Stator assembly, motor and air conditioner

Abstract

The invention discloses a stator assembly, a motor and an air conditioner, and the stator assembly comprises a plurality of stator iron cores which form a ring, and a winding groove is formed between every two adjacent stator iron cores; the insulating frame assembly comprises a first insulating frame and a second insulating frame, the first insulating frame comprises a first bottom plate and a first side wall, the second insulating frame comprises a second bottom plate and a second side wall, the first bottom plate and the second bottom plate are located on the two sides of the stator iron core in the axial direction respectively, and the first side wall is connected with the first bottom plate and extends towards the second bottom plate; the second side wall is connected with the second bottom plate and extends towards the first bottom plate, the inner wall face of the first side wall is flush with the inner wall face of the winding groove or contracts inwards to the inner wall face of the winding groove, and the second side wall wraps the inner wall face of the winding groove and at least part of the first side wall. According to the stator assembly, the space, occupied by the insulating frame assembly, of the winding groove can be reduced, the power of the motor can be improved, the structure is simple, and the manufacturing cost can be reduced.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and more specifically, to a stator assembly, a motor, and an air conditioner. Background Technology

[0002] In related technologies, after the two insulating frames of the stator assembly are connected to each other, they occupy a large space in the winding slots of the stator core, which can easily affect the number of winding turns of the stator winding, thereby reducing the power of the motor. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a stator assembly that reduces the space occupied by the insulation frame assembly in the winding slot, thereby improving the power of the motor, and has a simple structure that reduces manufacturing costs.

[0004] Another object of the present invention is to provide an electric motor having the above-described stator assembly.

[0005] Another object of the present invention is to provide an air conditioner having the above-mentioned motor.

[0006] According to an embodiment of the present invention, a stator assembly includes: a stator core, wherein a plurality of stator cores are arranged in a ring, and a winding slot is formed between two adjacent stator cores; and an insulating frame assembly, wherein the insulating frame assembly includes a first insulating frame and a second insulating frame, the first insulating frame including a first base plate and a first sidewall, the second insulating frame including a second base plate and a second sidewall, the first base plate and the second base plate being located on opposite sides of the stator core in the axial direction, the first sidewall being connected to the first base plate and extending toward the second base plate, the second sidewall being connected to the second base plate and extending toward the first base plate, the inner wall surface of the first sidewall being flush with or recessed within the inner wall surface of the winding slot, and the second sidewall covering the inner wall surface of the winding slot and at least a portion of the first sidewall.

[0007] According to an embodiment of the present invention, the stator assembly is located on both sides of the stator core in the axial direction via a first base plate of a first insulating frame and a second base plate of a second insulating frame. A first sidewall is connected to the first base plate and extends toward the second base plate, and a second sidewall is connected to the second base plate and extends toward the first base plate. The inner wall surface of the first sidewall is flush with or recessed within the inner wall surface of the winding slot of the stator core. The second sidewall covers the inner wall surface of the winding slot and at least part of the first sidewall. This allows the first insulating frame and the second insulating frame to form a plug-in connection, meeting the required insulation requirements. It also reduces the space occupied by the first sidewall in the winding slot, with only the second sidewall occupying the space of the winding slot. This ensures the number of turns of the stator winding, which is beneficial for increasing the power of the motor. Alternatively, under the same power and slot fill factor, it can reduce the production cost of the motor. At the same time, it simplifies the structure and manufacturing process of the stator assembly, which is beneficial for reducing manufacturing costs.

[0008] In addition, the stator assembly according to the above embodiments of the present invention may also have the following additional technical features:

[0009] According to some embodiments of the present invention, the stator assembly has a first limiting step recessed in a direction away from the winding slot, and the end face of the first sidewall abuts against the first limiting step.

[0010] According to some embodiments of the present invention, the stator core is further provided with a second limiting step that is recessed toward the direction away from the winding groove. The first limiting step and the second limiting step are respectively located at both ends of the stator core in the axial direction. A support portion is provided on the outer wall surface of the second sidewall, and one end of the support portion away from the second base plate abuts against the second limiting step.

[0011] According to some embodiments of the present invention, the thickness of the first sidewall is 0.2mm-0.6mm; and / or, the thickness of the second sidewall is 0.2mm-0.6mm.

[0012] According to some embodiments of the present invention, at least one of the first sidewall and the second sidewall has a protrusion extending along the axial direction of the stator core on its outer wall surface, and the stator core has a groove on its wall surface facing the winding slot that mates with the protrusion.

[0013] According to some embodiments of the present invention, at least one of the first base plate and the second base plate has a positioning post on its wall facing the stator core, and the stator core has a positioning hole that cooperates with the positioning post.

[0014] According to some embodiments of the present invention, a plurality of stator cores are sequentially connected to form a strip, and the stator cores at both ends in the length direction are connected to each other to form a ring; or, a plurality of stator cores are formed into a ring.

[0015] According to some embodiments of the present invention, the insulating frame assembly comprises a plurality of components spaced apart along the circumferential direction of the stator core; or, the first insulating frame is formed as a ring and is a single piece; or, the second insulating frame is formed as a ring and is a single piece.

[0016] The motor according to an embodiment of the present invention includes the stator assembly described in the embodiment of the present invention.

[0017] According to an embodiment of the present invention, in the motor, a first base plate of a first insulating frame and a second base plate of a second insulating frame are respectively located on both sides of the stator core in the axial direction. A first sidewall is connected to the first base plate and extends toward the second base plate, and a second sidewall is connected to the second base plate and extends toward the first base plate. The inner wall surface of the first sidewall is flush with or recessed within the inner wall surface of the winding slot of the stator core. The second sidewall covers the inner wall surface of the winding slot and at least part of the first sidewall, which enables the first insulating frame and the second insulating frame to form a plug-in connection, meeting the required insulation requirements. It also reduces the space occupied by the first sidewall in the winding slot, with only the second sidewall occupying the space of the winding slot, ensuring the number of winding turns of the stator winding, which is beneficial to increasing the power of the motor. Alternatively, under the same power and slot fill factor, it can reduce the production cost of the motor. At the same time, it simplifies the structure and manufacturing process of the stator assembly, which is beneficial to reducing manufacturing costs.

[0018] An air conditioner according to an embodiment of the present invention includes a motor as described in an embodiment of the present invention.

[0019] According to an embodiment of the present invention, in an air conditioner, a first base plate of a first insulating frame and a second base plate of a second insulating frame are respectively located on both sides of the stator core in the axial direction. A first sidewall is connected to the first base plate and extends toward the second base plate, and a second sidewall is connected to the second base plate and extends toward the first base plate. The inner wall surface of the first sidewall is flush with or recessed within the inner wall surface of the winding slot of the stator core. The second sidewall covers the inner wall surface of the winding slot and at least part of the first sidewall. This allows the first insulating frame and the second insulating frame to form a plug-in connection, meeting the required insulation requirements. It also reduces the space occupied by the first sidewall in the winding slot, with only the second sidewall occupying the space of the winding slot. This ensures the number of winding turns of the stator winding, which is beneficial to increasing the power of the motor. Alternatively, under the same power and slot fill factor, it can reduce the production cost of the motor. At the same time, it simplifies the structure and manufacturing process of the stator assembly, which is beneficial to reducing manufacturing costs.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is an exploded view of the stator assembly according to the first embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of a stator assembly according to a first embodiment of the present invention, wherein the plurality of stator cores are formed in a strip shape;

[0024] Figure 3 yes Figure 2 The center circle shows an enlarged structural diagram at point A.

[0025] Figure 4 This is a schematic diagram of the structure of a stator assembly according to a first embodiment of the present invention, wherein the plurality of stator cores are formed in a ring shape;

[0026] Figure 5 yes Figure 4 The enlarged structural diagram at point B is shown in the middle circle.

[0027] Figure 6 This is an exploded view of the stator assembly according to the second embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of a stator assembly according to a second embodiment of the present invention, wherein the plurality of stator cores are formed in a strip shape;

[0029] Figure 8 yes Figure 7 The enlarged structural diagram at point C is shown in the middle circle.

[0030] Figure 9 This is a schematic diagram of the structure of a stator assembly according to a second embodiment of the present invention, wherein the plurality of stator cores are formed in a ring shape;

[0031] Figure 10 yes Figure 9 The enlarged structural diagram at point D is shown in the middle circle.

[0032] Figure 11 This is an exploded view of the stator assembly according to a third embodiment of the present invention;

[0033] Figure 12 This is a schematic diagram of the structure of a stator assembly according to a third embodiment of the present invention, wherein the plurality of stator cores are formed in a strip shape;

[0034] Figure 13 yes Figure 12 A magnified structural diagram of point E in the middle circle;

[0035] Figure 14 This is a schematic diagram of the structure of a stator assembly according to a third embodiment of the present invention, wherein the plurality of stator cores are formed in a ring shape;

[0036] Figure 15 yes Figure 14 The enlarged structural diagram at point F is shown in the middle circle.

[0037] Figure label:

[0038] 100. Stator assembly;

[0039] 10. Stator core; 11. Winding slot; 111. First limiting step; 112. Second limiting step; 113. Groove; 114. Positioning hole;

[0040] 20. Insulating frame assembly; 21. First insulating frame; 22. Second insulating frame; 211. First base plate; 212. First side wall; 221. Second base plate; 222. Second side wall; 223. Support part;

[0041] 31. Protrusion; 32. Positioning post. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0043] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] In the description of this invention, "first feature" and "second feature" may include one or more of the features, "multiple" means two or more, "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them, and "above," "over," and "on top" the second feature may include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0045] The stator assembly 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0046] Reference Figures 1-15 As shown, the stator assembly 100 according to an embodiment of the present invention may include: a stator core 10 and an insulating frame assembly 20.

[0047] Specifically, multiple (two or more) stator cores 10 are arranged in a ring, with a winding slot 11 formed between two adjacent stator cores 10. The winding slot 11 is used to place the stator windings, which can meet the required assembly requirements. The insulation frame assembly 20 includes a first insulation frame 21 and a second insulation frame 22. The first insulation frame 21 includes a first base plate 211 and a first sidewall 212. The second insulation frame 22 includes a second base plate 221 and a second sidewall 222. The first base plate 211 and the second base plate 221 are respectively located in the axial direction of the stator core 10 (e.g., ...). Figure 3 On both sides (in the vertical direction shown), the first sidewall 212 is connected to the first base plate 211 and extends toward the second base plate 221. The second sidewall 222 is connected to the second base plate 221 and extends toward the first base plate 211. The structure of the first insulating frame 21 and the second insulating frame 22 is simple, easy to process and manufacture, and easy to cooperate with the first insulating frame 21 and the second insulating frame 22 to meet the required assembly requirements.

[0048] In addition, such as Figure 5 , Figure 10 and Figure 15 As shown, the inner wall surface of the first sidewall 212 is flush with or recessed within the inner wall surface of the winding groove 11. The second sidewall 222 covers the inner wall surface of the winding groove 11 and at least part of the first sidewall 212, so that the first insulating frame 21 and the second insulating frame 22 form a plug-in connection, ensuring that the first insulating frame 21 and the second insulating frame 22 form insulation to the stator core 10, thus meeting the required insulation requirements.

[0049] Meanwhile, by having the inner wall surface of the first sidewall 212 flush with or recessed within the inner wall surface of the winding slot 11, the space occupied by the first sidewall 212 in the winding slot 11 can be reduced, leaving only the second sidewall 222 occupying the space of the winding slot 11. This reduces the space occupied by the insulating frame assembly 20 in the winding slot 11, ensuring the area of ​​the winding slot 11 and allowing the stator winding to have more turns, which is beneficial for increasing the motor power. Alternatively, under the same motor power and slot fill factor, the height of the stator core 10 can be reduced, thereby reducing the production cost of the motor. Compared with related technologies that insert ultra-thin insulating slot paper between the first and second insulating frames to reduce the space occupied in the winding slot, this method reduces the number of structures in the stator assembly 100, resulting in a simpler structure and manufacturing process, which is beneficial for reducing manufacturing costs.

[0050] It should be noted that the "inner wall surface of the first side wall 212" and the "inner wall surface of the second side wall 222" are both wall surfaces facing the interior of the winding groove 11, and the "outer wall surface of the first side wall 212" and the "outer wall surface of the second side wall 222" are both wall surfaces facing the bottom wall of the winding groove 11. Furthermore, for ease of description, the terms "upper" and "lower" in this invention are based on the orientation relationships shown in the accompanying drawings, and are not intended to limit the orientation in actual application.

[0051] In some embodiments, the length of the second sidewall 222 covering the first sidewall 212 along the axis of the stator core 10 can be set according to actual conditions to meet different creepage distance requirements and ensure the safety of motor use.

[0052] According to an embodiment of the present invention, the stator assembly 100 has a first base plate 211 of the first insulating frame 21 and a second base plate 221 of the second insulating frame 22 located on both sides of the stator core 10 in the axial direction. A first sidewall 212 is connected to the first base plate 211 and extends toward the second base plate 221, and a second sidewall 222 is connected to the second base plate 221 and extends toward the first base plate 211. The inner wall surface of the first sidewall 212 is flush with or recessed within the inner wall surface of the winding groove 11 of the stator core 10, and the second sidewall 222 covers the winding groove. The inner wall surface of 11 and at least part of the first sidewall 212 enable the first insulating frame 21 and the second insulating frame 22 to form a plug-in connection, satisfying the required insulation requirements. It also reduces the space occupied by the first sidewall 212 in the winding slot 11, with only the second sidewall 222 occupying the space of the winding slot 11. This ensures the number of winding turns of the stator winding, which is beneficial to increasing the power of the motor. Alternatively, under the same power and slot fill factor, it can reduce the production cost of the motor. At the same time, it simplifies the structure and manufacturing process of the stator assembly 100, which is beneficial to reducing manufacturing costs.

[0053] In some embodiments of the present invention, such as Figure 3 , Figure 5 , Figure 8 and Figure 10 As shown, the stator core 10 is provided with a first limiting step 111 that is recessed in the direction away from the winding slot 11. The end face of the first side wall 212 abuts against the first limiting step 111. The first limiting step 111 can avoid the wall thickness of the first side wall 212, so that the inner wall surface of the first side wall 212 is flush with or recessed within the inner wall surface of the winding slot 11. This makes the structure of the stator core 10 simple and easy to manufacture. At the same time, it can reduce the loss of electromagnetic efficiency of the stator core 10 and ensure the working efficiency of the motor.

[0054] It is understandable that the stator core 10 is formed by stacking multiple laminations, and the first limiting step 111 is formed by limiting the multiple laminations to different sizes to form a structure that is recessed in the direction away from the winding groove 11.

[0055] According to some embodiments of the present invention, such as Figure 3 and Figure 5 As shown, the stator core 10 is also provided with a second limiting step 112 that is recessed in the direction away from the winding groove 11. The first limiting step 111 and the second limiting step 112 are located at both ends of the stator core 10 in the axial direction, respectively. Therefore, when the insulation frame assembly 20 is assembled with the stator core 10, there is no need to distinguish the assembly direction of the stator core 10, which is beneficial to improve assembly efficiency and reduce process costs.

[0056] In addition, such as Figure 5 As shown, a support portion 223 is provided on the outer wall surface of the second side wall 222. The end of the support portion 223 away from the second base plate 221 abuts against the second limiting step 112, which can further increase the contact area between the second side wall 222 and the stator core 10, and ensure that the second insulating frame 22 and the stator core 10 are reliably assembled.

[0057] It is understandable that the stator core 10 is formed by stacking multiple laminations, and the second limiting step 112 is formed by limiting the multiple laminations to different sizes to form a structure that is recessed in the direction away from the winding groove 11.

[0058] In some embodiments of the present invention, such as Figure 13 and Figure 15 As shown, the first sidewall 212 is supported on the side of the stator core 10 away from the second sidewall 222 in the axial direction (e.g., Figure 15 The upper side shown in the figure can meet the support requirements of the first insulating frame 21, ensure the connection between the first insulating frame 21 and the stator core 10, and facilitate the inner wall surface of the first side wall 212 to be flush with or recessed within the inner wall surface of the winding groove 11. The structure of the stator core 10 is simple and easy to process and manufacture.

[0059] In some embodiments, such as Figure 5 As shown, the thickness of the first sidewall 212 is 0.2mm-0.6mm, that is, the thickness of the first sidewall 212 is T1 and satisfies 0.2mm≤T1≤0.6mm. Within the above-mentioned size range, the structural filling performance and mechanical performance of the first insulating frame 21 can be satisfied, meeting the required usage requirements, ensuring high structural strength, and avoiding excessive weight, thus achieving the miniaturization requirement of the motor and helping to reduce production costs. For example, in some specific embodiments, the thickness of the first sidewall 212 can be 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, etc.

[0060] In some embodiments, when selecting the thickness dimensions of multiple first sidewalls 212, it is appropriate to select a thinner first sidewall 212 wall thickness, which can reduce the use of materials, help reduce production costs, and reduce weight, thus meeting the requirements for miniaturization of the motor.

[0061] In some embodiments, such as Figure 5 As shown, the thickness of the second sidewall 222 is 0.2mm-0.6mm, that is, the thickness of the second sidewall 222 is T2 and satisfies 0.2mm≤T2≤0.6mm. Within the above-mentioned size range, the structural filling performance and mechanical performance of the second insulating frame 22 can be satisfied, meeting the required usage requirements, ensuring high structural strength, and avoiding excessive weight, thus achieving the miniaturization requirement of the motor and helping to reduce production costs. For example, in some specific embodiments, the thickness of the second sidewall 222 can be 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, etc.

[0062] In some embodiments, when selecting the thickness dimensions of multiple second sidewalls 222, it is advisable to select a thinner second sidewall 222 thickness, which can reduce the use of materials, help reduce production costs, and reduce weight, thus meeting the requirements for miniaturization of the motor.

[0063] According to some embodiments of the present invention, such as Figure 13As shown, at least one of the first sidewall 212 and the second sidewall 222 has a protrusion 31 on its outer wall surface. That is, the outer wall surface of the first sidewall 212 may have a protrusion 31, or the outer wall surface of the second sidewall 222 may have a protrusion 31, or both the outer wall surfaces of the first sidewall 212 and the second sidewall 222 may have a protrusion 31. The protrusion 31 extends along the axial direction of the stator core 10. The protrusion 31 can enhance the injection filling channel of the first sidewall 212 and / or the second sidewall 222, avoiding the problem that the first sidewall 212 and / or the second sidewall 222 are too thin and are prone to unreliable injection shape. This can enhance the injection filling channel of the first insulating frame 21 and / or the second insulating frame 22, ensuring that the first insulating frame 21 and / or the second insulating frame 22 are fully filled and the structural shape is reliable. In addition, the stator core 10 has a groove 113 on the wall facing the winding slot 11. The groove 113 cooperates with the protrusion 31, so that the stator core 10 can avoid the protrusion 31, avoid interference and other problems, and ensure assembly reliability.

[0064] It is understandable that the stator core 10 is formed by stacking multiple laminations, and by defining the multiple laminations with different sizes, grooves 113 are formed on the wall of the winding slot 11.

[0065] In some embodiments of the present invention, such as Figures 11-15 As shown, at least one of the first base plate 211 and the second base plate 221 has a positioning post 32 on its wall facing the stator core 10. Specifically, the positioning post 32 is provided on the wall of the first base plate 211 facing the stator core 10, or on the wall of the second base plate 221 facing the stator core 10, or both the first base plate 211 and the second base plate 221 have positioning posts 32 on their respective walls facing the stator core 10. The stator core 10 has a positioning hole 114, which is connected to the positioning post. The positioning hole 114 and the positioning post 32 are engaged to guide and position the installation of the first insulating frame 21 and / or the second insulating frame 22 with the stator core 10. This helps to reduce the difficulty of positioning and engaging the first insulating frame 21 and / or the second insulating frame 22 with the stator core 10. During assembly, the positioning post 32 and the positioning hole 114 help to quickly position and install the first insulating frame 21 and / or the second insulating frame 22 with the stator core 10, which helps to improve assembly efficiency.

[0066] Furthermore, by utilizing the cooperation between the positioning post 32 and the positioning hole 114, the assembly accuracy of the first insulating frame 21 and / or the second insulating frame 22 and the stator core 10 can be improved, and the contact area between the first insulating frame 21 and / or the second insulating frame 22 and the stator core 10 can be increased, ensuring that the first insulating frame 21 and / or the second insulating frame 22 are reliably fixed on the stator core 10 and are not prone to falling off.

[0067] According to some embodiments of the present invention, such as Figures 1-4 , Figures 6-9 , Figures 11-14 As shown, multiple stator cores 10 are sequentially connected to form a strip shape. The strip shape of the stator cores 10 facilitates the winding of the stator windings on the stator cores 10, which helps to improve assembly efficiency and increases the fill factor of the winding slots 11, thereby improving the material utilization rate of the stator cores 10. In addition, the stator cores 10 at both ends in the length direction are connected to each other, so that multiple stator cores 10 form a ring, which meets the shape requirements of the stator.

[0068] Alternatively, multiple stator cores 10 can be formed into a ring, meaning that multiple stator cores 10 can be directly formed into a ring structure without bending or other operations. This can improve the connection strength of multiple stator cores 10, and the roundness of multiple stator cores 10 forming a ring can reduce the vibration and noise of the motor. It is also easier to process and manufacture, which helps to reduce production costs.

[0069] In some embodiments of the present invention, such as Figures 1-15 As shown, there are multiple insulating frame assemblies 20 (two or more), that is, the first insulating frame 21 and the second insulating frame 22 are one-to-one corresponding multiple. The multiple insulating frame assemblies 20 are spaced apart along the circumferential direction of the stator core 10. The multiple insulating frame assemblies 20 cover the required positions of the stator core 10, which facilitates the adjustment of the relative positions of the multiple insulating frame assemblies 20, reduces the assembly difficulty, and helps to improve the assembly efficiency.

[0070] In some embodiments, such as Figures 1-15 As shown, the insulating frame assembly 20 can cover the side of two adjacent winding slots 11 closest to each other, ensuring that the multiple insulating frames reliably cover the multiple winding slots 11, meeting the required insulation requirements, and ensuring reliable insulation.

[0071] Alternatively, the first insulating frame 21 can be formed as a ring and be a single piece, which simplifies the manufacturing of the first insulating frame 21, ensures high connection strength, reduces assembly steps, and facilitates the installation of the first insulating frame 21 on the stator core 10, thereby improving production efficiency. For example, this first insulating frame 21 can be applied to stator cores 10 that are formed as rings.

[0072] Alternatively, the second insulating frame 22 can be formed as a ring and be a single piece, which simplifies its manufacturing, ensures high connection strength, reduces assembly steps, and facilitates easy installation of the second insulating frame 22 on the stator core 10, thereby improving production efficiency. For example, this second insulating frame 22 can be applied to stator cores 10 that are formed as rings.

[0073] The motor according to an embodiment of the present invention includes a stator assembly 100 according to an embodiment of the present invention. Since the stator assembly 100 according to the embodiment of the present invention has the aforementioned beneficial technical effects, in the motor according to the embodiment of the present invention, the first base plate 211 of the first insulating frame 21 and the second base plate 221 of the second insulating frame 22 are respectively located on both sides of the stator core 10 in the axial direction. The first sidewall 212 is connected to the first base plate 211 and extends toward the second base plate 221, and the second sidewall 222 is connected to the second base plate 221 and extends toward the first base plate 211. The inner wall surface of the first sidewall 212 is flush with or recessed within the inner wall surface of the winding slot 11 of the stator core 10. The second sidewall 222 covers the inner wall of the winding slot 11 and at least part of the first sidewall 212, enabling the first insulating frame 21 and the second insulating frame 22 to form a plug-in connection, meeting the required insulation requirements. It also reduces the space occupied by the first sidewall 212 in the winding slot 11, with only the second sidewall 222 occupying the space of the winding slot 11, ensuring the number of winding turns of the stator winding. This is beneficial for increasing the power of the motor, or for reducing the production cost of the motor under the same power and slot fill factor. At the same time, it simplifies the structure and manufacturing process of the stator assembly 100, which is beneficial for reducing manufacturing costs.

[0074] In some embodiments, the stator assembly 100 of the present invention is applied to a motor. By having the inner wall surface of the first sidewall 212 flush with or recessed within the inner wall surface of the winding slot 11, the space occupied by the first sidewall 212 in the winding slot 11 can be reduced, and only the second sidewall 222 occupies the space of the winding slot 11. This reduces the space occupied by the insulation frame assembly 20 in the winding slot 11, ensuring the area of ​​the winding slot 11, allowing the stator winding to have more turns, which is beneficial to increasing the power of the motor. Thus, while achieving high power of the motor, it is also convenient to meet the requirements of motor miniaturization, thereby meeting the requirements of high energy efficiency and low cost.

[0075] An air conditioner according to an embodiment of the present invention includes a motor according to an embodiment of the present invention. Since the motor according to the embodiment of the present invention has the aforementioned beneficial technical effects, in the air conditioner according to the embodiment of the present invention, the first base plate 211 of the first insulating frame 21 and the second base plate 221 of the second insulating frame 22 are respectively located on both sides of the stator core 10 in the axial direction. The first side wall 212 is connected to the first base plate 211 and extends toward the second base plate 221, and the second side wall 222 is connected to the second base plate 221 and extends toward the first base plate 211. The inner wall surface of the first side wall 212 is flush with or recessed within the inner wall surface of the winding slot 11 of the stator core 10. The second sidewall 222 covers the inner wall surface of the winding slot 11 and at least part of the first sidewall 212, enabling the first insulating frame 21 and the second insulating frame 22 to form a plug-in connection, meeting the required insulation requirements. It also reduces the space occupied by the first sidewall 212 in the winding slot 11, with only the second sidewall 222 occupying the space of the winding slot 11, ensuring the number of winding turns of the stator winding, which is beneficial to increasing the power of the motor. Alternatively, under the same power and slot fill factor, it can reduce the production cost of the motor. At the same time, it simplifies the structure and manufacturing process of the stator assembly 100, which is beneficial to reducing manufacturing costs.

[0076] The stator assembly 100, the motor, and other components and operations of the air conditioner according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0077] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0078] In the description of this specification, the references to terms such as "embodiment," "specific embodiment," and "example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0079] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A stator assembly, characterized in that, include: Stator core, a plurality of stator cores are arranged in a ring, and a winding groove is formed between two adjacent stator cores; An insulating frame assembly includes a first insulating frame and a second insulating frame. The first insulating frame includes a first base plate and a first sidewall. The second insulating frame includes a second base plate and a second sidewall. The first base plate and the second base plate are located on opposite sides of the stator core in the axial direction. The first sidewall is connected to the first base plate and extends toward the second base plate. The second sidewall is connected to the second base plate and extends toward the first base plate. The inner wall surface of the first sidewall is flush with or recessed within the inner wall surface of the winding groove. The second sidewall covers the inner wall surface of the winding groove and at least a portion of the first sidewall.

2. The stator assembly according to claim 1, characterized in that, The stator core is provided with a first limiting step that is recessed in the direction away from the winding slot, and the end face of the first sidewall abuts against the first limiting step.

3. The stator assembly according to claim 2, characterized in that, The stator core is also provided with a second limiting step that is recessed in the direction away from the winding groove. The first limiting step and the second limiting step are respectively located at both ends of the stator core in the axial direction. A support part is provided on the outer wall surface of the second side wall, and the end of the support part away from the second base plate abuts against the second limiting step.

4. The stator assembly according to claim 1, characterized in that, The thickness of the first sidewall is 0.2mm-0.6mm; And / or, the thickness of the second sidewall is 0.2mm-0.6mm.

5. The stator assembly according to claim 1, characterized in that, At least one of the first sidewall and the second sidewall has a protrusion extending along the axial direction of the stator core on its outer wall surface, and the stator core has a groove on its wall surface facing the winding slot that mates with the protrusion.

6. The stator assembly according to claim 1, characterized in that, At least one of the first base plate and the second base plate has a positioning post on its wall facing the stator core, and the stator core has a positioning hole that mates with the positioning post.

7. The stator assembly according to claim 1, characterized in that, Multiple stator cores are connected in sequence to form a strip, and the stator cores at both ends in the length direction are connected to each other to form a ring; Alternatively, multiple stator cores may be formed into a ring shape.

8. The stator assembly according to claim 1, characterized in that, The insulating frame assembly consists of multiple components spaced apart along the circumferential direction of the stator core; Alternatively, the first insulating frame may be formed as a ring and be a single piece; Alternatively, the second insulating frame may be formed as a ring and be a single piece.

9. An electric motor, characterized in that, Includes the stator assembly according to any one of claims 1-8.

10. An air conditioner, characterized in that, Includes the motor according to claim 9.

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