Dual rotor electric machine, motor and aircraft

Abstract

The application provides a dual-rotor motor, a motor and an aircraft. The dual-rotor motor comprises a stator assembly comprising a stator winding, an inner rotor assembly arranged radially inward of the stator assembly and comprising an inner rotor fixing ring and a plurality of inner magnets arranged on the inner rotor fixing ring, wherein an inner air gap is formed between the inner rotor assembly and the stator assembly, an outer rotor assembly arranged radially outward of the stator assembly and comprising an outer rotor fixing ring and a plurality of outer magnets arranged on the outer rotor fixing ring, wherein an outer air gap is formed between the outer rotor assembly and the stator assembly, a stator fixing base for supporting the stator assembly, and a rotor support for bearing the inner rotor assembly and the outer rotor assembly. The torques generated by the inner rotor assembly and the outer rotor assembly of the dual-rotor motor can be superimposed in the same direction on the rotor support, so that the motor can output the superimposed torque through the rotor support.

Description

Technical Field

[0001] This application belongs to the field of electrical technology, and particularly relates to a dual-rotor motor, a motor and an aircraft. Background Technology

[0002] With the rapid development of electric vehicles, electric vertical takeoff and landing (eVTOL) aircraft, and drones, higher demands are being placed on the torque density of drive motors. However, due to space constraints, especially in applications such as hub-driven direct drive and aircraft propulsion systems, the overall size of the motor often cannot be increased. Moreover, under the same conditions, a smaller overall size is more competitive. Therefore, how to improve torque output capability without changing or even reducing the overall size of the motor has become a pressing technical challenge in this field. Summary of the Invention

[0003] The purpose of this application is to solve the technical problem in the prior art that it is difficult to further improve torque output under the condition of limited overall size of motor.

[0004] To achieve the above objectives, the first aspect of this application provides a dual-rotor motor, comprising:

[0005] A stator assembly, which includes stator windings;

[0006] An inner rotor assembly is disposed radially inside the stator assembly and includes a plurality of inner magnets, wherein an inner air gap is formed between the inner rotor assembly and the stator assembly;

[0007] An outer rotor assembly is disposed radially outside the stator assembly and includes a plurality of outer magnets, wherein an outer air gap is formed between the outer rotor assembly and the stator assembly;

[0008] Stator mounting base for supporting the stator assembly; and

[0009] A rotor support for supporting the inner rotor assembly and the outer rotor assembly.

[0010] In some exemplary embodiments, the rotor support includes a rotor base disk, and an inner cylinder and an outer cylinder coaxially disposed on the rotor base disk;

[0011] An inner rotor fixing ring is fixedly sleeved on the outer periphery of the inner cylinder, and the inner magnet is disposed on the outer periphery of the inner rotor fixing ring;

[0012] The outer magnet is disposed on the inner circumference of the outer cylinder.

[0013] In some exemplary embodiments, the rotor base, the inner cylinder, and the outer cylinder are integrally formed.

[0014] In some exemplary embodiments, the stator mounting base is provided with a cylindrical extension, the rotor base is provided with a rotating shaft, and the rotating shaft extends into the interior of the cylindrical extension;

[0015] The cylindrical extension is provided with a bearing inside. The inner ring of the bearing is interference-fitted with the shaft, and the outer ring of the bearing is interference-fitted with the inner circumferential surface of the cylindrical extension, so that the shaft is rotatably supported by the cylindrical extension via the bearing.

[0016] In some exemplary embodiments, the cylindrical extension extends from the stator mounting base toward the rotor support.

[0017] In some exemplary embodiments, the stator assembly further includes a first insulating support frame, a second insulating support frame, and a stator core. The first insulating support frame is disposed at one end of the stator assembly, the second insulating support frame is disposed at the other end of the stator assembly, the stator core is disposed between the first insulating support frame and the second insulating support frame, and the stator winding is wound on the stator core.

[0018] The first insulating support frame includes a first annular portion and a plurality of first positioning posts, wherein the plurality of first positioning posts are respectively disposed on the inner periphery and the outer periphery of the first annular portion;

[0019] The second insulating support frame includes a second annular portion and a plurality of second positioning posts, wherein the plurality of second positioning posts are respectively disposed on the inner periphery and the outer periphery of the second annular portion;

[0020] The stator core is provided with multiple positioning holes, and the first positioning post and the second positioning post extend into the positioning holes from both ends of the stator core, respectively.

[0021] In some exemplary embodiments, the first annular portion of the first insulating support frame is fixed to the stator mounting base.

[0022] In some exemplary embodiments, the stator assembly can extend axially to the location of the rotor base disk, such that a first rotational clearance is formed between the second annular portion of the second insulating support and the rotor base disk.

[0023] In some exemplary embodiments, the outer cylinder extends toward the stator fixing seat and extends to the edge of the stator fixing seat, forming a second rotational clearance with the stator fixing seat;

[0024] The stator mounting base, the outer cylinder, and the rotor base together constitute the outer shell of the dual-rotor motor.

[0025] In some exemplary embodiments, at least one toothed ring is provided on the end face of the stator fixing base facing the stator winding, and a plurality of toothed grooves are formed on the end face of the toothed ring facing the stator fixing base;

[0026] The stator winding has lead wires, which are clamped within the tooth grooves and sealed and fixed with sealant;

[0027] The end of the lead wire extends outside the stator mounting base for connection to an external power source to supply power to the stator winding.

[0028] In some exemplary embodiments, the toothed rings are provided in pairs.

[0029] In some exemplary embodiments, the following features are described:

[0030] The inner magnet has the same number of pole pairs as the outer magnet;

[0031] The surfaces of adjacent inner magnets along the circumferential direction facing the stator assembly have opposite polarities, and the surfaces of adjacent outer magnets along the circumferential direction facing the stator assembly have opposite polarities.

[0032] The inner magnet and the outer magnet are arranged opposite each other in the radial direction and have opposite polarities.

[0033] The torque generated by the inner rotor assembly is superimposed in the same direction as the torque generated by the outer rotor assembly.

[0034] A second aspect of this application provides a motor including the dual-rotor motor described in the first aspect, wherein the dual-rotor motor is configured to drive the rotor support to rotate to output torque when the stator windings are energized.

[0035] A third aspect of this application provides an aircraft comprising a dual-rotor motor as claimed in any one of claims 1 to 12, or comprising a motor as claimed in claim 13. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the internal structure of the dual-rotor motor provided in this application;

[0037] Figure 2 This is a schematic diagram of the stator assembly;

[0038] Figure 3 This is a schematic diagram of the stator winding structure;

[0039] Figure 4 This is a schematic diagram of the structure of the first insulating support frame;

[0040] Figure 5 This is a schematic diagram of the second insulating support frame;

[0041] Figure 6 yes Figure 3 Enlarged schematic diagram of the structure within frame C;

[0042] Figure 7 yes Figure 4 Enlarged schematic diagram of the structure within frame D;

[0043] Figure 8 yes Figure 1 Enlarged schematic diagram of the structure within frame A;

[0044] Figure 9 This is a structural diagram of the rotor support, inner rotor assembly, and outer rotor assembly;

[0045] Figure 10 This is a schematic diagram of the rotor support and inner rotor fixing ring;

[0046] Figure 11 yes Figure 1 Enlarged schematic diagram of the structure within frame B in the middle;

[0047] Figure 12 This is a structural diagram of the stator fixing seat, the first insulating support frame, and the gear ring.

[0048] Explanation of reference numerals in the attached figures:

[0049] 10. Dual-rotor motor;

[0050] 20. Stator assembly;

[0051] 21. Stator windings;

[0052] 22. Stator core;

[0053] 221. Positioning hole;

[0054] 23. First insulating support frame;

[0055] 231. First annular portion;

[0056] 232. First positioning post;

[0057] 233. First threaded hole;

[0058] 24. Second insulating support frame;

[0059] 241. Second annular portion;

[0060] 242. Second positioning post;

[0061] 30. Internal rotor assembly;

[0062] 31. Inner rotor retaining ring;

[0063] 311. Card slot;

[0064] 32. Internal magnet;

[0065] 40. External rotor assembly;

[0066] 41. Outer rotor retaining ring;

[0067] 42. External magnet;

[0068] 50. Stator mounting base;

[0069] 51. Second threaded hole;

[0070] 52. Cylindrical extension;

[0071] 53. Fixing groove;

[0072] 60. Rotor support;

[0073] 61. Rotor base disk;

[0074] 611. Mounting holes;

[0075] 62. Inner cylinder;

[0076] 63. Outer cylinder;

[0077] 64. Shaft;

[0078] 641. Flange section;

[0079] 71. First rotational clearance;

[0080] 72. Second rotational clearance;

[0081] 80. Bearings;

[0082] 90. Toothed ring;

[0083] 91. Glandular groove;

[0084] 92. Fixing pin.

[0085] Unless otherwise stated, the same reference numerals or symbols denote the same elements in the accompanying drawings.

[0086] It should be understood that the accompanying drawings are not necessarily drawn to scale, but rather present simplified representations of various features to illustrate the principles of this application. The specific design features disclosed in this application (including, for example, specific dimensions, orientations, locations, and shapes) will be determined in part by the specific application and environment in which they will be used.

[0087] Throughout these figures, and across multiple figures, the same reference numerals denote the same or equivalent parts of this application. Detailed Implementation

[0088] The various embodiments of this application will now be described in detail with reference to examples of these embodiments, which are presented in the accompanying drawings and described below. Although this application will be described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit this application to these exemplary embodiments. Rather, this application is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents, and other embodiments that can be included within the spirit of this application and the scope defined by the appended claims. In this application, the axial direction (i.e., axial) refers to the direction parallel to the central axis of the motor (dual rotor motor 10), that is, the direction extending along the length of the motor, specifically with reference to the axial extension direction of each component. The stator assembly 20 extends axially to the position of the rotor base 61, and the outer cylinder 63 extends axially to the edge position of the stator fixing seat 50. Both extend axially from opposite ends of the motor, jointly defining the axial dimension range of the dual rotor motor 10. The first positioning post 232 and the second positioning post 242 extend axially from both ends of the stator core 22 into the positioning holes 221 to axially position the stator core 22. The axial direction of the rotating shaft 64 is the same as the rotation axis of the rotor support 60, and the axial extension of all other components is based on this direction.

[0089] In this application, the radial direction (i.e., radial) refers to the direction perpendicular to the central axis of the motor, that is, the direction extending along the diameter of the motor, specifically with reference to the radial direction of each annular component. The inner rotor assembly 30, stator assembly 20, and outer rotor assembly 40 are arranged radially from the inside to the outside, forming a multi-layered concentric nested structure. The inner magnet 32 ​​and outer magnet 42 are radially opposite each other, meaning that the inner magnet 32 ​​and the corresponding outer magnet 42 are directly opposite each other in a direction perpendicular to the central axis. The rotating shaft 64, bearing 80, and cylindrical extension 52 are sequentially fitted together radially from the inside to the outside, allowing the rotor support 60 to be rotatably supported on the stator mounting base 50.

[0090] like Figure 1 As shown, the dual rotor motor 10 (hereinafter referred to as motor 10) provided in this application mainly includes a stator assembly 20, an inner rotor assembly 30, an outer rotor assembly 40, a stator mounting base 50, and a rotor support 60.

[0091] The inner rotor assembly 30 is disposed radially inside the stator assembly 20, forming an inner air gap between the inner rotor assembly 30 and the stator assembly 20. The outer rotor assembly 40 is disposed radially outside the stator assembly 20, forming an outer air gap between the outer rotor assembly 40 and the stator assembly 20. The rotating magnetic field generated by the stator winding 21 after being energized passes through both the inner and outer air gaps and interacts with the inner rotor assembly 30 and the outer rotor assembly 40 respectively to generate torque.

[0092] The stator mounting base 50 supports the stator assembly 20, and the rotor support 60 carries the inner rotor assembly 30 and the outer rotor assembly 40. The stator assembly 20 is fixed to the stator mounting base 50, thereby holding it between the inner rotor assembly 30 and the outer rotor assembly 40. The torques generated by the inner rotor assembly 30 and the outer rotor assembly 40 can be superimposed in the same direction on the rotor support 60, thus enabling the motor 10 to output the superimposed torque through the rotor support 60. Therefore, with the same axial dimension, the dual-rotor motor 10 provided in this application can output a larger torque.

[0093] The following is in conjunction with the appendix Figure 2 To be continued Figure 7 The structure of stator assembly 20 is described in detail.

[0094] The stator assembly 20 includes a stator winding 21, a stator core 22, a first insulating support frame 23, and a second insulating support frame 24. The first insulating support frame 23 is disposed at one end of the stator assembly 20, and the second insulating support frame 24 is disposed at the other end of the stator assembly 20. The stator core 22 is disposed between the first insulating support frame 23 and the second insulating support frame 24, and the stator winding 21 is wound on the stator core 22. Thus, the first insulating support frame 23 and the second insulating support frame 24 support the stator core 22 from both ends, and the stator core 22 provides support for the stator winding 21.

[0095] Specifically, the first insulating support frame 23 includes a first annular portion 231 and a plurality of first positioning posts 232, which are respectively disposed on the inner and outer peripheries of the first annular portion 231. The second insulating support frame 24 includes a second annular portion 241 and a plurality of second positioning posts 242, which are respectively disposed on the inner and outer peripheries of the second annular portion 241. The stator core 22 is provided with a plurality of positioning holes 221, and the first positioning posts 232 and the second positioning posts 242 extend into the positioning holes 221 from both ends of the stator core 22.

[0096] The first annular portion 231 of the first insulating support frame 23 is fixed to the stator mounting base 50, thereby fixing the entire stator assembly 20 to the stator mounting base 50. Exemplarily, the first annular portion 231 is provided with a plurality of first threaded holes 233, and the stator mounting base 50 is provided with a plurality of second threaded holes 51. The plurality of first threaded holes 233 and the plurality of second threaded holes 51 correspond one-to-one and are connected by screws or other connecting components. Of course, this application does not limit the connection method between the first annular portion 231 and the stator mounting base 50. In some exemplary embodiments, the first annular portion 231 can also be fixed to the stator mounting base 50 by bolt connection, adhesive bonding, or other methods.

[0097] The stator core 22 is formed by stacking multiple layers of silicon steel sheets along the axial direction. Each layer includes multiple circumferentially arranged silicon steel sheets, which form multiple holes. The multiple holes of each layer of silicon steel sheets correspond to each other in the axial direction to form multiple positioning holes 221.

[0098] The first insulating support frame 23 and the second insulating support frame 24 can be made of materials with good insulation properties, such as polyphenylene sulfide (PPS), polybutylene terephthalate (PBT) or nylon (PA66). These materials have high heat resistance and mechanical strength, which can meet the insulation and support requirements of the motor 10 during operation.

[0099] The following is combined with Figure 1 and Figure 8 The first rotational clearance 71 is described in detail.

[0100] The stator assembly 20 can extend axially to the rotor base 61 (described in detail below), and a first rotational gap 71 is formed between the second annular portion 241 of the second insulating support 24 and the rotor base 61. That is, the stator assembly 20 extends axially from the stator mounting base 50 to the end position of the rotor support 60 (i.e., at the rotor base 61), almost filling the entire internal space of the motor 10 in the axial direction.

[0101] The first rotational clearance 71 ensures that there is no interference when the stator assembly 20 and the rotor support 60 rotate relative to each other. In other words, the first rotational clearance 71 only needs to meet the minimum requirement that allows relative rotation between the stator assembly 20 and the rotor support 60. As a result, the remaining axial space inside the motor 10 (except for the first rotational clearance 71) is entirely used for the arrangement of the stator windings 21, thereby maximizing torque without changing the size of the motor 10.

[0102] The following is combined with Figure 9 and Figure 10 The structure of the rotor support 60, inner rotor assembly 30 and outer rotor assembly 40 is described in detail.

[0103] The rotor support 60 includes a rotor base disk 61, and an inner cylinder 62 and an outer cylinder 63 coaxially disposed on the rotor base disk 61. In some exemplary embodiments, the rotor base disk 61, the inner cylinder 62, and the outer cylinder 63 can be integrally formed. Furthermore, in other exemplary embodiments, the rotor base disk 61, the inner cylinder 62, and the outer cylinder 63 can also be a split structure, i.e., each component is processed separately and then fixed together by welding, bolting, or keying. The rotor support 60 can be made of materials such as aluminum-copper-magnesium-hard aluminum or heat-treatable aluminum alloys, which have excellent fatigue resistance and heat stability below 150°C.

[0104] The inner rotor assembly 30 includes an inner rotor retaining ring 31 and a plurality of inner magnets 32 disposed on the inner rotor retaining ring 31. (See also...) Figure 10 In some exemplary embodiments, the inner rotor fixing ring 31 is a cylindrical structure, which is sleeved onto the outer periphery of the inner cylinder 62. The inner magnets 32 are disposed on the outer periphery of the inner rotor fixing ring 31, and multiple inner magnets 32 are arranged at equal intervals along the circumferential direction. Exemplarily, the outer circumferential surface of the inner rotor fixing ring 31 is provided with multiple slots 311, each slot 311 extending axially. Each inner magnet 32 ​​is an elongated structure and is correspondingly embedded in one slot 311, wherein the inner magnet 32 ​​and the slot 311 are interference-fitted. The inner rotor fixing ring 31 can be made of materials such as aluminum-copper-magnesium-hard aluminum or heat-treatable aluminum alloy, which have excellent fatigue resistance and heat stability below 150℃.

[0105] The outer rotor assembly 40 includes an outer rotor retaining ring 41 and a plurality of outer magnets 42 disposed on the outer rotor retaining ring 41. In some exemplary embodiments, the outer rotor retaining ring 41 is formed by an outer cylinder 63 of a rotor support 60, the outer magnets 42 are disposed on the inner circumference of the outer cylinder 63, and the plurality of outer magnets 42 are arranged at equal intervals along the circumferential direction. Exemplarily, each outer magnet 42 is an elongated structure and is fixed to the inner circumferential surface of the outer cylinder 63 by adhesive bonding, wherein each outer magnet 42 extends along the axial direction of the outer cylinder 63.

[0106] In some exemplary embodiments, the inner magnets 32 and outer magnets 42 have the same number of pole pairs, and the surfaces of circumferentially adjacent inner magnets 32 facing the stator assembly 20 have opposite polarities, as do the surfaces of circumferentially adjacent outer magnets 42 facing the stator assembly 20. Furthermore, the plurality of inner magnets 32 and the plurality of outer magnets 42 are radially aligned one-to-one, and the inner magnets 32 and outer magnets 42 arranged radially opposite each other have opposite polarities. Thus, the torque generated by the inner rotor assembly 30 and the torque generated by the outer rotor assembly 40 can be superimposed in the same direction and ultimately output through the rotor support 60.

[0107] The following is combined with Figure 1 and Figure 11 The second rotational clearance 72 is described in detail.

[0108] The outer cylinder 63 of the rotor support 60 extends toward the stator mounting base 50 and to the edge of the stator mounting base 50, forming a second rotational clearance 72 between the rotor support 60 and the stator mounting base 50. The stator mounting base 50, the outer cylinder 63, and the rotor base 61 together constitute the outer casing of the dual-rotor motor 10.

[0109] Similarly, the second rotational clearance 72 ensures that the rotor support 60 and the stator mounting base 50 do not interfere with each other when they rotate relative to each other. In other words, the second rotational clearance 72 only needs to meet the minimum requirement that allows relative rotation between the rotor support 60 and the stator mounting base 50. As a result, the structural layout between the rotor support 60 and the stator mounting base 50 is more compact, which is beneficial for increasing the axial dimensions of the inner rotor assembly 30 and the outer rotor assembly 40, thereby enabling a higher torque output capability without increasing the overall size of the motor 10.

[0110] The following is combined with Figure 1 and Figure 12 The cylindrical extension 52, the rotating shaft 64, and the bearing 80 are described in detail.

[0111] A cylindrical extension 52 is provided on the stator mounting base 50, extending from the stator mounting base 50 toward the rotor support 60. A rotating shaft 64 is provided on the rotor base 61, wherein the rotating shaft 64 and the rotor base 61 are coaxially arranged and extend into the interior of the cylindrical extension 52. The rotating shaft 64 is rotatably supported by the cylindrical extension 52, so that it can be rotatably held within the cylindrical extension 52. Thus, the rotor support 60 can be supported by the stator mounting base 50 via the rotating shaft 64 and can rotate relative to the stator mounting base 50.

[0112] A bearing 80 is disposed inside the cylindrical extension 52. The inner ring of the bearing 80 is interference-fitted with the rotating shaft 64, and the outer ring of the bearing 80 is interference-fitted with the inner circumferential surface of the cylindrical extension 52, so that the rotating shaft 64 is rotatably supported by the cylindrical extension 52 via the bearing 80. For example, at least two bearings 80 may be provided.

[0113] Furthermore, the rotating shaft 64 and the cylindrical extension 52 are coaxially arranged. Since the rotating shaft 64 extends into the interior of the cylindrical extension 52 and the two are coaxial, the rotating shaft 64 and the central axis of the cylindrical extension 52 coincide, ensuring the coaxiality between the rotor support 60 and the stator assembly 20, so that the inner air gap and the outer air gap remain uniform in the radial direction.

[0114] In some exemplary embodiments, see Figure 1 The rotating shaft 64 and the rotor base 61 are separate structures. The rotor base 61 has a mounting hole 611, which is coaxial with the rotor base 61. The rotating shaft 64 passes through the mounting hole 611 and is fixedly connected to the rotor base 61. Exemplarily, one end of the rotating shaft 64 is provided with a flange 641, which is fixed to the rotor base 61 by screws or other connecting parts. The other end of the rotating shaft 64 extends into the interior of the cylinder extension.

[0115] In some other exemplary embodiments, the rotating shaft 64 is integrally formed with the rotor base disk 61. That is, the rotating shaft 64 extends directly from the rotor base disk 61 toward the cylindrical extension 52, and the two constitute a single integral part.

[0116] The following is combined with Figure 12 Detailed introduction to the toothed ring 90.

[0117] At least one toothed ring 90 is provided on the end face of the stator mounting base 50 facing the stator winding 21. Further, a plurality of toothed grooves 91 are formed on the end face of the toothed ring 90 facing the stator mounting base 50.

[0118] The stator winding 21 has leads that are clamped within the slots 91 and extend beyond the stator mounting base 50 for connection to an external power source to supply power to the stator winding 21. The slots 91 provide circumferential restraint for the leads, allowing the leads of the multiphase winding to be arranged in an orderly manner along the circumference of the toothed ring 90.

[0119] In some exemplary embodiments, the toothed ring 90 is fixed to the stator mounting base 50 by snap-fit. Specifically, a plurality of fixing pins 92 are provided on the end face of the toothed ring 90 facing the stator mounting base 50, and a plurality of fixing grooves 53 are provided on the stator mounting base 50, with the plurality of fixing pins 92 corresponding to and connected to the plurality of fixing grooves 53 one by one.

[0120] Furthermore, the lead wire is sealed and fixed with sealant.

[0121] Preferably, two toothed rings 90 are provided, which are concentrically arranged to better fix the lead wire.

[0122] The second aspect of this application also provides a motor that employs the dual-rotor motor 10 provided in the first aspect of this application. In this case, the dual-rotor motor 10 is configured to drive the rotor support 60 to rotate when the stator winding 21 is energized, so as to output the torque generated by the inner rotor assembly 30 and the outer rotor assembly 40 together.

[0123] A third aspect of this application also provides an aircraft that employs the dual-rotor motor 10 provided in the first aspect of this application, or the motor provided in the second aspect of this application. Exemplarily, the aircraft may be a drone.

[0124] The foregoing description of specific exemplary embodiments of this application is for illustrative and descriptive purposes. The foregoing description is not intended to be exhaustive, nor is it intended to limit this application to the precise forms disclosed; obviously, many changes and variations are possible in accordance with the foregoing teachings. The exemplary embodiments were chosen and described to explain the specific principles of this application and its practical application, thereby enabling others skilled in the art to implement and utilize various exemplary embodiments of this application and their different alternatives and modifications. The scope of this application is defined by the appended claims and their equivalents.

Claims

1. A dual-rotor motor, characterized in that, include: A stator assembly, which includes stator windings; An inner rotor assembly is disposed radially inside the stator assembly and includes a plurality of inner magnets, wherein an inner air gap is formed between the inner rotor assembly and the stator assembly; An outer rotor assembly is disposed radially outside the stator assembly and includes a plurality of outer magnets, wherein an outer air gap is formed between the outer rotor assembly and the stator assembly; Stator mounting base for supporting the stator assembly; and A rotor support for supporting the inner rotor assembly and the outer rotor assembly.

2. The dual-rotor motor according to claim 1, characterized in that, The rotor support includes a rotor base disk, and an inner cylinder and an outer cylinder coaxially disposed on the rotor base disk; An inner rotor fixing ring is fixedly sleeved on the outer periphery of the inner cylinder, and the inner magnet is disposed on the outer periphery of the inner rotor fixing ring; The outer magnet is disposed on the inner circumference of the outer cylinder.

3. The dual-rotor motor according to claim 2, characterized in that, The rotor base, the inner cylinder, and the outer cylinder are integrally formed.

4. The dual-rotor motor according to claim 2, characterized in that, The stator mounting base is provided with a cylindrical extension, and the rotor base is provided with a rotating shaft, which extends into the interior of the cylindrical extension. The cylindrical extension is provided with a bearing inside. The inner ring of the bearing is interference-fitted with the shaft, and the outer ring of the bearing is interference-fitted with the inner circumferential surface of the cylindrical extension, so that the shaft is rotatably supported by the cylindrical extension via the bearing.

5. The dual-rotor motor according to claim 4, characterized in that, The cylindrical extension extends from the stator mounting base toward the rotor support.

6. The dual-rotor motor according to claim 2, characterized in that, The stator assembly further includes a first insulating support frame, a second insulating support frame, and a stator core. The first insulating support frame is disposed at one end of the stator assembly, the second insulating support frame is disposed at the other end of the stator assembly, the stator core is disposed between the first insulating support frame and the second insulating support frame, and the stator winding is wound on the stator core. The first insulating support frame includes a first annular portion and a plurality of first positioning posts, wherein the plurality of first positioning posts are respectively disposed on the inner periphery and the outer periphery of the first annular portion; The second insulating support frame includes a second annular portion and a plurality of second positioning posts, wherein the plurality of second positioning posts are respectively disposed on the inner periphery and the outer periphery of the second annular portion; The stator core is provided with multiple positioning holes, and the first positioning post and the second positioning post extend into the positioning holes from both ends of the stator core, respectively.

7. The dual-rotor motor according to claim 6, characterized in that, The first annular portion of the first insulating support frame is fixed to the stator mounting base.

8. The dual-rotor motor according to claim 6, characterized in that, The stator assembly can extend axially to the position of the rotor base disk, and a first rotational gap is formed between the second annular portion of the second insulating support frame and the rotor base disk.

9. The dual-rotor motor according to claim 6, characterized in that, The outer cylinder extends toward the stator fixing seat and extends to the edge of the stator fixing seat, forming a second rotational clearance with the stator fixing seat; The stator mounting base, the outer cylinder, and the rotor base together constitute the outer shell of the dual-rotor motor.

10. The dual-rotor motor according to claim 1, characterized in that, At least one toothed ring is provided on the end face of the stator fixing base facing the stator winding, and multiple toothed grooves are formed on the end face of the toothed ring facing the stator fixing base. The stator winding has lead wires, which are clamped within the tooth grooves and sealed and fixed with sealant; The end of the lead wire extends outside the stator mounting base for connection to an external power source to supply power to the stator winding.

11. The dual-rotor motor according to claim 10, characterized in that, The toothed rings are configured in pairs.

12. The dual-rotor motor according to any one of claims 1 to 11, characterized in that, The inner magnet has the same number of pole pairs as the outer magnet; The surfaces of adjacent inner magnets along the circumferential direction facing the stator assembly have opposite polarities, and the surfaces of adjacent outer magnets along the circumferential direction facing the stator assembly have opposite polarities. The inner magnet and the outer magnet are arranged opposite each other in the radial direction and have opposite polarities. The torque generated by the inner rotor assembly is superimposed in the same direction as the torque generated by the outer rotor assembly.

13. A motor, characterized in that, The invention includes a dual-rotor motor as described in any one of claims 1 to 12, wherein the dual-rotor motor is configured to drive the rotor support to rotate to output torque when the stator winding is energized.

14. An aircraft, characterized in that, It includes a dual-rotor motor as described in any one of claims 1 to 12, or a motor as described in claim 13.

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