Rare earth permanent magnet magnetic suspension AC and DC wheel hub motor

Abstract

The invention discloses a rare earth permanent magnet magnetic suspension AC / DC wheel hub motor, wherein the rotor is located on the outside of the stator outer ring; a plurality of rotor magnets are evenly distributed on the inside of the rotor, a plurality of stator magnets are evenly distributed on the outside of the stator outer ring, and a stator inner disk is fixed on the inside of the stator outer ring; the magnetic poles of the rotor magnet and the stator magnet on the adjacent side are the same; a stator core is arranged between each two adjacent stator magnets, and the axial direction of the stator core is along the diameter direction of the stator outer ring; an input DC three-phase winding is wound on the stator core, that is, the first stator core is wound with the DC first phase U, the second stator core adjacent to it is wound with the DC second phase V, and the third stator core adjacent to it is wound with the DC third phase W, and the U, V, and W input ends are set as the same-name ends, and the first group of U, V, and W windings are connected with the same-name ends of the second group of U, V, and W windings, and circulate in sequence; and a wheel hub steel ring and a rubber tire are arranged. The invention has a simple structure and can obtain better space utilization.

Description

Technical Field

[0001] The invention relates to the field of motors, in particular to a rare earth permanent magnet magnetic suspension AC / DC wheel hub motor. Background Art

[0002] A motor is an electromagnetic device that converts or transmits electrical energy according to the law of electromagnetic induction, or converts one form of electrical energy into another. An electric motor converts electrical energy into mechanical energy (commonly known as a motor), and a generator converts mechanical energy into electrical energy. The electric motor is represented by the letter "M" in the circuit. Its main function is to generate driving torque as a power source for electrical appliances or various machines.

[0003] The wheel hub motor is also called the in-wheel motor. Its biggest feature is that the power, transmission and brake devices are all integrated into the wheel hub, thus greatly simplifying the mechanical part of the electric vehicle. The wheel hub motor is not a new thing. As early as 1900, electric vehicles equipped with wheel hub motors on the front wheels were manufactured. In the 1970s, this technology was applied in fields such as mining transport vehicles. As for the wheel hub motors used in passenger cars, Japanese manufacturers started the research and development of this technology early and are currently in a leading position. International auto giants including General Motors and Toyota have also been involved in this technology.

[0004] The wheel hub motor drive system is mainly divided into two structural types according to the rotor type of the motor: inner rotor type and outer rotor type. The outer rotor type uses a low-speed outer rotor motor with a maximum speed of 1000-1500r / min, no reduction device, and the wheel speed is the same as the motor; while the inner rotor type uses a high-speed inner rotor motor with a fixed transmission ratio reducer. In order to obtain a higher power density, the motor speed can be as high as 10000r / min. With the emergence of more compact planetary gear reducers, the inner rotor wheel hub motor is more competitive in power density than the low-speed outer rotor type.

[0005] In recent years, the application of foreign wheel hub motor drive technology is mainly reflected in two aspects: one is the integrated electric system developed by the research and development team represented by tire manufacturers or auto parts manufacturers; the other is the electric vehicle jointly developed by the vehicle manufacturer and the wheel hub motor drive system manufacturer. In my country, the research on wheel hub motors is mostly concentrated in colleges and universities, and the products are all electric vehicles. At the same time, independent brand automobile manufacturers have also launched their own wheel hub motor technology products. Although domestic automobile manufacturers can produce electric vehicles, the research on wheel hub motor drive technology is not mature yet, especially in the development of high-torque wheel hub motors, there is still a certain gap with foreign advanced products. Therefore, my country still needs to strengthen the investment in the research and development of wheel hub motor technology, improve core competitiveness, narrow the gap, and strive to reach the world's advanced level.

[0006] For traditional vehicles, the clutch, transmission, drive shaft, differential and even the transfer case are all indispensable. These components are not only heavy and make the vehicle structure more complicated, but also require regular maintenance and have high failure rates. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a rare earth permanent magnet magnetic levitation AC and DC wheel hub motor, which adopts a rare earth permanent magnet magnetic levitation structure, so that the motor torque is increased, the efficiency is high, and the loss is small; the motor can generate electricity to charge the vehicle battery while outputting power, and the structure is simpler. Vehicles driven by wheel hub motors can obtain better space utilization, and the transmission efficiency is also much higher.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0009] A rare earth permanent magnet magnetic suspension AC / DC wheel hub motor, comprising a rotor, a rotor magnet, a stator outer ring, a stator inner disk and a stator magnet; the rotor is located outside the stator outer ring; a plurality of rotor magnets are evenly distributed inside the rotor, all rotor magnets are set to be N-pole magnetic poles corresponding to the stator direction, at this time, there are about 20% induction S-pole magnetic poles between adjacent rotor magnets, and the rotor magnets are repelled from the stator magnets to form a single-pole rotor without affecting the stator magnets at a certain distance; a plurality of stator magnets are evenly distributed outside the stator outer ring, all stator ... stator magnets are set to be N-pole magnetic poles corresponding to the stator direction, at this time, the stator magnets are set to be N-pole magnetic poles corresponding to the stator direction, at this time, the stator magnets are set to be N-pole magnetic poles corresponding to the stator direction, at this time, the stator magnets are set to be N-pole magnetic poles corresponding to the stator direction, at this time, the stator magnets are set to be N-pole magnetic poles corresponding to the stator direction, at this time, the stator magnets are set to be N-pole magnetic poles corresponding to the stator direction, at this time, the stator magnets are set to be N-pole magnetic poles corresponding to the stator direction, at this time, the stator magnets The stator magnet is set to the N pole corresponding to the rotor direction, so that the stator magnet repels the rotor magnet to form a single-pole stator, and the inner side of the stator outer ring is fixed to the stator inner disk; the rotor magnet and the stator magnet have the same magnetic poles on the adjacent side, so that the stator rotor is in a suspended state, and the rotor magnets induce different magnetic poles between the adjacent rotor magnets. When not affecting the stator magnet, the distance between the rotor magnet and the stator magnet is determined and the maximum repulsion between the rotor magnet and the stator magnet is maintained; a stator core is arranged between each two adjacent stator magnets, and the stator core is fixed to the stator outer ring. During the rotation of the rotor, the stator magnet and the rotor magnet repel each other, which increases the torque of the rotor. The axial direction of the stator core is along the diameter direction of the stator outer ring; the stator core is wound with an input DC three-phase winding, and the N pole and S pole of the alternating change with the N pole of the rotor magnet and the induced S pole to form a rotating magnetic field to make the rotor rotate and do work. It has the following winding method: the first stator core is wound with a DC first phase U, the second stator core adjacent to the first stator core is wound with a DC second phase V, and the third stator core adjacent to the second stator core is wound with a DC second phase V. The third phase W of DC is wound, the fourth stator core adjacent to the third stator core is wound with the first phase U of DC, the fifth stator core adjacent to the fourth stator core is wound with the second phase V of DC, and the sixth stator core adjacent to the fifth stator core is wound with the third phase W of DC. The U, V, and W input terminals are set as the same-name terminals, and the opposite-name terminals of the first group of U, V, and W windings are connected with the same-name terminals of the second group of U, V, and W windings, and circulate in sequence to make the same-phase winding coils closed in series; a hub steel ring is fixed to the outer ring of the rotor, and a rubber tire is fixed to the outer ring of the hub steel ring.

[0010] Furthermore, the stator outer ring is a magnetic steel ring or the stator outer ring and the stator core are made of silicon steel to form a whole.

[0011] Furthermore, the stator core is a silicon steel core.

[0012] Furthermore, the number of the stator magnets is 12*N, where N represents a natural number.

[0013] Furthermore, it also includes an output AC three-phase winding, with four adjacent stator cores forming a group of virtual output cores, each group of virtual output cores is wound with an output closed coil, and the A, B, and C output terminals are set as like-name terminals, and the opposite-name terminals of the first group of A, B, and C windings are connected to the like-name terminals of the second group of A, B, and C windings, and the cycle is repeated in sequence, so that the output closed coils of the same output phase are connected in series.

[0014] Furthermore, the rotor and the hub steel ring are fixed by rotor rivets.

[0015] Furthermore, a motor end cover is provided on one side of the rare earth permanent magnet magnetic suspension AC / DC hub motor, and a power lead is provided on the motor end cover.

[0016] Furthermore, the stator outer ring and the stator inner disk are connected via stator rivets.

[0017] Furthermore, a stator connecting shaft is fixed to one side of the stator inner disk.

[0018] Compared with the prior art, the beneficial effects of the present invention are: the stator and rotor of the hub motor adopt a rare earth permanent magnet magnetic levitation structure, which increases the motor torque, improves the efficiency and reduces the loss; and the motor can generate electricity to charge the vehicle battery while outputting power, and the structure is simpler. Vehicles driven by hub motors can obtain better space utilization, and the transmission efficiency is also much higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the internal structure of the rare earth permanent magnet magnetic suspension AC and DC hub motor of the present invention.

[0020] Figure 2 It is a schematic diagram of the structure of the input DC three-phase winding of the rare earth permanent magnet magnetic suspension AC / DC hub motor of the present invention.

[0021] Figure 3 It is a schematic diagram of the expansion of the input DC three-phase winding of the rare earth permanent magnet magnetic suspension AC / DC hub motor of the present invention.

[0022] Figure 4 It is a schematic diagram of the DC U-phase winding of the rare earth permanent magnet magnetic suspension AC / DC hub motor of the present invention.

[0023] Figure 5 It is a schematic diagram of the DC V-phase winding of the rare earth permanent magnet magnetic suspension AC / DC hub motor of the present invention.

[0024] Figure 6 It is a schematic diagram of the DC W-phase winding of the rare earth permanent magnet magnetic suspension AC / DC hub motor of the present invention.

[0025] Figure 7 It is a schematic diagram of the output AC three-phase winding of the rare earth permanent magnet magnetic suspension AC / DC hub motor of the present invention.

[0026] Figure 8 It is a development diagram of the output AC three-phase winding of the rare earth permanent magnet magnetic suspension AC / DC hub motor of the present invention.

[0027] Fig. 9 This is an overall appearance diagram of the rare earth permanent magnet magnetic suspension AC / DC hub motor of the present invention.

[0028] In the figure: 1-rubber tire; 2-wheel hub steel rim; 3-rotor; 4-rotor magnet; 5-stator core; 6-stator magnet; 7-stator outer ring; 8-stator inner disk; 9-rotor rivet; 10-stator rivet; 11-motor end cover; 12-stator connecting shaft; 13-power lead wire; O represents the center point of the DC three-phase winding; U, V, W (the meanings are the same when accompanied by numbers, but they are in different device positions for ease of description) represent the DC three-phase input DC winding; A, B, C (the meanings are the same when accompanied by numbers, but they are in different device positions for ease of description) represent the AC three-phase four-wire output AC winding, and O represents the center point of the AC three-phase winding. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] Example 1

[0031] A rare earth permanent magnet magnetic suspension AC / DC wheel hub motor, comprising a rotor 3, a rotor magnet 4, a stator outer ring 7, a stator inner disk 8 and a stator magnet 6; the rotor 3 is located outside the stator outer ring 7; a plurality of rotor magnets 4 are evenly distributed on the inner side of the rotor 3, a plurality of stator magnets 6 are evenly distributed on the outer side of the stator outer ring 7, and a stator inner disk 8 is fixed on the inner side of the stator outer ring 7; the magnetic poles of the rotor magnet 4 and the stator magnet 6 on the adjacent side are the same; a stator core 5 is arranged between each two adjacent stator magnets 6, the stator core 5 is fixed to the stator outer ring 7, and the axial direction of the stator core 5 is along the diameter direction of the stator outer ring 7; an input direct current is wound on the stator core 5 The three-phase winding has the following winding method: a first stator core 5 is wound with a DC first phase U, a second stator core 5 adjacent to the first stator core 5 is wound with a DC second phase V, a third stator core 5 adjacent to the second stator core 5 is wound with a DC third phase W, a fourth stator core 5 adjacent to the third stator core 5 is wound with a DC first phase U, a fifth stator core 5 adjacent to the fourth stator core 5 is wound with a DC second phase V, and a sixth stator core 5 adjacent to the fifth stator core 5 is wound with a DC third phase W, and the cycle is in sequence; a hub steel ring 2 is fixed to the outer ring of the rotor 3, and a rubber tire 1 is fixed to the outer ring of the hub steel ring 2.

[0032] In the present invention, when the stator magnet 6 and the rotor magnet 4 have corresponding N poles that repel each other, the S pole induced between the two rotor magnets 4 does not affect the N pole of the stator magnet 6, but determines the distance between the rotor magnet 4 and the stator magnet 6 while maintaining the maximum repulsion between the rotor magnet 4 and the stator magnet 6. The rotor magnet has only repulsion but no attraction on the stator magnet. The rotor 3 is equivalent to a single-pole rotor. The stator magnet 6 and the rotor magnet 4 repel each other, causing the rotor 3 to be in a suspended state. The stator core 5 acts on the N pole and the induced S pole of the rotor magnet 4 to form a rotating magnetic field to rotate the rotor 3. During the rotation of the rotor 3, the stator magnet 6 and the rotor magnet 4 repel each other, causing the rotor 3 to increase the torque.

[0033] DC three-phase winding expansion Figure 2 , Figure 3 The Y connection of the DC three-phase winding is represented by U, V, and W, and the center point of the DC three-phase winding is represented by O; the U phase (such as Figure 4 As shown in the figure): 1) DC signal is input from the U terminal, making the U phase winding core N pole and repelling the N pole of the rotor magnet 4; 2) The W phase winding core is in a suspended state, 3) The DC signal continues to pass through the center point O of the DC winding from the V phase to the V terminal, making the V phase winding core S pole, so that the N pole of the rotor magnet 4 and the S pole of the V phase winding core are attracted to each other and move toward the V phase winding core; V phase (as shown in the figure) Figure 5 As shown in the figure): 1) DC signal is input from the V terminal, making the V phase winding core N pole and repelling the N pole of the rotor magnet 4; 2) The U phase winding core is in a suspended state, 3) The DC signal continues to pass through the center point O of the DC winding from the W phase to the W terminal, making the W phase winding core S pole, so that the N pole of the rotor magnet 4 and the S pole of the V phase winding core are attracted to each other and move toward the V phase winding core; W phase (as shown in the figure) Figure 6 As shown in the figure): 1) DC signal is input from the W end, making the W phase winding core N pole and repelling the N pole of the rotor magnet 4; 2) the V phase winding core is in a suspended state, 3) the DC signal continues to pass through the center point O end of the DC winding from the U phase to the U end, making the U phase winding core S pole, so that the rotor magnet N pole and the U phase winding core S pole are attracted to each other and move toward the U phase winding core, and the cycle is repeated to form a rotating magnetic field to make the rotor rotate and do work.

[0034] like Figure 2As shown, it is assumed that all stator magnets 6 are N-pole corresponding to the direction of the rotor 3, and all rotor magnets 4 are N-pole corresponding to the direction of the stator. The magnetic saturation of the S-pole with different magnetic poles induced between adjacent magnets of the stator magnet 6 is about 30% of the N-pole of the magnet, and the effect of this S-pole on the rotor magnet 4 is very small, so the stator is regarded as a single-pole stator. The magnetic saturation of the S-pole with different magnetic poles induced between adjacent magnets of the rotor magnet 4 is about 30% of the N-pole of the magnet, and the effect of this S-pole on the stator magnet 6 is very small, so the rotor 3 is regarded as a single-pole rotor. The distance between the stator magnet 6 and the rotor magnet 4 depends on the mutual influence of the induced S-pole on the stator magnet 6 and the rotor magnet 4, and the maximum repulsion between the stator magnet 6 and the rotor magnet 4 must be ensured.

[0035] like Figure 1 As shown, the stator core 5 leads the stator induced magnetic pole S pole toward the direction of the rotor magnet 4, and the DC three-phase winding is wound on the stator core 5 to produce alternating N and S poles, which form a rotating magnetic field by attracting and repelling the N pole and induced S pole of the rotor magnet 4 to rotate the rotor 3.

[0036] Output Y connection three-phase four-wire AC: Figure 7 , Figure 8 The stator core 5 has an AC three-phase winding between it. The rotor 3 makes the stator AC winding cut its magnetic field lines during rotation. The AC three-phase winding is represented by A, B, and C, and the center of the three-phase winding is represented by O. In the present invention, components such as the stator and the rotor 3 can be modularized.

[0037] Example 2

[0038] A rare earth permanent magnet magnetic suspension AC / DC wheel hub motor, comprising a rotor 3, a rotor magnet 4, a stator outer ring 7, a stator inner disk 8 and a stator magnet 6; the rotor 3 is located outside the stator outer ring 7; a plurality of rotor magnets 4 are evenly distributed on the inner side of the rotor 3, a plurality of stator magnets 6 are evenly distributed on the outer side of the stator outer ring 7, and a stator inner disk 8 is fixed on the inner side of the stator outer ring 7; the magnetic poles of the rotor magnet 4 and the stator magnet 6 on the adjacent side are the same; a stator core 5 is arranged between each two adjacent stator magnets 6, the stator core 5 is fixed to the stator outer ring 7, and the axial direction of the stator core 5 is along the diameter direction of the stator outer ring 7; an input direct current is wound on the stator core 5 The three-phase winding has the following winding method: the first stator core 5 is wound with the first phase U of DC, the second stator core 5 adjacent to the first stator core 5 is wound with the second phase V of DC, the third stator core 5 adjacent to the second stator core 5 is wound with the third phase W of DC, the fourth stator core 5 adjacent to the third stator core 5 is wound with the first phase U of DC, the fifth stator core 5 adjacent to the fourth stator core 5 is wound with the second phase V of DC, and the sixth stator core 5 adjacent to the fifth stator core 5 is wound with the third phase W of DC, and the cycle is in sequence; a hub steel ring 2 is fixed on the outer ring of the rotor 3, and a rubber tire 1 is fixed on the outer ring of the hub steel ring 2. The stator outer ring 7 is a magnetic steel ring. The stator core 5 is a silicon steel core.

[0039] Example 3

[0040] A rare earth permanent magnet magnetic suspension AC / DC wheel hub motor, comprising a rotor 3, a rotor magnet 4, a stator outer ring 7, a stator inner disk 8 and a stator magnet 6; the rotor 3 is located outside the stator outer ring 7; a plurality of rotor magnets 4 are evenly distributed on the inner side of the rotor 3, a plurality of stator magnets 6 are evenly distributed on the outer side of the stator outer ring 7, and a stator inner disk 8 is fixed on the inner side of the stator outer ring 7; the magnetic poles of the rotor magnet 4 and the stator magnet 6 on the adjacent side are the same; a stator core 5 is arranged between each two adjacent stator magnets 6, the stator core 5 is fixed to the stator outer ring 7, and the axial direction of the stator core 5 is along the diameter direction of the stator outer ring 7; an input direct current is wound on the stator core 5 The three-phase winding has the following winding method: the first stator core 5 is wound with a DC first phase U, the second stator core 5 adjacent to the first stator core 5 is wound with a DC second phase V, the third stator core 5 adjacent to the second stator core 5 is wound with a DC third phase W, the fourth stator core 5 adjacent to the third stator core 5 is wound with a DC first phase U, the fifth stator core 5 adjacent to the fourth stator core 5 is wound with a DC second phase V, and the sixth stator core 5 adjacent to the fifth stator core 5 is wound with a DC third phase W, and the cycle is in sequence; a hub steel ring 2 is fixed on the outer ring of the rotor 3, and a rubber tire 1 is fixed on the outer ring of the hub steel ring 2. The number of the stator magnets 6 is 12*N, where N represents a natural number.

[0041] Example 4

[0042] A rare earth permanent magnet magnetic suspension AC / DC wheel hub motor, comprising a rotor 3, a rotor magnet 4, a stator outer ring 7, a stator inner disk 8 and a stator magnet 6; the rotor 3 is located outside the stator outer ring 7; a plurality of rotor magnets 4 are evenly distributed on the inner side of the rotor 3, a plurality of stator magnets 6 are evenly distributed on the outer side of the stator outer ring 7, and a stator inner disk 8 is fixed on the inner side of the stator outer ring 7; the magnetic poles of the rotor magnet 4 and the stator magnet 6 on the adjacent side are the same; a stator core 5 is arranged between each two adjacent stator magnets 6, the stator core 5 is fixed to the stator outer ring 7, and the axial direction of the stator core 5 is along the diameter direction of the stator outer ring 7; an input direct current is wound on the stator core 5 The three-phase winding has the following winding method: the first stator core 5 is wound with a first DC phase U, the second stator core 5 adjacent to the first stator core 5 is wound with a second DC phase V, the third stator core 5 adjacent to the second stator core 5 is wound with a third DC phase W, the fourth stator core 5 adjacent to the third stator core 5 is wound with a first DC phase U, the fifth stator core 5 adjacent to the fourth stator core 5 is wound with a second DC phase V, and the sixth stator core 5 adjacent to the fifth stator core 5 is wound with a third DC phase W, and the winding is cyclic in sequence; a hub steel ring 2 is fixed on the outer ring of the rotor 3, and a rubber tire 1 is fixed on the outer ring of the hub steel ring 2. It also includes an output AC three-phase winding, with four adjacent stator cores 5 as a group of virtual output cores, each group of virtual output cores is wound with an output closed coil, and the output closed coils of the same output phase are connected in series.

[0043] Example 5

[0044] A rare earth permanent magnet magnetic suspension AC / DC wheel hub motor, comprising a rotor 3, a rotor magnet 4, a stator outer ring 7, a stator inner disk 8 and a stator magnet 6; the rotor 3 is located outside the stator outer ring 7; a plurality of rotor magnets 4 are evenly distributed on the inner side of the rotor 3, a plurality of stator magnets 6 are evenly distributed on the outer side of the stator outer ring 7, and a stator inner disk 8 is fixed on the inner side of the stator outer ring 7; the magnetic poles of the rotor magnet 4 and the stator magnet 6 on the adjacent side are the same; a stator core 5 is arranged between each two adjacent stator magnets 6, the stator core 5 is fixed to the stator outer ring 7, and the axial direction of the stator core 5 is along the diameter direction of the stator outer ring 7; an input direct current is wound on the stator core 5 The three-phase winding has the following winding method: the first stator core 5 is wound with a DC first phase U, the second stator core 5 adjacent to the first stator core 5 is wound with a DC second phase V, the third stator core 5 adjacent to the second stator core 5 is wound with a DC third phase W, the fourth stator core 5 adjacent to the third stator core 5 is wound with a DC first phase U, the fifth stator core 5 adjacent to the fourth stator core 5 is wound with a DC second phase V, and the sixth stator core 5 adjacent to the fifth stator core 5 is wound with a DC third phase W, and the cycle is in sequence; a hub steel ring 2 is fixed to the outer ring of the rotor 3, and a rubber tire 1 is fixed to the outer ring of the hub steel ring 2. The rotor 3 is fixed to the hub steel ring 2 by rotor rivets 9. The stator outer ring 7 is connected to the stator inner disk 8 by stator rivets 10.

[0045] Example 6

[0046] A rare earth permanent magnet magnetic suspension AC / DC wheel hub motor, comprising a rotor 3, a rotor magnet 4, a stator outer ring 7, a stator inner disk 8 and a stator magnet 6; the rotor 3 is located outside the stator outer ring 7; a plurality of rotor magnets 4 are evenly distributed on the inner side of the rotor 3, a plurality of stator magnets 6 are evenly distributed on the outer side of the stator outer ring 7, and a stator inner disk 8 is fixed on the inner side of the stator outer ring 7; the magnetic poles of the rotor magnet 4 and the stator magnet 6 on the adjacent side are the same; a stator core 5 is arranged between each two adjacent stator magnets 6, the stator core 5 is fixed to the stator outer ring 7, and the axial direction of the stator core 5 is along the diameter direction of the stator outer ring 7; an input direct current is wound on the stator core 5 The three-phase winding has the following winding method: the first stator core 5 is wound with the first phase U of DC, the second stator core 5 adjacent to the first stator core 5 is wound with the second phase V of DC, the third stator core 5 adjacent to the second stator core 5 is wound with the third phase W of DC, the fourth stator core 5 adjacent to the third stator core 5 is wound with the first phase U of DC, the fifth stator core 5 adjacent to the fourth stator core 5 is wound with the second phase V of DC, and the sixth stator core 5 adjacent to the fifth stator core 5 is wound with the third phase W of DC, and the winding is cyclic in sequence; a hub steel ring 2 is fixed on the outer ring of the rotor 3, and a rubber tire 1 is fixed on the outer ring of the hub steel ring 2. A motor end cover 11 is provided on one side of the rare earth permanent magnet magnetic suspension AC / DC hub motor, and a power lead 13 is provided on the motor end cover 11. A stator connecting shaft 12 is fixed on one side of the stator inner disk 8.

Claims

1. A rare earth permanent magnet magnetic suspension AC / DC wheel hub motor, characterized in that: It comprises a rotor (3), a rotor magnet (4), a stator outer ring (7), a stator inner disk (8) and a stator magnet (6); the rotor (3) is located outside the stator outer ring (7); A plurality of rotor magnets (4) are evenly distributed on the inner side of the rotor (3), a plurality of stator magnets (6) are evenly distributed on the outer side of the stator outer ring (7), and a stator inner disk (8) is fixed on the inner side of the stator outer ring (7); the magnetic poles of the rotor magnets (4) and the stator magnets (6) on the adjacent sides are the same; a stator core (5) is arranged between each two adjacent stator magnets (6), the stator core (5) is fixed to the stator outer ring (7), and the axial direction of the stator core (5) is along the diameter direction of the stator outer ring (7); When the stator magnet (6) and the rotor magnet (4) have corresponding N poles that repel each other, the S pole induced between the two rotor magnets (4) does not affect the N pole of the stator magnet (6) and determines the distance between the rotor magnet (4) and the stator magnet (6) while maintaining the maximum repulsive force between the rotor magnet (4) and the stator magnet (6). The rotor magnet has only repulsive force but no attractive force on the stator magnet. The rotor (3) is equivalent to a single-pole rotor. The stator magnet (6) and the rotor magnet (4) repel each other, causing the rotor (3) to be in a suspended state. The stator core (5) and the N pole and the induced S pole of the rotor magnet (4) act to form a rotating magnetic field to rotate the rotor (3). During the rotation of the rotor (3), the stator magnet (6) and the rotor magnet (4) repel each other, causing the rotor (3) to increase torque. An input DC three-phase winding is wound on the stator core (5), which has the following winding method: a first DC phase U is wound on the first stator core (5), a second DC phase V is wound on the second stator core (5) adjacent to the first stator core (5), a third DC phase W is wound on the third stator core (5) adjacent to the second stator core (5), a first DC phase U is wound on the fourth stator core (5), a second DC phase V is wound on the fifth stator core (5), and a third DC phase W is wound on the sixth stator core (5) adjacent to the fifth stator core (5), and the U, V, and W input terminals are set as terminals of the same name, and the opposite-name terminals of the first group of U, V, and W windings are connected to the same-name terminals of the second group of U, V, and W windings, and the windings are circulated in sequence; It also includes an output AC three-phase winding, with four adjacent stator cores (5) forming a group of virtual output cores, each group of virtual output cores being wound with an output closed coil, and output terminals A, B, and C being set as terminals with the same name, and the first group of winding terminals with different names being connected to the second group of winding terminals with the same name, and the circuit is circulated in sequence, so that the output closed coils with the same output phase are connected in series; A hub steel ring (2) is fixed on the outer ring of the rotor (3), and a rubber tire (1) is fixed on the outer ring of the hub steel ring (2).

2. The rare earth permanent magnet magnetic suspension AC / DC hub motor according to claim 1, characterized in that: The stator outer ring (7) is a magnetic steel ring or is made of silicon steel together with the stator iron core (5) to form an integral body.

3. The rare earth permanent magnet magnetic suspension AC / DC hub motor according to claim 1, characterized in that: The stator core (5) is a silicon steel core or the stator outer ring (7) and the stator core (5) are made of silicon steel to form a whole.

4. The rare earth permanent magnet magnetic suspension AC / DC wheel hub motor according to claim 1, characterized in that: The number of the stator magnets (6) is 12*N, wherein N represents a natural number.

5. The rare earth permanent magnet magnetic suspension AC / DC wheel hub motor according to claim 1, characterized in that: The rotor (3) and the wheel hub steel ring (2) are fixed via rotor rivets (9).

6. The rare earth permanent magnet magnetic suspension AC / DC wheel hub motor according to claim 1, characterized in that: A motor end cover (11) is arranged on one side of the rare earth permanent magnet magnetic suspension AC / DC hub motor, and a power lead wire (13) is opened on the motor end cover (11).

7. The rare earth permanent magnet magnetic suspension AC / DC wheel hub motor according to claim 1, characterized in that: The stator outer ring (7) and the stator inner disk (8) are connected via stator rivets (10).

8. The rare earth permanent magnet magnetic suspension AC / DC wheel hub motor according to claim 1, characterized in that: A stator connecting shaft (12) is fixed to one side of the stator inner disk (8).

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