Coil support, stator assembly, motor and vehicle

Abstract

The utility model relates to a coil support, a stator assembly, a motor and a vehicle, the coil support comprises two coil frameworks which have the same structure and are spliced along a first direction, each coil framework is provided with a first connecting arm and a second connecting arm, the first connecting arm is provided with a first matching part, and the second connecting arm is provided with a second matching part which can be lapped with the first matching part; and at the joint of the two coil frameworks, the first matching part of the first connecting arm of one coil framework is jointed with the second matching part of the second connecting arm of the other coil framework. The two coil frameworks are installed in a plug-in mode, are installed on the stator iron core after being plugged in the first direction, and are suitable for the stator iron core with a pole shoe. At the joint position of the two coil frameworks, through the lap joint of the first matching part and the second matching part, the assembly precision at the joint position can be ensured, a gap is avoided, and the insulation performance with a stator iron core is ensured; the two coil frameworks adopt the same structural design, only one injection mold is needed, and the manufacturing cost is reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of electric machines, and in particular to a coil support, a stator assembly, an electric machine and a vehicle. BACKGROUND

[0002] The coil support is installed outside the stator core and can support the winding and be insulated from the stator core. In the related art, the coil support is of a whole structure and is sleeved outside the stator core from the tooth portion in the radial direction of the stator core. However, for the stator core with pole shoes, the whole coil support is no longer applicable, resulting in that the coil support cannot be installed. SUMMARY

[0003] To overcome the problems in the related art, the present disclosure provides a coil support, a stator assembly, an electric machine and a vehicle.

[0004] According to a first aspect of an embodiment of the present disclosure, a coil support is provided, which comprises two coil skeletons of the same structure and spliced in a first direction, each of the coil skeletons has a first connecting arm and a second connecting arm, the first connecting arm has a first matching portion, the second connecting arm has a second matching portion capable of being overlapped with the first matching portion, and at the joint of the two coil skeletons, the first matching portion of the first connecting arm of one is jointed with the second matching portion of the second connecting arm of the other.

[0005] Optionally, the first connecting arm and the second connecting arm respectively have an inner surface and an outer surface opposite to the inner surface, part of the inner surface of the first connecting arm is thinned to form the first matching portion, part of the outer surface of the second connecting arm is thinned to form the second matching portion, and the length of the second connecting arm is greater than the length of the first connecting arm.

[0006] Optionally, the coil skeleton comprises a skeleton main body and first and second baffles opposite to the skeleton main body, and a coil winding can be wound on the skeleton main body and stopped between the first and second baffles, wherein the skeleton main body is provided with a winding groove at least at a corner position.

[0007] Optionally, the first connecting arm and the second connecting arm are respectively configured as a U-shaped structure, a vertical segment of the U-shaped structure is formed as the skeleton main body, a first horizontal segment of the U-shaped structure is flush with a surface where the first baffle is located, and a second horizontal segment of the U-shaped structure is flush with a surface where the second baffle is located.

[0008] Optionally, a surface of the first baffle facing the second baffle is provided with a wire inlet groove, and the wire inlet groove extends in the first direction.

[0009] Optionally, an edge of the first baffle plate is provided with a wire clamping groove in communication with the wire inlet groove.

[0010] Optionally, the first baffle plate and / or the second baffle plate is provided with a positioning groove for cooperating with a positioning block of the busbar assembly.

[0011] Optionally, the first baffle plate and / or the second baffle plate is provided with a reinforcing rib.

[0012] Optionally, the coil supports are sequentially arranged in a circumferential direction, and each coil support is separately arranged.

[0013] According to a second aspect of the embodiments of the present disclosure, a stator assembly is provided, comprising an injection molding part and a plurality of stator core units sequentially spliced in a circumferential direction, each stator core unit comprising a stator core block, a coil winding and the above-mentioned coil support, the coil support being mounted on the corresponding stator core block, the coil winding being wound on the coil support, and the injection molding part being integrally injection molded to fill the gap between two adjacent stator core units.

[0014] According to a third aspect of the embodiments of the present disclosure, an electric machine is provided, comprising the stator assembly provided by the present disclosure.

[0015] According to a fourth aspect of the embodiments of the present disclosure, a vehicle is provided, comprising the electric machine described above.

[0016] The technical solutions provided by the embodiments of the present disclosure can have the following beneficial effects: in the coil support provided by the present disclosure, two coil skeletons are installed in a plug-in manner along a first direction and are mounted on a stator core, which is suitable for a stator core with a pole shoe and is simple and convenient to operate; at the joint position of the two coil skeletons, the first and second matching parts are overlapped to ensure the assembly precision at the joint position, avoid gaps and ensure the insulation performance of the stator core; in addition, the two coil skeletons adopt the same structure design, only one injection molding mold is needed, and the manufacturing cost is reduced.

[0017] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure.

[0019] Figure 1 is an assembly schematic view of a coil support and a stator core according to an exemplary embodiment.

[0020] Figures 2 to 5is a structural schematic view of a coil skeleton in a coil support from different perspectives according to an exemplary embodiment.

[0021] Figure 6 is a top view of a coil skeleton in a coil support according to an exemplary embodiment.

[0022] Figure 7 is an assembly schematic view of a coil support and a stator core according to an exemplary embodiment.

[0023] Figure 8 is a structural schematic view of a stator core monomer in a stator assembly according to an exemplary embodiment.

[0024] Figure 9 is a structural schematic view of a stator assembly according to an exemplary embodiment.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 1-coil skeleton; 10-body part; 11-first connecting arm; 111-first matching part; 12-second connecting arm; 121-second matching part; 110-inner surface; 120-outer surface; 100-skeleton body; 101-first baffle; 102-second baffle; 1001-winding groove; 1011-wire clamping groove; 1012-wire inlet groove; 1013-positioning groove; 1014-stiffener; 2-stator core block; 21-pole shoe; 3-coil winding; 1000-stator core monomer; 4-injection molding part. DETAILED DESCRIPTION

[0027] The exemplary embodiments will be described in detail herein below with reference to the drawings. In the following description, the same drawings reference numbers are used to denote like or similar elements unless otherwise denoted. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0028] In the present disclosure, the orientation words such as “up”, “down”, “top”, “bottom”, “left”, “right” generally refer to the drawing surface direction definition of the corresponding drawing unless otherwise stated, and “inner” and “outer” can refer to the inner and outer of the corresponding part profile or its location inside or outside the environment according to the specific context. In addition, in the following description, the same numbers in different drawings represent the same or similar elements unless otherwise denoted. The terms “first”, “second”, and the like used in the present disclosure are used to distinguish one element from another element, and do not have sequential and important meanings.

[0029] As Figure 1As shown, the integral coil support cannot be installed in the radial direction for the stator core 2 with the pole shoe 21. To solve this problem, the present disclosure provides a coil support comprising two coil skeletons 1 which are identical in structure and spliced in a first direction, each coil skeleton 1 having a first connecting arm 11 with a first matching part 111 and a second connecting arm 12 with a second matching part 121 capable of being overlapped with the first matching part 111, and at the joint of the two coil skeletons 1, the first matching part 111 of the first connecting arm 11 of one is engaged with the second matching part 121 of the second connecting arm 12 of the other.

[0030] Here, it should be noted that the first direction can be the axial direction of the stator core 2, and the pole shoe 21 will not affect the assembly of the coil support. The shapes of the first connecting arm 11 and the second connecting arm 12 can be designed according to the shape of the stator core 2. In the embodiment in which the cross section of the stator core 2 is an I-shaped structure, in order to support and insulate each surface of the stator core 2, the first connecting arm 11 and the second connecting arm 12 are respectively matched with the shapes of the two sides of the I-shaped structure, i.e., have a first baffle 101 fitted to the top, a second baffle 102 fitted to the bottom, and a skeleton body 100 fitted to the middle part, while also not affecting the winding of the coil winding 3 on the coil support. In addition, the first matching part 111 of the first connecting arm 11 and the second matching part 121 of the second connecting arm 12 are designed in different structures, for example, one can be designed as protruding and the other as recessed, or one can be designed as a connecting piece and the other as a connecting hole, and the technical solutions capable of achieving the overlapping and connecting effects of the two coil skeletons 1 all belong to the protection scope of the present disclosure.

[0031] In the coil support provided by the present disclosure, the two coil skeletons 1 are installed in a plug-in manner along the first direction after being plugged in, and are suitable for the stator core 2 with the pole shoe 21, and are simple and convenient to operate; at the joint position of the two coil skeletons 1, the assembly precision at the joint position can be ensured through the overlapping of the first matching part 111 and the second matching part 121, and gaps are avoided to ensure the insulation performance with the stator core 2; in addition, the two coil skeletons 1 are designed in the same structure, and only one injection mold is needed, thereby reducing the manufacturing cost.

[0032] As shown in Figure 2 and Figure 3 , the first connecting arm 11 and the second connecting arm 12 respectively have an inner surface 110 and an outer surface 120 opposite to the inner surface 110, part of the inner surface 110 of the first connecting arm 11 is thinned to form the first matching part 111, part of the outer surface 120 of the second connecting arm 12 is thinned to form the second matching part 121, and the length of the second connecting arm 12 in the first direction is greater than the length of the first connecting arm 11 in the first direction. In this way, as shown inFigure 1 As shown, when the two coil supports 1 are inserted in opposite directions, the second connecting arm 12 of the left coil support and the first connecting arm 11 of the right coil support are just opposite to each other, the second fitting part 121 of the left coil support can be just inserted into the first fitting part 111 of the right coil support, and the first connecting arm 11 of the left coil support and the second connecting arm of the right coil support are just opposite to each other, the second fitting part 121 of the right coil support is just inserted into the first fitting part 111 of the left coil support, realizing the lap joint of the two. The first fitting part 111 and the second fitting part 121 adopt a design that one is thinned on the outer surface and the other is thinned on the inner surface, and after the lap joint, they can be just spliced together, which is the same as the shape of the integral coil support.

[0033] In the present disclosure, as Figure 4 shown, the second connecting arm 12 is longer than the first connecting arm 11 by b millimeters, and the length of the first fitting part 111 is a millimeters, wherein a≥b. In the embodiment where a is equal to b, perfect splicing of the two coil supports 1 can be realized. In the embodiment where a is greater than b, the insertion joint of the two will not be affected, and at the same time, the lightweight design of the first connecting arm 11 can also be realized.

[0034] The first connecting arm 11 includes a main part and a first fitting part 111, and the second connecting arm 12 includes a main part and a second fitting part 121, and the main part is the part that is not thinned. The wall thickness at the first fitting part 111 and the wall thickness at the second fitting part 121 can be equal, for example, both positions are thinned by 1 / 2, that is, the wall thickness at the fitting part is 1 / 2 of the wall thickness at the main part. Of course, the present disclosure also includes embodiments where the wall thicknesses of the first fitting part 111 and the second fitting part 121 are different. In the latter embodiment, it is necessary to ensure that the wall thickness at the first fitting part 111 and the wall thickness at the second fitting part 121 are not greater than the wall thickness of the main part, and preferably, they can be equal to the wall thickness of the main part. In this way, the spliced coil support will not be higher than the stator core 2, and there will be no gap between the coil support and the stator core 2, and there will also be no gap between the two coil supports 1, which ensures the insulation capability after winding the coil winding 3.

[0035] Exemplarily, the coil support 1 includes a body part 10, the first ends of the first connecting arm 11 and the second connecting arm 12 are connected to the body part 10, the first fitting part 111 is arranged at the second end of the first connecting arm 11, and the second fitting part 121 is arranged at the second end of the second connecting arm 12, respectively. The first end and the second end are oppositely arranged. The entire coil support 1 is in a U-shaped structure, the body part 10, the first connecting arm 11 and the second connecting arm 12 form a receiving cavity for accommodating half of the stator core 2, and the second ends of the first connecting arm 11 and the second connecting arm 12 form an opening for insertion.

[0036] As Figure 2 , Figures 5 to 8As shown, the coil former 1 comprises a former main body 100 and first and second baffles 101 and 102 arranged opposite to the former main body 100, and the coil winding 3 can be wound on the former main body 100 and stopped between the first and second baffles 101 and 102, wherein the former main body 100 is provided with wire grooves 1001 at least at corner positions. The former main body 100 is used to wrap the stator core 2, achieving insulation between the coil winding 3 and the stator core 2, and Figure 2 In the embodiment shown, the wire grooves 1001 are provided only at four corner positions of the former main body 100, and Figure 7 In the embodiment shown, the corners and the side with a larger area of the former main body 100 are respectively provided with wire grooves 1001, as shown in Figure 6 As shown, the groove depth of the wire groove 1001 can be 1 / 3 of the diameter of the coil winding 3, and here the coil winding 3 can be round wire or flat wire, and the coil winding 3 can be neatly wound layer by layer along the wire groove 1001, which is conducive to improving the slot fill rate. The first and second baffles 101 and 102 are arranged opposite to each other, which can achieve a good stopping effect on the coil winding 3 on the coil support, so that the coil winding 3 is stably wound between the first and second baffles 101 and 102.

[0037] Exemplarily, the first and second connecting arms 11 and 12 are respectively configured as U-shaped structures, the vertical section of the U-shaped structure is formed as the former main body 100, the first horizontal section of the U-shaped structure is flush with the surface on which the first baffle 101 is arranged, and the second horizontal section of the U-shaped structure is flush with the surface on which the second baffle 102 is arranged. In this way, when winding the coil winding 3, no gap can be ensured between the coil winding 3 and the former main body 100 at positions close to the first and second baffles 101 and 102, and the coil winding 3 is more tightly wound on the former main body 100.

[0038] As shown in Figure 5 The surface of the first baffle 101 facing the second baffle 102 is provided with a wire inlet groove 1012 extending in the first direction. The wire inlet groove 1012 is arranged on the inner side of the first baffle 101, and is used to place the groove inner part of the wire inlet joint, so as to prevent interference with the upper coil when winding.

[0039] As shown in Figure 2 The edge of the first baffle 101 is provided with a wire clamping groove 1011 connected with the wire inlet groove 1012. The wire clamping groove 1011 can be used to fix the wire inlet joint or the wire outlet joint, so as to prevent the coil from loosening and facilitate subsequent assembly.

[0040] As shown in Figure 2 At least one of the first and second baffles 101 and 102 is provided with a positioning groove 1013, which can be any shape matched with the positioning block on the busbar assembly, and is used to achieve assembly of the busbar assembly.

[0041] As shown in Figure 2 At least one of the first baffle 101 and the second baffle 102 is provided with a reinforcing rib 1014 to improve the structural strength of the corresponding baffle.

[0042] In the present disclosure, the coil support introduced above can be a plurality of coil supports arranged in sequence in the circumferential direction, and each coil support is arranged separately. The coil support is suitable for the embodiment in which the stator core includes a plurality of stator core blocks 2, and a separate coil support is arranged for each stator core block 2. The coil support is first mounted on the stator core block 2, then the coil winding 3 is wound, and finally the plurality of stator core monomers 1000 are assembled and fixed together. The separate arrangement of the coil support can make it more convenient to assemble the stator core block 2 and the coil winding 3, and improve the overall assembly efficiency.

[0043] According to a second aspect of the present disclosure, as shown in Figure 9 A stator assembly is provided, which includes an injection molding part 4 and a plurality of stator core monomers 1000 arranged in sequence in the circumferential direction. Each stator core monomer 1000 includes a stator core block 2, a coil winding 3, and the coil support introduced above. The coil support is mounted on the corresponding stator core block 2, and the coil winding 3 is wound on the coil support. The injection molding part 4 is integrally injection molded to fill the gap between the adjacent two stator core monomers 1000.

[0044] The injection molding part 4 forms an integral structure with the plurality of stator core monomers 1000 when injection molded. That is, the injection molding liquid can completely fill the gap between the components of the stator core monomer 1000 after the plurality of stator core monomers 1000 are welded and fixed. After demolding, the injection molding part 4 and the components of the stator core monomer 1000 form an integral structure, and the structural rigidity of the entire stator assembly is significantly improved. There is no need for separate press fitting in the later stage, which avoids scratching the stator core made of stacked silicon steel sheets and prevents the silicon steel sheets from separating and warping. The performance of the motor is ensured. In addition, the overall injection molding design can reduce the manufacturing difficulty and cost of separately processing the injection molding part 4, and eliminates the need for a press fitting process, thereby avoiding damage to the stator assembly. The injection molding part 4 here can be a separately designed structure or a isolation cover. The rotor of the motor can be installed in the inner cavity of the isolation cover, and the stator assembly is installed outside the isolation cover to physically seal and isolate the dry cavity and the oil cavity of the motor stator and rotor.

[0045] According to a third aspect of the present disclosure, a motor is provided, which has all the beneficial effects of the above-described coil support and stator assembly, and will not be described in detail here.

[0046] According to a fourth aspect of the disclosure, a vehicle is provided, comprising the electric machine provided by the disclosure. The vehicle has all the beneficial effects of the coil support, the stator assembly and the electric machine as described above, which will not be repeated here.

[0047] Furthermore, the word "example" is used herein to mean serving as an instance or illustration. Any aspect or design described herein that is described as "example" is not necessarily to be construed as preferred or advantageous over other aspects or designs. Rather, the word "example" is intended to convey that the aspect or design is one of a number of possible examples that can be used to express the concept. As used in this document, the term "or" as used herein is intended to mean an inclusive "or" rather than an exclusive "or." That is, unless specified otherwise, or clear from context, "X employs A or B" is intended to mean any of the natural inclusive permutations. That is, if X employs A; X employs B; or X employs both A and B, then "X employs A or B" is satisfied under any of the foregoing instances. In addition, the articles "a" and "an" as used in this application and the appended claims should generally be construed to mean "one or more" unless specified otherwise or clear from context to be directed to a singular form. Thus, use of the articles in this application and the following claims is not limiting.

[0048] Also, although the disclosure has been described with respect to one or more implementations, those skilled in the art will readily appreciate that other alternatives can be used. It is contemplated that the disclosure can be carried out in practice in other ways than those specifically described, and that the disclosure is not limited to the specific examples described herein. In particular, with respect to the various functions described above with regard to the components (e.g., elements, resources, etc.) described above, unless otherwise indicated, the terminology used to describe such components is intended to correspond to any component that performs the specific function of the described component (functionally equivalent), even if structurally not equivalent to the disclosed structure. In addition, although a particular feature of the disclosure can have been disclosed with respect to only one of several implementations, such feature can be combined with one or more other features of the other implementations as can be desired and advantageous for any given or particular application. Furthermore, to the extent that "include", "have", "possess", "contain", or variants thereof are used in either the detailed description or the claims, such terminology is used inclusively and in the non- limiting sense of "comprising." Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the disclosure being indicated by the following claims.

[0049] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the disclosure being indicated by the following claims.

[0050] It is to be understood that the present disclosure is not limited to the precise construction described above and shown in the attached drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the claims appended hereto.

[0051] In the detailed description above, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration specific aspects in which the disclosure can be practiced. In this regard, directional terminology, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like, is used herein for the purpose of illustration only. Because device components can be positioned in a number of different orientations, the directional terminology can be used for illustration purposes only and is not restrictive. It is to be understood that other aspects can be utilized and structural or logical changes can be made without departing from the scope of the present disclosure. The following detailed description, therefore, is not to be taken in a limiting sense, as the scope of the present disclosure is defined by the appended claims.

[0052] It is to be understood that the features of the various aspects of the present disclosure described herein can be combined with each other, unless specifically stated otherwise. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items; similarly, "at least one of' includes any and all combinations of one or more of the associated listed items.

[0053] It should be understood that, unless otherwise specifically stated and limited, the terms "joined," "attached," "mounted," "connected," "linked," "fixed" and the like, as used in the embodiments of the present disclosure, should be construed broadly, for example, can be fixed connection, can be detachable connection, or integral; can be mechanical connection, can be electrical connection or communication with each other; can be directly connected, or indirectly connected through an intermediate medium, can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in this article can be understood according to the specific circumstances.

[0054] Further, the word "over" used in the context of a component, element, or material layer "over" another component, element, or material layer is used herein to mean that the component, element, or material layer is positioned, for example, placed, formed, deposited, etc. "indirectly" over the other component, element, or material layer such that one or more additional components, elements, or layers are arranged between the other component, element, or material layer and the component, element, or material layer. However, the word "over" used in the context of a component, element, or material layer "over" another component, element, or material layer can also optionally have the specific meaning of the component, element, or material layer being positioned, for example, placed, formed, deposited, etc. "directly" over the other component, element, or material layer, for example, in direct contact with the other component, element, or material layer.

[0055] Although terms such as "first," "second," and "third" can be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited to the terms. Instead, these terms are used only to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, the first element, component, region, layer or section mentioned in the examples described herein can also be called the second element, component, region, layer or section without departing from the teachings of the examples. In addition, the terms "first," "second" are used for description purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Thus, the features defined with "first," "second" can explicitly or implicitly include at least one of the features. In the description herein, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specifically limited.

[0056] It will be understood that the spatially relative terms herein, such as "above," "upper," "below," and "lower," are intended to be interpreted as the relative positions of one element to another element as shown in the figures. Such a spatially relative term is used to describe the relative position of an element to another element as the device is normally operated or used. For example, if the device is turned over, the element described as above or upper with respect to another element would then be below or lower with respect to the other element. Thus, the term "above" encompasses both positions above and below. The device can be oriented in other ways (e.g., rotated 90 degrees or at other orientations) and the spatially relative terms used herein are interpreted accordingly.

Claims

1. A coil support, characterized in that, The coil support includes two identical coil frames spliced ​​together along a first direction. Each coil frame has a first connecting arm and a second connecting arm. The first connecting arm has a first mating part, and the second connecting arm has a second mating part that can engage with the first mating part. At the junction of the two coil frames, the first mating part of the first connecting arm of one coil frame engages with the second mating part of the second connecting arm of the other coil frame.

2. The coil support according to claim 1, characterized in that, The first connecting arm and the second connecting arm each have an inner surface and an outer surface opposite to the inner surface. A portion of the inner surface of the first connecting arm is thinned to form the first mating portion, and a portion of the outer surface of the second connecting arm is thinned to form the second mating portion. The length of the second connecting arm in the first direction is greater than the length of the first connecting arm in the first direction.

3. The coil support according to claim 1, characterized in that, The coil frame includes a frame body and a first baffle and a second baffle disposed opposite to the frame body. The coil winding can be wound on the frame body and stopped between the first baffle and the second baffle. The frame body is provided with a winding groove at least at the corner position.

4. The coil support according to claim 3, characterized in that, The first connecting arm and the second connecting arm are each constructed as a U-shaped structure. The vertical section of the U-shaped structure forms the main body of the skeleton. The first horizontal section of the U-shaped structure is flush with the surface where the first baffle is located, and the second horizontal section of the U-shaped structure is flush with the surface where the second baffle is located.

5. The coil support according to claim 3, characterized in that, The surface of the first baffle facing the second baffle is provided with a wire inlet groove, which extends along a first direction.

6. The coil support according to claim 5, characterized in that, The edge of the first baffle is provided with a wire-locking groove that communicates with the wire inlet groove.

7. The coil support according to claim 3, characterized in that, The first baffle and / or the second baffle are provided with positioning grooves, which are used to cooperate with the positioning blocks of the busbar assembly.

8. The coil support according to claim 3, characterized in that, The first baffle and / or the second baffle are provided with reinforcing ribs.

9. The coil support according to any one of claims 1-8, characterized in that, The coil supports are arranged in multiple circumferentially, and each coil support is set up independently.

10. A stator assembly, characterized in that, The system includes an injection-molded part and multiple stator core units sequentially spliced ​​along the circumference. Each stator core unit includes a stator core assembly, a coil winding, and a coil support as described in any one of claims 1-9. The coil support is mounted on the corresponding stator core assembly, and the coil winding is wound around the coil support. The injection-molded part is integrally injection molded to fill the gap between two adjacent stator core units for fixation.

11. An electric motor, characterized in that, Includes the stator assembly as described in claim 10.

12. A vehicle, characterized in that, Includes the motor as described in claim 11.

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