shared stator, wherein an inner rotor structure is arranged in the shared stator, an outer rotor structure is arranged outside the shared stator, and a rotor flange is fixed at the outer end part of the outer rotor structure; the rotary shaft is further included, and one end of the rotary shaft is used as a driving end to be connected with the inner rotor structure or the outer rotor structure.
In the foregoing dual-rotor motor with a common stator, the other end of the rotating shaft is used as a supporting end to penetrate through the outer rotor structure or the inner rotor structure.
In the foregoing dual-rotor motor sharing a stator, a first bearing is disposed between the rotor flange and the rotating shaft.
In the foregoing dual-rotor motor with a common stator, a stator housing is further disposed on the common stator.
In the foregoing dual-rotor motor sharing a stator, a second bearing is disposed between the inside of the stator housing and the rotating shaft.
In the foregoing dual-rotor motor sharing a stator, an end cover is further disposed on an outer side of the inner rotor structure, and a third bearing is disposed between the end cover and the rotating shaft.
In the foregoing dual-rotor motor with a common stator, the common stator includes an inner stator core and an outer stator core which are concentrically distributed, a connection portion is disposed between the inner stator core and the outer stator core, and a set of separation cavities are disposed on the connection portion.
In the foregoing dual-rotor motor sharing a stator, the separation cavity is located between the inner stator core and the outer stator core that are adjacent to each other inside and outside.
In the foregoing dual-rotor motor with a common stator, the outer rotor structure includes an outer rotor housing, and a magnet matched with the common stator is disposed in an inner cavity of the outer rotor housing.
A control method of a double-rotor motor with a shared stator realizes independent control of driving of an inner rotor structure and an outer rotor structure by independently controlling magnetic circuits at the inner side and the outer side of the shared stator, and further realizes independent control of loads on a rotor flange and a rotating shaft.
Compared with the prior art, the double-rotor motor structure comprises the shared stator, the inner rotor structure arranged on the inner side of the shared stator, the outer rotor structure arranged on the outer side of the shared stator and the rotating shaft, so that the double-rotor motor structure can drive two loads simultaneously, the effect of driving the two loads respectively is the same as that of driving the two motors respectively (namely, the effect of controlling the two loads by 2 independent motors can be realized by two inner and outer rotors of one motor), and each load can be independently controlled (both motors can be independently controlled when working simultaneously and can be independently operated in forward and reverse directions). Meanwhile, the application adopts the shared stator, the inner stator core and the outer stator core are integrated together, the independent control of the inner rotor and the outer rotor can be realized by controlling the magnetic circuits on the inner side and the outer side of the shared stator, the axial space of the double-rotor motor is greatly compressed, and the motor can be thinned (the thickness can be reduced by 50 percent, and the cost can be reduced by 1/3). In addition, the inner stator core and the outer stator core are connected through a plurality of fulcrums, and the rest parts are disconnected, so that the magnetic circuit interference can be effectively cut off. The application has simple integral structure and small and compact volume, can effectively improve the space utilization rate and reduce the cost. In summary, the application has the characteristics of effectively simplifying the structure, reducing the volume and reducing the production cost.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a structural view of a common stator;
FIG. 3 is a perspective view of the present invention;
Fig. 4 is an exploded view of the present invention.
The marks in the drawings are: the stator comprises a 1-shared stator, a 2-inner rotor structure, a 3-outer rotor structure, a 4-rotor flange, a 5-rotating shaft, a 6-stator shell, a 7-first bearing, an 8-second bearing, a 9-end cover, a 10-third bearing, a 101-inner stator core, a 102-outer stator core, a 103-connecting part, a 104-separation cavity, a 301-outer rotor shell and a 302-magnet.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not intended to be limiting.
Example 1. The double-rotor motor with the shared stator comprises the shared stator 1, wherein an inner rotor structure 2 is arranged in the shared stator 1, and an outer rotor structure 3 is arranged outside the shared stator 1; the motor also comprises a rotating shaft 5, wherein one end of the rotating shaft 5 is used as a driving end to be connected with the inner rotor structure 2 or the outer rotor structure 3.
The other end of the rotating shaft 5 is used as a supporting end to penetrate through the outer rotor structure 3 or the inner rotor structure 2.
The common stator 1 comprises an inner stator core 101 and an outer stator core 102 which are distributed in concentric circles, a connecting part 103 is arranged between the inner stator core 101 and the outer stator core 102, and a group of separation cavities 104 are arranged on the connecting part 103.
The inner stator core and the outer stator core are respectively provided with an inner stator framework and an outer stator framework, and winding groups are respectively arranged on the inner stator framework and the outer stator framework.
Example 2. The double-rotor motor with the shared stator is shown in figures 1-4, and comprises a shared stator 1, wherein an inner rotor structure 2 is arranged on the inner side of the shared stator 1, an outer rotor structure 3 is arranged on the outer side of the shared stator 1, and a rotor flange 4 is fixed at the outer end part of the outer rotor structure 3; a rotating shaft 5 is arranged in the middle of the inner rotor structure 2, and one end of the rotating shaft 5 is connected with the rotor flange 4 through a first bearing 7; the common stator 1 is also provided with a stator housing 6.
The outer end of the stator shell is also provided with a connecting rib which can be used for fixing a supporting shaft of a load.
A second bearing 8 is arranged between the stator housing 6 and the rotating shaft 5.
An end cover 9 is further arranged on the outer side of the inner rotor structure 2, and a third bearing 10 is arranged between the end cover 9 and the rotating shaft 5.
The common stator 1 comprises an inner stator core 101 and an outer stator core 102 which are distributed in concentric circles, a connecting part 103 is arranged between the inner stator core 101 and the outer stator core 102, and a separation cavity 104 is arranged on the connecting part 103. And the separation cavity is located between the inner stator core 101 and the outer stator core 102 adjacent to each other inside and outside.
The inner stator core and the outer stator core are respectively provided with an inner stator framework and an outer stator framework, and winding groups are respectively arranged on the inner stator framework and the outer stator framework.
The outer rotor structure 3 comprises an outer rotor shell 301, and magnets 302 matched with the shared stator 1 are arranged at the inner side end of the outer rotor shell 301.
The outer rotor shell comprises a shell, and an annular groove is formed in the inner wall surface of a through hole of the shell; the inner end of the outer surface of the rotor flange is provided with an annular fixing disc which are matched with each other, so that the rotor flange can be installed and fixed.
A control method of a double-rotor motor sharing a stator is characterized in that an inner rotor structure end and a rotor flange of a rotating shaft are respectively connected with an external load; independent control of rotation driving of the inner rotor structure and the outer rotor shell structure is achieved through independent control of magnetic circuits on the inner side and the outer side of the shared stator, and further independent control of loads on the rotor flange and the rotating shaft is achieved.
When the inner rotor structure and the outer rotor shell structure work simultaneously, the inner rotor structure and the outer rotor shell structure can independently operate in forward and reverse directions.
The rotor flange and the inner rotor structure end of the rotating shaft can be connected with loads, the purpose that one motor drives two loads is achieved, and the two loads can be controlled independently.
The specific use process of the application comprises the following steps: the external control mechanism controls the inner side and the outer side of the shared stator to independently generate magnetic field magnetic circuits, the magnetic circuits on the outer side are matched with magnets on the outer rotor shell structure to drive the outer rotor shell to rotate, and the rotation of the outer rotor structure drives the rotor flange to rotate so as to drive the load connected with the rotor flange to act; the rotor flange rotates and only rotates around the first bearing, and does not drive the rotation of the rotating shaft. The rotation of the shaft is achieved by the rotation of an inner rotor structure driven by a magnetic circuit generated inside a common stator.
The invention is composed of a shared stator, an inner rotor structure arranged on the inner side of the shared stator, an outer rotor structure arranged on the outer side of the shared stator and a rotating shaft, wherein the shared stator, the inner rotor structure and the rotating shaft are fixedly connected with the outer rotor structure through a rotor flange, the rotating shaft is matched with the inner rotor structure (the rotating shaft is connected with the inner rotor), a double-rotor motor structure is formed, two loads can be driven simultaneously, the effect of driving the two loads respectively is the same as that of driving the two motors (namely, the effect of controlling the two loads by 2 independent motors can be realized by two inner and outer rotors of one motor), and each load can be independently controlled (both motors can be independently controlled when working simultaneously and can be independently operated in forward and backward directions).
Further, a belt pulley can be arranged on the rotor flange and is connected with a reduction gear of the load through the belt pulley and the belt, the belt pulley rotates to drive the belt to act, the belt drives the reduction gear connected with the belt to rotate, and the reduction gear rotates to drive the load connected with the reduction gear to act.
Claims (10)
1. A dual rotor motor sharing a stator, characterized by: the motor comprises a shared stator (1), wherein an inner rotor structure (2) is arranged in the shared stator (1), and an outer rotor structure (3) is arranged outside the shared stator (1); the motor also comprises a rotating shaft (5), wherein one end of the rotating shaft (5) is used as a driving end to be connected with the inner rotor structure (2) or the outer rotor structure (3).
2. A dual rotor electric machine for sharing a stator as claimed in claim 1, wherein: the other end of the rotating shaft (5) is used as a supporting end to penetrate through the outer rotor structure (3) or the inner rotor structure (2).
3. A dual rotor electric machine for sharing a stator as claimed in claim 1, wherein: the outer rotor structure (3) outer end is equipped with rotor flange (4), is equipped with first bearing (7) between rotor flange (4) and pivot (5).
4. A dual rotor electric machine for sharing a stator as claimed in claim 1, wherein: the common stator (1) is also provided with a stator housing (6).
5. A dual rotor electric machine for sharing a stator as claimed in claim 4, wherein: a second bearing (8) is arranged between the inside of the stator shell (6) and the rotating shaft (5).
6. A dual rotor electric machine for sharing a stator as claimed in claim 1, wherein: an end cover (9) is further arranged on the outer side of the inner rotor structure (2), and a third bearing (10) is arranged between the end cover (9) and the rotating shaft (5).
7. A dual rotor electric machine for sharing a stator as claimed in claim 1, wherein: the common stator (1) comprises an inner stator core (101) and an outer stator core (102) which are distributed in concentric circles, a connecting part (103) is arranged between the inner stator core (101) and the outer stator core (102), and a group of separation cavities (104) are formed in the connecting part (103).
8. A dual rotor electric machine for sharing a stator as claimed in claim 7, wherein: the separation cavity (104) is positioned between the inner stator core (101) and the outer stator core (102) which are adjacent to each other inside and outside.
9. A dual rotor electric machine for sharing a stator as claimed in claim 1, wherein: the outer rotor structure (3) comprises an outer rotor shell (301), and a magnet (302) matched with the common stator (1) is arranged in a cavity in the outer rotor shell (301).
10. A control method of a double-rotor motor using a common stator according to any one of claims 1 to 9, characterized in that: independent control of driving of the inner rotor structure and the outer rotor structure is achieved through independent control of magnetic circuits on the inner side and the outer side of the shared stator, and further independent control of loads on the rotor flange and the rotating shaft is achieved.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2023114274650 | 2023-10-31 | ||
| CN202311427465.0A CN117458813A (en) | 2023-10-31 | 2023-10-31 | Dual-rotor motor sharing stator and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117997062A true CN117997062A (en) | 2024-05-07 |
Family
ID=89592421
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311427465.0A Pending CN117458813A (en) | 2023-10-31 | 2023-10-31 | Dual-rotor motor sharing stator and method |
| CN202410157468.5A Pending CN117997062A (en) | 2023-10-31 | 2024-02-04 | Dual-rotor motor sharing stator and method |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311427465.0A Pending CN117458813A (en) | 2023-10-31 | 2023-10-31 | Dual-rotor motor sharing stator and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN117458813A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118054584B (en) * | 2024-04-16 | 2024-11-15 | 江苏三江电器集团股份有限公司 | A dual-axis independently controlled motor |
-
2023
- 2023-10-31 CN CN202311427465.0A patent/CN117458813A/en active Pending
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2024
- 2024-02-04 CN CN202410157468.5A patent/CN117997062A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN117458813A (en) | 2024-01-26 |
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