Permanent magnet disc type self-inductance generator motor

Abstract

The utility model discloses a permanent magnet disc type self-inductance generator motor, which is characterized in that homopolar axial permanent magnet patches are adhered to two sides of a winding iron core, and the patch magnetized winding iron core naturally forms a magnetic closed loop. When the rotor permanent magnet is attracted, the relay I is switched on, the relay II is switched off, and the motor stator winding generates a magnetic field to drive the rotor to rotate. When the rotor permanent magnet rotates by the width of the working surface of the stator winding iron core, the relay I is switched off, the relay II is switched on, and the stator homo-polar permanent magnet patch generates the same polarity as the rotor permanent magnet to repel the permanent magnet rotor to rotate; meanwhile, the stator winding iron core generates self-induced electromotive force, the stator homopolar permanent magnet patch also magnetizes the stator winding iron core to generate induced electromotive force, self-induced current forms a closed loop through the motor stator, the relay II, the rechargeable battery and the motor stator winding, and electric energy is guided to the rechargeable battery or other electric equipment. Therefore, the permanent magnet energy is effectively utilized, and electric energy recovery is realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to permanent magnet motor technical field, specifically is a kind of permanent magnet disk type self-induction power generation motor. BACKGROUND

[0002] When existing motor works, due to the change of current, the motor winding core will generate self-induced electromotive force. However, due to the structural factors of the motor, this part of energy is usually consumed by heating or other internal losses, and cannot be recycled.

[0003] In the operation of permanent magnet motor, the change of stator winding current will also generate self-induced electromotive force (i.e. reverse electromotive force), and its energy is usually dissipated in the form of heat energy through winding resistance. The existing technology shows that the self-induced electromotive force generated by the permanent magnet motor can be recycled as electric energy through power electronic devices (such as inverters) and energy storage systems. For example, when braking, the motor becomes a generator mode, and the current direction is controlled in reverse through the inverter, so that mechanical energy is converted into electric energy and stored in the battery or super capacitor (Application of permanent magnet synchronous motor in brake energy recovery of pure electric commercial vehicle, automobile testing network). Another patent technology shows that by designing a stator winding with no air gap magnetic circuit, combined with a full-bridge switching circuit, self-induced current can be recycled to a capacitor or a battery in real time. For example, when the rotor and stator magnetic field interact, the back electromotive force generated by the on-off of the coil is stored through a diode and a capacitor, realizing high-efficiency energy recovery (CN1299178A, CN211239622U). However, the above-mentioned technologies all involve recycling electric energy by means of external electrical elements or circuit design, which has the technical problems of complex structure and cumbersome process of electric energy recovery. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the technical problems of complex structure and cumbersome process of electric energy recovery of existing permanent magnet motor, and provides a permanent magnet disk type self-induction power generation motor, which realizes electric energy recovery only by changing the arrangement structure of permanent magnet motor stator and permanent magnet rotor.

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

[0006] A permanent magnet disk type self-induction power generation motor, comprising a body, at least one set of disk type stator and permanent magnet rotor, power switch control system and power generation control switch;

[0007] The body is horizontally cylindrical, and the body top is provided with power switch control system and power generation control switch;

[0008] The disc stator includes a left stator and a right stator with identical structures. 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 machine body. The left stator and the right stator have a sawtooth structure on opposite sides. The sawtooth structure groove has a winding core, and the sawtooth structure platform has a non-winding core. The surface of the non-winding core has a permanent magnet patch with the same polarity as the stator.

[0009] The permanent magnet rotor includes a rotor shaft, a plurality of divergent permanent magnets are provided outside the rotor shaft, a permanent magnet sleeve is provided at the junction of the permanent magnets and the rotor shaft, and a permanent magnet protective sleeve is provided around the outer periphery of the permanent magnets. The permanent magnet protective sleeve is ferromagnetic.

[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 disc stator and the permanent magnet rotor are in two sets, with the left stator of the first set of disc stators and the right stator of the second set of disc stators connected back to back.

[0013] Furthermore, the axial gap between the permanent magnet patch of the disc stator and the permanent magnet of the rotor is ≥5mm.

[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 stator permanent magnet patches of the same polarity are all attached to the unwound iron core with the same polarity, forming a magnetic closed loop with the wound iron core.

[0018] Furthermore, the winding cores and unwinding cores are made in pairs of 2, 4, 6, 8...N, or pairs of 2, 3, 4, 5, 6, 7, 8...N.

[0019] Furthermore, when the wound iron core and the unwound iron core are manufactured in equal pairs of 2, 4, 6, 8...N, the number of permanent magnet mounting blocks on the permanent magnet rotor is 2, 4, 6, 8...N; when the wound iron core and the unwound iron core are manufactured in equal pairs of 2, 3, 4, 5, 6, 7...N, the number of permanent magnet mounting blocks on the permanent magnet rotor is 2, 3, 4, 5, 6, 7...N.

[0020] Furthermore, the magnetic field direction of the permanent magnet is always towards the rotor shaft.

[0021] Furthermore, the body is mounted on the bottom base.

[0022] Compared with existing permanent magnet motors, the advantages of this invention are as follows:

[0023] 1. This utility model adopts a disc-type stator and a radially arranged permanent magnet rotor, that is, attaching axial permanent magnet patches of the same polarity to both sides of the winding core. The patches magnetize the winding core, naturally forming a closed magnetic circuit. When the rotor permanent magnet on the permanent magnet rotor is attracted, the optical media detection signal line of the circuit control board detects that the rotor power supply is in the conducting position. The circuit control board controls solid-state relay I to conduct and solid-state relay II to turn off. The stator winding core generates the same polarity as the stator permanent magnet patch of the same polarity. At this time, the permanent magnet rotor and the stator winding core do not generate torque. The 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 rotor permanent magnet at this point of the permanent magnet rotor 7 rotates past the working surface width of the stator winding core, the optical media detection signal line of the circuit control board detects that the rotor power supply is off. In this circuit, the control board controls solid-state relay I to turn off and solid-state relay II to turn on. At this time, the stator's same-polarity permanent magnet patch magnetizes the stator winding core, generating the same polarity as the rotor's permanent magnet at that location, repelling the permanent magnet rotor's rotation. Simultaneously, at the instant solid-state relay I turns off, the stator winding core generates a self-induced electromotive force, and the stator's same-polarity permanent magnet patch also magnetizes the stator winding core, generating an induced electromotive force. At the same time, solid-state relay II turns on, and the self-induced current flows from the motor stator winding input terminal through solid-state relay II, then through the rechargeable battery, and finally through the motor stator winding output terminal, forming a closed loop, guiding electrical energy to the rechargeable battery or other electrical equipment. Thus, the permanent magnet rotor 7 obtains torque, and the stator winding core converts magnetic field energy into electrical energy output, making effective use of permanent magnet energy. If installed on an electric vehicle, it will significantly improve the electric vehicle's range and reduce battery consumption.

[0024] 2. Compared with a single permanent magnet self-inductor motor, the series-connected permanent magnet self-inductor motor of this utility model can increase the torque force of the motor by several times, promote the improvement of the motor's power performance, reduce current demand, and reduce energy consumption. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the permanent magnet self-inductor generator motor of Embodiment 1 of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the permanent magnet self-inductor generator motor of Embodiment 2 of this utility model;

[0027] Figure 3 This is a schematic diagram of the stator composition in the permanent magnet self-inductor generator motor of this utility model;

[0028] Figure 4 This is a schematic diagram of the rotor composition in the permanent magnet self-inductor generator motor of this utility model;

[0029] Figure 5 This is a schematic diagram illustrating the working principle of the permanent magnet self-inductor generator motor of this utility model.

[0030] 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;

[0031] Reference numerals: 1. Fastening bolt; 2. Left bearing end cover; 3. Left flange bearing; 4. Left flange; 5. Stator; 6. Stator winding core; 7. Permanent magnet rotor; 8. Permanent magnet sleeve; 9. Stator same polarity permanent magnet patch; 10. Rotor shaft; 12. Power switch control system; 13. Machine body; 14. Generator control switch; 15. Right flange; 16. Right flange bearing; 17. Right bearing end cover; 21. Machine base; 22. Rotor permanent magnet; 23. Unwinding core; 24. Permanent magnet sleeve. Detailed Implementation

[0032] The structure and working principle of the permanent magnet self-inductor generator motor of this utility model will be described in detail below with reference to the accompanying drawings.

[0033] Example 1

[0034] like Figure 1 , 3As shown in Figure 4, this embodiment provides a permanent magnet disc-type self-inductor generator motor, including a body 13, a set of disc stators 5 and a permanent magnet rotor 7, a power switch control system 12 and a power generation control switch 14. The body 13 is a horizontal cylindrical shape and is mounted on a bottom base 21. The power switch control system 12 and the power generation control switch 14 are located on the top of the body 13. The disc stators 5 include a left stator and a right stator with identical structures. 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 7, and tightly installed in the inner cavity of the body 13. The left stator and the right stator have a sawtooth structure on opposite sides. The sawtooth structure grooves are provided with winding cores 6, and the sawtooth structure platform is provided with unwound cores 23. The surface of the unwound core is provided with permanent magnet patches 9 of the same polarity as the stator. The permanent magnet rotor 7 includes a rotor shaft 10, and a plurality of divergent permanent magnets 22 are provided outside the rotor shaft 10. A permanent magnet sleeve 24 is provided at the junction of the permanent magnets 22 and the rotor shaft 10. A permanent magnet protective sleeve 8 is provided on the outer periphery of the permanent magnets 22. The permanent magnet protective sleeve 8 is ferromagnetic.

[0035] The power generation control switch 14 includes solid-state relay I and solid-state relay II;

[0036] 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 7 to detect its position via a light 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.

[0037] Specifically, the axial gap between the permanent magnet patch 9 of the disc stator 5 and the permanent magnet 22 of the rotor is ≥5mm.

[0038] The rotor shaft 10 is inserted into the flange holes of the left flange 4 and the right flange 15 at both ends, and the left flange 4 and the right flange 15 are fastened to the two ends of the machine body 13 by fastening bolts 1.

[0039] A left flange bearing 3 is installed in the flange hole of the left flange 4, and a right flange bearing 16 is installed in the flange hole of the right flange 15. The two ends of the rotor shaft 10 are respectively inserted into the bearing holes of the left flange bearing 3 and the right flange bearing 16. A left bearing end cover 2 is provided on the outside of the left flange bearing 3, and a right bearing end cover 17 is provided on the outside of the right flange bearing 16.

[0040] The stator permanent magnet patches 9, all of the same polarity, are attached to the unwound iron core 23 with the same polarity, forming a magnetic closed loop with the wound iron core 6. The magnetic field direction of the permanent magnets 22 is always towards the rotor shaft 10.

[0041] In this embodiment of the utility model, the winding core 6 and the unwinding core 23 are manufactured equally, and the permanent magnet 22 on the permanent magnet rotor 7 is installed in the number of blocks 2, 4, 6, 8...N.

[0042] Example 2

[0043] This embodiment provides a permanent magnet self-inductor generator motor, such as... Figure 2 , 3 As shown in Figure 4, the other structures are the same as in the embodiment, with the only difference being:

[0044] The disc stator 5 and the permanent magnet rotor 7 are in two sets. The left stator of the first set of disc stators 5 and the right stator of the second set of disc stators 5 are connected back to back.

[0045] like Figure 5 As shown. The working principle of this utility model is as follows: Figure 5 (a) In the de-energized mode, the stator winding core 6 is magnetized by the N pole of the stator permanent magnet patch 9, forming a closed magnetic circuit NS. That is, the working surface of the stator winding core 6 displays the S pole. At this time, the left S pole of the rotor permanent magnet 22 is repelled by the S pole of the stator winding core 6 magnetic field, and the right N pole of the rotor permanent magnet 22 is attracted by the S pole of the stator winding core 6. At this time, if... Figure 5 As shown in (b), when the stator winding core 6 switch (solid-state relay I) where the rotor permanent magnet 22 is located is closed and energized, the stator winding core 6 at this location is displayed as the N pole. At this time, the stator winding core 6 and the magnetic field of the rotor permanent magnet 22 do not produce any torque relationship. The left S pole of the rotor permanent magnet 22 is only subjected to the repulsive force of the S pole (not energized) of the stator winding core 6, and the right N pole is subjected to the attractive force of the S pole (not energized) of the fourth set of stator winding cores 6. When the rotor permanent magnet 22 reaches Figure 5 (c) When the stator winding core 6 is in position (solid-state relay I), the energizing switch is disconnected, and the stator same-polarity permanent magnet patch 9 quickly magnetizes the stator winding core 6 and forms a magnetic closed 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 stator winding core 6 due to the de-energization. At this time, the left S pole of the rotor permanent magnet 22 is repelled by the S pole of the de-energized stator winding core 6, and the right N pole of the rotor permanent magnet 22 is attracted by the S pole (not energized) of the fourth set of stator winding cores 6, and so on.

[0046] The applicant verified through the prototype that the permanent magnet self-inductance 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.

[0047] Based on the above working principle, referring to Figure 6 When the permanent magnet self-inductor motor of this invention is working, a stator-polarity permanent magnet patch 9 is attached to the surface of the unwound iron core 23. The stator-polarity permanent magnet patch 9 magnetizes the unwound iron core 23, naturally forming a closed magnetic circuit. When the rotor permanent magnet 22 on the permanent magnet rotor 7 is attracted, the optical media detection signal line of the circuit control board detects that the rotor power supply is in the conducting position. The circuit control board controls the solid-state relay I to conduct and the solid-state relay II to turn off. The stator winding iron core 6 generates the same polarity as the stator-polarity permanent magnet patch 9. At this time, the permanent magnet rotor 7 and the stator winding iron core 6 do not generate torque. Current flows from the positive terminal of the power supply through the 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 rotor permanent magnet 22 at this location on the permanent magnet rotor 7 rotates past the working surface width of the stator winding iron core 6, the optical media detection signal line of the circuit control board detects that the rotor power supply is in the off position. When the circuit is in the off position, the circuit control board controls solid-state relay I to turn off and solid-state relay II to turn on. At this time, the stator same-polarity permanent magnet patch 9 magnetizes the stator winding core 6, generating the same polarity as the rotor permanent magnet 22 at that location, repelling the rotation of the permanent magnet rotor 7. Simultaneously, at the instant solid-state relay I turns off, the stator winding core 6 generates a self-induced electromotive force, and the stator same-polarity permanent magnet patch 9 also magnetizes the stator winding core 6, generating an induced electromotive force. At the same time, solid-state relay II turns on, and the self-induced current flows from the input terminal of the motor stator winding through solid-state relay II, then through the rechargeable battery, and finally through the output terminal of the motor stator winding, forming a closed loop, guiding electrical energy to the rechargeable battery or other electrical equipment. Thus, the permanent magnet rotor 7 obtains torque, and the stator winding core 6 converts magnetic field energy into electrical energy output, making effective use of permanent magnet energy.

Claims

1. A permanent magnet disc type self-induction generating motor, characterized by, It comprises a body, at least one set of disc stator and permanent magnet rotor, power switch control system and power generation control switch; The body is horizontally cylindrical, and the power switch control system and the power generation control switch are installed on the top of the body; The disc stator comprises left and right stators with the same structure, which are coaxial with the body, symmetrically arranged at both ends of the outer periphery of the permanent magnet rotor, and closely installed in the inner cavity of the body; the left and right stators are provided with sawtooth structures on the opposite sides, the grooves of the sawtooth structures are provided with winding cores, the platforms of the sawtooth structures are provided with non-winding cores, and the surfaces of the non-winding cores are provided with stator same-polarity permanent magnet patches; The permanent magnet rotor comprises a rotor shaft, a plurality of divergent permanent magnets arranged outside the rotor shaft, a permanent magnet sleeve arranged at the joint of the permanent magnet and the rotor shaft, and a permanent magnet protection sleeve arranged outside the outer periphery of the permanent magnet, wherein the permanent magnet protection sleeve has ferromagnetism; The power generation control switch comprises solid-state relays I and II; The power switch control system comprises a circuit control board, a positive electrode and a negative electrode, wherein the circuit control board is electrically connected with the permanent magnet rotor through an optical medium detection signal line; the positive electrode is electrically connected with the circuit control board and the input end of the solid-state relay I; the output end of the circuit control board is electrically connected with the input ends of the solid-state relays I and II and the negative electrode; the output end of the solid-state relay I is electrically connected with the input end of the solid-state relay II and the input end of the motor stator winding; the input end of the solid-state relay II is electrically connected with the input end of the charging battery; and the output ends of the motor stator winding and the charging battery are electrically connected with the negative electrode.

2. A permanent magnet disc type self-induction generating motor as claimed in claim 1, characterized in that, The disc stator and the permanent magnet rotor are two sets, the left stator of the first set of disc stators is connected with the right stator of the second set of disc stators in a back-to-back manner.

3. A permanent magnet disc induction generator motor as claimed in claim 1 or 2 wherein, The axial gap between the permanent magnet patches of the disc stator and the rotor permanent magnet is greater than or equal to 5 mm.

4. A permanent magnet disc type self-induction generating motor as claimed in claim 3, characterized in that, The two ends of the rotor shaft are respectively inserted into the flange holes of the left and right flange plates, and the left and right flange plates are respectively fastened to the two ends of the body.

5. A permanent magnet disc type self-induction generating motor as claimed in claim 4, characterized in that, The left flange plate is provided with a left flange plate bearing in the flange hole, the right flange plate is provided with a right flange plate bearing in the flange hole, and the two ends of the rotor shaft are respectively inserted into the bearing holes of the left and right flange plate bearings.

6. A permanent magnet disc type self-induction generating motor as claimed in claim 5, characterized in that, The left flange plate bearing is provided with a left bearing end cover outside, and the right flange plate bearing is provided with a right bearing end cover outside; the left and right flange plates are respectively fastened to the two ends of the body through fastening bolts.

7. A permanent magnet disc type self-induction power generation motor according to any one of claims 1 to 2, 4 to 6, wherein The stator same-polarity permanent magnet patches are all pasted on the non-winding cores with the same polarity, and form a magnetic closed loop with the winding cores.

8. A permanent magnet disc type self-induction generating motor as claimed in any one of claims 1-2, 4-6, characterized in that, The winding cores and the non-winding cores are made in pairs of 2, 4, 6, 8…N or 2, 3, 4, 5, 6, 7…N.

9. A permanent magnet disc type self-induction generating motor as claimed in claim 8, characterized in that, When the winding cores and the non-winding cores are made in pairs of 2, 4, 6, 8…N, the number of permanent magnet mounting blocks on the permanent magnet rotor is 2, 4, 6, 8…N; when the winding cores and the non-winding cores are made in pairs of 2, 3, 4, 5, 6, 7…N, the number of permanent magnet mounting blocks on the permanent magnet rotor is 2, 3, 4, 5, 6, 7…N.

10. A permanent magnet disc type self-induction power generation motor according to any one of claims 1 to 2, 4 to 6, wherein The magnetic field directions of the permanent magnets are all towards the direction of the rotor shaft.

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