An ultra-high speed motor

Abstract

An ultra-high-speed motor comprises an output shaft, an upper end cover and a lower end cover are fixed to the upper and lower ends of a hollow shell respectively, an upper end cover center hole is formed on the upper end cover, the output shaft is inserted into the upper end cover center hole and the upper end thereof extends from the front end of the upper end cover center hole, a plurality of transverse permanent magnet blocks for output shaft suspension are fixed on the output shaft, a plurality of upper end cover transverse permanent magnet blocks are fixed on the upper end cover, the transverse permanent magnet blocks for output shaft suspension are opposite to the upper end cover transverse permanent magnet blocks and the opposite magnetic polarities are the same, and an output shaft driving magnetic ring is fixed on the output shaft; the motor uses water cooling and air cooling to quickly cool down the shaft, the coil and the bearing to prevent the motor from being damaged due to high temperature, the shaft is subjected to the magnetic suspension force of the supporting magnetic blocks during rotation, the shaft runs in a balanced manner, has low noise and a long service life.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and more specifically to an ultra-high-speed motor with a rotation speed of more than 300,000 revolutions per minute. Background Art

[0002] At present, the speed of domestically produced motors is generally less than 50,000 revolutions per minute, while the high-speed motors produced abroad can reach 50,000 to 120,000 revolutions per minute. The price of foreign high-speed motors with a power of about 20 kilowatts is generally higher, and each high-speed motor costs 40,000 to 50,000 yuan.

[0003] In order to quickly fill hydrogen into hydrogen cylinders, we need to use a high-speed motor, but domestic motor manufacturers currently do not have motors that can reach more than 50,000 revolutions per minute for sale. So we need to develop a motor that can reach more than 50,000 revolutions per minute.

[0004] The difficulties in developing high-speed motors are: 1. At high speeds, the shaft and coil will generate a lot of heat, which must be removed in time, otherwise the motor will burn out due to high temperature. 2. The motor shaft generally needs to be fixed on the bearing. At high speeds, if the bearing has poor heat dissipation, it will burn out. Summary of the invention

[0005] The purpose of the present invention is to provide an ultra-high-speed motor to address the deficiencies of the prior art. It uses water cooling and air cooling to quickly cool down the shaft, coil and bearing to prevent the motor from being damaged by high temperature. During the rotation process, the shaft is subjected to the magnetic levitation force of the supporting magnetic block, and the shaft runs in a balanced manner, with low noise and long service life.

[0006] The technical solutions of the present invention are as follows:

[0007] An ultra-high-speed motor comprises an output shaft, an upper end cover and a lower end cover are fixed to the upper and lower ends of a hollow shell respectively, an upper end cover center hole is formed on the upper end cover, the output shaft is inserted into the upper end cover center hole and the upper end thereof extends from the front end of the upper end cover center hole, a plurality of transverse permanent magnet blocks for output shaft suspension are fixed on the output shaft, a plurality of upper end cover transverse permanent magnet blocks are fixed on the upper end cover, the transverse permanent magnet blocks for output shaft suspension are opposite to the transverse permanent magnet blocks of the upper end cover and the opposite magnetic polarities are the same, and an output shaft driving magnetic ring is fixed on the output shaft;

[0008] The upper end cover is fixed with an upper end cover vertical permanent magnet block, the output shaft is fixed with an output shaft upper end limit permanent magnet block, the output shaft upper end limit permanent magnet block is opposite to the upper end cover vertical permanent magnet block, and the magnetic polarity of the opposite surfaces is the same; the output shaft is fixed with an output shaft lower end limit permanent magnet block, the shaft bracket is fixed with a shaft bracket to the output shaft vertical permanent magnet block, the output shaft lower end limit permanent magnet block is opposite to the shaft bracket to the output shaft vertical permanent magnet block, and the magnetic polarity of the opposite surfaces is the same;

[0009] The upper end cover and the shaft support are fixed together by connecting screws, and an upper transverse permanent magnet block of the shaft support is fixed on the shaft support, and the upper transverse permanent magnet block of the shaft support is opposite to one of the magnets and the magnetic polarity of the opposite surface is the same;

[0010] A coil bracket is fixed on the shaft bracket, a coil fixing hole is formed on the coil bracket, and the electromagnetic coil is fixed in the coil fixing hole;

[0011] The outer rotor is inserted into the housing, the shaft bracket is fixed with a lower permanent magnet block, the outer rotor is fixed with a lower suspension transverse permanent magnet block, the lower permanent magnet block of the shaft bracket and the lower suspension transverse permanent magnet block of the outer rotor are opposite to each other and have the same relative magnetic polarity;

[0012] The outer rotor is fixed with an outer rotor upper limit permanent magnet block and an outer rotor lower limit permanent magnet block, the shaft bracket is fixed with a shaft bracket outer rotor limit permanent magnet block, and the shell is fixed with a shell outer rotor limit permanent magnet block. The outer rotor upper limit permanent magnet block is opposite to the shaft bracket outer rotor limit permanent magnet block, and the relative magnetic polarities are the same, and the outer rotor lower limit permanent magnet block is opposite to the shell outer rotor limit permanent magnet block, and the relative magnetic polarities are the same;

[0013] The inner wall of the outer rotor is fixed with an upper magnetic ring for outer rotor suspension, a first spacer, a driving magnetic ring, a second spacer and a main driving magnetic ring in sequence from top to bottom, and the coil on the coil support is opposite to the main driving magnetic ring;

[0014] The upper end cover is fixed with an outer rotor permanent magnet block, and the upper magnetic ring for outer rotor suspension is opposite to the upper end cover and the outer rotor permanent magnet block, and the relative magnetic polarities are the same;

[0015] The middle magnetic ring is fixed on the rotating shaft, and the two ends of the rotating shaft are respectively installed on the shaft seats, and the two shaft seats are respectively fixed on the upper end cover and the shaft bracket;

[0016] The driving magnetic ring is opposite to the intermediate magnetic ring, and the intermediate magnetic ring is opposite to the driving magnetic ring of the output shaft;

[0017] There are four intermediate magnetic rings, which are distributed in the housing in a circular array with the center of the outer rotor as the center;

[0018] The structure of the driving magnetic ring is: a plurality of outer arc-shaped magnetic blocks of the same size are formed into a circle, a plurality of inner arc-shaped magnetic blocks of the same size are formed into a circle, the inner arc-shaped magnetic blocks and the outer arc-shaped magnetic blocks are formed together, the magnetic polarities of two adjacent outer arc-shaped magnetic blocks are opposite, the magnetic polarities of two adjacent inner arc-shaped magnetic blocks are opposite, and the magnetic polarities of the opposite outer arc-shaped magnetic blocks and the inner arc-shaped magnetic blocks are opposite;

[0019] The structures of the main driving magnetic ring, the intermediate magnetic ring and the output shaft driving magnetic ring are the same as those of the driving magnetic ring. The number of the outer arc-shaped magnetic blocks of the driving magnetic ring is 12 to 64, the number of the outer arc-shaped magnetic blocks of the intermediate magnetic ring is 2 to 16, the number of the outer arc-shaped magnetic blocks of the output shaft driving magnetic ring is 2 to 8, and the number of the outer arc-shaped magnetic blocks of the main driving magnetic ring is four to twenty-four;

[0020] The upper limit permanent magnet block of the output shaft is a ring body, and half of the upper limit permanent magnet block of the output shaft is magnetized to the N pole and the other half is magnetized to the S pole in the order of up and down. The structure of the vertical permanent magnet block of the upper end cover is the same as that of the upper limit permanent magnet block of the output shaft;

[0021] The transverse permanent magnet block for output shaft suspension is a ring body, and half of the transverse permanent magnet blocks for output shaft suspension are magnetized to N poles and the other half are magnetized to S poles in the order of inside and outside. Half of the transverse permanent magnet blocks for suspension on the upper end cover are magnetized to N poles and the other half are magnetized to S poles in the order of inside and outside. The transverse permanent magnet block for output shaft suspension has the same structure as the lower end limit permanent magnet block of the output shaft, the transverse permanent magnet block on the upper end cover and the shaft bracket have the same structure as the vertical permanent magnet block of the output shaft, the lower permanent magnet block of the shaft bracket has the same structure as the transverse permanent magnet block on the upper end cover, the upper magnetic ring for outer rotor suspension and the shaft bracket have the same structure as the outer rotor limit permanent magnet block and the transverse permanent magnet block for output shaft suspension, the transverse permanent magnet block for lower suspension of the outer rotor has the same structure as the lower permanent magnet block of the shaft bracket, the upper limit permanent magnet block of the outer rotor and the lower limit permanent magnet block of the outer rotor have the same structure as the transverse permanent magnet block for output shaft suspension; the upper end cover has the same structure as the outer rotor permanent magnet block and the transverse permanent magnet block of the upper end cover;

[0022] The connecting sleeve is interference fit with the insert sleeve and is fixed on the shaft bracket, and the shaft bracket is fixed on the connecting sleeve with the outer rotor limiting permanent magnet block;

[0023] The diameter of the middle magnetic ring is smaller than that of the driving magnetic ring. The distance between the outer diameter surface of the middle magnetic ring and the driving magnetic ring is 50 to 100 microns. The distance between the outer diameter surface of the middle magnetic ring and the output shaft driving magnetic ring is 50 to 100 microns.

[0024] The plurality of transverse permanent magnet blocks for output shaft suspension are interference fit with the sleeve and fixed on the output shaft, the upper end limiting permanent magnet block of the output shaft is interference fit with the sleeve and fixed on the output shaft, the vertical permanent magnet block of the upper end cover is interference fit with the sleeve and fixed in the upper end cover center hole of the upper end cover, and the transverse permanent magnet block of the upper end cover is interference fit with the sleeve and fixed in the upper end cover center hole of the upper end cover.

[0025] The upper magnetic ring, the first spacer, the driving magnetic ring, the second spacer and the main driving magnetic ring are all interference-fitted with the sleeves and are fixed on the inner wall of the outer rotor.

[0026] An air inlet and an air outlet are formed on the shell, an outer rotor ventilation hole is formed on the outer rotor, the air inlet is opposite to the outer rotor ventilation hole, and the fan blows air toward the air inlet.

[0027] The shaft support has a shaft support center hole, the lower end of the shaft support extends out of the center hole of the lower end cover, and the electrical connection wire of the electromagnetic coil passes through and is led out from the shaft support center hole.

[0028] The upper end cover and the shaft support are formed with interconnected water cooling channels, and circulating cooling water is connected in the water cooling channels.

[0029] A waterproof sealing ring is clamped between the shaft bracket and the shell.

[0030] The outer diameter surfaces of the outer rotor, the intermediate magnetic ring and the output shaft driving magnetic ring are all covered with a layer of carbon fiber protective cover.

[0031] The beneficial effects of the present invention are:

[0032] It uses water cooling and air cooling to quickly cool down the shaft, coil and bearing to prevent the motor from being damaged by high temperature. The shaft is subjected to the magnetic levitation force of the supporting magnet during rotation, so the shaft runs balanced, with low noise and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the present invention;

[0034] Figure 2 It is a structural diagram of the output shaft part;

[0035] Figure 3 is a schematic diagram of the structure of the outer rotor;

[0036] Figure 4 It is a schematic diagram of the structure of the coil support;

[0037] Figure 5 is a three-dimensional schematic diagram of a coil support;

[0038] Figure 6 is a cross-sectional view of the front end cover;

[0039] Figure 7 is a three-dimensional schematic diagram of the front end cover;

[0040] Figure 8 is a structural schematic diagram of the shaft support;

[0041] Fig. 9 is a three-dimensional schematic diagram of the shaft support;

[0042] Fig.10 It is a schematic diagram of the structure when the front end cover and the shaft bracket are assembled together;

[0043] Fig.11It is a schematic diagram of the structure of the driving magnetic ring 8c;

[0044] Fig.12 A schematic diagram of the structure of the main driving magnetic ring 8e;

[0045] Fig.13 is a schematic structural diagram of the middle magnetic ring 10;

[0046] Fig.14 It is a schematic diagram of the structure of the output shaft driving magnetic ring 1c;

[0047] Fig.15 It is a schematic diagram of the structure of the transverse permanent magnet block 1b for output shaft suspension;

[0048] Fig.16 It is a structural schematic diagram of the transverse permanent magnet block 33 of the upper end cover;

[0049] Fig.17 It is a structural schematic diagram of the upper end limit permanent magnet block 1a of the output shaft;

[0050] Fig.18 It is a schematic structural diagram of the vertical permanent magnet block 32 of the upper end cover;

[0051] Fig.19 It is a schematic structural diagram of the connecting sleeve 5b. DETAILED DESCRIPTION

[0052] Example: See Figures 1 to 19 As shown, an ultra-high-speed motor includes an output shaft 1, characterized in that: an upper end cover 3 and a lower end cover 4 are fixed to the upper and lower ends of a hollow housing 2, respectively, an upper end cover center hole 31 is formed on the upper end cover 3, the output shaft 1 is inserted into the upper end cover center hole 31 and its upper end extends from the front end of the upper end cover center hole 31, a plurality of transverse permanent magnet blocks 1b for output shaft suspension are fixed on the output shaft 1, a plurality of transverse permanent magnet blocks 33 for upper end cover are fixed on the upper end cover 3, the transverse permanent magnet blocks 1b for output shaft suspension are opposite to the transverse permanent magnet blocks 33 for upper end cover and the opposite magnetic polarities are the same, and an output shaft driving magnetic ring 1c is fixed on the output shaft 1;

[0053] An upper end cover vertical permanent magnet block 32 is fixed on the upper end cover 3, and an output shaft upper end limit permanent magnet block 1a is fixed on the output shaft 1. The upper end limit permanent magnet block 1a of the output shaft is opposite to the upper end cover vertical permanent magnet block 32, and the magnetic polarity of the opposite surfaces is the same; an output shaft lower end limit permanent magnet block 1d is fixed on the output shaft 1, and a shaft bracket is fixed on the shaft bracket to the output shaft vertical permanent magnet block 52. The output shaft lower end limit permanent magnet block 1d is opposite to the shaft bracket to the output shaft vertical permanent magnet block 52, and the magnetic polarity of the opposite surfaces is the same;

[0054] The upper end cover 3 and the shaft support 5 are fixed together by connecting screws 6. The shaft support 5 is fixed with a shaft support upper transverse permanent magnet block 51. The shaft support upper transverse permanent magnet block 51 is opposite to one of the magnets and has the same magnetic polarity on the opposite surface.

[0055] A coil support 7 is fixed on the shaft support 5, and a coil fixing hole 71 is formed on the coil support 7, and the electromagnetic coil is fixed in the coil fixing hole 71;

[0056] The outer rotor 8 is inserted into the housing 2, the shaft support 5 is fixed with a shaft support lower permanent magnet block 53, and the outer rotor 8 is fixed with a transverse permanent magnet block 81 for outer rotor lower suspension. The shaft support lower permanent magnet block 53 and the outer rotor lower suspension transverse permanent magnet block 81 are opposite to each other and have the same relative magnetic polarity.

[0057] The outer rotor 8 is fixed with an outer rotor upper limit permanent magnet block 82 and an outer rotor lower limit permanent magnet block 83, the shaft bracket is fixed with a shaft bracket outer rotor limit permanent magnet block 54, the shell 2 is fixed with a shell outer rotor limit permanent magnet block 21, the outer rotor upper limit permanent magnet block 82 is opposite to the shaft bracket outer rotor limit permanent magnet block 54, and the relative magnetic polarity is the same, the outer rotor lower limit permanent magnet block 83 is opposite to the shell outer rotor limit permanent magnet block 21, and the relative magnetic polarity is the same;

[0058] The inner wall of the outer rotor 8 is fixed with an upper magnetic ring 8a for outer rotor suspension, a first spacer 8b, a driving magnetic ring 8c, a second spacer 8d and a main driving magnetic ring 8e in sequence from top to bottom, and the coil on the coil support 7 is opposite to the main driving magnetic ring 8e;

[0059] The upper end cover 3 is fixed with an outer rotor permanent magnet block 22, and the upper magnetic ring 8a for outer rotor suspension is opposite to the upper end cover and the outer rotor permanent magnet block 22, and the relative magnetic polarities are the same;

[0060] The middle magnetic ring 10 is fixed on the rotating shaft 11, and the two ends of the rotating shaft 11 are respectively mounted on the shaft seats 9, and the two shaft seats 9 are respectively fixed on the upper end cover 3 and the shaft support 5;

[0061] The driving magnetic ring 8c is opposite to the intermediate magnetic ring 10, and the intermediate magnetic ring 10 is opposite to the output shaft driving magnetic ring 1c;

[0062] There are four intermediate magnetic rings 10, and the four intermediate magnetic rings 10 are distributed in the housing 2 in a circular array with the center of the outer rotor 8 as the center;

[0063] The structure of the driving magnetic ring 8c is: a plurality of outer arc-shaped magnetic blocks c1 of the same size are formed into a circle in an annular array, a plurality of inner arc-shaped magnetic blocks c2 of the same size are formed into a circle in an annular array, the inner arc-shaped magnetic blocks c2 are formed together with the outer arc-shaped magnetic blocks c1, the magnetic polarities of two adjacent outer arc-shaped magnetic blocks c1 are opposite, the magnetic polarities of two adjacent inner arc-shaped magnetic blocks c2 are opposite, and the magnetic polarities of the outer arc-shaped magnetic blocks c1 and the inner arc-shaped magnetic blocks c2 relative to each other are opposite;

[0064] The structures of the main driving magnetic ring 8e, the intermediate magnetic ring 10 and the output shaft driving magnetic ring 1c are the same as those of the driving magnetic ring 8c. The number of the outer arc-shaped magnetic blocks c1 of the driving magnetic ring 8c is 12 to 64, the number of the outer arc-shaped magnetic blocks c1 of the intermediate magnetic ring 10 is 2 to 16, the number of the outer arc-shaped magnetic blocks c1 of the output shaft driving magnetic ring 1c is 2 to 8, and the number of the outer arc-shaped magnetic blocks c1 of the main driving magnetic ring 8e is four to twenty-four;

[0065] The output shaft upper end limit permanent magnet block 1a is a ring body, and the output shaft upper end limit permanent magnet block 1a has half of the entity a1 magnetized as N pole and the other half of the entity a2 magnetized as S pole in the order of up and down, and the structure of the upper end cover vertical permanent magnet block 32 is the same as that of the output shaft upper end limit permanent magnet block 1a;

[0066] The transverse permanent magnet block 1b for output shaft suspension is a ring body. The transverse permanent magnet block 1b for output shaft suspension is magnetized to N pole by half of the suspension entity b1 in the order of inside and outside, and magnetized to S pole by the other half of the suspension entity b2. The transverse permanent magnet block 33 of the upper end cover is magnetized to N pole by half of the suspension entity 331 in the order of inside and outside, and magnetized to S pole by the other half of the suspension entity 332. The transverse permanent magnet block 1b for output shaft suspension has the same structure as the output shaft lower end limit permanent magnet block 1d. The transverse permanent magnet block 33 of the upper end cover and the shaft bracket are aligned with the vertical permanent magnet block 52 of the output shaft. The structure is the same. The lower permanent magnet block 53 of the shaft support is the same as the structure of the transverse permanent magnet block 33 of the upper end cover. The upper magnetic ring 8a for outer rotor suspension and the shaft support have the same structure as the outer rotor limit permanent magnet block 54 and the transverse permanent magnet block 1b for output shaft suspension. The transverse permanent magnet block 81 for outer rotor lower suspension is the same as the structure of the lower permanent magnet block 53 of the shaft support. The upper limit permanent magnet block 82 of the outer rotor and the lower limit permanent magnet block 83 of the outer rotor are the same as the structure of the transverse permanent magnet block 1b for output shaft suspension. The upper end cover has the same structure as the outer rotor permanent magnet block 22 and the transverse permanent magnet block 33 of the upper end cover.

[0067] The connecting sleeve 5b is interference-fitted with the plug sleeve and is fixed on the shaft bracket 5, and the shaft bracket is fixed on the connecting sleeve 5b with the outer rotor limiting permanent magnet block 54;

[0068] The diameter of the intermediate magnetic ring 10 is smaller than that of the driving magnetic ring 8c. The distance between the outer diameter surface of the intermediate magnetic ring 10 and the driving magnetic ring 8c is 50 to 100 microns. The distance between the outer diameter surface of the intermediate magnetic ring 10 and the output shaft driving magnetic ring 1c is 50 to 100 microns.

[0069] The plurality of transverse permanent magnet blocks 1b for output shaft suspension are interference fit with the sleeve and are fixed on the output shaft 1, the upper end limit permanent magnet block 1a of the output shaft is interference fit with the sleeve and is fixed on the output shaft 1, the upper end cover vertical permanent magnet block 32 is interference fit with the sleeve and is fixed in the upper end cover center hole 31 of the upper end cover 3, and the upper end cover transverse permanent magnet block 33 is interference fit with the sleeve and is fixed in the upper end cover center hole 31 of the upper end cover 3.

[0070] The upper magnetic ring 8a, the first spacer sleeve 8b, the driving magnetic ring 8c, the second spacer sleeve 8d and the main driving magnetic ring 8e are all interference-fitted and fastened to the inner wall of the outer rotor 8.

[0071] The housing 2 is formed with an air inlet 23 and an air outlet 24 , and the outer rotor 8 is formed with an outer rotor ventilation hole 8 f . The air inlet 23 is opposite to the outer rotor ventilation hole 8 f , and the fan 12 blows air toward the air inlet 23 .

[0072] The shaft support 5 has a shaft support center hole 5a, the lower end of the shaft support 5 extends out from the center hole of the lower end cover 4, and the electrical connection wire of the electromagnetic coil passes through and is led out from the shaft support center hole 5a.

[0073] The upper end cover 3 and the shaft support 5 are formed with interconnected water cooling channels S, and the water cooling channels S are connected with circulating cooling water.

[0074] A waterproof sealing ring 13 is sandwiched between the shaft bracket 5 and the housing 2 .

[0075] The outer diameter surfaces of the outer rotor 8, the intermediate magnetic ring 10 and the output shaft driving magnetic ring 1c are all covered with a layer of carbon fiber protective cover.

[0076] Working principle: The coil controller controls the current on the electromagnetic coil on the coil support 7 to change continuously, so that the magnetic field of the electromagnetic coil changes continuously, causing the main driving magnetic ring 8e to rotate. This is the same as the principle of the coil driving shaft of the brushless motor. The coil controller can use the existing brushless motor coil controller.

[0077] The rotation of the main driving magnetic ring 8e drives the driving magnetic ring 8c to rotate, the driving magnetic ring 8c drives the intermediate magnetic ring 10 to rotate, and the intermediate magnetic ring 10 drives the output shaft driving magnetic ring 1c to rotate. The rotation speed of the main driving magnetic ring 8e is 30,000 to 60,000 revolutions per minute. The output shaft driving magnetic ring 1c is driven to rotate by the intermediate magnetic ring 10 to accelerate, so that the rotation speed of the output shaft 1 can reach 180,000 to 360,000 revolutions.

[0078] It also uses air cooling and water cooling to reduce the overall temperature, ensuring that during operation, the output shaft 1 will not be damaged by overheating, and the shaft seat 9 and the outer rotor 8 will not be damaged by overheating.

Claims

1. An ultra-high-speed motor, comprising an output shaft (1), characterized in that: An upper end cover (3) and a lower end cover (4) are fixed to the upper and lower ends of the hollow housing (2), respectively; an upper end cover center hole (31) is formed on the upper end cover (3); the output shaft (1) is inserted into the upper end cover center hole (31) and its upper end extends from the front end of the upper end cover center hole (31); a plurality of output shaft suspension transverse permanent magnet blocks (1b) are fixed to the output shaft (1); a plurality of upper end cover transverse permanent magnet blocks (33) are fixed to the upper end cover (3); the output shaft suspension transverse permanent magnet blocks (1b) are opposite to the upper end cover transverse permanent magnet blocks (33) and the opposite surfaces have the same magnetic polarity; an output shaft driving magnetic ring (1c) is fixed to the output shaft (1); An upper end cover vertical permanent magnet block (32) is fixed on the upper end cover (3); an output shaft upper end limit permanent magnet block (1a) is fixed on the output shaft (1); the output shaft upper end limit permanent magnet block (1a) is opposite to the upper end cover vertical permanent magnet block (32), and the magnetic polarities of the opposite surfaces are the same; an output shaft lower end limit permanent magnet block (1d) is fixed on the output shaft (1); a shaft support vertical permanent magnet block (52) is fixed on the shaft support (5); the output shaft lower end limit permanent magnet block (1d) is opposite to the shaft support vertical permanent magnet block (52), and the magnetic polarities of the opposite surfaces are the same; The upper end cover (3) and the shaft support (5) are fixed together by connecting screws (6); an upper transverse permanent magnet block (51) of the shaft support is fixed on the shaft support (5); the upper transverse permanent magnet block (51) of the shaft support is opposite to one of the magnets and the opposite magnetic polarities are the same; A coil support (7) is fixed on the shaft support (5), a coil fixing hole (71) is formed on the coil support (7), and the electromagnetic coil is fixed in the coil fixing hole (71); The outer rotor (8) is inserted into the housing (2), a shaft support lower permanent magnet block (53) is fixed on the shaft support (5), and a transverse permanent magnet block (81) for suspension of the outer rotor lower portion is fixed on the outer rotor (8), the shaft support lower permanent magnet block (53) and the transverse permanent magnet block (81) for suspension of the outer rotor lower portion are opposite to each other and have the same surface magnetic polarity; An outer rotor upper limit permanent magnet block (82) and an outer rotor lower limit permanent magnet block (83) are fixed on the outer rotor (8); a shaft bracket-to-outer rotor limit permanent magnet block (54) is fixed on the shaft bracket (5); a shell-to-outer rotor limit permanent magnet block (21) is fixed on the shell (2); the outer rotor upper limit permanent magnet block (82) and the shaft bracket-to-outer rotor limit permanent magnet block (54) are opposite to each other and have the same relative surface magnetic polarity; and the outer rotor lower limit permanent magnet block (83) and the shell-to-outer rotor limit permanent magnet block (21) are opposite to each other and have the same relative surface magnetic polarity; An upper magnetic ring (8a) for suspending the outer rotor, a first spacer (8b), a driving magnetic ring (8c), a second spacer (8d) and a main driving magnetic ring (8e) are fixed to the inner wall of the outer rotor (8) in order from top to bottom, and the coil on the coil support (7) is opposite to the main driving magnetic ring (8e); An upper end cover-to-external rotor permanent magnet block (22) is fixed on the upper end cover (3), and an upper magnetic ring (8a) for suspension of the external rotor is opposite to the upper end cover-to-external rotor permanent magnet block (22), and the magnetic polarities of the opposite surfaces are the same; The middle magnetic ring (10) is fixed on the rotating shaft (11), the two ends of the rotating shaft (11) are respectively mounted on the shaft seats (9), and the two shaft seats (9) are respectively fixed on the upper end cover (3) and the shaft support (5); The driving magnetic ring (8c) is opposite to the intermediate magnetic ring (10), and the intermediate magnetic ring (10) is opposite to the output shaft driving magnetic ring (1c); There are four intermediate magnetic rings (10), and the four intermediate magnetic rings (10) are distributed in the housing (2) in a circular array with the center of the outer rotor (8) as the center. The structure of the driving magnetic ring (8c) is as follows: a plurality of outer arc-shaped magnetic blocks (c1) of the same size are formed into a circular array together, a plurality of inner arc-shaped magnetic blocks (c2) of the same size are formed into a circular array together, the inner arc-shaped magnetic blocks (c2) and the outer arc-shaped magnetic blocks (c1) are formed together, the magnetic polarities of two adjacent outer arc-shaped magnetic blocks (c1) are opposite, the magnetic polarities of two adjacent inner arc-shaped magnetic blocks (c2) are opposite, and the magnetic polarities of the outer arc-shaped magnetic blocks (c1) and the inner arc-shaped magnetic blocks (c2) that are opposite to each other are opposite; The structures of the main driving magnetic ring (8e), the intermediate magnetic ring (10) and the output shaft driving magnetic ring (1c) are the same as those of the driving magnetic ring (8c); the number of the outer arc-shaped magnetic blocks (c1) of the driving magnetic ring (8c) is 12 to 64, the number of the outer arc-shaped magnetic blocks (c1) of the intermediate magnetic ring (10) is 2 to 16, the number of the outer arc-shaped magnetic blocks (c1) of the output shaft driving magnetic ring (1c) is 2 to 8, and the number of the outer arc-shaped magnetic blocks (c1) of the main driving magnetic ring (8e) is four to twenty-four; The output shaft upper end limit permanent magnet block (1a) is a ring body, wherein half of the entity (a1) of the output shaft upper end limit permanent magnet block (1a) is magnetized to an N pole and the other half of the entity (a2) is magnetized to an S pole in an up-down order, and the structure of the upper end cover vertical permanent magnet block (32) is the same as the structure of the output shaft upper end limit permanent magnet block (1a); The output shaft suspension transverse permanent magnet block (1b) is a ring body. The output shaft suspension transverse permanent magnet block (1b) is magnetized to an N pole in half of the suspension entity (b1) and to an S pole in the order of inside and outside. The upper end cover transverse permanent magnet block (33) is magnetized to an N pole in half of the suspension entity (331) and to an S pole in the order of inside and outside. The output shaft suspension transverse permanent magnet block (1b) is the same structure as the output shaft lower end limit permanent magnet block (1d). The upper end cover transverse permanent magnet block (33) and the shaft bracket are connected to the output shaft vertical permanent magnet block (52). The shaft bracket has the same structure, the lower permanent magnet block (53) of the shaft bracket has the same structure as the transverse permanent magnet block (33) of the upper end cover, the upper magnetic ring (8a) for outer rotor suspension and the shaft bracket have the same structure as the outer rotor limit permanent magnet block (54) and the transverse permanent magnet block (1b) for output shaft suspension, the transverse permanent magnet block (81) for outer rotor lower suspension has the same structure as the lower permanent magnet block (53) of the shaft bracket, the upper limit permanent magnet block (82) of the outer rotor and the lower limit permanent magnet block (83) of the outer rotor have the same structure as the transverse permanent magnet block (1b) for output shaft suspension; the upper end cover has the same structure as the outer rotor permanent magnet block (22) and the transverse permanent magnet block (33) of the upper end cover; The connecting sleeve (5b) is interference-fitted with the insert sleeve and is fixedly secured to the shaft support (5); the shaft support is fixed to the connecting sleeve (5b) for the outer rotor limiting permanent magnet block (54); The diameter of the intermediate magnetic ring (10) is smaller than that of the driving magnetic ring (8c); the distance between the outer diameter surface of the intermediate magnetic ring (10) and the driving magnetic ring (8c) is 50 to 100 microns; and the distance between the outer diameter surface of the intermediate magnetic ring (10) and the output shaft driving magnetic ring (1c) is 50 to 100 microns.

2. The ultra-high speed motor according to claim 1, characterized in that: A plurality of transverse permanent magnet blocks (1b) for output shaft suspension are interference-fitted with a sleeve and fixedly secured on the output shaft (1); a permanent magnet block (1a) for limiting the output shaft upper end is interference-fitted with a sleeve and fixedly secured on the output shaft (1); a vertical permanent magnet block (32) for the upper end cover is interference-fitted with a sleeve and fixedly secured in an upper end cover center hole (31) of the upper end cover (3); and a transverse permanent magnet block (33) for the upper end cover is interference-fitted with a sleeve and fixedly secured in an upper end cover center hole (31) of the upper end cover (3).

3. The ultra-high speed motor according to claim 1, characterized in that: The upper magnetic ring (8a), the first spacer (8b), the driving magnetic ring (8c), the second spacer (8d) and the main driving magnetic ring (8e) are all interference-fitted and plug-in sleeves and are fixed on the inner wall of the outer rotor (8).

4. The ultra-high speed motor according to claim 1, characterized in that: An air inlet hole (23) and an air outlet hole (24) are formed on the shell (2), and an outer rotor ventilation hole (8f) is formed on the outer rotor (8). The air inlet hole (23) is opposite to the outer rotor ventilation hole (8f), and the fan (12) blows air toward the air inlet hole (23).

5. The ultra-high speed motor according to claim 1, characterized in that: The shaft support (5) has a shaft support center hole (5a), the lower end of the shaft support (5) extends out from the center hole of the lower end cover (4), and the electrical connection wire of the electromagnetic coil passes through and is led out from the shaft support center hole (5a).

6. The ultra-high speed motor according to claim 1, characterized in that: Interconnected water cooling channels (S) are formed on the upper end cover (3) and the shaft support (5), and circulating cooling water is connected to the water cooling channels (S).

7. The ultra-high speed motor according to claim 1, characterized in that: A waterproof sealing ring (13) is clamped between the shaft support (5) and the housing (2).

8. The ultra-high speed motor according to claim 1, characterized in that: The outer diameter surfaces of the outer rotor (8), the intermediate magnetic ring (10) and the output shaft driving magnetic ring (1c) are all covered with a layer of carbon fiber protective sleeve.

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