Stator assembly, motor and compressor

Abstract

The utility model relates to a stator assembly, a motor and a compressor, the stator assembly comprises a stator iron core, the stator iron core comprises a stator yoke part, a stator tooth base part and a stator tooth end part which are connected in sequence, and two sides of the stator tooth base part, the stator yoke part and the stator tooth end part are respectively enclosed to form a winding groove; the side wall of the winding groove is covered with insulation paper in an attached mode. The upper end and the lower end of the insulation paper are respectively provided with an outer folding edge, each outer folding edge is provided with a first through hole, and the stator yoke part is provided with a first concave hole corresponding to the first through hole. The upper end and the lower end of the insulation paper are respectively provided with a side folding edge, the side folding edges are provided with second through holes, and the base part of the stator tooth is provided with second concave holes corresponding to the second through holes; the upper end face and the lower end face of the stator core are respectively connected with an insulating framework, and the end face of each insulating framework is provided with a first protrusion inserted into the corresponding first concave hole and a second protrusion inserted into the corresponding second concave hole. According to the utility model, copper wire consumption and resistance can be effectively reduced, so that copper material cost is effectively reduced, and motor efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a stator component, a motor and a compressor. Background Art

[0002] At present, the split iron core motor is usually composed of multiple stator cores connected in a circle, and the upper and lower ends of each stator core are respectively inserted with insulating frames, and the two sides of the side teeth of each stator core form winding grooves with the two insulating frames arranged above and below it, and insulating paper is placed on both sides of the winding grooves to prevent the copper wire from directly contacting the stator core when winding.

[0003] As the demand for low cost becomes higher and higher, the height of motors is designed to be lower, but the energy efficiency requirements are getting higher and higher. In order to meet the product safety benchmark requirements, the height of the insulation frame of the current motor is designed to be at least more than 2.5mm. However, the copper wire in this 2.5mm area not only increases the cost of copper material, but also has no effect on improving the energy efficiency of the motor. Instead, it increases resistance and reduces motor efficiency. Utility Model Content

[0004] Based on this, the purpose of the utility model is to solve one of the technical problems existing in the prior art.

[0005] To this end, a first aspect of an embodiment of the utility model proposes a stator assembly.

[0006] A second aspect of the embodiments of the present utility model provides a motor.

[0007] A third aspect of the embodiments of the present utility model provides a compressor.

[0008] In view of this, a first aspect of an embodiment of the utility model provides a stator assembly, comprising a stator core, wherein the stator core comprises a stator yoke, a stator tooth base, and a stator tooth end connected in sequence, and the two sides of the stator tooth base respectively form winding grooves with the stator yoke and the stator tooth end;

[0009] The side wall of the winding groove is covered with insulating paper; the upper and lower ends of the insulating paper are respectively provided with outer folded edges that are in contact with the upper and lower end surfaces of the stator yoke, the outer folded edges are provided with a first through hole, and the stator yoke is provided with a first concave hole corresponding to the first through hole; the upper and lower ends of the insulating paper are respectively provided with side folded edges that are in contact with the upper and lower end surfaces of the stator tooth base, the side folded edges are provided with a second through hole, and the stator tooth base is provided with a second concave hole corresponding to the second through hole;

[0010] The upper and lower end surfaces of the stator core are respectively connected with insulating frames, and the end surface of the insulating frame connected to the stator core is provided with a first protrusion plugged into the first concave hole and a second protrusion plugged into the second concave hole.

[0011] Therefore, the stator assembly proposed in the embodiment of the utility model, the fixing method of the stator core, the insulating paper and the insulating frame is specifically provided with outer folded edges and side folded edges on the upper and lower ends of the insulating paper, and the insulating frame is close to and covers the upper and lower end surfaces of the stator core, and the outer folded edges and side folded edges of the insulating paper are respectively positioned and pressed by the first protrusion and the second protrusion on the insulating frame, so that the two insulating frames and the two insulating papers together form an insulating structure of two winding slots. Under the premise of not occupying the space of the two winding slots as much as possible, the height of the insulating frame can be effectively reduced, thereby reducing the amount and resistance of the copper wire, effectively reducing the material cost and improving the efficiency of the motor.

[0012] As an implementation mode, the insulating skeleton is disposed against the end face of the stator core, and the thickness of the portion of the insulating skeleton that is against the end face of the stator tooth base is 0.5 mm. Therefore, the embodiment of the utility model sets the thickness of the insulating skeleton to 0.5 mm, which is reduced compared to the thickness of the existing insulating skeleton, so that after the stator core is wound with copper wire, the overall height of the copper wire can be reduced, which not only reduces the cost of the copper wire, but also improves the energy efficiency of the stator assembly.

[0013] As an embodiment, the cross-section of the stator core is in an "I" shape, the cross-sections of the winding grooves on both sides of the stator tooth base are in a "U" shape, the side walls of each winding groove are covered with the insulating paper, and the insulating paper is a "U"-shaped opening structure.

[0014] As an embodiment, it further includes a first insulating angle piece, and the connecting corners between the upper end surface of the stator tooth base and the upper end surface of the stator yoke are respectively recessed with a first recess, and the first insulating angle piece includes a first plug-in portion and a first corner portion that are connected to each other, and the first plug-in portion is plugged into the first recess, and the two outer sides of the first corner portion are flush with the side walls of the stator yoke and the stator tooth base, respectively. Therefore, the embodiment of the utility model can form insulating corners on the two side walls at the corners of the upper ends of the stator yoke and the stator tooth base through two first insulating angle pieces, and then make the insulating paper stick to it, so that the insulation of the winding slot is better.

[0015] As an embodiment, it also includes a second insulating angle piece, and the connecting corners between the upper end surface of the stator tooth base and the upper end surface of the stator tooth end are respectively recessed with a second recess, and the second insulating angle piece includes a second plug-in portion and a second corner portion that are connected to each other, and the second plug-in portion is plugged into the second recess, and the two outer sides of the second corner portion are flush with the side walls of the stator tooth end and the upper end of the stator tooth base. Therefore, the embodiment of the utility model can form insulating corners on the two side walls of the corner between the stator tooth end and the upper end of the stator tooth base through two second insulating angle pieces, and then make the insulating paper stick to it, so that the insulation of the winding slot is better.

[0016] As an embodiment, it also includes a third insulating angle piece, and a third recess is respectively provided at the connecting corner between the lower end surface of the stator tooth base and the lower end surface of the stator yoke. The third insulating angle piece includes a third plug-in portion and a third corner portion that are connected to each other. The third plug-in portion is plugged into the third recess, and the two outer sides of the third corner portion are flush with the side walls of the lower ends of the stator yoke and the stator tooth base. Therefore, the embodiment of the utility model can form insulating corners on the two side walls at the corner of the lower end of the stator yoke and the stator tooth base through two third insulating angle pieces, and then make the insulating paper stick to it, so that the insulation of the winding slot is better.

[0017] As an embodiment, it also includes a fourth insulating angle piece, and the connecting corners between the lower end surface of the stator tooth base and the lower end surface of the stator tooth end are respectively recessed with a fourth recess, and the fourth insulating angle piece includes a fourth plug-in portion and a fourth corner portion that are connected to each other, and the fourth plug-in portion is plugged into the fourth recess, and the two outer sides of the fourth corner portion are flush with the side walls of the stator tooth end and the lower end of the stator tooth base. Therefore, the embodiment of the utility model can form an insulating corner for the two side walls at the corner of the stator tooth end and the lower end of the stator tooth base through two fourth insulating angle pieces, and then make the insulating paper stick to it, so that the insulation of the winding slot is better.

[0018] As an embodiment, a skeleton limiting portion is provided on the side wall of the stator yoke away from the base of the stator tooth, and the insulating skeleton is provided with a skeleton limiting piece plugged into the skeleton limiting portion. The insulating skeleton is provided with skeleton plug-in grooves at positions above both sides of the stator tooth end, and the two skeleton plug-in grooves are respectively plugged into the two sides of the stator tooth end, and the insulating paper at least partially extends into the skeleton plug-in grooves. Therefore, the embodiment of the utility model can facilitate the connection and fixation between the insulating skeleton and the stator core by providing two skeleton plug-in grooves on the insulating skeleton, and can also press the upper and lower ends of the side walls of the stator tooth end against each other, so that the insulation of the winding slot is better.

[0019] The second aspect of the embodiment of the utility model provides a motor, the motor includes a stator assembly in any of the above technical solutions. In the technical solution, a motor provided with a stator assembly in any of the above technical solutions is defined, so the motor has the advantages of the stator assembly in any of the above technical solutions and can achieve the technical effects that can be achieved by the stator assembly in any of the above technical solutions. To avoid repetition, it will not be repeated here.

[0020] The third aspect of the embodiment of the utility model provides a compressor, the compressor includes the motor in any of the above technical solutions, therefore, the compressor has the advantages of the motor in any of the above technical solutions, and can achieve the technical effects that can be achieved by the motor in any of the above technical solutions. To avoid repetition, it will not be repeated here.

[0021] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is one of the structural schematic diagrams of the stator assembly of an embodiment of the utility model;

[0023] Figure 2 This is the second structural schematic diagram of the stator assembly of the embodiment of the utility model;

[0024] Figure 3 This is one of the exploded schematic diagrams of the stator assembly of the embodiment of the utility model;

[0025] Figure 4 This is the second exploded schematic diagram of the stator assembly of the embodiment of the utility model;

[0026] Figure 5 This is a schematic structural diagram of a stator core according to an embodiment of the utility model;

[0027] Figure 6 This is an exploded schematic diagram of a stator core of an embodiment of the utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the insulating paper of an embodiment of the utility model;

[0029] Figure 8 This is a schematic diagram of the structure of the insulating frame of an embodiment of the utility model;

[0030] Fig. 9 This is a schematic structural diagram of the first insulating angle piece of an embodiment of the utility model.

[0031] Description of reference numerals:

[0032] 10. stator core; 11. stator yoke; 12. stator tooth base; 13. stator tooth end; 14. frame limiter; 15. first concave hole; 16. second concave hole; 17. first concave part; 18. second concave part; 19. winding groove; 20. insulating paper; 21. outer fold; 22. first through hole; 23. side fold; 24. second through hole; 30. insulating frame; 31. first protrusion; 32. second protrusion; 33. frame limiter; 34. frame plug-in slot; 40. first insulating angle piece; 41. first plug-in part; 42. first corner sealing part; 43. first plug post; 44. second insulating angle piece; 45. third insulating angle piece; 46. fourth insulating angle piece. DETAILED DESCRIPTION

[0033] To further illustrate each embodiment, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention.

[0034] In the description of the present invention, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] As the demand for low cost becomes higher and higher, the height of motors is designed to be lower, but the energy efficiency requirements are getting higher and higher. In order to meet the product safety benchmark requirements, the height of the insulation frame of the current motor is designed to be at least more than 2.5mm. However, the copper wire in this 2.5mm area not only increases the cost of copper material, but also has no effect on improving the energy efficiency of the motor. Instead, it increases resistance and reduces motor efficiency.

[0036] In view of this, the first aspect of the embodiment of the utility model provides a stator assembly, which can effectively reduce the height of the insulation frame while minimizing the space of the two winding slots, thereby reducing the amount and resistance of copper wire, effectively reducing material costs and improving motor efficiency.

[0037] See also Figures 1 to 9; This embodiment provides a stator assembly, a stator core 10, the stator core 10 includes a stator yoke 11, a stator tooth base 12, and a stator tooth end 13 connected in sequence, and the two sides of the stator tooth base 12 are respectively surrounded by the stator yoke 11 and the stator tooth end 13 to form a winding groove 19; the side walls of the winding groove 19 are covered with insulating paper 20; the upper and lower ends of the insulating paper 20 are respectively provided with outer folded edges 21 that are close to the upper and lower end surfaces of the stator yoke 11, and the outer folded edges 21 are provided with a first through hole 22, and the stator yoke 11 is provided with a first through hole 22. The first concave hole 15 corresponding to the through hole 22; the upper and lower ends of the insulating paper 20 are respectively provided with side folds 23 that are close to the upper and lower end surfaces of the stator tooth base 12, the side folds 23 are provided with a second through hole 24, and the stator tooth base 12 is provided with a second concave hole 16 corresponding to the second through hole 24; the upper and lower end surfaces of the stator core 10 are respectively connected with an insulating skeleton 30, and the end surface of the insulating skeleton 30 connected to the stator core 10 is provided with a first protrusion 31 plugged into the first concave hole 15 and a second protrusion 32 plugged into the second concave hole 16. Therefore, when the stator core 10 of the embodiment of the utility model is used as a reference for winding the copper wire, the two insulating skeletons 30 and the two insulating papers 20 together form an insulating structure of two winding slots 19, which can effectively isolate the copper wire from the stator core 10.

[0038] Furthermore, the cross-section of the stator core 10 is in an "I" shape, the cross-sections of the winding slots 19 on both sides of the stator tooth base 12 are in a "U" shape, and the side walls of each winding slot 19 are covered with insulating paper 20, which is a "U"-shaped opening structure.

[0039] Therefore, the stator assembly proposed in the embodiment of the utility model, the fixing method of the stator core 10 and the insulating paper 20 and the insulating frame 30 is specifically provided with an outer folded edge 21 and a side folded edge 23 at the upper and lower ends of the insulating paper 20, and the insulating frame 30 is close to and covers the upper and lower end surfaces of the stator core 10, and at the same time, the outer folded edge 21 and the side folded edge 23 of the insulating paper 20 are respectively positioned and pressed by the first protrusion 31 and the second protrusion 32 on the insulating frame 30, so that the two insulating frames 30 and the two insulating papers 20 together form an insulating structure of two winding grooves 19, and under the premise of not occupying the space of the two winding grooves 19 as much as possible, the height of the insulating frame 30 can be effectively reduced, thereby reducing the amount and resistance of the copper wire, effectively reducing the material cost and improving the efficiency of the motor.

[0040] Among them, the shapes of the first through hole 22 and the second through hole 24 can be circular, square, elliptical, etc. Correspondingly, the shapes of the first concave hole 15 and the second concave hole 16 can be circular, square, elliptical, etc., and the shapes of the first protrusion 31 and the second protrusion 32 can be circular, square, elliptical, etc.

[0041] In some embodiments of the present application, the insulating skeleton 30 is disposed against the end surface of the stator core 10, and the thickness of the portion of the insulating skeleton 30 that is against the end surface of the stator tooth base 12 is 0.5 mm. Therefore, the embodiment of the utility model sets the thickness of the insulating skeleton 30 to 0.5 mm, which is reduced compared to the thickness of the existing insulating skeleton 30, so that after the stator core 10 is wound with copper wire, the overall height of the copper wire can be reduced, which not only reduces the cost of the copper wire, but also improves the energy efficiency of the stator assembly.

[0042] In some embodiments of the present application, a skeleton stopper 14 is provided on the side wall of the stator yoke 11 away from the stator tooth base 12, and the insulating skeleton 30 is provided with a skeleton stopper 33 plugged into the skeleton stopper 14. The insulating skeleton 30 is provided with skeleton plug-in grooves 34 at the positions above the two sides of the stator tooth end 13, and the two skeleton plug-in grooves 34 are respectively plugged into the two sides of the stator tooth end 13, and the insulating paper 20 at least partially extends into the skeleton plug-in grooves 34. Therefore, the embodiment of the utility model can facilitate the connection and fixation between the insulating skeleton 30 and the stator core 10 by providing two skeleton plug-in grooves 34 on the insulating skeleton 30, and can also press the upper and lower ends of the insulating paper 20 against the side wall of the stator tooth end 13, so that the insulation of the winding slot 19 is better.

[0043] In some embodiments of the present application, the stator assembly further includes a first insulating angle piece 40, and the connecting corners between the upper end surface of the stator tooth base 12 and the upper end surface of the stator yoke 11 are respectively recessed with a first recess 17, and the first insulating angle piece 40 includes a first plug-in portion 41 and a first corner portion 42 that are connected to each other, and the first plug-in portion 41 is plugged into the first recess 17, and the two sides of the first corner portion 42 are respectively flush with the two side walls at the corner of the upper end of the stator yoke 11 and the stator tooth base 12. Therefore, the embodiment of the utility model can form an insulating corner for the two side walls at the corner of the upper end of the stator yoke 11 and the stator tooth base 12 through two first insulating angle pieces 40, and then make the insulating paper 20 stick to it, so that the insulation of the winding slot is better.

[0044] Among them, the first recess 17 can be a fan-shaped groove structure, and a first plug hole is opened in the first recess 17. Correspondingly, the shape of the first plug-in portion 41 is adapted to the shape of the first recess 17, and a first plug column 43 connected to the first plug hole is opened on the first plug-in portion 41, so that after the first plug-in portion 41 is further plugged into the first recess 17, the end face of the first plug-in portion 41 can be flush with the end faces of the stator yoke 11 and the stator tooth base 12, so that the end face of the insulating frame 30 can be set against the end face of the stator core 10.

[0045] In some embodiments of the present application, the stator assembly further includes a second insulating angle piece 44, and the connecting corners between the upper end surface of the stator tooth base 12 and the upper end surface of the stator tooth end 13 are respectively recessed with a second recess 18, and the second insulating angle piece 44 includes a second plug-in portion and a second corner portion connected to each other, and the second plug-in portion is plugged into the second recess 18, and the two outer sides of the second corner portion are respectively flush with the side walls of the lower end of the stator tooth end 13 and the stator tooth base 12. Therefore, the embodiment of the utility model can form an insulating corner for the two side walls at the corner of the stator tooth end 13 and the lower end of the stator tooth base 12 through two second insulating angle pieces 44, and then make the insulating paper 20 stick to it, so that the insulation of the winding slot is better.

[0046] Among them, the second recess 18 can be a fan-shaped groove structure, and a second plug hole is opened in the second recess 18. Correspondingly, the shape of the second plug-in portion is adapted to the shape of the second recess 18, and a second plug column connected to the second plug hole is opened on the second plug-in portion, so that after the second plug-in portion and the second recess 18 continue to be plugged in, the end face of the second plug-in portion can be flush with the end faces of the stator yoke 11 and the stator tooth base 12, so that the end face of the insulating frame 30 can be set against the end face of the stator core 10.

[0047] In some embodiments of the present application, the stator assembly further includes a third insulating angle piece 45, and a third recess is provided at the connecting corner between the lower end surface of the stator tooth base 12 and the lower end surface of the stator yoke 11, and the third insulating angle piece 45 includes a third plug-in portion and a third corner portion connected to each other, and the third plug-in portion is plugged into the third recess, and the two outer sides of the third corner portion are respectively flush with the side walls of the lower ends of the stator yoke 11 and the stator tooth base 12. Therefore, the embodiment of the utility model can form an insulating corner for the two side walls at the corner of the lower end of the stator yoke 11 and the stator tooth base 12 through two third insulating angle pieces 45, and then make the insulating paper 20 stick to it, so that the insulation of the winding slot is better.

[0048] Among them, the third recess can be a fan-shaped groove structure, and a third plug hole is opened in the third recess. Correspondingly, the shape of the third plug-in portion is adapted to the shape of the third recess, and a third plug-in column plugged into the third plug hole is opened on the third plug-in portion, so that after the third plug-in portion and the third recess continue to be plugged in, the end face of the third plug-in portion can be flush with the end faces of the stator yoke 11 and the stator tooth base 12, so that the end face of the insulating frame 30 can be set against the end face of the stator core 10.

[0049] In some embodiments of the present application, the stator assembly further includes a fourth insulating angle piece 46, and a fourth recess is respectively provided at the connecting corner between the lower end surface of the stator tooth base 12 and the lower end surface of the stator tooth end 13. The fourth insulating angle piece 46 includes a fourth plug-in portion and a fourth corner sealing portion connected to each other, and the fourth plug-in portion is plugged into the fourth recess, and the two outer sides of the fourth corner sealing portion are respectively flush with the side walls of the lower end of the stator tooth end 13 and the stator tooth base 12. Therefore, the embodiment of the utility model can form an insulating corner for the two side walls at the corner of the stator tooth end 13 and the lower end of the stator tooth base 12 through two fourth insulating angle pieces 46, and then make the insulating paper 20 stick to it, so that the insulation of the winding slot is better.

[0050] Among them, the fourth recess can be a fan-shaped groove structure, and a fourth plug hole is opened in the fourth recess. Correspondingly, the shape of the fourth plug-in portion is adapted to the shape of the fourth recess, and a fourth plug-in column plugged into the fourth plug hole is opened on the fourth plug-in portion, so that after the fourth plug-in portion and the fourth recess continue to be plugged in, the end face of the fourth plug-in portion can be flush with the end faces of the stator yoke 11 and the stator tooth base 12, so that the end face of the insulating frame 30 can be set against the end face of the stator core 10.

[0051] That is to say, the four corners of the winding slot 19 are respectively provided with a first insulating corner piece 40, a second insulating corner piece 44, a third insulating corner piece 45, and a fourth insulating corner piece 46, so as to insulate the four corners of the winding slot 10, and to insulate the gap between the outer fold 21 and the side fold 23 of the insulating paper 20, so as to further improve the safety and reliability of the stator assembly of this embodiment. Among them, the first insulating corner piece 40, the second insulating corner piece 44, the third insulating corner piece 45, and the fourth insulating corner piece 46 can be made of rubber.

[0052] In addition, the second aspect of the embodiment of the utility model provides a motor, which includes the stator assembly in any of the above technical solutions. In this technical solution, a motor provided with the stator assembly in any of the above technical solutions is defined, so the motor has the advantages of the stator assembly in any of the above technical solutions and can achieve the technical effects that can be achieved by the stator assembly in any of the above technical solutions. To avoid repetition, it will not be repeated here.

[0053] In addition, the third aspect of the embodiment of the utility model provides a compressor, the compressor includes the motor in any of the above technical solutions, therefore, the compressor has the advantages of the motor in any of the above technical solutions, and can achieve the technical effects that can be achieved by the motor in any of the above technical solutions. To avoid repetition, it will not be repeated here.

[0054] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the stator assembly, motor and compressor of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A stator assembly, characterized in that: include: A stator core, the stator core comprising a stator yoke, a stator tooth base, and a stator tooth end connected in sequence, wherein two sides of the stator tooth base respectively form winding slots with the stator yoke and the stator tooth end; The side wall of the winding groove is covered with insulating paper; the upper and lower ends of the insulating paper are respectively provided with outer folded edges that are in contact with the upper and lower end surfaces of the stator yoke, the outer folded edges are provided with a first through hole, and the stator yoke is provided with a first concave hole corresponding to the first through hole; the upper and lower ends of the insulating paper are respectively provided with side folded edges that are in contact with the upper and lower end surfaces of the stator tooth base, the side folded edges are provided with a second through hole, and the stator tooth base is provided with a second concave hole corresponding to the second through hole; The upper and lower end surfaces of the stator core are respectively connected with insulating frames, and the end surface of the insulating frame connected to the stator core is provided with a first protrusion plugged into the first concave hole and a second protrusion plugged into the second concave hole.

2. The stator assembly according to claim 1, characterized in that: The insulating frame is arranged in contact with the end surface of the stator core, and the thickness of the portion of the insulating frame in contact with the end surface of the stator tooth base is 0.5 mm.

3. The stator assembly according to claim 1, characterized in that: The cross section of the stator core is in an "I" shape, the cross sections of the winding slots on both sides of the stator tooth base are in a "U" shape, the side walls of each winding slot are covered with the insulating paper, and the insulating paper is a "U"-shaped opening structure.

4. The stator assembly according to claim 3, characterized in that: It also includes a first insulating angle piece, and a first recess is respectively provided at the connecting corner between the upper end surface of the stator tooth base and the upper end surface of the stator yoke. The first insulating angle piece includes a first plug-in portion and a first corner portion that are connected to each other. The first plug-in portion is plugged into the first recess, and the two outer sides of the first corner portion are respectively flush with the side walls of the stator yoke and the stator tooth base.

5. The stator assembly according to claim 4, characterized in that: It also includes a second insulating angle piece, and a second recess is respectively recessed at the connecting corner between the upper end surface of the stator tooth base and the upper end surface of the stator tooth end. The second insulating angle piece includes a second plug-in portion and a second corner portion that are connected to each other. The second plug-in portion is plugged into the second recess, and the two outer sides of the second corner portion are respectively flush with the side walls of the upper ends of the stator tooth end and the stator tooth base.

6. The stator assembly according to claim 3, characterized in that: It also includes a third insulating angle piece, and a third recessed portion is respectively provided at the connecting corner between the lower end surface of the stator tooth base and the lower end surface of the stator yoke. The third insulating angle piece includes a third plug-in portion and a third corner portion which are connected to each other. The third plug-in portion is plugged into the third recessed portion, and the two outer sides of the third corner portion are respectively flush with the side walls of the lower ends of the stator yoke and the stator tooth base.

7. The stator assembly according to claim 6, characterized in that: It also includes a fourth insulating angle piece, and a fourth recess is respectively recessed at the connecting corner between the lower end surface of the stator tooth base and the lower end surface of the stator tooth end. The fourth insulating angle piece includes a fourth plug-in portion and a fourth corner sealing portion that are connected to each other. The fourth plug-in portion is plugged into the fourth recess, and the two outer sides of the fourth corner sealing portion are respectively flush with the side walls of the lower ends of the stator tooth end and the stator tooth base.

8. The stator assembly according to claim 1, characterized in that: A skeleton limiting portion is provided on the side wall of the stator yoke away from the base of the stator tooth, and the insulating skeleton is provided with a skeleton limiting piece plugged into the skeleton limiting portion; the insulating skeleton is provided with skeleton plugging grooves at positions above both sides of the stator tooth end, and the two skeleton plugging grooves are respectively plugged into the two sides of the stator tooth end, and at least part of the insulating paper extends into the skeleton plugging grooves.

9. A motor, characterized in that: Comprising the stator assembly according to any one of claims 1 to 8.

10. A compressor, characterized in that: Comprising the motor as claimed in claim 9.

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