Stator assembly, motor and electrical equipment

Abstract

The utility model provides a stator assembly, a motor and electrical equipment, the stator assembly comprises a stator iron core and a working winding, the stator iron core comprises a plurality of first teeth and a plurality of second teeth, the plurality of first teeth and the plurality of second teeth are alternately arranged along the circumferential direction of the stator assembly, the first teeth comprise first tooth boots, the second teeth comprise second tooth boots, and the working winding is arranged between the first tooth boots and the second tooth boots. The width of the first tooth boots in the circumferential direction of the stator assembly is not equal to the width of the second tooth boots in the circumferential direction of the stator assembly, and the working windings are wound around the first teeth. The widths of the first tooth boot and the second tooth boot are set to be unequal, so that the cogging torque fluctuation of the motor can be weakened, and the electromagnetic noise of the motor is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, and in particular to a stator assembly, a motor and electrical equipment. Background Art

[0002] Currently, in related technologies, a motor is equipped with a stator assembly that generates a rotating magnetic field when powered. The stator core of the stator assembly is equipped with multiple evenly distributed stator teeth. Working windings are wound around the stator teeth. When the working windings are energized, the magnetic field generated by the current in the windings interacts with the magnetic field in the rotor, causing the rotor to rotate, converting electrical energy into mechanical energy within the motor. However, during operation, the motor's cogging torque fluctuates significantly, resulting in high electromagnetic noise, which affects the user experience. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] To this end, a first aspect of the present invention provides a stator assembly.

[0005] A second aspect of the present invention provides a motor.

[0006] A third aspect of the present invention provides an electrical device.

[0007] In view of this, the first aspect of the present invention provides a stator assembly, including a stator core and a working winding, the stator core including a plurality of first teeth and a plurality of second teeth, the plurality of first teeth and the plurality of second teeth being arranged alternately along the circumference of the stator assembly, the first tooth including a first tooth shoe, the second tooth including a second tooth shoe, the width of the first tooth shoe in the circumferential direction of the stator assembly is not equal to the width of the second tooth shoe in the circumferential direction of the stator assembly, and the working winding is wound around the first tooth.

[0008] The present application provides a stator assembly comprising a stator core and a working winding, wherein the stator core comprises a plurality of first teeth and a plurality of second teeth, the plurality of first teeth and the plurality of second teeth being arranged alternately along the circumference of the stator assembly. The asymmetric design helps optimize the distribution of the magnetic field and can also make the magnetic field generated in the motor more evenly distributed around the stator assembly after the working winding is energized, thereby improving the motor efficiency and electromagnetic performance. The first tooth comprises a first tooth shoe, and the second tooth comprises a second tooth shoe. Since the width of the first tooth shoe in the circumferential direction of the stator assembly is not equal to the width of the second tooth shoe in the circumferential direction of the stator assembly, and the working winding is wound around the first tooth, when the stator assembly is operating, the magnetic field generated by the current in the winding can more effectively interact with the magnetic field in the rotor, generating a greater torque. Due to the optimized magnetic field distribution, the stability of the torque fluctuation can be improved, making the motor run more smoothly, thereby reducing the electromagnetic noise of the motor.

[0009] Furthermore, by setting the circumferential width of the first tooth shoe and the circumferential width of the second tooth shoe to be unequal, the surface area of ​​the stator assembly can be increased, which is beneficial for heat dissipation. This further improves the heat dissipation performance of the motor and ensures stable operation of the motor even in high-temperature environments.

[0010] Furthermore, the different widths of the first and second tooth shoes within the stator assembly can help reduce noise and vibration generated during motor operation. Because the magnetic field is more evenly distributed, the electromagnetic force within the motor is more balanced, reducing vibration and noise caused by unbalanced electromagnetic forces.

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

[0012] In some technical solutions of the present invention, optionally, the first tooth includes a first tooth portion, and the first tooth portion is connected to the first tooth shoe on the side close to the axis of the stator assembly; the second tooth includes a second tooth portion, and the second tooth portion is connected to the second tooth shoe on the side close to the axis of the stator assembly; the width of the first tooth portion in the circumferential direction of the stator assembly is not equal to the width of the second tooth portion in the circumferential direction of the stator assembly.

[0013] In this technical solution, the first tooth includes a first tooth portion, and the first tooth portion is connected to the first tooth shoe on the side close to the axis of the stator assembly, which can improve the stability of the first tooth structure; the second tooth includes a second tooth portion, and the second tooth portion is connected to the second tooth shoe on the side close to the axis of the stator assembly, which can further improve the stability of the second tooth structure; the width of the first tooth portion in the circumferential direction of the stator assembly is not equal to the width of the second tooth portion in the circumferential direction of the stator assembly, which can improve the output torque of the motor, so that the motor can generate greater power during operation.

[0014] Furthermore, by setting the circumferential width of the first teeth and the second teeth unequal in the stator assembly's circumferential direction, the system can be adapted to different motor types and applications. By adjusting parameters such as the number and width of the first and second teeth, as well as the number and arrangement of the working windings, various performance requirements and usage needs can be flexibly met.

[0015] In some technical solutions of the present invention, optionally, the width of the first tooth portion in the circumferential direction of the stator assembly is greater than the width of the second tooth portion in the circumferential direction of the stator assembly; and the working winding is wound around the first tooth portion.

[0016] In this technical solution, by setting the width of the first tooth portion in the circumferential direction of the stator assembly to be greater than the width of the second tooth portion in the circumferential direction of the stator assembly, and by simultaneously winding the working winding around the first tooth portion, electromagnetic interference between windings can be reduced, and the pole pitch coefficient can be increased, making the coupling between windings more reasonable and improving the winding coefficient. The increase in the winding coefficient can further enhance the electromagnetic torque generated by the motor, thereby increasing the electromagnetic performance efficiency of the motor. At the same time, by optimizing the winding distribution and pole pitch coefficient, the motor operates more smoothly, reducing performance fluctuations caused by electromagnetic interference between windings, and improving the reliability and service life of the motor. Furthermore, setting the width of the first tooth portion in the circumferential direction of the stator assembly to be greater than the width of the second tooth portion in the circumferential direction of the stator assembly can optimize the winding distribution, thereby reducing magnetic resistance, making the flow of magnetic flux in the stator assembly smoother, and improving the electromagnetic conversion efficiency of the motor. At the same time, the reduced electromagnetic interference also helps to reduce the noise and vibration of the motor.

[0017] In some technical solutions of the present invention, optionally, the stator assembly further includes an auxiliary winding, which is wound around the second tooth portion.

[0018] In this technical solution, the stator assembly also includes an auxiliary winding, which is wound around the second tooth portion. Because the circumferential width of the first tooth portion is greater than the circumferential width of the second tooth portion, winding the auxiliary winding around the second tooth portion (which has a smaller width) allows the magnetic field generated by the auxiliary winding to interact more effectively with the magnetic field in the rotor, generating greater torque and further optimizing the magnetic field distribution. This, in turn, improves the stability of torque fluctuations, resulting in smoother motor operation and reduced electromagnetic noise.

[0019] In some technical solutions of the present invention, optionally, a ratio of a width of the first tooth portion in the circumferential direction of the stator assembly to a width of the second tooth portion in the circumferential direction of the stator assembly is greater than or equal to 1.3 and less than or equal to 1.7.

[0020] In this technical solution, the ratio of the width of the first tooth portion in the circumferential direction of the stator assembly to the width of the second tooth portion in the circumferential direction of the stator assembly is greater than or equal to 1.3 and less than or equal to 1.7. By limiting the ratio of the width of the first tooth portion in the circumferential direction of the stator assembly to the width of the second tooth portion in the circumferential direction of the stator assembly, electromagnetic imbalance can be reduced and the operating smoothness of the motor can be improved. At the same time, limiting the tooth ratio can further optimize the magnetic field distribution in the stator assembly. The uniform distribution of the magnetic field can improve the electromagnetic conversion efficiency of the motor, reduce energy loss, and improve the noise and vibration performance of the motor.

[0021] In some technical solutions of the present invention, optionally, the ratio of the width of the first tooth portion in the circumferential direction of the stator assembly to the width of the second tooth portion in the circumferential direction of the stator assembly is a first ratio; the ratio of the width of the first tooth shoe in the circumferential direction of the stator assembly to the width of the second tooth shoe in the circumferential direction of the stator assembly is a second ratio; the first ratio is positively correlated with the second ratio.

[0022] In this technical solution, the ratio of the width of the first tooth portion in the circumferential direction of the stator assembly to the width of the second tooth portion in the circumferential direction of the stator assembly is a first ratio; the ratio of the width of the first tooth shoe in the circumferential direction of the stator assembly to the width of the second tooth shoe in the circumferential direction of the stator assembly is a second ratio. Because the first ratio and the second ratio are positively correlated, the first ratio and the second ratio change synchronously, thereby reducing electromagnetic imbalance and improving the operating smoothness of the motor. At the same time, by setting the tooth width ratio and the tooth shoe width ratio equal, the stress distribution in each part of the stator assembly is more uniform when subjected to mechanical loads. This reduces stress concentration and improves the mechanical strength and durability of the stator assembly. Furthermore, the coordinated ratio of the tooth and tooth shoe widths helps optimize the magnetic field distribution in the stator assembly. This uniform magnetic field distribution improves the electromagnetic conversion efficiency of the motor, reduces energy loss, and improves the noise and vibration performance of the motor.

[0023] Furthermore, by setting the ratio of the first tooth width to the second tooth width equal to the ratio of the first tooth shoe width to the second tooth shoe width along the circumference of the stator assembly, the motor's performance stability under different operating conditions can be improved. This allows the motor to maintain stable performance under varying loads and speeds, improving its reliability and service life.

[0024] Specifically, the positive correlation between the first ratio and the second ratio means that the first ratio and the second ratio increase or decrease synchronously. When the first ratio increases, the second ratio increases, which can improve electromagnetic balance and, in turn, the smooth operation of the motor. When the first ratio decreases, the second ratio decreases, which can also ensure smooth operation of the motor. When the second ratio increases, the first ratio increases. When the second ratio decreases, the first ratio decreases. That is, if one of the first and second ratios increases or decreases, the other ratio will also increase or decrease synchronously.

[0025] In some technical solutions of the present invention, optionally, the width of the first tooth shoe in the circumferential direction of the stator assembly is greater than the width of the second tooth shoe in the circumferential direction of the stator assembly.

[0026] In this technical solution, the width of the first tooth shoe in the circumferential direction of the stator assembly is greater than the width of the second tooth shoe in the circumferential direction of the stator assembly, which can increase the winding coefficient of the motor, so that the magnetic field generated in the motor can be more evenly distributed around the stator assembly, thereby improving the motor efficiency and electromagnetic performance.

[0027] In some technical solutions of the present invention, optionally, the first tooth shoe and / or the second tooth shoe is provided with at least one groove, the opening of the groove faces the axis of the stator assembly, and the groove is recessed away from the axis of the stator assembly.

[0028] In this technical solution, the first and / or second tooth shoes are provided with at least one groove, the opening of which faces the axis of the stator assembly and which is recessed away from the axis of the stator assembly. This helps reduce noise and vibration generated during motor operation. It also improves the uniformity of magnetic field distribution, making the electromagnetic force within the motor more balanced, thereby reducing vibration and noise caused by unbalanced electromagnetic force.

[0029] A second aspect of the present invention provides a motor, comprising a stator assembly as described in any one of the above technical solutions.

[0030] The present application provides a motor comprising a stator assembly as described in any of the above technical solutions. Therefore, this motor has all the beneficial effects of the stator assembly described in any of the above technical solutions. When the motor is operating, because the width of the first tooth shoe in the internal stator assembly in the circumferential direction of the stator assembly is not equal to the width of the second tooth shoe in the circumferential direction of the stator assembly, the magnetic field generated by the current in the winding can more effectively interact with the magnetic field in the rotor, generating a greater torque. Furthermore, due to the optimization of the magnetic field distribution, the stability of the torque fluctuation can be improved, the operation of the motor can be made smoother, and the electromagnetic noise of the motor can be reduced.

[0031] In some technical solutions of the present invention, optionally, the motor further includes a rotor core, which is arranged in the stator core; wherein, an air gap is provided between the edge of the first tooth shoe and / or the second tooth shoe on the side close to the axis of the stator assembly and the rotor core; the width of the air gap in the radial direction of the stator assembly is a first width; in the circumferential direction of the stator assembly, the first width decreases from both sides of the first tooth shoe and / or the second tooth shoe to the middle.

[0032] In this technical solution, the motor also includes a rotor core disposed within the stator core. An air gap is defined between the rotor core and the edge of the first and / or second tooth boots on the side closest to the axis of the stator assembly. The air gap has a first width in the radial direction of the stator assembly. The first width decreases from the sides of the first and / or second tooth boots toward the center of the stator assembly in the circumferential direction of the stator assembly. This optimizes the magnetic flux path, reduces magnetic resistance, and improves the electromagnetic conversion efficiency of the motor. Furthermore, by providing a uniform air gap, mechanical friction and electromagnetic force fluctuations during motor operation are reduced, noise and vibration are reduced, and the smoothness of the motor's operation is improved.

[0033] A third aspect of the present invention provides an electrical device, comprising a stator assembly as described in any one of the above technical solutions; or a motor as described in any one of the above technical solutions.

[0034] The present application provides an electrical device comprising a stator assembly according to any one of the above technical solutions or a motor according to any one of the above technical solutions. Therefore, the electrical device possesses all the beneficial effects of the stator assembly or motor according to any one of the above technical solutions.

[0035] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0037] Figure 1 One of the cross-sectional views of a stator assembly according to one embodiment of the present invention is shown;

[0038] Figure 2 FIG2 shows a second cross-sectional view of a stator assembly according to an embodiment of the present invention;

[0039] Figure 3 FIG3 shows a third cross-sectional view of a stator assembly according to an embodiment of the present invention;

[0040] Figure 4 shows a cross-sectional view of a motor according to an embodiment of the present utility model;

[0041] Figure 5 for Figure 4 The diagram shows a partial schematic diagram of a motor at point A according to an embodiment of the present invention.

[0042] in, Figures 1 to 5 The corresponding relationship between the reference numerals and component names is as follows:

[0043] 100 stator assembly, 110 stator core, 120 first tooth, 122 first tooth shoe, 124 first tooth portion, 130 second tooth, 132 second tooth shoe, 134 second tooth portion, 140 working winding, 150 axis, 160 auxiliary winding, 170 groove, 172 opening, 200 motor, 210 rotor core, 220 air gap. DETAILED DESCRIPTION

[0044] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention 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 without conflict.

[0045] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0046] Refer to the following Figures 1 to 5 A stator assembly, a motor, and an electrical device according to some embodiments of the present invention are described.

[0047] In the embodiment of the present utility model, Figure 1 、 Figure 2 and Figure 3 As shown, a stator assembly 100 is provided, including a stator core 110 and a working winding 140. The stator core 110 includes a plurality of first teeth 120 and a plurality of second teeth 130. The plurality of first teeth 120 and the plurality of second teeth 130 are alternately arranged along the circumference of the stator assembly 100. The first teeth 120 include a first tooth shoe 122, and the second teeth 130 include a second tooth shoe 132. The width of the first tooth shoe 122 in the circumferential direction of the stator assembly 100 is not equal to the width of the second tooth shoe 132 in the circumferential direction of the stator assembly 100. The working winding 140 is wound around the first teeth 120.

[0048] A stator assembly 100 provided in the present application includes a stator core 110 and a working winding 140. The stator core 110 includes a plurality of first teeth 120 and a plurality of second teeth 130. The plurality of first teeth 120 and the plurality of second teeth 130 are alternately arranged along the circumference of the stator assembly 100. The asymmetric design helps to optimize the distribution of the magnetic field. After the working winding 140 is energized, the magnetic field generated in the motor 200 can be more evenly distributed around the stator assembly 100, thereby improving the efficiency and electromagnetic performance of the motor 200. The first tooth 120 includes a first tooth shoe 122, and the second tooth 130 includes a second tooth shoe 132. Since the width of the first tooth shoe 122 in the circumferential direction of the stator assembly 100 is not equal to the width of the second tooth shoe 132 in the circumferential direction of the stator assembly 100, and the working winding 140 is wound around the first tooth 120, when the stator assembly 100 is working, the magnetic field generated by the current in the winding can more effectively interact with the magnetic field in the rotor to generate a greater torque, and due to the optimization of the magnetic field distribution, the stability of the torque fluctuation can be improved, so that the operation of the motor 200 is smoother, thereby reducing the electromagnetic noise of the motor 200.

[0049] Furthermore, by arranging the circumferential width of the first tooth shoe 122 and the circumferential width of the second tooth shoe 132 of the stator assembly 100 to be unequal, the surface area of ​​the stator assembly 100 can be increased, facilitating heat dissipation. This further improves the heat dissipation performance of the motor 200 and ensures stable operation of the motor 200 even in high-temperature environments.

[0050] Furthermore, the different widths of the first tooth shoe 122 and the second tooth shoe 132 within the stator assembly 100 can help reduce noise and vibration generated during operation of the motor 200. Due to the more uniform magnetic field distribution, the electromagnetic force within the motor 200 is also more balanced, thereby reducing vibration and noise caused by unbalanced electromagnetic force.

[0051] Specifically, the width of the first tooth shoe 122 is H2, and the width of the second tooth shoe 132 is L1.

[0052] Specifically, the circumferential direction of the stator assembly 100 is the direction indicated by B.

[0053] This embodiment provides a stator assembly 100 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0054] like Figure 1As shown, the first tooth 120 includes a first tooth portion 124, and the first tooth portion 124 is connected to the first tooth shoe 122 on the side close to the axis 150 of the stator assembly 100; the second tooth 130 includes a second tooth portion 134, and the second tooth portion 134 is connected to the second tooth shoe 132 on the side close to the axis 150 of the stator assembly 100; the width of the first tooth portion 124 in the circumferential direction of the stator assembly 100 is not equal to the width of the second tooth portion 134 in the circumferential direction of the stator assembly 100.

[0055] In this embodiment, the first tooth 120 includes a first tooth portion 124, and the first tooth portion 124 is connected to the first tooth shoe 122 on the side close to the axis 150 of the stator assembly 100, which can improve the stability of the structure of the first tooth 120; the second tooth 130 includes a second tooth portion 134, and the second tooth portion 134 is connected to the second tooth shoe 132 on the side close to the axis 150 of the stator assembly 100, which can further improve the stability of the structure of the second tooth 130; the width of the first tooth portion 124 in the circumferential direction of the stator assembly 100 is not equal to the width of the second tooth portion 134 in the circumferential direction of the stator assembly 100, which can improve the output torque of the motor 200, so that the motor 200 can generate greater power during operation.

[0056] Furthermore, by setting the circumferential width of the first teeth 124 and the circumferential width of the second teeth 134 to be unequal, the stator assembly 100 can be adapted to different types of motors 200 and different application scenarios. By adjusting parameters such as the number and width of the first and second teeth 120, 130, and the number and arrangement of turns of the working winding 140, different performance requirements and usage needs can be flexibly met.

[0057] This embodiment provides a stator assembly 100 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0058] like Figure 1 and Figure 2 As shown, the width of the first tooth portion 124 in the circumferential direction of the stator assembly 100 is greater than the width of the second tooth portion 134 in the circumferential direction of the stator assembly 100 ; the working winding 140 is wound around the first tooth portion 124 .

[0059] In this embodiment, by setting the width of the first tooth portion 124 in the circumferential direction of the stator assembly 100 to be greater than the width of the second tooth portion 134 in the circumferential direction of the stator assembly 100, and by winding the working winding 140 around the first tooth portion 124, electromagnetic interference between windings can be reduced, and the pole pitch coefficient can be increased, making the coupling between windings more reasonable and improving the winding coefficient. This increase in the winding coefficient can further improve the electromagnetic torque generated by the motor 200, thereby increasing the electromagnetic performance efficiency of the motor 200. At the same time, by optimizing the winding distribution and pole pitch coefficient, the operation of the motor 200 is more stable, reducing performance fluctuations caused by electromagnetic interference between windings, and improving the reliability and service life of the motor 200. Furthermore, setting the width of the first tooth portion 124 in the circumferential direction of the stator assembly 100 to be greater than the width of the second tooth portion 134 in the circumferential direction of the stator assembly 100 can optimize the winding distribution, thereby reducing magnetic resistance, making the flow of magnetic flux in the stator assembly 100 smoother, and improving the electromagnetic conversion efficiency of the motor 200. At the same time, the reduced electromagnetic interference also helps to reduce the noise and vibration of the motor 200.

[0060] This embodiment provides a stator assembly 100 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0061] like Figure 2 As shown, the stator assembly 100 further includes an auxiliary winding 160 , which is wound around the second tooth portion 134 .

[0062] In this embodiment, the stator assembly 100 further includes an auxiliary winding 160, which is wound around the second tooth portion 134. Because the width of the first tooth portion 124 in the circumferential direction of the stator assembly 100 is greater than the width of the second tooth portion 134 in the circumferential direction of the stator assembly 100, winding the auxiliary winding 160 around the second tooth portion 134, which has a smaller width, allows the magnetic field generated by the auxiliary winding 160 to more effectively interact with the magnetic field in the rotor, generating greater torque, further optimizing the magnetic field distribution, and thereby improving the stability of torque fluctuations, thereby ensuring smoother operation of the motor 200 and reducing electromagnetic noise of the motor 200.

[0063] This embodiment provides a stator assembly 100 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0064] like Figure 4 and Figure 5 As shown, the ratio of the width of the first tooth portion 124 in the circumferential direction of the stator assembly 100 to the width of the second tooth portion 134 in the circumferential direction of the stator assembly 100 is greater than or equal to 1.3 and less than or equal to 1.7.

[0065] In this embodiment, the ratio of the width of the first tooth portion 124 in the circumferential direction of the stator assembly 100 to the width of the second tooth portion 134 in the circumferential direction of the stator assembly 100 is greater than or equal to 1.3 and less than or equal to 1.7. By limiting the ratio of the width of the first tooth portion 124 in the circumferential direction of the stator assembly 100 to the width of the second tooth portion 134 in the circumferential direction of the stator assembly 100, electromagnetic imbalance can be reduced and the operating smoothness of the motor 200 can be improved. At the same time, by limiting the ratio between the width of the first tooth portion 124 and the width of the second tooth portion 134, the magnetic field distribution in the stator assembly 100 can be further optimized. The uniform distribution of the magnetic field can improve the electromagnetic conversion efficiency of the motor 200, reduce energy loss, and improve the noise and vibration performance of the motor 200.

[0066] Specifically, the width of the first tooth portion 124 in the circumferential direction of the stator assembly 100 is H1, the width of the second tooth portion 134 in the circumferential direction of the stator assembly 100 is L2, and the ratio of the width H1 of the first tooth portion 124 in the circumferential direction of the stator assembly 100 to the width L2 of the second tooth portion 134 in the circumferential direction of the stator assembly 100 is greater than or equal to 1.3 and less than or equal to 1.7.

[0067] Specifically, the ratio of the width H1 of the first tooth portion 124 in the circumferential direction of the stator assembly 100 to the width L2 of the second tooth portion 134 in the circumferential direction of the stator assembly 100 may be 1.3, the ratio of the width H1 of the first tooth portion 124 in the circumferential direction of the stator assembly 100 to the width L2 of the second tooth portion 134 in the circumferential direction of the stator assembly 100 may be 1.4, the ratio of the width H1 of the first tooth portion 124 in the circumferential direction of the stator assembly 100 to the width L2 of the second tooth portion 134 in the circumferential direction of the stator assembly 100 may be 1.5, and the ratio of the width H1 of the first tooth portion 124 in the circumferential direction of the stator assembly 100 to the width L2 of the second tooth portion 134 in the circumferential direction of the stator assembly 100 may be 1.6.

[0068] This embodiment provides a stator assembly 100 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0069] The ratio of the circumferential width of the first tooth portion 124 in the stator assembly 100 to the circumferential width of the second tooth portion 134 in the stator assembly 100 is a first ratio; the ratio of the circumferential width of the first tooth shoe 122 in the stator assembly 100 to the circumferential width of the second tooth shoe 132 in the stator assembly 100 is a second ratio; the first ratio is positively correlated with the second ratio.

[0070] In this embodiment, the ratio of the circumferential width of the first tooth portion 124 to the circumferential width of the second tooth portion 134 is a first ratio; the ratio of the circumferential width of the first tooth shoe 122 to the circumferential width of the second tooth shoe 132 is a second ratio. Because the first ratio and the second ratio are positively correlated, the first ratio and the second ratio change synchronously, thereby reducing electromagnetic imbalance and improving the operating smoothness of the motor 200. At the same time, by setting the tooth width ratio and the tooth shoe width ratio equal, the stress distribution of each part of the stator assembly 100 is more uniform when subjected to mechanical loads. This reduces stress concentration and improves the mechanical strength and durability of the stator assembly 100. Furthermore, the coordinated ratio of the tooth and tooth shoe widths helps optimize the magnetic field distribution in the stator assembly 100. The uniform distribution of the magnetic field can improve the electromagnetic conversion efficiency of the motor 200 , reduce energy loss, and improve the noise and vibration performance of the motor 200 .

[0071] Furthermore, by setting the ratio of the width of the first tooth portion 124 to the width of the second tooth portion 134 equal to the ratio of the width of the first tooth shoe 122 to the width of the second tooth shoe 132 in the circumferential direction of the stator assembly 100, the performance stability of the motor 200 under different operating conditions can be improved. The motor 200 can maintain stable performance under different loads and speeds, thereby improving the reliability and service life of the motor 200.

[0072] Specifically, the positive correlation between the first ratio and the second ratio means that the magnitudes of the first ratio and the second ratio increase or decrease synchronously. When the first ratio increases, the second ratio increases, which can improve electromagnetic balance and thereby improve the smooth operation of the motor 200. When the first ratio decreases, the second ratio decreases, which can also ensure the smooth operation of the motor 200. When the second ratio increases, the first ratio increases. When the second ratio decreases, the first ratio decreases, that is, if one of the first and second ratios increases or decreases, the other ratio will also increase or decrease synchronously.

[0073] This embodiment provides a stator assembly 100 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0074] The width of the first tooth shoe 122 in the circumferential direction of the stator assembly 100 is greater than the width of the second tooth shoe 132 in the circumferential direction of the stator assembly 100 .

[0075] In this embodiment, the circumferential width of the first tooth shoe 122 in the stator assembly 100 is greater than the circumferential width of the second tooth shoe 132 in the stator assembly 100, which can increase the winding coefficient of the motor 200 and enable the magnetic field generated in the motor 200 to be more evenly distributed around the stator assembly 100, thereby improving the efficiency and electromagnetic performance of the motor 200.

[0076] This embodiment provides a stator assembly 100 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0077] like Figure 1 As shown, the first tooth shoe 122 is provided with at least one groove 170 , an opening 172 of the groove 170 faces the axis 150 of the stator assembly 100 , and the groove 170 is recessed away from the axis 150 of the stator assembly 100 .

[0078] At least one groove 170 may also be provided on the second tooth shoe 132 , with an opening 172 of the groove 170 facing the axis 150 of the stator assembly 100 , and the groove 170 is recessed away from the axis 150 of the stator assembly 100 .

[0079] At least one groove 170 may also be provided on both the first tooth shoe 122 and the second tooth shoe 132 , with an opening 172 of the groove 170 facing the axis 150 of the stator assembly 100 and the groove 170 being recessed away from the axis 150 of the stator assembly 100 .

[0080] In this embodiment, the first tooth shoe 122 and / or the second tooth shoe 132 are provided with at least one groove 170. The opening 172 of the groove 170 faces the axis 150 of the stator assembly 100, and the groove 170 is recessed away from the axis 150 of the stator assembly 100. This helps reduce noise and vibration generated during operation of the motor 200. Furthermore, the uniformity of the magnetic field distribution is improved, making the electromagnetic force within the motor 200 more balanced, thereby reducing vibration and noise caused by unbalanced electromagnetic force.

[0081] Specifically, two grooves 170 may be provided on the first tooth shoe 122 , while one groove 170 may be provided on the second tooth shoe 132 .

[0082] In the embodiment of the present utility model, Figure 4 and Figure 5 As shown, a motor 200 is provided, comprising the stator assembly 100 according to any one of the above embodiments.

[0083] The present application provides a motor 200, which includes the stator assembly 100 according to any one of the above embodiments. Therefore, the motor 200 has all the beneficial effects of the stator assembly 100 according to any one of the above embodiments.

[0084] The motor 200 also includes a rotor core 210, which is arranged in the stator core 110; wherein, an air gap 220 is provided between the edge of the first tooth shoe 122 and / or the second tooth shoe 132 on the side close to the axis 150 of the stator assembly 100 and the rotor core 210; the width of the air gap 220 in the radial direction of the stator assembly 100 is a first width; in the circumferential direction of the stator assembly 100, the first width decreases from both sides of the first tooth shoe 122 and / or the second tooth shoe 132 to the middle.

[0085] In this embodiment, the motor 200 further includes a rotor core 210 disposed within the stator core 110. An air gap 220 is defined between the rotor core 210 and the edge of the first tooth shoe 122 and / or the second tooth shoe 132 on the side closest to the axis 150 of the stator assembly 100. The air gap 220 has a first width in the radial direction of the stator assembly 100. In the circumferential direction of the stator assembly 100, the first width decreases from both sides of the first tooth shoe 122 and / or the second tooth shoe 132 toward the center. This optimizes the magnetic flux path, reduces magnetic resistance, and improves the electromagnetic conversion efficiency of the motor 200. Furthermore, by providing a uniform air gap 220, mechanical friction and electromagnetic force fluctuations during operation of the motor 200 are reduced, thereby reducing noise and vibration and improving the smooth operation of the motor 200.

[0086] Specifically, the radial direction of the stator assembly 100 is the direction indicated by F1 ; the first width is the width indicated by H3 .

[0087] When the motor 200 is working, since the width of the first tooth shoe 122 in the internal stator assembly 100 in the circumferential direction of the stator assembly 100 is not equal to the width of the second tooth shoe 132 in the circumferential direction of the stator assembly 100, the magnetic field generated by the current in the working winding 140 and the auxiliary winding 160 can more effectively interact with the magnetic field in the rotor core 210 to generate a greater torque. Due to the optimization of the magnetic field distribution, the stability of the torque fluctuation can be improved, and the operation of the motor 200 can be made smoother, thereby reducing the electromagnetic noise of the motor 200.

[0088] In an embodiment of the present invention, an electrical device is provided, including the stator assembly 100 according to any one of the above embodiments; or the motor 200 according to any one of the above embodiments.

[0089] The present application provides an electrical device, comprising the stator assembly 100 according to any one of the above embodiments; or the motor 200 according to any one of the above embodiments. Therefore, the electrical device has all the beneficial effects of the stator assembly 100 and the motor 200 according to any one of the above embodiments.

[0090] Specifically, the number of the first teeth 120 and the second teeth 130 may be an integer multiple of 4, which can further improve the running stability of the motor 200 .

[0091] Specifically, the motor 200 may be a single-phase motor.

[0092] Specifically, the electrical device may be a fan.

[0093] In the claims, specification and drawings of the present invention, the term "plurality" refers to two or more. Unless otherwise expressly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the purpose of more conveniently describing the present invention and making the description process simpler. It is 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 cannot be understood as limiting the present invention. The terms "connect", "install", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection between multiple objects, or 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 ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood based on the specific circumstances of the above data.

[0094] In the claims, specification, and drawings of the present invention, 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 the present invention. In the claims, specification, and drawings of the present invention, schematic representations 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 any one or more embodiments or examples.

[0095] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A stator assembly, characterized in that: include: a stator core, the stator core comprising a plurality of first teeth and a plurality of second teeth, the plurality of first teeth and the plurality of second teeth being alternately arranged along a circumferential direction of the stator assembly, the first teeth comprising a first tooth shoe, the second teeth comprising a second tooth shoe, the width of the first tooth shoe in the circumferential direction of the stator assembly being unequal to the width of the second tooth shoe in the circumferential direction of the stator assembly; A working winding is wound around the first tooth.

2. The stator assembly according to claim 1, characterized in that The first tooth includes a first tooth portion, and a side of the first tooth portion close to the axis of the stator assembly is connected to the first tooth shoe; The second tooth includes a second tooth portion, and a side of the second tooth portion close to the axis of the stator assembly is connected to the second tooth shoe; A width of the first tooth portion in the circumferential direction of the stator assembly is not equal to a width of the second tooth portion in the circumferential direction of the stator assembly.

3. The stator assembly according to claim 2, characterized in that The width of the first tooth portion in the circumferential direction of the stator assembly is greater than the width of the second tooth portion in the circumferential direction of the stator assembly; The working winding is wound around the first tooth portion.

4. The stator assembly according to claim 3, characterized in that The stator assembly further comprises: An auxiliary winding is wound around the second tooth portion.

5. The stator assembly according to claim 2, characterized in that A ratio of a width of the first tooth portion in the circumferential direction of the stator assembly to a width of the second tooth portion in the circumferential direction of the stator assembly is greater than or equal to 1.3 and less than or equal to 1.

7.

6. The stator assembly according to claim 2, characterized in that A ratio of a width of the first tooth portion in the circumferential direction of the stator assembly to a width of the second tooth portion in the circumferential direction of the stator assembly is a first ratio; A ratio of a width of the first tooth shoe in the circumferential direction of the stator assembly to a width of the second tooth shoe in the circumferential direction of the stator assembly is a second ratio; The first ratio is positively correlated with the second ratio.

7. The stator assembly according to any one of claims 1 to 6, characterized in that: The width of the first tooth shoe in the circumferential direction of the stator assembly is greater than the width of the second tooth shoe in the circumferential direction of the stator assembly.

8. The stator assembly according to any one of claims 1 to 6, characterized in that: The first tooth shoe and / or the second tooth shoe is provided with at least one groove, the opening of the groove faces the axis of the stator assembly, and the groove is recessed in a direction away from the axis of the stator assembly.

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

10. The motor according to claim 9, characterized in that Also includes: a rotor core, the rotor core being disposed in the stator core; Wherein, an air gap is formed between the edge of the first tooth shoe and / or the second tooth shoe on the side close to the axis of the stator assembly and the rotor core; The width of the air gap in the radial direction of the stator assembly is a first width; In the circumferential direction of the stator assembly, the first width decreases from both sides of the first tooth shoe and / or the second tooth shoe toward the middle.

11. An electrical device, characterized in that: include: The stator assembly according to any one of claims 1 to 8; or A motor as claimed in claim 9 or 10.

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