Stator assembly, motor and vehicle

Abstract

The utility model relates to a stator assembly, a motor and a vehicle, the stator assembly comprises an isolation cover and a plurality of stator iron core monomers which are arranged on the periphery of the isolation cover and are sequentially arranged along the circumferential direction, each stator iron core monomer comprises a stator iron core splicing block, a coil winding and an insulation support, and the insulation support is installed on the stator iron core splicing block. The coil winding is wound on the insulation support, the isolation cover is integrally formed in an injection molding mode, and the isolation cover and at least one of the stator iron core splicing blocks, the insulation support and the coil winding are of an integrated structure. After all parts of the stator assembly are fixed, plastic liquid is poured, gaps among all the parts of the stator assembly can be completely filled with the plastic liquid, the isolation cover and the stator assembly are of an integrated structure after forming and demolding, the structural rigidity of the whole stator assembly is obviously improved, later independent press fitting is not needed, damage to the stator assembly is avoided, and the performance of the motor is guaranteed. And the integral injection molding design is adopted, so that the manufacturing difficulty and cost of independently processing the isolation cover can be reduced, and a press-fitting process is not needed.

Description

TECHNICAL FIELD

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

[0002] The stator of an electric machine pump is usually naturally cooled or water-cooled, and the rotor is oil-cooled and lubricated. The stator and the rotor need to be sealed and isolated by a barrier cover to achieve dry-wet separation of the stator and the rotor. In the related art, the barrier cover is separately provided and press-fitted into the inner ring of the stator, which is easy to scratch the stator core formed by the silicon steel sheets stacked together, causing the silicon steel sheets to separate and the stator core to be warped, thereby affecting the performance of the electric machine. CONTENT OF THE UTILITY MODEL

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

[0004] According to a first aspect of the embodiments of the present disclosure, a stator assembly is provided, which comprises a barrier cover and a plurality of stator core units arranged in sequence along the circumference of the barrier cover,

[0005] Each of the stator core units comprises a stator core block, a coil winding and an insulating support, the insulating support is mounted on the stator core block, and the coil winding is wound on the insulating support,

[0006] The barrier cover is integrally injection molded and has an integral structure with at least one of the stator core block, the insulating support and the coil winding.

[0007] Optionally, the barrier cover has an inner circumferential wall, a plurality of barrier walls arranged on the inner circumferential wall and spaced apart in the circumferential direction, and end walls at both ends, two adjacent barrier walls and two end walls form a side cavity, and the side cavity is used to accommodate the stator core units.

[0008] Optionally, the stator core block of each stator core unit has a pole shoe, the barrier wall has a root portion integrally arranged between two adjacent pole shoes, and the circumferential width of the root portion is equal in the radial direction of the barrier wall.

[0009] Optionally, the side surface of the barrier wall has a support portion protruding towards the side cavity to support the stator core units.

[0010] Optionally, the support portion is a plurality of support portions arranged in the radial direction, and one of the support portions is arranged close to the root portion.

[0011] Optionally, the insulating support comprises a skeleton body and upper and lower baffles arranged on the skeleton body, and the coil winding is wound on the skeleton body and stopped between the upper and lower baffles;

[0012] The support portion comprises a first support portion capable of filling a first gap between the lower baffle of the insulation support and the pole shoe.

[0013] Optionally, the first support portion has a first support surface and a second support surface at an angle to each other, the first support surface is matched with the shape of the pole shoe and extends to the root portion at one end, and the second support surface is used for bearing the lower baffle of the insulation support.

[0014] Optionally, the support portion further comprises a second support portion for filling a second gap between the lower baffle of the insulation support and the coil winding.

[0015] Optionally, the support portion further comprises a third support portion for filling a third gap between the upper baffle of the insulation support and the coil winding.

[0016] Optionally, the two sides of the isolation wall are respectively provided with the first support portion, the second support portion and the third support portion.

[0017] Optionally, the third support portion is close to an end of the isolation wall away from the inner circumferential wall, and a stop surface is formed between the third support portion and the end to limit the insulation support in the circumferential direction.

[0018] Optionally, the end wall is provided with an opening for the lower baffle of the insulation support to extend into, the opening is a plurality of openings arranged in sequence in the circumferential direction, and the opening is close to the inner circumferential wall in the radial direction.

[0019] Optionally, the two ends of the isolation cover are respectively provided with a support ring protruding outward in the axial direction, and the support ring is coaxially arranged with the inner circumferential wall of the isolation cover.

[0020] Optionally, the support ring and the isolation cover are of an integrated structure.

[0021] According to a second aspect of the embodiments of the present disclosure, a motor is provided, comprising the stator assembly and the rotor assembly.

[0022] Optionally, the motor comprises a housing and first and second end covers for enclosing the stator assembly and the rotor assembly in the housing, and the cavities between the first end cover and the stator assembly and between the second end cover and the stator assembly are respectively filled with potting glue.

[0023] Optionally, the two ends of the isolation cover are respectively provided with a support ring protruding outward in the axial direction, and a sealing member is arranged between the support ring and the corresponding end cover.

[0024] According to a third aspect of the embodiments of the present disclosure, a vehicle is provided, comprising the motor.

[0025] The technical scheme provided by the embodiment of the present disclosure can have the following beneficial effects: in the stator assembly provided by the present disclosure, the components of the stator assembly are fixed and then the injection liquid is poured, the injection liquid can completely fill the gaps between the components of the stator assembly, the isolation cover and the stator assembly are integrated into a one-piece structure, the structural rigidity of the entire stator assembly is significantly improved, and separate pressing is not needed in the later stage, which avoids scratching the stator core formed by the silicon steel sheet stack and prevents the silicon steel sheet from separating and warping, thereby ensuring the performance of the motor, and the integrated injection design can reduce the manufacturing difficulty and cost of separately processing the isolation cover, and the pressing process is not needed, thereby avoiding damage to the stator assembly.

[0026] 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

[0027] 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.

[0028] Figure 1 is a structural schematic diagram of an isolation cover according to an exemplary embodiment.

[0029] Figure 2 is a structural schematic diagram of an isolation cover according to another exemplary embodiment.

[0030] Figures 3 to 5 is a sectional view of an isolation cover according to an exemplary embodiment.

[0031] Figure 6 and Figure 7 is a schematic diagram of an isolation cover and a stator assembly according to an exemplary embodiment.

[0032] Figure 8 is a partial schematic diagram of a stator assembly in a motor according to an exemplary embodiment.

[0033] Figure 9 is a perspective view of a stator assembly in a motor according to an exemplary embodiment.

[0034] Figure 10 is a sectional view of a stator assembly in a motor according to an exemplary embodiment.

[0035] Figures 11 to 13 is an assembly schematic diagram of a stator assembly in a motor according to an exemplary embodiment.

[0036] Figure 14 is a structural schematic diagram of a motor according to an exemplary embodiment.

[0037] Figure 15 is a structural schematic diagram of an electric machine according to an example embodiment.

[0038] Figure 16 is an exploded view of an electric machine according to an example embodiment.

[0039] Figure 17 is a sectional view of an electric machine according to an example embodiment.

[0040] Figure 18 is a partial enlarged view of an electric machine according to an example embodiment.

[0041] BRIEF DESCRIPTION OF DRAWINGS

[0042] 1 - stator assembly; 10 - stator core unit; 101 - first gap; 102 - second gap; 103 - third gap; 11 - stator core block; 111 - pole shoe; 12 - coil winding; 13 - insulation support; 130 - avoiding cavity; 131 - skeleton body; 132 - upper baffle; 133 - lower baffle; 2 - rotor assembly; 20 - rotating shaft; 21 - bearing; 22 - sealing element; 3 - isolation cover; 31 - inner circumferential wall; 310 - inner cavity; 32 - isolation wall; 33 - end wall; 320 - side cavity; 321 - support part; 3211 - first support part; 32111 - first support surface; 32112 - second support surface; 3212 - second support part; 3213 - third support part; 3214 - accommodating groove; 322 - root part; 330 - opening; 4 - support ring; 51 - first end cover; 52 - second end cover; 6 - housing; 61 - cavity. DETAILED DESCRIPTION

[0043] The example embodiments will be described in detail herein with reference to the attached drawings. In the following description, same numbers refer to same elements in all figures. The embodiments described in the following example embodiments do not represent all the implementations consistent with the present disclosure. Instead, they only represent examples of devices and methods consistent with some aspects of the present disclosure, as detailed in the appended claims.

[0044] In the present disclosure, the orientation words such as "axial", "circumferential", "radial" generally refer to the rotation axis of the electric machine provided in the present disclosure, and "inner" and "outer" can refer to the inner and outer of the corresponding component profile or its location inside or outside the environment according to the specific context. In addition, in the following description, same numbers in different figures represent same or similar elements unless otherwise indicated. The terms "first", "second", etc. used in the present disclosure are used to distinguish one element from another element, and do not have sequential and important meanings.

[0045] As Figures 1 to 18 shown, the disclosure provides a stator assembly, which comprises an isolation cover 3 and a plurality of stator core units 10 arranged in sequence along the circumference of the isolation cover 3, each stator core unit 10 comprising a stator core block 11, a coil winding 12 and an insulating support 13, the insulating support 13 being mounted on the stator core block 11, and the coil winding 12 being wound on the insulating support 13, wherein the isolation cover 3 is integrally injection molded and has an integral structure with at least one of the stator core block 11, the insulating support 13 and the coil winding 12.

[0046] Here, it should be noted that the isolation cover 3 is used to isolate the stator assembly 1 and the rotor assembly 2 of the motor, and the isolation cover 3 provided by the disclosure can be a non-metal material, which can form an integral structure with each component of the stator assembly 1 during injection molding. The disclosure includes embodiments in which the isolation cover 3 is integrally formed with at least one of the stator core block 11, the insulating support 13 and the coil winding 12, and also includes embodiments in which all three are integrally formed.

[0047] In the stator assembly 1 provided by the disclosure, the components of the stator assembly 1 are fixed and then the injection liquid is poured, which can completely fill the gap between the components of the stator assembly 1. After molding and demolding, the isolation cover 3 and the stator assembly 1 form an integral structure, and the structural rigidity of the entire stator assembly 1 is significantly improved, without the need for separate pressing in the later stage, avoiding scratching the stator core made of silicon steel sheets, preventing the separation and warping of silicon steel sheets, ensuring the performance of the motor, and using the overall injection design, which can reduce the manufacturing difficulty and cost of separate processing of the isolation cover 3, without the need for a pressing process, avoiding damage to the stator assembly 1.

[0048] In the disclosure, as Figures 1 to 5 shown, the isolation cover 3 has an inner circumferential wall 31, a plurality of isolation walls 32 arranged on the inner circumferential wall 31 and spaced apart along the circumference, and end walls 33 at both ends, the inner cavity 310 of the inner circumferential wall 31 being used to accommodate the rotor assembly 2, and the adjacent two isolation walls 32 and two end walls 33 forming a side cavity 320, the side cavity 320 being used to accommodate the stator core unit 10, wherein the side surface of the isolation wall 32 has a support portion 321 protruding towards the side cavity 320 to support the stator core unit 10.

[0049] In the isolation cover 3 provided in the present disclosure, the rotor assembly 2 can be installed in the inner cavity 310 of the inner peripheral wall 31, and the stator assembly 1 can be installed in the corresponding side cavity 320, so as to realize the physical sealing and isolation of the dry cavity and the oil cavity of the motor stator and rotor; the side surface of the isolation wall 32 is provided with a support portion 321, which can effectively support the stator assembly 1, share the force originally acting on the inner peripheral wall 31, ensure the stability of the stator assembly 1 in the side cavity 320, and improve the overall structural strength; at the same time, the support portion 321 can increase the connection strength of the isolation cover 3 and each component of the stator assembly 1, and improve the rigidity of the entire stator assembly 1.

[0050] The integrally injection-molded isolation cover 3 can completely fill the gap between each component of the stator assembly 1, and the structure of the molded isolation cover 3 depends on the structural design of the stator assembly 1. Here, the structure of the stator assembly 1 is introduced in detail.

[0051] In the present disclosure, as shown in Figure 6 and Figure 10 , the stator assembly 1 includes a plurality of stator core monomers 10 arranged in sequence in the circumferential direction, and each side cavity 320 is provided with a corresponding stator core monomer 10. Exemplarily, as shown in Figures 11 to 13 , each stator core monomer 10 includes a stator core block 11, an insulation support 13, and a coil winding 12 wound on the outer periphery of the insulation support 13. The stator core block 11 has a pole shoe 111, which can be of an I-shaped structure. The insulation support 13 can be designed as two halves spliced in the axial direction and can be installed on the stator core block 11 to realize the insulation between the coil winding 12 and the stator core block 11. The insulation support 13 includes a framework body 131 and upper and lower baffles 132 and 133 provided on the framework body 131. The coil winding 12 is wound on the framework body 131 and stopped between the upper and lower baffles 132 and 133 to form a stator core monomer 10. As shown in Figure 16 , the upper baffle 132 and the framework body 131 form a relief cavity 130 to ensure that the abutted insulation support 13 can be smoothly installed on the stator core block 11. Of course, the stator core monomer 10 provided in the present disclosure is not limited to the above-mentioned structural design, and can be designed as needed.

[0052] As shown in Figure 8As shown, after the two adjacent stator core monomers 10 are fixed, there is a gap between them, and the isolation wall 32 of the isolation cover 3 is used to fill the gap. For each stator core monomer 10, there is a first gap 101 between the pole shoe 111 and the lower baffle 133 of the insulating support 13, and there is a second gap 102 between the coil winding 12 and the lower baffle 133, and there is a third gap 103 between the coil winding 12 and the upper baffle 133. The second gap 102 and the third gap 103 are related to the number of turns and the cross-sectional shape of the wound coil winding 12, and compared with the first gap 101, the winding mode of the coil winding 12 can be controlled to minimize the second gap 102 and the third gap 103.

[0053] Based on the stator core monomer 10 designed according to the above structure, the isolation wall 32 of the isolation cover 3 of the present disclosure has a special structure design. Exemplarily, as shown in Figure 7 The isolation wall 32 has a root base 322 located between the two adjacent pole shoes 111, and the circumferential width of the root base 322 is equal along the radial direction of the isolation wall 32. The shape of the root base 322 is related to the shape of the pole shoe 111, the root base 322 is close to the inner circumferential wall 31, and the circumferential dimension adopts an equal-width structure design, which can increase the connection strength of the bottom of the isolation wall 32 and the inner circumferential wall 31, and provide stable support effect for the stator core monomer 10 in the side cavity 320 on both sides.

[0054] In the present disclosure, the support part 321 can be multiple arranged along the radial direction, and one of them is arranged close to the root base 322. Exemplarily, as shown in Figure 7 As shown, cooperating with the first gap 101, the second gap 102 and the third gap 103, three support parts are formed, the first support part 3211 can fill the first gap 101 between the lower baffle 133 of the insulating support 13 and the pole shoe 111, and the first support part 3211 is closer to the root base 322. The second support part 3212 is used to fill the second gap 102 between the lower baffle 133 of the insulating support 13 and the coil winding 12, and the third support part 3213 is used to fill the third gap 103 between the upper baffle 132 of the insulating support and the coil winding 12. Of course, the number of support parts 321 in the present disclosure is not limited to three, and can be designed according to the structure of the stator core monomer 10.

[0055] As shown in Figure 7As shown, the first support part 3211 has a first support surface 32111 and a second support surface 32112 which are at an included angle, the first support surface 32111 is matched with the shape of the pole shoe 111 and extends to the root part 322 at one end, and the second support surface 32112 is used to bear the lower baffle 133 of the insulation support 13. The first support part 3211, the second support part 3212 and the third support part 3213 can be formed as a similar needle-like protruding structure design, the first support part 3211 protrudes larger in size and plays a main supporting role for the stator core monomer 10 in the opposite cavity 320, and the second support part 3212 and the third support part 3213 can also play an auxiliary supporting role. Figure 1 and Figure 7 As shown, the opposite two first support surfaces 32111 and the outer surface of the inner circumferential wall 31 together form a receiving groove 3214 which is matched with the shape of the pole shoe 111, and the opening of the receiving groove 3214 is communicated with the side cavity 320. The second support surface 32112 is related to the shape of the lower baffle 133, and in this embodiment, the area between the opposite two second support surfaces 32112 is used to accommodate the lower baffle 133. The area between the opposite two second support parts 3212 is used to bear the coil winding 12, and the area between the opposite two third support parts 3213 is used to bear the upper baffle 132 of the insulation support 13.

[0056] A plurality of stator core monomers 10 adopt the same structure design, and the shape and size of the side cavity 320 are the same. In this disclosure, the first support part 3211, the second support part 3212 and the third support part 3213 are respectively arranged on the two sides of the isolation wall 32 to realize the overall symmetrical design and reduce the manufacturing difficulty and processing cost.

[0057] As shown, Figure 7 The third support part 3213 is close to the end of the isolation wall 32 away from the inner circumferential wall 31, and a stop surface is formed between the third support part 3213 and the end to limit the insulation support 13 in the circumferential direction. A stepped surface is formed at the position of the third support part 3213, and the height of the stepped surface can be flush with the upper baffle 132, which can limit the insulation support 13 in the circumferential direction and will not affect the butt joint of the adjacent two stator core blocks 11.

[0058] As shown, Figure 1 As shown, the end wall 33 is provided with an opening hole 330 for the lower baffle 133 of the insulation support 13 to extend into, and the opening hole 330 is a plurality of opening holes arranged in sequence in the circumferential direction. Figure 13 As shown, Figure 15As shown, the part of the upper baffle 132 extending out is used to lead out the coil winding 12 to connect the copper bus bar, and the part of the lower baffle 133 extending out can extend into the corresponding opening 330 to connect and fix the insulating support 13 with the isolation cover 3, further improving the overall structural strength. The position of the opening 330 in the radial direction can be designed according to the position of the lower baffle 133, and in the embodiment, the opening 330 is arranged close to the inner circumferential wall 31 in the radial direction.

[0059] The rotor assembly 2 can include a rotating shaft 20 and a rotor assembly, as shown in Figure 17 As shown, the rotating shaft 20 is provided with bearings 21 at both ends and located outside the isolation cover 3 in the axial direction, so as to realize the isolation and sealing of the part of the rotor assembly 2 extending out of the isolation cover 3. In the present disclosure, as shown in Figure 2 As shown, the isolation cover 3 is provided with support rings 4 protruding outward in the axial direction at both ends, respectively, and the support rings 4 are coaxially arranged with the inner circumferential wall 31, realizing the sealing and isolation design of the dry cavity and the oil cavity.

[0060] The present disclosure includes an embodiment as shown in Figure 1 The support ring 4 and the isolation cover 3 are of a split structure, that is, the support ring 4 can be separately injection molded, and the isolation cover 3 is injection molded with different materials, and then is press-fitted into the isolation cover 3 in the later stage. The present disclosure also includes an embodiment as shown in Figure 2 The support ring 4 and the isolation cover 3 are of an integrated structure, and are integrally injection molded, further ensuring the integrity of the structure.

[0061] According to the second aspect of the present disclosure, a motor is provided, which includes a stator assembly 1, a rotor assembly 2, and an isolation cover 3 for isolating the stator assembly 1 and the rotor assembly 2, and the isolation cover 3 can be the isolation cover introduced in the above embodiments. The stator assembly 1 is physically sealed and isolated from the rotor assembly 2 by the isolation cover 3 integrally injection molded with the inner ring, realizing the separation of the dry cavity and the oil cavity. The motor, as a core component of the automobile active suspension system, adjusts the suspension height through pressure output, can realize high dynamic adjustment of the suspension system of each wheel, ensures the vehicle to be in a stable state on uneven road, and thus improves the driving comfort. The motor has all the beneficial effects of the above-mentioned isolation cover 3, which will not be described in detail here.

[0062] As shown in Figures 14 to 17 The motor includes a housing 6 and first and second end covers 51 and 52 for enclosing the stator assembly 1 and the rotor assembly 2 in the housing 6, and the cavities 61 between the first end cover 51 and the stator assembly 1 and between the second end cover 52 and the stator assembly 1 are respectively filled with potting glue. After the isolation cover 3 and the stator assembly 1 are integrally fixed, the rotor assembly 2 is installed into the inner cavity 310 of the inner circumferential wall 31, and finally the cavities 61 are completely filled with potting glue, ensuring the sealing of the whole motor.

[0063] In the present disclosure, as shown in Figure 17 A sealing member 22 is arranged between the end covers corresponding to the support ring 4, which can further ensure the sealing performance at the position of the support ring 4 and improve the isolation sealing effect.

[0064] According to a third aspect of the present disclosure, a vehicle comprises the electric machine provided by the present disclosure. The vehicle has all the beneficial effects of the isolation cover 3 and the electric machine as described above, which will not be repeated here.

[0065] Furthermore, the word "example" is used herein to mean serving as an example, instance, or illustration. Any implementation described herein as "example" is not necessarily to be construed as preferred or advantageous over other implementations. Rather, the word "example" is used herein to present concepts in a concrete fashion. As used in this application, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or". That is, unless specified otherwise, or as is clear from the context, the statement "X employs A or B" is intended to mean that X employs A or B or both A and B. That is, "X employs A or B" covers any and all combinations of A and B. In addition, the articles "a", "an", and "the" 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, for example, "a" compound can refer to one or more compounds.

[0066] Also, although the present disclosure has been described herein with regard to one or more implementations, those skilled in the art will recognize the interchangeability of many modifications as set forth herein, and the specifics herein are considered merely as examples of the present disclosure. It is therefore intended that the present disclosure encompass all such modifications and variations as fall within the scope of the appended claims. In particular, with respect to the various functions described above with regard to the components (e.g., elements, resources, etc.) described above, unless otherwise specified, the terminology used is intended to correspond to any component that performs the specific function (functionally equivalent) even if not structurally equivalent to the structure disclosed. In addition, although a particular feature of the present 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 "comprising", "including", "carrying", "having", "containing", or variants thereof are used in either the detailed description or the claims, such terms are intended to be inclusive in a manner similar to the term "comprising".

[0067] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features of the disclosure as set forth herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

[0068] It should be understood that the present disclosure is not limited to the precise structures herein described and illustrated in the drawings, and that various modifications and changes can be made therein without departing from the scope thereof. The scope of the present disclosure is indicated by the appended claims, and their equivalents.

[0069] In the above detailed description, reference is made to the accompanying drawings, which show, by way of illustration, specific aspects in which the disclosure can be practiced. In this regard, reference is made to the description of the drawings, in which the orientation of the described figures can be used as a reference for the terms 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 like terms used herein with respect to a given orientation of a described device. Because components of the described devices can be positioned in a number of different orientations, the directional terms are used for purposes of illustration and not limitation. 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.

[0070] It is to be understood that the features of the various aspects of the disclosure described herein can be combined with each other, unless specifically noted 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.

[0071] 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 disclosure, are to be construed broadly, for example, as either fixed connections, or as removable connections, or as integral connections; as either mechanical connections, or as electrical connections, or as communicative connections with each other; as either direct connections, or as indirect connections via intervening medium; as internal connections within two elements, or as interactive relationships between two elements, unless otherwise specifically noted and limited. The specific meanings of the above terms in the present context can be understood by those of ordinary skill in the art according to the specific circumstances.

[0072] Also, the word "over" used in the context of a component, element, or material layer formed "over" or located "over" a surface can be used to mean that the component, element, or material layer is positioned "indirectly" on the surface such that one or more additional components, elements, or layers are arranged between the surface and the component, element, or material layer. However, the word "over" used in the context of a component, element, or material layer formed "over" or located "over" a surface can also optionally have the specific meaning of the component, element, or material layer being positioned "directly" on the surface, e.g., in direct contact with the surface.

[0073] 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 three terms. Instead, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. As such, the first element, component, region, layer or section mentioned in the examples described herein can also be referred to as 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 descriptive purposes only and should not be construed as indicating or implying relative importance or a specific 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, such as two, three, etc., unless otherwise explicitly and specifically limited.

[0074] 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 position 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 relative position of the elements will change, but the spatially relative terms will be interpreted accordingly. The spatially relative terms are used to describe the relative position of the elements in the device as shown in the figures. The device can be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative terms will be interpreted accordingly.

Claims

1. A stator assembly, characterized in that, The stator assembly includes an isolation cover and multiple stator core units disposed on the outer periphery of the isolation cover and arranged sequentially along the circumference. Each stator core unit includes a stator core assembly, a coil winding, and an insulating support. The insulating support is mounted on the stator core assembly, and the coil winding is wound around the insulating support. The isolation cover is integrally injection molded and is an integral structure with at least one of the stator core assembly, the insulating support, and the coil winding.

2. The stator assembly according to claim 1, characterized in that, The isolation cover has an inner peripheral wall, a plurality of isolation walls disposed on the inner peripheral wall and spaced apart in the circumferential direction, and end walls located at both ends. Two adjacent isolation walls and two end walls form a side cavity, which is used to accommodate the stator core unit.

3. The stator assembly according to claim 2, characterized in that, Each stator core unit has a stator core block with pole shoes, and the isolation wall has a root portion integrally disposed between two adjacent pole shoes, with the circumferential width of the root portion being equal along the radial direction of the isolation wall.

4. The stator assembly according to claim 3, characterized in that, The side of the isolation wall has a support portion protruding toward the side cavity to support the stator core unit.

5. The stator assembly according to claim 4, characterized in that, The support portion consists of multiple portions arranged radially at intervals, with one portion located close to the root portion.

6. The stator assembly according to claim 5, characterized in that, The insulating support includes a frame body and an upper baffle and a lower baffle disposed on the frame body, and the coil winding is wound on the frame body and stopped between the upper baffle and the lower baffle; The support portion includes a first support portion capable of filling the first gap between the lower baffle of the insulating bracket and the pole shoe.

7. The stator assembly according to claim 6, characterized in that, The first support portion has a first support surface and a second support surface that form an angle with each other. The first support surface matches the shape of the pole shoe and extends to the base portion at one end. The second support surface is used to support the lower baffle of the insulating bracket.

8. The stator assembly according to claim 6, characterized in that, The support portion further includes a second support portion for filling the lower baffle of the insulating bracket and the second gap between the coil winding.

9. The stator assembly according to claim 8, characterized in that, The support portion also includes a third support portion for filling the upper baffle of the insulating bracket and the third gap between the coil winding.

10. The stator assembly according to claim 9, characterized in that, The isolation wall is provided with the first support part, the second support part and the third support part on its two sides respectively.

11. The stator assembly according to claim 9, characterized in that, The third support portion is located near the end of the isolation wall away from the inner peripheral wall, and forms a stop surface between the third support portion and the end of the third support portion to limit the insulating bracket in the circumferential direction.

12. The stator assembly according to claim 2, characterized in that, The end wall is provided with an opening for the lower baffle of the insulating support to extend into. There are multiple openings arranged sequentially along the circumference, and the openings are close to the inner circumferential wall in the radial direction.

13. The stator assembly according to any one of claims 1-12, characterized in that, The isolation cover has support rings that protrude outward along the axial direction at both ends, and the support rings are arranged coaxially with the inner peripheral wall of the isolation cover.

14. The stator assembly according to claim 13, characterized in that, The support ring and the isolation cover are an integral structure.

15. An electric motor, characterized in that, Includes the stator assembly and rotor assembly as described in any one of claims 1-14.

16. The motor according to claim 15, characterized in that, The motor includes a housing and a first end cover and a second end cover for enclosing the stator assembly and the rotor assembly within the housing, wherein the cavities between the first end cover and the stator assembly, and between the second end cover and the stator assembly, are respectively filled with potting compound.

17. The motor according to claim 15, characterized in that, The isolation cover has support rings that protrude outward along the axial direction at both ends, and a sealing element is provided between the support rings and the corresponding end caps.

18. A vehicle, characterized in that, The motor included in any one of claims 15-17.

Images