Combined permanent magnet self-inductance generator motor

Abstract

The utility model discloses a combined permanent magnet self-inductance generator motor which is composed of a disc-type stator, a radial stator, a permanent magnet rotor, a power switch control system and a power generation switch control system. The disc type stator generates clockwise torque force on the permanent magnet rotor in the axial magnetic field direction, and the radial stator also generates clockwise torque force on the permanent magnet rotor in the radial magnetic field direction. And electric energy generated by the disc-type stator winding iron core, the radial stator winding iron core and the winding opposite to the permanent magnet rotor due to power-off self-inductance is guided to a battery or other electric equipment by closing the solid-state relay II. Therefore, compared with a single disc type or radial type permanent magnet self-inductance generator motor, the permanent magnet rotor has larger torque force, and the stator winding converts magnetic field energy into electric energy to be output, so that the permanent magnet energy is higher in utilization rate. If the device is installed on an electric automobile, the cruising ability of the electric automobile is greatly improved, and the battery consumption is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of permanent magnet motor technology, specifically a combined permanent magnet self-induction generator motor. Background Technology

[0002] During operation, permanent magnet motors generate a self-induced electromotive force (EMF) (i.e., back EMF) due to changes in the stator winding current. This energy is typically dissipated as heat through the winding resistance. Existing technologies show that the self-induced EMF generated by a permanent magnet motor can be recovered as electrical energy through power electronic devices (such as inverters) and energy storage systems. For example, during braking, the motor switches to generator mode, and the inverter reverses the current direction, converting mechanical energy into electrical energy stored in a battery or supercapacitor (Application of permanent magnet synchronous motors in braking energy recovery of pure electric commercial vehicles, Automotive Test Network). Other patented technologies show that by designing a gapless stator winding combined with a full-bridge switching circuit, the self-induced current can be recovered in real time to a capacitor or battery. For example, when the rotor interacts with the stator magnetic field, the back EMF generated by the switching of the coils is stored through diodes and capacitors, achieving efficient energy recovery (CN1299178A, CN211239622U). However, all of the above technologies involve relying on external electrical components or circuit designs to achieve energy recovery, resulting in complex structures and cumbersome energy recovery processes.

[0003] Based on the above, the applicant has developed a permanent magnet radial self-inductance generator motor and a permanent magnet disk self-inductance generator motor, respectively. Through a unique arrangement of the stator and permanent magnet rotor, combined with a power switch control system and a power generation control switch built into the motor itself, the self-induced electromotive force generated by the permanent magnet motor is converted into electrical energy and guided to a rechargeable battery or other electrical equipment, achieving the recycling and utilization of the self-induced electromotive force. However, a single-stator permanent magnet self-inductance generator motor suffers from problems such as relatively small stator torque and insufficient utilization of the permanent magnet's magnetic energy. Utility Model Content

[0004] The purpose of this utility model is to solve the technical problems of complex structure and cumbersome process of energy recovery in existing permanent magnet motors, and the low efficiency of permanent magnet energy conversion and utilization in the permanent magnet radial self-inductance generator motor and permanent magnet disk self-inductance generator motor independently developed by the applicant. It provides a combined permanent magnet self-inductance generator motor, which realizes the maximum utilization of permanent magnet energy by complementing the advantages of disk stator and radial stator to recover energy.

[0005] To achieve its purpose, this utility model adopts the following technical solution:

[0006] A combined permanent magnet self-inductance generator motor includes a motor body, at least one set of stators and permanent magnet rotors, a power switch control system and a generator control switch;

[0007] The machine body is in the shape of a horizontal cylinder, and the power switch control system and the power generation control switch are installed on the top of the machine body;

[0008] The stator includes a disc stator and a radial stator. The radial stator is a horizontal cylindrical shape and is tightly installed in the inner cavity of the machine body. The radial stator has radial stator winding cores and radial stator unwinding cores spaced apart inside. The surface of the radial stator unwinding core is provided with permanent magnet patches. The disc stator includes a left stator and a right stator with the same structure. The left stator and the right stator are coaxial with the machine body, symmetrically arranged at both ends of the outer periphery of the permanent magnet rotor, and tightly installed in the inner cavity of the radial stator. The left stator and the right stator have a sawtooth structure on opposite sides. The disc stator winding core is located in the groove of the sawtooth structure, and the disc stator unwinding core is located on the platform of the sawtooth structure. The surface of the disc stator unwinding core is provided with disc stator permanent magnet patches of the same polarity.

[0009] The permanent magnet rotor is installed in the radial stator cavity and includes a rotor shaft. A permanent magnet rotor assembly is sleeved outside the rotor shaft. Several permanent magnet blocks are symmetrically arranged on the outer periphery of the permanent magnet rotor assembly. A non-magnetic protective disk for the permanent magnet blocks is provided at both ends of the permanent magnet blocks along the axis of the permanent magnet rotor assembly.

[0010] The power generation control switch includes solid-state relay I and solid-state relay II;

[0011] The power switch control system includes a circuit control board, a positive power supply terminal, and a negative power supply terminal. The circuit control board is electrically connected to the permanent magnet rotor detection position via an optical medium detection signal line. The positive power supply terminal is electrically connected to the input terminals of the circuit control board and solid-state relay I. The output terminal of the circuit control board is electrically connected to the input terminals of solid-state relay I and solid-state relay II, as well as the negative power supply terminal. The output terminal of solid-state relay I is electrically connected to solid-state relay II and the input terminal of the motor stator winding. The input terminal of solid-state relay II is electrically connected to the input terminal of the rechargeable battery. The output terminals of the motor stator winding and the rechargeable battery are electrically connected to the negative power supply terminal.

[0012] As a further preferred embodiment of the present invention, the axial gap between the permanent magnet patch of the disc stator and the permanent magnet rotor is ≥5mm.

[0013] Furthermore, the gap between the radial stator inner cavity and the outer wall of the non-magnetic protective disk of the rotor permanent magnet block is 1mm.

[0014] Furthermore, the two ends of the rotor shaft are respectively inserted into the flange holes of the left flange and the right flange, and the left flange and the right flange are respectively fastened to the two ends of the machine body.

[0015] Furthermore, a left flange bearing is provided in the flange hole of the left flange, and a right flange bearing is provided in the flange hole of the right flange. The two ends of the rotor shaft are respectively inserted into the bearing holes of the left flange bearing and the right flange bearing.

[0016] Furthermore, a left bearing end cover is provided on the outer side of the left flange bearing, and a right bearing end cover is provided on the outer side of the right flange bearing. The left and right flanges are respectively fastened to both ends of the machine body by fastening bolts.

[0017] Furthermore, the permanent magnet blocks are vertically installed along the rotor shaft axis between two adjacent permanent magnet blocks and their non-magnetic protective disks, with the magnetic field direction of each permanent magnet block facing the rotor shaft direction.

[0018] Furthermore, the working surface width of the radial stator winding core is equal to that of the disc stator winding core, and the width of the permanent magnet patch is equal to that of the same polarity permanent magnet patch.

[0019] Furthermore, the winding cores and unwinding cores of the disc stator and radial stator are all made in equal pairs of 2, 4, 6, 8...N, or 2, 3, 4, 5, 6, 7...N.

[0020] Furthermore, when the winding cores and unwinding cores are manufactured in pairs of 2, 4, 6, 8...N, the number of permanent magnet blocks is 2, 4, 6, 8...N; when the winding cores and unwinding cores are manufactured in pairs of 2, 3, 4, 5, 6, 7...N, the number of permanent magnet blocks is 2, 3, 4, 5, 6, 7...N.

[0021] Compared with single-disc or radial permanent magnet self-inductance generator motors, the advantages of this invention are as follows:

[0022] This invention comprises a disc stator, a radial stator, a permanent magnet rotor, a power switch control system, and a generator switch control system. The disc stator generates a clockwise torque force on the permanent magnet rotor in the axial magnetic field direction, and the radial stator also generates a clockwise torque force on the permanent magnet rotor in the radial magnetic field direction. Simultaneously, the electrical energy generated by the self-induction of the disc stator winding core, the radial stator winding core, and the windings opposite to the permanent magnet rotor due to power failure is guided to the rechargeable battery or other electrical equipment via the closing of solid-state relay II. Therefore, the permanent magnet rotor achieves a greater torque force compared to a single disc or radial permanent magnet self-inductance generator motor, and the stator windings convert magnetic field energy into electrical energy output, resulting in higher utilization of permanent magnet energy. If installed in an electric vehicle, it will significantly improve the electric vehicle's range and reduce battery usage. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the combined permanent magnet self-inductance generator motor of this utility model;

[0024] Figure 2 This is a schematic diagram of the radial stator in the combined permanent magnet self-inductance generator motor of this utility model;

[0025] Figure 3 This is a schematic diagram of the composition of the disc-type stator in the combined permanent magnet self-inductor generator motor of this utility model;

[0026] Figure 4 This is a schematic diagram of the rotor composition in the combined permanent magnet self-inductance generator motor of this utility model;

[0027] Figure 5 This is a schematic diagram of the working principle of the combined permanent magnet self-inductance generator motor of this utility model;

[0028] Figure 6 This is a schematic diagram of the circuit connection between the power switch control system and the generator control switch of this utility model;

[0029] Reference numerals: 1. Fastening bolt, 2. Left bearing end cover, 3. Left flange bearing, 4. Left flange, 5. Right flange, 6. Right flange bearing, 7. Right bearing end cover, 8. Disc stator, 9. Permanent magnet rotor, 10. Radial stator, 12. Power switch control system, 13. Machine body, 14. Generator control switch, 15. Permanent magnet patch, 16. Radial stator winding core, 17. Radial stator unwinding core, 18. Same polarity permanent magnet patch, 19. Disc stator unwinding core, 20. Disc stator winding core, 21. Permanent magnet rotor assembly, 22. Rotor shaft, 23. Non-magnetic protective disc for permanent magnet block, 24. Permanent magnet block. Detailed Implementation

[0030] The structure and working principle of the permanent magnet radial self-inductance generator motor of this utility model will be described in detail below with reference to the accompanying drawings.

[0031] like Figure 1-6 As shown, the present invention provides a combined permanent magnet self-inductance generator motor, including a body 13, a set of stators and permanent magnet rotors 9, a power switch control system 12 and a power generation control switch 14. The body 13 is in the shape of a horizontal cylinder, and the power switch control system 12 and the power generation control switch 14 are mounted on the top of the body 13. The stator includes a disc stator 8 and a radial stator 10. The radial stator 10 is a horizontal cylindrical shape and is tightly installed in the inner cavity of the body 13. The radial stator 10 has a radial stator winding core 16 and a radial stator unwinding core 17 spaced apart inside. The surface of the radial stator unwinding core 17 is provided with permanent magnet patches 15. The disc stator 8 includes a left stator and a right stator with the same structure. The left stator and the right stator are coaxial with the body 13, symmetrically arranged at both ends of the outer periphery of the permanent magnet rotor 9, and tightly installed in the inner cavity of the radial stator 10. The left stator and the right stator have a sawtooth structure on opposite sides. The sawtooth structure groove is provided with a disc stator winding core 20. The sawtooth structure platform is provided with a disc stator unwinding core 19. The surface of the disc stator unwinding core 19 is provided with disc stator same polarity permanent magnet patches 18.

[0032] The permanent magnet rotor 9 is installed in the inner cavity of the radial stator 10. It includes a rotor shaft 22. A permanent magnet rotor assembly 21 is sleeved on the outside of the rotor shaft 22. A plurality of permanent magnet blocks 24 are symmetrically arranged on the outer periphery of the permanent magnet rotor assembly 21. A non-magnetic protective disk 23 for the permanent magnet blocks 24 is provided at both ends along the axial direction of the permanent magnet rotor assembly 21.

[0033] The power generation control switch 14 includes solid-state relay I and solid-state relay II;

[0034] The power switch control system 12 includes a circuit control board, a positive power supply terminal, and a negative power supply terminal. The circuit control board is electrically connected to the permanent magnet rotor 9 to detect its position via an optical medium detection signal line. The positive power supply terminal is electrically connected to the input terminals of the circuit control board and solid-state relay I. The output terminal of the circuit control board is electrically connected to the input terminals of solid-state relay I and solid-state relay II, as well as the negative power supply terminal. The output terminal of solid-state relay I is electrically connected to solid-state relay II and the input terminal of the motor stator winding. The input terminal of solid-state relay II is electrically connected to the input terminal of the rechargeable battery. The output terminals of the motor stator winding and the rechargeable battery are electrically connected to the negative power supply terminal.

[0035] Specifically, the axial gap between the same polarity permanent magnet patch 18 of the disc stator 8 and the permanent magnet rotor 9 is ≥5mm. The gap between the inner cavity of the radial stator 10 and the outer wall of the non-magnetic protective disk 23 of the rotor permanent magnet block is 1mm.

[0036] Specifically, the rotor shaft 22 is inserted into the flange holes of the left flange 4 and the right flange 5, respectively, and the left flange 4 and the right flange 5 are fastened to both ends of the machine body 13. A left flange bearing 3 is installed in the flange hole of the left flange 4, and a right flange bearing 6 is installed in the flange hole of the right flange 5. The rotor shaft 22 is inserted into the bearing holes of the left flange bearing 3 and the right flange bearing 6, respectively. A left bearing end cover 2 is provided on the outside of the left flange bearing 3, and a right bearing end cover 7 is provided on the outside of the right flange bearing 5. The left flange 4 and the right flange 5 are fastened to both ends of the machine body 13 by fastening bolts 1.

[0037] The permanent magnet block 24 is installed vertically along the rotor shaft 22 between two adjacent permanent magnet blocks and the non-magnetic protective disk 23. The magnetic field direction of each permanent magnet block 24 is towards the rotor shaft 22.

[0038] The radial stator winding core 16 and the disc stator winding core 20 have the same working surface width, and the permanent magnet patch 15 and the same polarity permanent magnet patch 18 have the same width.

[0039] In this utility model, the winding cores and unwinding cores of the disc stator 8 and the radial stator 10 are made equally, and the number of permanent magnet blocks 24 is 2, 4, 6, 8, 10...N.

[0040] Reference Figure 5 The working principle of this utility model is as follows: Figure 5 (a) In the de-energized mode, the stator winding core (radial stator winding core 16, disc stator winding core 20) is magnetized by the N pole of the permanent magnet patches (permanent magnet patch 15, same polarity permanent magnet patch 18), forming a closed magnetic circuit NS. That is, the working surface of the stator winding core displays the S pole. At this time, the left S pole of the rotor permanent magnet block 24 is repelled by the S pole of the stator winding core's magnetic field, and the right N pole of the rotor permanent magnet block 24 is attracted by the S pole of the stator winding core. At this time, if... Figure 5 As shown in (b), when the stator winding core switch (solid-state relay I) at the location of rotor permanent magnet block 24 is closed and energized, the stator winding core at this location is displayed as the N pole. At this time, the stator winding core and the magnetic field of rotor permanent magnet block 24 do not generate any torque relationship. The left S pole of rotor permanent magnet block 24 is only subjected to the repulsive force of the S pole (not energized) of the stator winding core, while the right N pole is subjected to the attractive force of the S pole (not energized) of the fourth set of stator winding cores. When rotor permanent magnet block 24 reaches... Figure 5 In position (c), the energizing switch (solid-state relay I) of the stator winding core is disconnected, and the stator permanent magnet patch quickly magnetizes the stator winding core, forming a closed magnetic circuit. Simultaneously, at the instant solid-state relay I disconnects, solid-state relay II closes, absorbing the electrical energy generated by the self-inductance of the de-energized stator winding core. At this time, the left S pole of rotor permanent magnet block 24 is repelled by the S pole of the de-energized stator winding core at that location, and the right N pole of rotor permanent magnet block 24 is attracted by the S pole (not energized) of the fourth set of stator winding cores, and so on.

[0041] The applicant verified through the prototype that the combined self-induction generator motor provided by this utility model conforms to the above working principle, and proved that the magnetic field formed by the winding core and the permanent magnet patch of the same polarity without winding core both follow the working principle.

[0042] Based on the above working principle, referring to Figure 6When the combined permanent magnet self-inductance generator motor of this utility model is working, due to the same polarity stator permanent magnet patches (15, 18) pasted on the surface of the stator unwinding iron core (17, 19), the patches magnetize the stator unwinding iron core (17, 19) and naturally form a magnetic closed loop. When the permanent magnet block 24 on the permanent magnet rotor 9 is attracted, the optical media detection signal line of the circuit control board detects that the rotor power supply is in the on position. The circuit control board controls solid-state relay I to turn on and solid-state relay II to turn off. The stator winding core (16, 20) generates the same polarity as the stator permanent magnet patch (15, 18). At this time, the permanent magnet rotor 9 and the stator winding core (16, 20) do not generate torque. Current flows from the positive terminal of the power supply through solid-state relay I and the motor stator winding to the negative terminal of the power supply. The motor stator winding generates a magnetic field to drive the rotor to rotate. When the permanent magnet block 24 at this location on the permanent magnet rotor 9 rotates past the working surface width of the stator winding core (16, 20), the optical media detection signal line of the circuit control board detects that the rotor power supply is in the off position. The circuit control board controls the solid-state relay I to turn off and the solid-state relay II to turn on. At this time, the stator permanent magnet patches (15, 18) magnetize the stator winding core (16, 20), generating the same polarity as the rotor permanent magnet block 24 at that location, thus repelling the rotation of the permanent magnet rotor 9. Simultaneously, at the instant that the solid-state relay I turns off, the stator winding core (16, 20) generates a self-induced electromotive force, and the stator permanent magnet patches (15, 18) also magnetize the stator winding core (16, 20) to generate an induced electromotive force. At the same time, the solid-state relay II turns on, and the self-induced current flows from the input terminal of the motor stator winding through the solid-state relay II, then through the rechargeable battery, and finally through the output terminal of the motor stator winding, forming a closed loop and guiding electrical energy to the rechargeable battery or other electrical equipment. Therefore, the permanent magnet rotor 9 obtains torque, and the stator winding core (16, 20) converts the magnetic field energy into electrical energy output. Thus, the permanent magnet rotor 9 obtains a larger torque force than a single disc or radial permanent magnet self-inductance generator motor, which maximizes the utilization of permanent magnet energy and realizes energy recovery.

[0043] It should be noted that in the above description of the working process, permanent magnet patch 15, radial stator winding core 16, and radial stator unwinding core 17 correspond to radial stator 10, and same polarity permanent magnet patch 18, disc stator unwinding core 19, and disc stator winding core 20 correspond to disc stator 8. The combined stator motor only increases the torque of the single stator motor and has the same working principle as the single stator motor.

Claims

1. A combined permanent magnet self-inductance generator motor, characterized in that, Includes the body, at least one set of stator and permanent magnet rotor, power switch control system and power generation control switch; The machine body is in the shape of a horizontal cylinder, and the power switch control system and the power generation control switch are installed on the top of the machine body; The stator includes a disc stator and a radial stator. The radial stator is a horizontal cylindrical shape and is tightly installed in the inner cavity of the machine body. The radial stator has radial stator winding cores and radial stator unwinding cores spaced apart inside. The surface of the radial stator unwinding core is provided with permanent magnet patches of the same polarity. The disc stator includes a left stator and a right stator with the same structure. The left stator and the right stator are coaxial with the machine body, symmetrically arranged at both ends of the outer periphery of the permanent magnet rotor, and tightly installed in the inner cavity of the radial stator. The left stator and the right stator have a sawtooth structure on opposite sides. The disc stator winding core is located in the groove of the sawtooth structure, and the disc stator unwinding core is located on the platform of the sawtooth structure. The surface of the disc stator unwinding core is provided with permanent magnet patches of the same polarity. The permanent magnet rotor is installed in the radial stator cavity and includes a rotor shaft. A permanent magnet rotor assembly is sleeved outside the rotor shaft. Several permanent magnet blocks are symmetrically arranged on the outer periphery of the permanent magnet rotor assembly. A non-magnetic protective disk for the permanent magnet blocks is provided at both ends of the permanent magnet blocks along the axis of the permanent magnet rotor assembly. The power generation control switch includes solid-state relay I and solid-state relay II; The power switch control system includes a circuit control board, a positive power supply terminal, and a negative power supply terminal. The circuit control board is electrically connected to the permanent magnet rotor detection position via an optical medium detection signal line. The positive power supply terminal is electrically connected to the input terminals of the circuit control board and solid-state relay I. The output terminal of the circuit control board is electrically connected to the input terminals of solid-state relay I and solid-state relay II, as well as the negative power supply terminal. The output terminal of solid-state relay I is electrically connected to solid-state relay II and the input terminal of the motor stator winding. The input terminal of solid-state relay II is electrically connected to the input terminal of the rechargeable battery. The output terminals of the motor stator winding and the rechargeable battery are electrically connected to the negative power supply terminal.

2. The combined permanent magnet self-inductance generator motor as described in claim 1, characterized in that, The axial gap between the same polarity permanent magnet patch of the disc stator and the permanent magnet rotor is ≥5mm.

3. A combined permanent magnet self-inductance generator motor as described in claim 2, characterized in that, The gap between the radial stator inner cavity and the outer wall of the non-magnetic protective disk of the rotor permanent magnet block is 1mm.

4. A combined permanent magnet self-inductance generator motor as described in claim 3, characterized in that, The rotor shaft is inserted into the flange holes of the left and right flanges respectively, and the left and right flanges are fastened to the two ends of the machine body respectively.

5. A combined permanent magnet self-inductance generator motor as described in claim 4, characterized in that, The left flange is equipped with a left flange bearing, and the right flange is equipped with a right flange bearing. The two ends of the rotor shaft are respectively inserted into the bearing holes of the left flange bearing and the right flange bearing.

6. A combined permanent magnet self-inductance generator motor as described in claim 5, characterized in that, The left flange bearing is provided with a left bearing end cover on the outside, and the right flange bearing is provided with a right bearing end cover on the outside; the left flange and the right flange are respectively fastened to both ends of the machine body by fastening bolts.

7. A combined permanent magnet self-inductance generator motor as described in any one of claims 1-6, characterized in that, The permanent magnet blocks are installed vertically along the rotor shaft axis between two adjacent permanent magnet blocks and their non-magnetic protective disks. The magnetic field direction of each permanent magnet block is towards the rotor shaft.

8. A combined permanent magnet self-inductance generator motor as described in any one of claims 1-6, characterized in that, The radial stator winding core has the same working surface width as the disc stator winding core, and the permanent magnet patch has the same width as the same polarity permanent magnet patch.

9. A combined permanent magnet self-inductance generator motor as described in any one of claims 1-6, characterized in that, The winding cores and unwinding cores of the disc stator and radial stator are all made in equal numbers of 2, 4, 6, 8...N pairs, or 2, 3, 4, 5, 6, 7...N pairs.

10. A combined permanent magnet self-inductance generator motor as described in claim 9, characterized in that, When the winding cores and unwinding cores are manufactured in pairs of 2, 4, 6, 8...N, the number of permanent magnet blocks is 2, 4, 6, 8...N; when the winding cores and unwinding cores are manufactured in pairs of 2, 3, 4, 5, 6, 7...N, the number of permanent magnet blocks is 2, 3, 4, 5, 6, 7...N.

Images