Stator, motor and compressor

Abstract

The utility model discloses a stator, motor and compressor relates to motor equipment technical field, the stator includes stator core and insulating frame subassembly, stator core includes stator yoke and be located stator yoke radial inner side and circumferentially distributed a plurality of stator teeth, every two adjacent stator teeth form the stator slot, and the stator core includes the stator yoke and the plurality of stator teeth. The insulating frame assembly comprises a first frame and a second frame which are adjacently arranged, and the main bodies of the first frame and the second frame are respectively sleeved on two adjacent stator teeth; a first joint part is arranged on the radial inner side of the first frame, a second joint part is arranged on the radial inner side of the second frame, and the first joint part and the second joint part located in the same stator groove are overlapped by a preset distance in the circumferential direction. The utility model aims to increase the electrical clearance and creepage distance of the stator through the insulation frame assembly, and improve the electrical safety distance and the insulation and voltage endurance capability of the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of motor equipment, and particularly relates to a stator, a motor and a compressor. Background Art

[0002] The tooth-yoke separated stator has the advantages of high slot fill factor, high precision, high structural stiffness, etc., so it has been more and more widely used in the field of motors. Usually, an insulating frame assembly is installed on the stator teeth of the tooth-yoke separated stator to isolate the winding group. However, there will be a gap between two insulating frame assemblies installed on adjacent two stator teeth. This gap will directly expose the magnetic bridge part between adjacent two stator teeth to the winding group, resulting in too small electrical clearance and creepage distance between the enameled wire in the winding group and the magnetic bridge, so that the electrical safety distance is small and the insulation withstand voltage ability of the motor is reduced. Summary of the Utility Model

[0003] The main purpose of the utility model is to provide a stator, a motor and a compressor, aiming to increase the electrical clearance and creepage distance of the stator, and improve the electrical safety distance and the insulation withstand voltage ability of the motor.

[0004] To achieve the above object, the utility model provides a stator, which comprises a stator core and an insulating frame assembly. The stator core includes a stator yoke and a plurality of stator teeth circumferentially distributed on the radial inner side of the stator yoke. A stator slot is formed between two adjacent stator teeth. The insulating frame assembly includes a first frame and a second frame arranged adjacent to each other. The main bodies of the first frame and the second frame are respectively sleeved on two adjacent stator teeth.

[0005] The first frame is provided with a first joint part along the radial inner side of the stator tooth, and the second frame is provided with a second joint part along the radial inner side of the stator tooth. The first joint part and the second joint part located in the same stator slot overlap a preset distance in the circumferential direction.

[0006] In one embodiment, the first joint part includes a first connecting section and a first convex section connected to each other, and the first connecting section is connected to the main body.

[0007] The second joint part includes a second connecting section and a second convex section connected to each other, and the second connecting section is connected to the main body.

[0008] At least part of the first convex section and at least part of the second convex section are overlapped or spaced from each other along the radial direction of the stator tooth.

[0009] In one embodiment, the first convex section is provided with a first notch, and at least part of the second convex section extends into the first notch.

[0010] In one embodiment, the second convex segment is provided with a second notch, and at least part of the first convex segment extends into the second notch.

[0011] In one embodiment, the thickness of the first convex segment in the radial direction of the stator tooth gradually increases from one end extending into the second notch to one end connected to the first connecting segment.

[0012] In one embodiment, the first connecting segment includes a first side wall and a first winding wall connected to each other. The first side wall is connected to the first convex segment, and the first winding wall is connected to the main body;

[0013] The plane where the first winding wall is located and the plane where the first side wall is located are arranged at an acute angle.

[0014] In one embodiment, the second convex segment includes a second side wall and a second winding wall connected to each other. The second side wall is arranged opposite and spaced apart from the first side wall, and the second winding wall is connected to the main body;

[0015] The plane where the second side wall is located and the plane where the second winding wall is located are arranged at an acute angle.

[0016] In one embodiment, the insulating frame assembly includes a plurality of the first frames and a plurality of the second frames, and the first frames and the second frames are arranged alternately so that one second frame is arranged between two adjacent first frames.

[0017] In one embodiment, at least part of the second engaging portion is located on a side of the first engaging portion away from the bottom wall of the stator slot;

[0018] Or, at least part of the first engaging portion is located on a side of the second engaging portion away from the bottom wall of the stator slot.

[0019] In one embodiment, the insulating frame assembly further includes a third frame. The third frame includes a third engaging portion and a fourth engaging portion. The structure of the third engaging portion is the same as the structure of the first engaging portion, and the structure of the fourth engaging portion is the same as the structure of the second engaging portion;

[0020] The third frame is located between the first frame and the second frame. The third engaging portion and the second engaging portion located in the same stator slot overlap a preset distance in the circumferential direction, and the fourth engaging portion and the first engaging portion located in the same stator slot overlap a preset distance in the circumferential direction.

[0021] In one embodiment, the main body includes:

[0022] An outer baffle; and

[0023] The winding rack is connected to the outer baffle, and the winding rack forms a slot through which it is inserted into the stator teeth.

[0024] The first engaging portion or the second engaging portion is connected to one end of the winding rack away from the outer baffle.

[0025] The present utility model also provides a motor, which includes the stator as described above.

[0026] The present utility model also provides a compressor, which includes the motor as described above.

[0027] The stator of the technical solution of the present utility model includes a stator core and an insulating frame assembly. The stator core includes a stator yoke and a plurality of stator teeth circumferentially distributed on the radial inner side of the stator yoke. A stator slot is formed between two adjacent stator teeth. The insulating frame assembly includes a first frame and a second frame. The main bodies of the first frame and the second frame are respectively sleeved on two adjacent stator teeth. The first frame is provided with a first engaging portion along the radial inner side of the stator tooth, and the second frame is provided with a second engaging portion along the radial inner side of the stator tooth. The first engaging portion and the second engaging portion in the same stator slot overlap a preset distance in the circumferential direction, that is, at least part of the structures of the first engaging portion and the second engaging portion overlap in the radial direction of the stator tooth, so as to increase the distance between the wire group wound on the main body and the bottom wall of the stator slot, so as to increase the electrical clearance and creepage distance, and improve the electrical safety distance and the insulation withstand voltage ability of the motor. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0029] Figure 1 It is a schematic structural diagram of the first frame in an embodiment of the present utility model;

[0030] Figure 2 It is a schematic structural diagram of the second frame in an embodiment of the present utility model;

[0031] Figure 3 It is a schematic structural diagram of the third frame in an embodiment of the present utility model;

[0032] Figure 4 It is a schematic structural diagram of the insulating frame assembly in an embodiment of the present utility model;

[0033] Figure 5 For Figure 4Partial enlarged view at A in [the figure];

[0034] Figure 6 Schematic diagram of the path of the improved creepage distance in an embodiment of the present utility model;

[0035] Figure 7 Schematic diagram of the path of the improved creepage distance in an embodiment of the present utility model;

[0036] Figure 8 Schematic diagram of the structure of the stator in an embodiment of the present utility model;

[0037] Figure 9 Schematic diagram of the structure of the stator in another embodiment of the present utility model;

[0038] Figure 10 is Figure 9 partial schematic diagram in

[0039] Explanation of the reference numerals in the drawings:

[0040] 100, insulation frame assembly; 1a, outer baffle; 1b, winding frame; 11b, slot; 1, first frame; 11, first main body; 12, first joint; 121, first connecting section; 1211, first side wall; 1212, first winding wall; 122, first convex section; 123, first notch; 2, second frame; 21, second main body; 22, second joint; 221, second connecting section; 222, second convex section; 2221, second side wall; 2222, second winding wall; 223, second notch; 3, third frame; 31, third main body; 32, third joint; 33, fourth joint; 400, stator; 401, stator core; 4011, stator teeth; 4012, stator slots; 402, stator yoke; 403, winding.

[0041] The realization of the object, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0042] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0043] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0044] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0045] To achieve the above purpose, please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the utility model proposes a stator 400, which includes a stator core 401 and an insulating frame assembly 100. The stator core 401 includes a stator yoke 402 and a plurality of stator teeth 4011 located radially inside the stator yoke and distributed circumferentially, a stator slot 4012 is formed between two adjacent stator teeth 4011, and the insulating frame assembly 100 is arranged on the stator teeth 4011.

[0046] The insulating frame assembly 100 includes a first frame 1 and a second frame 2 which are arranged adjacent to each other, and the main bodies of the first frame 1 and the second frame 2 are respectively sleeved on two adjacent stator teeth 4011; the first frame 1 is provided with a first joint portion 12 along the radial inner side of the stator tooth 4011, and the second frame 2 is provided with a second joint portion 22 along the radial inner side of the stator tooth 4011, and the first joint portion 12 and the second joint portion 22 located in the same stator slot 4012 overlap by a preset distance in the circumferential direction.

[0047] In this embodiment, if Figure 8 and Figure 9As shown, the insulating frame assembly 100 is applied to the stator 400 of the motor, and the insulating frame assembly 100 is suitable for a tooth-yoke separated stator structure. Specifically, the main structure of the stator 400 forms a plurality of radially distributed stator teeth 4011. A stator yoke 402 sleeved on the stator teeth 4011 is arranged on the periphery of the main structure. The stator yoke 402 and the main structure are separable structures. A stator slot 4012 is formed between two adjacent stator teeth 4011. Before installing the stator yoke 402, the insulating frame winding 403 needs to be installed in the stator slot 4012. Among them, the insulating frame winding 403 includes an insulating skeleton and a winding 403 wound on the insulating skeleton. By setting the main structure with stator teeth 4011 and the stator yoke 402 as separable structures, it is convenient to install the insulating frame winding 403 in two adjacent stator slots 4012, and the insulating frame winding 403 has a higher slot fill factor, that is, more coils can be wound, with higher installation accuracy and higher structural stiffness.

[0048] In this embodiment, the main body is a structural support component of the insulating frame. While being used to connect the first joint portion 12 or the second joint portion 22, it is also used to be inserted into the stator teeth 4011, so as to realize the mutual installation of the frame and the stator core 401. The main body can be a frame structure, which is provided with slots for mating installation with the stator teeth 4011. And at least two frames are arranged on at least two adjacent stator teeth 4011. The first joint portion 12 or the second joint portion 22 connected to the main body extends into the stator slot 4012 between two adjacent stator teeth 4011. Part of the first joint portion 12 and part of the second joint portion 22 located in the same stator slot 4012 overlap a preset distance in the circumferential direction of the stator core, that is, part of the first joint portion 12 and part of the second joint portion 22 located in the same stator slot 4012 are at least partially overlapped or arranged at intervals in the radial direction along the stator teeth 4011.

[0049] It can be understood that compared with the traditional insulating frame structure, the two insulating frames arranged on two adjacent stator teeth 4011 are oppositely arranged at the connection of the stator slot 4012 between the two stator teeth 4011. Due to the manufacturing accuracy of the insulating frame and the installation accuracy with the stator teeth 4011 having errors, voids inevitably occur on the opposite sides of the two insulating frames, making the stator core 401 connected to the insulating frame directly communicate with the winding 403 on the insulating frame through this void. And this void is perpendicular to the bottom wall of the stator slot 4012, that is, the gap between two adjacent insulating frames is a vertical straight line, resulting in very small overall creepage distance and electrical clearance, and the electrical safety distance also decreases accordingly. Further, there may be phenomena such as electric leakage and electric sparks, causing the motor to be damaged and fail, and possibly endangering personal or property safety.

[0050] Based on this, as Figure 6 and Figure 7 shown, in the direction perpendicular to the bottom wall of the stator slot 4012, the first joint portion 12 and the second joint portion 22 overlap a preset distance in the circumferential direction of the stator core 401 (or overlap a preset distance in the radial direction of the stator tooth 4011), so that the originally vertical gap is transformed into a meandering gap, so as to extend the distance between the external winding and the stator core 401 between the bottom walls of the stator slots 4012, or there is no gap, so as to increase the electrical clearance and creepage distance between the coil on the winding 403 and the stator core 401, thereby effectively increasing the electrical safety distance of the stator 400 and the motor having the insulating frame assembly 100.

[0051] In this embodiment, the insulating frame assembly 100 includes a first frame 1 and a second frame 2. The first frame 1 includes a first main body 11 and a first joint portion 12 provided on the first main body 11. The second frame 2 includes a second main body 21 and a second joint portion 22 provided on the second main body 21. The first main body 11 and the second main body 21 are provided on two adjacent or spaced stator teeth 4011. The first joint portion 12 and the second joint portion 22 located in the same stator slot 4012, at least part of the first joint portion 12 and at least part of the second joint portion 22 overlap a preset distance in the circumferential direction of the stator core 401.

[0052] In this embodiment, the insulating frame assembly 100 is a part of the insulating skeleton of the stator 400, and the insulating skeleton of the stator 400 includes a plurality of such insulating frame assemblies 100. The plurality of insulating frame assemblies 100 are connected or abutted in a ring in sequence to be provided on the stator teeth 4011. The insulating frame assembly 100 includes a first frame 1 and a second frame 2, that is, the first frame 1 and the second frame 2 are the minimum units of the insulating frame assembly 100 and the insulating skeleton, and the insulating skeleton is a combination of a plurality of first frames 1 and a plurality of second frames 2.

[0053] Among them, as Figure 4 and Figure 5As shown, the first frame 1 includes a first main body 11 and a first joint portion 12. The first main body 11 is the main body support structure of the first frame 1. On the one hand, it is used for installation connection with the stator tooth 4011. On the other hand, it is used for installing the first joint portion 12. At the same time, the first main body 11 is also used for winding the winding 403. Specifically, the first main body 11 can be a frame structure or a box structure. An installation groove is formed on the first main body 11, and the installation groove can be inserted into the stator tooth 4011 to realize the connection between the first frame 1 and the stator tooth 4011. At the same time, the first main body 11 extends from the end of the stator tooth 4011 to the root of the stator tooth 4011, so that a part of the first main body 11 extends into the stator slot 4012. The first joint portion 12 is connected to the first main body 11 and is located in the stator slot 4012. The first joint portion 12 can be integrally formed with the first main body 11 or can be detachably connected. The first joint portion 12 is a joint piece or a joint plate extending from the first main body 11 in a direction away from the first main body 11, or the first joint portion 12 is provided with a joint groove.

[0054] Similarly, as Figure 4 and Figure 5 shown, the second frame 2 includes a second main body 21 and a second joint portion 22. The second main body 21 is the main body support structure of the second frame 2. On the one hand, it is used for installation connection with the stator tooth 4011. On the other hand, it is used for installing the second joint portion 22. At the same time, the second main body 21 is also used for winding the winding 403. Specifically, the second main body 21 can be a frame structure or a box structure. An installation groove is formed on the second main body 21, and the installation groove can be inserted into the stator tooth 4011 to realize the connection between the second frame 2 and the stator tooth 4011. At the same time, the second main body 21 extends from the end of the stator tooth 4011 to the root of the stator tooth 4011, so that a part of the second main body 21 extends into the stator slot 4012. The second joint portion 22 is connected to the second main body 21 and is located in the stator slot 4012. The second joint portion 22 can be integrally formed with the second main body 21 or can be detachably connected. The second joint portion 22 is a joint piece or a joint plate extending from the second main body 21 in a direction away from the second main body 21. The second joint portion 22 can extend into the joint groove formed by the first joint portion 12 to realize the connection between the first joint portion 12 and the second joint portion 22.

[0055] In this embodiment, as Figure 4 、 Figure 5 and Figure 8As shown in the figure, the first frame 1 and the second frame 2 are disposed on two adjacent or spaced stator teeth 4011, that is, the first main body 11 and the second main body 21 are disposed on two adjacent stator teeth 4011, or on two stator teeth 4011 with one stator tooth 4011 in between. And the first joint portion 12 connected to the first main body 11 is located in the stator slot 4012 between two adjacent stator teeth 4011, and the second joint portion 22 connected to the second main body 21 is located in the same stator slot 4012, so that the first joint portion 12 and the second joint portion 22 are connected to each other, abutted against each other, or spaced apart.

[0056] Moreover, for the first joint portion 12 and the second joint portion 22 located in the same stator slot 4012, the projection of at least part of the first joint portion 12 in the direction of the bottom wall of the stator slot 4012 and the projection of at least part of the second joint portion 22 in the direction of the bottom wall of the stator slot 4012 overlap, so that at least part of the first joint portion 12 and at least part of the second joint portion 22 overlap a preset distance in the circumferential direction of the stator core 401, or are superimposed on each other or spaced apart in the radial direction of the stator tooth 4011.

[0057] In this application, at least part of the first joint portion 12 and at least part of the second joint portion 22 are arranged to be superimposed on each other or spaced apart, so that in the direction perpendicular to the bottom wall of the stator slot 4012, at least part of the first joint portion 12 and at least part of the second joint portion 22 coincide with each other, turning the originally vertical gap into a meandering gap, or there is no gap, so as to increase the electrical clearance and creepage distance from the coil on the winding 403 to the stator core 401, thereby effectively increasing the electrical safety distance of the stator 400 and the motor having the insulating frame assembly 100.

[0058] The stator 400 of the technical solution of the present utility model includes a stator core 401 and an insulating frame assembly 100. The stator core 401 includes a stator yoke 402 and a plurality of stator teeth 4011 that are circumferentially distributed on the radially inner side of the stator yoke. A stator slot 4012 is formed between two adjacent stator teeth 4011. The insulating frame assembly 100 includes a first frame 1 and a second frame 2. The main bodies of the first frame 1 and the second frame 2 are respectively sleeved on two adjacent stator teeth 4011. The first frame 1 is provided with a first joint portion 12 on the radially inner side of the stator tooth 4011, and the second frame 2 is provided with a second joint portion 22 on the radially inner side of the stator tooth 4011. The first joint portion 12 and the second joint portion 22 in the same stator slot 4012 overlap a preset distance in the circumferential direction, that is, at least part of the structures of the first joint portion 12 and the second joint portion 22 overlap in the radial direction of the stator tooth 4011, so as to be able to increase the distance between the wire group wound on the main body and the bottom wall of the stator slot 4012, so as to increase the electrical clearance and creepage distance, and improve the electrical safety distance and the insulation withstand voltage ability of the motor.

[0059] In one embodiment, as Figure 1 , Figure 2 , Figure 4 and Figure 5 shown, the first engaging portion 12 includes a connected first connecting section 121 and a first convex section 122. The first connecting section 121 is connected to the first main body 11; the second engaging portion 22 includes a connected second connecting section 221 and a second convex section 222. The second connecting section 221 is connected to the second main body 21; at least a part of the second convex section 222 extends into the first notch 123, and at least a part of the first convex section 122 and at least a part of the second convex section 222 are overlapped or spaced apart along the radial direction of the stator.

[0060] In this embodiment, one end of the first connecting section 121 is connected to the first main body 11. The first connecting section 121 extends along the bottom wall of the stator slot 4012, and the end of the first connecting section 121 away from the first main body 11 is connected to the first convex section 122. The first convex section 122 also extends along the bottom wall of the stator slot 4012 and extends in the direction of the second engaging portion 22.

[0061] Similarly, one end of the second connecting section 221 is connected to the second main body 21. The second connecting section 221 extends along the bottom wall of the stator slot 4012, and the end of the second connecting section 221 away from the second main body 21 is connected to the second convex section 222. The second convex section 222 also extends along the bottom wall of the stator slot 4012 and extends in the direction of the second engaging portion 22.

[0062] It can be understood that the first convex section 122 and the first notch 123 are arranged side by side at the end of the first engaging portion 12, that is, the end of the first engaging portion 12 facing the second engaging portion 22. Part of it is the first convex section 122, and the other part is the first notch 123. Similarly, the second convex section 222 and the second notch 223 are arranged side by side at the end of the second engaging portion 22, that is, the end of the second engaging portion 22 facing the first engaging portion 12. Part of it is the second convex section 222, and the other part is the second notch 223. Thus, it is convenient for the first convex section 122 to directly extend into the second notch 223 and the second convex section 222 to extend into the first notch 123 at the mutually engaging ends of the first engaging portion 12 and the second engaging portion 22 to form a fitting connection, and part of the first convex section 122 and part of the second convex section 222 overlap each other along the radial direction of the stator 400, so as to further reduce the occupation of the space of the stator slot 4012 by the first frame 1 and the second frame 2 on the basis of improving the electrical clearance and creepage distance, and improve the slot filling rate of the insulating frame.

[0063] In one embodiment, as Figure 1 , Figure 4 and Figure 5As shown, the first convex section 122 is provided with a first notch 123, and at least a part of the second convex section 222 extends into the first notch 123.

[0064] In this embodiment, the first convex section 122 is formed with a first notch 123. Among them, a part of the side wall of the first convex section 122 and a part of the side wall of the first connecting section 121 enclose an open first notch 123, so that at least a part of the second convex section 222 can extend into the first notch 123. The first notch 123 is opened on the side wall of the first convex section 122 close to the bottom wall of the stator slot 4012, so that the first notch 123 faces the bottom wall of the stator slot 4012, or is opened on the side wall of the first convex section 122 far from the bottom wall of the stator slot 4012, so that the first notch 123 faces away from the bottom wall of the stator slot 4012. Then, a part of the second convex section 222 can extend into the first notch 123, so that a part of the second convex section 222 and a part of the first convex section 122 overlap each other in the radial direction of the stator 400. At the same time, the second convex section 222 can be in contact with the cavity wall of the first notch 123 or be spaced apart to form a gap, which is not limited here.

[0065] It can be understood that by providing the first notch 123, part of the second convex section 222 can extend into the first notch 123, so that part of the second convex section 222 and part of the first convex section 122 overlap each other, so that the distance from the coils wound around the first main body 11 and the second main body 21 to the stator core 401 connected to the insulating frame assembly 100 is farther, effectively increasing the electrical clearance and creepage distance, improving the electrical safety distance and the insulation withstand voltage ability of the motor. At the same time, by providing the first notch 123, an engaging structure is formed between the first convex section 122 and the second convex section 222, and the space occupied by the overlapping or spaced area between the first convex section 122 and the second convex section 222 can also be made smaller, thereby increasing the number of coils that can be wound on the first main body 11 and the second main body 21, improving the slot fill factor of the first frame 1 and the second frame 2, and improving the torque of the motor.

[0066] In one embodiment, as Figure 2 、 Figure 4 and Figure 5 shown, the second convex section 222 is provided with a second notch 223, and at least a part of the first convex section 122 extends into the second notch 223.

[0067] In this embodiment, a second notch 223 is formed by the second convex segment 222. Specifically, a partial side wall of the second convex segment 222 and a partial side wall of the second connecting segment 221 enclose an open second notch 223, enabling at least a part of the first convex segment 122 to extend into the second notch 223. The second notch 223 is formed on the side wall of the second convex segment 222 close to the bottom wall of the stator slot 4012, such that the second notch 223 faces the bottom wall of the stator slot 4012, or is formed on the side wall of the second convex segment 222 away from the bottom wall of the stator slot 4012, such that the second notch 223 faces away from the bottom wall of the stator slot 4012. A part of the first convex segment 122 can extend into the second notch 223, causing a part of the first convex segment 122 and a part of the second convex segment 222 to overlap in the radial direction of the stator 400. At the same time, the first convex segment 122 can be in contact with the cavity wall of the second notch 223 or be spaced apart to form a gap, which is not limited herein.

[0068] It can be understood that by providing the second notch 223, a part of the first convex segment 122 can extend into the second notch 223, causing a part of the first convex segment 122 and a part of the second convex segment 222 to overlap, thereby increasing the distance between the coils wound around the first body 11 and the second body 21 and the stator core 401 connected to the insulation frame assembly 100, effectively increasing the electrical clearance and creepage distance, enhancing the electrical safety distance and the insulation withstand voltage capacity of the motor. At the same time, by providing the second notch 223, an engaging structure is formed between the first convex segment 122 and the second convex segment 222, and the space occupied by the overlapping or spaced area between the first convex segment 122 and the second convex segment 222 can also be reduced, thereby increasing the number of coils that can be wound on the first body 11 and the second body 21, improving the slot fill factor of the first frame 1 and the second frame 2, and enhancing the torque of the motor.

[0069] Meanwhile, based on this embodiment, when a part of the first convex segment 122 extends into the second notch 223 of the second convex segment 222, another part of the second convex segment 222 also extends into the first notch 123 of the first convex segment 122 at the same time, enabling the first convex segment 122 and the second convex segment 222 to further form an interlocking structure. On the basis of increasing the electrical clearance and creepage distance, the space occupied by the first frame 1 and the second frame 2 in the stator slot 4012 is further reduced, improving the slot fill factor of the insulation frame.

[0070] In one embodiment, as Figure 5 shown, the thickness of the first convex segment 122 in the radial direction of the stator tooth 4011 gradually increases from the end extending into the second notch 223 to the end connected to the first connecting segment 121.

[0071] In this embodiment, the thickness of the first convex segment 122 in the radial direction of the stator tooth 4011, that is, the width between the side of the first convex segment 122 adjacent to the bottom wall of the stator slot 4012 and the side away from the bottom wall of the stator slot 4012, is gradually increased from one end extending into the second notch 223 to the end away from the second notch 223. That is, the thickness of the first convex segment 122 is gradually changing, and is the smallest at one end adjacent to the cavity wall of the second notch 223.

[0072] It can be understood that when the adjacent first frame 1 and the second frame 2 are connected, due to manufacturing errors and installation errors, errors and gaps will inevitably occur when the first joint portion 12 and the second joint portion 22 are joined. That is, gaps will inevitably occur between the side walls of the first convex segment 122 and the second notch 223, the side walls of the second convex segment 222 and the first notch 123, and the side walls between the first convex segment 122 and the second convex segment 222.

[0073] By setting the thickness of the first convex segment 122 to be gradually changing and the smallest at one end adjacent to the cavity wall of the second notch 223, the side wall of the first convex segment 122 facing the second convex segment 222 is inclined, so that the distance between the winding 403 space formed by the first frame 1 and the second frame 2 and the stator core 401 connected to the insulating frame is longer, and the gap length between the first convex segment 122 and the second convex segment 222 is longer, effectively improving the electrical clearance and creepage distance, and without additionally occupying the winding space of the first main body 11 and the second main body 21.

[0074] In one embodiment, as Figure 5 shown, the first connection segment 121 includes a connected first side wall 1211 and a first winding wall 1212. The first side wall 1211 is connected to the first main body 11, and the first winding wall 1212 is connected to the first convex segment 122; the plane where the first winding wall 1212 is located and the plane where the first side wall 1211 is located are arranged at an acute angle.

[0075] In this embodiment, the first winding wall 1212 is connected to the first main body 11 and the first side wall 1211. The first winding wall 1212 extends substantially along the bottom wall direction of the stator slot 4012, and the first side wall 1211 extends substantially along the radial direction of the stator tooth 4011. And the first side wall 1211 is also connected to the first convex segment 122. At the connection of the first winding wall 1212 and the first side wall 1211, the plane where the first winding wall 1212 is located and the plane where the first side wall 1211 is located are arranged at an acute angle.

[0076] It can be understood that the first winding wall 1212 is connected to the first main body 11, so that the first winding wall 1212 and the first main body 11 form a first winding space. The coil is wound on the first main body 11 and is located in the first winding space, and part of the coil winding 403 is located on the first winding wall 1212. By setting the plane where the first winding wall 1212 is located and the plane where the first side wall 1211 is located to an acute angle, the distance at the connection of the first connecting section 121 between the first winding wall 1212 and the first side wall 1211 is increased, and the distance between the coil located on the first winding wall 1212 and the stator core 401 is further increased, effectively improving the electrical clearance and creepage distance.

[0077] Moreover, preferably, the first winding wall 1212 is inclined from connecting to the first main body 11 to away from the first main body 11, which can also ensure the overall space utilization rate of the first winding space and ensure the slot fill factor of the winding 403 to ensure the motor efficiency.

[0078] In an embodiment, as Figure 5 shown, the second convex section 222 includes a connected second side wall 2221 and a second winding wall 2222. The second side wall 2221 is disposed opposite to the first side wall 1211, and the second winding wall 2222 is connected to the second main body 21; the plane where the second side wall 2221 is located and the plane where the second winding wall 2222 is located are disposed at an acute angle.

[0079] In this embodiment, the second convex section 222 forms the second winding wall 2222 and the second side wall 2221. The second winding wall 2222 is connected to the second main body 21 and the second side wall 2221. The second winding wall 2222 extends substantially along the bottom wall direction of the stator slot 4012, and the second side wall 2221 extends substantially along the radial direction of the stator 400. At the connection of the second winding wall 2222 and the second side wall 2221, the plane where the second winding wall 2222 is located and the plane where the second side wall 2221 is located are disposed at an acute angle.

[0080] It can be understood that the second winding wall 2222 is connected to the second main body 21, so that the second winding wall 2222 and the second main body 21 form a second winding space. The coil is wound on the second main body 21 and is located in the second winding space, and part of the coil winding 403 is located on the second winding wall 2222. By setting the plane where the second winding wall 2222 is located and the plane where the second side wall 2221 is located to an acute angle, the distance at the connection of the second connecting section 221 between the second winding wall 2222 and the second side wall 2221 is increased, and the distance between the coil located on the second winding wall 2222 and the stator core 401 is further increased, effectively improving the electrical clearance and creepage distance.

[0081] Moreover, preferably, the second winding wall 2222 is inclined from the connection of the second body 21 to away from the second body 21, which can also ensure the space volume ratio of the overall second winding space and ensure the slot fill factor of the winding 403 to ensure the motor efficiency.

[0082] In one embodiment, the insulating frame assembly 100 includes a plurality of first frames 1 and a plurality of second frames 2. The first frames 1 and the second frames 2 are arranged alternately so that there is one second frame 2 between two adjacent first frames 1.

[0083] It can be understood that the plurality of first frames 1 and the plurality of second frames 2 are both arranged on the stator teeth 4011, and the plurality of first frames 1 are arranged at intervals so that there is one stator tooth 4011 between two adjacent first frames 1; the plurality of second frames 2 are also arranged at intervals so that there is one stator tooth 4011 between two adjacent second frames 2, and the first frame 1 is located between two adjacent second frames 2, and the second frame 2 is located between two adjacent first frames 1. The first frames 1 and the second frames 2 are arranged alternately, so that the insulating frame assembly 100 covers the stator teeth 4011 of the stator core, and the bottom wall of the stator slot 4012 is covered by the first engaging portion 12 and the second engaging portion 22.

[0084] In one embodiment, as Figures 4 to 8 shown, at least part of the second engaging portion 22 is located on the side of the first engaging portion 12 away from the bottom wall of the stator slot 4012; or, at least part of the first engaging portion 12 is located on the side of the second engaging portion 22 away from the bottom wall of the stator slot 4012.

[0085] It can be understood that the first engaging portion 12 and the second engaging portion 22 located in the same stator slot 4012 are overlapped or arranged at intervals with each other, and it can be that the second engaging portion 22 is located on the side of the first engaging portion 12 away from the bottom wall of the stator slot 4012, or it can be that the first engaging portion 12 is located on the side of the second engaging portion 22 away from the bottom wall of the stator slot 4012. That is, the specific placement positions of the first engaging portion 12 and the second engaging portion 22 are not limited. As long as they are overlapped or arranged at intervals with each other, they all meet the technical concept proposed in this application. At the same time, in the actual installation process, the first engaging portion 12 and the second engaging portion 22 can be directly installed without alignment, which improves the installation efficiency and the fault tolerance.

[0086] In one embodiment, as Figure 1 and Figure 2 shown, the first body 11 and the second body 21 have the same structure and both include an outer baffle 1a and a winding frame 1b. The winding frame 1b is connected to the outer baffle 1a, and the winding frame 1b forms a slot 11b to be inserted into the stator tooth 4011 through the slot 11b; the first engaging portion 12 or the second engaging portion 22 is connected to the end of the winding frame 1b away from the outer baffle 1a.

[0087] In this embodiment, the winding bobbin 1b has a frame structure. The winding bobbin 1b can be a frame structure formed by sequentially connecting a first side plate, a second side plate, an upper end plate, and a lower end plate. The central part of this frame structure is a hollow part, which is the above-mentioned slot 11b. Through the slot 11b, the winding bobbin 1b is an axisymmetric structure. And at one end of the winding bobbin 1b along the extending direction of the stator tooth 4011, an outer baffle 1a is connected. At one end of the winding bobbin 1b along the extending direction of the stator tooth 4011 and adjacent to the stator slot 4012, a first joint portion 12 or a second joint portion 22 is connected. The coil is wound around the winding bobbin 1b to form a winding 403, and the insulating frame and the winding 403 together form an insulating frame winding 403.

[0088] Meanwhile, in the stator slots 4012 on both sides of the same stator tooth 4011 for each first main body 11, a first joint portion 12 is provided. In the stator slots 4012 on both sides of the same stator tooth 4011 for each second main body 21, a second joint portion 22 is provided, so that the first frame 1 and the second frame 2 provided on adjacent stator teeth 4011 can be joined to each other through the first joint portion 12 and the second joint, such as by laminating or arranging at intervals, so that the insulating frame assembly 100 is installed on all the stator teeth 4011.

[0089] The insulating frame assembly 100 in the above embodiments is applicable to a tooth yoke separated stator 400 with an even number of stator slots 4012. Among them, for the first joint portion 12 in the first frame 1, its first convex segment 122 is arranged adjacent to the bottom wall of the stator slot 4012. For the second joint portion 22 in the second frame 2, its second convex segment 222 is arranged away from the bottom wall of the stator slot 4012. When the first frame 1 and the second frame 2 are placed on the stator tooth 4011, it is necessary to ensure that the first frame 1 is placed first, so that after the first convex segment 122 is in place in the stator slot 4012, the second frame 2 is placed, so that the first convex segment 122 enters the second notch 223, and the second convex segment 222 enters the first notch 123.

[0090] Define the number of stator slots 4012 as N, and the number of both the first frame 1 and the second frame 2 as k, then k = N / 2. Further, the included angle between two adjacent first frames 1 is 360° / k, and the included angle between an adjacent first frame 1 and a second frame 2 is 360° / N.

[0091] In one embodiment, such as Figure 3 、 Figure 9 and Figure 10As shown, the insulating frame assembly 100 further includes at least one third frame 3. The third frame 3 includes a third main body 31, a third joint portion 32, and a fourth joint portion 33. The third joint portion 32 and the fourth joint portion 33 are connected to the third main body 31. The third joint portion 32 has the same structure as the first joint portion 12, and the fourth joint portion 33 has the same structure as the second joint portion 22.

[0092] At least one third frame 3 is located between the first frame 1 and the second frame 2, such that at least part of the fourth joint portion 33 and at least part of the first joint portion 12, and at least part of the third joint portion 32 and at least part of the second joint portion 22 are disposed in the stator slots 4012 between two stator teeth 4011 in the radial direction of the stator 400. The third joint portion 32 and the second joint portion 22 located in the same stator slot 4012 overlap a preset distance in the circumferential direction, and the fourth joint portion 33 and the first joint portion 12 located in the same stator slot 4012 overlap a preset distance in the circumferential direction.

[0093] In this embodiment, the insulating frame assembly 100 further includes at least one third frame 3. The third frame 3 includes a third main body 31, and a third joint portion 32 and a fourth joint portion 33 connected to the third main body 31. Among them, the third joint portion 32 has the same structure as the first joint portion 12. The third joint portion 32 includes the above-mentioned first connecting section 121 and the above-mentioned first convex section 122. The fourth joint portion 33 has the same structure as the second joint portion 22. The fourth joint portion 33 includes the above-mentioned second connecting section 221 and the above-mentioned second convex section 222.

[0094] Wherein, when the first frame 1 and the second frame 2 are disposed on two stator teeth 4011 and there is one stator tooth 4011 in between, the third frame 3 is disposed between the first frame 1 and the second frame 2 and is also disposed on the stator tooth 4011 between the two spaced stator teeth 4011, so that the third frame 3 can be superposed or spaced apart from the first joint portion 12 of the first frame 1 on one side through the fourth joint portion 33, and can be superposed or spaced apart from the second joint portion 22 of the second frame 2 on the other side through the third joint portion 32, and at least part of the fourth joint portion 33 and at least part of the first joint portion 12, as well as at least part of the third joint portion 32 and at least part of the second joint portion 22 have an overlapping area in the circumferential direction of the stator 400, or their projections on the bottom wall of the stator slot 4012 overlap.

[0095] Meanwhile, the third main body 31 has the same structure as the first main body 11 and the second main body 21, and both include an outer baffle 1a and a winding frame 1b. The winding frame 1b is connected to the outer baffle 1a. The winding frame 1b forms a slot 11b to be inserted into the stator tooth 4011 through the slot 11b. The first joint portion 12 or the second joint portion 22 is connected to the end of the winding frame 1b away from the outer baffle 1a.

[0096] The insulating frame assembly 100 in the above embodiments is applicable to a tooth-yoke separated stator with an even or odd number of stator slots 4012, and the number of stator slots 4012 is 3q. Among them, the assembly sequence is to first assemble the first frame 1 with the first joint portions 12 all disposed radially close to the inner side of the bottom wall of the stator slot 4012, then assemble the third frame 3 with the fourth joint portions 33 disposed radially away from the bottom wall of the stator slot 4012; finally, assemble the second frame 2 with the second joint portions 22 all disposed radially away from the outer side of the bottom wall of the stator slot 4012.

[0097] Define the number of stator slots 4012 as N, and the number of the first frame 1, the second frame 2, and the third frame 3 is all q, then q = N / 3. Further, the angle between two adjacent same-kind frames (such as the same-kind first frame 1, the same-kind third frame 3, etc.) is 360° / k, and the angle between two adjacent different frames is 360° / N.

[0098] Since the number of the first frame 1, the second frame 2, and the third frame 3 is equal and they are evenly distributed in the circumferential direction, all the windings 403 of the first frame 1 form a U-phase winding 403, all the windings 403 of the second frame 2 form a V-phase winding 403, and all the windings 403 of the third frame 3 form a W-phase winding 403. Therefore, this solution is applicable not only to the frame single-winding tooth-yoke separation solution but also to the frame continuous-winding tooth-yoke separation solution to form a three-phase winding 403.

[0099] The present utility model further provides a motor, which includes a rotor assembly and the above-mentioned stator 400. The rotor assembly includes a rotor core and a permanent magnet disposed on the rotor core. The rotor assembly is disposed in the center of the stator assembly, and an air gap is formed between the rotor assembly and the stator. The specific structure of the stator 400 refers to the foregoing embodiments. Since this motor adopts all the technical solutions of the foregoing embodiments, it has at least all the beneficial effects brought by the technical solutions of the foregoing embodiments, which will not be elaborated herein one by one.

[0100] The present utility model further provides a compressor, which includes the above-mentioned motor. The specific structure of the motor refers to the foregoing embodiments. Since this compressor adopts all the technical solutions of the foregoing embodiments, it has at least all the beneficial effects brought by the technical solutions of the foregoing embodiments, which will not be elaborated herein one by one. Among them, the compressor may be a compressor with the above-mentioned motor, as well as an air conditioner, a washing machine, a refrigeration device, a new energy vehicle, and an electric bicycle with a compressor.

[0101] The above are only exemplary embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A stator, the stator comprising a stator core and an insulating frame assembly, the stator core including a stator yoke and a plurality of stator teeth circumferentially distributed radially inside the stator yoke, a stator slot being formed between two adjacent stator teeth, characterized in that, The insulating frame assembly includes a first frame and a second frame arranged adjacent to each other, and the main bodies of the first frame and the second frame are respectively sleeved on two adjacent stator teeth; The first frame is provided with a first joint portion along the radially inner side of the stator tooth, and the second frame is provided with a second joint portion along the radially inner side of the stator tooth. The first joint portion and the second joint portion located in the same stator slot overlap a preset distance in the circumferential direction.

2. The stator according to claim 1, characterized in that, The first joint portion includes a first connecting section and a first convex section connected to each other, and the first connecting section is connected to the main body; The second joint portion includes a second connecting section and a second convex section connected to each other, and the second connecting section is connected to the main body; At least part of the first convex section and at least part of the second convex section are stacked or spaced apart from each other along the radial direction of the stator tooth.

3. The stator according to claim 2, characterized in that, The first convex section is provided with a first notch, and at least part of the second convex section extends into the first notch.

4. The stator according to claim 2, wherein The second convex section is provided with a second notch, and at least part of the first convex section extends into the second notch.

5. The stator according to claim 4, wherein The thickness of the first convex section along the radial direction of the stator tooth gradually increases from the end extending into the second notch to the end connected to the first connecting section.

6. The stator according to claim 2, wherein The first connecting section includes a first side wall and a first winding wall connected to each other. The first side wall is connected to the first convex section, and the first winding wall is connected to the main body; The plane where the first winding wall is located and the plane where the first side wall is located are arranged at an acute angle.

7. The stator according to claim 6, wherein, The second convex section includes a second side wall and a second winding wall connected to each other. The second side wall is spaced apart from the first side wall relatively, and the second winding wall is connected to the main body; The plane where the second side wall is located and the plane where the second winding wall is located are arranged at an acute angle.

8. The stator according to any one of claims 1 to 7, characterized in that, The insulating frame assembly includes a plurality of the first frames and a plurality of the second frames, and the first frames and the second frames are arranged alternately so that one second frame is arranged between two adjacent first frames.

9. The stator according to any one of claims 1 to 7, characterized in that, At least part of the second joint portion is located on the side of the first joint portion away from the bottom wall of the stator slot; Or, at least part of the first joint portion is located on the side of the second joint portion away from the bottom wall of the stator slot.

10. The stator according to any one of claims 1 to 7, characterized in that The insulating frame assembly further includes a third frame. The third frame includes a third joint portion and a fourth joint portion. The structure of the third joint portion is the same as the structure of the first joint portion, and the structure of the fourth joint portion is the same as the structure of the second joint portion; The third frame is located between the first frame and the second frame. The third joint portion and the second joint portion located in the same stator slot overlap a preset distance in the circumferential direction, and the fourth joint portion and the first joint portion located in the same stator slot overlap a preset distance in the circumferential direction.

11. The stator according to any one of claims 1 to 7, characterized in that, The main body includes: An outer baffle; and A winding frame, the winding frame is connected to the outer baffle, and the winding frame forms a slot for being inserted into the stator tooth through the slot; The first joint portion or the second joint portion is connected to the end of the winding frame away from the outer baffle.

12. A motor, characterized in that, The motor includes a stator according to any one of claims 1 to 11.

13. A compressor, characterized in that, The compressor includes the motor as described in claim 12.

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