Motor, suspension system, and vehicle

Abstract

A motor, a suspension system, and a vehicle. The motor comprises a rotor assembly, a stator assembly, and an isolation member. The stator assembly and the rotor assembly are coupled to each other, so that the rotor assembly can reciprocally rotate. The isolation member is provided between the rotor assembly and the stator assembly. The isolation member is connected to a first component, and the first component is one of the rotor assembly and the stator assembly. A first limiting structure is provided between the isolation member and the first component. The first limiting structure is configured to restrict radial displacement of the isolation member.

Description

Electric machine, suspension system and vehicle

[0001] This application claims priority to Chinese Patent Application No. 202410840230.2, filed on June 25, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of vehicle parts, in particular to an electric machine, a suspension system and a vehicle. BACKGROUND

[0003] In the design and operation of electric machines, the heat dissipation and lubrication of the rotor are one of the key factors to ensure the efficient and stable operation of the electric machine. During the operation of the electric machine, a large amount of heat is generated due to the passage of current and mechanical movement.

[0004] SUMMARY

[0005] The present disclosure aims to at least solve one of the technical problems existing in the related art. To this end, the first object of the present disclosure is to provide an electric machine that can effectively fix the isolation member, so as to avoid the displacement of the isolation member relative to the stator assembly when the rotor assembly is in operation to a certain extent, thereby avoiding the rupture of the isolation sleeve by the rotor assembly, prolonging the service life of the isolation member, and also ensuring the working performance of the isolation member, solving the technical problem that the isolation sleeve is easily displaced towards the rotor during the operation of the electric machine in the related art.

[0006] Some embodiments of the present disclosure provide a suspension system having the above-mentioned electric machine.

[0007] Some embodiments of the present disclosure provide a vehicle having the above-mentioned suspension system.

[0008] The electric machine according to some embodiments of the present disclosure comprises a rotor assembly, a stator assembly and an isolation member. The stator assembly and the rotor assembly are coupled to each other so that the rotor assembly can reciprocate. The isolation member is arranged between the rotor assembly and the stator assembly. The isolation member is connected to a first component, which is one of the rotor assembly and the stator assembly. At least one first limiting structure is arranged between the isolation member and the first component, and is configured to limit the displacement of the isolation member in the radial direction.

[0009] The electric machine according to some embodiments of the present disclosure can make the position of the isolation member stable relative to the first component by limiting the displacement of the isolation member in the radial direction by the first limiting structure, so as to avoid the rupture of the isolation member by the rotor assembly to a certain extent when the rotor assembly is in operation, prolong the service life of the isolation member, and also ensure the working performance of the isolation member.

[0010] In some embodiments, any one of the at least one first limiting structure comprises a first limiting portion arranged on the spacer, and a second limiting portion arranged on the first component, the first limiting portion and the second limiting portion being matched.

[0011] In some embodiments, the first limiting portion has a first limiting surface and a second limiting surface, the first limiting surface and the second limiting surface being arranged at a radial interval along the spacer, and the second limiting portion is matched with the first limiting surface and the second limiting surface.

[0012] In some embodiments, the first limiting structure is further configured to limit the displacement of the spacer in the circumferential direction.

[0013] In some embodiments, the first limiting portion has a first limiting surface, a second limiting surface, and a third limiting surface, the first limiting surface and the second limiting surface being arranged at a radial interval along the spacer, the third limiting surface being connected between the first limiting surface and the second limiting surface, and the first limiting surface, the second limiting surface, and the third limiting surface are matched with the second limiting portion.

[0014] In some embodiments, the at least one first limiting structure comprises a plurality of first limiting structures, and the plurality of first limiting structures comprises two first limiting portions, the two first limiting portions being connected and symmetrically arranged.

[0015] In some embodiments, the two first limiting portions are integrally arranged.

[0016] In some embodiments, the first limiting surface of the first limiting portion is configured as an outer surface or an inner surface of the spacer.

[0017] In some embodiments, the first limiting portion has a first limiting surface and a second limiting surface, and the distance from the first limiting surface to the second limiting surface is different along the circumferential direction of the spacer.

[0018] In some embodiments, along the circumferential direction of the spacer, from the circumferential outer side of the first limiting structure to the circumferential center of the first limiting structure, the distance from the first limiting surface to the second limiting surface decreases.

[0019] In some embodiments, along the radial direction of the spacer, the second limiting surface is farther away from the spacer than the first limiting surface, and the distance from the side wall of the spacer farther away from the first limiting portion to the side of the second limiting surface closer to the first limiting surface is a first distance H2, the first distance H2 being greater than or equal to the radial thickness H1 of the spacer.

[0020] In some embodiments, H2 = (1-1.5)H1.

[0021] In some embodiments, along the radial direction of the isolation piece, the second limiting surface is farther away from the isolation piece than the first limiting surface, and the distance between the side of the second limiting surface close to the first limiting surface and the side of the first limiting surface away from the second limiting surface is a second distance H3, where H3=(1-2)H1.

[0022] In some embodiments, the radial thickness H1 of the isolation piece is 0.4-1.0 mm.

[0023] In some embodiments, the first limiting surface and the second limiting surface of the first limiting portion satisfy at least one of the following: the first limiting surface comprises one of a curved surface and a flat surface; or the second limiting surface comprises one of a curved surface and a flat surface.

[0024] In some embodiments, the first limiting portion has a third limiting surface, and the third limiting surface comprises one of a curved surface and a flat surface.

[0025] In some embodiments, at least one second limiting structure is arranged between the isolation piece and the first component.

[0026] In some embodiments, any one of the at least one second limiting structure comprises a third limiting portion formed on the isolation piece and a fourth limiting portion formed on the first component, and the fourth limiting portion cooperates with the third limiting portion.

[0027] In some embodiments, one of the third limiting portion and the fourth limiting portion is a protrusion, and the other of the third limiting portion and the fourth limiting portion is a groove.

[0028] In some embodiments, the protrusion is an arc-shaped protrusion, and the groove is an arc-shaped groove.

[0029] In some embodiments, the third limiting portion is integrally arranged with the isolation piece.

[0030] In some embodiments, along the radial direction of the isolation piece, the protrusion has a protrusion height H4, and the H4 is greater than or equal to the radial thickness H1 of the isolation piece.

[0031] In some embodiments, H4=(1-2)H1.

[0032] In some embodiments, the at least one second limiting structure comprises a plurality of second limiting structures, and the first limiting structure comprises a plurality of first limiting structures, and the plurality of first limiting structures and the plurality of second limiting structures are arranged at intervals along the circumferential direction of the isolation piece.

[0033] In some embodiments, the first component is a stator assembly, the stator assembly includes a stator yoke and a plurality of stator teeth, the plurality of stator teeth are arranged along a circumferential direction of the stator yoke, a first limiting groove is formed between two adjacent stator teeth of the plurality of stator teeth, at least part of the first limiting groove is formed as the second limiting portion, the first limiting portion is arranged in the first limiting groove, and the stator tooth is matched with the first limiting portion.

[0034] In some embodiments, the isolation piece is a plastic piece.

[0035] The suspension system according to some embodiments of the present disclosure includes the motor mentioned above.

[0036] The suspension system according to some embodiments of the present disclosure can ensure the working performance of the suspension system by using the motor mentioned above.

[0037] The vehicle according to some embodiments of the present disclosure includes the suspension system mentioned above.

[0038] The vehicle according to some embodiments of the present disclosure can ensure the working performance of the vehicle by using the suspension system mentioned above, thereby improving the driving experience.

[0039] Additional aspects and advantages of the present disclosure will become apparent from the following description, or will be learned by practice of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0040] The aspects and advantages of at least one of the foregoing or additional aspects and advantages of the present disclosure will become apparent from the following description in conjunction with the accompanying drawings.

[0041] FIG. 1 is a cross-sectional view of a motor according to some embodiments of the present disclosure.

[0042] FIG. 2 is a front view of the motor in FIG. 1.

[0043] FIG. 3 is a partial enlarged view of circle I in FIG. 2.

[0044] FIG. 4 is a partial enlarged view of a stator core provided with a first limiting groove according to some embodiments of the present disclosure.

[0045] FIG. 5 is a partial enlarged view of a stator core and an isolation piece matched by a first limiting structure according to some embodiments of the present disclosure.

[0046] FIG. 6 is an enlarged view of part of the structure in FIG. 5.

[0047] FIG. 7 is an enlarged view of part of the structure in FIG. 6.

[0048] FIG. 8 is a partial enlarged view of a stator core provided with a fourth limiting portion according to some embodiments of the present disclosure.

[0049] Fig. 9 is a partial enlarged view of the stator core and the isolation piece cooperating through the second limiting structure according to some embodiments of the present disclosure.

[0050] Fig. 10 is a partial enlarged view of a cross-section of a motor according to other embodiments of the present disclosure.

[0051] Fig. 11 is a partial enlarged view of circle II in Fig. 10.

[0052] Fig. 12 is a partial enlarged view of a cross-section of a motor according to yet other embodiments of the present disclosure.

[0053] Fig. 13 is a partial enlarged view of circle III in Fig. 12.

[0054] Fig. 14 is a cross-sectional view of a mover assembly according to some embodiments of the present disclosure.

[0055] Fig. 15 is a block diagram of a suspension system according to some embodiments of the present disclosure.

[0056] Fig. 16 is a block diagram of a vehicle according to some embodiments of the present disclosure.

[0057] Reference signs:

[0058] 1000, motor; 100, mover assembly; 110, mover core; 111, limiting tooth; 120, permanent magnet; 130, rotating shaft; 150, weight-reducing hole; 200, stator assembly; 210, second limiting part; 220, stator core; 221, stator yoke part; 222, stator tooth part; 223, stator shoe part; 230, stator winding; 240, first limiting slot; 250, insulation framework; 300, isolation piece; 310, first limiting structure; 314, first limiting part; 311, first limiting surface; 312, second limiting surface; 313, third limiting surface; 400, second limiting structure; 330, third limiting part; 224, fourth limiting part; 340, first circular arc segment; 350, second circular arc segment; 2000, suspension system; 3000, vehicle. DETAILED DESCRIPTION

[0059] Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings, examples of which are shown in the drawings, wherein the same or similar notations are used to denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure, and cannot be understood as a limitation of the present disclosure.

[0060] In the description of the present disclosure, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0061] In the motor of the related art, in order to facilitate heat dissipation of the rotor and lubrication of the rotor shaft bearing, an isolation sleeve is usually arranged on the outer periphery of the rotor, and lubricating oil is filled in the isolation sleeve to achieve the above functions.

[0062] However, during the operation of the motor, the isolation sleeve has the risk of being cut by the high-speed rotating rotor, which affects the service life and working performance of the isolation sleeve.

[0063] To solve the above problems, some embodiments of the present disclosure provide a motor 1000.

[0064] The motor 1000 of some embodiments of the present disclosure will be described below with reference to the accompanying drawings of the specification.

[0065] As shown in FIGS. 1, 2 and 3, a motor 1000 according to some embodiments of the present disclosure includes a rotor assembly 100, a stator assembly 200 and an isolation member 300. The stator assembly 200 and the rotor assembly 100 are coupled to each other so that the rotor assembly 100 can reciprocate.

[0066] It should be noted that the coupling of the stator assembly 200 and the rotor assembly 100 means that the stator assembly 200 and the rotor assembly 100 can interact with each other to affect each other, so as to control the reciprocation of the rotor assembly 100, thereby reducing the control difficulty of the rotor assembly 100 and ensuring the working performance of the motor 1000.

[0067] In some embodiments, as shown in FIGS. 1 and 2, one of the stator assembly 200 and the rotor assembly 100 is provided with a permanent magnet 120, and the other of the stator assembly 200 and the rotor assembly 100 is provided with a stator winding 230. The permanent magnet 120 and the stator winding 230 cooperate to form a magnetic coupling between the stator assembly 200 and the rotor assembly 100. In this way, the stator assembly 200 and the rotor assembly 100 can be connected by a magnetic field, so as to facilitate the reciprocation of the rotor assembly 100, reduce the rotation difficulty of the rotor assembly 100, and be conducive to ensuring the working performance of the motor 1000.

[0068] In some examples, the stator winding 230 is formed as a circuit part of the motor 1000, and the stator winding 230 is connected to three-phase alternating current to generate a rotating magnetic field, so as to realize reciprocating rotation of the mover assembly 100, so as to ensure the working performance of the motor 1000.

[0069] As shown in FIGS. 1, 2 and 3, the isolating piece 300 is arranged between the mover assembly 100 and the stator assembly 200, the isolating piece 300 is connected with the first component, the first component is one of the mover assembly 100 and the stator assembly 200, and the first limiting structure 310 is arranged between the isolating piece 300 and the first component, and the first limiting structure 310 is configured to limit the displacement of the isolating piece 300 in the radial direction. That is, the isolating piece 300 is connected with one of the mover assembly 100 and the stator assembly 200, and during the connection of the isolating piece 300 with one of the mover assembly 100 and the stator assembly 200, the first limiting structure 310 is arranged between the isolating piece 300 and one of the mover assembly 100 and the stator assembly 200, and the first limiting structure 310 is configured to limit the displacement of the isolating piece 300 in the radial direction, so as to avoid the radial displacement of the isolating piece 300 with one of the mover assembly 100 and the stator assembly 200 to a certain extent, improve the stability of the position of the isolating piece 300, and reduce the difficulty of fixing the isolating piece 300.

[0070] In some embodiments, when the isolating piece 300 is connected with one of the mover assembly 100 and the stator assembly 200 through the first limiting structure 310, the isolating piece 300 is rotationally connected with the other one of the mover assembly 100 and the stator assembly 200, so as to avoid the isolating piece 300 from hindering the relative rotation of the stator assembly 200 and the mover assembly 100 to a certain extent while realizing the fixed connection of the isolating piece 300 between the mover assembly 100 and the stator assembly 200 and the stability of the position of the isolating piece 300 relative to the mover assembly 100 and the stator assembly 200, so as to ensure the working performance of the motor 1000.

[0071] In some embodiments, the isolating piece 300 is connected with the mover assembly 100 through the first limiting structure 310.

[0072] In other embodiments, as shown in FIGS. 1, 2 and 3, the isolating piece 300 is connected with the stator assembly 200 through the first limiting structure 310.

[0073] It should be noted that in some embodiments, when the isolation piece 300 is arranged between the mover assembly 100 and the stator assembly 200, the isolation piece 300 can be arranged to surround the outer periphery of the mover assembly 100, and the lubricating oil can be filled in the isolation piece 300, so as to fill the lubricating oil in the outer periphery of the mover assembly 100. In this way, the lubricating oil can be filled in the gap of the mover assembly 100, so as to immerse the mover assembly 100 in the lubricating oil. In this way, on the one hand, the lubricating oil can be filled in the rotating bearing of the rotating shaft 130 of the mover assembly 100, so as to ensure the working performance of the rotating bearing, and further ensure that the mover assembly 100 can effectively rotate relative to the stator assembly 200, so as to ensure the working performance of the motor 1000. On the other hand, the lubricating oil can also be used to cool the mover assembly 100, especially the permanent magnet 120 on the mover assembly 100, so as to avoid demagnetization of the permanent magnet 120 caused by high temperature to a certain extent, so as to ensure the working performance of the permanent magnet 120.

[0074] In addition, by surrounding the isolation piece 300 around the outer periphery of the mover assembly 100, on the one hand, the isolation piece 300 can be used to protect the mover assembly 100, so as to prolong the service life of the mover assembly 100. On the other hand, the isolation piece 300 can also be used to seal the mover assembly 100, so as to facilitate filling the lubricating oil towards the mover assembly 100.

[0075] That is to say, by arranging the isolation piece 300 around the outer periphery of the mover assembly 100, the mover assembly 100 can be protected, and at the same time, the mover assembly 100 can be immersed in the lubricating oil, so as to facilitate lubrication and cooling of the mover assembly 100, ensure the working performance of the mover assembly 100, and prolong the service life of the mover assembly 100.

[0076] In summary, the working performance of the isolation piece 300 directly affects the performance of the mover assembly 100.

[0077] Based on this, the motor 1000 in some embodiments of the present disclosure, by setting the first limiting structure 310 between the isolation piece 300 and the first component, and limiting the displacement of the isolation piece 300 in the radial direction by using the first limiting structure 310, the position of the isolation piece 300 relative to the first component is stable, on the one hand, it plays a role in circumferential positioning of the isolation piece 300, to a certain extent, it ensures that the oil liquid driven by the rotor assembly 100 during operation will not push the isolation piece 300 to rotate synchronously, on the other hand, to a certain extent, it avoids the radial displacement of the isolation piece 300 relative to the first component when the isolation piece 300 is subjected to radial inward or radial outward pressure, so that, during the operation of the motor 1000, the trend of the isolation piece 300 expanding in the radial direction of the motor 1000 due to thermal expansion can be avoided to a certain extent, thereby avoiding the isolation piece 300 from separating from the first component to a certain extent, and also avoiding the isolation piece 300 being cut by the high-speed rotating rotor assembly 100, prolonging the service life of the isolation piece 300, and ensuring the working performance of the isolation piece 300, thereby avoiding the leakage of the lubricating oil filled in the isolation piece 300, thereby ensuring the working performance of the rotor assembly 100 to a certain extent, that is, to a certain extent, ensuring the working performance of the motor 1000.

[0078] From the above structure, the motor 1000 of some embodiments of the present disclosure, by setting the isolation piece 300 and setting the isolation piece 300 between the rotor assembly 100 and the stator assembly 200, it is convenient to protect the rotor assembly 100 by using the isolation piece 300, and it is also convenient to soak the rotor assembly 100 in the lubricating oil, lubricate the rotor assembly 100 with the lubricating oil, and cool the rotor assembly 100, thereby ensuring the working performance of the rotor assembly 100 and prolonging the service life of the rotor assembly 100.

[0079] In addition, by setting the first limiting structure 310 between the isolation piece 300 and the first component, and limiting the displacement of the isolation piece 300 in the radial direction by using the first limiting structure 310, the isolation piece 300 can be supported by the first component, which reduces the difficulty of fixing the isolation piece 300, and improves the position stability of the isolation piece 300, thereby ensuring the working performance of the isolation piece 300.

[0080] In addition, the first limiting structure 310 can also avoid the radial displacement of the isolation piece 300 relative to the first component to a certain extent, further improve the position stability of the isolation piece 300, so as to avoid the trend of the radial expansion displacement of the isolation piece 300 due to thermal expansion along the motor 1000 to a certain extent, and further avoid the isolation piece 300 being cut by the mover assembly 100 running at high speed to a certain extent, prolong the service life of the isolation piece 300, and ensure the working performance of the isolation piece 300, so that the lubricating oil in the isolation piece 300 can be prevented from leaking to a certain extent, thereby ensuring the working performance of the mover assembly 100 to a certain extent.

[0081] It can be understood that, compared with the related art, the motor in some embodiments of the present disclosure can limit the radial displacement of the isolation piece 300 when fixing the isolation piece 300, thereby avoiding the trend of the radial expansion displacement of the isolation piece 300 due to thermal expansion along the motor 1000 to the greatest extent, further avoiding the isolation piece 300 being cut by the mover assembly 100 running at high speed to a certain extent, prolonging the service life of the isolation piece 300, and ensuring the working performance of the isolation piece 300, ensuring that the mover assembly 100 can be immersed in the lubricating oil, ensuring the lubrication and heat dissipation effect of the mover assembly 100, and further ensuring the working performance of the motor 1000.

[0082] In some embodiments, as shown in FIGS. 1, 2 and 3, the isolation piece 300 is arranged around the outer periphery of the mover assembly 100 and between the mover assembly 100 and the stator assembly 200, the first component is the stator assembly 200, and the first limiting structure 310 for limiting the radial displacement of the isolation piece 300 is arranged between the isolation piece 300 and the stator assembly 200, so as to realize the limiting cooperation between the isolation piece 300 and the stator assembly 200, and further facilitate supporting the isolation piece 300 by the stator assembly 200, thereby reducing the difficulty of fixing the isolation piece 300 and further improving the position stability of the isolation piece 300 to ensure the working performance of the isolation piece 300.

[0083] In some embodiments, as shown in FIGS. 3, 4 and 5, the first limiting structure 310 includes a first limiting portion 314, the first limiting portion 314 is arranged on the isolation piece 300, the first component is provided with a second limiting portion 210, and the first limiting portion 314 cooperates with the second limiting portion 210. In this way, the limiting cooperation between the isolation piece 300 and the first component can be realized, and further facilitating supporting the isolation piece 300 by the first component can reduce the difficulty of fixing the isolation piece 300, and further improve the position stability of the isolation piece 300, thereby ensuring the working performance of the isolation piece 300.

[0084] In some embodiments, as shown in FIGS. 3, 4 and 5, the first limiting structure 310 is arranged on the side of the isolation piece 300 facing the first component, and the second limiting portion 210 is arranged on the side of the first component facing the isolation piece 300. In this way, when the isolation piece 300 is arranged between the mover assembly 100 and the stator assembly 200, the limiting cooperation between the first limiting portion 314 and the second limiting portion 210, that is, the limiting cooperation between the isolation piece 300 and the first component, can be facilitated, and the isolation piece 300 can be supported by the first component, the stability of the position of the isolation piece 300 is improved, and the working performance of the isolation piece 300 is ensured.

[0085] In addition, by arranging the first limiting structure 310 on the isolation piece 300 and arranging the second limiting portion 210 on the first component, the forming difficulty of the first limiting structure 310 and the second limiting portion 210 can be reduced, and thus the limiting cooperation difficulty of the isolation piece 300 and the first component, that is, the fixing difficulty of the isolation piece 300, can be reduced.

[0086] Of course, in some other embodiments, the first limiting structure 310 can be arranged on the first component, and the second limiting portion 210 can be arranged on the isolation piece 300, and the limiting cooperation between the isolation piece 300 and the first component can also be achieved by the cooperation between the first limiting structure 310 and the second limiting portion 210.

[0087] In some embodiments, as shown in FIGS. 5, 6 and 7, the first limiting portion 314 has a first limiting surface 311 and a second limiting surface 312, the first limiting surface 311 and the second limiting surface 312 are arranged at intervals in the radial direction of the isolation piece 300, and the second limiting portion 210 cooperates with the first limiting surface 311 and the second limiting surface 312. In this way, the limiting cooperation between the first limiting portion 314 and the second limiting portion 210 in the radial direction can be achieved, and thus the displacement of the isolation piece 300 in the radial direction can be limited by the first limiting structure 310, that is, the radial deviation of the isolation piece 300 from one of the mover assembly 100 and the stator assembly 200 can be avoided to some extent, the stability of the position of the isolation piece 300 is improved, and the fixing difficulty of the isolation piece 300 is reduced.

[0088] In some embodiments, as shown in FIGS. 5, 6 and 7, the first limiting portion 314 is a limiting recess with an opening, in the radial direction of the isolation piece 300, the two side walls of the communication opening of the limiting recess are formed as the first limiting surface 311 and the second limiting surface 312 of the first limiting portion 314, so that the first limiting surface 311 and the second limiting surface 312 are arranged at intervals in the radial direction of the isolation piece 300. In this way, when at least part of the structure of the second limiting portion 210 is limited in the limiting recess through the opening, the limiting cooperation between the first limiting portion 314 and the second limiting portion 210 in the radial direction can be achieved, and the cooperation difficulty between the first limiting portion 314 and the second limiting portion 210 is reduced.

[0089] In some embodiments, the first limiting structure 310 is also used to limit the displacement of the isolation piece 300 in the circumferential direction. That is, the first limiting structure 310 can limit the radial displacement and the circumferential displacement of the isolation piece 300 at the same time, so as to maximize the position stability of the isolation piece 300, and further improve the working performance of the isolation piece 300.

[0090] In some embodiments, as shown in FIGS. 5, 6 and 7, the first limiting part 314 has a first limiting surface 311, a second limiting surface 312 and a third limiting surface 313, the first limiting surface 311 and the second limiting surface 312 are arranged in the radial direction of the isolation piece 300, and the third limiting surface 313 is connected between the first limiting surface 311 and the second limiting surface 312. The first limiting surface 311, the second limiting surface 312 and the third limiting surface 313 are matched with the second limiting part 210. In this way, the displacement of the isolation piece 300 in the circumferential direction can be limited by the first limiting structure 310, so as to improve the position stability of the isolation piece 300.

[0091] In some embodiments, the connection between the third limiting surface 313 and the first limiting surface 311 and the second limiting surface 312 is provided with a circular chamfer, and the radius R1 of the circular chamfer is in the range of 0.2mm-2.0mm. In this way, the stress concentration at the connection between the third limiting surface 313 and the first limiting surface 311 and the second limiting surface 312 can be avoided to some extent, so as to avoid the fracture of the first limiting structure 310 to some extent, prolong the service life of the first limiting structure 310, and ensure the working performance of the first limiting structure 310.

[0092] For example, the radius R1 of the circular chamfer is 0.2mm, 0.5mm, 1mm, 1.5mm or 2mm, etc.

[0093] In some embodiments, as shown in FIGS. 5, 6 and 7, the motor 1000 includes two first limiting parts 314, and the two first limiting parts 314 are connected and symmetrically arranged. The cooperation of the two first limiting parts 314 can increase the connection strength of the first limiting part 314 and the second limiting part 210, so that the relative position of the first limiting part 314 and the second limiting part 210 is stable, thereby facilitating the limitation of the displacement of the isolation piece 300 in the circumferential direction and the radial direction by the first limiting structure 310, and improving the position stability of the isolation piece 300.

[0094] In some embodiments, the two first limiting parts 314 are integrally arranged (e.g., as an integral piece). In this way, the forming difficulty of the first limiting part 314 can be reduced, and the structural strength of the first limiting structure 310 can be improved, thereby facilitating the limitation of the displacement of the isolation piece 300 in the circumferential direction and the radial direction by the first limiting structure 310, and improving the position stability of the isolation piece 300.

[0095] Of course, in other embodiments, the two first limiting portions 314 can also be separate parts, and can be fixedly connected by welding, bonding or the like.

[0096] In some embodiments, the first limiting structure 310 is integrally arranged with the isolation piece 300. That is, the first limiting structure 310 is integrally formed on the isolation piece 300, so that the forming difficulty of the first limiting structure 310 is reduced, the forming efficiency of the first limiting structure 310 is improved, the connection strength of the first limiting structure 310 and the isolation piece 300 is ensured, and the first limiting structure 310 can be stably arranged on the isolation piece 300, so that the first limiting structure 310 and the second limiting portion 210 can be matched to limit the cooperation between the isolation piece 300 and the first component, and the fixing difficulty of the isolation piece 300 is reduced.

[0097] Of course, in other embodiments, the first limiting structure 310 can also be connected to the isolation piece 300 by welding, bonding or clamping, and the present disclosure does not limit this.

[0098] In some examples, as shown in FIGS. 4, 6 and 7, the first limiting structure 310 is formed as a limiting protrusion, which can include a first sub-limiting protrusion, a second sub-limiting protrusion and a third sub-limiting protrusion, the second sub-limiting protrusion is connected with the first sub-limiting protrusion and the third sub-limiting protrusion respectively, the extending directions of the first sub-limiting protrusion and the third sub-limiting protrusion are substantially the same, and the length of the first sub-limiting protrusion in the circumferential direction can be less than the length of the third sub-limiting protrusion in the circumferential direction. The second limiting portion 210 is formed as a limiting groove, at least part of the groove width of the limiting groove in the circumferential direction of the isolation piece 300 decreases in the direction towards the slot opening of the limiting groove, so that the shape of the second limiting portion 210 is matched with the shape of the first limiting structure 310, so that when the limiting protrusion is arranged in the limiting groove, the limiting protrusion is in contact with the limiting groove in the circumferential direction and the radial direction, thereby facilitating the use of the first limiting structure 310 to limit the displacement of the isolation piece 300 in the circumferential direction and the radial direction, so that the position of the isolation piece 300 is stable.

[0099] It should be noted that the shape of the first limiting structure 310 is matched with the shape of the second limiting portion 210, that is, the fourth limiting surface, the fifth limiting surface and the sixth limiting surface are arranged on the second limiting portion 210, the fourth limiting surface corresponds to the first limiting surface 311, the fifth limiting surface corresponds to the second limiting surface 312, and the sixth limiting surface corresponds to the third limiting surface 313, the extending paths of the two limiting surfaces are consistent and in contact with each other, so that the limiting cooperation between the first limiting structure 310 and the second limiting portion 210 is facilitated.

[0100] In the description of the present disclosure, the features defined as "first", "second", "third", "fourth", "fifth", and "sixth" can explicitly or implicitly include one or more of the features for distinguishing the described features, without order and without emphasis.

[0101] In summary, in the circumferential and radial directions of the isolation piece 300, the first limiting structure 310 is in contact with the second limiting portion 210. That is, when the first limiting structure 310 is arranged in the second limiting portion 210, in the circumferential and radial directions of the isolation piece 300, the first limiting structure 310 is in contact with the second limiting portion 210, which facilitates the circumferential and radial limiting of the first limiting structure 310 by the second limiting portion 210, so that the position of the first limiting structure 310 relative to the second limiting portion 210 is stable, that is, the position of the isolation piece 300 relative to the first component is stable, which on the one hand plays a role in circumferentially positioning the isolation piece 300 and to some extent ensures that the oil carried by the rotor assembly 100 during operation does not push the isolation piece 300 to rotate synchronously.

[0102] On the other hand, when the isolation piece 300 is subjected to radial inward or radial outward pressure (for example, oil pressure in the rotor assembly 100), to some extent, the radial displacement of the isolation piece 300 relative to the first component is prevented, so that when the motor 1000 is working, to some extent, the trend of the isolation piece 300 expanding in the radial direction of the motor 1000 due to thermal expansion is avoided, and to some extent, the separation of the isolation piece 300 from the stator assembly 200 is avoided, so that the isolation piece 300 can be avoided from being cut by the high-speed rotating rotor assembly 100, the service life of the isolation piece 300 is prolonged, the working performance of the isolation piece 300 is ensured, and to some extent, the working performance of the rotor assembly 100 is ensured, that is, to some extent, the working performance of the motor 1000 is ensured.

[0103] In some embodiments, as shown in FIGS. 4, 5 and 6, in the circumferential direction of the motor 1000, at least part of the slot width of the second limiting portion 210 formed as a limiting groove gradually decreases in the direction towards the slot opening of the limiting groove, so that the side wall connecting the slot opening of the limiting groove extends obliquely, which not only achieves the circumferential and radial limiting of the limiting protrusion by the limiting groove, but also reduces the difficulty of forming the limiting groove.

[0104] In some embodiments, the first limiting surface 311 is configured as an outer surface or an inner surface of the isolation piece 300. In this way, the difficulty of forming the first limiting surface 311 is reduced, and the difficulty of forming the first limiting structure 310 is further reduced, which facilitates the limiting of the radial displacement and the circumferential displacement of the isolation piece 300 by the first limiting structure 310, and maximizes the position stability of the isolation piece 300.

[0105] In some embodiments, as shown in FIGS. 6 and 7, the distance from the first limiting surface 311 to the second limiting surface 312 is different along the circumferential direction of the isolation piece 300. Here, it is referred to that the distance from the first limiting surface 311 to the second limiting surface 312 is varied along the circumferential direction of the isolation piece 300, so that the opening of the first limiting portion 314 is arranged to gradually increase in the direction away from the bottom of the first limiting portion 314, which reduces the difficulty of the cooperation between the first limiting portion 314 and the second limiting portion 210, and further reduces the difficulty of the limiting of the isolation piece 300.

[0106] In some embodiments, as shown in FIGS. 6 and 7, along the circumferential direction of the isolation piece 300, the distance from the first limiting surface 311 to the second limiting surface 312 decreases from the circumferential outer side of the first limiting structure 310 to the circumferential center of the first limiting structure 310. In this way, the opening size of the first limiting portion 314 can be ensured, which reduces the difficulty of the forming of the first limiting portion 314, and further reduces the assembly difficulty of the first limiting portion 314 and the second limiting portion 210, thereby reducing the assembly difficulty of the isolation piece 300 and the first component, and improving the assembly efficiency.

[0107] For example, as shown in FIGS. 6 and 7, along the circumferential direction of the isolation piece 300, the distance from the first limiting surface 311 to the second limiting surface 312 gradually decreases from the circumferential outer side of the first limiting structure 310 to the circumferential center of the first limiting structure 310, which reduces the difficulty of the forming of the first limiting portion 314, and further ensures the opening size of the first limiting portion 314.

[0108] In some embodiments, as shown in FIGS. 6 and 7, along the radial direction of the isolation piece 300, the second limiting surface 312 is farther away from the isolation piece 300 than the first limiting surface 311, and the distance from the side wall of the first limiting portion 314 away from the isolation piece 300 to the side of the second limiting surface 312 close to the first limiting surface 311 is a first distance H2, and the first distance H2 is greater than or equal to the radial thickness H1 of the isolation piece 300. In this way, along the radial direction of the isolation piece 300, the first limiting portion 314 has a certain extension length, thereby ensuring the limiting strength of the first limiting structure 310 and the second limiting portion 210, and reducing the manufacturing cost of the first limiting structure 310.

[0109] In some embodiments, H2 can be equal to 1 to 1.5 times of H1, i.e., H2=(1-1.5)H1. When H2 is small (e.g., less than H1), the structural strength and limiting effect of the first limiting structure 310 will be reduced; when H2 is large (e.g., greater than 1.5H1), the manufacturing cost of the first limiting structure 310 will be increased, and the occupied space of the first limiting structure 310 will be increased, which is not conducive to the arrangement of the stator winding 230 in the following.

[0110] Therefore, in the motor of some embodiments of the present disclosure, the distance (e.g., the first distance H2) from the first limiting portion 314 to the side of the second limiting surface 312 close to the first limiting surface 311 is set to be (1-1.5)H1 with respect to the radial thickness H1 of the isolation piece 300, so as to improve the structural strength of the first limiting structure 310, ensure the limiting strength of the first limiting structure 310 and the second limiting portion 210, reduce the manufacturing cost of the first limiting structure 310, and avoid occupying too much space for the first limiting structure 310, so as to facilitate the arrangement of the stator winding 230 and ensure the working performance of the stator winding 230.

[0111] In some embodiments, as shown in FIGS. 5, 6 and 7, along the radial direction of the isolation piece 300, the second limiting surface 312 is farther away from the isolation piece 300 than the first limiting surface 311, and the distance between the side of the second limiting surface 312 close to the first limiting surface 311 and the side of the first limiting surface 311 away from the second limiting surface 312 is a second distance H3, for example, H3 can be equal to 1-2 times of H1, i.e., H3=(1-2)H1. In this way, the radial extension length of the first limiting structure 310 can be ensured to a certain extent while reducing the manufacturing cost and difficulty of the first limiting structure 310, so as to facilitate the limiting cooperation between the first limiting structure 310 and the second limiting portion 210.

[0112] For example, H3=H1, H3=1.5H1 or H3=2H1.

[0113] In some embodiments, the radial thickness H1 of the isolation piece 300 is 0.4-1.0mm. The radial thickness H1 of the isolation piece 300 can refer to FIGS. 6, 9 or 11. When the radial thickness H1 of the isolation piece 300 is small (e.g., less than 0.4mm), the structural strength of the isolation piece 300 is reduced, which is not conducive to ensuring the working performance of the isolation piece 300 and is prone to shorten the service life of the isolation piece 300. When the radial thickness H1 of the isolation piece 300 is large (e.g., greater than 1.0mm), the manufacturing cost of the isolation piece 300 is increased, and the occupied space of the isolation piece 300 is increased, which is not conducive to the miniaturization of the motor 1000.

[0114] Therefore, in the motor of some embodiments of the present disclosure, the radial thickness H1 of the isolation piece 300 is set to be 0.4-1.0mm, so as to improve the structural strength of the isolation piece 300, reduce the manufacturing cost of the isolation piece 300, and facilitate the miniaturization of the motor 1000.

[0115] For example, the radial thickness H1 of the spacer 300 is 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, or 1.0 mm, etc.

[0116] In some embodiments, the first limiting surface 311 includes one of a curved surface and a flat surface. Here, it is referred to that the first limiting surface 311 can be formed as a curved surface or a flat surface. When the first limiting surface 311 is formed as a flat surface, the forming difficulty of the first limiting surface 311 can be reduced. When the first limiting surface 311 is formed as a curved surface, the extension length of the first limiting surface 311 can be increased, thereby facilitating to increase the connection area between the first limiting portion 314 and the second limiting portion 210 and improving the limiting effect of the first limiting structure 310.

[0117] Of course, in other embodiments, the first limiting surface 311 can be formed as a combination of a curved surface and a flat surface.

[0118] In some embodiments, the second limiting surface 312 includes one of a curved surface and a flat surface. Here, it is referred to that the second limiting surface 312 can be formed as a curved surface or a flat surface. When the second limiting surface 312 is formed as a flat surface, the forming difficulty of the second limiting surface 312 can be reduced. When the second limiting surface 312 is formed as a curved surface, the extension length of the second limiting surface 312 can be increased, thereby facilitating to increase the connection area between the first limiting portion 314 and the second limiting portion 210 and improving the limiting effect of the first limiting structure 310.

[0119] Of course, in other embodiments, the second limiting surface 312 can be formed as a combination of a curved surface and a flat surface.

[0120] In some embodiments, the third limiting surface 313 includes one of a curved surface and a flat surface. Here, it is referred to that the third limiting surface 313 can be formed as a curved surface or a flat surface. When the third limiting surface 313 is formed as a flat surface, the forming difficulty of the third limiting surface 313 can be reduced. When the third limiting surface 313 is formed as a curved surface, the extension length of the third limiting surface 313 can be increased, thereby facilitating to increase the connection area between the first limiting portion 314 and the second limiting portion 210 and improving the limiting effect of the first limiting structure 310.

[0121] Of course, in other embodiments, the third limiting surface 313 can be formed as a combination of a curved surface and a flat surface.

[0122] In some embodiments, as shown in FIGS. 2, 3, 8 and 9, the second limiting structure 400 is arranged between the isolation piece 300 and the first component. That is, the first limiting structure 310 and the second limiting structure 400 are arranged between the isolation piece 300 and the first component, and the first limiting structure 310 and the second limiting structure 400 cooperate to further increase the connection strength between the isolation piece 300 and the first component, thereby improving the position stability of the isolation piece 300 and ensuring the working performance of the isolation piece 300.

[0123] In some embodiments, as shown in FIGS. 2, 3, 8 and 9, the second limiting structure 400 includes a third limiting portion 330 formed on the isolation piece 300, and a fourth limiting portion 224 formed on the first component, and the fourth limiting portion 224 cooperates with the third limiting portion 330 to achieve the limiting cooperation between the isolation piece 300 and the first component.

[0124] In some embodiments, as shown in FIGS. 2, 3, 8 and 9, one of the third limiting portion 330 and the fourth limiting portion 224 is a protrusion, and the other of the third limiting portion 330 and the fourth limiting portion 224 is a groove. The protrusion is limited in the groove to achieve the limiting cooperation between the fourth limiting portion 224 and the third limiting portion 330, and to reduce the cooperation difficulty and improve the cooperation strength between the fourth limiting portion 224 and the third limiting portion 330.

[0125] For example, as shown in FIGS. 2, 3, 8 and 9, the third limiting portion 330 is a protrusion, and the fourth limiting portion 224 is a groove.

[0126] In some embodiments, the protrusion is an arc-shaped protrusion, and the groove is an arc-shaped groove. In this way, the shapes of the protrusion and the groove are matched, so that the protrusion is limited in the groove to achieve the limiting cooperation between the fourth limiting portion 224 and the third limiting portion 330.

[0127] In addition, by setting the groove as an arc-shaped groove, it is beneficial to ensure that the width of the groove gradually decreases in the direction from the groove opening to the groove bottom (as shown in FIGS. 12 and 13). In this way, the opening size of the groove is ensured, which reduces the difficulty of forming the groove and reduces the assembly difficulty of the protrusion and the groove, thereby reducing the assembly difficulty of the isolation piece 300 and the stator assembly 200 and improving the assembly efficiency.

[0128] In addition, by setting the groove width to gradually increase in the direction from the groove opening, when the shapes of the protrusion and the protrusion are matched, it is beneficial to increase the radial thickness of the isolation piece 300 by the protrusion, thereby ensuring the injection molding effect of the isolation piece 300 and enhancing the structural strength of the isolation piece 300.

[0129] In some embodiments, as shown in FIGS. 8, 9, 10 and 11, at least part of the slot width of the fourth limiting portion 224 decreases in the direction towards the slot opening of the fourth limiting portion 224 in the circumferential direction of the motor 1000, and the third limiting portion 330 is shaped to match the fourth limiting portion 224. That is, the present disclosure is not limited to setting the slot width of the groove to gradually increase in the direction towards the slot opening of the groove, and in some embodiments, at least part of the slot width of the fourth limiting portion 224 can also be set to decrease in the direction towards the slot opening of the fourth limiting portion 224, so that when the third limiting portion 330 is arranged in the fourth limiting portion 224, the third limiting portion 330 can be limited in the fourth limiting portion 224 by the fourth limiting portion 224 to a certain extent to avoid the third limiting portion 330 moving out of the opening of the fourth limiting portion 224, so as to achieve the circumferential and radial contact of the third limiting portion 330 with the fourth limiting portion 224, so as to limit the third limiting portion 330 in the circumferential and radial directions by the fourth limiting portion 224, so as to stabilize the position of the third limiting portion 330 relative to the fourth limiting portion 224, that is, to ensure the position stability of the isolation piece 300 relative to the first component, and further to a certain extent avoid the circumferential and radial displacement of the isolation piece 300 relative to the first component.

[0130] It should be noted that the shape of the third limiting portion 330 matches the shape of the fourth limiting portion 224, that is, the fourth limiting portion 224 has a first surface facing the third limiting portion 330, and the third limiting portion 330 has a second surface facing the fourth limiting portion 224, and the extension paths of the first surface and the second surface are consistent, so that when the third limiting portion 330 is arranged in the fourth limiting portion 224, the limiting cooperation of the third limiting portion 330 with the fourth limiting portion 224 can be facilitated.

[0131] That is, the motor in some embodiments of the present disclosure simultaneously limits the isolation piece 300 by the cooperation of the second limiting portion 210 and the first limiting structure 310, and the cooperation of the fourth limiting portion 224 and the third limiting portion 330, so as to maximize the position stability of the isolation piece 300.

[0132] In some embodiments, as shown in FIGS. 3, 8 and 9, the fourth limiting portion 224 is formed in the form of a dovetail groove, so that when the third limiting portion 330 is arranged in the fourth limiting portion 224, the third limiting portion 330 can be embedded in the first component, further enhancing the fit of the third limiting portion 330 and the first component, to some extent avoiding the radial displacement of the spacer 300 relative to the first component when the spacer 300 is subjected to radial inward or radial outward pressure, and further to some extent avoiding the fragmentation of the spacer 300 by the high-speed operation of the mover assembly 100, that is, avoiding the leakage of lubricating oil filled in the spacer 300, thereby to some extent ensuring the working performance of the mover assembly 100, that is, to some extent ensuring the working performance of the motor 1000.

[0133] In summary, by arranging the first limiting structure 310 on the spacer 300, the first limiting structure 310 is provided with a unique undercut structure (for example, the first limiting portion 314), which can to some extent avoid the separation between the spacer 300 and the first component during the repeated impact of the spacer 300 under the radial pressure from the inside and outside, and the second limiting structure 400 is formed in the form of a dovetail groove structure, which cooperates with the third limiting portion 330 on the spacer 300 to further enhance the connection between the spacer 300 and the first component and improve the positional stability of the spacer 300.

[0134] Of course, in some other embodiments, as shown in FIGS. 10 and 11, the fourth limiting portion 224 is also formed in the form of a circular groove, so that while achieving the embedding of the spacer 300 in the first component, the forming difficulty of the fourth limiting portion 224 can also be reduced, and because the shape of the third limiting portion 330 matches the shape of the fourth limiting portion 224, the forming difficulty of the third limiting portion 330 can also be reduced.

[0135] In some embodiments, the third limiting portion 330 is integrally arranged with the spacer 300. That is, the third limiting portion 330 is integrally formed on the spacer 300, so that while reducing the forming difficulty of the third limiting portion 330, the forming efficiency of the third limiting portion 330 can also be improved, and the connection strength between the third limiting portion 330 and the spacer 300 is ensured, so that the third limiting portion 330 can be stably arranged on the spacer 300, thereby ensuring the limiting cooperation between the spacer 300 and the first component by the cooperation of the third limiting portion 330 and the fourth limiting portion 224, and reducing the fixing difficulty of the spacer 300.

[0136] Of course, in some other embodiments, the third limiting portion 330 can also be connected to the spacer 300 by welding, bonding or clamping, and the present disclosure does not limit this.

[0137] In some embodiments, as shown in FIGS. 5 and 6, the first limiting structure 310 is connected with the isolation piece 300 through a first circular arc segment 340. The first circular arc segment 340 can avoid stress concentration at the connection between the first limiting structure 310 and the isolation piece 300 to some extent, thereby avoiding the fracture of the first limiting structure 310 relative to the isolation piece 300 to some extent, prolonging the service life of the first limiting structure 310 and the isolation piece 300, and ensuring the working performance of the first limiting structure 310.

[0138] In some embodiments, the radius R2 of the first circular arc segment 340 ranges from 0.2 mm to 4.0 mm, so as to effectively avoid stress concentration at the connection between the first limiting structure 310 and the isolation piece 300 by using the first circular arc segment 340.

[0139] For example, the radius R2 of the first circular arc segment 340 is 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, or 4.0 mm, etc.

[0140] In some embodiments, as shown in FIGS. 9, 10 and 11, the third limiting portion 330 is connected with the isolation piece 300 through a second circular arc segment 350. The second circular arc segment 350 can avoid stress concentration at the connection between the third limiting portion 330 and the isolation piece 300 to some extent, thereby avoiding the fracture of the third limiting portion 330 relative to the isolation piece 300 to some extent, prolonging the service life of the third limiting portion 330 and the isolation piece 300, and ensuring the working performance of the third limiting portion 330.

[0141] In some embodiments, the radius R3 of the second circular arc segment 350 ranges from 0.2 mm to 2.0 mm, so as to effectively avoid stress concentration at the connection between the third limiting portion 330 and the isolation piece 300 by using the second circular arc segment 350.

[0142] For example, the radius R2 of the second circular arc segment 350 is 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, or 2 mm, etc.

[0143] In some embodiments, as shown in FIGS. 9 and 11, along the radial direction of the isolation piece 300, the protrusion has a protrusion height H4, and H4 is greater than or equal to the radial thickness H1 of the isolation piece 300 (i.e., H4≥H1). In this way, the limiting strength of the third limiting portion 330 and the fourth limiting portion 224 can be ensured, and the manufacturing cost of the third limiting portion 330 can be reduced.

[0144] In some embodiments, H4 can be equal to 1-2 times of H1, i.e. H4=(1-2)H1. When H4 is smaller (e.g. smaller than H1), the structural strength and the limiting effect of the third limiting portion 330 will be reduced; when H4 is larger (e.g. larger than 2H1), the manufacturing cost and the manufacturing difficulty of the third limiting portion 330 will be increased.

[0145] Therefore, in the motor of some embodiments of the present disclosure, by setting the radial protrusion height H4 of the third limiting portion 330 and the radial thickness H1 of the isolation piece 300 to satisfy H4=(1-2)H1, the structural strength of the third limiting portion 330 is improved, while the limiting strength of the third limiting portion 330 and the fourth limiting portion 224 is ensured, and the manufacturing cost of the third limiting portion 330 is reduced.

[0146] In some embodiments, as shown in FIGS. 2 and 3, the motor includes a plurality of second limiting structures 400 and a plurality of first limiting structures 310, and the plurality of first limiting structures 310 and the plurality of second limiting structures 400 are arranged at intervals along the circumference of the isolation piece 300. The plurality of first limiting structures 310 and the plurality of second limiting structures 400 cooperate to increase the connection strength between the isolation piece 300 and the first component, so as to facilitate limiting the isolation piece 300 by the first component, improve the position stability of the isolation piece 300 to a certain extent, and further ensure the working performance of the isolation piece 300.

[0147] In the description of the present disclosure, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0148] It should be noted that the plurality of first limiting structures 310 arranged at intervals along the circumference of the isolation piece 300 can be that the isolation piece 300 is provided with a plurality of first limiting structures 310 arranged at intervals along the circumference thereof, and the first component is provided with a plurality of second limiting portions 210 arranged at intervals along the circumference thereof; or, the isolation piece 300 is provided with a plurality of second limiting portions 210 arranged at intervals along the circumference thereof, and the first component is provided with a plurality of first limiting structures 310 arranged at intervals along the circumference thereof; or, the isolation piece 300 is provided with a plurality of first limiting structures 310 and a plurality of second limiting portions 210 arranged at intervals along the circumference thereof, and the first component is provided with a plurality of first limiting structures 310 and a plurality of second limiting portions 210 arranged at intervals along the circumference thereof, and the plurality of first limiting structures 310 correspond to the plurality of second limiting portions 210 one by one, so as to increase the connection strength between the isolation piece 300 and the first component.

[0149] Correspondingly, the plurality of second limiting structures 400 are arranged at intervals in the circumferential direction of the isolation piece 300. The isolation piece 300 can be provided with a plurality of third limiting portions 330 arranged at intervals in the circumferential direction thereof, and the first component can be provided with a plurality of fourth limiting portions 224 arranged at intervals in the circumferential direction thereof. Alternatively, the isolation piece 300 can be provided with a plurality of fourth limiting portions 224 arranged at intervals in the circumferential direction thereof, and the first component can be provided with a plurality of third limiting portions 330 arranged at intervals in the circumferential direction thereof. Alternatively, the isolation piece 300 can be provided with a plurality of third limiting portions 330 and a plurality of fourth limiting portions 224 arranged at intervals in the circumferential direction thereof, and the first component can be provided with a plurality of third limiting portions 330 and a plurality of fourth limiting portions 224 arranged at intervals in the circumferential direction thereof, with the plurality of third limiting portions 330 corresponding one-to-one to the plurality of fourth limiting portions 224, so as to further increase the connection strength of the isolation piece 300 and the first component.

[0150] In some embodiments, as shown in FIGS. 2, 3 and 4, the first component is a stator assembly 200, which includes a stator yoke portion 221 and a plurality of stator tooth portions 222 arranged at intervals in the circumferential direction of the stator yoke portion 221. Between any two adjacent stator tooth portions 222 of the plurality of stator tooth portions 222, a first limiting groove 240 is formed. At least part of the first limiting groove 240 is formed into a second limiting portion 210. The first limiting portion 314 is arranged in the first limiting groove 240, and the stator tooth portion 222 cooperates with the first limiting portion 314. It can be understood that, by utilizing the structure of the stator assembly 200 to define the limiting structure (e.g., the second limiting portion 210) that cooperates with the first limiting portion 314, the limiting cooperation between the isolation piece 300 and the stator assembly 200 can be achieved, and at the same time, the second limiting portion 210 does not need to be separately machined on the stator assembly 200, thereby reducing the difficulty of forming the second limiting portion 210 and improving the forming efficiency of the stator assembly 200.

[0151] In summary, the isolation piece 300 of some embodiments of the present disclosure is provided with the first limiting portion 314, and the stator assembly 200 is provided with the second limiting portion 210 (the structure of the second limiting portion 210 can be referred to FIG. 4). The first limiting portion 314 is arranged in the second limiting portion 210, so as to achieve the limiting cooperation between the isolation piece 300 and the stator assembly 200, thereby facilitating the use of the stator assembly 200 to support the isolation piece 300. At the same time, the position stability of the isolation piece 300 is improved, thereby ensuring the working performance of the isolation piece 300.

[0152] In some embodiments, the first limiting portion 314 is assembled in the first limiting groove 240, and in the circumferential direction of the first limiting portion 314, at least part of the circumferential two side walls of the first limiting portion 314 respectively abuts against the circumferential inner wall of the first limiting groove 240, so as to facilitate the circumferential limiting of the first limiting portion 314 by the first limiting groove 240, and to avoid the circumferential displacement of the first limiting portion 314 relative to the first limiting groove 240 to a certain extent.

[0153] In some embodiments, in the radial direction of the first limiting portion 314, the radial outer side wall of the first limiting portion 314 abuts against the groove bottom of the first limiting groove 240, and the slot opening of the first limiting groove 240 is inserted into the radial middle part of the first limiting portion 314; or, in the radial direction of the first limiting portion 314, the radial outer side wall of the first limiting portion 314 is spaced apart from the groove bottom of the first limiting groove 240, and the slot opening of the first limiting groove 240 is inserted into the radial middle part of the first limiting portion 314, so as to facilitate the radial limiting of the first limiting portion 314 by the first limiting groove 240, and to avoid the radial displacement of the first limiting portion 314 relative to the first limiting groove 240 to a certain extent, so that the circumferential and radial displacement of the isolation piece 300 relative to the stator assembly 200 can be avoided to a certain extent, the fixing difficulty of the isolation piece 300 is reduced, and the position stability of the isolation piece 300 is improved.

[0154] In some embodiments, as shown in FIGS. 2, 3 and 4, at least part of the end portions of the two adjacent stator tooth portions 222 away from the stator yoke portion 221 protrude towards each other to form a stator shoe portion 223, in which case the motor comprises a plurality of stator shoe portions 223, and the first limiting groove 240 is formed between two adjacent stator shoe portions 223 in the plurality of stator shoe portions 223, and the side walls opposite to each other of the two adjacent stator shoe portions 223 form the groove walls of the first limiting groove 240, and the first limiting structure 310 is clamped on the two adjacent stator shoe portions 223, so as to facilitate the contact and cooperation of the plurality of first limiting structures 310 with the first limiting groove 240 in the circumferential and radial directions of the stator assembly 200.

[0155] It should be noted that the stator core 220 is part of the magnetic circuit of the motor 1000, so that when the stator winding 230 is supplied with three-phase alternating current to generate a rotating magnetic field, the rotating magnetic field can act on the rotor assembly 100 to drive the rotor assembly 100 to rotate at high speed, thereby ensuring the working performance of the motor 1000.

[0156] In addition, by forming the first limiting groove 240 by cooperation of the two adjacent stator teeth 222, the forming difficulty of the first limiting groove 240 can be reduced, thereby reducing the fixing difficulty of the stator winding 230.

[0157] In some embodiments, as shown in FIGS. 2 and 3, an insulating framework 250 is arranged around the inner circumferential wall of the first limiting groove 240, and the insulating framework 250 is attached to the stator core 220, so as to arrange the insulating framework 250 between the stator core 220 and the stator winding 230. The insulating framework 250 mainly plays an electrical insulation role, and can also avoid the stator winding 230 being cut by the stator core 220 when the winding is tensioned, thereby avoiding the phenomenon of poor insulation of the stator assembly 200, so as to ensure the working performance of the stator assembly 200.

[0158] In some embodiments, the third limiting part 330 is arranged on the side of the isolation piece 300 facing the stator assembly 200, and the end surface of the stator tooth 222 away from the stator yoke 221 is provided with a fourth limiting part 224 (the structure of the fourth limiting part 224 can be referred to FIG. 8), and the third limiting part 330 is arranged in the fourth limiting part 224, so as to realize the limiting cooperation of the isolation piece 300 and the stator assembly 200 by the second limiting structure 400.

[0159] It should be noted that, since the second limiting part 210 is formed between the two adjacent stator teeth 222, by arranging the fourth limiting part 224 on the end surface of the stator tooth 222 away from the stator yoke 221, the fourth limiting part 224 can be arranged opposite to the isolation piece 300, and the second limiting part 210 and the fourth limiting part 224 can be arranged at intervals in the circumferential direction of the stator assembly 200, so as to avoid the mutual interference of the second limiting part 210 and the fourth limiting part 224 during processing and use, thereby reducing the forming difficulty of the second limiting part 210 and the fourth limiting part 224, and in addition, the second limiting part 210 and the fourth limiting part 224 can be used to realize the fixed connection of the isolation piece 300 and the stator assembly 200, thereby improving the connection strength.

[0160] It should be noted that, in some embodiments of the motor, the fourth limiting part 224 is arranged on the end surface of the stator tooth 222 away from the stator yoke 221, and when the fourth limiting part 224 is a groove, the fourth limiting part 224 can also be formed as a cold runner, so as to avoid the formation of a fusion mark at the convergence of the glue material during the injection molding of the isolation piece 300 on the stator assembly 200, thereby avoiding the insufficient material structure strength at the thin wall, so as to ensure the structural strength of the isolation piece 300.

[0161] Here, the cold runner is also called a cold sink, which is used to store the cold sprue generated during the injection interval in a plastic injection molding mold.

[0162] In some embodiments, the isolation piece 300 is made of plastic. Compared with manufacturing the isolation piece 300 as a metal piece, the plastic piece can avoid the invalid waste heat generated by the motor 1000 during operation due to eddy current loss to some extent, thereby avoiding additional consumption of electric energy, improving the efficiency of the motor 1000, and further ensuring the working performance of the motor 1000. In addition, the plastic piece can also reduce the manufacturing cost of the isolation piece 300.

[0163] In some embodiments, the isolation piece 300 is made of PPA (Polyphthalamide) plus GF (Glass fiber) 40 (polyphthalamide plus 40% glass fiber) or PA (Polyamide) 66 plus GF 30 (nylon 66 plus 30% glass fiber), so that the isolation piece 300 is a plastic piece.

[0164] In addition, by forming the isolation piece 300 as a plastic piece, during the molding of the isolation piece 300, a post-injection molding assembly process can be used, or the isolation piece 300 can be directly molded and sealed to the stator core 220 through a plastic packaging process, thereby reducing the molding difficulty of the isolation piece 300 and the assembly difficulty of the isolation piece 300 and the stator assembly 200.

[0165] In addition, when the isolation piece 300 is directly molded and sealed to the stator core 220 through the plastic packaging process, the first limiting structure 310 and the third limiting portion 330 of the isolation piece 300 can be accurately fitted to the stator assembly 200, thereby reducing the assembly difficulty of the isolation piece 300 and the stator assembly 200.

[0166] In some embodiments, the motor 1000 is formed as a rotating motor, the rotating motor includes a housing, the rotor assembly 100 and the stator assembly 200 are arranged in the housing, and the stator assembly 200 is sleeved on the outer periphery of the rotor assembly 100. The rotating shaft 130 of the rotor assembly 100 is rotatably connected to the housing through a rotating bearing. In this way, the rotor assembly 100 and the stator assembly 200 can be supported by the housing, and the rotor assembly 100 can be effectively rotated relative to the stator assembly 200, thereby ensuring the working performance of the motor 1000.

[0167] In some embodiments, as shown in FIG. 1, FIG. 2 and FIG. 14, the mover assembly 100 comprises a mover core 110, a rotating shaft 130 connected at a radial middle portion of the mover core 110, the mover core 110 is provided with a mounting groove, and the permanent magnet 120 is arranged in the mounting groove to realize inlaying of the permanent magnet 120 on the mover core 110, which can reduce the fixing difficulty of the permanent magnet 120 and improve the position stability of the permanent magnet 120, thereby ensuring the working performance of the permanent magnet 120 and ensuring that the cooperation between the permanent magnet 120 and the stator winding 230 can effectively realize the coupling cooperation between the stator assembly 200 and the mover assembly 100. Here, the permanent magnet 120 can refer to the white rectangle in FIG. 2 and FIG. 14.

[0168] In some embodiments, the permanent magnet 120 is made of neodymium, iron or boron, etc. rare earth elements, and the surface of the permanent magnet 120 is subjected to electroplating treatment, so that the permanent magnet 120 has high temperature resistance, corrosion resistance and other properties, thereby ensuring the working performance of the permanent magnet 120 and prolonging the service life of the permanent magnet 120.

[0169] In some embodiments, as shown in FIG. 14, the radial two sides of each permanent magnet 120 are respectively provided with a limiting tooth 111, and a plurality of limiting teeth 111 are matched to limit the radial displacement of the permanent magnet 120, so that the radial displacement of the permanent magnet 120 can be avoided to some extent, the position stability of the permanent magnet 120 is improved, and the working performance of the permanent magnet 120 is ensured.

[0170] In some embodiments, as shown in FIG. 14, the mover core 110 is further provided with a weight-reducing hole 150, and the weight-reducing hole 150 is used to reduce the weight of the mover core 110 and reduce the material of the mover core 110, so that the manufacturing cost of the mover core 110 is reduced, and the response speed of the mover core 110 is improved, thereby ensuring that the mover assembly 100 can effectively reciprocate when the stator assembly 200 and the mover assembly 100 interact and affect each other, so as to ensure the working performance of the motor 1000.

[0171] For example, the weight-reducing hole 150 is filled with a plastic package, which can avoid that a large amount of lubricating oil is filled in the weight-reducing hole 150 to affect the response speed of the mover core 110, and by filling the plastic package into the weight-reducing hole 150, it can be ensured that part of the plastic package can be filled around the permanent magnet 120 to fix the permanent magnet 120.

[0172] Here, the plastic package can be understood as a plastic part, which has light weight and low cost.

[0173] The suspension system 2000 of some embodiments of the present disclosure is described below.

[0174] As shown in FIG. 15, a suspension system 2000 according to some embodiments of the present disclosure comprises a motor.

[0175] The motor herein can be the aforementioned motor 1000, and the structure of the motor 1000 will not be repeated here.

[0176] From the above structure, it can be seen that the suspension system 2000 according to some embodiments of the present disclosure can ensure the working performance of the suspension system 2000 by using the aforementioned motor 1000.

[0177] It should be noted that when the motor 1000 according to some embodiments of the present disclosure is used in the suspension system 2000, the motor 1000 is used to drive oil into the shock absorber of the suspension system 2000 or to extract oil from the shock absorber of the suspension system 2000.

[0178] A vehicle 3000 according to some embodiments of the present disclosure will be described below.

[0179] As shown in FIG. 16, a vehicle 3000 according to some embodiments of the present disclosure comprises a suspension system.

[0180] The suspension system is the aforementioned suspension system 2000, and the structure of the suspension system will not be repeated here.

[0181] From the above structure, it can be seen that the vehicle 3000 according to some embodiments of the present disclosure can ensure the working performance of the vehicle 3000 by using the aforementioned suspension system, thereby improving the driving experience.

[0182] In the description of the present disclosure, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0183] The motor 1000, the suspension system and other components of the vehicle according to some embodiments of the present disclosure are known to those skilled in the art, and will not be described in detail here.

[0184] In the description of the present disclosure, the description referring to the terms "embodiment", "example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0185] While the embodiments of the present disclosure have been shown and described, it will be understood by those skilled in the art that various changes, modifications, alternatives, and variations can be made thereto without departing from the principles and spirit of the present disclosure, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric motor, comprising: Moving component; A stator assembly, wherein the stator assembly and the mover assembly are coupled to each other so that the mover assembly can reciprocate; as well as An isolator is disposed between the mover assembly and the stator assembly, the isolator is connected to a first component, the first component being one of the mover assembly and the stator assembly, and at least one first limiting structure is provided between the isolator and the first component, the at least one first limiting structure being configured to limit the radial displacement of the isolator.

2. The motor according to claim 1, wherein, Each of the at least one first limiting structure includes a first limiting part disposed on the isolation member, and a second limiting part disposed on the first member, wherein the first limiting part cooperates with the second limiting part.

3. The motor according to claim 2, wherein, The first limiting part has a first limiting surface and a second limiting surface, the first limiting surface and the second limiting surface are arranged radially apart along the isolation member, and the second limiting part cooperates with the first limiting surface and the second limiting surface.

4. The motor according to claim 2, wherein, The first limiting structure is also configured to limit the displacement of the isolator in the circumferential direction.

5. The motor according to claim 4, wherein, The first limiting part has a first limiting surface, a second limiting surface and a third limiting surface. The first limiting surface and the second limiting surface are arranged radially apart along the isolation member. The third limiting surface is connected between the first limiting surface and the second limiting surface. The first limiting surface, the second limiting surface and the third limiting surface all cooperate with the second limiting part.

6. The motor according to any one of claims 3 to 5, wherein, The at least one first limiting structure includes two first limiting parts, which are connected and symmetrically arranged.

7. The motor according to claim 6, wherein, The two first limiting parts are integrally set.

8. The motor according to any one of claims 3 to 7, wherein, The first limiting surface of the first limiting part is configured as the outer surface or inner surface of the isolation member.

9. The motor according to any one of claims 3 to 8, wherein, The first limiting part has a first limiting surface and a second limiting surface, and the distance from the first limiting surface to the second limiting surface is different along the circumference of the isolation member.

10. The motor according to claim 9, wherein, Along the circumferential direction of the isolator, from the outer circumferential side of the first limiting structure to the circumferential center of the first limiting structure, the distance from the first limiting surface to the second limiting surface decreases.

11. The motor according to any one of claims 3 to 10, wherein, Along the radial direction of the isolation member, the second limiting surface of the first limiting portion is further away from the isolation member than the first limiting surface of the first limiting portion. The distance from the side wall of the first limiting portion away from the isolation member to the side of the second limiting surface closer to the first limiting surface is a first distance H2. The first distance H2 is greater than or equal to the radial thickness H1 of the isolation member.

12. The motor according to claim 11, wherein, H2 = (1 ~ 1.5)H1.

13. The motor according to any one of claims 3 to 12, wherein, Along the radial direction of the isolation member, the second limiting surface of the first limiting portion is further away from the isolation member than the first limiting surface of the first limiting portion. The distance between the side of the second limiting surface closer to the first limiting surface and the side of the first limiting surface farther from the second limiting surface is the second distance H3, where H3 = (1~2)H1.

14. The motor according to any one of claims 3 to 13, wherein, The radial thickness H1 of the isolation element is 0.4 mm to 1.0 mm.

15. The motor according to any one of claims 3 to 14, wherein, The first limiting surface and the second limiting surface of the first limiting portion satisfy at least one of the following: The first limiting surface includes one of a curved surface and a plane; or, the second limiting surface includes one of a curved surface and a plane.

16. The motor according to any one of claims 2 to 15, wherein, The first limiting part has a third limiting surface, which includes either a curved surface or a plane.

17. The motor according to any one of claims 1 to 16, wherein, At least one second limiting structure is provided between the isolation component and the first component.

18. The motor according to claim 17, wherein, Each of the at least one second limiting structure includes a third limiting portion formed on the isolator and a fourth limiting portion formed on the first component, wherein the fourth limiting portion cooperates with the third limiting portion.

19. The motor according to claim 18, wherein, One of the third limiting part and the fourth limiting part is a protrusion, and the other of the third limiting part and the fourth limiting part is a groove.

20. The motor according to claim 19, wherein, The protrusion is an arc-shaped protrusion, and the groove is an arc-shaped groove.

21. The motor according to claim 18 or 19, wherein, The third limiting part is integrally formed with the isolation component.

22. The motor according to claim 19 or 20, wherein, Along the radial direction of the spacer, the protrusion height of the protrusion is H4, and H4 is greater than or equal to the radial thickness H1 of the spacer.

23. The motor according to claim 22, wherein, H4 = (1~2)H1.

24. The motor according to any one of claims 17-23, wherein, The at least one second limiting structure includes a plurality of second limiting structures, the first limiting structure includes a plurality of first limiting structures, and the plurality of first limiting structures and the plurality of second limiting structures are arranged at intervals along the circumference of the isolation member.

25. The motor according to any one of claims 2 to 24, wherein, The first component is a stator assembly, which includes a stator yoke and a plurality of stator teeth. The plurality of stator teeth are spaced apart circumferentially along the stator yoke. A first limiting groove is formed between two adjacent stator teeth. At least a portion of the first limiting groove is formed as a second limiting part. The first limiting part is disposed in the first limiting groove, and the stator teeth cooperate with the first limiting part.

26. The motor according to any one of claims 1 to 25, wherein, The insulating component is made of plastic.

27. A suspension system comprising a motor according to any one of claims 1-26.

28. A vehicle comprising the suspension system of claim 27.

Images