Stator assembly, electric assembly, and electric appliance

Abstract

The present application relates to the technical field of electric appliances, and provides a stator assembly, an electric assembly, and an electric appliance. The stator assembly comprises a stator assembly, a positioning plate, and a packaging part. The positioning plate is located at a first end of the stator assembly in the axial direction and is in contact with the first end of the stator assembly; the packaging part covers the state assembly and is located at a second end of the stator assembly in the axial direction and on a side of the stator assembly in the radial direction, and a slot is formed in the side of the packaging part close to the second end of the stator assembly. The slot is formed in the side of the packaging part close to the second end of the stator assembly, thereby achieving the effect of avoiding coincidence of the resonance frequency of a motor with the drive carrier frequency, and then reducing noise caused when the motor works.

Description

Stator assemblies, electric components and electrical appliances

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 8, 2023 with application number "202311682183.5", and the priority to the Chinese patent application filed with the China Patent Office on December 8, 2023 with application number "202323348459.4", all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of electrical equipment technology, and in particular to a stator assembly, an electric component and an electrical appliance. Background Art

[0003] At present, in the relevant technology, in order to adapt to the trend of miniaturization of electrical appliances, the size of the motor also needs to be gradually reduced.

[0004] In order to reduce the size of the motor, the structure of the motor will be adjusted. However, since the stiffness of the motor gradually decreases as the size of the motor decreases, the vibration of the motor increases during operation, which in turn makes the noise generated by the motor during operation greater. Technical Solutions

[0005] This application aims to solve at least one of the technical problems existing in the prior art or related art.

[0006] To this end, a first aspect of the present application proposes a stator assembly.

[0007] A second aspect of the present application provides an electric component.

[0008] A third aspect of the present application provides an electrical appliance.

[0009] In view of this, a first aspect of the present application provides a stator assembly comprising a stator assembly, a positioning plate, and an encapsulation portion. The positioning plate is located at a first axial end of the stator assembly and contacts the first end of the stator assembly. The encapsulation portion encapsulates the stator assembly and is located at a second axial end of the stator assembly and to the side of the stator assembly in a radial direction. A groove is provided on a side of the encapsulation portion proximal to the second end of the stator assembly.

[0010] The stator assembly provided in this application includes a stator assembly, a positioning plate, and a packaging portion. The positioning plate is located at the first end of the stator assembly in the axial direction and contacts the first end of the stator assembly. The positioning plate provides fixation for the installation of the stator assembly and facilitates the installation of the stator assembly. The packaging part covers the stator assembly and is located at the second end of the stator assembly in the axial direction and the side of the stator assembly in the radial direction. A groove is provided on the side of the packaging part close to the second end of the stator assembly. The stator assembly is encapsulated by providing the packaging part to protect the stator assembly. Since the groove is provided on the side of the packaging part close to the second end of the stator assembly, the natural frequency of the stator assembly can be adjusted through the groove on the packaging part to adjust the natural frequency of the motor, thereby making the natural frequency of the motor away from the motor drive carrier frequency or the current loop frequency. Therefore, the groove is provided on the side of the packaging part close to the second end of the stator assembly to avoid the overlap of the resonant frequency of the motor and the drive carrier frequency, reduce the noise generated when the motor is working, improve the high-frequency sound quality of the motor, and at the same time improve the working effect of the motor and the user experience. While improving product quality, it can also reduce the processing cost of the motor and the stator assembly and increase the application range of the product.

[0011] In addition, the stator assembly in the above technical solution provided by this application may also have the following additional technical features:

[0012] In some technical solutions of the present application, optionally, the stator assembly further includes a mounting portion, and the number of the mounting portions is multiple, and the multiple mounting portions are arranged along the circumference of the packaging portion; the groove includes a first groove, and the first groove is arranged on the radial side wall of the packaging portion, and is located between two adjacent mounting portions among the multiple mounting portions.

[0013] In some technical solutions of the present application, optionally, the number of the first grooves is smaller than the number of the mounting portions.

[0014] In some technical solutions of the present application, optionally, the axial height of the first groove is a first height L1, the axial height of the mounting portion is a second height L, and the difference between the second height L and the first height L1 is less than or equal to 3.5 mm.

[0015] In some technical solutions of the present application, optionally, the circumferential width of the first groove is a first width L2, the radius of the packaging portion is a first radius R1, the angle of the central angle corresponding to the first groove is a first angle θ1, and the first width L2, the first radius R1 and the first angle θ1 satisfy the following relationship: L2=2R1×sin(θ1 / 2).

[0016] In some technical solutions of the present application, optionally, the radial thickness of the first groove is a first thickness t1, the radius of the packaging portion is a first radius R1, the radius of the stator assembly is a second radius R2, and the first thickness t1, the first radius R1 and the second radius R2 satisfy the following relationship: t1=R1-(R2+1.5), in millimeters.

[0017] In some technical solutions of the present application, optionally, a mounting hole is provided on one side of the packaging portion, and the mounting hole is opposite to the inner hole of the stator assembly; the groove includes a second groove, and the second groove is arranged around the mounting hole.

[0018] In some technical solutions of the present application, optionally, the radial width of the second groove decreases from a side away from the stator assembly to a side close to the stator assembly.

[0019] In some technical solutions of the present application, optionally, the positioning plate includes a positioning portion and a stepped portion, the positioning portion is annular and abuts against the end face of the first end of the stator assembly; the stepped portion is connected to the positioning portion, is located on the side of the positioning portion close to the stator assembly, and is arranged around the side of the stator assembly in the radial direction.

[0020] In some technical solutions of the present application, optionally, the distance between the end face of the packaging portion axially away from the stator assembly and the surface of the positioning portion on the side close to the stator assembly is a first distance h1, the height of the stator assembly in the axial direction is a third height h2, the height of the step portion in the axial direction is a fourth height h3, the depth of the second groove in the axial direction is a first depth H, and the first distance h1, the third height h2, the fourth height h3 and the first depth H satisfy the following relationship: H≤h1-h2-h3-2, in millimeters.

[0021] In some technical solutions of the present application, optionally, the axial depth of the second groove is a first depth H, the radial width of the second groove on the side away from the stator assembly is a second width L3, the radial width of the second groove on the side close to the stator assembly is a third width L4, the angle between the side of the second groove close to the stator assembly and the bottom wall of the second groove is a second angle θ2, and the first depth H, the second width L3 and the third width L4 satisfy the following relationship: L3=L4+2×H×tan(θ2-90°), and 90°≤θ2≤120°.

[0022] In some technical solutions of the present application, optionally, the stator assembly further includes an end cover, which is embedded in the mounting hole.

[0023] In some technical solutions of the present application, optionally, the packaging part is an integrated structure of thermosetting material.

[0024] A second aspect of the present application provides an electric component, comprising the stator assembly of any of the above technical solutions.

[0025] The electric component provided in the present application includes a stator assembly as in any of the above technical solutions, and thus the electric component includes all the beneficial effects of the stator assembly as in any of the above technical solutions.

[0026] A third aspect of the present application provides an electrical appliance, comprising a stator assembly as in any of the above technical solutions, or an electric component as in any of the above technical solutions.

[0027] An electrical appliance provided in the present application includes a stator assembly as in any of the above technical solutions; or an electric component as in any of the above technical solutions, so that the electrical appliance has all the beneficial effects of the stator assembly as in any of the above technical solutions, or the electric component as in any of the above technical solutions.

[0028] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] FIG1 is a cross-sectional view of a stator assembly according to one embodiment of the present application;

[0031] FIG2 is a structural schematic diagram of a stator assembly according to one embodiment of the present application;

[0032] FIG3 is a second structural schematic diagram of a stator assembly according to an embodiment of the present application;

[0033] FIG4 is a third structural schematic diagram of a stator assembly according to an embodiment of the present application;

[0034] FIG5 is a second cross-sectional view of a stator assembly according to one embodiment of the present application;

[0035] FIG6 is a partial schematic diagram of the stator assembly at position G shown in FIG1 according to one embodiment of the present application;

[0036] FIG. 7 is a comparison diagram of noise of electric components according to an embodiment of the present application.

[0037] The corresponding relationship between the reference numerals and component names in Figures 1 to 7 is as follows:

[0038] 200 stator assembly, 210 stator component, 212 inner hole, 220 positioning plate, 222 positioning portion, 224 stepped portion, 230 packaging portion, 232 groove, 2322 first groove, 2324 mounting hole, 2326 second groove, 240 mounting portion, 100 end cover. Modes for Carrying Out the Invention

[0039] In order to more clearly understand the above-mentioned objects, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other in the absence of conflict.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0041] The stator assembly 200 , electric components, and electrical appliances according to some embodiments of the present application are described below with reference to FIG. 1 to FIG. 7 .

[0042] In view of this, as shown in Figures 1 and 2, a first aspect of the present application provides a stator assembly 200, comprising a stator assembly 210, a positioning plate 220, and a packaging portion 230. The positioning plate 220 is located at a first end of the stator assembly 210 in the axial direction and contacts the first end of the stator assembly 210; the packaging portion 230 covers the stator assembly 210 and is located at a second end of the stator assembly 210 in the axial direction and to the side of the stator assembly 210 in the radial direction. A groove 232 is provided on a side of the packaging portion 230 near the second end of the stator assembly 210.

[0043] The stator assembly 200 provided in this application includes a stator assembly 210, a positioning plate 220, and a packaging portion 230. The positioning plate 220 is located at a first end of the stator assembly 210 in the axial direction and contacts the first end of the stator assembly 210. The positioning plate 220 provides a fixed position for the installation of the stator assembly 210, facilitating the installation of the stator assembly 210. The packaging portion 230 covers the stator assembly 210 and is located at the second end of the stator assembly 210 in the axial direction and on the side of the stator assembly 210 in the radial direction. A groove 232 is provided on the side of the packaging portion 230 close to the second end of the stator assembly 210. By providing the packaging portion 230 to encapsulate the stator assembly 210, the stator assembly 210 is protected. Since the groove 232 is provided on the side of the packaging portion 230 close to the second end of the stator assembly 210, the natural frequency of the stator assembly 200 can be adjusted through the groove 232 on the packaging portion 230 to adjust the natural frequency of the motor, thereby adjusting the natural frequency of the motor and making the natural frequency of the motor away from the motor drive carrier frequency or the current loop frequency. Therefore, the groove is provided on the side of the packaging portion close to the second end of the stator assembly to avoid the resonant frequency of the motor from coinciding with the drive carrier frequency, thereby reducing the noise generated when the motor is working, improving the high-frequency sound quality of the motor, and at the same time improving the working performance of the motor and the user experience. While improving product quality, it can also reduce the processing cost of the motor and the stator assembly 200 and increase the application range of the product.

[0044] For example, during the operation of the motor, the vibration frequency between the motor and the stator assembly 200 can be adjusted by providing the groove 232, thereby avoiding the overlap of the vibration frequencies between the motor and the stator assembly 200 and reducing noise.

[0045] Exemplarily, as shown in FIG. 1 , the axial direction of the packaging portion 230 is a direction M.

[0046] This embodiment provides a stator assembly 200 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0047] As shown in Figures 1, 2 and 3, the stator assembly 200 also includes a mounting portion 240, and there are multiple mounting portions 240, which are arranged along the circumference of the packaging portion 230; the groove 232 includes a first groove 2322, and the first groove 2322 is arranged on the radial side wall of the packaging portion 230, and is located between two adjacent mounting portions 240 among the multiple mounting portions 240.

[0048] In this embodiment, the stator assembly 200 further includes a plurality of mounting portions 240, which are arranged circumferentially around the packaging portion 230. The provision of multiple mounting portions 240 facilitates installation of the stator assembly 200, thereby improving the stability of the stator assembly 200. The grooves 232 include a first groove 2322, which is disposed on a radial sidewall of the packaging portion 230 and located between two adjacent mounting portions 240 among the plurality of mounting portions 240. The grooves 232 can be used to flexibly adjust the natural frequency of the stator assembly 200, thereby adjusting the natural frequency of the motor. This can further adjust the natural frequency of the motor away from the motor drive carrier frequency or the current loop frequency, thereby preventing the motor's resonant frequency from coinciding with the drive carrier frequency. This reduces the noise generated by the motor during operation, optimizes the audio quality of the motor during operation, and enhances the user experience.

[0049] Exemplarily, as shown in FIG3 , the radial direction of the packaging portion 230 is a direction N, and the circumferential direction of the packaging portion 230 is a direction K.

[0050] This embodiment provides a stator assembly 200 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0051] As shown in FIG. 1 , the number of the first grooves 2322 is smaller than the number of the mounting portions 240 .

[0052] In this embodiment, the number of the first grooves 2322 is less than the number of the mounting portions 240, and the first grooves 2322 are evenly arranged, which can improve the adjustment range of the natural frequency of the stator assembly 200. At the same time, it is also convenient to adjust the natural frequency of the motor to make the natural frequency of the motor away from the motor drive carrier frequency or the current loop frequency, which can avoid the motor's resonant frequency from coinciding with the drive carrier frequency, reduce the noise generated when the motor is working, and improve the user experience.

[0053] This embodiment provides a stator assembly 200 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0054] As shown in FIG4 and FIG5 , the axial height of the first groove 2322 is a first height L1 , the axial height of the mounting portion 240 is a second height L, and the difference between the second height L and the first height L1 is less than or equal to 3.5 mm.

[0055] In this embodiment, the axial height of the first groove 2322 is a first height L1, the axial height of the mounting portion 240 is a second height L, the difference between the second height L and the first height L1 is less than or equal to 3.5 mm, and the difference between the axial size of the mounting portion 240 and the axial size of the groove 232 is within a range of less than or equal to 3.5 mm. While facilitating the installation of the stator assembly 200, the adjustment amplitude of the natural frequency of the stator assembly 200 can be increased, and the resonant frequency of the motor can be better adjusted to avoid the overlap between the resonant frequency of the motor and the driving carrier frequency, thereby reducing the noise emitted by the motor when it is working, improving the high-frequency sound quality of the motor, and improving the working effect of the motor and the user's experience. At the same time, the size range of the difference between the second height L and the first height L1 being less than or equal to 3.5 mm can also facilitate the production and processing of the stator assembly 200.

[0056] For example, the stator assembly 200 may be processed by injection molding.

[0057] For example, the difference between the second height L and the first height L1 may be 3.5 mm, 3.4 mm, 3.3 mm, or 3.2 mm.

[0058] This embodiment provides a stator assembly 200 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0059] As shown in Figures 3 and 5, the circumferential width of the first groove 2322 is a first width L2, the radius of the packaging portion 230 is a first radius R1, the central angle corresponding to the first groove 2322 is a first angle θ1, and the first width L2, the first radius R1 and the first angle θ1 satisfy the following relationship: L2=2R1×sin(θ1 / 2).

[0060] In this embodiment, the circumferential width of the first groove 2322 is a first width L2, the radius of the packaging portion 230 is a first radius R1, the central angle corresponding to the first groove 2322 is a first angle θ1, and the first width L2, the first radius R1, and the first angle θ1 satisfy the following relationship: L2=2R1×sinθ1 / 2. By setting the functional relationship L2=2R1×sin(θ1 / 2) among the first width L2, the first radius R1, and the first angle θ1, the production, installation, and injection molding of the stator assembly 200 can be facilitated while ensuring the working efficiency of the stator assembly 200 and the adjustment amplitude of the natural frequency of the stator assembly 200. The natural frequency of the motor can also be better adjusted, and the natural frequency of the motor can be adjusted away from the motor drive carrier frequency or the current loop frequency to avoid the resonance frequency of the motor and the drive carrier frequency from overlapping each other, thereby reducing the noise generated by the motor during operation, improving the high-frequency sound quality of the motor, and improving the working effect of the motor, thereby improving the user experience.

[0061] For example, the first angle θ1 may be 45°.

[0062] This embodiment provides a stator assembly 200 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0063] As shown in Figure 4, the radial thickness of the first groove 2322 is a first thickness t1, the radius of the packaging portion 230 is a first radius R1, and the radius of the stator assembly 210 is a second radius R2. The first thickness t1, the first radius R1 and the second radius R2 satisfy the following relationship: t1=R1-(R2+1.5), in millimeters.

[0064] In this embodiment, the radial thickness of the first groove 2322 is a first thickness t1, the radius of the packaging portion 230 is a first radius R1, and the radius of the stator assembly 210 is a second radius R2. The first thickness t1, the first radius R1, and the second radius R2 satisfy the following relationship: t1=R1-(R2+1.5), in millimeters. Setting this functional relationship can ensure the working efficiency of the stator assembly 200 and the adjustment amplitude of the natural frequency of the stator assembly 200 while facilitating the production, installation, and injection molding of the stator assembly 200. It can also better adjust the natural frequency of the motor and adjust the natural frequency of the motor away from the motor drive carrier frequency or the current loop frequency, thereby avoiding the overlap between the resonant frequency of the motor and the drive carrier frequency, thereby reducing the noise emitted by the motor during operation, improving the high-frequency sound quality of the motor, and improving the working effect of the motor, thereby improving the user experience. While improving product quality, it can also reduce the processing cost of the motor and the stator assembly 200 and increase the application range of the product.

[0065] This embodiment provides a stator assembly 200 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0066] A mounting hole 2324 is provided on one side of the packaging portion 230 , and the mounting hole 2324 is opposite to the inner hole 212 of the stator assembly 210 ; the groove 232 includes a second groove 2326 , and the second groove 2326 is arranged around the mounting hole 2324 .

[0067] In this embodiment, a mounting hole 2324 is provided on one side of the packaging portion 230, and the mounting hole 2324 is opposite to the inner hole 212 of the stator assembly 210; the groove 232 includes a second groove 2326, and the second groove 2326 is arranged around the mounting hole 2324, so that the second groove 2326 can be provided around the mounting hole 2324 to flexibly adjust the natural frequency of the stator assembly 200 through the second groove 2326, and the resonant frequency of the motor can be adjusted to avoid the overlap between the resonant frequency of the motor and the driving carrier frequency, thereby reducing the noise generated when the motor is working, improving the high-frequency sound quality of the motor, and improving the working effect of the motor, improving the user experience, and at the same time improving the product quality. It can also reduce the processing cost of the motor and the stator assembly 200 and increase the application range of the product.

[0068] This embodiment provides a stator assembly 200 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0069] The radial width of the second groove 2326 decreases from a side away from the stator assembly 210 to a side close to the stator assembly 210 .

[0070] In this embodiment, the radial width of the second groove 2326 decreases from the side away from the stator assembly 210 to the side close to the stator assembly 210. By setting the second groove 2326 with decreasing width, it is possible to facilitate the installation of the stator assembly 200 while facilitating the adjustment of the motor's natural frequency, so that the motor's natural frequency is away from the motor drive carrier frequency or the current loop frequency, avoiding the natural frequency of the stator assembly 200 from coinciding with the motor's resonant frequency. The motor's resonant frequency can also be adjusted to avoid the motor's resonant frequency from coinciding with the drive carrier frequency, thereby reducing the noise generated by the motor when it is working, improving the high-frequency sound quality of the motor, and improving the working effect of the motor, improving the user's experience, and at the same time improving product quality while reducing the processing cost of the motor and the stator assembly 200.

[0071] This embodiment provides a stator assembly 200 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0072] The positioning plate 220 includes a positioning portion 222 and a stepped portion 224. The positioning portion 222 is annular and rests against the end face of the first end of the stator assembly 210. The stepped portion 224 is connected to the positioning portion 222 and is located on the side of the positioning portion 222 close to the stator assembly 210, and is arranged around the side of the stator assembly 210 in the radial direction.

[0073] In this embodiment, the positioning plate 220 includes a positioning portion 222 and a stepped portion 224. The positioning portion 222 is annular and abuts against the end face of the first end of the stator assembly 210 to play a positioning role; the stepped portion 224 is connected to the positioning portion 222 and is located on the side of the positioning portion 222 close to the stator assembly 210. It is arranged around the side of the stator assembly 210 in the radial direction, which can facilitate the installation of the stator assembly 210. When the stator assembly 200 is injection molded, the positioning portion 222 and the stepped portion 224 can provide positioning for the stator assembly 210 in the stator assembly 200.

[0074] This embodiment provides a stator assembly 200 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0075] As shown in Figure 1, the distance between the end surface of the packaging portion 230 axially away from the stator assembly 210 and the surface of the positioning portion 222 on the side close to the stator assembly 210 is a first distance h1, the height of the stator assembly 210 in the axial direction is a third height h2, the height of the step portion 224 in the axial direction is a fourth height h3, and the depth of the second groove 2326 in the axial direction is a first depth H. The first distance h1, the third height h2, the fourth height h3 and the first depth H satisfy the following relationship: H≤h1-h2-h3-2, in millimeters.

[0076] In this embodiment, the distance between the end surface of the mounting portion away from the stator assembly 210 in the axial direction and the surface of the positioning portion 222 on the side close to the stator assembly 210 is a first distance h1, the height of the stator assembly 210 in the axial direction is a third height h2, the height of the step portion 224 in the axial direction is a fourth height h3, and the depth of the second groove 2326 in the axial direction is a first depth H. The first distance h1, the third height h2, the fourth height h3 and the first depth H satisfy the following relationship: H≤h1-h2-h3-2, in millimeters. By setting the first depth H, the first distance h1, the third height h2 The size range of the fourth height h3 and the first depth H satisfies H≤h1-h2-h3-2. Within this size range, the installation of the stator assembly 200 is facilitated while ensuring the working efficiency of the stator assembly 200 and the adjustment amplitude of the natural frequency of the stator assembly 200, which is convenient for the production, installation and injection molding of the stator assembly 200. It can also better adjust the resonant frequency of the motor to avoid the overlap between the resonant frequency of the motor and the driving carrier frequency, thereby reducing the noise emitted by the motor when it is working, improving the high-frequency sound quality of the motor, and improving the working effect of the motor, thereby improving the user experience.

[0077] This embodiment provides a stator assembly 200 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0078] As shown in Figure 1, the axial depth of the second groove 2326 is a first depth H, the radial width of the side of the second groove 2326 away from the stator assembly 210 is a second width L3, the radial width of the side of the second groove 2326 close to the stator assembly 210 is a third width L4, and the angle between the side of the second groove 2326 close to the stator assembly 210 and the bottom wall of the second groove 2326 is a second angle θ2. The first depth H, the second width L3 and the third width L4 satisfy the following relationship: L3=L4+2×H×tan(θ2-90°), and 90°≤θ2≤120°.

[0079] In this embodiment, as shown in FIG6 , the axial depth of the second groove 2326 is a first depth H, the radial width of the second groove 2326 on the side away from the stator assembly 210 is a second width L3, the radial width of the second groove 2326 on the side close to the stator assembly 210 is a third width L4, and the angle between the side of the second groove 2326 close to the stator assembly 210 and the bottom wall of the second groove 2326 is a second angle θ2. The first depth H, the second width L3, and the third width L4 satisfy the following relationship: L3=L4+2×H×tan(θ2-90°) , and 90°≤θ2≤120°, while facilitating the installation of the stator assembly 200, it can ensure the working efficiency of the stator assembly 200 and the adjustment amplitude of the natural frequency of the stator assembly 200, facilitate the production installation and injection molding of the stator assembly 200, and can also better adjust the natural frequency of the motor, adjust the natural frequency of the motor away from the motor drive carrier frequency or the current loop frequency, avoid the motor's resonant frequency and the drive carrier frequency from overlapping each other, thereby reducing the noise emitted by the motor when it is working, improving the high-frequency sound quality of the motor, and also improving the working effect of the motor, thereby improving the user experience.

[0080] Exemplarily, the second angle θ2 may be 90°, the second angle θ2 may also be 100°, the second angle θ2 may be 110°, or the second angle θ2 may be 120°.

[0081] This embodiment provides a stator assembly 200 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0082] The stator assembly 200 further includes an end cover 100 , which is embedded in the mounting hole 2324 .

[0083] In this embodiment, the stator assembly 200 further includes an end cover 100 , which is embedded in the mounting hole 2324 . The provision of the end cover 100 can protect the electric component and improve the smoothness of the rotation of the motor bearing.

[0084] Illustratively, the end cap 100 may be made of a thermosetting material.

[0085] For example, the end cap 100 may be an integrated structure, which simplifies the process difficulty of the end cap 100 during production and reduces the production cost of the end cap 100 .

[0086] This embodiment provides a stator assembly 200 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0087] The packaging portion 230 is an integrated structure of thermosetting material.

[0088] In this embodiment, the packaging part 230 is an integrated structure of thermosetting material. Since thermosetting material has strong plasticity, the material utilization rate can be improved when thermosetting material is used to make the packaging part 230. It is also unnecessary to set anti-electrocorrosion components and there is no need to perform additional conduction operations on the packaging part 230, thereby reducing the cost of the packaging part 230, reducing the operating steps of the motor, and improving the working efficiency of the motor.

[0089] A second aspect of the present application provides an electric component, comprising the stator assembly 200 in any one of the above embodiments.

[0090] The electric component provided in the present application includes the stator assembly 200 as in any of the above embodiments, and thus the electric component includes all the beneficial effects of the stator assembly 200 as in any of the above embodiments.

[0091] A third aspect of the present application provides an electrical appliance, comprising a stator assembly 200 as in any of the above embodiments, or an electric component as in any of the above embodiments.

[0092] The present application provides an electrical appliance, comprising a stator assembly 200 as in any of the above embodiments; or an electric component as in any of the above embodiments, so that the electrical appliance has all the beneficial effects of the stator assembly 200 as in any of the above embodiments, or the electric component as in any of the above embodiments.

[0093] Illustratively, the electric component may be a motor or a compressor.

[0094] The electrical appliance may be an air conditioner, an electric fan or a refrigerator.

[0095] For example, as shown in Figure 7, the solid line E represents the noise change law of the motor when the groove 232 is not set on the side of the motor packaging part 230 close to the second end of the stator assembly 210, and the dotted line F represents the noise change law of the motor when the groove 232 is set on the side of the motor packaging part 230 close to the second end of the stator assembly 210. It can be seen from the change of the curve that by setting the groove 232, the natural frequency of the motor can be adjusted away from the motor drive carrier frequency or the current loop frequency, thereby reducing the noise generated when the motor is working, optimizing the audio effect when the motor is working, and improving the user experience.

[0096] Exemplarily, as shown in FIG. 7 , at the same resonant frequency, the decibel level when the packaging portion 230 of the motor is provided with the groove 232 is lower than the decibel level when the packaging portion 230 is not provided with the groove 232 .

[0097] For example, when the resonance frequency of the motor is between 1000 Hz and 2000 Hz, the noise generated by the motor with the groove 232 provided on the packaging portion is significantly smaller than the noise generated by the motor without the groove 232 provided.

[0098] In the claims, specification and drawings of this application, the term "plurality" refers to two or more. Unless otherwise expressly defined, the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. They are intended only to more conveniently describe this application and simplify the description process, and are not intended to indicate or imply that the device or element referred to must have the specific orientation described, be constructed and operated in a specific orientation. Therefore, these descriptions should not be understood as limiting this application. The terms "connect," "install," and "fix" should be understood in a broad sense. For example, "connection" can be a fixed connection between multiple objects, a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects, or an indirect connection between multiple objects through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood based on the specific circumstances of the above data.

[0099] In the claims, specification, and drawings of this application, the terms "one embodiment," "some embodiments," "a specific embodiment," and the like mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of this application. In the claims, specification, and drawings of this application, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0100] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A stator assembly, wherein: include: stator assembly; a positioning plate, the positioning plate being located at a first end of the stator assembly in the axial direction and contacting the first end of the stator assembly; The packaging part covers the stator assembly and is located at the second end of the stator assembly in the axial direction and on the side of the stator assembly in the radial direction. A groove is arranged on one side of the packaging part close to the second end of the stator assembly.

2. The stator assembly according to claim 1, wherein: Also includes: A mounting portion, wherein the number of the mounting portions is plural and the plurality of the mounting portions are arranged along the circumference of the packaging portion; The groove includes a first groove, which is arranged on a radial side wall of the packaging portion and is located between two adjacent mounting portions among the plurality of mounting portions.

3. The stator assembly according to claim 2, wherein: The number of the first grooves is smaller than the number of the mounting portions.

4. The stator assembly according to claim 2 or 3, wherein: The height of the first groove in the axial direction is a first height L1, the height of the mounting portion in the axial direction is a second height L, and the difference between the second height L and the first height L1 is less than or equal to 3.5 mm.

5. The stator assembly according to any one of claims 2 to 4, wherein: The circumferential width of the first groove is a first width L2, the radius of the packaging portion is a first radius R1, the central angle corresponding to the first groove is a first angle θ1, and the first width L2, the first radius R1 and the first angle θ1 satisfy the following relationship: L2=2R1×sin(θ1 / 2).

6. The stator assembly according to any one of claims 2 to 5, wherein: The radial thickness of the first groove is a first thickness t1, the radius of the packaging portion is a first radius R1, the radius of the stator assembly is a second radius R2, and the first thickness t1, the first radius R1 and the second radius R2 satisfy the following relationship: t1=R1-(R2+1.5), in millimeters.

7. The stator assembly according to any one of claims 1 to 6, wherein: A mounting hole is provided on one side of the packaging portion, and the mounting hole is opposite to the inner hole of the stator assembly; The groove includes a second groove arranged around the mounting hole.

8. The stator assembly according to claim 7, wherein: The width of the second groove in the radial direction decreases from a side away from the stator assembly to a side close to the stator assembly.

9. The stator assembly according to claim 7 or 8, wherein: The positioning plate comprises: A positioning portion, the positioning portion is annular and abuts against an end surface of the first end of the stator assembly; The step portion is connected to the positioning portion, is located on a side of the positioning portion close to the stator assembly, and is arranged around the side of the stator assembly in the radial direction.

10. The stator assembly according to claim 9, wherein: The distance between the end surface of the packaging portion axially away from the stator assembly and the surface of the positioning portion on the side close to the stator assembly is a first distance h1, the axial height of the stator assembly is a third height h2, the axial height of the step portion is a fourth height h3, the axial depth of the second groove is a first depth H, and the first distance h1, the third height h2, the fourth height h3 and the first depth H satisfy the following relationship: H≤h1-h2-h3-2, in millimeters.

11. The stator assembly according to claim 9 or 10, wherein: The axial depth of the second groove is a first depth H, the radial width of the second groove on the side away from the stator assembly is a second width L3, the radial width of the second groove on the side close to the stator assembly is a third width L4, the angle between the side of the second groove close to the stator assembly and the bottom wall of the second groove is a second angle θ2, and the first depth H, the second width L3 and the third width L4 satisfy the following relationship: L3=L4+2×H×tan(θ2-90°), and 90°≤θ2≤120°.

12. The stator assembly according to any one of claims 7 to 11, wherein: Also includes: An end cover is embedded in the mounting hole.

13. The stator assembly according to any one of claims 1 to 12, wherein: The packaging part is an integrated structure of thermosetting material.

14. An electric component, wherein: Comprising the stator assembly according to any one of claims 1 to 13.

15. An electrical appliance, wherein: A stator assembly comprising any one of claims 1 to 13; or The electric assembly of claim 14.

Images