Stator, motor and vehicle

Abstract

The invention discloses a stator, a motor and a vehicle, the stator comprises a ring body and a tooth block, one of the ring body and the tooth block is provided with a matching groove, the other of the ring body and the tooth block is provided with a matching part matched in the matching groove, and the notch of the matching groove is a necking opening to limit the matching part to be separated from the matching groove. At least one of the groove wall of the matching groove and the matching part is provided with a supporting part, and the supporting part is supported between the groove wall and the matching part so that the matching part can abut against the groove wall and be locked in the matching groove in an internal expansion mode. The assembling stability of the ring body and the tooth blocks of the stator is good, the situation that the tooth blocks are prone to loosening in the related technology is avoided, and then the problems that due to loosening, operation noise is large, and motor efficiency is low are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a stator, a motor and a vehicle. Background Art

[0002] The wheel hub motor is a type of motor that integrates the power system, transmission system, and brake system into one. The wheel hub motor can omit a large number of transmission components, thereby simplifying the overall vehicle. Secondly, the wheel hub motor can also realize a variety of complex driving modes, thereby meeting the actual use needs of the vehicle.

[0003] At present, most of the driving motors of two-wheeled vehicles are hub motors. In order to improve the problems of high iron loss, small maximum magnetic flux, low motor efficiency, and increased motor temperature of the hub motor stator, some hub motor stators in the related art adopt a design that separates the stator tooth block and the stator ring body. However, the stator tooth block and the stator ring body in the related art have problems such as poor assembly stability, easy loosening, and high operating noise. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention provides a stator, the assembly stability of the stator ring body and the tooth block is good, avoiding the situation in the related art that the tooth block is easy to loosen, and further avoiding the problems of high operating noise and low motor efficiency caused by looseness.

[0006] An embodiment of the present invention further provides a motor including the above-mentioned stator.

[0007] An embodiment of the present invention further provides a vehicle including the above motor.

[0008] The stator of the embodiment of the present invention comprises a ring body and a tooth block, wherein one of the ring body and the tooth block is provided with a matching groove, and the other is provided with a matching portion matched in the matching groove, and the notch of the matching groove is a constricted opening to limit the matching portion from coming out of the matching groove;

[0009] At least one of the groove wall of the matching groove and the matching portion is provided with a supporting top portion, and the supporting top portion supports between the groove wall and the matching portion so that the matching portion abuts against the groove wall and expands and locks in the matching groove.

[0010] In some embodiments, the groove wall is provided with a first supporting top portion, and the matching portion is provided with a second supporting top portion, and the first supporting top portion and the second supporting top portion are both supported between the groove wall and the matching portion.

[0011] In some embodiments, the groove wall of the mating groove includes a groove bottom wall, the mating portion is provided with an inner end face facing the inner side of the ring body, the groove bottom wall and the inner end face are arranged relatively to each other in the radial direction of the ring body, the first support top portion is provided on the groove bottom wall, the second support top portion is provided on the inner end face, and the first support top portion and the second support top portion are both supported between the groove bottom wall and the inner end face.

[0012] In some embodiments, the groove wall and the matching portion are both provided with a sheet-like structure, and the first supporting top portion and the second supporting top portion are both formed by bending the sheet-like structure.

[0013] In some embodiments, both the first supporting top portion and the second supporting top portion are bent along the axial direction of the ring body, and the bending direction of the first supporting top portion is opposite to the bending direction of the second supporting top portion.

[0014] In some embodiments, the groove wall or the matching portion is provided with a recess, the recess extends along the axial direction of the ring body, and the sheet structure is provided in the recess and bent in the recess.

[0015] In some embodiments, the first supporting top portion and the second supporting top portion are staggered in the circumferential direction of the ring body;

[0016] and / or, at least one of the first supporting top portion and the second supporting top portion is provided in plurality;

[0017] And / or, the number of the first supporting top portions is greater than the number of the second supporting top portions.

[0018] In some embodiments, the groove wall and the matching portion are provided with convex portions, and when the matching portion is assembled into the matching groove, the convex portions press against the supporting top portion to drive the supporting top portion to bend.

[0019] In some embodiments, the mating groove penetrates the ring body along the axial direction of the ring body and is connected with the outer peripheral wall of the ring body, and the width dimensions of the mating groove and the mating portion in the circumferential direction of the ring body both show a decreasing trend from the inside to the outside of the ring body.

[0020] In some embodiments, the matching groove includes two groove side walls arranged opposite to each other in the circumferential direction of the ring body, and the matching portion includes two side wall surfaces arranged opposite to each other in the circumferential direction of the ring body;

[0021] When the supporting top portion is supported between the groove wall and the matching portion, the two groove side walls are respectively in contact with the two side wall surfaces to restrict the matching portion from falling out of the matching groove.

[0022] In some embodiments, the ring body includes a plurality of ring layer groups stacked in the axial direction of the ring body, each of the ring layer groups includes a plurality of ring layers stacked in the axial direction, and the matching groove penetrates the plurality of ring layer groups along the axial direction.

[0023] In some embodiments, the supporting top portion is disposed on one of the plurality of the circle layers of each of the circle layer groups, and the supporting top portions of the plurality of the circle layer groups are arranged at intervals along the axial direction.

[0024] In some embodiments, there are multiple mating grooves, and the multiple mating grooves are divided into multiple groove groups arranged at intervals along the circumference of the ring body. Each of the groove groups includes multiple mating grooves arranged at intervals along the circumference of the ring body, and the support top parts in the multiple mating grooves in the same groove group are staggered along the axial direction.

[0025] In some embodiments, the tooth block includes a tooth portion, which includes a plurality of tooth layer groups stacked in the axial direction of the ring body, each of the tooth layer groups includes a plurality of tooth layers stacked in the axial direction, one of the plurality of tooth layers of each tooth layer group is provided with the support top portion, and the support top portions of the plurality of tooth layer groups are arranged at intervals along the axial direction.

[0026] In some embodiments, the tooth block further comprises:

[0027] The tooth portion includes a first tooth segment and a second tooth segment, the first tooth segment is connected to one end of the second tooth segment, the matching portion is connected to the other end of the second tooth segment, and the insulating layer is sleeved on the outer peripheral side of the second tooth segment.

[0028] The coil is sleeved on the outer peripheral side of the insulating layer.

[0029] In some embodiments, the width dimension of the first tooth segment is greater than the width dimension of the second tooth segment, and in the circumferential direction of the coil body, the spacing between the first tooth segments of two adjacent tooth blocks is less than the radial dimension of the center line of the coil;

[0030] And / or, the tooth portions are parallel teeth or trapezoidal teeth.

[0031] The motor according to the embodiment of the present invention includes the stator as described in any one of the above embodiments.

[0032] The vehicle according to the embodiment of the present invention includes the motor as described in any one of the above embodiments.

[0033] Beneficial effects: The stator, motor and vehicle of the embodiments of the present invention have good assembly stability of the stator ring body and the gear block, avoiding the situation in the related art where the gear block is easily loosened, thereby avoiding the problems of high operating noise and low motor efficiency caused by looseness. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Schematic diagram of the overall structure of the stator according to an embodiment of the present invention.

[0035] Figure 2 It is a top view of the stator of an embodiment of the present invention and a partial enlarged schematic diagram of the matching slot.

[0036] Figure 3 It is a schematic diagram of the assembly of the ring body and a single gear block according to an embodiment of the present invention.

[0037] Figure 4 yes Figure 3 A local enlarged schematic diagram of point A in the middle.

[0038] Figure 5 1 is a schematic diagram of a circle body and a partial enlargement of an embodiment of the present invention.

[0039] Figure 6 Schematic diagram of the distribution of the groove groups on the ring body of the embodiment of the present invention.

[0040] Figure 7 yes Figure 6 A local enlarged schematic diagram of point B in the middle.

[0041] Figure 8 Schematic diagram of a tooth portion according to an embodiment of the present invention.

[0042] Fig. 9 Schematic diagram of an exploded view of a gear block according to an embodiment of the present invention.

[0043] Reference numerals:

[0044] 1- ring body; 11- matching groove; 111- groove bottom wall; 112- groove side wall; 12- groove group;

[0045] 2-tooth block; 21-matching part; 211-inner end surface; 212-side wall surface; 22-tooth portion; 221-tooth layer group; 2211-tooth layer; 222-first tooth segment; 223-second tooth segment; 23-insulating layer; 24-coil;

[0046] 3-support top; 31-first support top; 32-second support top;

[0047] 4- Lamellar structure;

[0048] 5-concave part; 6-convex part;

[0049] 7-circle group; 71-circle; 711-first circle; 712-second circle; 713-third circle. DETAILED DESCRIPTION

[0050] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0051] like Figure 1 As shown, the stator of the embodiment of the present invention comprises a ring body 1 and a tooth block 2, one of which is provided with a matching groove 11, and the other is provided with a matching portion 21 matched in the matching groove 11.

[0052] For example, Figures 1 to 3 As shown, the ring body 1 can be generally an annular structure, and the ring body 1 can serve as the yoke part of the stator when in use. A plurality of matching grooves 11 can be provided on the outer peripheral side of the ring body 1, and the plurality of matching grooves 11 can be arranged at equal intervals along the circumference of the ring body 1, and the plurality of matching grooves 11 are all provided on the outer peripheral side of the ring body 1, that is, the groove depth direction of each matching groove 11 can be arranged along the radial direction of the ring body 1, and the notch of each matching groove 11 can be connected to the outer peripheral wall of the ring body 1.

[0053] like Figure 1 As shown, the gear block 2 as a whole can be a block-shaped structure, the gear block 2 can be a tooth-shaped plane in a plane perpendicular to the axial direction, and the gear block 2 can be arranged along the radial extension of the ring body 1. The matching portion 21 can be integrally formed on the gear block 2, and during assembly, the matching portion 21 of the gear block 2 can be embedded in the corresponding matching groove 11 along the axial direction, thereby facilitating the assembly of the gear block 2 and the ring body 1. Specifically, a plurality of gear blocks 2 can be provided, and each gear block 2 can be assembled in the above-mentioned plurality of matching grooves 11 one by one through the corresponding matching portion 21.

[0054] At least one of the groove wall of the matching groove 11 and the matching portion 21 is provided with a supporting top portion 3 , which supports between the groove wall and the matching portion 21 so that the matching portion 21 abuts against the groove wall and expands and locks in the matching groove 11 .

[0055] For example, Figure 2 As shown, the support top portion 3 can be only arranged on the groove wall of the matching groove 11, and the support top portion 3 can be a spring-shaped structure or the like. When the matching portion 21 is pressed into the matching groove 11, the support top portion 3 will be bent and deformed under the action of the matching portion 21, and due to the elastic action of the support top portion 3 itself, the support top portion 3 can be supported between the groove wall and the matching portion 21. For example, the support top portion 3 can apply a force along the radial direction between the groove wall and the matching portion 21. Under the action of this force, a part of the wall surface of the matching portion 21 can abut against the corresponding groove wall of the matching groove 11, and the corresponding groove wall will apply a reaction force to the matching portion 21 that is opposite to the force applied by the support top portion 3. Under the joint action of this pair of action and reaction forces, the matching portion 21 can be internally expanded and locked in the matching groove 11, thereby ensuring the structural stability of the assembly of the matching portion 21.

[0056] In the stator of the embodiment of the present invention, a supporting top portion 3 is provided between the ring body 1 and the tooth block 2. Under the action of the supporting top portion 3, the ring body 1 and the tooth block 2 can be assembled and fixed by means of internal expansion locking, so that the assembly stability of the ring body 1 and the tooth block 2 is good, and the situation in which the tooth block 2 is easy to loose in the related art is avoided, thereby avoiding the problems of high operating noise and low motor efficiency caused by looseness.

[0057] In some embodiments, the groove wall is provided with a first supporting top portion 31 , and the matching portion 21 is provided with a second supporting top portion 32 . Both the first supporting top portion 31 and the second supporting top portion 32 are supported between the groove wall and the matching portion 21 .

[0058] For example, Figure 4 As shown, the first supporting top portion 31 can be integrally formed on the groove wall of the matching groove 11, and the second supporting top portion 32 can be integrally formed on the corresponding outer wall surface of the matching portion 21. When the matching portion 21 is assembled into the matching groove 11, the first supporting top portion 31 and the second supporting top portion 32 will be bent and deformed and both support between the matching portion 21 and the groove wall of the matching groove 11. Thus, the supporting effect between the matching portion 21 and the groove wall is fully guaranteed, thereby ensuring the internal expansion locking effect.

[0059] In some embodiments, the groove wall of the mating groove 11 includes a groove bottom wall 111, the mating portion 21 is provided with an inner end face 211 facing the inner side of the ring body 1, the groove bottom wall 111 and the inner end face 211 are arranged relative to each other in the radial direction of the ring body 1, the first supporting top part 31 is provided on the groove bottom wall 111, the second supporting top part 32 is provided on the inner end face 211, and the first supporting top part 31 and the second supporting top part 32 are both supported between the groove bottom wall 111 and the inner end face 211.

[0060] For example, Figure 4 As shown, the notch of the matching groove 11 can face the outside of the ring body 1, and the groove bottom wall 111 is the groove wall portion of the matching groove 11 arranged opposite to the notch. The inner end surface 211 of the matching portion 21 can be the surface of the matching portion 21 facing the inner side of the ring body 1. The first supporting top portion 31 can be integrally formed on the groove bottom wall 111, and the second supporting top portion 32 can be integrally formed on the inner end surface 211 of the matching portion 21.

[0061] When the matching portion 21 is assembled into the matching groove 11, the groove bottom wall 111 will be arranged opposite to the inner end face 211 in the radial direction of the ring body 1, and the first supporting top portion 31 and the second supporting top portion 32 will be deformed due to the extrusion of the groove bottom wall 111 and the inner end face 211, and the first supporting top portion 31 and the second supporting top portion 32 will be supported between the groove bottom wall 111 and the inner end face 211, and the notch of the matching groove 11 can be a shrinking structure, which avoids the matching portion 21 from escaping from the notch of the matching groove 11, and also makes the arrangement of the first supporting top portion 31 and the second supporting top portion 32 meet the actual assembly needs, thereby ensuring the structural stability of the assembly of the matching portion 21 and the matching groove 11.

[0062] In some embodiments, the groove wall and the matching portion 21 are both provided with a sheet structure 4, and the first supporting top portion 31 and the second supporting top portion 32 are both formed by bending the sheet structure 4. Figure 4 As shown, the sheet structure 4 can be roughly rectangular sheet-shaped. Before assembly, the sheet structure 4 can extend along the radial direction of the ring body 1. When the matching portion 21 is assembled into the corresponding matching groove 11, the sheet structure 4 will be squeezed and bent due to the extrusion effect during the assembly process, so that the sheet structure 4 can fill and support between the above-mentioned groove bottom wall 111 and the inner end surface 211 of the matching portion 21, and the bent sheet structure 4 constitutes the above-mentioned first supporting top portion 31 or the second supporting top portion 32, thereby facilitating the molding of the first supporting top portion 31 and the second supporting top portion 32, and also ensuring that the first supporting top portion 31 and the second supporting top portion 32 have a better supporting effect.

[0063] In some embodiments, the first supporting top portion 31 and the second supporting top portion 32 are both bent along the axial direction of the ring body 1 , and the bending direction of the first supporting top portion 31 is opposite to the bending direction of the second supporting top portion 32 .

[0064] For example, Figure 4 As shown, the mating portion 21 can be assembled into the mating groove 11 from top to bottom. During the assembly process, the first supporting top portion 31 can be arranged adjacent to the top side of the ring body 1, and the first supporting top portion 31 can be bent downward, and the second supporting top portion 32 can be arranged adjacent to the bottom side of the gear block 2, and the second supporting top portion 32 can be bent upward.

[0065] Therefore, on the one hand, the first support top portion 31 and the second support top portion 32 will gradually bend and deform into place during the process of the mating portion 21 being gradually assembled into the mating groove 11, which fully meets the assembly requirements. On the other hand, since the bending directions of the first support top portion 31 and the second support top portion 32 are opposite, the ineffective component forces of the first support top portion 31 and the second support top portion 32 can also be offset, thereby fully ensuring the overall internal expansion locking effect.

[0066] In some embodiments, the groove wall or the matching portion 21 is provided with a recess 5 , the recess 5 extends along the axial direction of the ring body 1 , and the sheet structure 4 is disposed in the recess 5 and bent in the recess 5 .

[0067] For example, Figure 4 As shown, the recess 5 can be generally a rectangular groove, and the recess 5 can be arranged along the axial extension of the ring body 1. The sheet structure 4 can be integrally formed in the recess 5, and in the process of assembling the matching portion 21 to the matching groove 11, the sheet structure 4 can be bent and deformed along the recess 5. The arrangement of the recess 5 can provide a deformation space for the sheet structure 4, thereby facilitating the bending deformation of the sheet structure 4 during assembly.

[0068] In some embodiments, the first supporting portion 31 and the second supporting portion 32 are arranged in a staggered manner in the circumferential direction of the ring body 1. Figure 4 As shown, the first support top portion 31 and the second support top portion 32 are arranged non-oppositely in the radial direction of the ring body 1, thereby allowing the first support top portion 31 and the second support top portion 32 to be staggered during bending deformation, thereby avoiding bending contact and interference between the two, and the first support top portion 31 and the second support top portion 32 can fully utilize the gap space between the groove bottom wall 111 and the inner end surface 211, thereby avoiding the situation where the gap between the groove bottom wall 111 and the inner end surface 211 is easily increased when the first support top portion 31 and the second support top portion 32 are opposite, which is beneficial to further improve the structural stability of the assembly.

[0069] In some embodiments, at least one of the first supporting portion 31 and the second supporting portion 32 is provided in plurality. Figure 4 As shown, the first supporting top portion 31 may be provided with two or more, and in some other embodiments, the first supporting top portion 31 may be provided with three or four or more, so as to improve the supporting effect. In other embodiments, the second supporting top portion 32 may also be provided with two or three or more.

[0070] In some embodiments, the number of the first support parts 31 is greater than the number of the second support parts 32. Figure 4 As shown, two first supporting top portions 31 may be provided, and the two first supporting top portions 31 may be arranged at intervals in the circumferential direction of the ring body 1, and only one second supporting top portion 32 may be provided, and the second supporting top portion 32 may be located between the two first supporting top portions 31. Thus, the structural stability of the assembly can be improved.

[0071] In some embodiments, the groove wall and the matching portion 21 are provided with a protrusion 6 . When the matching portion 21 is assembled into the matching groove 11 , the protrusion 6 presses against the supporting top portion 3 to drive the supporting top portion 3 to bend.

[0072] For example, Figure 4As shown, the protrusion 6 can be integrally formed on the bottom wall 111 of the matching groove 11, and the protrusion 6 can be a block structure. When the matching part 21 is pressed into the matching groove 11, the protrusion 6 on the bottom wall 111 can abut against the second support top part 32 in the radial direction, thereby facilitating driving the second support top part 32 to bend and deform.

[0073] In some other embodiments, a convex portion 6 may also be provided on the inner end surface 211 of the matching portion 21 , and the convex portion 6 on the inner end surface 211 may abut against the first supporting top portion 31 , thereby facilitating the first supporting top portion 31 to bend and deform.

[0074] In some embodiments, the mating groove 11 penetrates the ring body 1 along the axial direction of the ring body 1 and is connected to the outer circumferential wall of the ring body 1. The width dimensions of the mating groove 11 and the mating portion 21 in the circumferential direction of the ring body 1 both decrease from the inside to the outside of the ring body 1.

[0075] For example, Figure 4 As shown, the matching groove 11 can be a dovetail groove, and the groove width of the matching groove 11 in the circumferential direction of the ring body 1 can gradually decrease along the direction from the inside to the outside of the ring body 1. The matching block can also be a dovetail block, and the width of the matching block in the circumferential direction of the ring body 1 can gradually decrease along the direction from the inside to the outside of the ring body 1.

[0076] Therefore, when the mating block is assembled into the mating groove 11, the mating block can be radially restricted in the mating groove 11, avoiding the situation where the mating block radially escapes from the mating groove 11, and also meeting the need for the mating block to be reversely restricted in the mating groove 11 under the supporting action of the supporting top part 3 for fixed use.

[0077] In some embodiments, Figure 4 As shown, the mating groove 11 includes two groove side walls 112 arranged opposite to each other in the circumferential direction of the ring body 1, and the two groove side walls 112 are generally arranged in an eight-shaped shape. The mating portion 21 includes two side wall surfaces 212 arranged opposite to each other in the circumferential direction of the ring body 1, and the two side wall surfaces 212 can also be generally arranged in an eight-shaped shape.

[0078] When the supporting top portion 3 is supported between the groove wall and the matching portion 21, the two groove side walls 112 are respectively in contact with the two side wall surfaces 212 to prevent the matching portion 21 from coming out of the matching groove 11. Specifically, when the matching portion 21 is assembled in the matching groove 11, the supporting top portion 3 can push the matching portion 21 outward from the inside of the matching portion 21, and due to the contact and abutment effect of the corresponding groove side walls 112 and the side wall surfaces 212, the matching portion 21 will be locked between the supporting top portion 3 and the corresponding groove side walls 112, thereby ensuring the structural stability of the assembly.

[0079] Secondly, since the two groove side walls 112 are arranged in an eight-shaped shape, the two groove side walls 112 also have a guiding function, so that the matching portion 21 can be close to the central axis of the matching groove 11, ensuring the assembly accuracy of the gear block 2 and the ring body 1.

[0080] In some embodiments, the ring body 1 includes a plurality of ring layer groups 7 stacked in the axial direction of the ring body 1 , each ring layer group 7 includes a plurality of ring layers 71 stacked in the axial direction, and the matching groove 11 penetrates the plurality of ring layer groups 7 along the axial direction.

[0081] For example, Figure 5 As shown, the ring body 1 may include a plurality of ring layer groups 7, each of which may be substantially annular and may be stacked and arranged in sequence along the axial direction of the ring body 1. Each ring layer group 7 may include three ring layers 71. In some other embodiments, each ring layer group 7 may also include two, four, five, or other number of ring layers 71. The ring layer 71 may specifically be an annular structure formed by silicon steel sheets.

[0082] Each ring layer group 7 may be provided with a plurality of matching grooves 11, which may be arranged at equal intervals along the circumference of the ring layer group 7, and the matching grooves 11 of the plurality of ring layer groups 7 may be arranged relatively and connected in the axial direction, thereby facilitating the processing and forming of the ring body 1.

[0083] In some embodiments, a supporting portion 3 is disposed on one of the plurality of circle layers 71 of each circle layer group 7 , and the supporting portions 3 of the plurality of circle layer groups 7 are spaced apart along the axial direction.

[0084] For example, each matching groove 11 of each ring layer group 7 may be provided with at least one supporting portion 3, for example, Figure 5 As shown, two supporting top portions 3 may be provided in a single matching groove 11 of each ring layer group 7, and the two supporting top portions 3 may be arranged at intervals in the circumferential direction of the ring body 1. It should be noted that the three ring layers 71 of each ring layer group 7 may be arranged in a butt joint from top to bottom, and the two supporting top portions 3 may be connected to the topmost ring layer 71 among the three ring layers 71.

[0085] like Figure 5 As shown, the axial direction of the ring body 1 can be the up and down direction, a plurality of ring layer groups 7 can be stacked and arranged in the up and down direction, the matching grooves 11 of the plurality of ring layer groups 7 can be arranged opposite to each other in the up and down direction to form a complete matching groove 11, and a plurality of supporting top portions 3 in the plurality of ring layer groups 7 located in the same matching groove 11 can be arranged at equal intervals along the up and down direction.

[0086] Therefore, after the tooth block 2 is assembled into the corresponding matching groove 11, the multiple support top parts 3 in the same matching groove 11 can be bent and deformed in the same direction. Since the support top part 3 is only connected to the topmost circle layer 71 of the three circle layers 71 in each circle layer group 7, the two lower circle layers 71 can form an avoidance, thereby facilitating the bending deformation of the support top part 3.

[0087] In some embodiments, there are multiple mating grooves 11, and the multiple mating grooves 11 are divided into multiple groove groups 12 arranged at intervals along the circumference of the ring body 1. Each groove group 12 includes multiple mating grooves 11 arranged at intervals along the circumference of the ring body 1, and the support top parts 3 in the multiple mating grooves 11 of the same groove group 12 are arranged in an axially staggered manner.

[0088] For example, Figure 6 As shown, each slot group 12 may include three matching slots 11 continuously distributed in the circumferential direction of the ring body 1, and multiple slot groups 12 may be arranged at equal intervals along the circumferential direction of the ring body 1. In some other embodiments, each slot group 12 may also include two, four, five, or other matching slots 11.

[0089] like Figure 7 As shown, the axial direction of the ring body 1 can be the up-down direction, and the ring layer group 7 can include three ring layers 71 stacked in the up-down direction. The three ring layers 71 can be the first ring layer 711, the second ring layer 712 and the third ring layer 713 in order from top to bottom.

[0090] Each groove group 12 may include three matching grooves 11 distributed continuously in the circumferential direction. Figure 7 As shown, the three matching grooves 11 of the same groove group 12 can be arranged at intervals along the left-right direction. The supporting top portion 3 in the matching groove 11 on the left can be connected to the first circle layer 711 at the top, the supporting top portion 3 in the matching groove 11 in the middle can be connected to the second circle layer 712 in the middle, and the supporting top portion 3 in the matching groove 11 on the right can be connected to the third circle layer 713 at the bottom.

[0091] During assembly, the supporting top portion 3 on the first circle layer 711 can be bent downward, the supporting top portion 3 on the second circle layer 712 can be bent upward or downward according to the assembly direction of the gear block 2, and the supporting top portion 3 on the third circle layer 713 can be bent upward.

[0092] The staggered arrangement and different bending directions of the supporting top portion 3 can offset the internal force components, thereby improving the overall structural stability.

[0093] In some embodiments, the tooth block 2 includes a tooth portion 22, the tooth portion 22 includes a plurality of tooth layer groups 221 stacked in the axial direction of the ring body 1, each tooth layer group 221 includes a plurality of tooth layers 2211 stacked in the axial direction, one of the plurality of tooth layers 2211 of each tooth layer group 221 is provided with a support top portion 3, and the support top portions 3 of the plurality of tooth layer groups 221 are arranged at intervals along the axial direction.

[0094] For example, Figure 8 As shown, the axial direction of the ring body 1 can be the up-down direction, and multiple tooth layer groups 221 can be stacked and arranged along the up-down direction. Each tooth layer group 221 can include three tooth layers 2211 stacked and arranged in the up-down direction, and each tooth layer 2211 can be a silicon steel sheet.

[0095] like Figure 8 As shown, the topmost tooth layer 2211 in each tooth layer group 221 may be integrally formed with a supporting top portion 3, while the two tooth layers 2211 below the tooth layer group 221 may not be provided with supporting top portions 3. The supporting top portions 3 of the plurality of tooth layer groups 221 may be arranged at equal intervals from top to bottom.

[0096] When the matching portion 21 of the tooth block 2 is assembled into the corresponding matching groove 11 , the supporting top portions 3 of the plurality of tooth layer groups 221 can bend and deform downward synchronously, thereby meeting the assembly requirement of supporting the matching portion 21 outward.

[0097] In some embodiments, Fig. 9 As shown, the tooth block 2 further includes an insulating layer 23 and a coil 24 .

[0098] The tooth portion 22 includes a first tooth segment 222 and a second tooth segment 223. The first tooth segment 222 is connected to one end of the second tooth segment 223. The matching portion 21 is connected to the other end of the second tooth segment 223. The insulating layer 23 is sleeved on the outer peripheral side of the second tooth segment 223. Fig. 9 As shown, the first tooth segment 222 and the second tooth segment 223 can be a T-shaped structure as a whole, wherein the first tooth segment 222 can be integrally formed at the outer end of the second tooth segment 223 , and the matching portion 21 can be integrally formed at the inner end of the second tooth segment 223 .

[0099] The insulating layer 23 may be insulating paper, and the insulating layer 23 as a whole may be a square tube structure. During assembly, the insulating layer 23 as a whole may be sleeved on the outer peripheral side of the second tooth segment 223, thereby playing the role of insulation protection and isolation.

[0100] The coil 24 is sleeved on the outer circumference of the insulating layer 23. Fig. 9As shown, the coil 24 can be wound by flat wire, and the wound coil 24 can also be a square tube structure. After the insulating layer 23 is assembled to the outer circumference of the second tooth segment 223, the coil 24 can be sleeved to the outer circumference of the insulating layer 23.

[0101] In some embodiments, the width of the first tooth segment 222 is greater than the width of the second tooth segment 223 , and in the circumferential direction of the coil body 1 , the spacing between the first tooth segments 222 of two adjacent tooth blocks 2 is smaller than the radial dimension of the center line of the coil 24 .

[0102] For example, Figure 2 As shown, the distance between the first tooth segments 222 of two adjacent tooth blocks 2 may be a size M, such as Fig. 9 As shown, the wire in the coil 24 may be a flat wire, and the radial dimension of the wire may be the thickness dimension of the flat wire, specifically dimension H, and dimension M is generally larger than dimension H.

[0103] Thus, the distance between two adjacent first tooth segments 222 can be limited to a smaller range, that is, the outer peripheral edge of the stator can be designed as a closed slot, which can reduce the cogging torque and increase the full rate of the winding slot.

[0104] In some embodiments, the tooth portion 22 is a parallel tooth or a trapezoidal tooth. Specifically, the second tooth segment 223 of the tooth portion 22 may include two side surfaces arranged opposite to each other in the circumferential direction. When the two side surfaces are arranged in parallel, the tooth portion 22 may be regarded as a parallel tooth, and when the two side surfaces are arranged in an eight-shaped shape, the tooth portion 22 may be regarded as a trapezoidal tooth.

[0105] In some embodiments, the ring body 1 can be processed from annular non-oriented silicon steel sheets, and the tooth block 2 can be processed from oriented silicon steel sheets, amorphous materials, non-oriented silicon steel, etc.

[0106] This mixed molding method using oriented silicon steel sheets, amorphous materials and non-oriented silicon steel sheets allows the stator to derive a variable magnetic circuit solution according to the material and shape characteristics of the tooth block 2, that is, the same set of motors can be used to produce high-speed motors, high-torque motors, high-efficiency motors, etc. Variable output characteristics can also be obtained through different matching methods, bringing the motor characteristics to the extreme.

[0107] Secondly, due to the adoption of a flat wire concentrated winding design, that is, the flat wire can be firstly wound on the tooth block 2, and then the tooth block 2 containing the flat wire is assembled on the coil body 1, the motor's current overload resistance can be increased by more than 40%, the temperature rise can be reduced by more than 30°C at the same stack height, and the torque can be increased by more than 20%.

[0108] In addition, since there is no need to consider the stator offline problem when assembling the flat wire winding structure, the size of the tooth slot can be controlled within 0.15mm, that is, the above-mentioned dimension M can be limited to a smaller size range, which can greatly reduce the tooth slot torque of the motor itself, reduce the vibration and noise of the motor, and also play a role in reducing the torque fluctuation during motor operation and improving the motor efficiency.

[0109] In some embodiments, due to the separate arrangement of the gear block 2 and the ring body 1, the ring body 1 can be matched with different gear blocks 2, thereby meeting the assembly and use requirements of motors of different models and improving the flexibility of processing and production.

[0110] In some embodiments, the forming process of the ring body 1 includes but is not limited to winding, stamping, bonding, powder metallurgy and the like, and the forming process of the tooth portion 22 of the tooth block 2 includes but is not limited to stamping, bonding, laser cutting and the like.

[0111] The following describes a motor according to an embodiment of the present invention.

[0112] The motor of the embodiment of the present invention includes a stator, which may be a stator as described in any of the above embodiments. The motor may also include a rotor, which may be fitted in the stator.

[0113] Next, a vehicle according to an embodiment of the present invention will be described.

[0114] The vehicle of the embodiment of the present invention includes a motor, which may be a motor as described in any of the above embodiments. The vehicle may be a two-wheeled electric vehicle, a three-wheeled electric vehicle, or other vehicles that require a motor.

[0115] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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, and therefore should not be understood as limiting the present invention.

[0116] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0117] In the present invention, unless otherwise clearly specified and limited, the terms "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 one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0118] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0119] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean 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 invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0120] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A stator, characterized in that: It comprises a ring body and a tooth block, wherein one of the ring body and the tooth block is provided with a matching groove, and the other of the ring body and the tooth block is provided with a matching portion matched in the matching groove, and the notch of the matching groove is a constricted opening to limit the matching portion from coming out of the matching groove; At least one of the groove wall of the matching groove and the matching portion is provided with a supporting top portion, and the supporting top portion supports between the groove wall and the matching portion so that the matching portion abuts against the groove wall and expands and locks in the matching groove.

2. The stator according to claim 1, characterized in that: The groove wall is provided with a first supporting top portion, and the matching portion is provided with a second supporting top portion, and the first supporting top portion and the second supporting top portion are both supported between the groove wall and the matching portion.

3. The stator according to claim 2, characterized in that: The groove wall of the mating groove includes a groove bottom wall, the mating portion is provided with an inner end face facing the inner side of the ring body, the groove bottom wall and the inner end face are arranged relatively to each other in the radial direction of the ring body, the first supporting top portion is provided on the groove bottom wall, the second supporting top portion is provided on the inner end face, and the first supporting top portion and the second supporting top portion are both supported between the groove bottom wall and the inner end face.

4. The stator according to claim 2, characterized in that: The groove wall and the matching portion are both provided with a sheet-like structure, and the first supporting top portion and the second supporting top portion are both formed by bending the sheet-like structure.

5. The stator according to claim 4, characterized in that: The first supporting top portion and the second supporting top portion are both bent along the axial direction of the ring body, and the bending direction of the first supporting top portion is opposite to the bending direction of the second supporting top portion.

6. The stator according to claim 4, characterized in that: The groove wall or the matching portion is provided with a recessed portion, the recessed portion extends along the axial direction of the ring body, and the sheet-like structure is arranged in the recessed portion and bent in the recessed portion.

7. The stator according to claim 2, characterized in that: The first supporting top portion and the second supporting top portion are staggeredly arranged in the circumferential direction of the ring body; and / or, at least one of the first supporting top portion and the second supporting top portion is provided in plurality; And / or, the number of the first supporting top portions is greater than the number of the second supporting top portions.

8. The stator according to claim 1, characterized in that: The groove wall and the matching portion are provided with convex portions. When the matching portion is assembled into the matching groove, the convex portion presses against the supporting top portion to drive the supporting top portion to bend.

9. The stator according to claim 1, characterized in that: The matching groove penetrates the ring body along the axial direction of the ring body and is connected with the outer peripheral wall of the ring body. The width dimensions of the matching groove and the matching portion in the circumferential direction of the ring body both show a decreasing trend from the inside to the outside along the ring body.

10. The stator according to claim 9, characterized in that The matching groove includes two groove side walls arranged opposite to each other in the circumferential direction of the ring body, and the matching portion includes two side wall surfaces arranged opposite to each other in the circumferential direction of the ring body; When the supporting top portion is supported between the groove wall and the matching portion, the two groove side walls are respectively in contact with the two side wall surfaces to restrict the matching portion from falling out of the matching groove.

11. The stator according to claim 1, characterized in that: The ring body includes a plurality of ring layer groups stacked in the axial direction of the ring body, each of the ring layer groups includes a plurality of ring layers stacked in the axial direction, and the matching groove penetrates the plurality of ring layer groups along the axial direction.

12. The stator according to claim 11, characterized in that The supporting top portion is disposed on one of the plurality of circle layers of each circle layer group, and the supporting top portions of the plurality of circle layer groups are arranged at intervals along the axial direction.

13. The stator according to claim 11, characterized in that There are multiple matching grooves, and the multiple matching grooves are divided into multiple groove groups arranged at intervals along the circumference of the ring body. Each of the groove groups includes multiple matching grooves arranged at intervals along the circumference of the ring body, and the support top parts in the multiple matching grooves in the same groove group are staggered along the axial direction.

14. The stator according to any one of claims 1 to 13, characterized in that: The tooth block includes a tooth portion, and the tooth portion includes a plurality of tooth layer groups stacked and arranged in the axial direction of the ring body, each of the tooth layer groups includes a plurality of tooth layers stacked and arranged in the axial direction, and the supporting top portion is provided on one of the plurality of tooth layers of each tooth layer group, and the supporting top portions of the plurality of tooth layer groups are arranged at intervals along the axial direction.

15. The stator according to claim 14, characterized in that The tooth block also includes: The tooth portion includes a first tooth segment and a second tooth segment, the first tooth segment is connected to one end of the second tooth segment, the matching portion is connected to the other end of the second tooth segment, and the insulating layer is sleeved on the outer peripheral side of the second tooth segment. The coil is sleeved on the outer peripheral side of the insulating layer.

16. The stator according to claim 15, characterized in that The width dimension of the first tooth segment is greater than the width dimension of the second tooth segment, and in the circumferential direction of the coil body, the spacing between the first tooth segments of two adjacent tooth blocks is smaller than the radial dimension of the center line of the coil; And / or, the tooth portions are parallel teeth or trapezoidal teeth.

17. A motor, characterized in that: The invention comprises a stator as claimed in any one of claims 1 to 16.

18. A vehicle, characterized in that: Comprising the motor as claimed in claim 17 above.

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