Disc type motor and vehicle

Abstract

The utility model relates to the technical field of motors, and provides a disc type motor and a vehicle, the disc type motor comprises a housing, a rotating shaft, a rotor and a stator, the rotating shaft is rotatably installed on the housing, and the rotor is located in the housing and fixed on the rotating shaft; the stator is fixed on the inner wall surface, in the axial direction of the rotating shaft, of the shell, the stator comprises a plurality of stator sections arranged in the circumferential direction of the rotating shaft, each stator section comprises a stator iron core and a winding wound on the stator iron core, and the stator iron core is of a laminated structure. The stator in the disc type motor comprises the plurality of stator sections arranged in the circumferential direction of the rotating shaft, and the stator core of each stator section is of a lamination structure formed by lamination, so that the manufacturing process of the stator core is simple, and the precision is high.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a disc motor and a vehicle. Background Art

[0002] Compared with traditional motors, disc motors have the advantages of high power density, high operating efficiency and fast response time, so disc motors are widely used. At present, the stator core of disc motors is made of strip silicon steel sheets that are punched and wound at the same time. This manufacturing process is difficult, and the tooth surface after winding is irregular, which affects the product quality. Utility Model Content

[0003] In view of this, the embodiments of the present application provide a disc-type motor and a vehicle to solve the problem of the difficulty of the manufacturing process of the existing stator core.

[0004] An embodiment of the first aspect of the present application proposes a disc motor, comprising a housing, a rotating shaft, a rotor and a stator, wherein the rotating shaft is rotatably mounted on the housing, and the rotor is located in the housing and fixed on the rotating shaft; the stator is fixed to the housing on the axial inner wall surface of the rotating shaft, the stator comprises a plurality of stator segments arranged along the circumference of the rotating shaft, the stator segments comprise a stator core and a winding wound on the stator core, and the stator core is a laminated structure.

[0005] In the disc motor provided in the embodiment of the present application, the stator includes a plurality of stator segments arranged circumferentially of the rotating shaft, and the stator core of each stator segment is a laminated structure formed by laminations, so that the manufacturing process of the stator core is simple and the precision is high; moreover, the wire is wound on the stator core of each stator segment, so that the winding is tighter, the motor slot fill rate is improved, the resistance and loss are reduced, the power density of the disc motor is improved, and it is conducive to automated mass production.

[0006] In some embodiments, the stator core is formed by radial laminations along the shaft.

[0007] In some embodiments, the stator core includes a stator yoke and stator teeth, and the two stator yokes of two adjacent stator cores abut against each other in the circumferential direction of the rotating shaft; the width of the outer end of the stator yoke in the circumferential direction of the rotating shaft is greater than the width of the inner end of the stator yoke in the circumferential direction of the rotating shaft.

[0008] In some embodiments, the cross-sectional shape of the stator yoke in the axial direction perpendicular to the rotating shaft is trapezoidal or fan-shaped.

[0009] In some embodiments, a positioning protrusion is provided on one of the stator yoke and the housing, and a positioning recess that is positioned and matched with the positioning protrusion is provided on the other of the stator yoke and the housing.

[0010] In some embodiments, the outer shell is provided with a positioning recess on the axial inner wall surface of the rotating shaft, and the stator yoke is provided with a positioning protrusion on the side facing away from the stator teeth. The positioning protrusion is located at the edge of the stator yoke in the circumferential direction of the rotating shaft, and the two positioning protrusions abutting against each other on two adjacent stator yokes are positioned and matched with the same positioning recess.

[0011] In some embodiments, the positioning concave portion and the positioning convex portion are both strip-shaped structures.

[0012] In some embodiments, the rotor is provided with the stator on both axial sides of the support shaft.

[0013] In some embodiments, the rotor includes a rotor support, a plurality of rotor magnets and a limit member, the rotor support is provided with a plurality of slots arranged at intervals along its circumference; a snap-fitting protrusion is provided on the slot wall of the slot and on one of the rotor magnets, a snap-fitting recess is provided on the slot wall of the slot and on the other of the rotor magnets, the snap-fitting protrusion and the snap-fitting recess are snap-fitted to limit the axial movement of the rotor magnet along the rotor support; the limit member is provided on the rotor support to prevent the rotor magnet from escaping from the slot in the radial direction of the rotor support.

[0014] In some embodiments, the limiting member is a limiting ring provided on the outer circumferential surface of the rotor support.

[0015] In some embodiments, the disk motor further comprises a supporting shaft passing through the housing and connected to the housing, and the rotating shaft is rotatably mounted between the supporting shaft and the housing.

[0016] A second aspect of the present application provides a vehicle, which includes the disc-type motor as described in the first aspect.

[0017] The vehicle adopts all the embodiments of the above-mentioned disc motor, and thus has all the beneficial effects of the above-mentioned embodiments, which will not be described one by one here.

[0018] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or conventional technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 is a schematic diagram of the structure of a disc motor provided in some embodiments of the present application;

[0021] Figure 2 yes Figure 1 A cross-sectional view of the disc motor shown;

[0022] Figure 3 yes Figure 2 A schematic diagram of the structure of the first half shell;

[0023] Figure 4 is a schematic diagram of the structure of a stator provided in some embodiments of the present application;

[0024] Figure 5 yes Figure 4 Schematic diagram of the structure of the middle stator segment;

[0025] Figure 6 yes Figure 5 Schematic diagram of the structure of the stator core;

[0026] Figure 7 is a schematic diagram of a structure in which two stator cores are abutted provided in some embodiments of the present application;

[0027] Figure 8 is a schematic diagram of the structure of a rotor provided in some embodiments of the present application;

[0028] Fig. 9 yes Figure 8 An exploded view of the rotor shown;

[0029] Fig.10 yes Fig. 9 Enlarged view of point B in the middle.

[0030] The meanings of the marks in the figure are:

[0031] 100. Disc motor;

[0032] 10. Support shaft;

[0033] 20. housing; 21. first half housing; 211. positioning recess; 212. first fixing hole; 22. second half housing; 23. heat sink;

[0034] 30. Rotating shaft;

[0035] 40. rotor; 41. rotor bracket; 411. slot; 4111. clamping concave portion; 42. rotor magnetic steel; 421. clamping convex portion; 43. stopper;

[0036] 50. stator; 51. stator segment; 511. stator core; 5111. stator yoke; 51111. outer end; 51112. inner end; 51113. positioning protrusion; 51114. second fixing hole; 5112. stator tooth; 512. winding;

[0037] 60. First bearing;

[0038] 70. Second bearing. DETAILED DESCRIPTION

[0039] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0041] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0042] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0043] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0044] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0045] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0046] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0047] The first embodiment of the present application provides a disc motor. Figure 1 , Figure 2 , Figure 4 and Figure 5 The disk motor 100 includes a housing 20, a rotating shaft 30, a rotor 40, and a stator 50. The rotating shaft 30 is rotatably mounted on the housing 20, the rotor 40 is in the housing 20 and fixed on the rotating shaft 30; the stator 50 is fixed on the inner wall surface of the housing 20 in the axial direction of the rotating shaft 30, and the stator 50 includes a plurality of stator segments 51 arranged along the circumference of the rotating shaft 30, and the stator segment 51 includes a stator core 511 and a winding 512 wound on the stator core 511, and the stator core 511 is a laminated structure.

[0048] When viewed along the axial direction of the rotating shaft 30 , the shape of the housing 20 may be circular, elliptical, polygonal, etc., as long as the rotation of the rotor 40 in the housing 20 is not affected.

[0049] Optionally, the rotating shaft 30 may be a sleeve structure, and a second bearing 70 may be provided between the rotating shaft 30 and the housing 20 to facilitate the rotating shaft 30 to rotate relative to the housing 20. The rotating shaft 30 is used to be fixedly connected to the wheel hub so that the wheel hub rotates with the rotating shaft 30.

[0050] The rotor 40 is located in the housing 20 and fixed on the rotating shaft 30 , that is, the rotating shaft 30 rotates together with the rotor 40 , and the rotor 40 does not contact the inner wall surface of the housing 20 .

[0051] The axial direction of the rotating shaft 30 is Figure 1 The X direction in .

[0052] The stator 50 is fixed on the inner wall surface of the housing 20 in the axial direction of the rotating shaft 30. It can be understood that the stator 50 can be fixed on the inner wall surface of one side of the housing 20 in the axial direction of the rotating shaft 30, or the stator 50 can be fixed on the inner wall surfaces of both sides of the housing 20 respectively.

[0053] The stator 50 includes a plurality of stator segments 51 arranged along the circumferential direction of the rotating shaft 30 , that is, the plurality of stator segments 51 are independently arranged and form the annular stator 50 .

[0054] The stator segment 51 includes a stator core 511 and a winding 512 wound around the stator core 511. The stator core 511 is fixed to the inner wall surface of the outer shell 20, thereby fixing the stator segment 51 to the inner wall surface of the outer shell 20. For example, the stator core 511 can be fixed to the inner wall surface of the outer shell 20 by welding, clamping, glue injection connection, fastener connection, etc.

[0055] The stator core 511 is a laminated structure, that is, the stator core 511 is formed by lamination; optionally, the stator core 511 can be formed by laminating silicon steel sheets. Lamination refers to stacking thin sheet materials of a predetermined shape layer by layer along the thickness direction of the thin sheet to form a whole.

[0056] In the disc motor 100 provided in the embodiment of the present application, the stator 50 includes a plurality of stator segments 51 arranged along the circumference of the rotating shaft 30. The stator core 511 of each stator segment 51 is formed by lamination. Compared with the stator core 511 made of strip-shaped sheets while punching teeth and winding, the manufacturing process of the stator core 511 is simple and the precision is high. Moreover, winding on the stator core 511 of each stator segment 51 is relatively convenient, which is conducive to a tighter winding 512, improving the motor slot full rate, reducing resistance and loss, and thus improving the power density of the disc motor 100, and is also conducive to automated mass production.

[0057] Please also refer to Figure 5 and Figure 6 In some embodiments, the stator core 511 is formed by radial laminations along the rotating shaft 30 .

[0058] Among them, the radial direction of the rotating shaft 30 is Figure 6 Y direction shown.

[0059] It can be understood that each piece of the stator core 511 can be obtained by punching; each piece of the stator core 511 can also be obtained by cutting, for example, mechanical cutting, wire cutting, laser cutting, etc.

[0060] Please also refer to Figure 6 and Figure 7 In some embodiments, the stator core 511 includes a stator yoke 5111 and stator teeth 5112, and the two stator yokes 5111 of two adjacent stator cores 511 abut against each other in the circumferential direction of the rotating shaft 30; the width of the outer end 51111 of the stator yoke 5111 in the circumferential direction of the rotating shaft 30 is greater than the width of the inner end 51112 of the stator yoke 5111 in the circumferential direction of the rotating shaft 30.

[0061] The stator core 511 is fixed on the inner wall surface of the housing 20 through a stator yoke 5111 , and the winding 512 is wound on the stator teeth 5112 .

[0062] It should be noted that the width of the stator teeth 5112 in the circumferential direction of the rotating shaft 30 is smaller than the width of the stator yoke 5111 in the circumferential direction of the rotating shaft 30; thus, when the winding 512 is wound on the stator teeth 5112, the winding 512 will not protrude from the stator yoke 5111 in the circumferential direction of the rotating shaft 30.

[0063] Among them, the outer end 51111 of the stator yoke 5111 and the inner end 51112 of the stator yoke 5111 are arranged in the radial direction of the rotating shaft 30; the outer end 51111 of the stator yoke 5111 is the end of the stator yoke 5111 away from the axis of the rotating shaft 30 in the radial direction of the rotating shaft 30, and the inner end 51112 of the stator yoke 5111 is the end of the stator yoke 5111 close to the axis of the rotating shaft 30 in the radial direction of the rotating shaft 30.

[0064] By making the width of the outer end 51111 of the stator yoke 5111 in the circumferential direction of the rotating shaft 30 larger than the width of the inner end 51112 of the stator yoke 5111 in the circumferential direction of the rotating shaft 30, after multiple stator yokes 5111 are arranged along the circumference of the rotating shaft 30, the length of the outer circle formed by the multiple outer ends 51111 is larger than the length of the inner circle formed by the multiple inner ends 51112. By reasonably setting the circumferential dimensions of the outer ends 51111 and the inner ends 51112 and the number of stator cores 511, the multiple stator cores 511 can be arranged along the circumferential direction to form a compact annular structure, thereby effectively utilizing the space. That is, only one stator core 511 can be designed to assemble a ring-shaped stator 50.

[0065] In other embodiments, the width of the outer end 51111 of a portion of the stator yoke 5111 in the circumferential direction of the rotating shaft 30 is equal to the width of the inner end 51112 thereof in the circumferential direction of the rotating shaft 30, and the width of the outer end 51111 of a portion of the stator yoke 5111 in the circumferential direction of the rotating shaft 30 is greater than the width of the inner end 51112 thereof in the circumferential direction of the rotating shaft 30. In this way, the stator yoke 5111 with the same width of the outer end 51111 and the inner end 51112 and the stator yoke 5111 with the outer end 51111 greater than the inner end 51112 are alternately arranged to form a ring-shaped stator 50.

[0066] Please refer to Figure 6 In some embodiments, the cross-sectional shape of the stator yoke 5111 in the axial direction perpendicular to the rotating shaft 30 is a trapezoid.

[0067] Optionally, the shape of the stator yoke 5111 is an isosceles trapezoid, that is, in an annular structure formed by multiple stator yokes 5111 arranged along the circumference of the rotating shaft 30, when observed along the axial direction of the rotating shaft 30, the inner and outer sides of the annular structure are both regular polygons.

[0068] In this embodiment, the shape of the stator yoke 5111 is designed to be trapezoidal, so that the end surface of the outer end 51111 of the stator yoke 5111 and the end surface of the inner end 51112 of the stator yoke 5111 are both planes, which is beneficial to the processing of the stator yoke 5111.

[0069] In other embodiments, the shape of the stator yoke 5111 can be designed to be fan-shaped, that is, the end face of the outer end 51111 of the stator yoke 5111 and the end face of the inner end 51112 of the stator yoke 5111 are both arc surfaces; or, the end face of the outer end 51111 of the stator yoke 5111 is an arc surface, and the end face of the inner end 51112 of the stator yoke 5111 is a plane; or, the end face of the outer end 51111 of the stator yoke 5111 is a plane, and the end face of the inner end 51112 of the stator yoke 5111 is an arc surface.

[0070] Please also refer to Figure 3 , Figure 6 and Figure 7 In some embodiments, a positioning protrusion 51113 is provided on the stator yoke 5111 , and a positioning recess 211 which is positioned and matched with the positioning protrusion 51113 is provided on the housing 20 .

[0071] Optionally, the positioning protrusion 51113 is protruded on the side of the stator yoke 5111 facing away from the stator teeth 5112, and the positioning recess 211 is recessed on the inner wall surface of the housing 20 in the axial direction of the rotating shaft 30. Of course, the positioning protrusion 51113 can also be protruded on the side of the stator yoke 5111 in the radial direction of the rotating shaft 30, and the positioning recess 211 is recessed on the inner wall surface of the housing 20 in the radial direction of the rotating shaft 30.

[0072] Optionally, a plurality of positioning protrusions 51113 and positioning recesses 211 are arranged at intervals along the circumference of the rotating shaft 30 .

[0073] The positioning protrusion 51113 and the positioning recess 211 are positioned and matched, which facilitates the stator yoke 5111 to be installed on the inner wall surface of the outer shell 20, while ensuring the installation accuracy of the stator yoke 5111 on the outer shell 20.

[0074] In other embodiments, a positioning recess 211 may be provided on the stator yoke 5111 , and a positioning protrusion 51113 that is positioned and matched with the positioning recess 211 may be provided on the housing 20 .

[0075] Please also refer to Figure 3 and Figure 7 In some embodiments, the housing 20 is provided with a positioning recess 211 on the axial inner wall surface of the rotating shaft 30, and the stator yoke 5111 is provided with a positioning protrusion 51113 on the side facing away from the stator teeth 5112. The positioning protrusion 51113 is located at the edge of the stator yoke 5111 in the circumferential direction of the rotating shaft 30, and the two positioning protrusions 51113 abutting against each other on two adjacent stator yokes 5111 are positioned and matched with the same positioning recess 211.

[0076] Optionally, each stator yoke 5111 is provided with two positioning protrusions 51113 on the side facing away from the stator teeth 5112, and the two positioning protrusions 51113 are respectively located on the two side edges of the stator yoke 5111 in the circumferential direction of the rotating shaft 30, and the two positioning protrusions 51113 abutting against each other on any two adjacent stator yokes 5111 are positioned and matched with the same positioning recess 211. In this case, the number of positioning recesses 211 is the same as the number of stator yokes 5111.

[0077] Optionally, each stator yoke 5111 is provided with a positioning protrusion 51113 on the side facing away from the stator tooth 5112, and the positioning protrusion 51113 is located at one side edge of the stator yoke 5111 in the circumferential direction of the rotating shaft 30. The two positioning protrusions 51113 abutting against each other on some adjacent stator yokes 5111 are positioned and matched with the same positioning recess 211. In this case, the number of positioning recesses 211 is half the number of stator yokes 5111.

[0078] The two positioning protrusions 51113 on the two stator yokes 5111 are positioned simultaneously through a positioning recess 211 to ensure the relative position accuracy of the two adjacent stator yokes 5111 and further ensure the installation accuracy of the stator yoke 5111 on the housing 20.

[0079] In other embodiments, a positioning protrusion 51113 is provided on the side of the stator yoke 5111 facing away from the stator teeth 5112 , and the positioning protrusion 51113 is located in the middle position or close to the middle position of the stator yoke 5111 in the circumferential direction of the rotating shaft 30 .

[0080] Please also refer to Figure 3 and Figure 7 In some embodiments, a first fixing hole 212 is provided on the housing 20, a second fixing hole 51114 is provided on the stator yoke 5111, and the stator yoke 5111 is fixed to the housing 20 by fasteners.

[0081] Optionally, the first fixing hole 212 is a screw through hole, the second fixing hole 51114 is a threaded hole, and the fastener is a fastening screw, which passes through the screw through hole and is screwed into the threaded hole to fix the stator yoke 5111 to the housing 20.

[0082] When the positioning protrusion 51113 is located at the edge of the stator yoke 5111 in the circumferential direction of the rotating shaft 30 , the second fixing hole 51114 may be located in the middle position or close to the middle position of the stator yoke 5111 to avoid interference with the positioning protrusion 51113 .

[0083] Optionally, two, three or more second fixing holes 51114 are arranged at intervals in the radial direction of the rotating shaft 30 to ensure the stability of the stator yoke 5111 fixed to the housing 20. The first fixing holes 212 and the second fixing holes 51114 are arranged one by one.

[0084] The stator yoke 5111 is fixed to the housing 20 by fasteners, which facilitates the installation and disassembly of the stator yoke 5111.

[0085] Please also refer to Figure 3 and Figure 7 In some embodiments, the positioning recess 211 and the positioning protrusion 51113 are both strip-shaped structures.

[0086] Optionally, the positioning recess 211 and the positioning protrusion 51113 both extend in the radial direction of the rotating shaft 30 to fully utilize the radial space. Of course, the positioning recess 211 and the positioning protrusion 51113 can also both extend in the circumferential direction of the rotating shaft 30.

[0087] In the radial direction of the rotating shaft 30 , the length of the positioning recess 211 is greater than the length of the positioning protrusion 51113 , so as to facilitate the positioning protrusion 51113 to enter the positioning recess 211 .

[0088] In other embodiments, the positioning recess 211 may be a circular groove, a polygonal groove or a special-shaped groove, and correspondingly, the positioning protrusion 51113 may be a circular bump, a polygonal bump or a special-shaped bump.

[0089] Please refer to Figure 2 In some embodiments, the rotor 40 is provided with stators 50 on both axial sides of the rotating shaft 30 .

[0090] It can be understood that the stators 50 are fixed on the inner wall surfaces on both sides of the housing 20 respectively, that is, the disc motor 100 is a double-stator single-rotor disc motor.

[0091] In other embodiments, the rotor 40 is provided with a stator 50 on one axial side of the rotating shaft 30 , which can be understood as the stator 50 being fixed on one inner wall surface of the housing 20 , that is, the disc motor 100 is a single-stator single-rotor disc motor.

[0092] Please also refer to Figures 8 to 10 In some embodiments, the rotor 40 includes a rotor bracket 41, a plurality of rotor magnets 42 and a limiter 43. The rotor bracket 41 is provided with a plurality of slots 411 spaced apart along its circumferential direction. The plurality of rotor magnets 42 are respectively inserted into the plurality of slots 411 along the radial direction of the rotor bracket 41. The limiter 43 is provided on the rotor bracket 41 to prevent the rotor magnets 42 from escaping from the slots 411 along the radial direction of the rotor bracket 41.

[0093] The clamping groove 411 is disposed through the rotor support 41 in the axial direction.

[0094] Optionally, a clamping recess 4111 is provided on the slot wall of the clamping slot 411, and a clamping protrusion 421 is provided on the rotor magnetic steel 42 to be clamped with the clamping recess 4111; when the rotor magnetic steel 42 is inserted into the clamping slot 411, the clamping protrusion 421 enters the clamping recess 4111 to limit the axial movement of the rotor magnetic steel 42 along the rotor bracket 41. Of course, the clamping protrusion 421 can also be provided on the slot wall of the clamping slot 411, and the clamping recess 4111 can be provided on the rotor magnetic steel 42.

[0095] It can be understood that when the two opposite side walls of the slot 411 and the slot bottom wall are both provided with the engaging recesses 4111, the rotor magnet 42 can be provided with the engaging protrusions 421 only on the two opposite side walls in the circumferential direction of the shaft 30; or, the rotor magnet 42 can be provided with the engaging protrusions 421 on the two opposite side walls in the circumferential direction of the shaft 30 and the side wall facing the slot bottom wall of the slot 411. When the slot 411 is provided with the engaging recesses 4111 only on the two opposite side walls, the rotor magnet 42 can be provided with the engaging protrusions 421 only on the two opposite side walls in the circumferential direction of the shaft 30.

[0096] After the rotor magnet 42 is inserted into the slot 411 , the limiting member 43 limits the rotor magnet 42 in the radial direction of the rotor bracket 41 , so that the rotor magnet 42 and the rotor bracket 41 are closely matched, thereby preventing the rotor magnet 42 from escaping from the slot 411 .

[0097] Please refer to Fig. 9 In some embodiments, the limiting member 43 is a limiting ring provided on the outer circumference of the rotor support 41 .

[0098] It can be understood that the limiting ring can be formed by a strap wrapped around the outer circumference of the rotor bracket 41; or, the limiting ring is a clamp structure, and the limiting ring is clamped to the outer circumference of the rotor bracket 41 by fasteners; or, the limiting ring is a metal ring, which expands due to heat and is sleeved on the outer circumference of the rotor bracket 41, and is clamped to the outer circumference of the rotor bracket 41 after cooling.

[0099] By designing the limiting member 43 as a limiting ring, the rotor magnetic steel 42 can be better limited, and it is also convenient to install the limiting member 43 on the rotor bracket 41.

[0100] In other embodiments, the limiting member 43 may be a limiting plate fixed (by means of but not limited to welding, fastener connection, etc.) to the notch of the slot 411 .

[0101] Please also refer to Figure 1 and Figure 2 In some embodiments, the disk motor 100 further includes a support shaft 10 passing through the housing 20 and connected to the housing 20 , and the rotating shaft 30 is rotatably installed between the support shaft 10 and the housing 20 .

[0102] It is understood that the housing 20 can be fixedly connected to the support shaft 10, for example, the housing 20 is fixed to the support shaft 10 by welding, fastener connection, etc.; or, the housing 20 can also be integrally formed with the support shaft 10. The support shaft 10 is used to be fixedly connected to the vehicle body to achieve relative fixation of the housing 20 and the vehicle body.

[0103] A first bearing 60 may be disposed between the rotating shaft 30 and the supporting shaft 10 to facilitate the rotation of the rotating shaft 30 relative to the supporting shaft 10 .

[0104] In other embodiments, the support shaft 10 may not be provided, and the housing 20 may be directly fixedly connected to the vehicle body.

[0105] Please also refer to Figure 1 and Figure 2 In some embodiments, the housing 20 includes a first half shell 21 and a second half shell 22, and the first half shell 21 and the second half shell 22 are fixedly connected, which can be but not limited to welding, fastener connection, etc.

[0106] Among them, a first through hole is provided on the first half shell 21, and a second through hole is provided on the second half shell 22. The support shaft 10 passes through the first through hole and the second through hole in sequence, and the second half shell 22 is fixed on the support shaft 10 (which can be but not limited to welding, fastener connection, one-piece molding, etc.); an annular space is formed between the support shaft 10 and the first half shell 21, a part of the rotating shaft 30 is in the annular space, and the other part of the rotating shaft 30 extends out of the first half shell 21.

[0107] Optionally, the radial edge of the first half shell 21 is provided with a first flange, and the radial edge of the second half shell 22 is provided with a second flange, and the first half shell 21 and the second half shell 22 are fixedly connected by the cooperation of the first flange and the second flange. Of course, the first flange can also be provided only on the radial edge of the first half shell 21, and the second half shell 22 is a flat plate structure as a whole; or, the second flange can also be provided only on the radial edge of the second half shell 22, and the first half shell 21 is a flat plate structure as a whole.

[0108] Among them, when the stator 50 is provided on only one side of the rotor 40, the stator 50 can be fixed on the inner wall surface of the first half shell 21 or the inner wall surface of the second half shell 22; when the stator 50 is provided on both sides of the rotor 40, the stator 50 can be fixed on the inner wall surface of the first half shell 21 and the inner wall surface of the second half shell 22 respectively.

[0109] Optionally, the housing 20 further includes a plurality of heat sinks 23 , which are disposed on the outer wall surfaces of the first half shell 21 and the second half shell 22 . The heat sinks 23 are not only beneficial to heat dissipation of the disc motor 100 , but also can increase the structural strength of the housing 20 .

[0110] The second aspect of the present application provides a vehicle. The vehicle includes a disc motor 100 as in the first aspect, wherein a support shaft 10 of the disc motor 100 is fixedly connected to a vehicle body, and a rotating shaft 30 of the disc motor 100 is fixedly connected to a wheel hub. When the stator 50 is powered on, the rotor 40, the rotating shaft 30 and the wheel hub rotate together to realize the movement of the vehicle.

[0111] The vehicle adopts all the embodiments of the above-mentioned disc motor 100, and thus has all the beneficial effects of the above-mentioned embodiments, which will not be described one by one here.

[0112] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A disc motor, characterized in that: The invention comprises a housing, a rotating shaft, a rotor and a stator. The rotating shaft is rotatably mounted on the housing. The rotor is located in the housing and fixed on the rotating shaft. The stator is fixed on the axial inner wall surface of the housing. The stator comprises a plurality of stator segments arranged along the circumference of the rotating shaft. The stator segments comprise a stator core and a winding wound on the stator core. The stator core is a laminated structure.

2. The disc motor according to claim 1, characterized in that: The stator core is formed by radial laminations along the rotating shaft.

3. The disc motor according to claim 1, characterized in that: The stator core includes a stator yoke and stator teeth, and the two stator yokes of two adjacent stator cores abut against each other in the circumferential direction of the rotating shaft; the width of the outer end of the stator yoke in the circumferential direction of the rotating shaft is greater than the width of the inner end of the stator yoke in the circumferential direction of the rotating shaft.

4. The disc motor according to claim 3, characterized in that: The cross-sectional shape of the stator yoke in the axial direction perpendicular to the rotating shaft is trapezoidal or fan-shaped.

5. The disc motor according to claim 3, characterized in that: A positioning protrusion is provided on one of the stator yoke and the housing, and a positioning recess that is positioned and matched with the positioning protrusion is provided on the other of the stator yoke and the housing.

6. The disc motor according to claim 5, characterized in that: The outer shell is provided with a positioning recess on the axial inner wall surface of the rotating shaft, and the stator yoke is provided with a positioning protrusion on the side facing away from the stator teeth. The positioning protrusion is located at the edge of the stator yoke in the circumferential direction of the rotating shaft, and the two positioning protrusions abutting against each other on two adjacent stator yokes are positioned and matched with the same positioning recess.

7. The disc motor according to claim 5, characterized in that: The positioning concave portion and the positioning convex portion are both strip-shaped structures.

8. The disc motor according to any one of claims 1 to 7, characterized in that: The stator is disposed on both axial sides of the rotating shaft.

9. The disc motor according to any one of claims 1 to 7, characterized in that: The rotor includes a rotor support, a plurality of rotor magnets and a limiter. The rotor support is provided with a plurality of slots spaced apart along its circumferential direction. A clamping protrusion is provided on the slot wall of the clamping slot and on one of the rotor magnets. A clamping recess is provided on the slot wall of the clamping slot and on the other of the rotor magnets. The clamping protrusion and the clamping recess are clamped together to limit the axial movement of the rotor magnet along the rotor support. The limiter is provided on the rotor support to prevent the rotor magnet from escaping from the slot in the radial direction of the rotor support.

10. The disc motor according to claim 9, characterized in that: The limiting member is a limiting ring arranged on the outer peripheral surface of the rotor bracket.

11. The disc motor according to any one of claims 1 to 7, characterized in that: The disk motor further includes a support shaft passing through the housing and connected to the housing, and the rotating shaft is rotatably installed between the support shaft and the housing.

12. A vehicle, characterized in that: It comprises a disc motor as claimed in any one of claims 1 to 11.

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