A rotor and hybrid excitation disk motor

Abstract

The present invention discloses a rotor, comprising a rotor core and a rotor permanent magnet. Long yokes and short yokes are evenly spaced along the circumference of the rotor on the rotor core to form a magnetic flux path. The present invention provides a rotor that uses a structure in which long yokes and short yokes are alternately spaced on the rotor core, so that the shape of the motor is flattened, which is convenient for application in special space occasions. The rotor is only provided with a rotor core and a rotor permanent magnet, and compared with a traditional rotor, the brush and slip ring structure are omitted, thereby improving the reliability and service life of the rotor and reducing its failure rate. The present invention discloses a hybrid excitation magnetic disc motor, comprising a stator and the aforementioned rotor.

Description

Technical Field

[0001] The present invention relates to the technical field of motor production, and in particular to a rotor and hybrid excitation disk motor. Background Art

[0002] The yokeless segmented armature (YASA) axial flux permanent magnet synchronous generator, consisting of two outer rotors and an inner stator, offers advantages such as high torque density, extremely short axial length, and high efficiency, and has broad application prospects in the new energy vehicle industry. However, the rotor of a conventional axial flux permanent magnet generator is excited by permanent magnet material, resulting in a nearly constant magnetic field. When operating in conjunction with an engine, constant voltage power generation is difficult to maintain as the generator speed changes and the load fluctuates. Furthermore, the generator suffers from the disadvantage of an unadjustable air gap magnetic field, which has become a bottleneck restricting the further development of this type of generator in applications requiring high power quality. Furthermore, the rotor of existing motors is equipped with brushes and slip rings, which not only increases the size and structure of the motor, but also, during use, as the brushes and slip rings wear, can lead to poor contact, reducing the reliability and service life of the rotor and resulting in a high failure rate.

[0003] At the same time, no YASA structure axial flux permanent magnet synchronous motor with a hybrid excitation structure has been retrieved. Summary of the Invention

[0004] The object of the present invention is to provide a rotor to solve the problems in the prior art of a rotor having a brush and a slip ring structure, being bulky, prone to wear, having low reliability, short life and high failure rate.

[0005] To achieve the above objectives, the present invention provides a rotor comprising a rotor core and a rotor permanent magnet. Long yokes and short yokes are evenly spaced apart on the rotor core along the circumference of the rotor to form a magnetic flux path.

[0006] Optionally, a ferromagnetic pole is provided on the long yoke.

[0007] Optionally, the rotor core is provided with rotor slots, which are evenly spaced along the circumference of the rotor core, and the rotor permanent magnets are arranged in the rotor slots along the radial direction of the rotor core, wherein:

[0008] The rotor yoke at the bottom of the rotor slot extends in the radial direction of the rotor core to form a long yoke portion. In the circumferential direction of the rotor core, the rotor yoke adjacent to the long yoke portion forms a short yoke portion.

[0009] Optionally, along the radial direction of the rotor core, the protruding end of the long yoke is located inside the rotor core.

[0010] Optionally, along the radial direction of the rotor core, the protruding end of the long yoke is located outside the rotor core.

[0011] Optionally, along the radial direction of the rotor core, a ferromagnetic pole is provided at one end of the long yoke, and a first support block is provided between the ferromagnetic pole and the rotor permanent magnet.

[0012] Optionally, along the radial direction of the rotor core, a second support block is provided at one end of the short yoke portion for corresponding to the protruding end portion of the long yoke portion.

[0013] Optionally, a pressing block is provided between the first support block and the second support block along the circumference of the rotor core, and the pressing block is arranged along the radial direction of the rotor core for pressing the ferromagnetic pole, the first support block and the second support block.

[0014] Optionally, the pressing block, the first supporting block and the second supporting block are all made of non-magnetic materials.

[0015] Optionally, the rotor further includes a mounting plate for mounting the assembled rotor core and rotor permanent magnets.

[0016] Optionally, the mounting disk includes an inner ring portion and an outer ring portion, and an installation cavity for installing the rotor core and the rotor permanent magnet is formed between the inner ring portion and the outer ring portion. The inner ring portion is provided with a mounting portion, which protrudes radially inwardly along the rotor, and the mounting portion is provided with a mounting hole for installing the rotor.

[0017] The present invention further provides a hybrid excitation disk motor, comprising a stator and a rotor as described in any one of the above embodiments.

[0018] Optionally, an electric excitation component is provided on the stator, which can generate an electric excitation flux for adjusting the magnetic field. The electric excitation flux can form a magnetic circuit of the electric excitation flux between the rotor and the electric excitation component through the magnetic circuit of the long yoke and the short yoke.

[0019] As described above, the rotor provided by the present invention utilizes a structure with alternating long and short yokes on the rotor core, resulting in a flat motor design that is suitable for use in specialized spaces. The rotor consists solely of the rotor core and permanent magnets, eliminating the need for brushes and slip rings compared to conventional rotors. This improves the rotor's reliability and service life, while reducing its failure rate.

[0020] In order to make the above contents of the present invention more clearly understood, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0022] Figure 1A schematic cross-sectional view of the structure of a rotor according to an embodiment of the present invention is shown;

[0023] Figure 2 Schematically shows a structural exploded view of a rotor according to an embodiment of the present invention;

[0024] Figure 3 A schematic structural diagram of a rotor core in a rotor according to an embodiment of the present invention is shown;

[0025] Figure 4 The following schematically shows a structural diagram of a rotor middle pressure block according to an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of the structure of ferromagnetic poles in a rotor according to an embodiment of the present invention is shown;

[0027] Figure 6 A schematic cross-sectional view of the structure of a rotor according to another embodiment of the present invention is shown;

[0028] Figure 7 A schematic structural diagram of a rotor core in a rotor according to another embodiment of the present invention is shown;

[0029] Figure 8 A schematic cross-sectional view of the structure of a hybrid excitation disk motor according to an embodiment of the present invention is shown;

[0030] Figure 9 A schematic cross-sectional view of the structure of a stator in a hybrid excitation disk motor according to an embodiment of the present invention is shown;

[0031] Figure 10 The following schematically shows an exploded view of the structure of a stator in a hybrid excitation disk motor according to an embodiment of the present invention;

[0032] Figure 11 A schematic diagram showing a path diagram of the electric excitation flux in a hybrid excitation disk motor according to an embodiment of the present invention;

[0033] Figure 12 Schematically shows an exploded view of the structure of a stator in a hybrid excitation disk motor according to another embodiment of the present invention;

[0034] Figure 13 The figure schematically shows a path diagram of the electric excitation flux in a hybrid excitation disk motor according to another embodiment of the present invention. DETAILED DESCRIPTION

[0035] The following specific embodiments illustrate the embodiments of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this embodiment. On the contrary, the purpose of introducing the invention in conjunction with the embodiment is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description.

[0036] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] See also Figure 1-7 As shown, an embodiment of the present invention provides a rotor 11, comprising a rotor core 130 and a rotor permanent magnet 131, along the circumference of the rotor 11 (eg Figure 1 The rotor core 130 is provided with long yokes 1302 and short yokes 1303 evenly spaced apart to form a magnetic flux path.

[0038] For details, see Figure 1-7 As shown, in this embodiment, the rotor core 130 and the rotor permanent magnet 131 together form the rotor core assembly 13. The rotor core assembly 13 is the main structure of the rotor 11. The rotor core 130 is provided with a long yoke 1302 and a short yoke 1303. The long yoke 1302 and the short yoke 1303 are arranged along the radial direction of the rotor 11 (as shown in FIG. Figure 1 The long yoke 1302 and the short yoke 1303 extend in the R direction (as shown in the middle) and are evenly spaced along the circumference of the rotor 11. The long yoke 1302 and the short yoke 1303 can guide the magnetic field outside the rotor into and out of the rotor, forming a magnetic flux path, ensuring that the rotor can work stably and reliably.

[0039] This technical solution, employing a structure with alternating long and short yokes on the rotor core, enables a flatter motor design, making it suitable for use in specialized spaces. The rotor consists solely of the rotor core and permanent magnets, eliminating the need for brushes and slip rings compared to conventional rotors. This improves rotor reliability and service life, while reducing failure rates.

[0040] Also, see Figure 8-13 and combined Figure 1-7 As shown, an embodiment of the present invention further provides a hybrid excitation disk motor 1, comprising a stator 12 and the rotor 11 in the above embodiment, along the axial direction of the motor 1 (such as Figure 8As shown in Figure 1, the rotor 11 is provided on both sides of the stator 12. There is a permanent magnetic flux between the rotor 11 and the stator 12. The stator 12 includes an electric excitation component 14. The electric excitation component 14 can generate an electric excitation flux for adjusting the magnetic field (as shown in Figure 1). Figure 11 、 Figure 13 Along the circumference of the rotor 11, the rotor 11 is evenly spaced apart with a long yoke 1302 and a short yoke 1303 for forming a magnetic flux path, wherein:

[0041] The electromagnetic excitation flux generated by the electromagnetic excitation component 14 can sequentially pass through the long yoke 1302 of the rotor 11 on one side, the rotor 11, and the air gap between the rotor 11 and the stator 12 (such as Figure 8 As shown in P in the figure), the stator 12, the air gap between the other rotor 11 and the stator 12, the short yoke 1303 of the other rotor 11, the other rotor 11, the long yoke 1302 of the other rotor 11 and then return to the electromagnetic excitation component 14, forming a complete magnetic circuit of the electromagnetic excitation flux.

[0042] That is to say, the hybrid excitation disk motor 1 is mainly composed of a rotor 11 and a stator 12, and also includes a housing 10 and a motor shaft 101 for mounting the stator 12 and the rotor 11. Figure 8 As shown in the direction A in the middle, cover plates 100 are provided at both ends of the shell 10 for closing the shell 10. The rotor is fixedly mounted on the motor shaft 101 and can rotate together with the motor shaft 101. The stator 12 is fixedly mounted in the shell 10.

[0043] For details, see Figure 8 As shown, in this embodiment, the motor 1 is a dual-rotor, single-stator disc-type motor. The rotor 11 is disposed on either side of the stator 12. An air gap P exists between the rotor 11 and the stator 12. The permanent magnetic components between the stator 12 and the rotor 11 can form a permanent magnetic flux through the air gap P. In the prior art, the magnetic field of this permanent magnetic flux is a constant magnetic flux generated by the permanent magnets. During operation, as the motor speed changes and the load fluctuates, it is difficult to maintain constant voltage power generation. In addition, the magnetic field passing through the air gap cannot be adjusted, which cannot meet the requirements for high power quality.

[0044] To solve this problem, see Figure 8 and combined Figure 11 、 Figure 13 As shown, in this embodiment, an electric excitation component 14 is provided on the stator 12. The electric excitation component 14 can generate an electric excitation flux for adjusting the magnetic field. The electric excitation flux generated by the electric excitation component 14 can sequentially pass through one side rotor 11, the air gap between the rotor 11 and the stator 12, the stator 12, the air gap between the other rotor 11 and the stator 12, the other rotor 11, and then return to the electric excitation component 14, forming a complete magnetic circuit of the electric excitation flux.

[0045] That is, by providing an electric excitation assembly 14 on the stator 12 and passing current through the electric excitation assembly 14, an electric excitation flux can be generated. The electric excitation flux can pass through the air gap between the rotor 11 and the stator 12. By changing the direction of the current in the electric excitation assembly 14, the magnetic field direction of the electric excitation flux can be changed. When the magnetic field direction of the electric excitation flux is the same as the magnetic field direction of the permanent magnet flux, the electric excitation flux can increase the magnetic field strength in the air gap. When the magnetic field direction of the electric excitation flux is opposite to the magnetic field direction of the permanent magnet flux, the electric excitation flux can weaken the magnetic field strength in the air gap, thereby adjusting the magnetic field in the air gap, and further magnetizing or demagnetizing the magnetic field in the air gap between the stator 12 and the rotor 11 in the motor 1, so that the output voltage of the motor 1 remains stable when the load fluctuates and the speed changes.

[0046] Further, see Figure 1-7 As shown, in this embodiment, along the circumference of the rotor 11, the rotor 11 is evenly spaced with a long yoke 1302 and a short yoke 1303 to form a magnetic flux path. The electric excitation magnetic flux can form an electric excitation magnetic flux between the rotor 11 and the electric excitation component 14 through the magnetic path of the long yoke 1302 and the short yoke 1303. Specifically, the electric excitation magnetic flux generated by the electric excitation component 14 can sequentially pass through the long yoke 1302 of the rotor 11 on one side, the rotor 11, and the air gap between the rotor 11 and the stator 12 (as shown in FIG. Figure 8 As shown in P in the figure), the stator 12, the air gap between the other rotor 11 and the stator 12, the short yoke 1303 of the other rotor 11, the other rotor 11, the long yoke 1302 of the other rotor 11 and then return to the electromagnetic excitation component 14, forming a complete magnetic circuit of the electromagnetic excitation flux.

[0047] That is to say, in order to guide the electromagnetic excitation flux to stably and effectively form a complete magnetic circuit inside the motor, a long yoke 1302 and a short yoke 1303 are evenly spaced on the rotor 11, wherein the electromagnetic excitation flux generated by the electromagnetic excitation component 14 can pass through the air gap between the stator 12 and one side of the rotor 11 after being emitted from the electromagnetic excitation component 14, and enter the rotor 11 through the long yoke 1302 of the rotor 11.

[0048] The electromagnetic flux enters the rotor 11 and radiates radially, then passes through the air gap into the stator 12. After exiting the stator 12, it passes through the air gap between the stator 12 and the other rotor 11 and enters the short yoke 1303 of the other rotor 11. It then travels one pole pitch along the circumference of the rotor 11 before returning radially to the long yoke 1302 on the rotor 11. After passing through the air gap, it returns to the electromagnetic assembly 14, forming a closed loop. By employing a structure in which the long yoke 1302 and the short yoke 1303 alternately spaced on the rotor 11, the electromagnetic assembly 14 can be placed on the stator. This allows for full utilization of the permanent magnet's main magnetic flux path and the electromagnetic excitation's auxiliary magnetic flux path within a limited space, thus achieving a brushless hybrid excitation method.

[0049] By adopting the above technical solution, by arranging an electric excitation component on the stator, the magnetic field in the air gap can be adjusted, thereby achieving magnetization or demagnetization of the magnetic field in the air gap between the stator and the rotor in the motor, so that the output voltage of the motor can be kept stable when the load fluctuates and the speed changes. At the same time, by adopting a structure in which long yokes and short yokes are alternately spaced on the rotor, the electric excitation component arranged on the stator can form an electric excitation magnetic circuit through the long yokes and the short yokes, and the shape of the motor can be flattened, which is convenient for application in special spatial occasions. In a limited space, the main magnetic flux path of the permanent magnet and the auxiliary magnetic flux path of the electric excitation can be fully utilized to adjust the air gap magnetic field through a brushless hybrid excitation method. In addition, the rotor is only provided with a rotor core and a rotor permanent magnet. Compared with the traditional rotor, the brush and slip ring structure are omitted, which improves the reliability and service life of the rotor and reduces its failure rate.

[0050] Further, see Figure 1-7 and combined Figure 8-13 As shown, in the present invention, a ferromagnetic pole 132 is provided on the long yoke 1302. The ferromagnetic pole 132 can generate electromagnetic induction under the action of the electric excitation flux generated by the electric excitation component 14, so that it has the same magnetic properties as the electric excitation flux. That is, the ferromagnetic pole 132 is magnetizable, and the electric excitation flux generated by the electric excitation component 14 can stably and reliably enter the long yoke 1302 of the rotor 11 through the ferromagnetic pole 132. At the same time, the electric excitation flux that enters the rotor 11 after passing through the stator 12 can also return to the electric excitation component 14 through the ferromagnetic pole 132. In this embodiment, the ferromagnetic pole 132 is any one of soft magnetic material (SMC), silicon steel material, and amorphous material. In other embodiments, the ferromagnetic pole can also be of other structures, which is not limited by the present invention, as long as it can guide the electric excitation flux.

[0051] See also Figure 1-7 and combined Figure 8-13As shown, in this embodiment, the rotor 11 includes a rotor core assembly 13, and the rotor core assembly 13 includes: a rotor core 130, provided with rotor slots 1300, and the rotor slots 1300 are arranged along the circumference of the rotor core 130 (such as Figure 1 The rotor permanent magnets 131 are arranged evenly spaced along the radial direction of the rotor core 130 (as shown in the T direction); Figure 1 The rotor yoke 1301 at the bottom of the rotor slot 1300 extends radially along the rotor core 130 to form a long yoke portion 1302, and in the circumferential direction of the rotor core 130, the rotor yoke 1301 adjacent to the long yoke portion 1302 forms a short yoke portion 1303.

[0052] That is to say, the core assembly 13 of the rotor 11 is mainly composed of a rotor core 130 and a rotor permanent magnet 131, wherein a rotor slot 1300 is provided on the rotor core 130, the rotor slot 1300 is arranged along the radial direction of the rotor core 130, and is evenly arranged along the circumferential direction of the rotor core 130, adjacent rotor slots 1300 are separated by T-shaped steps 1304, and the rotor permanent magnet 131 is radially inserted into the rotor slot 1300 and is limited on the rotor core 130 by the T-shaped steps 1304.

[0053] Also, see Figure 1-7 and combined Figure 8-13 As shown, a rotor yoke 1301 is formed at the bottom of the rotor slot 1300 on the rotor core 130, and an end portion of the rotor yoke 1301 protrudes from the rotor yoke 1301 in the radial direction of the rotor core 130 to form a long yoke portion 1302. The long yoke portions 1302 are evenly arranged in the circumferential direction of the rotor core 130, and the length of the rotor yoke 1301 between adjacent long yoke portions 1302 in the radial direction of the rotor core 130 remains unchanged, forming a short yoke portion 1303.

[0054] That is, the lengths of the short yoke 1303 and the long yoke 1302 are relative to their lengths in the radial direction of the rotor core 130. The rotor yoke 1301 that is longer in the radial direction of the rotor core 130 is the long yoke 1302, and the rotor yoke 1301 that is shorter in the radial direction of the rotor core 130 is the short yoke 1303. The portion of the long yoke 1302 that is longer than the short yoke 1303 is used to mount the ferromagnetic poles 132, thereby guiding the electromagnetic excitation flux into the rotor core 130. By alternately arranging the short yoke 1303 and the long yoke 1302 along the circumference of the rotor core 130, the electromagnetic excitation flux can be effectively transmitted with the electromagnetic excitation assembly 14 provided on the stator 12, thereby achieving regulation of the magnetic field in the air gap, so that the output voltage of the motor 1 remains stable when the load fluctuates and the speed changes.

[0055] Specifically, the present invention does not limit whether the end of the long yoke 1302 protrudes inward or outward, as long as it can facilitate the installation of the ferromagnetic pole 132 and guide the electromagnetic excitation flux into the rotor core 130. Figure 1-5 As shown, in this embodiment, along the radial direction of the rotor core 130, the protruding end of the long yoke 1302 is located on the inner side of the rotor core 130. Figure 9-11 As shown, in this embodiment, the electromagnetic component 14 is located at the center of the stator 12 and is in close contact with the wall of the center hole 125 of the stator 12. The electromagnetic flux generated by the electromagnetic component 14 can pass through the magnetic path of the ferromagnetic pole 132 and enter the rotor core 130 through the long yoke 1302 on the rotor core 130. At the same time, the electromagnetic flux can also pass through the long yoke 1302 on the rotor core 130 and pass through the ferromagnetic pole 132 from the rotor core 130 back to the electromagnetic component 14, thereby forming a complete magnetic path of the electromagnetic flux.

[0056] For details, see Figure 6-7 As shown, in another embodiment of the present invention, along the radial direction of the rotor core 130, the protruding end of the long yoke 1302 is located outside the rotor core 130. Figure 12-13 As shown, the electromagnetic component 14 is also located on the outside of the stator 12. The electromagnetic flux generated by the electromagnetic component 14 can pass through the magnetic path of the ferromagnetic pole 132 and enter the rotor core 130 through the long yoke 1302 on the rotor core 130. At the same time, the electromagnetic flux can also pass through the long yoke 1302 on the rotor core 130 and pass through the ferromagnetic pole 132 from the rotor core 130 back to the electromagnetic component 14, thereby forming a complete magnetic path of the electromagnetic flux.

[0057] Further, see Figure 1-7 and combined Figure 8-13 As shown, in the present invention, along the radial direction of the rotor core 130 , a ferromagnetic pole 132 is provided at one end of the long yoke 1302 , and a first support block 133 is provided between the ferromagnetic pole 132 and the rotor permanent magnet 131 .

[0058] Specifically, the long yoke 1302 is provided with a ferromagnetic pole 132, a first support block 133, and a rotor permanent magnet 131 in the radial direction of the rotor core 130. The rotor permanent magnet 131 is disposed within the rotor slot 1300. Steps are provided on either side of the rotor permanent magnet 131 circumferentially of the rotor core 130. The protruding wings on either side of the T-shaped step 1304 can compress the steps on either side of the rotor permanent magnet 131, ensuring that the rotor permanent magnet 131 is stably mounted within the rotor slot 1300. The first support block 133 is disposed between the ferromagnetic pole 132 and the rotor permanent magnet 131. The first support block 133 is made of a non-magnetic material. By providing first support blocks 133 of different sizes, ferromagnetic poles 132 of different sizes can be provided. By changing the ferromagnetic poles 132 of different sizes, the area of ​​the ferromagnetic poles 132 receiving the electromagnetic excitation flux can be changed, thereby varying the magnetic path of the electromagnetic excitation flux and the intensity of the electromagnetic excitation flux entering the rotor core 130.

[0059] At the same time, in order to ensure that the rotor permanent magnet 131 on the short yoke 1303 can be stably installed in the rotor slot 1300, see Figure 1-7 and combined Figure 8-13 As shown, in the present invention, a second support block 134 is provided at one end of the short yoke 1303 in the radial direction of the rotor core 130, adapted to correspond to the protruding end of the long yoke 1302. Second support block 134 is made of a non-magnetic material. Providing second support block 134 not only defines the position of the rotor permanent magnets 131 but also fills the gap between the short yoke 1303 and the long yoke 1302, thereby further completing the rotor 11.

[0060] Furthermore, in order to ensure that the first support block 133, the second support block 134 and the ferromagnetic pole 132 can be stably and reliably arranged on the long yoke 1302, see Figure 1-7 and combined Figure 8-13 As shown, in the present invention, a pressing block 135 is provided between the first support block 133 and the second support block 134 along the circumference of the rotor core 130 , and the pressing block 135 is arranged along the radial direction of the rotor core 130 to press the ferromagnetic pole 132 , the first support block 133 and the second support block 134 .

[0061] Specifically, the pressing block 135 is made of non-magnetic material, wherein, in the circumferential direction of the rotor core 130, both sides of the first support block 133 and the second support block 134 are provided with steps 137 with a structure similar to that on both sides of the ferromagnetic pole 132. The pressing block 135 is a T-shaped pressing block, and the protruding wings on both sides of the pressing block 135 can press the ferromagnetic pole 132, the first support block 133 and the second support block 134, so that the first support block 133, the second support block 134 and the ferromagnetic pole 132 can be stably and reliably installed on the long yoke 1302.

[0062] Further, see Figure 1-7and combined Figure 8-13 As shown, in the present invention, the rotor 11 further includes a mounting plate 110 for mounting the assembled rotor core assembly 13. By mounting the rotor core assembly 13 in the mounting plate 110, the rotor core assembly 13 can be mounted more compactly, ensuring that the entire rotor 11 can operate stably and reliably.

[0063] For details, see Figure 1-7 and combined Figure 8-13 As shown, in the present invention, the mounting plate 110 includes an inner ring portion 111 and an outer ring portion 112, and a mounting cavity 113 for mounting the rotor core assembly 13 is formed between the inner ring portion 111 and the outer ring portion 112. The inner ring portion 111 is provided with a mounting portion 114, which protrudes radially inwardly of the rotor 11, and the mounting portion 114 is provided with a mounting hole 115 for mounting the rotor 11.

[0064] That is, the cavity between the inner ring portion 111 and the outer ring portion 112 of the mounting plate 110 forms a mounting cavity 113 for mounting the rotor core assembly 13. The rotor core assembly 13 can be assembled directly within the mounting cavity 113, or it can be assembled and then completely installed within the mounting cavity 113 to form a complete rotor 11, facilitating the installation of the rotor core assembly 13. Furthermore, by providing a mounting portion 114 on the inner side of the inner ring portion 111, the entire rotor 11 can be easily mounted on the motor shaft 101.

[0065] Further, see Figure 8-13 1-7 , in the present invention, the electric excitation component 14 includes a coil component 140 and a magnetic conductive sleeve 141 . The magnetic conductive sleeve 141 is coaxially arranged with the coil component 140 to conduct the electric excitation magnetic flux generated by the coil component 140 .

[0066] That is, the electromagnetic excitation component 14 is mainly composed of a magnetic sleeve 141 and a coil component 140, wherein the magnetic sleeve 141 is arranged on the inner side or the outer side of the coil component 140, and is coaxially arranged with the coil component 140 to conduct the electromagnetic excitation flux generated by the coil component 140, so that the electromagnetic excitation flux generated by the coil component 140 passes through the air gap into the rotor, ensuring that the electromagnetic excitation flux generated by the coil component 140 can effectively adjust the magnetic field in the air gap.

[0067] For details, see Figure 8-13 In conjunction with Figures 1-7 , in the present invention, coil assembly 140 includes a coil 142 and an insulating frame 143. Coil 142 is wound around insulating frame 143, and magnetic sleeve 141 is coaxially disposed with insulating frame 143. Magnetic sleeve 141 is mounted on the inside or outside of insulating frame 143 and coaxially disposed with insulating frame 143. By winding coil 142 around insulating frame 143, installation of coil 142 is facilitated.

[0068] Further, see Figure 8-13 In conjunction with Figures 1-7 , in the present invention, the stator 12 further includes an armature 120 for generating permanent magnetic flux. The armature 120 is coaxially arranged with the electric excitation assembly 14. Assembling the electric excitation assembly 14 and the armature 120 together to form the stator 12 provides a simple structure and facilitates assembly. In this embodiment, the armature 120 is a yokeless segmented armature. In other embodiments, the armature can have other structures, which are not limited by the present invention, as long as they can form a stator together with the electric excitation assembly.

[0069] Further, see Figure 8-13 In combination with Figures 1-7, in the present invention, the armature 120 includes: an armature plate 121, which is provided with armature slots 122, and the armature slots 122 are evenly spaced along the circumference of the armature plate 121; an armature core 123, which is provided with a winding coil 124, wherein the armature plates 121 are located at both ends of the armature core 123, the ends of the armature core 123 are located in the armature slots 122, and the winding coil 124 is located between the armature plates 121.

[0070] Specifically, the armature 120 primarily consists of an armature plate 121 and an armature core 123. The armature core 123 is provided with winding coils 124 for forming the stator windings. Armature slots 122 are uniformly arranged along the circumference of the armature plate 121. The armature plate 121 comprises two upper and lower plates. The armature core 123, with the winding coils 124 wound therearound, is disposed between the upper and lower armature plates 121. The two ends of the armature core 123 are respectively inserted into the armature slots 122 of the upper and lower armature plates 121, with the winding coils 124 positioned between the armature plates 121. This plug-in assembly ensures that the armature core 123 and the armature plate 121 are stably and reliably assembled, facilitating assembly. Furthermore, both the armature plate 121 and the armature core 123 can be designed using standard components, facilitating production and processing, thereby improving assembly efficiency and production efficiency of the stator 12.

[0071] It should be noted that the present invention does not limit the radial positions of the electric excitation assembly and the armature in the rotor, and can be reasonably selected according to actual needs, as long as the electric excitation assembly can effectively adjust the magnetic field strength in the air gap.

[0072] For details, see Figure 9-11 As shown, in this embodiment, the magnetic conductive sleeve 141 of the electric excitation assembly 14 is in close contact with the hole wall of the central hole 125 on the armature plate 121 , and the coil assembly 140 of the electric excitation assembly 14 is located between the armature plates 121 .

[0073] That is, the electric excitation assembly 14 is located at the center of the armature 120, the magnetic sleeve 141 is in close contact with the wall of the center hole 125 on the armature plate 121, and the electric excitation flux generated by the electric excitation assembly 14 can enter the rotor core 130 through the long yoke 1302 on the rotor core 130 under the guidance of the ferromagnetic pole 132. Figure 1-5 As shown, in this embodiment, along the radial direction of the rotor core 130 , the protruding end of the long yoke 1302 is located on the inner side of the rotor core 130 .

[0074] For details, see Figure 12-13 As shown, in another embodiment of the present invention, the magnetic conductive sleeve 141 of the electric excitation assembly 14 is in close contact with the outer edge of the armature plate 121 , and the coil assembly 140 of the electric excitation assembly 14 is located between the armature plates 121 .

[0075] That is, the electric excitation assembly 14 is also located outside the stator 12, and the upper and lower ends of the magnetic conductive sleeve 141 are connected to the outer edges of the armature plate 121. The electric excitation flux generated by the electric excitation assembly 14 can enter the rotor core 130 through the long yoke 1302 on the rotor core 130 under the guidance of the ferromagnetic pole 132. Figure 5-7 As shown, along the radial direction of the rotor core 130 , the protruding end of the long yoke 1302 is located outside the rotor core 130 .

[0076] For details, see Figure 12-13 As shown, in another embodiment of the present invention, a protrusion 126 is provided on the outer edge of the armature plate 121, and grooves 144 are provided at the upper and lower ends of the magnetic conductive sleeve 141. The grooves 144 engage with the protrusions 126. In other words, the upper and lower ends of the magnetic conductive sleeve 141 are connected to the upper and lower armature plates 121 by engaging the grooves 144 with the protrusions 126. This snap-on connection method is simple to assemble and provides a secure fastening, allowing the electromagnetic excitation assembly 14 to be stably and reliably assembled with the armature 120 to form the stator 12.

[0077] In other embodiments, the electric excitation assembly may be assembled with the armature in other forms, and the present invention does not limit this, as long as it is ensured that the electric excitation assembly can be stably and reliably assembled with the armature.

[0078] As described above, the technical solution applied to the present invention is a hybrid excitation disk motor provided by the present invention. By arranging an electric excitation component on the stator, the magnetic field in the air gap is adjusted, thereby achieving magnetization or demagnetization of the magnetic field in the air gap between the stator and the rotor in the motor, so that the output voltage of the motor remains stable when the load fluctuates and the speed changes. At the same time, by adopting a structure in which long yokes and short yokes are alternately spaced on the rotor, the electric excitation component arranged on the stator can form an electric excitation magnetic circuit through the long yoke and the short yoke, and the shape of the motor is flattened, which is conducive to application in special space occasions. In a limited space, the main magnetic flux path of the permanent magnet and the auxiliary magnetic flux path of the electric excitation can be fully utilized to achieve the adjustment of the air gap magnetic field through a brushless hybrid excitation method.

[0079] In summary, the above embodiments provided by the present invention are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical concepts disclosed herein shall be encompassed by the claims of the present invention.

Claims

1. A rotor comprising a rotor core and a rotor permanent magnet, characterized in that: Applied to a disc-type motor, long yokes and short yokes are evenly spaced along the circumference of the rotor on the rotor core to form a magnetic flux path, rotor slots are provided on the rotor core, and the rotor slots are evenly spaced along the circumference of the rotor core. The rotor permanent magnets are arranged in the rotor slots along the radial direction of the rotor core, and the rotor yokes at the bottom of the rotor slots extend along the radial direction of the rotor core to form the long yokes. In the circumference of the rotor core, the rotor yokes adjacent to the long yokes in the radial direction of the rotor core remain unchanged to form the short yokes.

2. The rotor according to claim 1, wherein: The long yoke is provided with a ferromagnetic pole.

3. The rotor according to claim 1 or 2, characterized in that Along the radial direction of the rotor core, the protruding end of the long yoke is located on the inner side of the rotor core.

4. The rotor according to claim 1 or 2, characterized in that: Along the radial direction of the rotor core, the protruding end of the long yoke is located outside the rotor core.

5. The rotor according to claim 1 or 2, characterized in that: Along the radial direction of the rotor core, one end of the long yoke is provided with a ferromagnetic pole, and a first support block is provided between the ferromagnetic pole and the rotor permanent magnet.

6. The rotor according to claim 5, wherein: Along the radial direction of the rotor core, a second support block is provided at one end of the short yoke portion for corresponding to the protruding end portion of the long yoke portion.

7. The rotor according to claim 6, wherein: A pressing block is provided between the first support block and the second support block along the circumference of the rotor core. The pressing block is arranged along the radial direction of the rotor core and is used to press the rotor ferromagnetic pole, the first support block and the second support block.

8. The rotor according to claim 7, wherein: The pressing block, the first supporting block and the second supporting block are all made of non-magnetic conductive materials.

9. The rotor according to claim 1 or 2, characterized in that: The rotor further includes a mounting plate for mounting the assembled rotor core and the rotor permanent magnet.

10. The rotor according to claim 9, wherein: The mounting plate includes an inner ring portion and an outer ring portion, and a mounting cavity for mounting the rotor core and the rotor permanent magnet is formed between the inner ring portion and the outer ring portion. The inner ring portion is provided with a mounting portion, and the mounting portion protrudes inward along the radial direction of the rotor. The mounting portion is provided with a mounting hole for mounting the rotor.

11. A hybrid excitation disk motor, characterized in that: The invention comprises a stator and a rotor according to any one of claims 1 to 10.

12. The hybrid excitation disk motor according to claim 11, wherein: The stator is provided with an electric excitation component, which can generate an electric excitation flux for adjusting the magnetic field. The electric excitation flux can form a magnetic circuit of the electric excitation flux between the rotor and the electric excitation component through the magnetic circuit of the long yoke and the short yoke.

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