A permanent magnet motor charging and demagnetization system and method

Abstract

The present invention discloses a permanent magnet motor demagnetization system and method, the demagnetization system comprises a permanent magnet motor body, a bottom plate, a transport component, a demagnetization component and a magnetization component, the transport component is arranged on the top of the bottom plate, the demagnetization component is arranged on the top of the transport component, and the magnetization component is arranged on the top of the bottom plate; the magnetization component comprises a magnetization frame fixedly mounted on the top of the bottom plate, an arc groove is provided on the top of the magnetization frame, a magnetization annular plate is fixedly mounted in the arc groove, a magnetization coil is wound on the outer surface of the magnetization annular plate, a positive plate is fixedly mounted on one end of the magnetization annular plate, a negative plate is fixedly mounted on the other end of the magnetization annular plate, the positive plate is connected to one end of the magnetization coil, the negative plate is connected to the other end of the magnetization coil, and a magnetization electric box is arranged on the front side of the magnetization frame. The present invention can magnetize the permanent magnet without taking it out of the permanent magnet motor body through the magnetization component arranged, thereby increasing the magnetization efficiency of the permanent magnet motor body by the demagnetization system.

Description

Technical Field

[0001] The present invention relates to the technical field of permanent magnet motor charging and demagnetization, and in particular to a permanent magnet motor charging and demagnetization system and method. Background Art

[0002] The permanent magnet system of a permanent magnet motor usually contains multiple pairs of poles, each of which is composed of the superposition of magnetic fields generated by one or more independent permanent magnets, and the permanent magnets are composed of a single or multiple permanent magnet blocks. Since permanent magnets have very strong magnetic forces, the installation of permanent magnets in permanent magnet motors has become a difficult problem. By using the overall magnetization technology, that is, first installing the unmagnetized magnetic blocks on the permanent magnet motor and then magnetizing them, the above problems can be solved to a certain extent. At present, there are mainly two overall magnetization methods in the manufacture of permanent magnet motors. The first is to use the stator winding magnetization, first assemble the rotor and stator equipped with unmagnetized permanent magnets, and then magnetize the unmagnetized permanent magnets in the permanent magnet motor into permanent magnets by passing the excitation current through the stator winding; the second is to use a special magnetization device, that is, first assemble the unmagnetized permanent magnets on the rotor, and then use a special magnetization device to magnetize the unmagnetized permanent magnets in the rotor into permanent magnets, and then assemble the rotor to the stator to form a complete permanent magnet motor.

[0003] For example, the patent application with application number CN202310244120.5 provides an in-situ integral demagnetization method for a permanent magnet motor, comprising the following steps: alternately inserting the pre-made insulating layer and the metal sheet along the air gap between the stator and the rotor of the assembled permanent magnet motor, and then placing them in the magnetic pole gap to be magnetized or demagnetized on the stator or rotor, the insulating layer and the metal sheet have the same size structure, and the insulating layer and the metal sheet are alternately stacked to form a coil; connecting the coil to a power supply, when the permanent magnet motor needs to be magnetized or supplemented with magnetism, current is passed through both ends of the coil, so that the direction of the magnetic field generated by the coil is the same as the magnetization direction of the magnetic pole to be magnetized; when the permanent magnet motor cannot be maintained by supplementing magnetism, the permanent magnet motor is demagnetized, and an AC attenuation current is passed through both ends of the coil. The present invention can effectively solve the problems of traditional magnetization of permanent magnets before stator and rotor assembly, difficulty in stator and rotor assembly, high maintenance cost and large pollution.

[0004] When the above-mentioned demagnetization method and the demagnetization method in the prior art are used, the permanent magnet motor end cover needs to be removed, the insulating layer and the metal sheet are alternately inserted into the magnetic pole gap to be demagnetized, and then the AC decay current is passed through the coil composed of the alternately stacked insulating layer and the metal sheet. The operation is relatively cumbersome, thereby reducing the demagnetization efficiency of the demagnetization method. Therefore, it is urgent to design a permanent magnet motor demagnetization system and method to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a permanent magnet motor charging and demagnetization system and method to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A permanent magnet motor demagnetization system, comprising a permanent magnet motor body, a bottom plate, a transport component, a demagnetization component and a magnetization component, wherein the transport component is arranged on the top of the bottom plate, the demagnetization component is arranged on the top of the transport component, and the magnetization component is arranged on the top of the bottom plate;

[0008] The magnetizing assembly includes a magnetizing frame fixedly mounted on the top of the base plate, an arc-shaped groove is provided on the top of the magnetizing frame, a magnetizing annular plate is fixedly mounted in the arc-shaped groove, a magnetizing coil is wound on the outer surface of the magnetizing annular plate, a positive plate is fixedly mounted on one end of the magnetizing annular plate, a negative plate is fixedly mounted on the other end of the magnetizing annular plate, the positive plate is connected to one end of the magnetizing coil, the negative plate is connected to the other end of the magnetizing coil, and a magnetizing electric box is arranged on the front side of the magnetizing frame.

[0009] The magnetizing assembly can be used to magnetize the permanent magnet without removing it from the permanent magnet motor body, thereby increasing the magnetizing efficiency of the permanent magnet motor body by the magnetizing and demagnetizing system.

[0010] Preferably, an L-shaped plate is fixedly installed on the front side of the magnetizing frame, a movable plate is slidably installed on the top of the L-shaped plate, a spring is fixedly installed between the movable plate and the magnetizing frame, a positive pole is fixedly installed on the rear side of the movable plate, a negative pole is fixedly installed on the rear side of the movable plate, a circular groove is opened on the front side of the L-shaped plate, a press plate is slidably installed in the circular groove, and the press plate is fixedly connected to the movable plate.

[0011] Preferably, a voltage controller is provided on the front side of the magnetizing frame, and the voltage controller is connected to the positive pole lead, and the voltage controller is connected to the negative pole lead.

[0012] Preferably, the transport assembly comprises a transport frame, a transport shaft, a transport belt, a transport motor and a system controller, and the transport frame is fixedly mounted on the top of the base plate.

[0013] Preferably, the transport shaft is rotatably installed between the transport frames, and the transport belt is sleeved between the transport shafts.

[0014] Preferably, the transport motor is fixedly installed on the front side of the transport frame, the transport motor is connected to the transport shaft, and the system controller is arranged on the front side of the transport frame.

[0015] Preferably, the demagnetization assembly includes a fixed plate, a support plate, a threaded column, a knob, a limit plate, a U-shaped iron core plate, a demagnetization annular plate, a demagnetization coil and a demagnetization electric box. The fixed plate is fixedly installed on the top of the transport frame, and the support plate is fixedly installed on the front side of the fixed plate.

[0016] Preferably, the threaded column is threadedly installed on the top of the support plate, the knob is fixedly installed on the top of the threaded column, a limiting groove is provided on the front side of the fixing plate, and the limiting plate is slidably installed in the limiting groove.

[0017] Preferably, the U-shaped iron core plate is fixedly installed on the front side of the limit plate, the U-shaped iron core plate is rotatably connected to the threaded column, the demagnetization annular plate is fixedly installed on one side of the U-shaped iron core plate, the demagnetization coil is wound on the outer surface of the demagnetization annular plate, and the demagnetization electric box is fixedly installed on the top of the demagnetization annular plate.

[0018] A permanent magnet motor charging and demagnetization method, comprising the permanent magnet motor charging and demagnetization system, further comprising the following steps:

[0019] S1: Twist the knob as needed to drive the threaded column to rotate, the threaded column drives the U-shaped iron core plate to move, and the U-shaped iron core plate drives the demagnetization ring plate to move to adjust its height;

[0020] S2: Place the permanent magnet motor body on the conveyor belt, start the conveyor motor and the demagnetization coil through the system controller, the conveyor motor drives the conveyor belt to rotate through the conveyor shaft, and the conveyor belt drives the permanent magnet motor body to move;

[0021] S3: When the permanent magnet motor body moves under the U-shaped iron core plate, the demagnetization coil cooperates with the U-shaped iron core plate to form an opposite magnetic field, which disrupts the magnetic field of the permanent magnet in the permanent magnet motor body, so that the permanent magnet in the permanent magnet motor body is demagnetized;

[0022] S4: When the conveyor belt drives the demagnetized permanent magnet motor body to move into the magnetizing coil, the demagnetizing coil is closed to prevent its magnetic field from affecting the magnetic field of the magnetizing coil, and the conveyor motor is closed to allow the demagnetized permanent magnet motor body to stay in the magnetizing coil;

[0023] S5: According to actual needs, the voltage controller is used to adjust the magnetic attraction of the magnetizing coil to the permanent magnet. After the voltage controller is adjusted, press the button to drive the moving plate to move. The moving plate squeezes the spring, and the moving plate drives the positive pole and the negative pole to move so that they are in short contact with the positive plate and the negative plate, so that the magnetizing coil forms a short magnetic field. The magnetic field of the magnetizing coil makes the magnetic field of the permanent magnet in the permanent magnet motor body face in the same direction, thereby magnetizing it. After the permanent magnet in the permanent magnet motor body is magnetized, refer to the above operation and start the transport motor to drive the magnetized permanent magnet motor body to move through the transport belt.

[0024] In the above technical solution, the present invention provides a permanent magnet motor charging and demagnetization system and method, which has the following beneficial effects:

[0025] 1. The magnetizing assembly can be used to magnetize the permanent magnet without removing it from the permanent magnet motor body, thereby increasing the magnetizing efficiency of the permanent magnet motor body by the magnetizing and demagnetizing system.

[0026] 2. The permanent magnet motor body is driven to move by the provided transport assembly, thereby improving the stability of the permanent magnet motor body when the charging and demagnetization system is magnetizing the permanent magnet motor body.

[0027] 3. The demagnetization component can be used to demagnetize the permanent magnet without removing it from the permanent magnet motor body, thereby improving the demagnetization efficiency of the permanent magnet motor body by the demagnetization system. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0029] Figure 1 A flowchart is provided for an embodiment of a permanent magnet motor charging and demagnetization system and method of the present invention.

[0030] Figure 2 A schematic diagram of the structure of a permanent magnet motor charging and demagnetization system is provided in accordance with an embodiment of the present invention.

[0031] Figure 3 A schematic diagram of the structure of a transport component provided in an embodiment of a permanent magnet motor charging and demagnetization system and method of the present invention.

[0032] Figure 4 A schematic diagram of the structure of a demagnetization component provided in an embodiment of a permanent magnet motor charging and demagnetization system and method of the present invention.

[0033] Figure 5A schematic diagram of the structure of a magnetizing component provided in an embodiment of a permanent magnet motor magnetizing and demagnetizing system and method of the present invention.

[0034] Description of reference numerals:

[0035] 1. Permanent magnet motor body; 2. Bottom plate; 3. Transport assembly; 4. Demagnetization assembly; 5. Magnetization assembly; 6. Magnetization frame; 7. Arc groove; 8. Magnetization annular plate; 9. Magnetization coil; 10. Positive plate; 11. Negative plate; 12. Magnetization electric box; 13. L-shaped plate; 14. Moving plate; 15. Spring; 16. Positive pole; 17. Negative pole; 18. Circular groove; 19. Press plate; 20. Voltage controller; 21. Transport frame; 22. Transport shaft; 23. Transport belt; 24. Transport motor; 25. System controller; 26. Fixed plate; 27. Support plate; 28. Threaded column; 29. ​​Knob; 30. Limit plate; 31. U-shaped core plate; 32. Demagnetization annular plate; 33. Demagnetization coil; 34. Demagnetization electric box; 35. Limit groove. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0037] like Figure 1-5 As shown, a permanent magnet motor charging and demagnetization system provided by an embodiment of the present invention comprises a permanent magnet motor body 1, a base plate 2, a transport component 3, a demagnetization component 4 and a magnetization component 5, wherein the transport component 3 is arranged on the top of the base plate 2, the demagnetization component 4 is arranged on the top of the transport component 3, and the magnetization component 5 is arranged on the top of the base plate 2;

[0038] The magnetizing assembly 5 includes a magnetizing frame 6 fixedly mounted on the top of the base plate 2, an arc-shaped groove 7 is opened on the top of the magnetizing frame 6, a magnetizing annular plate 8 is fixedly mounted in the arc-shaped groove 7, a magnetizing coil 9 is wound around the outer surface of the magnetizing annular plate 8, a positive plate 10 is fixedly mounted on one end of the magnetizing annular plate 8, a negative plate 11 is fixedly mounted on the other end of the magnetizing annular plate 8, the positive plate 10 is connected to one end of the magnetizing coil 9, the negative plate 11 is connected to the other end of the magnetizing coil 9, and a magnetizing electric box 12 is arranged on the front side of the magnetizing frame 6.

[0039] The magnetizing assembly 5 can be provided to magnetize the permanent magnet without removing it from the permanent magnet motor body 1 , thereby increasing the magnetizing efficiency of the permanent magnet motor body 1 by the magnetizing and demagnetizing system.

[0040] Reference Figure 5In this embodiment, an L-shaped plate 13 is fixedly installed on the front side of the magnetizing frame 6, a movable plate 14 is slidably installed on the top of the L-shaped plate 13, a spring 15 is fixedly installed between the movable plate 14 and the magnetizing frame 6, a positive pole 16 is fixedly installed on the rear side of the movable plate 14, a negative pole 17 is fixedly installed on the rear side of the movable plate 14, a circular groove 18 is opened on the front side of the L-shaped plate 13, a pressing plate 19 is slidably installed in the circular groove 18, and the pressing plate 19 is fixedly connected to the movable plate 14.

[0041] The movable plate 14 can drive the positive pole 16 and the negative pole 17 to move so as to make them temporarily contact with the positive plate 10 and the negative plate 11 , thereby magnetizing the permanent magnets in the permanent magnet motor body 1 through the magnetizing coil 9 .

[0042] A voltage controller 20 is provided on the front side of the magnetizing frame 6 . The voltage controller 20 is connected to the positive pole 16 by a wire. The voltage controller 20 is connected to the negative pole 17 by a wire.

[0043] The voltage controller 20 can be set to facilitate the staff to control the voltage of the magnetizing coil 9, so as to adjust the magnetic attraction strength of the magnetizing coil 9 on the permanent magnet.

[0044] Reference Figure 3 The transport component 3 of this embodiment includes a transport frame 21, a transport shaft 22, a transport belt 23, a transport motor 24 and a system controller 25. The transport frame 21 is fixedly installed on the top of the base plate 2.

[0045] The permanent magnet motor body 1 is driven to move by the provided transport assembly 3, thereby improving the stability of the permanent magnet motor body 1 when the magnetizing and demagnetizing system is magnetizing the permanent magnet motor body 1.

[0046] The transport shaft 22 is rotatably installed between the transport frames 21 , and the transport belt 23 is sleeved between the transport shafts 22 .

[0047] The transport motor 24 is fixedly installed on the front side of the transport frame 21 . The transport motor 24 is connected to the transport shaft 22 . The system controller 25 is arranged on the front side of the transport frame 21 .

[0048] The system controller 25 can be set up to facilitate the staff to control the charging and demagnetization system.

[0049] Reference Figure 4 The demagnetization assembly 4 of this embodiment includes a fixed plate 26, a support plate 27, a threaded column 28, a knob 29, a limit plate 30, a U-shaped iron core plate 31, a demagnetization annular plate 32, a demagnetization coil 33 and a demagnetization electric box 34. The fixed plate 26 is fixedly installed on the top of the transport frame 21, and the support plate 27 is fixedly installed on the front side of the fixed plate 26.

[0050] The demagnetization component 4 can be provided to demagnetize the permanent magnet without removing it from the permanent magnet motor body 1 , thereby improving the demagnetization efficiency of the permanent magnet motor body 1 by the demagnetization system.

[0051] The threaded column 28 is threadedly installed on the top of the support plate 27 , the knob 29 is fixedly installed on the top of the threaded column 28 , a limiting groove 35 is defined on the front side of the fixing plate 26 , and the limiting plate 30 is slidably installed in the limiting groove 35 .

[0052] The limiting groove 35 can limit the limiting plate 30, thereby increasing the stability of the U-shaped core plate 31 when moving.

[0053] The U-shaped core plate 31 is fixedly mounted on the front side of the limit plate 30, the U-shaped core plate 31 is rotatably connected to the threaded column 28, the demagnetization annular plate 32 is fixedly mounted on one side of the U-shaped core plate 31, the demagnetization coil 33 is wound around the outer surface of the demagnetization annular plate 32, and the demagnetization electric box 34 is fixedly mounted on the top of the demagnetization annular plate 32.

[0054] The U-shaped iron core plate 31 can cooperate with the demagnetization coil 33 to demagnetize the permanent magnets in the permanent magnet motor body 1 .

[0055] A permanent magnet motor charging and demagnetization method, comprising the permanent magnet motor charging and demagnetization system, further comprising the following steps:

[0056] S1: Twist the knob 29 as needed to drive the threaded column 28 to rotate, the threaded column 28 drives the U-shaped core plate 31 to move, and the U-shaped core plate 31 drives the demagnetization annular plate 32 to move to adjust its height;

[0057] S2: placing the permanent magnet motor body 1 on the conveyor belt 23, starting the conveyor motor 24 and the demagnetization coil 33 through the system controller 25, the conveyor motor 24 drives the conveyor belt 23 to rotate through the conveyor shaft 22, and the conveyor belt 23 drives the permanent magnet motor body 1 to move;

[0058] S3: When the permanent magnet motor body 1 moves under the U-shaped iron core plate 31, the demagnetization coil 33 cooperates with the U-shaped iron core plate 31 to form an opposite magnetic field, and the opposite magnetic field disrupts the magnetic field of the permanent magnet in the permanent magnet motor body 1, so that the permanent magnet in the permanent magnet motor body 1 is demagnetized;

[0059] S4: When the conveyor belt 23 drives the demagnetized permanent magnet motor body 1 to move into the magnetizing coil 9, the demagnetizing coil 33 is closed to prevent its magnetic field from affecting the magnetic field of the magnetizing coil 9, and the conveyor motor 24 is closed to make the demagnetized permanent magnet motor body 1 stay in the magnetizing coil 9;

[0060] S5: According to actual needs, the magnetic attraction strength of the magnetizing coil 9 for magnetizing the permanent magnet is adjusted through the voltage controller 20. After the adjustment of the voltage controller 20 is completed, the button 19 is pressed, and the button 19 drives the movable plate 14 to move. The movable plate 14 squeezes the spring 15, and the movable plate 14 drives the positive pole 16 and the negative pole 17 to move so that they are in short contact with the positive plate 10 and the negative plate 11, so that the magnetizing coil 9 forms a short magnetic field. The magnetic field of the magnetizing coil 9 makes the magnetic field of the permanent magnet in the permanent magnet motor body 1 face in the same direction, thereby magnetizing it. After the permanent magnet in the permanent magnet motor body 1 is magnetized, refer to the above operation and start the transport motor 24 to drive the magnetized permanent magnet motor body 1 to move through the transport belt 23.

[0061] Working principle: twist the knob 29 as needed to drive the threaded column 28 to rotate, the threaded column 28 drives the U-shaped iron core plate 31 to move, the U-shaped iron core plate 31 drives the demagnetization ring plate 32 to move, and adjust its height; place the permanent magnet motor body 1 on the conveyor belt 23, start the conveyor motor 24 and the demagnetization coil 33 through the system controller 25, the conveyor motor 24 drives the conveyor belt 23 to rotate through the conveyor shaft 22, and the conveyor belt 23 drives the permanent magnet motor body 1 to move; the permanent magnet motor When the main body 1 moves under the U-shaped iron core plate 31, the demagnetization coil 33 cooperates with the U-shaped iron core plate 31 to form an opposite magnetic field, and the opposite magnetic field disrupts the magnetic field of the permanent magnet in the permanent magnet motor main body 1, so that the permanent magnet in the permanent magnet motor main body 1 is demagnetized; when the conveyor belt 23 drives the demagnetized permanent magnet motor main body 1 to move into the magnetizing coil 9, the demagnetization coil 33 is closed to prevent its magnetic field from affecting the magnetic field of the magnetizing coil 9, and the conveyor motor 24 is closed to make the demagnetized permanent magnet motor main body 1 stay in the magnetizing coil 9;

[0062] According to actual needs, the voltage controller 20 is used to adjust the magnetic attraction of the magnetizing coil 9 to the permanent magnet. After the adjustment of the voltage controller 20 is completed, the button 19 is pressed, and the button 19 drives the movable plate 14 to move. The movable plate 14 squeezes the spring 15, and the movable plate 14 drives the positive pole 16 and the negative pole 17 to move so that they are in short contact with the positive plate 10 and the negative plate 11, so that the magnetizing coil 9 forms a short magnetic field. The magnetic field of the magnetizing coil 9 makes the magnetic field of the permanent magnet in the permanent magnet motor body 1 face in the same direction, thereby magnetizing it. After the permanent magnet in the permanent magnet motor body 1 is magnetized, refer to the above operation and start the transport motor 24 to drive the magnetized permanent magnet motor body 1 to move through the transport belt 23.

[0063] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A permanent magnet motor charging and demagnetization system, comprising a permanent magnet motor body (1), a base plate (2), a transport component (3), a demagnetization component (4) and a magnetization component (5), characterized in that: The transport component (3) is arranged on the top of the bottom plate (2), the demagnetization component (4) is arranged on the top of the transport component (3), and the magnetization component (5) is arranged on the top of the bottom plate (2); The magnetizing assembly (5) comprises a magnetizing frame (6) fixedly mounted on the top of the bottom plate (2), an arc-shaped groove (7) being provided on the top of the magnetizing frame (6), a magnetizing annular plate (8) being fixedly mounted in the arc-shaped groove (7), a magnetizing coil (9) being wound around the outer surface of the magnetizing annular plate (8), a positive plate (10) being fixedly mounted on one end of the magnetizing annular plate (8), a negative plate (11) being fixedly mounted on the other end of the magnetizing annular plate (8), the positive plate (10) being connected to one end of the magnetizing coil (9), the negative plate (11) being connected to the other end of the magnetizing coil (9), and a magnetizing electric box (12) being provided on the front side of the magnetizing frame (6); An L-shaped plate (13) is fixedly mounted on the front side of the magnetizing frame (6), a movable plate (14) is slidably mounted on the top of the L-shaped plate (13), a spring (15) is fixedly mounted between the movable plate (14) and the magnetizing frame (6), a positive pole (16) is fixedly mounted on the rear side of the movable plate (14), a negative pole (17) is fixedly mounted on the rear side of the movable plate (14), a circular groove (18) is provided on the front side of the L-shaped plate (13), a pressing plate (19) is slidably mounted in the circular groove (18), and the pressing plate (19) is fixedly connected to the movable plate (14); A voltage controller (20) is arranged on the front side of the magnetizing frame (6), the voltage controller (20) is connected to a wire of the positive pole (16), and the voltage controller (20) is connected to a wire of the negative pole (17); The transport assembly (3) comprises a transport frame (21), a transport shaft (22), a transport belt (23), a transport motor (24) and a system controller (25); the transport frame (21) is fixedly mounted on the top of the base plate (2); The demagnetization component (4) comprises a fixing plate (26), a supporting plate (27), a threaded column (28), a knob (29), a limiting plate (30), a U-shaped iron core plate (31), a demagnetization annular plate (32), a demagnetization coil (33) and a demagnetization electric box (34), wherein the fixing plate (26) is fixedly mounted on the top of the transport frame (21), and the supporting plate (27) is fixedly mounted on the front side of the fixing plate (26); Also included is a permanent magnet motor charging and demagnetization method, comprising the following steps: S1: As required, the knob (29) is twisted to drive the threaded column (28) to rotate, the threaded column (28) drives the U-shaped iron core plate (31) to move, and the U-shaped iron core plate (31) drives the demagnetization annular plate (32) to move to adjust its height; S2: placing the permanent magnet motor body (1) on the conveyor belt (23), starting the conveyor motor (24) and the demagnetization coil (33) through the system controller (25), the conveyor motor (24) drives the conveyor belt (23) to rotate through the conveyor shaft (22), and the conveyor belt (23) drives the permanent magnet motor body (1) to move; S3: When the permanent magnet motor body (1) moves below the U-shaped iron core plate (31), the demagnetization coil (33) cooperates with the U-shaped iron core plate (31) to form an opposite magnetic field, and the opposite magnetic field disrupts the magnetic field of the permanent magnet in the permanent magnet motor body (1), so that the permanent magnet in the permanent magnet motor body (1) is demagnetized; S4: when the conveyor belt (23) drives the demagnetized permanent magnet motor body (1) to move into the magnetizing coil (9), the demagnetizing coil (33) is closed to prevent its magnetic field from affecting the magnetic field of the magnetizing coil (9), and the conveyor motor (24) is closed to allow the demagnetized permanent magnet motor body (1) to stay in the magnetizing coil (9); S5: According to actual needs, the magnetic attraction of the magnetizing coil (9) to the permanent magnet is adjusted by the voltage controller (20). After the adjustment of the voltage controller (20) is completed, the pressing plate (19) is pressed, and the pressing plate (19) drives the moving plate (14) to move. The moving plate (14) presses the spring (15). The moving plate (14) drives the positive pole column (16) and the negative pole column (17) to move so that they are in short contact with the positive plate (10) and the negative plate (11), so that the magnetizing coil (9) forms a short magnetic field. The magnetic field of the magnetizing coil (9) makes the magnetic field of the permanent magnet in the permanent magnet motor body (1) face the same direction, thereby magnetizing it. After the magnetization of the permanent magnet in the permanent magnet motor body (1) is completed, the transport motor (24) is started by the system controller (25). The transport motor (24) drives the transport belt (23) to rotate through the transport shaft (22), and the transport belt (23) drives the permanent magnet motor body (1) to move.

2. A permanent magnet motor charging and demagnetization system according to claim 1, characterized in that: The transport shaft (22) is rotatably mounted between the transport frames (21), and the transport belt (23) is sleeved between the transport shafts (22).

3. A permanent magnet motor charging and demagnetization system according to claim 1, characterized in that: The transport motor (24) is fixedly mounted on the front side of the transport frame (21), the transport motor (24) is connected to the transport shaft (22), and the system controller (25) is arranged on the front side of the transport frame (21).

4. A permanent magnet motor charging and demagnetization system according to claim 1, characterized in that: The threaded column (28) is threadedly mounted on the top of the support plate (27), the knob (29) is fixedly mounted on the top of the threaded column (28), a limiting groove (35) is provided on the front side of the fixing plate (26), and the limiting plate (30) is slidably mounted in the limiting groove (35).

5. A permanent magnet motor charging and demagnetization system according to claim 1, characterized in that: The U-shaped iron core plate (31) is fixedly mounted on the front side of the limit plate (30), the U-shaped iron core plate (31) is rotatably connected to the threaded column (28), the demagnetization annular plate (32) is fixedly mounted on one side of the U-shaped iron core plate (31), the demagnetization coil (33) is wound on the outer surface of the demagnetization annular plate (32), and the demagnetization electric box (34) is fixedly mounted on the top of the demagnetization annular plate (32).

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