• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention discloses a magnetic suspension flywheel energy storage device with virtual shaft for electric vehicles, wherein the flywheel rotor has a lower ring body, a master cylinder, an upper ring body and a radially twisted rotor yoke which are connected to one another and have an identical outer diameter, and with the central one a central cylinder body is coaxially connected to the upper surface of the master cylinder, and an elongated cylinder top is coaxially connected to the center of the upper surface of the central cylinder body, and the upper end of the elongated cylinder top passes upward coaxially through the stationary portion of the five degrees of freedom magnetic bearing; and wherein the lower ring body and the central cylinder body are each a solid disk, and wherein an annular groove is formed between the upper ring body and the central cylinder body, and wherein the rotating portion of the five-degree of freedom magnetic bearing is coaxially embedded in the annular groove, and wherein a cylindrical recess is formed between the master cylinder and the lower ring body, in which the conduction plate is coaxially embedded; this allows the gyroscopic effect to be better suppressed in order to achieve good stability, a high degree of integration and good load-bearing capacity.
    公开号:CH716188B1
    申请号:CH01706/19
    申请日:2019-03-11
    公开日:2021-08-31
    发明作者:Zhang Weiyu；Wang Jianping；Yang Hengkun；Zhu Pengfei；Cheng Ling；Zhang Lindong；Zhu Huangqiu
    申请人:Univ Jiangsu；
    IPC主号:
    专利说明:

    TECHNICAL AREA
    The present invention relates to a flywheel energy storage device, in particular a vehicle-mounted magnetic suspension flywheel energy storage device for electric vehicles.
    STATE OF THE ART
    As a mechanical energy storage device, the flywheel energy storage device has advantages of high charging and discharging efficiency, high specific power, low pollution and long life, and is an ideal auxiliary drive battery for electric vehicles. Currently, most of the flywheel energy storage devices have has a topological structure with a long main wave of inertia. If the energy storage device is disturbed by the outside environment, a gyroscopic effect is likely to occur, so that it is not suitable for application to an on-vehicle energy storage device. Although the flywheel energy storage device provided with a spherical surface and having a long main shaft can suppress the gyroscopic effect to some extent, instability inevitably occurs due to the large axial length of the main shaft. The disk-like flywheel energy storage device has a short main inertia shaft and a disk-like flywheel structure and can suppress the gyroscopic effect better, but the disk motor still drives the flywheel rotor through the motor rotating shaft, so the “shortwave” structure is still one of the “with waves” structures “There will still be a certain gyroscopic effect, which will affect the stability of the flywheel battery system. In addition, a two degree of freedom magnetic bearing and a three degree of freedom magnetic bearing are used for the suspension support system of the disc-type flywheel energy storage device, which are distributed on the upper and lower sides of the axial direction of the flywheel to achieve distributed control, thereby increasing the axial length of the Energy storage device is caused and a high degree of integration cannot be realized.
    In the vehicle-mounted flywheel energy storage device, the flywheel rotor is usually supported by magnetic bearings, especially in metal flywheel rotors with cost advantages, if the design goal of a high amount of energy storage is to be achieved, the weight and volume of the flywheel are large, whereby the load capacity of the magnetic bearing to accommodate the weight of the flywheel rotor should be adequately dimensioned. The magnetic bearings are usually distributed symmetrically in the axial direction around the flywheel rotor. In order to support a greater gravitational force of the rotor, the difference value between the absolute values of the magnetic density of the upper and lower axial air gap is large, which makes the current of the axial coil very large, which in turn leads to a higher power consumption of the system. Because of this, it is particularly important to develop a flywheel battery carrier system with a large load capacity, low power consumption, and a high degree of integration. Furthermore, in the topological structure of most current flywheel energy storage devices, the flywheels, motors, and magnetic bearings are still arranged independently of each other, even if in some topological structures the flywheels and the motors are integrated, it is still a structure with a Main inertia wave, so there is a lower degree of integration, which is not conducive to the assembly in a small space of an electric vehicle. Therefore, it is an inevitable trend for the development of flywheel batteries to further increase the degree of integration of the whole system of the flywheel battery, that is, to further integrate the motors, the flywheels and the magnetic suspension support system to a high degree. In addition, the cost of the flywheel energy storage device is to be further reduced in order to realize a large-scale application of the flywheel energy storage device on the vehicle. Most flywheels are made of high strength composite materials, so they are expensive and difficult to distribute and use on a large scale. Although the flywheel made of metal material has the advantage of low cost, its weight and volume increase several times on the same amount of energy storage, which is not suitable for the vehicle environment. Because of this, it is of great importance to design, based on a satisfactory amount of energy storage, a new on-vehicle flywheel energy storage device having high stability, high degree of integration, high load capacity, low energy consumption and low cost.
    CONTENT OF THE PRESENT INVENTION
    The present invention aims to utilize the space of the vehicle flywheel battery to the highest degree and to improve the stability, and to provide a magnetic suspension flywheel energy storage device with virtual shafts for electric vehicles, which is high in stability in terms of structure , a high degree of integration, a high load capacity, a low cost and a low power consumption, etc. of the on-vehicle flywheel energy storage device can be realized.
    The present invention is realized by the technical features of claim 1. Preferred embodiments emerge from the dependent claims.
    In the context of the invention, the outermost part of the device can be a housing, wherein a five-degree magnetic bearing, a flywheel rotor and an induction sensor are coaxially arranged in the housing cavity, and wherein the five-degree magnetic bearing comprises a stationary section and a rotating section, and wherein the induction sensor comprises a motor stator and a rotatable motor lead plate which is coaxially placed on the exterior of the motor stator, and wherein the flywheel rotor, from bottom to top, a lower ring body, a master cylinder, an upper ring body and a radially twisted rotor yoke, which are fixed one after the other are connected and have an identical outer diameter, and a central cylinder body is fixedly connected coaxially to the central upper surface of the main cylinder, and an elongated cylinder top is coaxially fixedly connected to the center of the upper surface of the central cylinder body en, and wherein the upper end of the elongated cylinder top passes upwardly coaxially through the stationary portion of the five degrees of freedom magnetic bearing; and wherein the lower ring body and the middle cylinder body are each a solid disk, and wherein the inner diameter of the upper ring body is greater than the inner diameter of the lower ring body, and wherein the inner diameter of the lower ring body is greater than the outer diameter of the middle cylinder body, and wherein between the upper ring body and the middle cylinder body an annular groove is formed, and wherein a rotating portion of the five degrees of freedom magnetic bearing is coaxially embedded in the annular groove, and wherein a cylindrical recess is formed between the master cylinder and the lower ring body, in which the motor circuit board is coaxially is embedded.
    Preferably, the stationary portion of the five degrees of freedom magnetic bearing comprises an axial stator, a radially twisted stator and a radial permanent magnet, wherein the uppermost part of the axial stator is an upper fixed disk, and the underside of the upper fixed disk by a connecting cylinder ring with a axial stator yoke is connected, and wherein the radially inner side of the lower surface of the axial stator yoke with an axial inner ring stator pole, the center with an axial outer ring stator pole and the outside with an axial circumferential receiving pole, and wherein an axial control coil on the axial outer ring -Stator pole is wound; and wherein an annular radial aluminum magnet insulating ring, a radial inner stator ring, a radial permanent magnet and the radially twisted stator are closely fitted on an outer wall of the axial stator yoke and the axial circumferential receiving pole, and the radial permanent magnet has magnetization along the radial direction from the inside to the outside ; and wherein the radially twisted stator is formed by a radially twisted stator yoke, a radial stator pole, a twisted stator pole and a radially twisted receiving pole, and wherein the radially twisted stator yoke is formed in the shape of an annular body, and wherein from its upper end surface along the radial direction 3 radial stator poles and 3 twisted sub-poles extend outward, and wherein the 3-radial stator poles and the 3-twisted sub-poles are offset along the circumferential direction with a distance from each other evenly distributed, and wherein from the lower end face of the radially twisted stator yoke along the radial direction of the radially twisted receiving pole extends outward, and where an outer side surface of the radially twisted receiving pole is formed as a spherical surface protruding outwardly along the radial direction, and a radial control coil is wound on the radial stator pole, while on the twisted one n stator pole a twisted control coil is wound.
    Preferably, the rotating portion of the five degrees of freedom magnetic bearing comprises an axial rotor of the ring body arranged in the annular groove formed between the upper ring body and the central cylinder body, the axial rotor being formed by an axial inner ring rotor pole, an axial outer ring rotor pole and a axial rotor yoke, which are arranged coaxially to each other, is formed, and wherein the upper surface of the axial rotor yoke is connected to the lower surfaces of the axial inner ring rotor pole and the axial outer ring rotor pole, and wherein between the axial inner ring rotor pole and the axial Outer ring rotor pole is embedded a second axial magnetic insulating aluminum ring; and wherein exactly below the axial inner ring stator pole is an axial inner ring permanent magnet firmly attached to an outer wall of the central cylinder body, and wherein the axial inner ring rotor pole is located exactly below the axial inner ring stator pole, and where is exactly below the axial circumferential receiving pole the axial outer ring rotor pole is located, and wherein an axial outer ring permanent magnet is fixedly connected to the lower surface of the axial rotor yoke, and wherein between an inner wall of the axial outer ring permanent magnet, an inner wall of the axial rotor and an outer wall of the axial inner ring permanent magnet first axial aluminum magnet insulating ring is firmly embedded, and wherein between an outer wall of the axial outer ring permanent magnet and the axial rotor, a third axial aluminum magnet insulating ring is firmly embedded, and wherein the axial inner ring permanent magnet along the axial direction upward one Has magnetization, while the axial outer ring permanent magnet has magnetization along the axial downward direction.
    Compared to the prior art, the present invention has the following advantages: 1. The carrier system uses a highly integrated five degrees of freedom magnetic bearing with one-sided suspension support, compared to a carrier structure in which the flywheels, motors and magnetic bearings are arranged separately and a main inertia shaft is provided, in the present invention all magnetic bearings are integrated on one side even inside the flywheel rotor, whereby the axial size and the volume are reduced. An axial magnetization process is used with both permanent magnets; in comparison to the axial magnetization of the individual permanent magnet, not only is the axial air gap magnetic flux increased, while the length of the axial permanent magnet is compressed, which increases the axial load-bearing capacity. With a sophisticated inverter, the radial control coil is driven, whereby the energy consumption and the cost are reduced, so that a five-degree of freedom magnetic bearing with a good load capacity, a low power consumption and a small volume is realized. 2. The upper end and the lower end of the flywheel rotor are slotted, in the present invention a separate five degrees of freedom magnetic bearing is used, whereby the axial permanent magnet of the magnetic bearing is inserted into the flywheel rotor, while the five degrees of freedom magnetic bearing is embedded in the upper slot of the flywheel rotor , and wherein the lead plate of the motor is closely connected to the wall of the lower slot of the flywheel rotor, and wherein the stator of the motor and the coil are embedded in the lower slot, whereby the five degree of freedom magnetic bearing, the motor and the flywheel are integrated with each other, thereby the energy storage amount of the flywheel is not impaired, while the axial length is reduced significantly, so that the volume of the flywheel battery is reduced, the degree of integration is increased and the gyroscopic effect is suppressed. In the middle of the top slot of the flywheel rotor there is a pillar top auxiliary rotor in the shape of a narrow cylinder, where the pillar top auxiliary rotor does not go through the flywheel rotor, therefore it is not connected to the motor and belongs entirely to the internal structure of the flywheel rotor, therefore the narrow pillar top auxiliary rotor also becomes referred to as a "virtual shaft" and used to mount an auxiliary bearing and sensor. Since the flywheel rotor is connected to the motor without a main inertia shaft when it rotates, the gyroscopic effect can be better suppressed to improve the stability of the overall system. 3. The flywheel rotor is designed in the form of an upper pillar disk with a virtual shaft, the central upper pillar part and an auxiliary bearing fitting together in order to provide protection for the flywheel and the lower motor. The main energy storage point of the flywheel rotor is the central solid disk, compared to a disk flywheel of the same size with a central hole, the energy storage density of the flywheel rotor in the form of a solid disk can be doubled. The flywheel is made of metal materials, which reduces the cost while realizing the same energy storage effect. 4. The designed motor is a multi-arc induction motor in which the stator of a conventional induction motor is replaced with a structure of a multi-arc stator. As a result, a torque is made available in the tangential direction, as a result of which the flywheel rotor rotates; in addition, a control force can also be made available in the normal direction in order to carry out a positioning control and a radial auxiliary control with two degrees of freedom. The engine structure is simple in structure and easy to maintain and repair. 5. The outer surface of the lower receiving pole of the radially twisted stator pole is machined as a spherical surface, the property of the spherical shape being used to better suppress the gyroscopic effect. 6. On the upper part of the radially twisted stator pole are arranged 6 magnetic poles, 3 radial stator poles and 3 twisted stator poles, which are offset with a spacing from each other, the 3 radial stator poles and the 3 twisted stator poles are evenly distributed along the circumferential direction and are offset from one another by an angle of 120 degrees . This cleverly integrates the radial stator and the twisted stator on the same stator, increasing the integration rate and reducing the volume and cost. 7. The mounting brackets for the sensors are each arranged on the upper part of a prototype, with the axial sensor and the radial sensor each being installed in a concentrated manner on the bracket, which facilitates assembly and maintenance. 8. In the present invention, the five degrees of freedom magnetic bearing, the flywheel and the motor are sealed in a vacuum housing, thereby eliminating the wear on the flywheel caused by air friction. A large number of cooling fins are used on the outer wall, which solves the temperature problem with the temperature rise of the flywheel rotor at high speed and reduces energy consumption.
    BRIEF DESCRIPTION OF THE DRAWING
    FIG. 1 shows a perspective structural view of the present invention. Figure 2 shows a front view of the internal structure of the present invention. Figure 3 shows a structural sectional view of an outer housing according to Figure 1. Figure 4 shows an enlarged perspective sectional view of a flywheel rotor according to Figure 1. Figure 5 shows an enlarged sectional view of the three-dimensional structure of an axial stator of the five degrees of freedom magnetic bearing according to Figure 1. Figure 6 shows an enlarged sectional view of the three-dimensional Structure of an axial rotor of the five degrees of freedom magnetic bearing according to Figure 1. Figure 7 shows an enlarged sectional view of the three-dimensional structure of a radially twisted stator of the five degrees of freedom magnetic bearing according to Figure 1. Figure 8 shows a sectional view of the assembly structure of a five degrees of freedom magnetic bearing and a flywheel rotor according to Figure 1. Figure 9 shows Fig. 13 is a sectional view of the assembly structure of an axial stator and an axial rotor and other correlation elements of the five degrees of freedom magnetic bearing and a flywheel rotor in the axial direction. Fig. 10 is a sectional view showing the assembly structure of a radial / twisted stator and other correlation elements of the five-degree of freedom magnetic bearing and a flywheel rotor in the radial direction. FIG. 11 shows an enlarged sectional view of the assembly structure of an axial and radial sensor holder according to FIG. 1. FIG. 12 shows a sectional view of a three-dimensional structure of a radial sensor holder according to FIG. 11. FIG. 13 shows a sectional view of a three-dimensional structure of an axial sensor holder according to FIG Mounting structure of a motor and a flywheel rotor according to FIG. 1. FIG. 15 shows a plan view of the mounting structure of a motor and a flywheel rotor according to FIG. 1. FIG. 16 shows an enlarged structural view of a motor stator according to FIG -Magnetic bearings implemented a static passive suspension. Figure 18 shows a schematic diagram of the operation of the present invention in which radial two degree of freedom equilibrium control and twisted mating control are implemented. Figure 19 shows a schematic diagram of the present invention in which axial single degree of freedom equilibrium control is implemented.
    List of reference symbols
    11 Upper end cap 111 Upper disc 112 Middle ring body 113 Lower ring body 114 Third cooling fin 115 Second cooling fin 12 Housing body 121 First cooling fin 122 End cap connection holder 13 Lower end cap 21 Radial sensor holder 211 Upper ring body of the radial sensor 212 Lower ring body of the radial sensor 22 Axial Sensor bracket 221 Axial sensor disk 222 Axial sensor ring body 23 Ring body fastening piece 31 Axial sensor 32 Radial sensor 4 Auxiliary bearing 51 Axial stator 511 Upper fixed disk 512 Connecting cylinder ring 513 Axial stator yoke 514 Axial inner ring stator pole 515 Axial outer ring stator pole 516 Axial circumferential receiving pole 52 Axial circumferential receiving pole 52 Inner ring permanent magnet 53 Axial outer ring permanent magnet 54 Axial rotor 541 Axial inner ring rotor pole 542 Axial rotor yoke 543 Axial outer ring rotor pole 55 First axial aluminum magnet insulation ring 56 Second axial aluminum magnet insulation ring 57 Third axial aluminum m agnetisolierring 61 Radially twisted stator 611 Radial stator pole 612 Radially twisted stator yoke 613 Twisted stator pole 614 Radially twisted mounting pole 62 Radial inner stator ring 63 Radial permanent magnet 64 Radial aluminum magnet isolating ring 71 Axial control coil 72 Radial control coil Main cylinder 73 Rotary cylinder control coil 8 Rotation 84 Lower Radial Twisted Rotor Pole 85 Radially Twisted Rotor Yoke 86 Upper Annular Body 87 Central Cylinder Body 88 Lower Annular Body 91 Motor Stator 911 Upper Disc 912 Cylindrical Motor Stator Pole 913 Lower Disc 914 Motor Bolt Hole 92 Lead Plate 93 Motor Coil
    DETAILED DESCRIPTION
    As shown in Figures 1 and 2, the outermost part of the present invention is a housing formed by a housing body 12 in the form of a hollow cylinder, an upper end cap 11 and a lower end cap 13, the upper end of the housing body 12 eng with the upper end cap 11 is fixedly connected, while the lower end of the housing body 12 is tightly connected to the lower end cap 13, and wherein the housing body 12, the upper end cap 11 and the lower end cap 13 enclose a housing cavity.
    In the housing cavity, a five degree of freedom magnetic bearing, a flywheel rotor 8 and an induction sensor with a plurality of arcs are coaxially distributed. The five degrees of freedom magnetic bearing includes a stationary portion and a rotating portion, the stationary portion having an axial stator 51, a radially twisted stator 61, and a radial permanent magnet 63, and so on. includes; and wherein the rotating portion comprises an axial rotor 51, an axial inner-ring permanent magnet 52, an axial outer-ring permanent magnet 53, and a five-degree magnetic bearing, and so on. The rotating portion of the five degrees of freedom magnetic bearing and the multi-arc induction sensor are embedded in the top and bottom of the flywheel rotor 8, respectively. The housing is shown as in FIG. 3, the upper end cap 11 and the lower end cap 13, viewed from the outside, each being in the form of a cylindrical step. A cylindrical hole is provided in the center of the upper end cap 11 to facilitate the assembly of the auxiliary bearing 4. On an outer side wall of the housing body 12, 4 end cap connection holders 122 of the same size are evenly distributed along the circumferential direction, with a hole for threading being provided at the upper and lower ends of the end cap connection holder 12, around the upper end cap 11 and the lower end cap 13 by a screw, respectively to connect the housing body 12 firmly. Between all two end cap connection holders 122, four first cooling fins 121 of the same shape are evenly distributed, with four square heat dissipation slots being evenly cut on an outer side wall of the housing body 12 between all two first cooling fins 121, which are distributed in two rows and two columns and have an identical shape. The upper end cap 11 is formed in such a way that an upper disk 111 provided with a central cylindrical hole, a middle ring 112 and a lower ring 113 are connected one behind the other, the outer diameter of the middle ring 112 being identical to the outer diameter of the upper disk 111, while the inner diameter of the middle Ring 112 is identical to the outside diameter of lower ring 111, and wherein the outside diameter of middle ring 112 is smaller than the outside diameter of lower ring 113, and wherein the inside diameter of middle ring 112 is much larger than the inside diameter of upper disc 111. The upper and lower end surfaces of the middle ring 112 are closely connected to the lower end surface of the upper disk 111 and the upper end surface of the lower disk, respectively. Thereby, the outer side surface of the upper disc 111, the outer side surface of the middle ring 112, and the upper end surface of the lower disc 113 form a stair-step cylindrical shape. On the upper end surface of the lower disk 113, second cooling fins 115 are evenly distributed along the circumferential direction 24, the second cooling fin 115 being formed in the shape of a triangular piece, and a right-angled underside of the second cooling fin 115 being connected to the upper end surface of the lower ring 113, while another is rectangular Surface of the second cooling fin 115 is connected to an outer side surface of the upper disk 111 and an outer side surface of the middle ring 112. On the upper surface of the upper disk 111, square third cooling fins 114 of the same shape are uniformly distributed along the circumferential direction 6. In the upper disk 111, an annular groove is provided facing the central hole, and in the bottom of the annular groove 4 cylindrical holes are provided along the circumferential direction, and tapping is performed to fix and mount the axial sensor bracket 22 with a screw. In the lower ring 113, four end cap connection hole positions are evenly distributed along the circumferential direction to match the hole positions of the end cap connection holder 122 of the case body 12. The upper end cap 11 and the lower end cap 13 are arranged longitudinally symmetrically with respect to the housing body 12, with no cylindrical hole being provided in the middle of the lower end cap 13, and the end face of the bottom being a solid disc, the other structure being the same as that of the upper end cap 11and is not explained in more detail here. With the arrangement of a large amount of cooling fins and heat dissipation slots, the heat generated by rotating the flywheel rotor 8 at high speed can be effectively dissipated. The housing body 12, the upper end cap 11 and the lower end cap 13 as well as the axial sensor holder 22 form a closed vacuum chamber, whereby the air friction wear is effectively reduced.
    FIG. 3 shows a perspective view of a flywheel rotor 8; the main body of the flywheel rotor 8 is formed by a main cylinder body 82, an upper ring body 86, a lower ring body 8, a central cylinder body 87, an elongated cylinder upper part 81, a radially twisted rotor yoke 85, an upper radially twisted rotor pole 83 and a lower radially twisted rotor pole 84. The periphery is a cylindrical structure, with an elongated upper cylinder part 81, which forms a virtual shaft, being located in the middle. The lower ring body 88, the main cylinder body 82, the upper ring body 86 and the radially twisted rotor yoke 85 have an identical outer diameter in the entire peripheral structure, they overlap one after the other from bottom to top and are tightly connected to one another, and the outer diameter is smaller than the inner diameter of the case body 12 is. A central cylinder body 87 is fixedly connected to the central upper surface of the master cylinder 82, a long cylinder top 81 being fixedly connected to the center of the upper surface of the central cylinder body 87, and the upper end of the elongated cylinder top 81 being coaxially upward through the stationary section of the five-degree of freedom- Magnetic bearing and goes with a gap through the central through hole of the axial stator 51, the radially twisted stator 61 and the radial permanent magnet 63. The outer diameter of the long upper cylinder part 81 is much smaller than the outer diameter of the central cylinder body 87. The radially twisted rotor yoke 85 is formed in the form of an annular body, the lower end of its inner side wall being connected to the lower radially twisted rotor pole 84 along the radial inward direction, and the lower The end surface of the lower radially twisted rotor pole 84 is flush with the lower end surface of the radially twisted rotor yoke 85 and is connected to the upper surface of the upper ring body 86.
    The upper end of the inner side wall of the radially twisted rotor yoke 85 is connected along the radially inward direction to the upper radially twisted rotor pole 83, with the upper end surface of the upper radially twisted rotor pole 83 being flush with the upper end surface of the radially twisted rotor yoke 85. The outer diameter of the radially / twisted rotor pole 83 and the outer diameter of the lower radially twisted rotor pole 84 are identical to the inner diameter of the upper radially twisted rotor yoke 85. The upper radially twisted rotor pole 83 does not come into contact with the lower radially twisted rotor pole 84, a distance being provided between the two. The lower radially twisted rotor pole 84 is formed in the shape of a cyclic body with the inner surface being in the shape of an outwardly concave spherical surface and the outer surface being a cylindrical surface. The inner diameter of the upper radially twisted rotor pole 83 and the lower radially twisted rotor pole 84 are much larger than the inner diameter of the upper ring body 86.
    The lower ring body 88 and the central cylinder body 87 is a solid disk, the inner diameter of the upper ring body 86 being greater than the inner diameter of the lower ring body 88, while the inner diameter of the lower ring body 88 is greater than the outer diameter of the central cylinder body 87. Between the upper ring body 86 and the central cylinder body 87, there is formed a circle of ring-shaped groove in which the rotating portion of the five-degree-of-freedom magnetic bearing is installed so that the rotating portion is coaxially embedded in the ring-shaped groove.
    Figure 5 shows a three-dimensional structural view of an axial stator 51 of the five degrees of freedom magnetic bearing. The axial stator 51 is formed by an upper fixed disk 511, a connecting cylinder ring 512, an axial stator yoke 513, an axial inner-ring stator pole 514, an axial outer-ring stator pole 515, and an axial peripheral receiving pole 516 which are arranged coaxially with each other. The uppermost part is the upper fixed washer 511, the lower surface of the upper fixed washer 511 connected to the upper surface of the connecting cylinder ring 512, while the lower surface of the connecting cylinder ring 512 is connected to the upper surface of the axial stator yoke 513. The lower surface of the axial stator yoke 513 is connected to the axial inner ring stator pole 514, the axial outer ring stator pole 515 and the axial circumferential receiving pole 516, with the axial inner ring stator pole 514 on the radially inner side, the axial outer ring stator pole 515 in the middle the radial outer side of the axial circumferential receiving pole 516, and wherein the axial inner ring stator pole 514 is flush with the lower surface, in the center of which the axial outer ring stator pole 515 is located, but the lower surface of the axial circumferential receiving pole 516 is about 1mm higher than the axial inner ring. Stator pole 514 and the lower surface, at the center of which is the axial outer ring stator pole 515. The connecting cylinder ring 512, the axial stator yoke 513, the axial inner ring stator pole 514, the axial outer ring stator pole 515, and the axial peripheral receiving pole 516 are each formed in the shape of an annular body. The upper fixed washer 511, the connecting cylinder ring 512, the axial stator yoke 513, and the axial inner ring stator pole 514 each have an identical inner diameter, therefore a central through hole is formed in the center up and down. The outer diameter of the upper fixed disk 511 is larger than the outer diameter of the axial stator yoke 513, and the outer diameter of the axial stator yoke 513 is much larger than the outer diameter of the connecting cylinder ring 512. The outer diameter of the connecting cylinder ring 512 is identical to the outer diameter of the axial inner ring stator pole 514. The inner diameter of the axial outer ring stator pole 515 is larger than the outer diameter of the axial inner ring stator pole 514, while the outer diameter of the axial outer ring stator pole 515 is smaller than the inner diameter of the axial peripheral receiving pole 516 is. The outer diameter of the circumferential receiving pole 516 is identical to the outer diameter of the axial stator yoke 513.
    Due to this, an axial stator groove is formed between the axial inner ring stator pole 514 and the axial outer ring stator pole 515 and between the axial outer ring stator pole 515 and the axial peripheral receiving pole 516, in which an axial control coil 71 is arranged, the axial control coil 71 on the axial outer ring -Stator pole 515 is wound.
    Figure 6 shows a sectional view of the three-dimensional structure of an axial rotor 54 of the five degrees of freedom magnetic bearing, the axial rotor 54 of the five degrees of freedom magnetic bearing formed in the structure of an annular body and consists of the axial inner ring rotor pole 541, the axial outer ring rotor pole 543 and the axial rotor yoke 542 which are arranged coaxially to one another. The axial inner ring rotor pole 541, the axial outer ring rotor pole 543 and the axial rotor yoke 542 are each formed in the form of an annular body, the upper surface of the axial rotor yoke 542 being connected to the lower surface of the axial inner ring rotor pole 541 and the axial outer ring rotor pole 543, respectively, and wherein the upper surfaces of the inner ring axial rotor pole 541 and the outer ring axial rotor pole 543 are flush. The inner diameter of the axial rotor yoke 542 is identical to the inner diameter of the axial inner ring rotor pole 541, the outer diameter of the axial rotor yoke 542 being identical to the outer diameter of the axial outer ring rotor pole 543. The inner diameter of the axial outer ring rotor pole 543 is larger than the outer diameter of the axial inner ring rotor pole 541, whereby an annular groove is formed between the axial inner ring rotor pole 541 and the axial outer ring rotor pole 543.
    When assembling the axial stator 51 of the five degrees of freedom magnetic bearing according to Figure 5 and the axial rotor 54 according to Figure 6, the axial rotor 54 is located below the axial stator 51, the lower outer surface of the axial stator 51 above and below flush with the outer surface of the axial Rotor 54 completes. An axial outer ring rotor pole of the rotor 543 is located exactly below the axial circumferential receiving pole of the stator 516, an axial inner ring rotor pole of the rotor 541 being located exactly below the axial outer ring stator pole of the stator 515.
    Figure 7 shows a three-dimensional sectional view of a radially rotated stator 61 of the five degrees of freedom magnetic bearing. The radially twisted stator 61 is formed by a radially twisted stator yoke 612, a radial stator pole 611, a twisted stator pole 613, and a radially twisted receiving pole 614. The radially twisted stator yoke 612 is designed in the form of an annular body, with 3 radial stator poles 611 and 3 twisted sub-poles 613 extending outward from the upper end surface of the radially twisted stator yoke 612 along the radial direction, and the 3-radial stator poles 611 and the 3-twisted sub-poles distributed uniformly offset from one another along the circumferential direction and each have a magnetic pole with a pole piece at the outer end. The top surface of radial stator pole 611 and twisted stator pole 613 are flush with the top surface of radially twisted stator yoke 612. From the lower end surface of the radially twisted stator yoke 612, a radially twisted receiving pole 614 extends outwardly along the radial direction, the radially twisted receiving pole 614 being formed in the shape of a cyclic body, and having its inner surface a cylindrical surface and its outer side surface being convex outward along the radial direction is spherical surface and its lower end surface is flush with the lower end surface of the radially twisted stator yoke 612. The inside diameter of the radially twisted receiving pole 614 is identical to the outside diameter of the radially twisted stator yoke 612.
    As shown in Figures 1, 2, 3, 4, 5, 6 and 8, the flywheel rotor 8 is located exactly in the middle of the axis inside the closed vacuum chamber of the housing. The axial stator 51 of the five degrees of freedom magnetic bearing and the flywheel rotor 8 are coaxially distributed, with the upper surface of the upper fixed disk 511 of the axial stator 51 engaging with the lower surface of the upper disk 111, the upper end cap 11 of which is provided with a central cylindrical hole. Exactly below the lower surface of the axial stator 51 is an annular groove formed by the central cylinder body 87 and the upper annular body 86 of the flywheel rotor 8 as shown in Figure 4, the lower surface of the axial stator 51 and the upper surface of the annular groove being flush with one another and having an identical outer diameter, and the inner and outer diameters of the lower surface of the axial stator 51 being identical to the inner and outer diameters of the annular groove, respectively.
    In the annular groove formed by the central cylinder body 87 and the upper ring body 86 of the flywheel rotor 8, the axial rotor 54, the axial inner ring permanent magnet 52 and the axial outer ring permanent magnet 53 are placed. The axial inner ring permanent magnet 52 and the axial outer ring permanent magnet 53 are each formed in the form of an annular body. The axial outer ring permanent magnet 53 is fixed to the lower surface of the axial rotor 54, the inner diameter of the axial outer ring permanent magnet 53 being identical to the inner diameter of the axial rotor 54. The axial inner ring permanent magnet 52 is located on the inside of the axial rotor 54 and the axial outer ring permanent magnet 53. The inner diameter of the axial inner ring permanent magnet 52 is identical to the outer diameter of the central cylinder body 87 of the flywheel rotor 8, with the axial inner ring permanent magnet fixed to an outer wall of the central cylinder body 87 of the flywheel rotor 8 according to FIG. 4 is placed and rotates coaxially with the flywheel rotor 8. The upper and lower surfaces of the axial inner ring permanent magnet 52 are each flush with the corresponding upper and lower surfaces of the central cylinder body 87.
    Exactly above the axial inner ring permanent magnet 52 is the axial inner ring stator pole 514 of the axial stator 51, namely the inner and outer diameter of the axial inner ring permanent magnet 52 each correspond to the inner and outer diameter of the axial inner ring stator pole 514. and outer diameter of the axial outer ring permanent magnet 53 corresponds in each case to the inner and outer diameter of the axial inner ring stator pole 541 of the axial rotor 54 and the axial outer ring stator pole 515 of the axial stator 51, with an axial stator just below the axial outer ring stator pole 515 of the axial stator 51 Inner ring stator pole 514 of axial rotor 54, and just below axial inner ring stator pole 514, an axial outer ring permanent magnet 53, and the three correspond from top to bottom. An axial inner ring rotor pole 541 is located exactly below the axial inner ring stator pole 514, an axial outer ring rotor pole 543 being located exactly below the axial circumferential receiving pole.
    Between the inner wall of the axial outer ring permanent magnet 53, the inner wall of the axial rotor 54 and the outer wall of the axial inner ring permanent magnet 52, a first axial aluminum magnet insulating ring 55 is firmly embedded by the press fit. A third axial aluminum magnet insulating ring 57 is firmly glued between the outer wall of the axial outer ring permanent magnet 53 and the axial rotor 54.
    The inner and outer diameters of the inner ring rotor pole 541 of the axial rotor 54 correspond to the inner and outer diameters of the axial outer ring stator pole 515 of the axial stator pole 51, while the inner and outer diameters of the outer ring rotor pole 543 of the axial rotor 54 each correspond to the inner and outer diameter Outer diameter of the axial peripheral receiving pole 516 of the axial stator pole 51 corresponds.
    In an annular groove between the axial inner ring rotor pole 541 and the axial outer ring rotor pole 543, a second axial aluminum magnetic insulating ring 56 is firmly embedded by the interference fit.
    The outer diameter of the axial outer ring rotor pole 543 of the axial rotor 54 is identical to the outer diameter of the third axial aluminum magnetic insulating ring 57 and is in each case identical to the inner diameter of the upper ring body 86 of the flywheel rotor 8 and is fixedly connected to the upper ring body 86. The upper end surfaces of the axial inner ring permanent magnet 52, the first axial aluminum magnetic insulating ring 55, the axial rotor 54, the second axial aluminum magnetic insulating ring 56, the upper ring body 86 of the flywheel rotor 8 and the central cylinder body 87 are each flush with one another.
    The axial inner ring permanent magnet 52, the axial outer ring permanent magnet 53, the axial rotor 54, the first axial aluminum magnetic insulating ring 55, the second axial aluminum magnetic insulating ring 56, the third axial aluminum magnetic insulating ring 57 and the flywheel rotor 8 are distributed coaxially and each represent an annular body .
    The height of the axial inner ring permanent magnet 52 is greater than that of the axial outer ring permanent magnet 53, the permanent magnets each made of a high-performance rare earth material - neodymium-iron-boron - are made. The axial inner ring permanent magnet 52 performs magnetization along the axial upward direction, while the axial outer ring permanent magnet 53 performs magnetization along the axial downward direction, the two having opposite directions of magnetization. The upper surface of the inner ring axial permanent magnet 52 is spaced 0.5 mm from the lower surface of the axial stator 51, namely, 0.5 mm from the lower surface of the inner ring axial stator pole 514 to form an axial air gap. The lower surfaces of the inner ring rotor pole 541 of the axial rotor 54 and the axial outer ring stator pole 515 are spaced apart by 0.5 mm to form an axial air gap. The lower surface of the axial circumferential receiving pole 516 and the upper surface of the outer ring rotor pole 543 are spaced 1.5mm apart to form an axial circumferential receiving air gap, the axial circumferential receiving air gap being larger than the axial air gap.
    Figure 10 shows a sectional view of the assembly structure of a radial magnetic bearing of the five degrees of freedom magnetic bearing and a flywheel rotor 51. As shown in Figures 1, 2, 3, 4, 6 and 8, is on the outer wall of the axial stator yoke 513 of the axial stator 51 and the axial circumferential receiving pole 516a annular radial aluminum magnetic insulating ring 64 tightly fitted, with a radial inner stator ring 62 tightly fitted on the outer wall of the radial aluminum magnetic insulating ring 64, and wherein the radial aluminum magnetic insulating ring 64 and the axial stator 51 are press-fitted together, and the upper and lower end surfaces of the radial aluminum magnetic insulating ring 64 are respectively flush with the upper end surface of the axial stator yoke 513 of the axial stator 51 and the lower surface of the axial outer ring stator pole 515 of the axial stator 51. The top and bottom surfaces of the radial inner stator ring 62 are flush with the top and bottom surfaces of the radial aluminum magnetic isolation ring 64, respectively. An annular radial permanent magnet 63 is tightly placed on the outer wall of the radial inner stator ring 62, with a radially twisted stator 61 being placed on the outer wall of the radial permanent magnet 63. The inner and outer diameters of the ring-shaped radial permanent magnet 63 correspond to the outer diameter of the radial inner stator ring 62 and the inner diameter of the radially twisted stator yoke 612 of the radially twisted stator 61, respectively 61 is press-fitted to the exterior of the annular radial permanent magnet 63. The top and bottom surfaces of the radially twisted stator yoke 612 are flush with the top and bottom surfaces of the radial permanent magnet 63, respectively. The radial permanent magnet 63 is made of a high-performance rare earth material - neodymium-iron-boron - and magnetizes along the inner-outward radial direction.
    A radial control coil 72 is wound on the radial stator pole 611, with a twisted control coil 73 being wound on the twisted stator pole 613.
    As shown in Figures 7 and 4, the radial stator pole 611 of the radially twisted stator 61 and the upper radial twisted rotor pole 83 of the flywheel rotor 8 are exactly to each other in the radial direction, the radially twisted receiving pole 614 and the lower radially twisted rotor pole 84 are exactly to each other in the radial direction. The outer surface of the radial stator pole 611 and the inner surface of the upper radially twisted rotor pole 83 are spaced 0.5mm apart with a radial air gap between the two. The outer surface of the radially twisted receiving pole 614 and the inner surface of the lower radially twisted rotor pole 84 are spaced 0.5mm apart with a radial air gap between the two.
    FIG. 11 shows a sectional view of the assembly structure of a radial sensor holder 21 and an axial sensor holder 22. The auxiliary bearing 4 is fitted in the center hole of the drilled upper end cap 11. The upper and lower end surfaces of the auxiliary bearing 4 are flush with the upper and lower end surfaces of the center hole groove of the upper end cap 11. The elongated upper cylinder part 81 of the flywheel rotor 8 is led out of the inner hole of the auxiliary bearing 4 and its diameter is 0.5 mm smaller than the diameter of the inner hole of the auxiliary bearing, the two fitting together with a gap. A radial sensor holder 21 and an axial sensor holder 22 are arranged above the auxiliary bearing 4.
    FIG. 12 shows a three-dimensional sectional view of a radial sensor holder 21, the radial sensor holder 21 being formed in that the upper ring body 211 of the radial sensor located at the top and the lower ring body 212 of the radial sensor located below are connected to one another. On the upper end surface of the lower ring body 212 of the radial sensor, axial bolt holes are uniformly provided along the circumferential direction, with the lower surface of the lower ring body of the radial sensor 212 being flush with the upper surface of the central circular groove of the upper end cap 11, as shown in FIG lower surface of the center hole of the upper end cap 11 tightly to the attachment piece of the ring body 23an. On the end face of the fixing piece 23, four axial bolt holes are uniformly provided along the circumferential direction. The four bolt holes on the lower ring body 212 of the radial sensor 212 fit into the four bolt holes on the central circular groove of the upper end cap 11 and the four bolt holes of the fastening piece 23, through the bolts the radial sensor holder 21 is fastened to the fastening piece 23, so that the auxiliary bearing 4 is fastened to the radial sensor holder 21 is attached. On the cylinder wall of the upper ring body 211 of the radial sensor, four radial through holes are uniformly provided along the circumferential direction for installing a radial sensor probe 32, with the radial sensor probe 32 facing the side wall of the long cylinder top 81.
    Figure 13 shows a three-dimensional sectional view of an axial sensor holder 22, which is designed such that an upper disk of the axial sensor 211 and a lower ring body of the axial sensor 22 are connected to one another. The center of the disk of the axial sensor 221 is bored along the axial direction to install the axial sensor probe 31 directed toward the center of the upper end surface of the long cylinder top 81. The lower surface of the disk of the axial sensor 221 comes into close contact with the upper surface of the upper ring body of the radial sensor 211. On a side wall of the ring body of the axial sensor 22, a bolt hole is provided along the radial direction, a bolt with the ring body 211 of the radial sensor bracket 21 fits to attach the axial sensor mount 22.
    As shown in Figures 1, 2, 14 and 15, an induction sensor is installed exactly below the flywheel rotor 8, with a cylindrical recess being formed between the main cylinder body 82 of the flywheel rotor 8 and the lower ring body 88. The induction sensor comprises a fixed motor stator 9, a fixed motor coil 93 and a rotatable motor circuit board 92, the motor circuit board 92 being coaxially placed on the exterior of the motor stator 91 in order to embed the motor stator 91, the conductor plate 92 and the motor coil 93 in the cylindrical recess. The annular conduit plate 92 is a rotatable rotor portion and its outer wall rests closely against the inner wall of the lower annulus 88, with the upper end surface of the conduit plate 92 engaging with the lower end surface of the master cylinder body 82 of the flywheel rotor 8, and with the lower end surface of the conduction plate 92 flush with the lower end surface of the lower ring body 88 of the flywheel rotor 8.
    As shown in FIG. 16, the motor stator 91 is formed by an upper disk 911, a solid cylinder 915 and a lower disk 913. On the upper disk 911, 6 fan-shaped stators of the same shape are cut evenly along the circumferential direction, with 6 cylindrical stator poles 912 being cut evenly along the circumferential direction on the outer edge of each fan-shaped stator, and the 6 cylindrical motor stator poles 912 being spaced 5 degrees apart. The upper and lower end surfaces of the solid cylinder 915 are closely connected to the lower end surface of the upper disc 911 and the upper end surface of the lower disc 913, respectively, with the solid cylinder 915, the upper disc 911 and the lower disc 913 being configured coaxially. At the edge of the lower disk 913, motor bolt holes 914 are evenly distributed along the circumferential direction 8 in order to realize a fitting into the bolt hole of the lower end cap 13, the lower end surface of the lower disk 913 and the upper end surface of the lower end cap being tightly connected to one another by mounting the bolt. An air gap of 0.5mm is provided between the arcuate outer wall of the motor stator pole 912 and the inner wall of the lead plate 92, with a gap being provided between the upper end surface of the motor stator pole 912 and the lower end surface of the master cylinder body 8 of the flywheel rotor 8 to install the coil, and the lower The end face of the motor stator pole 912 is flush with the lower end face of the lead plate 92. The motor coil 93 is wound on each motor stator pole 912. The flywheel rotor 8, the motor stator 91, the lead plate 92, and the lower end cap 13 are each coaxially mounted. A gap is provided between the motor stator 91 and the lower groove wall of the flywheel rotor to install the coil, the motor coil 93 and the flywheel rotor 8 not coming into contact with each other.
    By the three-phase alternating current, the motor coil 93 generates a rotating magnetic field in the air gap, whereby an induction current is detected in the line plate 92 under the action of the rotating magnetic field, and the line plate 92 rotates, and the induction current and the rotating magnetic field act mutually to generate an electromagnetic thrust Fl so that the flywheel rotor 8 moves along the tangential direction of the arcuate air gap, since the flywheel rotor 8 is fixedly connected to the line plate 92, the flywheel rotor 8 is driven to rotate together. When the flywheel rotor 8 has a slight disturbance and deviates from the center, the coil current is changed to generate a normal force on a corresponding arcuate surface of the lead plate, so that the flywheel rotor 8 returns to the center of the circle.
    In operation of the present invention, a static passive suspension, a radial two degree of freedom balance, a radial torsional two degree of freedom balance, and an axial single degree of freedom balance of the flywheel rotor 8 can be realized. When the flywheel rotor 8 is at high speed for the axial control, the axial control coil 71 is turned on with direct current so that they form an electromagnet with the axial stator 51, by varying and controlling the magnitude and direction of the direct current, the magnitude and direction of the force acting on changed the flywheel rotor 8 in the axial direction to realize axial single degree of freedom control. Regarding the radial control, three sets of the radial control coils 72 are energized with three-phase alternating current, by varying the magnitude of the current of the control coil 72, precise degree of leisure control in the radial direction is realized. As for the twisted control, three sets of the twisted control coils 73 are turned on with direct current, and twisted control is realized by varying the size and direction of the direct current. Details are as follows:
    The implementation of the static passive suspension: see Figure 17, the bias magnetic flux generated by the radial permanent magnet 63 is shown as a dotted line and arrow according to FIG Stator yoke 613, goes through the radial stator pole 611, the radial air gap, the upper radially twisted rotor pole 83 and the radially twisted receiving pole 614, the radial air gap and the lower radially twisted rotor pole 84 and flows together in the radially twisted rotor yoke 85 of the flywheel rotor 8, goes through the upper ring body 86, the axial air gap and the radial stator ring 62 and returns to the S pole of the radial permanent magnet 63 at the end. The axial inner ring permanent magnet 52 magnetizes along the axial upward direction, while the axial outer ring permanent magnet 53 performs magnetization along the axial downward direction, the bias magnetic flux generated by the axial inner ring permanent magnet 52 and the axial outer ring permanent magnet 53 are as dotted Line and arrow shown in FIG. The bias magnetic flux generated by the axial inner ring permanent magnet 52 goes from the N pole of the axial inner ring permanent magnet 52 successively through the axial air gap, the axial inner ring stator pole 514, the axial stator yoke 513, the axial outer ring stator pole 515, the axial air gap and the axial inner ring rotor pole 541 of the axial rotor 54 (since the lower surface of the axial peripheral receiving pole 516 is 1.5mm from the upper surface of the outer ring rotor pole 543 and the distance is larger than the axial air gap distance of 0.5mm, the bias magnetic flux goes only through the axial air gap and the axial inner ring rotor pole 541) and at the end reaches the S pole of the axial outer ring permanent magnet 53. When the flywheel rotor 8 is in the middle equilibrium position, the central shaft of the flywheel rotor 8 overlaps with the axial central shaft of the magnetic bearing and the axial center shaft of the motor stator. In the radial direction, the air gap magnetic fluxes of the upper radially twisted rotor pole 83, the lower radially twisted rotor pole 84 of the spherical surface and the radial stator pole 611, the radially twisted receiving pole 614 of the spherical surface of the flywheel rotor 8 are completely identical to each other, therefore an electromagnetic force in the flywheel rotor 7 acts in a balanced manner radial direction in order to realize a radially stable suspension of the flywheel rotor 7. In the axial direction, the axial air gap magnetic fluxes between the axial inner ring stator pole 514, the axial outer ring stator pole 515 and the axial inner ring permanent magnet 52 and the axial inner ring rotor pole 541 of the axial rotor 54 are completely identical to each other, therefore an electromagnetic force acts in a balanced manner on the flywheel rotor 8 in the axial direction, whereby an axially stable suspension of the flywheel rotor 8 is realized.
    The realization of the radial equilibrium of two degrees of freedom: see Figure 18, a coordinate system is established in a radial plane in three directions A, B and C, if the flywheel rotor 8 receives a disturbance in the radial degree of freedom and deviates in direction A, the three radial control coils 72 are switched on at the same time, and the control magnetic circuits generated in directions A, B and C are shown as bold solid lines and arrows according to FIG. The radial control coils in the present invention are driven by a three phase inverter, with the dotted lines and arrow representing the direction of bias magnetic flux, and the bold solid lines and arrow representing the direction of radial control magnetic flux. When the dotted lines and the bold solid lines have the same directions, it indicates that the magnetic fluxes are superimposed, when the directions are opposite, it indicates that the magnetic fluxes are balanced. Therefore, the composite magnetic fluxes are overlapped in the negative direction, namely, a composite magnetic tensile force is generated in the negative direction, so that the flywheel rotor 8 returns to the radial weight position. The working principle of generation in directions B and C is similar to the above.
    The realization of the equilibrium of the twisted degree of freedom: see Figure 18, if the flywheel rotor is disturbed and a downward twisted deviation occurs in direction A, the axial air gap will increase in direction A, while the axial air gap in the negative direction A reduced. The twisted coil 73 is switched on, so that the magnetic fluxes overlap and increase in direction A and the magnetic flux balance in negative direction A is reduced, as a result of which an upward magnetic pulling force acts on the flywheel rotor in direction A and one in negative direction A. downward magnetic pulling force acts on the flywheel rotor, whereby the axial air gap in direction A decreases and the axial air gap in the negative direction of A increases, at the end the flywheel rotor 8 returns to the equilibrium position.
    The realization of the equilibrium of the axial individual degrees of freedom: see Figure 19, when the flywheel rotor 8 is disturbed in the axial individual degrees of freedom and deviates downward, the axial air gap increases, the axial control coil 71 is switched on with direct current, the magnetic circuit generated by the axial control coil 71 is shown like bold solid lines and arrows according to FIG. 19. Here, the dotted line and the arrow stand for the direction of the bias magnetic flux, while the bold solid line and the arrow stand for the direction of the axial control magnetic flux, when the dotted lines and the bold solid lines have the same directions, it indicates that the magnetic fluxes are superimposed when the directions are opposite, it indicates that the magnetic fluxes are being balanced. From this it can be found that the total magnetic flux increases in the axial direction, as a result of which an upwardly synthesized magnetic tensile force is generated on the flywheel rotor 8, so that the axial air gap is reduced, at the end the flywheel rotor 8 draws back to the axial equilibrium position.
    With the above content, the present invention can be realized. Changes and modifications made by those skilled in the art without departing from the scope of the claims of the present invention are intended to be embraced within the scope of the present invention.
    权利要求:
    Claims (10)
    [1]
    1. Magnetic suspension flywheel energy storage device with virtual shaft for electric vehicles, wherein an outermost part of the device is a housing, and in the housing cavity, a five-degree magnetic bearing, a flywheel rotor (8) and an induction motor are coaxially arranged, and wherein the five-degree of freedom is Magnetic bearing comprises a stationary section and a rotating section, and wherein the induction motor has a motor stator (91) and a rotatable circuit board (92) which is placed coaxially on the outer circumference of the motor stator (91), characterized in that, from bottom to top , the flywheel rotor (8) has a lower ring body (88), a master cylinder (82), an upper ring body (86) and a radially twisted rotor yoke (85), which are connected to one another and have an identical outer diameter, and with the central on the upper surface of the master cylinder (82) a central cylinder body (87) coaxially is closed, and wherein at the center of the upper surface of the central cylinder body (87) an elongated cylinder top (81) is coaxially connected, and the upper end of the elongated cylinder top (81) goes upward coaxially through a stationary portion of the five degrees of freedom magnetic bearing ; and wherein the lower ring body (88) and the central cylinder body (87) are each a solid disk, and wherein the inner diameter of the upper ring body (86) is greater than the inner diameter of the lower ring body (88), and wherein the inner diameter of the lower ring body (88) is larger than the outer diameter of the central cylinder body (87), and wherein an annular groove is formed between the upper ring body (86) and the middle cylinder body (87), and in the annular groove a rotating portion of the five degree of freedom magnetic bearing is embedded coaxially, and wherein between the main cylinder (82) and the lower ring body (88) a cylindrical recess is formed in which the circuit board (92) is embedded coaxially.
    [2]
    2. Magnetic suspension flywheel energy storage device according to claim 1, characterized in that the stationary portion of the five degrees of freedom magnetic bearing comprises an axial stator (51), a radially twisted stator (61) and a radial permanent magnet (63), the uppermost part of the axial Stator (51) forms an upper fixed disk (511), and wherein an underside of the upper fixed disk (511) is connected by a connecting cylinder ring (512) to an axial stator yoke (513), and wherein the one radially inner side of the lower surface of the axial stator yoke (513) with an axial inner ring stator pole (514), the center of the lower surface with an axial outer ring stator pole (515) and an outer side of the lower surface with an axial peripheral receiving pole (516), and wherein an axial control coil (71) is wound on the axial outer ring stator pole (515); and an annular radial aluminum magnet insulating ring (64), a radial inner stator ring (62), a radial permanent magnet (63) and the radially twisted stator (61) are placed one after the other on an outer side of the axial stator yoke (513) and the axial circumferential receiving pole (516) , and wherein the radial permanent magnet (63) has a magnetization in the radial direction from the inside to the outside; and wherein the radially twisted stator (61) is formed by a radially twisted stator yoke (612), at least one radial stator pole (611), at least one twisted stator pole (613) and a radially twisted receiving pole (614), and wherein the radially twisted stator yoke (612) in Shape of an annular body is formed from its upper end face along the radial direction 3radial stator poles (611) and 3 twisted stator poles (613) extend outward, and wherein the 3 radial stator poles (611) and the 3 twisted stator poles (613) offset along the circumferential direction with a distance are evenly distributed to each other, and wherein from the lower end surface of the radially twisted stator yoke (612) along the radial direction of the radially twisted receiving pole (614) extends outward, and wherein an outer side surface of the radially twisted receiving pole (614) as one along the radial direction outwardly protruding spherical surface is formed, and wherein on the A radial control coil (72) is wound on the radial stator poles (611), while a twisted control coil (73) is wound on the twisted stator poles (613).
    [3]
    3. Magnetic suspension flywheel energy storage device according to claim 2, characterized in that the upper end of the inner side wall of the radially twisted rotor yoke (85) along the radially inward direction is connected to an upper radially twisted rotor pole (83), the lower end along the inner side wall connected in the radial inward direction to a lower radially twisted rotor pole (84), and wherein the inner surface of the lower radially twisted rotor pole (84) is in the form of an outwardly concave spherical surface. and wherein the radial stator pole (611) and the upper radial rotated rotor pole (83) lie exactly to one another in the radial direction and a radial air gap is provided between the two, and wherein the radially rotated receiving pole (614) and the lower radially rotated rotor pole (84) are exactly to one another lie in the radial direction and an air gap is provided between the two.
    [4]
    4. Magnetic suspension flywheel energy storage device according to claim 2, characterized in that the rotating portion of the five degrees of freedom magnetic bearing has an axial rotor (54) of the ring body arranged in the annular groove formed between the upper ring body (86) and the central cylinder body (87) comprises, wherein the axial rotor (54) is formed by an axial inner ring rotor pole (541), an axial outer ring rotor pole (543) and an axial rotor yoke (542) which are arranged coaxially to each other, and wherein the upper surface of the axial rotor yoke (542) is respectively connected to the lower surfaces of the axial inner ring rotor pole (541) and the axial outer ring rotor pole (543), and wherein between the axial inner ring rotor pole (541) and the axial outer ring rotor pole (543) a second axial aluminum magnetic isolation ring (56) is embedded; and wherein exactly below the axial inner ring stator pole (514) is an axial inner ring permanent magnet (52) placed on an outer wall of the central cylinder body (87), and exactly below the axial inner ring stator pole (514) the axial inner ring Rotor pole (541) is located, and wherein the axial outer ring rotor pole (543) is located exactly below the axial circumferential receiving pole (516), and wherein an axial outer ring permanent magnet (53) is connected to the lower surface of the axial rotor yoke (542), and wherein between an inner wall of the axial outer ring permanent magnet (53), an inner wall of the axial rotor (54) and an outer wall of the axial inner ring permanent magnet (52), a first axial aluminum magnet insulating ring (55) is embedded, and between an outer wall of the axial Outer ring permanent magnet (53) and the axial rotor (54) a third axial aluminum magnet insulating ring (57) is connected, and wherein the axial inner ring permanent magnet (52) performs magnetization along the axial upward direction, while the axial outer ring permanent magnet (53) performs magnetization along the axial downward direction.
    [5]
    5. Magnetic suspension flywheel energy storage device according to claim 4, characterized in that an axial air gap is provided between the axial inner ring permanent magnet (52) and the axial inner ring stator pole (514), wherein between the axial inner ring rotor pole (541) and the axial outer ring stator pole (515) an axial air gap is provided, and wherein an axial circumferential receiving air gap is formed between the lower surface of the axial circumferential receiving pole (516) and the outer ring rotor pole (543), and wherein the axial circumferential receiving air gap is larger than the axial air gap is.
    [6]
    6. Magnetic suspension flywheel energy storage device according to claim 2, characterized in that the housing is designed such that a housing body (12) in the form of a hollow cylinder, an upper end cap (11) and a lower end cap (13) are connected to one another, wherein the upper fixed disk (511) of the axial stator (51) is connected to the upper end cap (11), while the lower end of the motor stator (91) is connected to the lower end cap (13); and wherein in the middle of the upper end cap (11) a cylindrical hole in which an auxiliary bearing (4) is fitted is arranged, wherein the elongated upper cylinder part (81) is led out of the inner hole of the auxiliary bearing 4 with a gap, and above the Auxiliary bearing (4) a radial sensor holder (21) and an axial sensor holder (22) are arranged.
    [7]
    7. Magnetic suspension flywheel energy storage device according to claim 6, characterized in that on an outer side wall of the housing body (12) along the circumferential direction end cap connection holders (122) are evenly distributed with the same size, between each two end cap connection holders (122) first cooling fins (121) are evenly arranged with the same shape, and wherein on the outer side wall of the housing body (12) between each two first cooling fins (121) four rectangular heat dissipation slots are evenly cut, which are distributed in two rows and two columns and one identical Have shape; and wherein the upper end cap (11) is formed such that an upper disc (111) provided with a central cylindrical hole, a middle ring (112) and a lower ring (113) are connected in series; and wherein second cooling fins (115) are evenly distributed on the upper end surface of the lower disk (113) along the circumferential direction; and wherein third cooling fins (114) are evenly distributed on the upper surface of the upper disk (111) along the circumferential direction; and no cylindrical hole is provided in the center of the lower end cap (13).
    [8]
    8. Magnetic suspension flywheel energy storage device according to claim 2, characterized in that the axial inner ring stator pole (514) is flush with the lower surface of the axial stator (51), in the center of which the axial outer ring stator pole (515) is located wherein the lower surface of the axial peripheral receiving pole (516) is higher than the lower surfaces of the axial inner ring stator pole (514), and the axial outer ring stator pole (515), and wherein the upper fixed disc (511), the connecting cylinder ring ( 512), the axial stator yoke (513) and the axial inner ring stator pole (514) each have an identical inner diameter, and wherein the outer diameter of the upper fixed disk (511) is greater than the outer diameter of the axial stator yoke (513), and wherein the The outer diameter of the axial stator yoke (513) is greater than the outer diameter of the connecting cylinder ring (512), and wherein the outer diameter of the connecting cylinder ring (512) is equal to the outer diameter of the axial inner ring stator pole (514), and wherein the outer diameter of the circumferential receiving pole (516) is equal to the outer diameter of the axial stator yoke (513).
    [9]
    9. Magnetic suspension flywheel energy storage device according to claim 4, characterized in that the upper surfaces of the axial inner ring rotor pole (541) and the axial outer ring rotor pole (543) are flush with one another, the inner diameter of the axial rotor yoke (542) being equal to that Is the inner diameter of the axial inner ring rotor pole (541), wherein the outer diameter of the axial rotor yoke (542) is equal to the outer diameter of the axial outer ring rotor pole (543).
    [10]
    10. Magnetic suspension flywheel energy storage device according to claim 2, characterized in that the axial control coil (71) is connected to direct current, wherein the radial control coil (72) is connected to three-phase alternating current, and wherein the twisted control coil (73) is connected to direct current .
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    同族专利:
    公开号 | 公开日
    CN109831056A|2019-05-31|
    CN109831056B|2020-12-18|
    WO2020151060A1|2020-07-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2012098571A1|2011-01-17|2012-07-26|Kishishita Ryuutarou|Power generation mechanism comprising flywheel supported by magnetic-levitation bearing, and method of controlling power generation mechanism|
    CN102647123A|2011-02-18|2012-08-22|张玉宝|Magnetic-suspension fly wheel and complete-permanent-magnet repellent type magnetic suspension bearing and position detection and air gap control|
    CN102412664A|2011-11-21|2012-04-11|李明山|Conductor plate-type electrical generator|
    CN102537048A|2012-02-08|2012-07-04|南京信息工程大学|Axial magnetic bearing capable of controlling radial twisting|
    CN104410204B|2014-11-28|2017-01-18|江苏大学|Flywheel energy storage device|
    CN107134881B|2017-04-26|2019-04-30|江苏大学|A kind of five degree of freedom composite excitation magnetic suspension switched reluctance motor|
    CN107289004B|2017-07-27|2019-04-02|江苏大学|A kind of vehicle-mounted flying wheel battery alternating current-direct current five degree of freedom conisphere face hybrid magnetic bearing|
    CN107448474B|2017-07-27|2019-02-05|江苏大学|A kind of vehicle-mounted flying wheel battery five degree of freedom hybrid magnetic bearing|CN113422467A|2021-05-13|2021-09-21|江苏大学|Ultrathin vehicle-mounted magnetic suspension flywheel battery and working method thereof|
    法律状态:
    2020-09-30| AZW| Rejection (application)|
    优先权:
    申请号 | 申请日 | 专利标题
    CN201910072060.7A|CN109831056B|2019-01-25|2019-01-25|Virtual shaft type magnetic suspension flywheel energy storage device for electric automobile|
    PCT/CN2019/077586|WO2020151060A1|2019-01-25|2019-03-11|Virtual shaft-type magnetic levitation flywheel energy storage device for electric car|
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