permanent magnet synchronous motor

Abstract

The application relates to a permanent magnet synchronous motor, which comprises a shell, a stator assembly, a rotor assembly, an end cover assembly and a junction box; the stator assembly and the rotor assembly are arranged in the cavity of the shell; the rotor assembly comprises a rotating shaft, a rotor core, a magnetic tile, a fixed sheath and two rotor locking rings; the rotor core is sleeved on the rotating shaft, the fixed sheath is sleeved on the outer side of the rotor core, the magnetic tile is arranged between the fixed sheath and the rotor core, and the magnetic tile is arranged in close contact with the outer side wall of the rotor core; the two rotor locking rings are arranged at the two ends of the rotor core and are fixedly connected with the rotor core; the stator assembly is sleeved on the outer side wall of the magnetic tile sheath; the end cover assembly is arranged at one end of the shell; and the junction box is arranged on the outer side wall of the shell. In a possible implementation mode, the application further comprises a bonding part; the bonding part is arranged between the magnetic tile and the rotor core.

Description

Technical Field

[0001] This application relates to the field of motor technology, and in particular to a permanent magnet synchronous motor. Background Technology

[0002] Permanent magnet synchronous motors are a common type of motor. Their rotor assembly typically includes a shaft, a rotor core, and magnets. Current technology widely employs a surface-mount structure, fixing the magnets to the outer surface of the rotor core. Surface-mount technology is widely used due to its simple structure, low manufacturing cost, and low torque ripple. However, when the motor operates at high speed, the magnets are subjected to centrifugal force. If the magnets are fixed to the rotor core surface solely with adhesive, this fixing method carries the risk of the magnets loosening or even being thrown off due to excessive centrifugal force, thus affecting the stability of the motor. Summary of the Invention

[0003] In view of this, this application proposes a permanent magnet synchronous motor, including: a housing, a stator assembly, a rotor assembly, an end cover assembly, and a junction box; Both the stator assembly and the rotor assembly are housed within the cavity of the housing. The rotor assembly includes: a rotating shaft, a rotor core, magnetic tiles, a fixed sheath, and two rotor locking rings. The rotor core is fitted onto the rotating shaft, the fixed sheath is fitted onto the outer side of the rotor core, and the magnetic tiles are positioned between the fixed sheath and the rotor core, with the magnetic tiles fitting snugly against the outer wall of the rotor core. Two rotor lock rings are respectively set at both ends of the rotor core, and the rotor lock rings are fixedly connected to the rotor core; The stator assembly is fitted onto the outer wall of the magnetic tile sheath; the end cover assembly is located at one end of the housing; and the junction box is located on the outer wall of the housing.

[0004] In one possible implementation, an adhesive portion is also included; the adhesive portion is disposed between the magnetic tile and the rotor core.

[0005] In one possible implementation, the stator assembly includes: a first stator core, a second stator core, windings, and a core pressure plate; Insulating grooves are provided on the outer side wall of the first stator core, and the windings are embedded in the insulation. The second stator core is sleeved on the outside of the first stator core, and two core pressure plates are respectively set at both ends of the second stator core.

[0006] In one possible implementation, a slot wedge is also included; the slot wedge is positioned at the opening of the insulating slot.

[0007] One possible implementation also includes: a first bearing and a second bearing; Both the first bearing and the second bearing are mounted on the rotating shaft, and the first bearing and the second bearing are respectively located on opposite sides of the rotor core.

[0008] In one possible implementation, it further includes: a first sheath and a second sheath; the first sheath is fitted onto the outside of the first bearing, and the second sheath is fitted onto the outside of the second bearing.

[0009] In one possible implementation, the end cap assembly includes: a rear end cap and a resolver end cap; The resolver end cap and the housing are respectively located on opposite sides of the rear end cap.

[0010] One possible implementation also includes: a rotary transformer assembly; The rotary transformer assembly is mounted on the rotating shaft and is located inside the rear end cover.

[0011] In one possible implementation, the resolver assembly includes a resolver stator and a resolver rotor; the resolver rotor is mounted on a shaft, and the resolver stator is mounted on the resolver rotor.

[0012] One possible implementation also includes: an air plug; the air plug is located in a junction box and is electrically connected to the stator assembly and the resolver stator respectively.

[0013] Beneficial effects of this application This application utilizes a fixed sheath and rotor locking rings. The fixed sheath tightly wraps the magnetic tile between the fixed sheath and the rotor core, thus providing radial constraint for the magnetic tile. When the motor operates at high speed and generates centrifugal force, the fixed sheath can effectively resist the centrifugal force on the magnetic tile, avoiding the risk of radial displacement of the magnetic tile due to centrifugal force. At the same time, the rotor locking rings are respectively set at both ends of the rotor core, thus providing axial restraint for the magnetic tile. The rotor locking rings prevent the magnetic tile from displacing along the axial direction of the rotor core, thereby preventing the magnetic tile from coming off the end of the rotor core. The fixed sheath and rotor locking rings work together to form a two-way restraint structure in both radial and axial directions, ensuring the stability of the magnetic tile during high-speed motor operation, and thus ensuring the stability of motor operation.

[0014] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0015] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0016] Figure 1 An exploded view of the permanent magnet synchronous motor structure according to an embodiment of this application is shown; Figure 2 A cross-sectional view of a permanent magnet synchronous motor according to an embodiment of this application is shown; Figure 3This diagram shows the main structural structure of the casing according to an embodiment of this application.

[0017] 100 housing; 110 mounting lugs; 200 stator assembly; 210 first stator core; 220 second stator core; 230 core pressure plate; 240 slot wedge; 300 rotor assembly; 310 shaft; 320 rotor core; 330 magnet; 340 mounting sleeve; 350 rotor locking ring; 410 rear end cover; 420 resolver end cover; 430 bolt; 510 resolver stator; 520 resolver rotor; 600 junction box; 610 aviation connector; 710 first bearing; 720 second bearing; 711 first sleeve; 721 second sleeve; 730 wave washer; 740 oil seal; 750 flat key. Detailed Implementation

[0018] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0019] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0022] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0023] This application proposes a permanent magnet synchronous motor, such as Figures 1 to 3 As shown, it includes: a housing 100, a stator assembly 200, a rotor assembly 300, an end cover assembly, and a junction box 600; the stator assembly 200 and the rotor assembly 300 are both housed within the cavity of the housing 100; the rotor assembly 300 includes: a shaft 310, a rotor core 320, magnets 330, a fixing sleeve 340, and two rotor locking rings 350; the rotor core 320 is sleeved on the shaft 310, and the fixing sleeve 340 is sleeved on the outside of the rotor core 320. The magnetic tile 330 is disposed between the fixed sleeve 340 and the rotor core 320, and the magnetic tile 330 is fitted to the outer side wall of the rotor core 320; two rotor locking rings 350 are respectively disposed at both ends of the rotor core 320, and the rotor locking rings 350 are fixedly connected to the rotor core 320; the stator assembly 200 is sleeved on the outer side wall of the magnetic tile 330 sleeve; the end cover assembly is disposed at one end of the housing 100; and the junction box 600 is disposed on the outer side wall of the housing 100.

[0024] It should be noted that the main body of the housing 100 is cylindrical with an opening on one side. The interior of the housing 100 forms a cavity for accommodating the stator assembly 200 and the rotor assembly 300. The stator assembly 200 is fixedly disposed within the cavity of the housing 100, and the housing 100 protects and isolates the internal rotor assembly 300 and stator assembly 200, preventing external interference with the normal operation of the motor and extending the service life of the overall structure. The outer wall of the housing 100 is provided with heat dissipation fins to enhance the heat dissipation capacity of the permanent magnet synchronous motor. The stator assembly 200... The rotor assembly 300 is suitable for generating a rotating magnetic field. Its main function is to be cut by magnetic lines of force in the rotating magnetic field to generate (output) current. The rotating shaft 310 is rotatably installed inside the housing 100 and is coaxial with the housing 100. The output end of the rotating shaft 310 is suitable for connecting to external equipment to drive the external equipment to work. The rotor core 320 is provided with a shaft hole, and the shaft hole is coaxial with the rotor core 320. The rotor core 320 is fixedly sleeved on the rotating shaft 310 through the shaft hole, so that the rotor core 320 rotates synchronously with the rotating shaft 310.

[0025] The magnetic tile 330 matches the outer contour of the rotor core 320. The magnetic tile 330 is mounted on the outer wall of the rotor core 320 and fits tightly against it. The fixing sleeve 340 is used to fix the magnetic tile 330 to the outside of the rotor core 320. The fixing sleeve 340 is fitted onto the outer wall of the magnetic tile 330 and fits tightly against the side of the magnetic tile 330 away from the rotor core 320. The fixing sleeve 340 applies a uniform clamping force to the outer wall of the magnetic tile 330, thereby radially fixing the magnetic tile 330 and preventing it from falling off due to centrifugal force during high-speed rotation. This ensures that the magnetic tile 330 is always tightly fitted against the outer wall of the rotor core 320. The main body of the rotor locking ring 350 is... The ring-shaped sheet structure has two rotor locking rings 350 with the same diameter as the fixing sleeve 340. The rotor locking rings 350 are fitted onto the rotating shaft 310 and are fixedly connected to the two end faces of the rotor core 320, thereby limiting and fixing the magnet 330 and preventing it from shifting due to centrifugal force during high-speed rotation. The end cover assembly is suitable for placement at the opening of the housing 100 to seal the stator assembly 200 and rotor assembly 300 inside the housing 100 cavity. The junction box 600 is located on the side wall adjacent to the opening of the housing 100, and its cavity is connected to the cavity of the housing 100. The junction box 600 is suitable for connecting the motor to an external power source. This application has a high size-to-power ratio, strong stability, and is resistant to high temperatures and impacts. It can still work stably under conditions of high temperature, high humidity, dust, impact, and vibration.

[0026] This application provides radial constraint for the magnetic tile 330 by setting a fixed sleeve 340 and a rotor locking ring 350. The fixed sleeve 340 tightly wraps the magnetic tile 330 between the fixed sleeve 340 and the rotor core 320. When the synchronous motor operates at high speed and generates centrifugal force, the fixed sleeve 340 can effectively resist the centrifugal force on the magnetic tile 330, avoiding the risk of radial displacement of the magnetic tile 330 due to centrifugal force. At the same time, the rotor locking rings 350 are respectively set at both ends of the rotor core 320, thereby providing axial limit for the magnetic tile 330. The rotor locking rings 350 prevent the magnetic tile 330 from displacing along the axial direction of the rotor core 320, thereby preventing the magnetic tile 330 from coming off the end of the rotor core 320. The fixed sleeve 340 and the rotor locking rings 350 work together to form a two-way radial and axial limiting structure, ensuring the stability of the magnetic tile 330 during high-speed operation of the motor, and thus ensuring the stability of motor operation.

[0027] In one possible implementation, an adhesive portion is also included; the adhesive portion is disposed between the magnetic tile 330 and the rotor core 320. It should be noted that there are two magnetic tiles 330, both of which have an arc-shaped sheet structure. The curvature of the magnetic tile 330 matches that of the outer wall of the rotor core 320. The inner arc surfaces of the two magnetic tiles 330 face the outer wall of the rotor core 320, and the two magnetic tiles 330 are symmetrically distributed along the circumference of the rotor core 320. This ensures that when the two magnetic tiles 330 are fixedly connected to the outer wall of the rotor core 320 via the adhesive portion, the two magnetic tiles 330 completely enclose and cover the outer wall of the rotor core 320. The design of the adhesive portion further improves the stability of the rotor assembly 300 structure.

[0028] Furthermore, the adhesive part is made of Loctite 648 high-strength adhesive.

[0029] In one possible implementation, the stator assembly 200 includes: a first stator core 210, a second stator core 220, windings, and core pressure plates 230; an insulating groove is formed on the outer side wall of the first stator core 210, and the windings are embedded in the insulation; the second stator core 220 is sleeved on the outside of the first stator core 210, and two core pressure plates 230 are respectively disposed at both ends of the second stator core 220.

[0030] It should be noted that the main body of the first stator core 210 is a hollow columnar structure. Insulating slots are spaced apart along the circumference of the first stator core 210 and extend along the circumference of the first stator core 210. The winding is made of high-strength enameled wire, and the winding is compatible with the insulating slots. The insulating slots are suitable for providing insulating installation space for the winding, ensuring insulation isolation between the winding and the first stator. By embedding the winding in the insulating slot, short circuits between the winding and the first stator core 210 are avoided. The first stator core 210 is sleeved on the rotor assembly 300; the second stator core 2... The main body of the stator 20 is a tubular structure with openings at both ends. The second stator core 220 is sleeved on the outside of the first stator core 210 to limit and seal the windings on the first stator core 210. The two ends of the second stator core 220 are respectively fixed with core pressure plates 230. The main body of the core pressure plates 230 is a circular sheet structure, and the diameter of the two core pressure plates 230 is the same as the diameter of the second stator core 220. The core pressure plates 230 are sleeved on the rotating shaft 310, and the core pressure plates 230 are fixedly connected to the two end faces of the second stator core 220, thereby ensuring the stability of the overall structure of the stator assembly.

[0031] Furthermore, a wire-passing groove is formed on the inner side wall of the iron core pressure plate 230. The wire-passing grooves are distributed at intervals along the circumference of the iron core pressure plate 230, and the wire-passing grooves correspond one-to-one with the insulation grooves of the first stator iron core 210, so that the windings on the first stator iron core 210 pass through the wire-passing grooves and are electrically connected to the external equipment.

[0032] In one possible implementation, a slot wedge 240 is also included; the slot wedge 240 is disposed at the opening of the insulating slot; it should be noted that the slot wedge 240 matches the opening of the insulating slot, and the slot wedge 240 is embedded at the opening of the insulating slot, thereby radially limiting the winding in the insulating slot, preventing the winding from coming out of the insulating slot, further strengthening the electrical isolation of the winding, and preventing short circuit between the winding and the second stator core 220.

[0033] In one possible implementation, it further includes: a first bearing 710 and a second bearing 720; both the first bearing 710 and the second bearing 720 are sleeved on the rotating shaft 310, and the first bearing 710 and the second bearing 720 are respectively arranged on opposite sides of the rotor core 320.

[0034] It should be noted that the inner ring of the first bearing 710 is fitted onto the rotating shaft 310, and one side of the first bearing 710 is tightly fitted against the side of one of the rotor locking rings 350 away from the rotor core 320. The first bearing 710 and the second bearing 720 together provide support for the rotating shaft 310 and the rotor core 320, magnet 330 and other components mounted on it. At the same time, the first bearing 710, the second bearing 720 and the rotor locking ring 350 are tightly fitted, thereby axially positioning the rotor core 320 and preventing axial movement of the rotor core 320 during rotation, ensuring that the rotor assembly 300 can rotate stably at high speed during motor operation.

[0035] In one possible implementation, a first sheath 711 and a second sheath 721 are also included; the first sheath 711 is sleeved on the outside of the first bearing 710, and the second sheath 721 is sleeved on the outside of the second bearing 720. It should be noted that the first sheath 711 and the second sheath 721 are disposed opposite each other at both ends of the rotor core 320. The main bodies of both the first sheath 711 and the second sheath 721 are annular structures. The outer ring of the first sheath 711 is fixedly disposed at one end of the housing 100 away from the end cover assembly, and the first sheath 711 is coaxially disposed with the housing 100. The first bearing 710 is disposed inside the first sheath 711, the second sheath 721 is fixedly disposed inside the end cover assembly, and the second bearing 720 is disposed inside the second sheath 721.

[0036] In one possible implementation, an oil seal 740 is also included. The oil seal 740 is sleeved on the rotating shaft 310, and both ends of the oil seal 740 are respectively fitted to the inner wall of the housing 100 and the first bearing 710. The design of the oil seal 740 effectively prevents the grease in the first bearing 710 from leaking outward, while preventing external water vapor, dust and other contaminants from entering the interior of the first bearing 710, thus extending the service life of the first bearing 710.

[0037] In one possible implementation, such as Figure 1 , Figure 2 As shown, the end cap assembly includes a rear end cap 410 and a resolver end cap 420; the resolver end cap 420 and the housing 100 are respectively disposed on opposite sides of the rear end cap 410.

[0038] It should be noted that the rear end cover 410 has a through hole in the middle. The side of the rear end cover 410 that connects to the housing 100 has a stepped fixing ring. The side wall of the fixing ring has bolt holes. The bolt holes of the rear end cover 410 correspond one-to-one with the bolt holes on the inner side wall of the housing 100. The two are fixedly connected by bolts 430. The main body of the resolver end cover 420 has a disc-shaped structure. Multiple bolt holes are opened around the edge of the resolver end cover 420. The resolver end cover 420 is fixedly connected to the rear end cover 410 by bolts 430.

[0039] In one possible implementation, a rotary transformer assembly is also included; the rotary transformer assembly is sleeved on the rotating shaft 310 and is located within the rear end cover 410.

[0040] It should be noted that the rotary transformer assembly is located on the side of the second bearing 720 away from the rotor core 320. The fixing ring of the rear end cover 410 has a wire hole, which is located at the connection between the junction box 600 and the housing 100. The electrical lead wire of the rotary transformer assembly passes through the wire hole on the rear end cover 410 and is electrically connected to the junction box 600. By setting the rotary transformer assembly inside the rear end cover 410, the inherent empty cavity inside the rear end cover 410 is fully utilized, and no additional installation space is required outside the motor, thus achieving a compact design of the motor system.

[0041] In one possible implementation, the resolver assembly includes a resolver stator 510 and a resolver rotor 520; the resolver rotor 520 is mounted on a rotating shaft 310, and the resolver stator 510 is mounted on the resolver rotor 520.

[0042] It should be noted that the main body of the resolver stator 510 is an annular structure; the resolver stator 510 is fixed to the inner wall of the fixing ring of the rear end cover 410, and the resolver stator 510 is set tightly against the rear end cover 410, and the resolver stator 510 is sleeved on the outside of the resolver rotor 520; at the same time, the main body of the resolver rotor 520 is also an annular structure; the through hole in the middle of the annular structure is sleeved on the outside of the rotating shaft 310, and a preset gap is provided between the resolver stator 510 and the resolver rotor 520. It should be noted that the resolver assembly adopts a reluctance resolver, and the output voltage changes as the resolver rotor 520 rotates.

[0043] In one possible implementation, it also includes: a wave washer 730; the main body of the wave washer 730 is an annular structure, the wave washer 730 is sleeved on the rotating shaft 310, and the two sides of the wave washer 730 are respectively tightly attached to the second bearing 720 and the resolver stator 510.

[0044] In one possible implementation, a flat key 750 is also included. The inner surface of the resolver rotor 520 is provided with a first keyway, and correspondingly, the outer surface of the end of the shaft 310 (i.e., the end through which the shaft 310 passes the second bearing 720) is provided with a second keyway. The opposite sides of the flat key 750 are respectively embedded in the first keyway and the second keyway, thereby circumferentially fixing the resolver rotor 520 and the shaft 310, ensuring that the resolver rotor 520 rotates synchronously with the shaft 310. The design of the flat key 750 is a conventional technical means in the art to ensure that the resolver rotor 520 rotates synchronously with the shaft 310.

[0045] In one possible implementation, the method further includes: a connector 610; the connector 610 is disposed within the junction box 600 and is electrically connected to the stator assembly 200 and the resolver stator 510. It should be noted that the junction box 600 has a rectangular cavity structure. Bolt holes are provided on the side of the junction box 600 facing away from the housing 100. A fixing part is provided around the circumference of the connector 610. One end of the connector 610 is inserted into the junction box 600 so that the fixing part of the connector 610 abuts against the end of the junction box 600 facing away from the housing 100. The connector 610 is fixed to the junction box 600 by bolts passing through the fixing part, thereby fixing the connector 610 to the junction box 600. The electrical leads of the resolver assembly and the windings of the stator assembly 200 are all connected to the connector 610.

[0046] In one possible implementation, the housing 100 is provided with a fixing ear 110, which is disposed on the outer side wall of the housing 100. The fixing ear 110 consists of four fixing holes, which protrude from the outer side wall of the housing 100 opposite to the end face of the end cover assembly. The housing 100 is suitable for fixed connection with the installation position via the fixing ear 110.

[0047] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A permanent magnet synchronous motor, characterized in that, include: Housing, stator assembly, rotor assembly, end cover assembly, and junction box; Both the stator assembly and the rotor assembly are disposed within the cavity of the housing; The rotor assembly includes: a rotating shaft, a rotor core, magnetic tiles, a fixing sleeve, and two rotor locking rings; The rotor core is sleeved on the rotating shaft, the fixed sleeve is sleeved on the outside of the rotor core, and the magnetic tile is disposed between the fixed sleeve and the rotor core, and the magnetic tile is fitted to the outer wall of the rotor core. The two rotor locking rings are respectively disposed at both ends of the rotor core, and the rotor locking rings are fixedly connected to the rotor core; The stator assembly is sleeved on the outer wall of the magnetic tile sheath; The end cap assembly is disposed at one end of the housing; the junction box is disposed on the outer side wall of the housing.

2. The permanent magnet synchronous motor according to claim 1, characterized in that, It also includes the adhesive portion; The adhesive portion is disposed between the magnetic tile and the rotor core.

3. The permanent magnet synchronous motor according to claim 1, characterized in that, The stator assembly includes: a first stator core, a second stator core, windings, and a core pressure plate; An insulating groove is formed on the outer side wall of the first stator core, and the winding is embedded in the insulation. The second stator core is sleeved on the outside of the first stator core, and the two core pressure plates are respectively disposed at both ends of the second stator core.

4. The permanent magnet synchronous motor according to claim 3, characterized in that, Also includes: Groove wedge; The slot wedge is disposed at the opening of the insulating slot.

5. The permanent magnet synchronous motor according to claim 1, characterized in that, Also includes: First bearing and second bearing; Both the first bearing and the second bearing are sleeved on the rotating shaft, and the first bearing and the second bearing are respectively located on opposite sides of the rotor core.

6. The permanent magnet synchronous motor according to claim 5, characterized in that, Also includes: First sheath and second sheath; The first sheath is fitted on the outside of the first bearing, and the second sheath is fitted on the outside of the second bearing.

7. The permanent magnet synchronous motor according to claim 1, characterized in that, The end cap assembly includes: a rear end cap and a resolver end cap; The resolver end cap and the housing are respectively disposed on opposite sides of the rear end cap.

8. The permanent magnet synchronous motor according to claim 7, characterized in that, Also includes: Rotary transformer assembly; The rotary transformer assembly is sleeved on the rotating shaft and is located inside the rear end cover.

9. The permanent magnet synchronous motor according to claim 8, characterized in that, The rotary transformer assembly includes a rotary stator and a rotary rotor; the rotary rotor is mounted on the rotating shaft, and the rotary stator is mounted on the rotary rotor.

10. The permanent magnet synchronous motor according to claim 9, characterized in that, Also includes: Airplane insertion; The aviation connector is installed inside the junction box and is electrically connected to the stator assembly and the resolver stator, respectively.

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