Permanent magnet motor rotor structure and permanent magnet motor

Abstract

The utility model provides a permanent magnet motor rotor structure and a permanent magnet motor, and relates to the technical field of permanent magnet motors. The magneto rotor structure comprises a central shaft, an iron core structure, a first pressing plate assembly and a second pressing plate assembly. The iron core structure sleeves the central shaft; a plurality of mounting grooves in the axial direction are formed in the iron core structure; and permanent magnets are arranged in the plurality of mounting grooves. The first pressing plate assembly is arranged at one end of the iron core structure; a plurality of grooves are formed in the side face, close to the iron core structure, of the first pressing plate assembly, the grooves correspond to the mounting grooves one to one, and part of the grooves directly face the corresponding mounting grooves; in the radial direction of the center shaft, the groove forms an opening in the outer side of the first pressing plate assembly. The second pressing plate assembly is arranged at the other end of the iron core structure. The permanent magnet motor provided by the utility model adopts the permanent magnet motor rotor structure. The permanent magnet motor rotor structure and the permanent magnet motor provided by the utility model can improve the technical problem that the rotor of the permanent magnet motor is difficult to disassemble and assemble.

Description

Technical Field

[0001] This utility model relates to the field of permanent magnet motor technology, and more specifically, to a permanent magnet motor rotor structure and a permanent magnet motor. Background Technology

[0002] Currently, water-cooled explosion-proof permanent magnet motors for mining are widely used in underground coal mine power units due to their high efficiency and energy saving. Mining permanent magnet motor rotors mostly adopt an embedded permanent magnet structure, which is reliable and has excellent performance. Traditional permanent magnet motor rotors have complex structures. The disassembly, manufacturing, and assembly of the motor rotor are complicated because the permanent magnets have strong magnetism, which can easily cause them to repel each other, making proper installation difficult. Furthermore, to ensure a secure installation, the structure is often quite complex, causing problems for the assembly of the permanent magnet motor rotor. Once a permanent magnet motor malfunctions, it often demagnetizes and becomes unusable. In this case, it is necessary to replace the permanent magnets inside the motor rotor. Therefore, the ease of disassembly and assembly of the permanent magnets in the motor rotor structure is particularly important. Utility Model Content

[0003] The technical problem solved by this utility model is how to improve the technical problem of the high difficulty of disassembling and assembling the rotor of the permanent magnet motor in the prior art.

[0004] The embodiments of this utility model can be implemented as follows:

[0005] This utility model provides a permanent magnet motor rotor structure, including:

[0006] Central axis;

[0007] A core structure is fitted onto the central shaft; multiple mounting slots are provided on the core structure along the axial direction of the central shaft, and the multiple mounting slots are arranged around the central shaft; a permanent magnet is provided in each of the multiple mounting slots;

[0008] A first pressure plate assembly is disposed at one end of the iron core structure and covers the mounting groove; the first pressure plate assembly has a plurality of grooves on its side near the iron core structure, the plurality of grooves corresponding one-to-one with the plurality of mounting grooves, and some of the grooves are directly opposite the corresponding mounting grooves; in the radial direction of the central axis, the grooves form openings on the outside of the first pressure plate assembly.

[0009] The second pressure plate assembly is located at the other end of the iron core structure and covers the mounting groove.

[0010] The advantages of the permanent magnet motor rotor structure provided by this utility model compared to the prior art include:

[0011] When assembling this permanent magnet motor rotor structure, a pressure plate can be used to first seal the permanent magnet within the mounting slot, preventing improper installation due to mutual repulsion. After the permanent magnet is in place, the first pressure plate assembly is then assembled to the end of the core structure to cover the mounting slot, thus sealing the permanent magnet. At this point, the pressure plate aligns with the groove, ensuring the first pressure plate assembly stably seals the permanent magnet and guarantees its proper installation. Finally, the pressure plate is removed from the opening of the groove. Based on this, the permanent magnet motor rotor structure utilizes the groove on the first pressure plate assembly and the pressure plate to seal the permanent magnet, facilitating its installation. After the permanent magnet and the first pressure plate assembly are in place, the pressure plate can be easily removed from the groove opening, readily completing the permanent magnet's installation and reducing the assembly difficulty of the permanent magnet motor rotor structure. When it is necessary to disassemble the permanent magnet motor rotor structure, the disassembly can be completed simply by removing the first and second pressure plate assemblies from both ends of the iron core structure, thus reducing the difficulty of disassembling the permanent magnet motor rotor structure. Therefore, the permanent magnet motor rotor structure provided by this utility model can improve the technical problem of high difficulty in disassembling and assembling permanent magnet motor rotors in the prior art.

[0012] Optionally, the first pressure plate assembly is further provided with a plurality of receiving slots on the side near the iron core structure, and the plurality of receiving slots correspond one-to-one with the plurality of mounting slots, and the plurality of grooves correspond one-to-one with the plurality of receiving slots; the grooves are connected to the corresponding receiving slots; the permanent magnet motor rotor structure further includes a plurality of insulating pads, the plurality of insulating pads correspond one-to-one with the plurality of receiving slots, and the insulating pads are accommodated inside the corresponding receiving slots.

[0013] Optionally, in the thickness direction of the first pressure plate assembly, the depth of the groove is less than the depth of the receiving groove.

[0014] Optionally, the first pressure plate assembly includes a first pressure plate and a first heat sink; the first pressure plate is attached to the iron core structure, and the first heat sink is disposed on the side of the first pressure plate away from the iron core structure; the groove and the receiving slot are both formed on the first pressure plate, and the receiving slot penetrates the first pressure plate along the thickness direction of the first pressure plate, and the first heat sink covers the receiving slot.

[0015] Optionally, the core structure is further provided with multiple heat dissipation channels, all of which penetrate the core structure along the axial direction of the central axis and are arranged around the central axis.

[0016] The first pressure plate has a plurality of first heat dissipation holes that correspond one-to-one with the plurality of heat dissipation channels; the first heat dissipation plate is annular, and the plurality of heat dissipation channels correspond to the internal cavity of the first heat dissipation plate.

[0017] Optionally, the first heat sink has multiple blades integrated on the side away from the first pressure plate, and the multiple blades are arranged at intervals along an annular path.

[0018] Optionally, the second pressure plate assembly includes a second pressure plate and a second heat sink; the second pressure plate is attached to the iron core structure, and the second heat sink is disposed on the side of the second pressure plate away from the iron core structure; the second pressure plate covers the mounting groove; and multiple blades are integrated on the side of the second heat sink away from the second pressure plate.

[0019] Optionally, the second pressure plate is provided with a plurality of second heat dissipation holes, and the plurality of second heat dissipation holes correspond one-to-one with the plurality of heat dissipation channels on the iron core structure; the second heat dissipation plate is annular, and the plurality of second heat dissipation holes correspond to the internal cavity of the second heat dissipation plate.

[0020] Optionally, the permanent magnet motor rotor structure further includes multiple connecting rods and multiple connecting pieces; the connecting rods sequentially pass through the first pressure plate assembly, the iron core structure, and the second pressure plate assembly; both ends of the connecting rods are detachably connected to the connecting pieces to fix the first pressure plate assembly, the iron core structure, and the second pressure plate assembly; the multiple connecting rods are arranged around the central axis.

[0021] A permanent magnet motor includes a pressure plate and the aforementioned permanent magnet motor rotor structure; the pressure plate is used to fit against the iron core structure to seal the permanent magnet, and the pressure plate can be pulled out of the groove from the opening.

[0022] The permanent magnet motor provided by this utility model adopts the above-mentioned permanent magnet motor rotor structure. The beneficial effects of this permanent magnet motor compared with the prior art are the same as the beneficial effects of the permanent magnet motor rotor structure provided above compared with the prior art, and will not be repeated here. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the permanent magnet motor rotor structure provided in the embodiments of this application;

[0025] Figure 2 This is an exploded structural diagram of the permanent magnet motor rotor structure provided in the embodiments of this application;

[0026] Figure 3 This is a schematic diagram of the structure of the first pressure plate provided in the embodiments of this application;

[0027] Figure 4 for Figure 1 Enlarged structural diagram at point A;

[0028] Figure 5 This is a partially enlarged schematic diagram of the first pressure plate in an embodiment of this application.

[0029] Icons: Permanent magnet motor rotor structure 10, central shaft 100, iron core structure 200, mounting groove 201, permanent magnet 210, heat dissipation channel 220, first pressure plate assembly 300, groove 301, opening 302, receiving groove 303, first pressure plate 310, first heat dissipation hole 311, first heat dissipation plate 320, blade 330, second pressure plate assembly 400, second pressure plate 410, second heat dissipation hole 411, second heat dissipation plate 420, connecting rod 500, connecting piece 510. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0035] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0036] This application provides a permanent magnet motor rotor structure 10 and a permanent magnet motor. The permanent magnet motor adopts the permanent magnet motor rotor of this embodiment. The permanent magnet motor rotor structure 10 and the permanent magnet motor can improve the technical problem of difficult rotor disassembly and assembly of permanent magnet motors in the prior art.

[0037] In this embodiment, the permanent magnet motor includes a pressure plate and a permanent magnet motor rotor structure 10. The pressure plate is used to assist in the installation of the permanent magnet motor rotor structure 10, so as to facilitate the efficient assembly of the permanent magnet motor rotor structure 10. Of course, the permanent magnet motor also includes existing structures such as a stator structure and winding coils to realize the function of the permanent magnet motor, which will not be described in detail here.

[0038] In this embodiment, please refer to the following: Figures 1 to 3 The permanent magnet motor rotor structure 10 includes a central shaft 100, a core structure 200, a first pressure plate 310 assembly 300, and a second pressure plate 410 assembly 400. The core structure 200 is sleeved on the central shaft 100 and is formed by stacking multiple silicon steel sheets, meaning that multiple silicon steel sheets are all sleeved on the central shaft 100. Along the axial direction of the central shaft 100, the core structure 200 has multiple mounting slots 201 arranged around the central shaft 100; each mounting slot 201 contains a permanent magnet 210. The first pressure plate 310 assembly 300 is located at one end of the core structure 200 and covers the mounting slot 201; wherein, the first pressure plate 310 assembly 300 adheres to the end face of the core structure 200 to seal the mounting slot 201. The first pressure plate 310 assembly 300 has multiple grooves 301 on its side near the iron core structure 200. Each groove 301 corresponds one-to-one with a mounting slot 201, and some grooves 301 are directly opposite their corresponding mounting slots 201. In the radial direction of the central axis 100, the grooves 301 form openings 302 on the outer side of the first pressure plate 310 assembly 300, such as... Figure 4As shown. The second pressure plate 410 assembly 400 is located at the other end of the iron core structure 200 and covers the mounting groove 201.

[0039] During the assembly of the permanent magnet motor rotor structure 10, the first pressure plate 310 assembly 300, multiple silicon steel sheets of the core structure 200, and the second pressure plate 410 assembly 400 are sequentially fitted onto the central shaft 100. When inserting the permanent magnet 210 into the mounting groove 201, the mounting groove 201 can be sealed with a pressure plate to ensure that the multiple permanent magnets 210 are properly installed. Once the permanent magnets 210 are in place, the first pressure plate 310 assembly 300, the core structure 200, and the second pressure plate 410 assembly 400 are reinforced. At this time, the groove 301 can avoid the pressure plate, allowing the first pressure plate 310 assembly 300 to fit against the core structure 200 to seal the mounting groove 201. After the first pressure plate 310 assembly 300, the core structure 200, and the second pressure plate 410 assembly 400 are assembled, the pressure plate can be removed from the opening 302 of the groove 301.

[0040] As described above, when assembling the permanent magnet motor rotor structure 10, a pressure plate can be used to first seal the permanent magnet 210 within the mounting groove 201 to prevent the permanent magnet 210 from being improperly installed due to mutual repulsion. After the permanent magnet 210 is installed in place, the first pressure plate 310 assembly 300 is then assembled onto the end of the core structure 200 to cover the mounting groove 201, thus completing the sealing of the permanent magnet 210. At this point, the pressure plate corresponds to the position of the groove 301, enabling the first pressure plate 310 assembly 300 to stably seal the permanent magnet 210, ensuring that the permanent magnet 210 is installed in place. Finally, the pressure plate can be pulled out from the opening 302 of the groove 301. Based on this, the permanent magnet motor rotor structure 10 can achieve the sealing of the permanent magnet 210 by using a pressure plate through the groove 301 on the first pressure plate 310 assembly 300, facilitating the installation of the permanent magnet 210. After the permanent magnet 210 and the first pressure plate 310 assembly 300 are installed, the pressure plate can be pulled out from the opening 302 of the groove 301, easily completing the installation of the permanent magnet 210 and reducing the assembly difficulty of the permanent magnet motor rotor structure 10. When it is necessary to disassemble the permanent magnet motor rotor structure 10, it is only necessary to remove the first pressure plate 310 assembly 300 and the second pressure plate 410 assembly 400 from both ends of the iron core structure 200 to complete the disassembly of the permanent magnet motor rotor structure 10, which also reduces the disassembly difficulty of the permanent magnet motor rotor structure 10. Therefore, the permanent magnet motor rotor structure 10 provided by this utility model can improve the technical problem of high difficulty in disassembling and assembling the rotor of the permanent magnet motor in the prior art.

[0041] In this embodiment, please refer to the following: Figure 3 and Figure 5The core structure 200 has 12 mounting slots 201, which are divided into 6 slot groups. In the plane perpendicular to the central axis 100, the cross-section of the core structure 200 can be evenly divided into 6 regions, each region occupying a radius of 60°. Correspondingly, one slot group is formed in each region, that is, two mounting slots 201 are formed in each region. Further, each region is divided into two half-regions, each half-region occupying a radius of 30°, and each half-region has one mounting slot 201. Additionally, using the diameter corresponding to the center position of the two half-regions (indicated by line B in the diagram) as a reference, the width direction of each mounting slot 201 (indicated by line C in the diagram) forms an angle of approximately 72.5° with this diameter, and the two mounting slots 201 are symmetrically arranged with respect to this diameter. This completes the arrangement of the 12 mounting slots 201. It should be understood that in other embodiments of this application, the number and arrangement of the mounting slots 201 can be adjusted according to actual installation needs, and this disclosure does not impose any restrictions.

[0042] Furthermore, the extension direction of the groove 301 is set at an angle to the width direction of the mounting groove 201, and the extension path of the groove 301 intersects the extension path of the mounting groove 201 in the width direction, thereby achieving the purpose of partially aligning the groove 301 with the mounting groove 201. Based on this, the groove 301 can correspond to the pressure plate that seals the mounting groove 201, so as to facilitate the installation of the first pressure plate 310 assembly 300 by accommodating the pressure plate through the groove 301.

[0043] In this embodiment, please refer to the following: Figures 1 to 3 The first pressure plate 310 assembly 300 has multiple receiving slots 303 on the side near the iron core structure 200. Each receiving slot 303 corresponds to a different mounting slot 201, and each groove 301 corresponds to a different receiving slot 303; the grooves 301 are connected to their corresponding receiving slots 303. The permanent magnet motor rotor structure 10 also includes multiple insulating pads, each corresponding to a different receiving slot 303, and the insulating pads are housed within their respective receiving slots 303. After the pressure plate is removed from the opening 302 of the groove 301, the insulating pads can support the permanent magnet 210, ensuring the stability of the permanent magnet 210 during installation. Since the receiving slots 303 and mounting slots 201 are directly opposite and connected, the insulating pads can fully contact and support the permanent magnet 210, ensuring effective support. It is worth noting that during the reinforcement process of the first pressure plate 310 assembly 300, the pressure plate will cause the insulating pad to undergo some elastic deformation. After the pressure plate is pulled out, the insulating pad rebounds to fully support the permanent magnet 210.

[0044] Furthermore, in the thickness direction of the first pressure plate 310 assembly 300, the depth of the groove 301 is less than the depth of the receiving groove 303. Based on this, when the insulating pad and the permanent magnet 210 press the pressing sheet, the insulating pad produces a small elastic deformation, which facilitates the pressing sheet from being pulled out of the groove 301 and also avoids damage to the insulating pad.

[0045] In this embodiment, the first pressure plate 310 assembly 300 includes a first pressure plate 310 and a first heat sink 320. The first pressure plate 310 is attached to the iron core structure 200, and the first heat sink 320 is disposed on the side of the first pressure plate 310 away from the iron core structure 200. A groove 301 and a receiving slot 303 are both formed on the first pressure plate 310, and the receiving slot 303 penetrates the first pressure plate 310 along its thickness direction. The first heat sink 320 covers the receiving slot 303. The side of the insulating pad away from the permanent magnet 210 abuts against the first heat sink 320, thereby sealing the receiving slot 303 through the first heat sink 320.

[0046] Furthermore, the core structure 200 is provided with multiple heat dissipation channels 220, all of which penetrate the core structure 200 along the axial direction of the central axis 100 and are arranged around the central axis 100. The first pressure plate 310 has multiple first heat dissipation holes 311 corresponding one-to-one with the multiple heat dissipation channels 220; the first heat dissipation plate 320 is annular, and the multiple heat dissipation channels 220 correspond to the internal cavities of the first heat dissipation plate 320. Based on this, the heat dissipation channels 220 can be exposed, facilitating heat dissipation of the core structure 200.

[0047] In addition, multiple blades 330 are integrated on the side of the first heat sink 320 away from the first pressure plate 310, and these blades 330 are arranged at intervals along a ring path. During the overall rotation of the permanent magnet motor rotor structure 10, the first heat sink 320 rotates accordingly, and the rotation of the multiple blades 330 generates airflow, improving the heat dissipation effect of the permanent magnet motor rotor structure 10. Integrating the blades 330 onto the first heat sink 320 allows for the integration of the pressure plate structure and the heat dissipation structure, reducing the number of parts and simplifying the structure of the permanent magnet motor rotor structure 10. This ensures effective heat dissipation while improving assembly efficiency.

[0048] In this embodiment, the second pressure plate 410 assembly 400 includes a second pressure plate 410 and a second heat sink 420; the second pressure plate 410 is attached to the iron core structure 200, and the second heat sink 420 is disposed on the side of the second pressure plate 410 away from the iron core structure 200; the second pressure plate 410 covers the mounting groove 201; multiple blades 330 are integrated on the side of the second heat sink 420 away from the second pressure plate 410. The second heat sink 420 adopts the same arrangement as the first heat sink 320, which can further reduce the number of parts and simplify the structure of the permanent magnet motor rotor structure 10, thereby further improving assembly efficiency.

[0049] It is worth noting that since the first heat sink 320 and the second heat sink 420 rotate synchronously, considering the airflow direction during heat dissipation, the integrated angle of the blades 330 on the first heat sink 320 and the second heat sink 420 can be adjusted according to actual needs to adjust the airflow direction, which can facilitate the improvement of heat dissipation effect.

[0050] In addition, the second pressure plate 410 has multiple second heat dissipation holes 411, which correspond one-to-one with the multiple heat dissipation channels 220 on the iron core structure 200; the second heat dissipation plate 420 is annular, and the multiple second heat dissipation holes 411 correspond to the internal cavity of the second heat dissipation plate 420. Based on this, the heat dissipation channels 220 can be exposed, which facilitates the improvement of the heat dissipation effect of the permanent magnet motor rotor structure 10.

[0051] In this embodiment, the permanent magnet motor rotor structure 10 further includes multiple connecting rods 500 and multiple connecting pieces 510; the connecting rods 500 sequentially pass through the first pressure plate 310 assembly 300, the iron core structure 200, and the second pressure plate 410 assembly 400; both ends of the connecting rods 500 are detachably connected to the connecting pieces 510 to fix the first pressure plate 310 assembly 300, the iron core structure 200, and the second pressure plate 410 assembly 400; the multiple connecting rods 500 are arranged around the central axis 100.

[0052] Optionally, the connecting rod 500 can be a threaded rod, and the connecting piece 510 can be a nut, which provides high connection stability and is easy to assemble and disassemble. The first pressure plate 310 assembly 300 and the second pressure plate 410 assembly 400 can be reinforced by tightening the nut, while simultaneously clamping the iron core structure 200, thereby sealing the permanent magnet 210.

[0053] In summary, in the permanent magnet motor rotor structure 10 and the permanent magnet motor provided in this disclosure, when assembling the permanent magnet motor rotor structure 10, a pressure plate can be used to first seal the permanent magnet 210 in the mounting groove 201 to prevent the permanent magnet 210 from being improperly installed due to the mutual repulsion between them. After the permanent magnet 210 is installed in place, the first pressure plate 310 assembly 300 is then assembled to the end of the iron core structure 200 to cover the mounting groove 201, thus completing the sealing of the permanent magnet 210. At this time, the pressure plate corresponds to the position of the groove 301, which allows the first pressure plate 310 assembly 300 to stably seal the permanent magnet 210, ensuring that the permanent magnet 210 is installed in place. Finally, the pressure plate can be pulled out from the opening 302 of the groove 301. Based on this, the permanent magnet motor rotor structure 10 can achieve the sealing of the permanent magnet 210 by using a pressure plate through the groove 301 on the first pressure plate 310 assembly 300, facilitating the installation of the permanent magnet 210. After the permanent magnet 210 and the first pressure plate 310 assembly 300 are installed, the pressure plate can be pulled out from the opening 302 of the groove 301, easily completing the installation of the permanent magnet 210 and reducing the assembly difficulty of the permanent magnet motor rotor structure 10. When it is necessary to disassemble the permanent magnet motor rotor structure 10, it is only necessary to remove the first pressure plate 310 assembly 300 and the second pressure plate 410 assembly 400 from both ends of the iron core structure 200 to complete the disassembly of the permanent magnet motor rotor structure 10, which also reduces the disassembly difficulty of the permanent magnet motor rotor structure 10. Therefore, the permanent magnet motor rotor structure 10 provided by this utility model can improve the technical problem of high difficulty in disassembling and assembling the rotor of the permanent magnet motor in the prior art. Integrating blades 330 on the first heat sink 320 and the second heat sink 420 can reduce the number of parts, simplify the permanent magnet motor rotor structure 10, and improve assembly efficiency. On the other hand, it can also improve the heat dissipation effect of the permanent magnet motor rotor structure 10.

[0054] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A permanent magnet motor rotor structure (10), characterized in that, include: Central axis (100); A core structure (200) is sleeved on the central shaft (100); along the axial direction of the central shaft (100), the core structure (200) has a plurality of mounting slots (201), which are arranged around the central shaft (100); a permanent magnet (210) is provided in each of the plurality of mounting slots (201). A first pressure plate (310) assembly (300) is disposed at one end of the iron core structure (200) and covers the mounting groove (201); the first pressure plate (310) assembly (300) has a plurality of grooves (301) on the side near the iron core structure (200), the plurality of grooves (301) correspond one-to-one with the plurality of mounting grooves (201), and some of the grooves (301) are directly opposite the corresponding mounting grooves (201); in the radial direction of the central axis (100), the grooves (301) form openings (302) on the outside of the first pressure plate (310) assembly (300). The second pressure plate (410) assembly (400) is located at the other end of the iron core structure (200) and covers the mounting groove (201).

2. The permanent magnet motor rotor structure (10) according to claim 1, characterized in that, The first pressure plate (310) assembly (300) is provided with a plurality of receiving grooves (303) on the side near the iron core structure (200). The plurality of receiving grooves (303) correspond one-to-one with the plurality of mounting grooves (201), and the plurality of grooves (301) correspond one-to-one with the plurality of receiving grooves (303). The grooves (301) are connected to the corresponding receiving grooves (303). The permanent magnet motor rotor structure (10) also includes a plurality of insulating pads. The plurality of insulating pads correspond one-to-one with the plurality of receiving grooves (303), and the insulating pads are accommodated inside the corresponding receiving grooves (303).

3. The permanent magnet motor rotor structure (10) according to claim 2, characterized in that, In the thickness direction of the first pressure plate (310) assembly (300), the depth of the groove (301) is less than the depth of the receiving groove (303).

4. The permanent magnet motor rotor structure (10) according to claim 2, characterized in that, The first pressure plate (310) assembly (300) includes a first pressure plate (310) and a first heat sink (320); the first pressure plate (310) is attached to the iron core structure (200), and the first heat sink (320) is located on the side of the first pressure plate (310) away from the iron core structure (200); the groove (301) and the receiving groove (303) are both formed on the first pressure plate (310), and the receiving groove (303) penetrates the first pressure plate (310) along the thickness direction of the first pressure plate (310), and the first heat sink (320) covers the receiving groove (303).

5. The permanent magnet motor rotor structure (10) according to claim 4, characterized in that, The core structure (200) is also provided with a plurality of heat dissipation channels (220), and the plurality of heat dissipation channels (220) all penetrate the core structure (200) along the axial direction of the central axis (100), and the plurality of heat dissipation channels (220) are arranged around the central axis (100); The first pressure plate (310) has a plurality of first heat dissipation holes (311) that correspond one-to-one with the plurality of heat dissipation channels (220); the first heat dissipation plate (320) is annular, and the plurality of heat dissipation channels (220) correspond to the internal cavity of the first heat dissipation plate (320).

6. The permanent magnet motor rotor structure (10) according to claim 4, characterized in that, The first heat sink (320) has multiple blades (330) integrated on the side away from the first pressure plate (310), and the multiple blades (330) are arranged at intervals along an annular path.

7. The permanent magnet motor rotor structure (10) according to claim 1, characterized in that, The second pressure plate (410) assembly (400) includes a second pressure plate (410) and a second heat sink (420); the second pressure plate (410) is attached to the iron core structure (200), and the second heat sink (420) is located on the side of the second pressure plate (410) away from the iron core structure (200); the second pressure plate (410) covers the mounting groove (201); a plurality of blades (330) are integrated on the side of the second heat sink (420) away from the second pressure plate (410).

8. The permanent magnet motor rotor structure (10) according to claim 7, characterized in that, The second pressure plate (410) has a plurality of second heat dissipation holes (411), and the plurality of second heat dissipation holes (411) correspond one-to-one with the plurality of heat dissipation channels (220) on the iron core structure (200); the second heat dissipation plate (420) is annular, and the plurality of second heat dissipation holes (411) correspond to the internal cavity of the second heat dissipation plate (420).

9. The permanent magnet motor rotor structure (10) according to claim 1, characterized in that, The permanent magnet motor rotor structure (10) further includes multiple connecting rods (500) and multiple connecting pieces (510); the connecting rods (500) pass through the first pressure plate (310) assembly (300), the iron core structure (200) and the second pressure plate (410) assembly (400) in sequence; both ends of the connecting rods (500) are detachably connected to the connecting pieces (510) to fix the first pressure plate (310) assembly (300), the iron core structure (200) and the second pressure plate (410) assembly (400); the multiple connecting rods (500) are arranged around the central axis (100).

10. A permanent magnet motor, characterized in that, Includes a pressure plate and a permanent magnet motor rotor structure (10) as described in any one of claims 1-9; the pressure plate is used to fit against the core structure (200) to seal the permanent magnet (210), and the pressure plate can be pulled out of the groove (301) from the opening (302).

Images