Motor stator assembly, motor

Abstract

The application provides a motor stator assembly and a motor, and belongs to the field of motor design.The motor stator assembly comprises a core assembly, the core assembly comprises a stator core and a stator winding wound on the stator core, a first insulation frame body is arranged on the winding leading-out end of the core assembly, a power supply terminal seat assembly is connected to the first insulation frame body, the first insulation frame body has a first ring wall and an isolation ring plate at the end of the first ring wall away from the core assembly, the end of the first ring wall close to the core assembly is connected to the first end of the stator core, the isolation ring plate is arranged on the end of the end portion of the stator winding away from the stator core, and the leading-out wire of the stator winding is connected with the electric conductor of the power supply terminal seat assembly.The application can directly and effectively control the end portion height of the stator winding through the first insulation frame body, meanwhile, the stator winding can be prevented from being damaged, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of motor design, and particularly relates to a motor stator assembly and a motor. BACKGROUND

[0002] At present, after the winding of the stator of the alternating current motor, the power line bundle is first welded with the winding wire head, and then the power line is fixed on the winding end portion through the insulating paper and the binding tape, and the insulation effect between the winding of the stator end portion and the end cover is ensured through the dipping paint. The height of the stator end portion made by this process is difficult to guarantee, and as the placement time of the stator becomes longer, the height of the end portion is prone to rebound. This kind of manufacturing process has more procedures and a complicated process, and it takes a lot of time, so the production efficiency is greatly reduced. In addition, this process of welding the power line bundle with the winding wire head into a stator assembly is not conducive to the production of the power line assembly, and the plastic encapsulation motor made by this process is all injected with the power line bundle, so it is easy to cause the power line skin to bubble during injection, thereby causing the safety problem of the exposure of the power line core, and thus the scrap rate of the process production is also increased, thereby greatly increasing the cost of motor production. SUMMARY

[0003] Therefore, the present application provides a motor stator assembly and a motor, which can solve the technical problems in the prior art that the end portion winding of the stator assembly and the power line need to be separately subjected to insulation treatment measures such as dipping, and procedures such as wrapping and binding, the height of the power line and the winding end portion after binding is difficult to control, and the production efficiency of the motor is low.

[0004] In order to solve the above problems, the present application provides a motor stator assembly, which comprises a core assembly, the core assembly comprises a stator core and a stator winding wound thereon, a first insulation frame body is arranged on the winding lead-out end of the core assembly, a power connection seat assembly is connected to the first insulation frame body, the first insulation frame body has a first ring wall and an isolation ring plate at one end of the first ring wall away from the core assembly, one end of the first ring wall close to the core assembly is connected to a first end of the stator core, the isolation ring plate is arranged on one end of the stator winding end portion away from the stator core, and the lead-out wire of the stator winding is connected with a conductive body of the power connection seat assembly.

[0005] In some embodiments, the first insulation frame body further has a connecting ring plate at one end of the first ring wall close to the core assembly, the connecting ring plate is configured with a avoiding groove at a position corresponding to the end portion of the stator winding; and / or, the connecting ring plate has a connecting column on the end face thereof facing the stator core, and the stator core is configured with a connecting hole on the end face thereof facing the connecting ring plate, and the connecting column is inserted into the connecting hole in an interference fit.

[0006] In some embodiments, the power terminal assembly comprises a connecting seat body, a plurality of the conductive bodies are embedded in the connecting seat body and have exposed first connecting segments and second connecting segments, wherein the first connecting segments are located at the inner side of the first ring wall, and the second connecting segments are located at the outer side of the first ring wall.

[0007] In some embodiments, the power terminal assembly further comprises a power line harness connecting member, the power line harness connecting member is detachably connected with the part of the connecting seat body located at the outer side of the first ring wall, and a power line can be electrically connected with the second connecting segments via the power line harness connecting member.

[0008] In some embodiments, the first connecting segments extend along the axial direction of the stator core, and the second connecting segments extend along the radial direction of the stator core.

[0009] In some embodiments, the power line harness connecting member comprises a harness connecting body, a plurality of terminal holes are formed on the harness connecting body and correspond to the second connecting segments of the plurality of conductive bodies one by one, and / or first elastic hooks are arranged on the first side and the second side of the harness connecting body, first clamping grooves are arranged on the opposite sides of the connecting seat body, and the first elastic hooks are respectively and one by one clamped and connected in the first clamping grooves, and / or second elastic hooks are arranged on the third side and the fourth side of the harness connecting body.

[0010] In some embodiments, the first insulating frame body further comprises a second ring wall, the connecting end of the isolation ring plate and the connecting ring plate is away from the first ring wall, the second ring wall is connected to the connecting end, and the first ring wall is located at the radial outer side of the second ring wall.

[0011] In some embodiments, the first insulating frame body is formed by splicing at least two frame parts along the circumferential direction of the stator core, and the power terminal assembly is connected with one of the at least two frame parts.

[0012] In some embodiments, the frame part has an upper ring plate part, a lower ring plate part, an outer side ring wall part and an inner side ring wall part arranged along the radial direction of the stator core, wherein the first end of the upper ring plate part of one of the two adjacent spliced frame parts is clamped and inserted with the second end of the upper ring plate part of the other of the two adjacent spliced frame parts, and / or the first end of the lower ring plate part of one of the two adjacent spliced frame parts is clamped and inserted with the second end of the lower ring plate part of the other of the two adjacent spliced frame parts.

[0013] In some embodiments, the upper ring plate is formed by assembling a radially inner upper plate and a radially outer upper plate along the radial direction of the stator core, and / or the lower ring plate is formed by assembling a radially inner lower plate and a radially outer lower plate along the radial direction of the stator core.

[0014] In some embodiments, a plurality of first protrusions extending toward the radially outer lower plate are formed on the radially inner lower plate, and a plurality of second protrusions extending toward the radially inner lower plate are formed on the radially outer lower plate. At least one end of the first protrusion is inserted into a corresponding second protrusion, and a clearance groove is formed between two adjacent first protrusions and their corresponding second protrusions.

[0015] In some embodiments, one of the radially inner upper plate and the radially outer upper plate has a positioning groove on its outer end face, and the other has a positioning boss on its outer end face.

[0016] In some embodiments, the first insulating frame body and the connecting seat are integrally injection molded.

[0017] In some embodiments, a second insulating frame body is provided on one end of the core assembly opposite to the winding lead-out end, and the structure of the second insulating frame body is the same as that of the first insulating frame body.

[0018] The present invention also provides an electric motor, particularly an AC motor, comprising the above-described motor stator assembly.

[0019] This invention provides a motor stator assembly and a motor. The first insulating frame body has a first annular wall and an isolation ring plate, which allows the end of the stator winding to be placed within the receiving frame formed by the first insulating frame body. After the stator winding is wound (embedded), the end of the winding does not need to be controlled by production methods such as wrapping with insulating tape, binding with binding tape, or stator impregnation. That is, the height of the stator winding end can be directly and effectively controlled by the first insulating frame body, while avoiding damage to the stator winding and improving production efficiency. Especially when the corresponding motor is an iron-cased motor, the first insulating frame body plays an insulating role, improving the electrical safety of the motor. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the motor stator assembly according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 A three-dimensional structural diagram omitting the stator core and its stator windings;

[0022] Figure 3 for Figure 1A perspective view of one of the frame components in the first or second insulating frame body;

[0023] Figure 4 A perspective view of the frame components in the first or second insulating frame body from another angle; Figure 3

[0024] Figure 5 A perspective view of the frame components in the first or second insulating frame body from another angle; Figure 3

[0025] Figure 6 A perspective view of the frame components in the first or second insulating frame body from another angle; Figure 5

[0026] Figure 7 A perspective view of the frame components in the first or second insulating frame body from another angle; Figure 5

[0027] Figure 8 A perspective view of the frame components in the first or second insulating frame body from another angle; Figure 3

[0028] Figure 9 A perspective view of the frame components in the first or second insulating frame body from another angle; Figure 3

[0029] Figure 10 A perspective view of the frame components in the first or second insulating frame body from another angle; Figure 8

[0030] Figure 11 A perspective view of the frame components in the first or second insulating frame body from another angle;

[0031] Figure 12 A perspective view of the frame components in the first or second insulating frame body from another angle;

[0032] The reference signs are as follows:

[0033] ​​​​​​​1, iron core assembly; 21, first insulation frame body; 211, first ring wall; 212, isolation ring plate; 213, connecting ring plate; 2131, connecting column; 214, avoiding slot; 215, second ring wall; 22, frame split body; 221, upper ring plate split body; 2211, radial inner side upper plate; 2212, radial outer side upper plate; 2213, positioning clamping groove; 2214, positioning boss; 222, lower ring plate split body; 2221, radial inner side lower plate; 2222, radial outer side lower plate; 2223, first convex strip; 22231, elastic buckle insertion strip; 2224, second convex strip; 22241, insertion hole; 223, outer side ring wall split body; 224, inner side ring wall split body; 23, second insulation frame body; 3, power supply terminal block assembly; 31, conductive body; 32, connecting seat body; 33, first clamping groove; 4, power line harness connecting piece; 41, harness connecting body; 42, terminal hole; 43, first elastic clamping hook; 44, second elastic clamping hook; 51, plastic encapsulated motor shell; 52, iron shell. DETAILED DESCRIPTION

[0034] CONJUNCTION WITH Figures 1 to 12 As shown in the drawings, according to the embodiment of the present application, a motor stator assembly is provided, which comprises an iron core assembly 1, the iron core assembly 1 comprising a stator core and a stator winding wound thereon, a first insulation frame body 21 is arranged on the winding outgoing end of the iron core assembly 1, the first insulation frame body 21 may, for example, be made of insulating plastic by injection molding, the first insulation frame body 21 is connected with a power supply terminal block assembly 3, the first insulation frame body 21 has a first ring wall 211 and an isolation ring plate 212 at the end of the first ring wall 211 away from the iron core assembly 1, the end of the first ring wall 211 close to the iron core assembly 1 is connected to the first end of the stator core, the isolation ring plate 212 is arranged on the end of the stator winding away from the stator core, the outgoing wire of the stator winding is connected with a conductive body 31 of the power supply terminal block assembly 3, it can be understood that one end of the conductive body 31 (for example, a conductive column) is connected (for example, welded) with the outgoing wire of the stator winding, and the other end is connected with an external power line, and the first ring wall 211 and the isolation ring plate 212 are free of holes. In this technical solution, the first insulation frame body 21 has the first ring wall 211 and the isolation ring plate 212, which can make the end of the stator winding be in the accommodating frame formed by the first insulation frame body 21, and after the stator winding is wound (wire embedding) is completed, the winding end does not need to be wrapped with insulating tape, tied with a binding belt, or immersed in paint for production to control the stator end, that is, the first insulation frame body 21 can directly and effectively control the stator winding end height, and at the same time, damage to the stator winding can be avoided, and the production efficiency is improved, especially when the corresponding motor is an iron shell motor, the first insulation frame body 21 plays an insulating role, and the electrical safety of the motor is improved.

[0035] In some embodiments, the first insulation frame body 21 further has a connecting ring plate 213 at one end of the first ring wall 211 close to the core assembly 1, and the connecting ring plate 213 is configured with a avoiding slot 214 at a position corresponding to the end of the stator winding, in the technical solution, the connecting ring plate 213 can form a reliable connection with the stator core, for example, the connecting ring plate 213 has a connecting column 2131 on the end face facing the stator core, and the stator core is configured with a connecting hole on the end face facing the connecting ring plate 213, and the connecting column 2131 is inserted into the connecting hole in interference fit. The design of the avoiding slot 214 can also enable the end of the stator winding to be accommodated in the accommodation space formed between the isolation ring plate 212 and the connecting ring plate 213. As a preferred embodiment, see Figure 2 As shown in Figs. 1 and 2, the first insulation frame body 21 further includes a second ring wall 215, and the connecting end of the isolation ring plate 212 and the connecting ring plate 213 away from the first ring wall 211 is connected to the connecting end, and the first ring wall 211 is radially outside the second ring wall 215, and the first ring wall 211 and the second ring wall 215 are preferably concentrically arranged, so that the first ring wall 211, the second ring wall 215, the isolation ring plate 212 and the connecting ring plate 213 form an accommodation space independent of the internal space of the motor, especially the end space of the stator core, and the winding end is completely limited in the accommodation space, which completely eliminates the binding of the wire and effectively guarantees the insulation requirement of the motor.

[0036] Referring to Figs. 1 and 2, Figure 2 and Figure 5 As shown in Figs. 1 and 2, the power terminal assembly 3 includes a connecting seat 32, and a plurality of conductive bodies 31 are embedded in the connecting seat 32 and have exposed first and second connecting sections, wherein the first connecting section is inside the first ring wall 211 to connect with the lead wire of the stator winding, and the second connecting section is outside the first ring wall 211 for connecting with the external power line. In order to ensure the insulation performance, in addition to the aforementioned conductive body 31 being a conductor, other structures such as the connecting seat 32 should be made of an insulating material such as insulating plastic. Further, the power terminal assembly 3 further includes a power line bundle connecting piece 4, which is detachably connected with the part of the connecting seat 32 outside the first ring wall 211, and the power line can be electrically connected with the second connecting section through the power line bundle connecting piece 4. Since the power line bundle connecting piece 4 is detachably connected with the connecting seat 32, the power line bundle connecting piece 4 can be removed from the connecting seat 32 for corresponding injection molding process when it is necessary to injection mold the motor stator assembly to form a plastic encapsulation motor shell 51, that is, the motor plastic encapsulation process does not include the power line bundle, thereby avoiding the risk of power line skin blistering and wire core exposure when the stator assembly is injection molded with the power line bundle, and reducing the scrap rate of the process production. Referring to Figs. 1 and 2, Figure 7As shown, the first connecting segment extends along the axial direction of the stator core, and the second connecting segment extends along the radial direction of the stator core, which means that the conductor 31 forms an L-shaped (i.e., a 90° bend) structure. After the connecting seat 32 is assembled with the first ring wall 211, the first connecting segment extends toward the side away from the stator core, and the second connecting segment extends outward along the radial direction of the stator core, which facilitates the welding of the stator winding lead wires and the connection of the power supply line.

[0037] See details Figure 6 As shown, the power cord harness connector 4 includes a harness connector body 41. The harness connector body 41 has multiple terminal holes 42 that correspond one-to-one with the second connection segments of multiple conductors 31. The cross-section of the terminal holes 42 can be circular or square, etc., and the specific design can be selected according to the shape of the power cord terminals. Of course, the number of terminals can also be matched according to the number of power cord terminals.

[0038] The wire harness connecting body 41 is provided with a first elastic hook 43 on its oppositely arranged first and second sides, for example, with Figure 6 As shown, the first and second sides are the left and right sides of the wire harness connecting body 41, respectively. The connecting base 32 has first slots 33 on opposite sides, and first elastic hooks 43 are respectively attached to the first slots 33. This achieves both left and right positioning of the wire harness connecting body 41 and the connecting base 32, while simultaneously connecting them. Specifically, the first elastic hook 43 can be a deformable T-shaped ear structure. Pressing the outer end of the T-shaped ear structure causes its corresponding inner end to lift up, and releasing the pressure causes its inner end to return to its original position within the first slot 33, thus achieving the purpose of snap-fit ​​connection. This connection method greatly facilitates the connection between the two. Second elastic hooks 44 are provided on the opposite third and fourth sides of the wire harness connecting body 41, similarly for example... Figure 6 The aforementioned orientation, the third and fourth sides are respectively two sides located on the axial direction of the stator core, and the second elastic hook 44 can form a detachable connection with the motor housing (especially when the motor housing is an iron shell 52).

[0039] The aforementioned first insulating frame body 21 can be a monolithic structure. However, monolithic structures are not flexible and convenient to assemble. Therefore, in a preferred embodiment, the first insulating frame body 21 is formed by splicing at least two frame segments 22 along the circumference of the stator core. The power terminal assembly 3 is connected to one of the at least two frame segments 22. See [reference needed]. Figure 5 The frame component 22 shown has protruding or recessed steps at the circumferential edges of the isolation ring plate 212 and the connecting ring plate 213. Multiple frame components 22 can be assembled and combined through the corresponding steps, thereby enabling more flexible and convenient disassembly and assembly of the stator assembly ends.

[0040] With reference to Figure 8 and Figure 9 , the frame part 22 has an upper ring plate part 221, a lower ring plate part 222, and an outer side ring wall part 223 and an inner side ring wall part 224 arranged along the radial direction of the stator core, wherein the first end of the upper ring plate part 221 of one of the two adjacent spliced frame parts 22 is snap-fitted with the second end of the upper ring plate part 221 of the other of the two adjacent spliced frame parts 22, and / or the first end of the lower ring plate part 222 of one of the two adjacent spliced frame parts 22 is snap-fitted with the second end of the lower ring plate part 222 of the other of the two adjacent spliced frame parts 22. The upper ring plate part 221 is formed by splicing a radial inner upper plate 2211 and a radial outer upper plate 2212 along the radial direction of the stator core, and / or the lower ring plate part 222 is formed by splicing a radial inner lower plate 2221 and a radial outer lower plate 2222 along the radial direction of the stator core. That is, in this technical solution, the frame part 22 is further designed as a structure spliced by two inner and outer sub-bodies, so that the end portion of the stator winding can be more conveniently accommodated in the accommodation space formed by the two sub-bodies.

[0041] In some embodiments, a plurality of first protrusions 2223 extending towards the radial outer lower plate 2222 are formed on the radial inner lower plate 2221, and a plurality of second protrusions 2224 extending towards the radial inner lower plate 2221 are formed on the radial outer lower plate 2222, the end of at least one first protrusion 2223 is inserted into the corresponding second protrusion 2224, and the adjacent two first protrusions 2223 and the corresponding second protrusions 2224 form an avoiding slot 214. In specific applications, the first protrusions 2223 and the second protrusions 2224 are adapted to the positions of the stator teeth of the stator core, so that the end portion of the stator winding embedded in each stator slot can circulate around the corresponding first protrusion 2223 and the second protrusion 2224, so that the position of the end portion of the stator winding is limited by the protrusions. Specifically, referring to Figure 8 , the second protrusions 2224 from the second one to the fifth one are provided with insertion holes 22241 extending along the length direction thereof, and the first protrusions 2223 from the second one to the fifth one are provided with elastic buckle insertion strips 22231 extending along the length direction thereof, so that the reliable connection between the inner and outer sub-bodies is achieved by the elastic buckle insertion strips 22231 and the insertion holes 22241.

[0042] Referring to Figure 1 , one of the radial inner upper plate 2211 and the radial outer upper plate 2212 is provided with a positioning clamping groove 2213 on the outer end surface thereof, and the other is provided with a positioning boss 2214 on the outer end surface thereof, which can reliably limit the axial displacement of the first insulating frame body 21.

[0043] The first insulating frame body 21 and the connecting seat 32 are integrally injection molded, thereby simplifying the assembly process of the motor stator assembly.

[0044] A second insulating frame body 23 is provided on one end of the iron core assembly 1 opposite to the winding lead end. The structure of the second insulating frame body 23 is the same as that of the first insulating frame body 21. The difference between the second insulating frame body 23 and the first insulating frame body 21 is that, since the corresponding end of the iron core assembly 1 does not have a winding lead, the second insulating frame body 23 does not have a corresponding connection structure for connecting the power supply line.

[0045] According to an embodiment of the present invention, a motor is also provided, including the motor stator assembly described above. For example... Figure 12 As shown, the motor can be a motor with an iron shell 52. In this case, the power cord harness connector 4 can be connected to the connector body 32 after the end cover is closed, and finally, the power cord harness terminals are inserted one by one into the corresponding terminal holes of the power cord harness connector 4; for example... Figure 11 As shown, the motor can be a molded structure motor with a molded motor housing 51. In this case, the power cord harness connector 4 can be connected to the connector body 32 before injection molding. After injection molding, the power cord harness terminals can be inserted one by one into the corresponding terminal holes of the power cord harness connector 4, thereby achieving injection molding without the power cord harness, so as to avoid the risk of power cord insulation bubbling and exposed wire core when the stator is injection molded with the power cord harness.

[0046] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0047] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above are merely preferred embodiments of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. An electric machine stator assembly comprising a core assembly (1) comprising a stator core and a stator winding wound thereon, characterized in that, The winding outgoing end of the iron core assembly (1) is provided with a first insulation frame body (21), the first insulation frame body (21) is connected with a power terminal seat assembly (3), the first insulation frame body (21) has a first ring wall (211) and an isolation ring plate (212) at the end of the first ring wall (211) away from the iron core assembly (1), the end of the first ring wall (211) close to the iron core assembly (1) is connected to the first end of the stator core, the isolation ring plate (212) is covered on the end of the stator winding away from the stator core, the outgoing wire of the stator winding is connected with the conductive body (31) of the power terminal seat assembly (3); the first insulation frame body (21) is formed by splicing at least two frame parts (22) along the circumference of the stator core, the power terminal seat assembly (3) is connected with one of the at least two frame parts (22); the frame part (22) has an upper ring plate part (221), a lower ring plate part (222), an outer side ring wall part (223) and an inner side ring wall part (224) arranged along the radial direction of the stator core, wherein the first end of the upper ring plate part (221) of one of the two adjacent spliced frame parts (22) is snap-fitted with the second end of the upper ring plate part (221) of the other of the two adjacent spliced frame parts (22); and / or the first end of the lower ring plate part (222) of one of the two adjacent spliced frame parts (22) is snap-fitted with the second end of the lower ring plate part (222) of the other of the two adjacent spliced frame parts (22).

2. The motor stator assembly of claim 1, wherein, The first insulation frame body (21) further has a connecting ring plate (213) at the end of the first ring wall (211) close to the iron core assembly (1), the connecting ring plate (213) is provided with a avoiding slot (214) at the position corresponding to the end of the stator winding; and / or the connecting ring plate (213) has a connecting column (2131) on the end face facing the stator core, the end face of the stator core facing the connecting ring plate (213) is provided with a connecting hole, the connecting column (2131) is inserted into the connecting hole in interference fit.

3. An electric machine stator assembly according to claim 1 or 2, characterized in that The power terminal seat assembly (3) includes a connecting seat body (32), a plurality of conductive bodies (31) are embedded in the connecting seat body (32) and have exposed first and second connecting sections, wherein the first connecting section is inside the first ring wall (211), and the second connecting section is outside the first ring wall (211).

4. The motor stator assembly of claim 3, wherein, The power terminal seat assembly (3) further includes a power line bundle connecting piece (4), the power line bundle connecting piece (4) is detachably connected with the part of the connecting seat body (32) outside the first ring wall (211), and the power line can be electrically connected with the second connecting section through the power line bundle connecting piece (4).

5. The motor stator assembly of claim 3, wherein, The first connecting section extends along an axial direction of the stator core; and the second connecting section extends along a radial direction of the stator core.

6. The motor stator assembly of claim 4, wherein, The power line harness connector (4) comprises a harness connecting body (41) on which a plurality of terminal holes (42) corresponding to the second connecting sections of the plurality of conductive bodies (31) are formed; and / or, first elastic clamping hooks (43) are arranged on opposite first and second sides of the harness connecting body (41), and first clamping grooves (33) are arranged on opposite sides of the connecting seat body (32), and the first elastic clamping hooks (43) are respectively and correspondingly clamped in the first clamping grooves (33); and / or, second elastic clamping hooks (44) are arranged on opposite third and fourth sides of the harness connecting body (41).

7. The motor stator assembly of claim 2, wherein, The first insulation frame body (21) further comprises a second ring wall (215), the isolation ring plate (212) and the connecting ring plate (213) have a connecting end away from the first ring wall (211), and the second ring wall (215) is connected to the connecting end, and the first ring wall (211) is located on the radial outer side of the second ring wall (215).

8. The motor stator assembly of claim 2, wherein, The upper ring plate part (221) is formed by assembling a radial inner side upper plate (2211) and a radial outer side upper plate (2212) along the radial direction of the stator core, and / or the lower ring plate part (222) is formed by assembling a radial inner side lower plate (2221) and a radial outer side lower plate (2222) along the radial direction of the stator core.

9. The motor stator assembly of claim 8, wherein, The radial inner side lower plate (2221) is formed with a plurality of first protrusions (2223) extending towards the radial outer side lower plate (2222), the radial outer side lower plate (2222) is formed with a plurality of second protrusions (2224) extending towards the radial inner side lower plate (2221), and the end of at least one first protrusion (2223) is inserted between the corresponding second protrusion (2224), and the avoidance groove (214) is formed between adjacent two first protrusions (2223) and the corresponding second protrusion (2224).

10. The motor stator assembly of claim 8, wherein, The radial inner side upper plate (2211) and the radial outer side upper plate (2212) are formed with a positioning clamping groove (2213) on the outer side end face of one of them and a positioning protrusion (2214) on the outer side end face of the other.

11. The motor stator assembly of claim 1, wherein, The first insulation frame body (21) and the connecting seat body (32) are integrally injection molded.

12. The motor stator assembly of claim 1, wherein, The iron core assembly (1) is provided with a second insulation frame body (23) at an end opposite to the winding lead-out end, and the second insulation frame body (23) has the same structure as the first insulation frame body (21).

13. An electric machine characterized by The motor stator assembly comprises the motor stator assembly according to any one of claims 1 to 12.

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