Stator, motor and vehicle

Abstract

The utility model 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 at least one of the groove wall of the matching groove and the matching part is provided with a supporting top part. And the supporting part is supported between the groove wall and the matching part, so that the matching part is propped against the groove wall and is internally expanded and locked in the matching groove. According to the utility model, the assembly stability of the ring body and the tooth blocks of the stator is good, the situation that the tooth blocks are easy to loosen in the prior art is avoided, and the problems of large operation noise, low motor efficiency and the like caused by loosening are further avoided.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a stator, a motor, and a vehicle. Background Technology

[0002] In-wheel motors are a type of motor that integrates the power system, transmission system, and braking system into one unit. In-wheel motors can eliminate a large number of transmission components, thereby simplifying the overall vehicle. Furthermore, in-wheel motors can also achieve a variety of complex drive modes, thus meeting the actual needs of vehicle use.

[0003] Currently, most two-wheeled vehicles use hub motors for drive. In order to improve the problems of high iron loss, small maximum magnetic flux, low motor efficiency, and high motor temperature of hub motors, some hub motor technologies have adopted a design that separates the stator teeth and stator rings. However, the stator teeth and stator rings in these technologies have problems such as poor assembly stability, easy loosening, and high operating noise. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, this utility model embodiment proposes a stator with good assembly stability of the stator body and tooth block, avoiding the situation in related technologies where the tooth block is easy to loosen, thereby avoiding problems such as high operating noise and low motor efficiency caused by loosening.

[0006] This utility model embodiment also proposes a motor including the above-described stator.

[0007] This utility model embodiment also proposes a vehicle including the above-described motor.

[0008] The stator of this utility model embodiment includes a ring body and a tooth block, one of the ring body and the tooth block is provided with a mating groove, and the other is provided with a mating part that mates with the mating groove;

[0009] At least one of the groove wall and the mating part of the mating groove is provided with a support top, and the support top supports between the groove wall and the mating part so that the mating part abuts against the groove wall and is internally locked in the mating groove.

[0010] In some embodiments, the groove wall is provided with a first support top, and the mating part is provided with a second support top, both the first support top and the second support top supporting each other between the groove wall and the mating part.

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

[0012] In some embodiments, both the groove wall and the mating portion are provided with sheet-like structures, and the top of the first support and the top of the second support are formed by bending the sheet-like structures.

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

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

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

[0016] And / or, at least one of the tops of the first support and the second support is provided with a plurality of supports;

[0017] And / or, the number of the first support tops is greater than the number of the second support tops.

[0018] In some embodiments, the groove wall and the mating portion are provided with protrusions, and during the process of assembling the mating portion into the mating groove, the protrusions press against the top of the support to drive the top of the support to bend.

[0019] In some embodiments, the mating groove extends through the ring body along the axial direction and communicates with the outer peripheral wall of the ring body. The width dimensions of the mating groove and the mating portion in the circumferential direction of the ring body both decrease from the inside to the outside of the ring body.

[0020] In some embodiments, the mating groove includes two groove sidewalls arranged opposite to each other in the circumferential direction of the ring body, and the mating part includes two sidewall surfaces arranged opposite to each other in the circumferential direction of the ring body;

[0021] When the top of the support rests between the groove wall and the mating part, the two groove sidewalls respectively abut against the two sidewall surfaces to prevent the mating part from dislodging from the mating groove.

[0022] In some embodiments, the ring body includes a plurality of ring layers stacked in the axial direction of the ring body, each ring layer group including a plurality of ring layers stacked in the axial direction, and the mating groove passing through the plurality of ring layer groups along the axial direction.

[0023] In some embodiments, one of the plurality of layers in each of the layer groups is provided with the support top, and the support tops of the plurality of layer groups are arranged at intervals along the axial direction.

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

[0025] In some embodiments, the tooth block includes a tooth portion, the tooth portion including a plurality of tooth layer groups stacked in the axial direction of the ring body, each tooth layer group including a plurality of tooth layers stacked in the axial direction, one of the plurality of tooth layers of each tooth layer group having the support top, and the support tops of the plurality of tooth layer groups being spaced apart along the axial direction.

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

[0027] The insulating layer includes a first tooth segment and a second tooth segment, the first tooth segment being connected to one end of the second tooth segment, the mating part being connected to the other end of the second tooth segment, and the insulating layer being sleeved on the outer periphery of the second tooth segment.

[0028] A coil, wherein the coil is sleeved on the outer periphery of the insulating layer.

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

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

[0031] The motor of this utility model embodiment includes the stator as described in any of the above embodiments.

[0032] The vehicle of this utility model embodiment includes the motor as described in any of the above embodiments.

[0033] Beneficial effects: The stator, motor and vehicle of this utility model embodiment have good assembly stability of the stator ring body and tooth block, avoiding the situation of tooth block loosening in related technologies, and thus avoiding problems such as high operating noise and low motor efficiency caused by loosening. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the stator according to an embodiment of the present invention.

[0035] Figure 2 This is a top view of the stator and a partially enlarged schematic diagram of the mating groove in an embodiment of this utility model.

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

[0037] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0038] Figure 5 This is a schematic diagram of the ring body and a partial enlargement of an embodiment of this utility model.

[0039] Figure 6 This is a schematic diagram of the distribution of grooves on the ring body according to an embodiment of the present invention.

[0040] Figure 7 yes Figure 6 A magnified view of a portion of point B in the middle.

[0041] Figure 8 This is a schematic diagram of the teeth in an embodiment of the present invention.

[0042] Figure 9 This is an exploded view of the tooth block according to an embodiment of the present invention.

[0043] Figure label:

[0044] 1-Ring body; 11-Matching groove; 111-Groove bottom wall; 112-Groove side wall; 12-Groove assembly;

[0045] 2-Tooth block; 21-Mating part; 211-Inner end face; 212-Side wall surface; 22-Tooth part; 221-Tooth layer group; 2211-Tooth layer; 222-First tooth segment; 223-Second tooth segment; 23-Insulation layer; 24-Coil;

[0046] 3-Support top; 31-First support top; 32-Second support top;

[0047] 4-Layer structure;

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

[0049] 7-Concentric group; 71-Concentric group; 711-First concentric group; 712-Second concentric group; 713-Third concentric group. Detailed Implementation

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

[0051] like Figure 1 As shown, the stator of this utility model embodiment includes a ring body 1 and a tooth block 2. One of the ring body 1 and the tooth block 2 is provided with a mating groove 11, and the other is provided with a mating part 21 that fits into the mating groove 11.

[0052] For example, such as Figures 1 to 3 As shown, the ring body 1 can be roughly circular in shape and can serve as the magnetic yoke of the stator during use. Multiple mating grooves 11 can be provided on the outer periphery of the ring body 1. These grooves 11 can be arranged at equal intervals along the circumference of the ring body 1, and all grooves 11 are located on the outer periphery of the ring body 1. That is, the depth direction of each groove 11 can be arranged radially along the ring body 1, and the opening of each groove 11 can communicate with the outer peripheral wall of the ring body 1.

[0053] like Figure 1 As shown, the tooth block 2 can be a block structure as a whole. The plane perpendicular to the axial direction of the tooth block 2 can be a toothed plane, and the tooth block 2 can be arranged to extend radially along the ring body 1. The mating part 21 can be integrally formed on the tooth block 2. During assembly, the mating part 21 of the tooth block 2 can be inserted into the corresponding mating groove 11 along the axial direction, thereby facilitating the assembly of the tooth block 2 and the ring body 1. Specifically, there can be multiple tooth blocks 2, and each tooth block 2 can be assembled into the above-mentioned multiple mating grooves 11 one by one through the corresponding mating part 21.

[0054] At least one of the groove wall of the mating groove 11 and the mating part 21 is provided with a support top 3. The support top 3 supports between the groove wall and the mating part 21 so that the mating part 21 abuts against the groove wall and is internally locked in the mating groove 11.

[0055] For example, such as Figure 2As shown, the support top 3 can be provided only on the groove wall of the mating groove 11. The support top 3 can be a spring-like structure. When the mating part 21 is pressed into the mating groove 11, the support top 3 will be bent and deformed under the action of the mating part 21. Due to the elasticity of the support top 3 itself, the support top 3 can support between the groove wall and the mating part 21. For example, the support top 3 can apply a radial force between the groove wall and the mating part 21. Under the action of this force, a part of the wall surface of the mating part 21 can abut against the corresponding groove wall of the mating groove 11, and the corresponding groove wall will apply a reaction force opposite to the force applied by the support top 3 to the mating part 21. Under the combined action of this pair of forces and reactions, the mating part 21 can be internally expanded and locked in the mating groove 11, thereby ensuring the structural stability of the mating part 21 assembly.

[0056] In this embodiment of the present invention, a support top 3 is provided between the ring body 1 and the tooth block 2. Under the action of the support top 3, the ring body 1 and the tooth block 2 can be fixed and limited by internal expansion locking, which makes the assembly stability of the ring body 1 and the tooth block 2 good, avoiding the situation where the tooth block 2 is easy to loosen in related technologies, and thus avoiding the problems of high operating noise and low motor efficiency caused by loosening.

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

[0058] For example, such as Figure 4 As shown, the top of the first support 31 can be integrally formed on the groove wall of the mating groove 11, and the top of the second support 32 can be integrally formed on the corresponding outer wall surface of the mating part 21. When the mating part 21 is assembled into the mating groove 11, both the top of the first support 31 and the top of the second support 32 will bend and deform, and both will support the mating part 21 and the groove wall of the mating groove 11. Thus, the supporting effect between the mating part 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 part 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 opposite each other in the radial direction of the ring body 1, the first support top 31 is provided on the groove bottom wall 111, the second support top 32 is provided on the inner end face 211, and both the first support top 31 and the second support top 32 support each other between the groove bottom wall 111 and the inner end face 211.

[0060] For example, such as Figure 4As shown, the opening of the mating groove 11 can face the outer side of the ring body 1, and the bottom wall 111 of the groove is the groove wall portion of the mating groove 11 that is arranged opposite to the opening. The inner end face 211 of the mating part 21 can be the surface of the mating part 21 facing the inner side of the ring body 1. The aforementioned first support top 31 can be integrally formed on the bottom wall 111 of the groove, while the aforementioned second support top 32 can be integrally formed on the inner end face 211 of the mating part 21.

[0061] When the mating part 21 is assembled into the mating groove 11, the bottom wall 111 of the groove will be arranged opposite to the inner end face 211 in the radial direction of the ring body 1. The first support top 31 and the second support top 32 will deform due to the squeezing action of the bottom wall 111 and the inner end face 211. The first support top 31 and the second support top 32 will support each other between the bottom wall 111 and the inner end face 211. The groove opening of the mating groove 11 can be a narrowing structure, which avoids the mating part 21 from coming out of the groove opening of the mating groove 11. It also makes the arrangement of the first support top 31 and the second support top 32 conform to the actual assembly needs, ensuring the structural stability of the assembly of the mating part 21 and the mating groove 11.

[0062] In some embodiments, both the groove wall and the mating portion 21 are provided with sheet-like structures 4, and the first support top 31 and the second support top 32 are both formed by bending the sheet-like structures 4. For example, as Figure 4 As shown, the sheet structure 4 can be roughly rectangular. Before assembly, the sheet structure 4 can extend radially along the ring body 1. When the mating part 21 is assembled into the corresponding mating groove 11, the sheet structure 4 will be squeezed and bent due to the squeezing action during the assembly process. This allows the sheet structure 4 to fill and support between the bottom wall 111 of the groove and the inner end face 211 of the mating part 21. The bent sheet structure 4 constitutes the first support top 31 or the second support top 32, which facilitates the forming of the first support top 31 and the second support top 32 and ensures that the first support top 31 and the second support top 32 have a good supporting effect.

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

[0064] For example, such as Figure 4 As shown, the mating part 21 can be assembled into the mating groove 11 from top to bottom. During the assembly process, the top of the first support 31 can be arranged near the top side of the ring body 1 and the top of the first support 31 can be bent downwards. The top of the second support 32 can be arranged near the bottom side of the tooth block 2 and the top of the second support 32 can be bent upwards.

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

[0066] In some embodiments, the groove wall or mating part 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, such as Figure 4 As shown, the recess 5 can be a rectangular groove, and it can extend along the axial direction of the ring body 1. The sheet structure 4 can be integrally formed in the recess 5, and during the process of assembling the mating part 21 into the mating groove 11, the sheet structure 4 can be bent and deformed along the recess 5. The recess 5 provides deformation space for the sheet structure 4, thereby facilitating the bending and deformation of the sheet structure 4 during assembly.

[0068] In some embodiments, the first support top 31 and the second support top 32 are staggered in the circumferential direction of the ring body 1. For example, as Figure 4 As shown, the first support top 31 and the second support top 32 are not directly opposite each other in the radial direction of the ring body 1. This allows the first support top 31 and the second support top 32 to be staggered during bending deformation, avoiding interference between them during bending. Furthermore, the first support top 31 and the second support top 32 can make full use of the gap space between the bottom wall 111 of the groove and the inner end face 211, avoiding the situation where the gap between the bottom wall 111 of the groove and the inner end face 211 is easily increased when the first support top 31 and the second support top 32 are directly opposite each other, which is conducive to further improving the structural stability of the assembly.

[0069] In some embodiments, at least one of the first support top 31 and the second support top 32 is provided with a plurality of supports. For example, as shown in the figure Figure 4 As shown, the top 31 of the first support can have two or more, and in some other embodiments, the top 31 of the first support can also have three or four, thereby improving the supporting effect. In other embodiments, the top 32 of the second support can also have two or three, etc.

[0070] In some embodiments, the number of first support tops 31 is greater than the number of second support tops 32. For example, as Figure 4As shown, there can be two first support tops 31, which can be arranged at intervals around the circumference of the ring body 1. There can be only one second support top 32, which can be located between the two first support tops 31. This can improve the structural stability of the assembly.

[0071] In some embodiments, the groove wall and the mating part 21 are provided with a protrusion 6. During the process of assembling the mating part 21 into the mating groove 11, the protrusion 6 presses against the support top 3 to drive the support top 3 to bend.

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

[0073] In some other embodiments, a protrusion 6 may also be provided on the inner end face 211 of the mating part 21. The protrusion 6 on the inner end face 211 can abut against the top of the first support 31, thereby facilitating the bending and deformation of the top of the first support 31.

[0074] In some embodiments, the mating groove 11 extends through the ring body 1 along the axial direction of the ring body 1 and communicates with the outer peripheral wall of the ring body 1. The width dimensions of the mating groove 11 and the mating part 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, such as Figure 4 As shown, the mating groove 11 can be a dovetail groove, and the width of the mating groove 11 in the circumferential direction of the ring body 1 can gradually decrease from the inside to the outside of the ring body 1. The mating block can also be a dovetail block, and the width of the mating block in the circumferential direction of the ring body 1 can gradually decrease 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 restricted in the mating groove 11 in the radial direction, which avoids the mating block coming out of the mating groove 11 in the radial direction, and also meets the need for the mating block to be fixed in the mating groove 11 under the supporting action of the top support 3.

[0077] In some embodiments, such as Figure 4 As shown, the mating groove 11 includes two groove sidewalls 112 arranged opposite each other in the circumferential direction of the ring body 1. The two groove sidewalls 112 are generally arranged in a figure-eight shape. The mating part 21 includes two sidewall surfaces 212 arranged opposite each other in the circumferential direction of the ring body 1. The two sidewall surfaces 212 can also be arranged in a figure-eight shape.

[0078] When the top support 3 is positioned between the groove wall and the mating part 21, the two groove sidewalls 112 abut against the two sidewall surfaces 212 respectively to prevent the mating part 21 from dislodging from the mating groove 11. Specifically, after the mating part 21 is assembled in the mating groove 11, the top support 3 can push the mating part 21 outward from the inside of the mating part 21. Due to the abutting action of the corresponding groove sidewalls 112 and sidewall surfaces 212, the mating part 21 is locked between the top support 3 and the corresponding groove sidewalls 112, thereby ensuring the structural stability of the assembly.

[0079] Secondly, since the two groove sidewalls 112 are arranged in a V-shape, the two groove sidewalls 112 also have a guiding function, which allows the mating part 21 to move closer to the central axis of the mating groove 11, thus ensuring the assembly accuracy of the tooth block 2 and the ring body 1.

[0080] In some embodiments, the ring body 1 includes a plurality of ring layers 7 stacked in the axial direction of the ring body 1, each ring layer 7 including a plurality of ring layers 71 stacked in the axial direction, and the mating groove 11 passes through the plurality of ring layers 7 along the axial direction.

[0081] For example, such as Figure 5 As shown, the ring body 1 may include multiple ring groups 7, each of which is generally annular and can be stacked sequentially along the axial direction of the ring body 1. Each ring group 7 may include three rings 71. In some other embodiments, each ring group 7 may also include two, four, five, or other numbers of rings 71. The rings 71 may specifically be annular structures formed of silicon steel sheets.

[0082] Each concentric ring 7 can be provided with multiple mating grooves 11. The multiple mating grooves 11 can be arranged at equal intervals along the circumference of the concentric ring 7, and the multiple mating grooves 11 of the multiple concentric ring 7 can be arranged relative to each other and connected in the axial direction. This facilitates the processing and forming of the ring body 1.

[0083] In some embodiments, one of the plurality of layers 71 of each layer group 7 is provided with a support top 3, and the support tops 3 of the plurality of layer groups 7 are arranged at axial intervals.

[0084] For example, each mating groove 11 of each of the aforementioned concentric rings 7 can be provided with at least one support top 3, for example, such as Figure 5 As shown, each concentric ring group 7 can have two support tops 3 in its single mating groove 11, and these two support tops 3 can be arranged at intervals in the circumferential direction of the ring body 1. It should be noted that the three rings 71 of each concentric ring group 7 can be arranged together in a top-to-bottom direction, and the two support tops 3 mentioned above can be connected to the uppermost ring 71 of the three rings 71.

[0085] like Figure 5As shown, the axial direction of the ring body 1 can be the vertical direction, and multiple ring groups 7 can be stacked in the vertical direction. The mating grooves 11 of multiple ring groups 7 can be arranged in the vertical direction and form a complete mating groove 11. Furthermore, multiple support tops 3 located in the same mating groove 11 in multiple ring groups 7 can be arranged at equal intervals along the vertical direction.

[0086] Therefore, after the tooth block 2 is assembled into the corresponding mating groove 11, the multiple support tops 3 in the same mating groove 11 can be bent and deformed in the same direction. Since the support top 3 is only connected to the uppermost ring 71 of the three rings 71 in each ring group 7, the two rings 71 below can avoid each other, which facilitates the bending and deformation of the support top 3.

[0087] In some embodiments, there are multiple mating grooves 11, which 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 tops 3 in the multiple mating grooves 11 of the same groove group 12 are arranged axially offset.

[0088] For example, such as Figure 6 As shown, each groove group 12 may include three mating grooves 11 continuously distributed circumferentially on the ring body 1, and multiple groove groups 12 may be arranged at equal intervals along the circumference of the ring body 1. In some other embodiments, each groove group 12 may also include two, four, five, or other numbers of mating grooves 11.

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

[0090] Each groove group 12 may include three mating grooves 11 continuously distributed in the circumferential direction, such as Figure 7 As shown, the three mating slots 11 of the same slot group 12 can be arranged at intervals along the left and right directions. The support top 3 in the mating slot 11 on the left can be connected to the uppermost first ring 711, the support top 3 in the middle mating slot 11 can be connected to the middle second ring 712, and the support top 3 in the mating slot 11 on the right can be connected to the lowermost third ring 713.

[0091] During assembly, the support top 3 on the first ring 711 can be bent downwards, the support top 3 on the second ring 712 can be bent upwards or downwards depending on the assembly direction of the tooth block 2, and the support top 3 on the third ring 713 can be bent upwards.

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

[0093] In some embodiments, the tooth block 2 includes a tooth portion 22, which 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 in each tooth layer group 221 is provided with a support top 3, and the support tops 3 of the plurality of tooth layer groups 221 are spaced apart along the axial direction.

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

[0095] like Figure 8 As shown, the uppermost tooth layer 2211 in each tooth layer group 221 can be integrally formed with a support top 3, while the two tooth layers 2211 below the tooth layer group 221 may not have a support top 3. The support tops 3 of multiple tooth layer groups 221 can be arranged at equal intervals along the direction from top to bottom.

[0096] When the mating part 21 of the tooth block 2 is assembled into the corresponding mating groove 11, the top 3 of the multiple tooth layer groups 221 can be bent and deformed downwards simultaneously, thereby satisfying the assembly requirement of the outward support mating part 21.

[0097] In some embodiments, such as Figure 9 As shown, the tooth block 2 also 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, and the mating portion 21 is connected to the other end of the second tooth segment 223. An insulating layer 23 is sleeved on the outer periphery of the second tooth segment 223. For example, as... Figure 9 As shown, the first tooth segment 222 and the second tooth segment 223 can be a T-shaped structure as a whole. The first tooth segment 222 can be integrally formed on the outer end of the second tooth segment 223, and the mating part 21 can be integrally formed on the inner end of the second tooth segment 223.

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

[0100] The coil 24 is sleeved on the outer periphery of the insulating layer 23. For example, as Figure 9As shown, the coil 24 can be made by winding flat wire, and the coil 24 as a whole can also be a square cylindrical structure. After the insulating layer 23 is assembled to the outer periphery of the second tooth segment 223, the coil 24 can be sleeved onto the outer periphery 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 distance between the first tooth segments 222 of two adjacent tooth blocks 2 is less than the radial dimension of the center line of the coil 24.

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

[0103] Therefore, the spacing between two adjacent first tooth segments 222 can be limited to a small range, which allows the outer periphery of the stator to form a closed slot design, reducing the cogging torque while increasing the full coverage of the winding slots.

[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 sides arranged opposite each other in the circumferential direction. When the two sides are arranged in parallel, the tooth portion 22 can be regarded as a parallel tooth, and when the two sides are arranged in a V-shape, the tooth portion 22 can be regarded as a trapezoidal tooth.

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

[0106] This hybrid molding method, using oriented silicon steel sheets, amorphous materials, and non-oriented silicon steel sheets, allows the stator to derive variable magnetic circuit schemes based on the material and shape characteristics of the tooth block 2. This means that the same set of motors can be used to create high-speed motors, high-torque motors, and high-efficiency motors. Different combinations can also achieve variable output characteristics, maximizing the motor's performance.

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

[0108] In addition, since the assembled flat wire winding structure does not need to consider the stator winding problem, the size of the tooth slot can be controlled to within 0.15mm. That is, the above-mentioned size M can be limited to a small size range, which can greatly reduce the cogging torque of the motor itself, reduce the vibration and noise of the motor, and also reduce the torque fluctuation during motor operation and improve the efficiency of the motor.

[0109] In some embodiments, the separate arrangement of the tooth block 2 and the ring body 1 allows the ring body 1 to be matched with different tooth blocks 2, thereby meeting the assembly and use needs of different models of motors 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, etc., and the forming process of the tooth portion 22 of the tooth block 2 includes, but is not limited to, stamping, bonding, laser cutting, etc.

[0111] The motor of an embodiment of this utility model is described below.

[0112] The motor of this embodiment includes a stator, which can be the stator described in any of the above embodiments. The motor may also include a rotor, which may be fitted inside the stator, etc.

[0113] The vehicle according to an embodiment of the present invention is described below.

[0114] The vehicle in this embodiment of the invention includes a motor, which can be the motor described in any of the above embodiments. The vehicle can be a two-wheeled electric vehicle, a three-wheeled electric vehicle, or any other vehicle that requires the installation of a motor.

[0115] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0116] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0117] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0118] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0119] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0120] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A stator characterized by, The ring body and the tooth block are provided with a matching groove and a matching part matched in the matching groove respectively; At least one of the groove wall of the matching groove and the matching part is provided with a supporting part, which supports between the groove wall and the matching part to make the matching part abut against the groove wall and be locked in the matching groove.

2. The stator of claim 1, wherein The groove wall is provided with a first supporting part, and the matching part is provided with a second supporting part, both of which support between the groove wall and the matching part.

3. A stator according to claim 2, characterised in that The groove wall of the matching groove includes a groove bottom wall, and the matching part 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 oppositely arranged in the radial direction of the ring body, the first supporting part is arranged on the groove bottom wall, the second supporting part is arranged on the inner end face, and the first supporting part and the second supporting part are both supported between the groove bottom wall and the inner end face.

4. The stator of claim 2, wherein The groove wall and the matching part are both provided with a sheet structure, and the first supporting part and the second supporting part are both bent by the sheet structure.

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

6. The stator of claim 4, wherein The groove wall or the matching part is provided with a recess extending along the axial direction of the ring body, and the sheet structure is arranged in and bent in the recess.

7. The stator of claim 2, wherein The first supporting part and the second supporting part are arranged in a circumferential direction of the ring body. And / or, at least one of the first supporting part and the second supporting part is provided with a plurality of supporting parts. And / or, the number of the first supporting parts is greater than that of the second supporting parts.

8. The stator of claim 1, wherein The groove wall and the matching part are provided with a protrusion, which presses against the supporting part to drive the supporting part to bend during the assembly of the matching part to the matching groove.

9. The stator of claim 1, wherein The matching groove penetrates through the ring body along the axial direction of the ring body and communicates with the outer peripheral wall of the ring body, and the width of the matching groove and the matching part in the circumferential direction of the ring body decreases from the inside to the outside of the ring body.

10. The stator of claim 9, wherein The matching groove includes two groove side walls oppositely arranged in the circumferential direction of the ring body, and the matching part includes two side wall faces oppositely arranged in the circumferential direction of the ring body. When the supporting part is supported between the groove wall and the matching part, the two groove side walls and the two side wall faces abut against each other to limit the matching part from being pulled out of the matching groove.

11. The stator of claim 1, wherein 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 through the plurality of ring layer groups along the axial direction.

12. The stator of claim 11, wherein, ​ 13. The stator of claim 11, wherein The plurality of fitting grooves are divided into a plurality of groove groups arranged along the circumferential direction of the ring body, each groove group comprises a plurality of fitting grooves arranged along the circumferential direction of the ring body, and the supporting top portions in the fitting grooves of the same groove group are arranged in axial staggered arrangement.

14. The stator of any one of claims 1-13, wherein, The tooth block comprises a tooth portion, the tooth portion comprises a plurality of tooth layer groups arranged in axial stacking, each tooth layer group comprises a plurality of tooth layers arranged in axial stacking, one of the tooth layers of each tooth layer group is provided with the supporting top portion, and the supporting top portions of the plurality of tooth layer groups are arranged in axial staggering.

15. The stator of claim 14, characterized in that, The tooth block further comprises: an insulation layer, the tooth portion comprises a first tooth segment and a second tooth segment, the first tooth segment is connected to one end of the second tooth segment, the fitting portion is connected to the other end of the second tooth segment, the insulation layer is sleeved on the outer circumferential side of the second tooth segment, a coil, the coil is sleeved on the outer circumferential side of the insulation layer.

16. The stator of claim 15, wherein The width dimension of the first tooth segment is greater than the width dimension of the second tooth segment, and the spacing of the first tooth segments of two adjacent tooth blocks in the circumferential direction of the ring body is less than the radial dimension of the coil center line; and / or, the tooth portion is parallel tooth or trapezoidal tooth.

17. An electric machine characterized by The stator comprises any one of the above claims 1-16.

18. A vehicle characterized by comprising: The motor comprises the above claim 17.

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