A dual-axial tangential flux motor

Abstract

The present invention relates to a dual-axial tangential flux motor, belonging to the technical field of flux motors, and includes a central shaft, a stator disk, a housing, axial magnetic tiles, a radial ring frame and radial magnetic tiles. The stator disk is vertically and fixedly installed on the central shaft, the housing is rotatably installed on the central shaft, the axial magnetic tiles are arranged on the side surface of the stator disk and have a gap with the stator disk, the radial ring frame is installed on the edge of the stator disk and is arranged as an annular structure along the edge of the stator disk, the radial magnetic tiles are arranged outside the radial ring frame and are concentric with the radial ring frame, axial printed windings are arranged on the side surface of the stator disk, radial printed windings are arranged on the radial ring frame, and the axial magnetic tiles and the radial magnetic tiles are both fixedly installed on the housing, so as to solve the technical problems of large volume and weight and low efficiency of the motor in the prior art.

Description

Technical Field

[0001] The present invention relates to a double-axial tangential flux motor, belonging to the technical field of flux motors. Background Art

[0002] With the continuous development and growth of the motor industry in our country, especially domestic enterprises entering the international market and directly competing with foreign companies face to face, the world's motor processing and manufacturing has gradually shifted to China. At present, China has become a major producer and exporter of the motor industry. However, most of the motors produced are ordinary motors with low efficiency and high energy consumption, with low technical content and low added value. In the long-term development trend, ordinary motors with low efficiency and high energy consumption will gradually be replaced by environmentally friendly and energy-saving high-efficiency motors. Traditional motors use silicon steel sheets and wound stator structures, with large armature core inductance, large magnetic damping and iron loss, easy to form iron loss heat sources, large volume and weight, low efficiency. In addition, motors with traditional radial magnetic field structures have low power density, small torque volume, small output torque, high torque ripple, low linearity of torque characteristics, high noise, much heat generation, and low power. Summary of the Invention

[0003] In view of the deficiencies existing in the prior art, the present invention provides a double-axial tangential flux motor to solve the technical problems of large volume and weight and low efficiency of motors in the prior art.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: A double-axial tangential flux motor includes a central shaft, a stator disk, a housing, axial magnetic tiles, a radial ring frame and radial magnetic tiles. The stator disk is vertically and fixedly installed on the central shaft. The housing is rotatably installed on the central shaft. The axial magnetic tiles are arranged on the side of the stator disk with a gap from the stator disk. The radial ring frame is installed on the edge of the stator disk and is arranged as an annular structure along the edge of the stator disk. The radial magnetic tiles are arranged outside the radial ring frame and are concentric with the radial ring frame. Axial printed windings are arranged on the side of the stator disk, and radial printed windings are arranged on the radial ring frame. The axial magnetic tiles and the radial magnetic tiles are both fixedly installed on the housing.

[0005] The beneficial effects of the present invention are as follows: By using printed windings as the stator to replace the stator coils of traditional motors, it realizes an armature without a core, small inductance, eliminates magnetic damping and iron loss, and reduces iron loss heat sources; By adopting an axial and radial composite magnetic field, it has the characteristics of high power density, high torque density, high efficiency, stable low-speed operation, and high cost performance; By adopting the above structure, the volume and weight of the motor are reduced, and at the same time, the efficiency of the motor is improved.

[0006] On the basis of the above technical solutions, the present invention can also be improved as follows.

[0007] Furthermore, the axial magnetic tile includes a left magnetic tile and a right magnetic tile, both of which are arranged in a ring shape, and the left magnetic tile and the right magnetic tile are respectively located on the left and right sides of the stator disk, and axial printed windings are arranged on the left and right sides of the stator disk.

[0008] Furthermore, the housing includes a left cover and a right cover, and a bearing cavity protruding from the center is provided on the left side of the left cover and the right side of the right cover, a bearing is installed in the bearing cavity, the inner ring of the bearing is installed on the central axis, and the outer ring of the bearing is installed in the bearing cavity.

[0009] Furthermore, the axial printed winding and the radial printed winding are both magnetized in the direction of the Halbach magnetic sheet array.

[0010] Furthermore, a gear or a pulley is provided on the radial outer side surface of the housing.

[0011] Furthermore, external threads are provided at both ends of the central axis.

[0012] Furthermore, the central axis is configured as a stepped axis, including a bearing cavity inner hole platform rotatably mounted with the bearing cavity inner hole, a bearing mounting platform for mounting the bearing, and a stator mounting platform for mounting the stator disk, the diameter of the bearing cavity inner hole platform being smaller than the diameter of the bearing mounting platform, and the diameter of the bearing mounting platform being smaller than the diameter of the stator mounting platform.

[0013] Furthermore, a sealing ring is arranged between the bearing cavity and the central axis. By arranging the sealing ring, the bearing cavity is sealed to ensure the safety of the bearing working environment.

[0014] Furthermore, the stator mounting platform is provided with a plurality of fixing ears, and the fixing ears are detachably connected to the stator plate by screws. The fixing ears are provided to facilitate installation and removal of the stator plate.

[0015] Furthermore, a left magnetic tile limiting ring is provided on the inner side wall of the left cover, a right magnetic tile limiting ring is provided on the inner side wall of the right cover, a left cover outer side wall is provided on the outer edge of the left cover, a right cover outer side wall is provided on the outer edge of the right cover, and the left cover outer side wall and the right cover outer side wall are plugged and installed. By providing the left magnetic tile limiting ring and the right magnetic tile limiting ring, the axial magnetic tile is limited and installed, and by providing the left cover outer side wall and the right cover outer side wall for plugging and installation, it is easy to install and disassemble, saving time and effort.

[0016] By setting the left magnetic tile and the right magnetic tile, a structure with an intermediate stator and two side rotors is achieved, further improving the motor efficiency; by setting the outer shell as a left cover and a right cover, it is convenient for installation and disassembly. At the same time, the outer shell is fixedly installed with the axial magnetic tile and the radial magnetic tile to achieve synchronous rotation and output power, with high structural stability; by magnetizing in the direction of the Halbach magnet array, the magnetic field of the axial magnetic tile has a single direction, changing the yoke material, reducing the yoke thickness, greatly improving the back electromotive force waveform, and achieving precise control and field weakening control; by using gears or pulleys, the rotational power of the outer shell is output through gear transmission or belt transmission, with a compact structure, which is conducive to reducing the volume and weight of the motor; by using a central shaft with external threads, it is convenient to fixedly install the central shaft through the external threads, with a wide range of applications and convenient for installation and disassembly; by using a central shaft in the shape of a stepped shaft, it is convenient to install bearings and stator disks, improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view of the present invention;

[0018] Figure 2 is Figure 1 the sectional structure schematic diagram at A-A in

[0019] Figure 3 is Figure 1 the sectional structure schematic diagram at B-B in

[0020] Figure 4 is the three-dimensional structure schematic diagram of the left shell cover;

[0021] Figure 5 is the three-dimensional structure schematic diagram of the right shell cover;

[0022] Figure 6 is the three-dimensional structure schematic diagram of the central shaft.

[0023] In the figure, 1. left cover, 2. bearing cavity, 3. right cover, 4. central shaft, 5. radial magnetic tile, 6. radial printed winding, 7. radial ring frame, 8. stator disk, 9. right magnetic tile, 10. left magnetic tile, 11. bearing, 12. left magnetic tile limit ring, 13. outer wall of the left cover, 14. outer wall of the right cover, 15. right magnetic tile limit ring, 16. external thread, 17. inner hole platform in the bearing cavity, 18. bearing installation platform, 19. fixing ear, 20. central hole, 21. through hole, 22. stator installation platform. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0025] A double-axial tangential flux motor, comprising a central shaft 4, a stator disc 8, a housing, axial magnetic tiles, a radial ring frame 7 and radial magnetic tiles 5. The stator disc 8 is vertically and fixedly installed on the central shaft 4. The housing is rotatably installed on the central shaft 4. The axial magnetic tiles are arranged on the side of the stator disc 8 with a gap from the stator disc 8. The radial ring frame 7 is installed at the edge of the stator disc 8 and is arranged as an annular structure along the edge of the stator disc 7. The radial magnetic tiles 5 are arranged outside the radial ring frame 7 and are concentric with the radial ring frame 7. Axial printed windings are arranged on the side of the stator disc 8, and radial printed windings are arranged on the radial ring frame 7. The axial magnetic tiles and the radial magnetic tiles 5 are both fixedly installed on the housing. By using printed windings as the stator to replace the stator coils of traditional motors, an ironless armature, small inductance, elimination of magnetic damping and iron loss are achieved, and the iron loss heat source is reduced. By adopting an axial and radial composite magnetic field, it has the characteristics of high power density, high torque density, high efficiency, stable low-speed operation and high cost performance. By adopting the above structure, the volume and weight of the motor are reduced, and at the same time, the efficiency of the motor is improved. Compared with traditional motors, the volume of this motor is 1 / 5 - 1 / 7 of that of traditional motors, and the efficiency is increased by 25% - 35%. Compared with permanent magnet motors, the volume of this motor is 1 / 2 of that of permanent magnet motors, and the efficiency is increased by 10%.

[0026] The axial magnetic tiles include a left magnetic tile 10 and a right magnetic tile 9. Both the left magnetic tile 10 and the right magnetic tile 9 are arranged as annular shapes. The left magnetic tile 10 and the right magnetic tile 9 are respectively located on the left side and the right side of the stator disc 8. Axial printed windings are arranged on both the left side and the right side of the stator disc 8. By setting the left magnetic tile 10 and the right magnetic tile 9, a structure of an intermediate stator and two-side rotors is realized, further improving the efficiency of the motor.

[0027] The housing includes a left cover 1 and a right cover 3. Bearing cavities 2 with central protrusions are arranged on the left side of the left cover 1 and the right side of the right cover 3. Bearings 11 are installed in the bearing cavities 2. The inner rings of the bearings 11 are installed on the central shaft 4, and the outer rings of the bearings 11 are installed in the bearing cavities 2. By setting the housing as the left cover 1 and the right cover 3, it is convenient for installation and disassembly. At the same time, the housing is fixedly installed with the axial magnetic tiles and the radial magnetic tiles 5 to realize synchronous rotation and output power, with high structural stability. A left magnetic tile limiting ring 12 is arranged on the inner side wall of the left cover 1, and a right magnetic tile limiting ring 15 is arranged on the inner side wall of the right cover 3. A left cover outer side wall 13 is arranged on the outer edge of the left cover 1, and a right cover outer side wall 14 is arranged on the outer edge of the right cover 3. The left cover outer side wall 13 and the right cover outer side wall 14 are inserted and installed. By setting the left magnetic tile limiting ring 12 and the right magnetic tile limiting ring 15, the axial magnetic tiles are limited and installed. By setting the left cover outer side wall 13 and the right cover outer side wall 14 for insertion and installation, it is convenient for installation and disassembly, saving time and effort.

[0028] Both the axial printed winding and the radial printed winding are magnetized in the direction of the Halbach (Halbach array) magnetic sheet array. By magnetizing in the direction of the Halbach magnetic sheet array, the magnetic field of the axial magnetic tile has unidirectionality, the yoke material is changed, the yoke thickness is reduced, the back electromotive force waveform is greatly improved, and accurate control and field weakening control are achieved.

[0029] A gear or pulley is provided on the outer radial surface of the housing. By using the gear or pulley, the rotational power of the housing is output through gear transmission or belt transmission, and the structure is compact, which is beneficial to reducing the volume and weight of the motor.

[0030] External threads 16 are provided at both ends of the central shaft 4, and a central hole 20 is provided in the center. By using the central shaft 4 with external threads 16, it is convenient to fixedly install the central shaft 4 through the external threads 16, with a wide range of applications and convenient installation and disassembly.

[0031] The central shaft 4 is arranged as a stepped shaft, including a bearing cavity inner hole platform 17 that is rotationally fitted with the inner hole of the bearing cavity 2, a bearing installation platform 18 for installing the bearing 11, and a stator installation platform 22 for installing the stator disk 8. The diameter of the inner hole platform of the bearing cavity 2 is smaller than the diameter of the bearing installation platform 18, and the diameter of the bearing installation platform 18 is smaller than the diameter of the stator installation platform 22. Radial through holes 21 are also provided on the stator installation platform 22, and the through holes 21 communicate with the central hole 20. By using the stepped shaft-shaped central shaft 4, it is convenient to install the bearing 11 and the stator disk 8, improving the stability of the device. A sealing ring is provided between the bearing cavity 2 and the central shaft 4. By providing the sealing ring, the inside of the bearing cavity 2 is sealed to ensure the safety of the bearing working environment. A plurality of fixing ears 19 are provided on the stator installation platform 22, and the fixing ears 19 and the stator disk 8 are detachably connected by screws. By providing the fixing ears 19, it is convenient to install and disassemble the stator disk 8.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dual-axial tangential flux motor, characterized in that: It includes a central axis, a stator disk, a housing, axial magnetic tiles, a radial ring frame and radial magnetic tiles. The stator disk is vertically and fixedly installed on the central axis. The housing is rotatably installed on the central axis. The axial magnetic tiles are arranged on the side of the stator disk with a gap from the stator disk. The radial ring frame is installed at the edge of the stator disk and is arranged as an annular structure along the edge of the stator disk. The radial magnetic tiles are arranged outside the radial ring frame and are concentric with the radial ring frame. Axial printed windings are arranged on the side of the stator disk, and radial printed windings are arranged on the radial ring frame. The axial magnetic tiles and the radial magnetic tiles are both fixedly installed on the housing; Both the axial printed windings and the radial printed windings are magnetized in the direction of the Halbach magnetic sheet array; The axial magnetic tiles include a left magnetic tile and a right magnetic tile. Both the left magnetic tile and the right magnetic tile are arranged in a ring shape. The left magnetic tile and the right magnetic tile are respectively located on the left side and the right side of the stator disk. Axial printed windings are arranged on both the left side and the right side of the stator disk.

2. The dual-axial tangential flux motor according to claim 1, characterized in that: The housing includes a left cover and a right cover. Bearing cavities with central protrusions are arranged on both the left side of the left cover and the right side of the right cover. Bearings are installed in the bearing cavities. The inner ring of the bearing is installed on the central axis, and the outer ring of the bearing is installed in the bearing cavity.

3. The dual-axial tangential flux motor according to claim 2, characterized in that: A gear or a pulley is arranged on the outer radial surface of the housing.

4. A dual-axial tangential flux motor according to claim 1, characterized in that: External threads are arranged at both ends of the central axis.

5. A dual-axial tangential flux motor according to claim 4, characterized in that: The central axis is arranged as a stepped shaft, including a bearing cavity inner hole platform that is rotationally and fittingly installed with the inner hole of the bearing cavity, a bearing installation platform for installing the bearing, and a stator installation platform for installing the stator disk. The diameter of the bearing cavity inner hole platform is smaller than the diameter of the bearing installation platform, and the diameter of the bearing installation platform is smaller than the diameter of the stator installation platform.

6. A dual-axial tangential flux motor according to claim 2, characterized in that: A sealing ring is arranged between the bearing cavity and the central axis.

7. A dual-axial tangential flux motor according to claim 5, characterized in that: A number of fixing ears are arranged on the stator installation platform. The fixing ears and the stator disk are detachably connected by screws.

8. A dual-axial tangential flux motor according to claim 2, characterized in that: A left magnetic tile limiting ring is arranged on the inner side wall of the left cover, and a right magnetic tile limiting ring is arranged on the inner side wall of the right cover. The outer edge of the left cover is provided with a left cover outer side wall, and the outer edge of the right cover is provided with a right cover outer side wall. The left cover outer side wall and the right cover outer side wall are inserted and installed.

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