Axial flux permanent magnet synchronous motor

Abstract

The invention relates to the technical field of motors, in particular to an axial flux permanent magnet synchronous motor, which comprises a rotating shaft assembly and a wire holder assembly, and is characterized in that the surface of the rotating shaft assembly is sleeved with a rotor assembly; stator assemblies sleeve the surface of the rotating shaft assembly and are positioned on the upper side and the lower side of the rotor assembly; the stator assemblies are matched with the rotor assembly after being electrified to promote the rotating shaft assembly to rotate; the rotor assembly comprises a rotor frame, permanent magnets and a slip ring, the permanent magnets are uniformly distributed and fixed on the rotor frame along the axial direction, and the outer edges of the rotor frame and the permanent magnets are hooped and fixed through the slip ring; the stator assembly comprises an upper stator group and a lower stator group, the upper stator group is arranged above the rotor assembly, the lower stator group is arranged below the rotor assembly, and the lower stator group and the upper stator group are electrified to generate a magnetic field to promote the rotor assembly to rotate. The motor is simple in structure and convenient to assemble, the magnetic field intensity is increased through the arranged stator assembly, and the torque of the motor is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and specifically to an axial-flux permanent magnet synchronous motor. Background Art

[0002] A motor refers to an electromagnetic device that realizes the conversion or transmission of electrical energy based on the law of electromagnetic induction. Its main function is to generate a driving torque and serve as a power source for electrical appliances or various machines. A permanent magnet synchronous motor belongs to an induction-start permanent magnet synchronous motor, and its magnetic field system consists of one or more permanent magnets, usually inside a cage rotor made of cast aluminum or welded copper bars, with poles equipped with permanent magnets installed according to the required number of poles. The stator structure is similar to that of an induction motor.

[0003] Currently, the existing permanent magnet synchronous motors have a relatively complex structure and are rather cumbersome to assemble, thus increasing the labor intensity during the assembly of permanent magnet synchronous motors and reducing work efficiency. Moreover, the magnetic field provided by the existing permanent magnet synchronous motors is relatively weak, which will affect the rotation of the rotor, resulting in a relatively small torque of the motor. Therefore, it brings great trouble to people's use, so an axial-flux permanent magnet synchronous motor is needed. Summary of the Invention

[0004] The purpose of the present invention is to provide an axial-flux permanent magnet synchronous motor to solve the problems of the relatively complex structure and small torque of the existing permanent magnet synchronous motors mentioned in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An axial-flux permanent magnet synchronous motor includes a rotating shaft assembly and a wiring seat assembly. The surface of the rotating shaft assembly is sleeved with a rotor assembly, and the rotor assembly and the rotating shaft assembly are limited and matched with each other. On the surface of the rotating shaft assembly and on the upper and lower sides of the rotor assembly, a stator assembly is sleeved. After the stator assembly is energized, it cooperates with the rotor assembly to cause the rotating shaft assembly to rotate.

[0006] The rotor assembly includes a rotor frame, permanent magnets, and slip rings. The permanent magnets are uniformly distributed along the axis and fixed on the rotor frame, and the outer edges of the rotor frame and the permanent magnets are fixed by a slip ring for hoop fixation.

[0007] The stator assembly includes an upper stator group and a lower stator group. The upper stator group is arranged above the rotor assembly, and the lower stator group is arranged below the rotor assembly. When the lower stator group and the upper stator group are energized, a magnetic field is generated to cause the rotor assembly to rotate.

[0008] Preferably, the rotating shaft assembly includes a rotating shaft, an upper bearing, and a lower bearing. Two groups of upper bearings arranged side by side are sleeved on the surface of the top of the rotating shaft, and the outer ring of the upper bearing is fixed with an interference fit with the machine housing.

[0009] Preferably, two sets of lower bearings arranged side by side are sleeved on the surface of the bottom of the rotating shaft, and the outer ring of the lower bearing is in interference fit with the casing to achieve fixation, so as to ensure the stability of the support of the rotating shaft.

[0010] Preferably, a spline is provided on the surface of the top end of the rotating shaft, which facilitates the installation of the product to be rotated.

[0011] Preferably, a keyway is provided on the surface of the middle part of the rotating shaft, and convex strips are integrally provided on the inner walls of both sides of the rotor frame. When the rotor frame is installed on the rotating shaft, the convex strips of the rotor frame are located inside the keyway.

[0012] Preferably, both the upper stator group and the lower stator group are composed of a left stator frame, a right stator frame and windings. The left stator frame and the right stator frame are enclosed in a ring shape, and the left stator frame and the right stator frame are installed inside the casing.

[0013] Preferably, wire grooves are provided on the surfaces of the left stator frame and the right stator frame, and the windings are wound on the surfaces of the left stator frame and the right stator frame through the wire grooves.

[0014] Preferably, the terminal block assembly includes a terminal block, a U-phase terminal post, a V-phase terminal post and a W-phase terminal post. The terminal block is fixedly connected to the casing by four screws.

[0015] Preferably, the U-phase terminal post, the V-phase terminal post and the W-phase terminal post are sequentially installed from left to right on the surface of the terminal block. One ends of the U-phase terminal post, the V-phase terminal post and the W-phase terminal post penetrate through the terminal block and are electrically connected to the windings.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The axial flux permanent magnet synchronous motor is provided with a rotating shaft assembly, a rotor assembly, a stator assembly and a terminal block assembly; the mains power is connected through the terminal block assembly, and after wiring, the stator assembly is powered on. After the stator assembly is powered on, a magnetic field is formed, and the rotor assembly located in the magnetic field will rotate. When the rotor assembly rotates, it will drive the rotating shaft assembly to rotate; specifically, the motor controller is connected through the U-phase terminal post, the V-phase terminal post and the W-phase terminal post. After wiring, the windings are powered on. After the windings are powered on, a magnetic field is formed, and the permanent magnet located in the magnetic field will rotate. When rotating, it will drive the rotor frame to rotate, causing the rotor frame to drive the rotating shaft assembly to rotate; the structure of the present invention is simple and convenient for assembly. At the same time, the provided stator assembly increases the magnetic field strength and improves the torque of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional external structure schematic diagram of the present invention;

[0018] Figure 2 is a front view external structure schematic diagram of the present invention;

[0019] Figure 3 Schematic diagram of the local explosion structure of the present invention;

[0020] Figure 4 Enlarged schematic diagram of the shaft assembly of the present invention;

[0021] Figure 5 Enlarged schematic diagram of the rotor assembly of the present invention;

[0022] Figure 6 Enlarged schematic diagram of the stator assembly of the present invention;

[0023] Figure 7 Enlarged schematic diagram of the terminal block assembly of the present invention.

[0024] In the figure: 1. Shaft assembly; 11. Shaft; 111. Spline; 112. Keyway; 12. Upper bearing; 13. Lower bearing; 2. Rotor assembly; 21. Rotor frame; 22. Permanent magnet; 23. Slip ring; 3. Stator assembly; 31. Upper stator group; 32. Lower stator group; 300. Left stator frame; 310. Right stator frame; 320. Winding; 4. Terminal block assembly; 41. Terminal block; 42. U-phase terminal; 43. V-phase terminal; 44. W-phase terminal. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. In addition, the terms "first", "second", "third", "upper, lower, left, right", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. At the same time, in the description of the present invention, unless otherwise clearly defined and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] The structure of an axial-flux permanent magnet synchronous motor provided by the present invention is as Figure 1 and Figure 4As shown in the figure, it includes a rotating shaft assembly 1 and a wiring seat assembly 4. The rotating shaft assembly 1 includes a rotating shaft 11, an upper bearing 12 and a lower bearing 13. Two sets of upper bearings 12 arranged side by side are sleeved on the surface of the top of the rotating shaft 11, and the outer ring of the upper bearing 12 is in interference fit with the casing to achieve fixation. Two sets of lower bearings 13 arranged side by side are sleeved on the surface of the bottom of the rotating shaft 11, and the outer ring of the lower bearing 13 is in interference fit with the casing to achieve fixation, so as to ensure the stability of the support of the rotating shaft 11. A spline 111 is provided on the surface of the top end of the rotating shaft 11, and this spline 111 facilitates the installation of the product to be rotated.

[0027] During implementation, the rotor assembly 2 is sleeved on the surface of the rotating shaft 11 from below. When sleeving, the protrusions on the surface of the rotor frame 21 will be inserted into the key grooves 112 for positioning. Subsequently, the upper stator group 31 and the lower stator group 32 are sleeved above and below the rotor assembly 2 respectively. Then, two sets of upper bearings 12 and lower bearings 13 are installed at the upper and lower ends of the rotating shaft 11 respectively. After assembly, the whole is installed inside the casing.

[0028] Furthermore, as Figure 2 and Figure 5 shown in the figure, a rotor assembly 2 is sleeved on the surface of the rotating shaft assembly 1, and the rotor assembly 2 and the rotating shaft assembly 1 are in mutual limiting cooperation. The rotor assembly 2 includes a rotor frame 21, permanent magnets 22 and slip rings 23. The permanent magnets 22 are uniformly distributed along the axial direction and fixed on the rotor frame 21. The outer edges of the rotor frame 21 and the permanent magnets 22 are fixed by a slip ring 23 for hoop fixation; a key groove 112 is provided on the surface of the middle part of the rotating shaft 11. Protrusions are integrally provided on the inner walls on both sides of the rotor frame 21. When the rotor frame 21 and the rotating shaft 11 are installed, the protrusions of the rotor frame 21 are located inside the key groove 112.

[0029] During implementation, a plurality of permanent magnets 22 are inserted into the permanent magnets 22 in sequence. After insertion, the slip ring 23 is sleeved on the edges of the rotor frame 21 and the permanent magnets 22 for fixation.

[0030] Furthermore, as Figure 3 and Figure 6As shown in the figure, stator assemblies 3 are sleeved on the surface of the rotating shaft assembly 1 and located on the upper and lower sides of the rotor assembly 2. After the stator assemblies 3 are electrified, they cooperate with the rotor assembly 2 to cause the rotating shaft assembly 1 to rotate. The stator assembly 3 includes an upper stator group 31 and a lower stator group 32. The upper stator group 31 is arranged above the rotor assembly 2, and the lower stator group 32 is arranged below the rotor assembly 2. The lower stator group 32 and the upper stator group 31 are electrified to generate a magnetic field to cause the rotor assembly 2 to rotate. Both the upper stator group 31 and the lower stator group 32 are composed of a left stator frame 300, a right stator frame 310, and a winding 320. The left stator frame 300 and the right stator frame 310 enclose a ring shape. The left stator frame 300 and the right stator frame 310 are installed inside the casing. The surfaces of the left stator frame 300 and the right stator frame 310 are provided with wire grooves, and the winding 320 is wound on the surfaces of the left stator frame 300 and the right stator frame 310 through the wire grooves.

[0031] During implementation, the left stator frame 300 and the right stator frame 310 are butted and enclosed in a ring shape, and then the winding 320 is wound on the surfaces of the left stator frame 300 and the right stator frame 310.

[0032] Further, as Figure 3 and Figure 7 shown in the figure, the terminal block assembly 4 includes a terminal block 41, a U-phase terminal 42, a V-phase terminal 43, and a W-phase terminal 44. The terminal block 41 is fixedly connected to the casing by four screws. The U-phase terminal 42, the V-phase terminal 43, and the W-phase terminal 44 are sequentially installed on the surface of the terminal block 41 from left to right. One ends of the U-phase terminal 42, the V-phase terminal 43, and the W-phase terminal 44 penetrate the terminal block 41 and are electrically connected to the winding 320.

[0033] During implementation, the U-phase terminal 42, the V-phase terminal 43, and the W-phase terminal 44 are wired to the winding 320, and then the terminal block 41 is fixedly connected to the surface of the casing by screws.

[0034] In the specific use process of the present invention, the motor controller is connected through the U-phase terminal 42, the V-phase terminal 43, and the W-phase terminal 44. After wiring, the winding 320 will be electrified. After the winding 320 is electrified, a magnetic field is formed, and the permanent magnet 22 located in the magnetic field will rotate. When rotating, it will drive the rotor frame 21 to rotate, causing the rotor frame 21 to drive the rotating shaft assembly 1 to rotate.

[0035] Working principle: First, the rotor assembly 2 and the stator assembly 3 are assembled. When assembling the rotor assembly 2, multiple permanent magnets 22 are sequentially inserted into the permanent magnets 22. After insertion, the slip ring 23 is sleeved on the edges of the rotor frame 21 and the permanent magnet 22 for fixation; when assembling the stator assembly 3, the left stator frame 300 and the right stator frame 310 are butted and enclosed in a ring shape, and then the winding 320 is wound on the surfaces of the left stator frame 300 and the right stator frame 310.

[0036] Next, the rotor assembly 2 is sleeved on the surface of the rotating shaft 11 from below. When sleeving, the ribs on the surface of the rotor frame 21 will be inserted into the keyway 112 for positioning. Subsequently, the stator group 31 and the lower stator group 32 are sleeved above and below the rotor assembly 2 respectively. Then, two sets of upper bearings 12 and lower bearings 13 are installed at the upper and lower ends of the rotating shaft 11 respectively. After assembly, the whole is installed inside the machine shell. After installation, the U-phase terminal 42, the V-phase terminal 43 and the W-phase terminal 44 are connected to the winding 320. Finally, the terminal block 41 is fixedly connected to the surface of the machine shell by screws to complete the assembly.

[0037] During use, the motor controller is connected through the terminal block assembly 4. After wiring, the stator assembly 3 is powered on. After the stator assembly 3 is powered on, a magnetic field is formed, and the rotor assembly 2 located in the magnetic field will rotate. When the rotor assembly 2 rotates, it will drive the rotating shaft assembly 1 to rotate. Specifically, the motor controller is connected through the U-phase terminal 42, the V-phase terminal 43 and the W-phase terminal 44. After wiring, the winding 320 is powered on. After the winding 320 is powered on, a magnetic field is formed, and the permanent magnet 22 located in the magnetic field will rotate. When rotating, it will drive the rotor frame 21 to rotate, causing the rotor frame 21 to drive the rotating shaft assembly 1 to rotate.

[0038] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An axial flux permanent magnet synchronous motor, comprising a rotating shaft assembly (1) and a terminal block assembly (4), characterized in that: The surface of the rotating shaft assembly (1) is sleeved with a rotor assembly (2), and the rotor assembly (2) and the rotating shaft assembly (1) are limited and matched with each other; on the surface of the rotating shaft assembly (1) and on the upper and lower sides of the rotor assembly (2), a stator assembly (3) is sleeved, and after the stator assembly (3) is electrified, it cooperates with the rotor assembly (2) to cause the rotating shaft assembly (1) to rotate; The rotor assembly (2) includes a rotor frame (21), a permanent magnet (22) and a slip ring (23). The permanent magnets (22) are uniformly distributed along the axial direction and fixed on the rotor frame (21), and the outer edges of the rotor frame (21) and the permanent magnets (22) are fixed by a slip ring (23) through hoop fixation; The stator assembly (3) includes an upper stator group (31) and a lower stator group (32). The upper stator group (31) is arranged above the rotor assembly (2), and the lower stator group (32) is arranged below the rotor assembly (2). When the lower stator group (32) and the upper stator group (31) are electrified to generate a magnetic field, the rotor assembly (2) is caused to rotate.

2. The axial flux permanent magnet synchronous motor according to claim 1, characterized in that: The rotating shaft assembly (1) includes a rotating shaft (11), an upper bearing (12) and a lower bearing (13). On the surface of the top of the rotating shaft (11), two sets of upper bearings (12) arranged side by side are sleeved, and the outer ring of the upper bearing (12) is in interference fit with the machine shell to achieve fixation.

3. The axial flux permanent magnet synchronous motor according to claim 1, wherein: On the surface of the bottom of the rotating shaft (11), two sets of lower bearings (13) arranged side by side are sleeved, and the outer ring of the lower bearing (13) is in interference fit with the machine shell to achieve fixation, so as to ensure the stability of the support of the rotating shaft (11).

4. The axial flux permanent magnet synchronous motor according to claim 1, characterized in that: On the surface of the top end of the rotating shaft (11), a spline (111) is provided, and the spline (111) facilitates the installation of the product to be rotated.

5. The axial flux permanent magnet synchronous motor according to claim 1, wherein: On the surface of the middle part of the rotating shaft (11), a keyway (112) is provided. On the inner walls on both sides of the rotor frame (21), convex strips are integrally provided. When the rotor frame (21) and the rotating shaft (11) are installed, the convex strips of the rotor frame (21) are located inside the keyway (112).

6. The axial flux permanent magnet synchronous motor according to claim 1, characterized in that: The upper stator group (31) and the lower stator group (32) are both composed of a left stator frame (300), a right stator frame (310) and a winding (320). The left stator frame (300) and the right stator frame (310) are enclosed in a ring shape, and the left stator frame (300) and the right stator frame (310) are installed inside the machine shell.

7. The axial flux permanent magnet synchronous motor according to claim 6, characterized in that: On the surfaces of the left stator frame (300) and the right stator frame (310), wire grooves are provided, and the winding (320) is wound on the surfaces of the left stator frame (300) and the right stator frame (310) through the wire grooves.

8. The axial-flux permanent magnet synchronous motor according to claim 1, wherein: The terminal block assembly (4) includes a terminal block (41), a U-phase terminal (42), a V-phase terminal (43) and a W-phase terminal (44). The terminal block (41) is fixedly connected to the machine shell by four screws.

9. The axial flux permanent magnet synchronous motor according to claim 1, wherein: On the surface of the terminal block (41), a U-phase terminal (42), a V-phase terminal (43) and a W-phase terminal (44) are installed in sequence from left to right. One ends of the U-phase terminal (42), the V-phase terminal (43) and the W-phase terminal (44) penetrate through the terminal block (41) and are electrically connected to the winding (320).

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