阅读说明：本技术 绝缘结构、电机 (Insulation system, motor ) 是由 彭子燕 卢冠成 李尚平 龙芳 何超燕 于 2020-11-23 设计创作，主要内容包括：本申请提供一种绝缘结构、电机,包括绝缘件,所述绝缘件设置在定子内,所述定子至少包括相邻的第一齿和第二齿,所述第一齿上绕设有第一线圈,所述第二齿上绕设有第二线圈,所述绝缘件包括相间绝缘段,所述相间绝缘段设置在所述第一线圈与所述第二线圈之间。一种绝缘结构、电机,能够增加相间的爬电距离,增强电机电气安全,并能提升线圈的槽满率,进而提升电机性能。(The application provides an insulation system, motor, including the insulating part, the insulating part sets up in the stator, the stator includes adjacent first tooth and second tooth at least, around being equipped with first coil on the first tooth, around being equipped with the second coil on the second tooth, the insulating part includes alternate insulating section, alternate insulating section sets up first coil with between the second coil. The utility model provides an insulation system, motor, can increase alternate creepage distance, reinforcing motor electrical safety to can promote the full rate in groove of coil, and then promote the motor performance.)

1. The utility model provides an insulation system, its characterized in that, includes insulating part (1), insulating part (1) sets up in the stator, the stator includes adjacent first tooth and second tooth at least, around being equipped with first coil (2) on the first tooth, around being equipped with second coil (2) on the second tooth, insulating part (1) includes alternate insulating section, alternate insulating section sets up first coil (2) with between the second coil (2).

2. The insulation structure of claim 1 further comprising an in-slot insulation segment, wherein the stator comprises a stator slot, and wherein the in-slot insulation segment is located within the stator slot.

3. The insulation structure of claim 2 wherein the interphase insulation segment meets the in-slot insulation segment.

4. The insulation structure of claim 2, wherein the interphase insulation segment includes a first insulation segment disposed at a first end of the in-slot insulation segment and a second insulation segment disposed at a second end of the in-slot insulation segment.

5. An insulation structure according to claim 4, characterized in that the in-slot insulation section comprises a first face (11), a second face (12) and a third face (13) connected in sequence, the first face (11), the second face (12) and the third face (13) being arranged against the inner wall of the stator slot.

6. An insulation structure according to claim 5, characterized in that the first face (11), the second face (12) and the third face (13) enclose a reentrant structure.

7. An insulation structure according to claim 5, characterized in that the opening of the stator slot is provided with a first inner turn-up and a second inner turn-up, which extend towards each other, the insulation section further comprises a fourth face (14) and a fifth face (15), the fourth face (14) is connected to the first face (11), the fifth face (15) is connected to the third face (13), the fourth face (14) is arranged to abut against the inner wall of the first inner turn-up, and the fifth face (15) is arranged to abut against the inner wall of the second inner turn-up.

8. Insulation structure according to claim 7, characterized in that said first face (11) is arranged symmetrically to said third face (13) and said fourth face (14) is arranged symmetrically to said fifth face (15).

9. An insulation structure according to claim 7, characterized in that the first and second insulation segments are inserted into the stator slot, the first insulation segment enclosing with the first (11), second (12) and fourth (14) faces an insulation space, a section of the first coil (2) adhering to the inner wall of the stator slot being located in the first insulation space, the second insulation segment enclosing with the second (12), third (13) and fifth (15) faces a second insulation space, a section of the second coil (2) adhering to the inner wall of the stator slot being located in the second insulation space.

10. Insulation structure according to claim 5, characterized in that the first and/or the second insulation segment is/are abutting against the second face (12).

11. The insulation structure according to claim 4, characterized in that a clamping section (191) is arranged on the first insulation section and/or the second insulation section, and the first insulation section and the second insulation section are clamped through the clamping section (191).

12. An insulation structure according to claim 7, characterized in that the first insulation section comprises a sixth face (16) and a seventh face (17), the sixth face (16) meeting the fourth face (14), the sixth face (16) forming a V-shaped structure with the seventh face (17), the second insulation section comprising an eighth face (18) and a ninth face (19), the eighth face (18) meeting the fifth face (15), the eighth face (18) forming a V-shaped structure with the ninth face (19).

13. An insulation structure according to claim 12, characterized in that the projection of the sixth face (16) in the plane of the end faces of the stator has a length L1, the projection of the seventh face (17) in the plane of the end faces of the stator has a length L2, L2 > L1, the projection of the eighth face (18) in the plane of the end faces of the stator has a length L3, the projection of the ninth face (19) in the plane of the end faces of the stator has a length L4, L4 > L3.

14. The insulation structure of claim 13, wherein the stator slots have a slot depth of H1, L1+ L2 < 1.5H1, L3+ L4 < 1.5H 1.

15. The insulation structure according to claim 2, wherein the length of the inter-phase insulation segments in the axial direction of the stator is L5, the length of the in-slot insulation segments in the axial direction of the stator is L6, and L5 is equal to or greater than L6.

16. An electrical machine comprising an insulation structure according to any one of claims 1-15.

Technical Field

This application belongs to motor technical field, concretely relates to insulation system, motor.

Background

The stator winding mode that current inverter compressor was concentrated in the adoption for providing motor performance and reduce cost mostly, and present most stator only is provided with slot insulation system, does not set up alternate insulation system, leads to keeping great distance between the double-phase in same groove to guarantee electrical safety, and then the full rate in groove that has led to the stator is lower. As shown in the formula I, the copper loss of the motor is inversely proportional to the wire diameter of the winding, and the slot fullness rate S is not equal to D, so that the lower the slot fullness rate of the motor is, the smaller the wire diameter D used by the winding is, the larger the copper loss of the motor is, the motor loss is increased according to the formula II, and the efficiency is reduced.

Wherein the content of the first and second substances,

P_cu-motor copper losses;

I_{phase (C)}-motor stator phase current;

R_{phase (C)}-a motor phase resistance;

ρ is winding resistivity;

l is the stator phase winding length;

d is the diameter of the winding.

P＝P_cu+P_Fe+P_mec+P_ad ②

Wherein the content of the first and second substances,

p is motor loss;

P_cu-motor copper losses;

P_FE-motor iron losses;

P_mec-mechanical losses of the motor;

P_ad-motor parasitic losses.

Disclosure of Invention

Therefore, the technical problem that this application will be solved lies in providing an insulation system, motor, can increase alternate creepage distance, reinforcing motor electrical safety to can promote the full rate of groove of coil, and then promote the motor performance.

In order to solve the above problem, the application provides an insulation structure, including the insulating part, the insulating part sets up in the stator, the stator includes adjacent first tooth and second tooth at least, around being equipped with first coil on the first tooth, around being equipped with the second coil on the second tooth, the insulating part includes phase-to-phase insulation section, phase-to-phase insulation section sets up first coil with between the second coil.

Optionally, the insulation structure further comprises an in-slot insulation segment, the stator comprises a stator slot, and the in-slot insulation segment is located in the stator slot.

Optionally, the interphase insulating section is connected to the in-slot insulating section.

Optionally, the inter-phase insulation segment includes a first insulation segment and a second insulation segment, the first insulation segment is disposed at a first end of the in-slot insulation segment, and the second insulation segment is disposed at a second end of the in-slot insulation segment.

Optionally, the in-slot insulation segment includes a first surface, a second surface and a third surface that are connected in sequence, and the first surface, the second surface and the third surface are attached to the inner wall of the stator slot.

Optionally, the first face, the second face and the third face enclose a concave structure.

Optionally, the opening part of stator slot sets up turn-ups in first interior turn-ups and the second, turn-ups extend in opposite directions in first interior turn-ups and the second, the inslot insulating section still includes fourth face and fifth face, the fourth face with first face meets, the fifth face with the third face meets, the fourth face paste in the inner wall setting of first interior turn-ups, the fifth face paste in the inner wall setting of turn-ups in the second.

Optionally, the first surface and the third surface are symmetrically arranged, and the fourth surface and the fifth surface are symmetrically arranged.

Optionally, the first insulating section and the second insulating section are inserted into the stator slot, the first insulating section, the first surface, the second surface, and the fourth surface enclose a first insulating space, a section of the first coil attached to the inner wall of the stator slot is located in the first insulating space, a second insulating space is enclosed by the second insulating section, the second surface, the third surface, and the fifth surface, and a section of the second coil attached to the inner wall of the stator slot is located in the second insulating space.

Optionally, the first insulating segment and/or the second insulating segment abuts against the second surface.

Optionally, a clamping section is arranged on the first insulation section and/or the second insulation section, and the first insulation section and the second insulation section are clamped together through the clamping section.

Optionally, the first insulating section includes a sixth surface and a seventh surface, the sixth surface is connected to the fourth surface, the sixth surface and the seventh surface form a V-shaped structure, the second insulating section includes an eighth surface and a ninth surface, the eighth surface is connected to the fifth surface, and the eighth surface and the ninth surface form a V-shaped structure.

Optionally, a projection of the sixth surface on the plane of the end face of the stator is L1, a projection of the seventh surface on the plane of the end face of the stator is L2, L2 > L1, a projection of the eighth surface on the plane of the end face of the stator is L3, a projection of the ninth surface on the plane of the end face of the stator is L4, and L4 > L3.

Optionally, the groove depth of the stator groove is H1, L1+ L2 < 1.5H1, and L3+ L4 < 1.5H 1.

Optionally, the length of the inter-phase insulation segment in the axial direction of the stator is L5, the length of the in-slot insulation segment in the axial direction of the stator is L6, and L5 is greater than or equal to L6.

In another aspect of the present application, there is provided an electric machine including an insulation structure as described above.

Advantageous effects

The insulating structure and the motor provided by the embodiment of the invention can increase the creepage distance between phases, enhance the electrical safety of the motor, and improve the slot filling rate of the coil, thereby improving the performance of the motor.

Drawings

FIG. 1 is a schematic view of an insulator according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of an expanded structure of an insulating member according to an embodiment of the present application;

FIG. 3 is a schematic view of an insulator according to an embodiment of the present application inserted into a stator;

fig. 4 is a schematic structural diagram of a stator in which coils are installed according to an embodiment of the present application.

The reference numerals are represented as:

1. an insulating member; 11. a first side; 12. a second face; 13. a third surface; 14. a fourth surface; 15. a fifth aspect; 16. a sixth side; 17. a seventh aspect; 18. the eighth aspect; 19. a ninth aspect; 191. a clamping section; 2. and a coil.

Detailed Description

Referring to fig. 1 to 4 in combination, according to an embodiment of the present application, an insulation structure includes an insulation member 1, the insulation member 1 is disposed in a stator, the stator includes at least a first tooth and a second tooth, the first tooth is wound with a first coil 2, the second tooth is wound with a second coil 2, the insulation member 1 includes an interphase insulation section, the interphase insulation section is disposed between the first coil 2 and the second coil 2, the first coil 2 and the second coil 2 form two adjacent phases, and by disposing the interphase insulation section, the two adjacent phases in the stator can be completely separated, can greatly increase the creepage distance between phases, further greatly improve the full rate of the slot, and simultaneously when the stator is used under the condition of high voltage, the full rate of motor groove can be guaranteed, the creepage distance between two phases can be guaranteed simultaneously, the interphase short circuit can not be caused, and the electric arc phenomenon which occurs when the creepage distance is small and the interphase potential difference exists can not occur.

Further, the stator may include a plurality of teeth therein, and the first tooth and the second tooth may be adjacent two of the plurality of teeth. The plurality of teeth are all wound with coils 2, and the first coil 2 and the second coil 2 are the coils 2 wound on the adjacent teeth respectively.

Further, the insulating member 1 is made of an insulating material.

The insulation structure further comprises an in-slot insulation section, the stator comprises a stator slot, and the in-slot insulation section is located in the stator slot. The insulation of the stator slot is realized by arranging the insulating section in the slot.

Further, the in-slot insulation segments are inserted into the stator slots.

The interphase insulation section is connected with the in-slot insulation section, so that the insulation part 1 can be stably fixed in the stator.

Furthermore, the in-groove insulation section and the inter-phase insulation section are made of an integrated insulation material, so that the inter-phase insulation section is fixed in all directions, and the problems of axial displacement and falling cannot occur in operation. Meanwhile, the insulating material with the insulating sections in the grooves and the insulating sections between the grooves integrated is convenient for automatic production, the process procedures are reduced, the production cost is reduced, and the industrial automation degree is improved.

The interphase insulating section comprises a first insulating section and a second insulating section, the first insulating section is arranged at the first end of the insulating section in the groove, and the second insulating section is arranged at the second end of the insulating section in the groove. By dividing the phase insulation section into the first insulation section and the second insulation section, and making the first insulation section and the second insulation section respectively located at the two ends of the insulation section in the slot, it can be further ensured that the two adjacent phases in the stator are completely separated.

Further, the first end and the second end of the second insulating section are two ends of the second insulating section along the circumferential direction of the stator.

The inslot insulating segment includes consecutive first face 11, second face 12 and third face 13, and first face 11, second face 12 and third face 13 paste in the inner wall setting of stator slot, through setting up first face 11, second face 12 and third face 13, have guaranteed the insulating effect to the stator slot.

Further, the first face 11, the second face 12, and the third face 13 are arranged in this order along the circumferential direction of the stator slot.

Further, the first surface 11 and the third surface 13 are symmetrically disposed about a center line of the second surface 12.

Furthermore, the first surface 11 is attached to a first inner wall of the stator slot, the second surface 12 is attached to a second inner wall of the stator slot, the third surface 13 is attached to a third inner wall of the stator slot, the first inner wall and the third inner wall are arranged oppositely, and the second inner wall is located between the first inner wall and the second inner wall.

Further, the second inner wall is a groove bottom, and the second surface 12 is insulation of the groove bottom. The first face 11 and the third face 13 are opposite wall insulation.

The first face 11, the second face 12 and the third face 13 enclose a concave structure and can be stably attached to the inner wall of the stator slot, so that the insulating section in the slot is firmly installed.

The opening part of stator slot sets up turn-ups in first and the second, and turn-ups extends in opposite directions in first and the second, and the inslot insulating segment still includes fourth face 14 and fifth face 15, and fourth face 14 meets with first face 11, and fifth face 15 meets with third face 13, and the inner wall setting of turn-ups in first is pasted to fourth face 14, and the inner wall setting of turn-ups in the second is pasted to fifth face 15. Through setting up turn-over in first turn-over and the second, guaranteed that coil 2 can be spacing firm.

Further, the first inner turnover face and the second inner turnover face are groove shoulders, and the fourth face 14 and the fifth face 15 are groove shoulder insulators.

Further, the first inner turnover face and the second inner turnover face extend towards the opening direction of the stator slot, namely extend towards the inside of the stator slot.

Furthermore, the first inner turnover surface and the second inner turnover surface are symmetrically arranged.

First face 11 and the symmetrical setting of third face 13, fourth face 14 and the symmetrical setting of fifth face 15 have guaranteed the stability of inslot insulating section.

The first insulation section and the second insulation section are inserted into the stator slot, the first insulation section, the first face 11, the second face 12 and the fourth face 14 form a first insulation space in a surrounding mode, one section of the first coil 2 attached to the inner wall of the stator slot is located in the first insulation space, the second insulation section, the second face 12, the third face 13 and the fifth face 15 form a second insulation space in a surrounding mode, one section of the second coil 2 attached to the inner wall of the stator slot is located in the second insulation space, by enclosing the first insulation space and the second insulation space, the insulation of two adjacent phases is realized, the creepage distance between phases is greatly increased, the full rate of the slot can be greatly improved, and simultaneously when the stator is used under the condition of high voltage, the full rate of motor groove can be guaranteed, the creepage distance between two phases can be guaranteed simultaneously, the interphase short circuit can not be caused, and the electric arc phenomenon which occurs when the creepage distance is small and the interphase potential difference exists can not occur.

Further, the first coil 2 penetrates through an opening on one side of the first insulating space and penetrates through an opening on the other side. The second coil 2 penetrates through the opening on one side of the second insulating space and penetrates out of the opening on the other side.

The first insulating section and/or the second insulating section are/is abutted against the second surface 12, so that the first insulating space and the second insulating space form a closed loop, complete isolation of two adjacent phases is ensured, and short circuit is avoided.

Further, in this embodiment, the first insulating segment abuts against the second insulating segment, and the second insulating segment abuts against the inner wall of the second surface 12.

Be provided with joint section 191 on first insulation section and/or the second insulation section, first insulation section passes through joint section 191 looks joint with the second insulation section, can guarantee the stability of first insulation section and second insulation section, avoids first insulation section and second insulation section to deviate from.

Further, in this embodiment, the first insulating section is not provided with the clamping section 191, and the second insulating section is provided with the clamping section 191.

Further, the clamping section 191 is acute, and the free end of the first insulation section is clamped in an acute angle formed by the clamping section 191.

Further, when the first insulating section is clamped with the second insulating section, the first insulating section and the second insulating section are located in a concave structure formed by the first face 11, the second face 12 and the third face 13 in a surrounding mode.

Further, when the first insulating section is clamped with the second insulating section, the opening of the clamping section 191 faces the notch direction of the stator slot.

The first insulating section comprises a sixth surface 16 and a seventh surface 17, the sixth surface 16 is connected with the fourth surface 14, the sixth surface 16 and the seventh surface 17 form a V-shaped structure, the second insulating section comprises an eighth surface 18 and a ninth surface 19, the eighth surface 18 is connected with the fifth surface 15, and the eighth surface 18 and the ninth surface 19 form a V-shaped structure, so that interaction force exists between the first insulating section and the second insulating section, and the first insulating section and the second insulating section can be effectively attached.

Further, the sixth surface 16 and the seventh surface 17 form an obtuse angle. The angle formed by the eighth face 18 and the ninth face 19 is obtuse.

Furthermore, a clamping section 191 is arranged at the end of the ninth surface 19 facing away from the eighth surface 18.

Further, when the first insulating section is clamped with the second insulating section, the opening of the V-shaped structure of the first insulating section is opposite to the opening of the V-shaped structure of the second insulating section.

The length of a projection of the sixth surface 16 in the plane of the end face of the stator is L1, the length of a projection of the seventh surface 17 in the plane of the end face of the stator is L2, L2 is greater than L1, the length of a projection of the eighth surface 18 in the plane of the end face of the stator is L3, the length of a projection of the ninth surface 19 in the plane of the end face of the stator is L4, and L4 is greater than L3, so that the first insulating section and the second insulating section have enough interaction force, and the first insulating section and the second insulating section are prevented from protruding out of the notches.

The depth of the stator slot is H1, L1+ L2 is less than 1.5H1, L3+ L4 is less than 1.5H1, and the interphase insulation section is ensured not to protrude out of the slot opening.

Furthermore, the groove depth of the stator groove is the linear distance between the notch of the stator groove and the groove bottom.

The length of the interphase insulation section in the axial direction of the stator is L5, the length of the in-slot insulation section in the axial direction of the stator is L6, and L5 is more than or equal to L6. The stator ends can be separated by insulating materials, and the creepage distance of the ends can be increased.

Furthermore, two ends of the interphase insulating section in the axial direction of the stator exceed the in-slot insulating section.

After the insulating part 1 is inserted into the stator slot, the stator slot is tightly attached to the insulating section in the slot, the phase-to-phase insulating section is unfolded towards the slot opening and is pulled and fixed by a clamp, and after the forming, when the stator is embedded with wires, the winding process of the winding nozzle cannot be influenced, and the winding is the same as that of the conventional stator production mode. After the stator rule was accomplished, turn over first insulation section and second insulation section by the notch position and turn over and fold into, there is interact power in first insulation section and the second insulation section, makes first insulation section and second insulation section can effectively laminate to fix through joint section 191, make alternate insulation section more firm.

In another aspect of the present embodiment, there is provided an electric machine including the insulation structure as described above.

Further, the motor may be a permanent magnet synchronous motor.

The insulating structure and the motor provided by the embodiment of the invention can increase the creepage distance between phases, enhance the electrical safety of the motor, and improve the slot fullness rate of the coil 2, thereby improving the performance of the motor.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.