Stator assembly and motor

Abstract

The utility model provides a stator assembly and a motor, and particularly relates to the technical field of motors. Wherein the stator assembly comprises a stator iron core, the stator iron core is provided with a plurality of first slot groups and a plurality of second slot groups, and the plurality of first slot groups and the plurality of second slot groups are alternately arranged along the circumferential direction of the stator iron core; the first slot group comprises a plurality of first stator slots; the second slot group comprises a plurality of second stator slots; wherein the groove area of each first stator groove in the plurality of first stator grooves is a first area, the groove area of each second stator groove in the plurality of second stator grooves is a second area, and the first area is larger than the second area. When the motor is in a high-power and high-magnetic-flux working state, the first stator slot structure and the second stator slot structure are different, so that the form of a magnetic field generated by a motor winding is close to sine wave distribution, and the motor noise is well improved. Meanwhile, in a low-power and low-speed state, the low-gear electromagnetic noise suppression capability of the motor is improved, and the noise of the motor is further reduced.

Description

Technical Field

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

[0002] Currently, in related technologies, a fan motor consists of a stator assembly and a rotor assembly. When the fan is powered, the stator assembly generates a magnetic field, which in turn causes the rotor assembly to rotate. This rotating rotor assembly provides power to the fan. However, because the stator core of the stator assembly is provided with multiple stator slots, which are evenly distributed within the stator assembly and have the same structure, the motor generates severe electromagnetic noise when the fan is running, which reduces 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] In view of this, the first aspect of the present invention provides a stator assembly, including a stator core, the stator core is provided with multiple first slot groups and multiple second slot groups, and the multiple first slot groups and the multiple second slot groups are arranged alternately along the circumference of the stator core; the first slot group includes multiple first stator slots; the second slot group includes multiple second stator slots; wherein, the slot area of ​​each first stator slot in the multiple first stator slots is a first area, and the slot area of ​​each second stator slot in the multiple second stator slots is a second area, and the first area is greater than the second area.

[0007] In this technical solution, the utility model defines a stator assembly, comprising a stator core, the stator core being provided with a plurality of first slot groups and a plurality of second slot groups, the plurality of first slot groups and the plurality of second slot groups being alternately arranged on the stator core. The first slot group is provided with a plurality of first stator slots, each having a first slot area. The second slot group is provided with a plurality of second stator slots, each having a second slot area. The slot area of ​​the first stator slots is greater than the slot area of ​​the second stator slots, the slot type of the first stator slots being large, and the slot type of the second stator slots being small. That is, the maximum inner slot diameter of the first stator slots is greater than the maximum inner slot diameter of the second stator slots, resulting in a different structure between the first and second stator slots. When the motor is operating in high-power and high-magnetic-flux conditions, the different structures of the first and second stator slots enable the magnetic field generated by the motor winding to approach a sinusoidal distribution, thereby significantly reducing motor noise. At the same time, under low-power and low-speed conditions, the different designs of the first stator slot structure and the second stator slot structure improve the shape of the magnetic field distribution, enhance the motor's low-end electromagnetic noise suppression capability, further reduce the motor noise, and thus enhance the user experience.

[0008] Furthermore, the first stator slot structure differs from the second stator slot structure, resulting in different motor magnetic field patterns and achieving different motor performance. Furthermore, the difference between the first and second stator slot structures makes the pitch and distribution of the windings more reasonable, resulting in a more sinusoidal magnetic field pattern and improved winding coefficient. The stator core of this solution not only meets the required motor magnetic field pattern, but also effectively balances the winding coefficient of the motor windings, allowing the motor material to operate at optimal conditions and ensuring material utilization. Specifically, for example, the stator core structure employs a four-pole slot structure with 20 slots of varying sizes. There are two types of stator slots: a small slot type with three slots in a group, and a large slot type with two slots in a group. The motor windings are divided into working windings and auxiliary windings. The working windings and auxiliary windings are embedded in different slot groups according to motor operation requirements. Different motor magnetic field patterns are generated depending on the slot group, thereby achieving different motor performance. This slot combination not only meets the motor's operating magnetic field requirements but also effectively balances the motor's winding coefficient. Under the same current and magnetic field conditions, the motor can generate a stronger magnetic field or induce a higher electromotive force, which, to a certain extent, reduces the winding current or number of turns, thereby reducing the amount of conductive material used and ensuring its utilization.

[0009] Specifically, the stator core structure of this solution is embedded in the second slot group in the working winding of the single-phase motor. The magnetic field generated by the working winding of the motor is close to a sinusoidal wave distribution, which will have a good improvement effect on the noise of the motor that requires high power and high magnetic flux state.

[0010] Specifically, the stator core structure of this solution is adopted, and the working winding of the single-phase motor is embedded in the first slot group. The working winding improves the winding coefficient and improves the motor material utilization rate. At the same time, the corresponding auxiliary winding is embedded in the second slot group. By improving the magnetic field distribution of the auxiliary winding, the motor's low-end electromagnetic noise suppression capability is improved. At the same time, due to the increase in the distributable slot area of ​​the winding, the speed regulation performance of the motor is enhanced.

[0011] Furthermore, the stator core structure of this solution allows the motor's performance output to be adjusted according to different operating requirements. For example, for equipment that requires frequent starting and stopping, a larger starting winding and a smaller running winding can be set to improve starting performance and reduce operating energy consumption.

[0012] Furthermore, the stator core structure of this solution places the motor's working winding and auxiliary winding in separate slots of different sizes, facilitating heat dissipation. The first stator slot provides better heat dissipation for the working winding, reducing the risk of motor failure due to overheating.

[0013] At the same time, the stator core structure of this solution can isolate the working winding and the auxiliary winding to a certain extent, reduce the electromagnetic interference between the two windings, and improve the operating stability and reliability of the motor.

[0014] Furthermore, the stator core structure of this solution allows for optimal performance by rationally adjusting parameters such as the number of turns and wire gauge of the working and auxiliary windings according to different motor specifications and performance requirements. This solution allows for customized designs for various motor types.

[0015] At the same time, with the stator core structure of this solution, when a motor fails, the design of the first slot group and the second slot group makes it easier for maintenance personnel to locate the problem and perform targeted maintenance.

[0016] At the same time, with the stator core structure of this solution, for stator cores of different shapes, such as round, square or irregular shapes, the design of the first stator slot and the second stator slot can better adapt to the shape of the stator core, thereby improving the utilization rate of the motor winding.

[0017] In addition, the stator assembly in the above technical solution provided by the present invention may also have the following additional technical features:

[0018] In some technical solutions of the present invention, optionally, the sum of the slot areas of the plurality of first stator slots is a third area; the sum of the slot areas of the plurality of second stator slots is a fourth area; and the fourth area is greater than the third area.

[0019] In this technical solution, the sum of the slot areas of the multiple first stator slots is a third area, and the sum of the slot areas of the multiple second stator slots is a fourth area, which is greater than the third area. Because the fourth area is greater than the third area, the embedding method of the motor's working windings and auxiliary windings can be customized based on the motor's operating scenario. The working windings and auxiliary windings are embedded in small or large slot groups, respectively. Different embedding methods result in motors with different electromagnetic technical performance, allowing the motor to be customized according to market demand and improving market competitiveness.

[0020] In some technical solutions of the present invention, optionally, the ratio of the fourth area to the third area is greater than or equal to 1.2 and less than or equal to 1.4.

[0021] In this technical solution, the solution limits the ratio of the fourth area to the third area to be greater than or equal to 1.2 and less than or equal to 1.4. By limiting the ratio of the fourth area to the third area, when the motor is running, the working winding and the auxiliary winding of the motor cooperate better, so that the motor is in the best working state. The motor performance takes into account the material utilization rate, motor speed ratio and high-quality resistance characteristics, and controls the electromagnetic noise of the motor, making the motor more popular in the market and improving the market competitiveness of the motor.

[0022] In some technical solutions of the present invention, optionally, the stator assembly further includes a working winding and an auxiliary winding. The working winding is embedded in the first stator slot, and the auxiliary winding is embedded in the second stator slot.

[0023] In this technical solution, the stator assembly also includes a working winding and an auxiliary winding. The working winding is embedded in the first stator slot, and the auxiliary winding is embedded in the second stator slot. Specifically, if the working winding is embedded in the large slot group, the motor performance tends to have a higher material utilization rate, and the motor speed ratio and low-speed characteristics are better. If the working winding of the motor is embedded in the large slot group, the working winding improves the winding coefficient and improves the material utilization rate of the motor. At the same time, the corresponding auxiliary winding is embedded in the small slot group. By improving the magnetic field distribution of the auxiliary winding, the motor's low-speed electromagnetic noise suppression capability is improved. At the same time, due to the increase in the distributable slot area of ​​the winding, the speed regulation performance of the motor is enhanced.

[0024] Furthermore, the working winding, nested in the first stator slot, provides ample space for more turns of wire, thereby enhancing magnetic field strength and improving motor efficiency. The auxiliary winding, nested in the second stator slot, precisely provides auxiliary power when needed without taking up excessive space and avoiding unnecessary energy loss.

[0025] The working winding, embedded in the first stator slot, generates stronger electromagnetic force during motor operation, providing greater torque output to meet the demands of high-load operating scenarios. The auxiliary winding, working in conjunction with the working winding, can further enhance torque in certain situations, resulting in superior motor performance during starting and acceleration.

[0026] At the same time, the working winding is embedded in the first stator slot, which provides better heat dissipation conditions for the working winding, reduces the risk of motor failure due to overheating, and improves the overall stability of the motor.

[0027] In some technical solutions of the present invention, optionally, the stator assembly further includes: a working winding and an auxiliary winding. The working winding is embedded in the second stator slot; the auxiliary winding is embedded in the first stator slot.

[0028] In this technical solution, the stator assembly's working winding can be embedded in the second stator slot, while the stator assembly's auxiliary winding is embedded in the first stator slot. Embedding the working winding in a small slot group improves motor performance and effectively suppresses electromagnetic noise under high-power and high-magnetic-flux conditions. Embedding the motor's working winding in a small slot group creates a magnetic field that approaches a sinusoidal distribution, significantly reducing noise in motors operating at high power and high magnetic-flux conditions.

[0029] The auxiliary winding, embedded in the first stator slot, generates a strong magnetic field, providing a high starting torque during motor startup, making it easier for the motor to overcome initial resistance and start. The working winding, embedded in the second stator slot, responds quickly, quickly entering a stable operating state after startup, improving the motor's starting efficiency.

[0030] Furthermore, regardless of whether the working winding is embedded in the first or second stator slot, or the auxiliary winding is embedded in the first or second stator slot, both embedding methods facilitate differentiation and handling during motor maintenance. When a fault occurs, the problem can be located more quickly, reducing motor maintenance costs and time.

[0031] In some technical solutions of the present invention, optionally, the first stator slot has a first slot opening, and the width of the first slot in the circumferential direction of the stator core is a first width; the second stator slot has a second slot opening, and the width of the second slot in the circumferential direction of the stator core is a second width; the first width is equal to the second width.

[0032] In this technical solution, a first notch is provided in the first stator slot, the first notch being located near the center of the stator core circle, and the opening width of the first notch being a first width. A second notch is provided in the second stator slot, the second notch being located near the center of the stator core circle, and the opening width of the second notch being a second width. The first width of the first notch is equal to the second width of the second notch. This consistent notch width makes the stator assembly production process more standardized and regularized, reducing manufacturing difficulty and cost. This also makes it easier for processing equipment to perform operations such as cutting and stamping, improving production efficiency.

[0033] At the same time, the winding and installation of the winding are more convenient, reducing the errors and difficulties caused by inconsistent slot sizes.

[0034] In some technical solutions of the present invention, optionally, the stator core includes: a yoke, a first stator tooth, and a second stator tooth. The yoke is arranged in an annular shape; the first stator tooth is connected to the yoke, located on the inner side of the yoke, and located between two adjacent first stator slots among the plurality of first stator slots, and the width of the first stator tooth in the circumferential direction of the stator core is a third width; the second stator tooth is connected to the yoke, located on the inner side of the yoke, and located between two adjacent second stator slots among the plurality of second stator slots, and the width of the second stator tooth in the circumferential direction of the stator core is a fourth width; the third width is smaller than the fourth width.

[0035] In this technical solution, the stator core includes: a yoke, a first stator tooth, and a second stator tooth. The yoke is arranged in a ring shape, which can effectively limit the radial and axial displacement of the rotor and ensure the stability of the rotor during high-speed rotation. The first stator tooth is located on the inner side of the yoke and is fixedly connected to the yoke. It is located between two adjacent first stator slots among the multiple first stator slots, and the width of the first stator tooth is the third width; the second stator tooth is located on the inner side of the yoke and is fixedly connected to the yoke. It is located between two adjacent second stator slots among the multiple second stator slots, and the width of the second stator tooth is the fourth width; the third width is smaller than the fourth width. By arranging the yoke, the first stator tooth, and the second stator tooth of the stator core, when the motor is running, the magnetic field is distributed more evenly around the rotor, which helps to reduce torque fluctuations and improve the movement accuracy and stability of the motor.

[0036] At the same time, the uniform magnetic field distribution is also beneficial to reducing the noise and vibration of the motor and extending the service life of the motor.

[0037] In some technical solutions of the present invention, the stator core optionally includes a third stator tooth. The third stator tooth is connected to the yoke, located inside the yoke, and between adjacent first and second stator teeth. The third stator tooth has a fifth width in the circumferential direction of the stator core; the fifth width is greater than the third width and less than the fourth width.

[0038] In this technical solution, the stator core also includes a third stator tooth. This third stator tooth is located inside the yoke, fixedly connected to the yoke, and positioned between the adjacent first and second stator teeth. The third stator tooth has a fifth width, which is greater than the third width and less than the fourth width. The arrangement of the stator core's yoke, first and second stator teeth ensures a more even distribution of the magnetic field around the rotor during motor operation, helping to reduce torque fluctuations and further improving the motor's motion accuracy and stability.

[0039] In some technical solutions of the present invention, optionally, the inner diameter of the stator core is greater than or equal to 40 mm and less than or equal to 50 mm.

[0040] In this technical solution, the inner diameter of the stator core is greater than or equal to 40 mm and less than or equal to 50 mm. The stator assembly of this solution is suitable for small household appliances or small devices, such as electric fans, hair dryers, robot vacuum cleaners, electric toy cars, and other small appliances or devices.

[0041] The second aspect of the present invention provides a motor comprising a stator assembly according to any one of the above technical solutions. Therefore, the motor has all the beneficial effects of the stator assembly according to any one of the above technical solutions.

[0042] In some technical solutions of the present invention, a fan motor core structure for a single-phase AC motor is specifically provided. The core structure employs a slot core structure with unequal teeth, wherein the number of teeth is generally an integer multiple of 4. This solution employs 20 slots, including 8 large slots in groups of two and 12 small slots in groups of three. The large and small slots are adjacent to each other in groups. The ratio of the total area of ​​the three small slots to the total area of ​​the two large slots is between 1.2 and 1.4. The core slot openings are of the same size, and the tooth width between slots is determined according to the slot size requirements and can be unequal. Generally, the working winding and auxiliary winding of a single-phase motor are embedded in either the small slot group or the large slot group, depending on the motor's usage, to form motors with different electromagnetic technical performances: when the working winding is embedded in the large slot group, the motor performance tends to have higher material utilization, better motor speed regulation ratio, and low-speed characteristics; when the working winding is embedded in the small slot group, the motor performance can better suppress the motor's electromagnetic noise under high power and high magnetic flux conditions.

[0043] 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

[0044] 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:

[0045] Figure 1 One of the schematic diagrams of a stator assembly according to an embodiment of the present invention is shown;

[0046] Figure 2 FIG2 shows a second schematic diagram of a stator assembly according to an embodiment of the present invention;

[0047] Figure 3 FIG3 shows a third schematic diagram of a stator assembly according to an embodiment of the present invention.

[0048] in, Figures 1 to 3 The corresponding relationship between the reference numerals and component names is as follows:

[0049] 100 stator assembly, 200 stator core, 202 yoke, 204 first stator tooth, 208 second stator tooth, 212 third stator tooth, 220 first slot group, 222 first stator slot, 228 first slot, 240 second slot group, 242 second stator slot, 248 second slot, 300 working winding, 400 auxiliary winding. DETAILED DESCRIPTION

[0050] 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.

[0051] 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.

[0052] Refer to the following Figures 1 to 3 A stator assembly 100 and an electric machine according to some embodiments of the present invention are described.

[0053] In one embodiment of the present invention, a stator assembly 100 is provided, such as Figure 1 As shown, the stator assembly 100 includes a stator core 200, and the stator core 200 is provided with a plurality of first slot groups 220 and a plurality of second slot groups 240. The plurality of first slot groups 220 and the plurality of second slot groups 240 are arranged along the circumference of the stator core 200 (e.g., Figure 1 The first slot group 220 includes a plurality of first stator slots 222; the second slot group 240 includes a plurality of second stator slots 242; wherein the slot area of ​​each of the plurality of first stator slots 222 is the first area (such as Figure 1The area indicated by the arrow S1), the slot area of ​​each second stator slot 242 in the plurality of second stator slots 242 is the second area (as shown in FIG. Figure 1 The first area is larger than the second area.

[0054] In this embodiment, the present invention defines a stator assembly 100, which includes a stator core 200. The stator core 200 is provided with a plurality of first slot groups 220 and a plurality of second slot groups 240. The plurality of first slot groups 220 and the plurality of second slot groups 240 are alternately arranged on the stator core 200. The first slot group 220 is provided with a plurality of first stator slots 222, each of which has a first area. The second slot group 240 is provided with a plurality of second stator slots 242, each of which has a second area. The slot area of ​​the first stator slot 222 is larger than the slot area of ​​the second stator slot 242. The slot type of the first stator slot 222 is a large slot type, and the slot type of the second stator slot 242 is a small slot type. That is, the maximum slot diameter of the first stator slot 222 is larger than the maximum slot diameter of the second stator slot 242, making the structure of the first stator slot 222 different from the structure of the second stator slot 242. When the motor is in a high-power and high-magnetic-flux operating state, the difference between the first stator slot 222 and the second stator slot 242 makes the magnetic field generated by the motor windings approach a sine wave distribution, thereby significantly improving the motor noise. At the same time, in a low-power and low-speed state, the different design of the first stator slot 222 and the second stator slot 242 improves the shape of the magnetic field distribution, enhances the motor's low-end electromagnetic noise suppression capability, further reduces the motor noise, and thus improves the user experience.

[0055] Furthermore, the structure of the first stator slot 222 is different from that of the second stator slot 242, so that the motor generates different motor magnetic field forms, thereby achieving different motor operating performance. At the same time, the structure of the first stator slot 222 is different from that of the second stator slot 242, so that the pitch and distribution of the winding are more reasonable, and the magnetic field form generated by the motor winding is closer to a sine wave, thereby improving the winding coefficient. The stator core 200 of this solution can not only meet the magnetic field form required for motor operation, but also better take into account the winding coefficient of the motor winding, so that the motor material works in the best state, thereby ensuring the utilization rate of the motor material. Specifically, for example, the stator core 200 structure adopts a four-pole slot structure with 20 slots of unequal sizes. There are two types of stator slots: a small slot type with three slots in a group, and a large slot type with two slots in a group. The motor windings are divided into working windings 300 and auxiliary windings 400. The working windings 300 and auxiliary windings 400 are embedded in different slot groups according to the needs of motor operation. Different motor magnetic field forms are generated according to the different slot groups in which they are embedded, thereby achieving different motor operating performance. The slot number combination structure of this solution can not only meet the magnetic field form required for motor operation, but also better take into account the winding coefficient of the motor winding. Under the same current and magnetic field conditions, the motor can generate a stronger magnetic field or induce a higher electromotive force, which can reduce the current or number of turns of the winding to a certain extent, thereby reducing the amount of conductive material used and ensuring the utilization rate of the conductive material.

[0056] Specifically, by adopting the stator core 200 structure of the present invention, the working winding 300 of the single-phase motor is embedded in the second slot group 240, and the magnetic field generated by the working winding 300 of the motor approaches a sinusoidal wave distribution, which can greatly improve the noise of the motor that requires high power and high magnetic flux state.

[0057] Specifically, the stator core 200 structure of the present solution is adopted, and the working winding 300 of the single-phase motor is embedded in the first slot group 220. The working winding 300 improves the winding coefficient and improves the material utilization rate of the motor. At the same time, the corresponding auxiliary winding 400 is embedded in the second slot group 240. By improving the magnetic field distribution of the auxiliary winding 400, the low-end electromagnetic noise suppression capability of the motor is improved. At the same time, due to the increase in the distributable slot area of ​​the winding, the speed regulation performance of the motor is enhanced.

[0058] Furthermore, the stator core 200 structure of this solution can adjust the motor's performance output according to different operating requirements. For example, for equipment that requires frequent starting and stopping, a larger starting winding and a smaller running winding can be provided to improve starting performance and reduce operating energy consumption.

[0059] Furthermore, the stator core 200 structure of this embodiment allows the motor's working winding 300 and auxiliary winding 400 to be placed in electronic slots of different sizes, facilitating heat dissipation. The first stator slot 222 provides improved heat dissipation for the working winding 300, reducing the risk of motor failure due to overheating.

[0060] At the same time, the stator core 200 structure of this solution can isolate the working winding 300 and the auxiliary winding 400 to a certain extent, reduce the electromagnetic interference between the two windings, and improve the operating stability and reliability of the motor.

[0061] Furthermore, the stator core 200 structure of this solution allows for optimal performance by adjusting parameters such as the number of turns and wire gauge of the working winding 300 and auxiliary winding 400 according to different motor specifications and performance requirements. This solution allows for customized designs for various motor types.

[0062] At the same time, with the stator core 200 structure of this solution, when a motor fails, the design of the first slot group 220 and the second slot group 240 can make it easier for maintenance personnel to locate the problem and perform targeted maintenance.

[0063] At the same time, by adopting the stator core 200 structure of the present invention, for stator cores 200 of different shapes, such as round, square or irregular shapes, the design of the first stator slot 222 and the second stator slot 242 can better adapt to the shape of the stator core 200, thereby improving the utilization rate of the motor winding.

[0064] In one embodiment of the present invention, optionally, as Figure 1 As shown, the sum of the slot areas of the plurality of first stator slots 222 is the third area (eg Figure 1 The sum of the slot areas of the plurality of second stator slots 242 is the fourth area (as shown in S3); Figure 1 The fourth area is larger than the third area.

[0065] In this embodiment, the sum of the slot areas of the plurality of first stator slots 222 constitutes a third area, and the sum of the slot areas of the plurality of second stator slots 242 constitutes a fourth area, which is greater than the third area. Because the fourth area is greater than the third area, the embedding method of the motor's working winding 300 and auxiliary winding 400 can be customized based on the motor's operating scenario. The working winding 300 and auxiliary winding 400 can be embedded in either a small slot group or a large slot group, respectively. Different embedding methods result in motors with varying electromagnetic performance. This allows the motor to be customized based on market demand, improving market competitiveness.

[0066] In one embodiment of the present invention, optionally, as Figure 1As shown, the ratio of the fourth area to the third area is greater than or equal to 1.2 and less than or equal to 1.4.

[0067] In this embodiment, this solution limits the ratio of the fourth area to the third area to be greater than or equal to 1.2 and less than or equal to 1.4. By limiting the ratio of the fourth area to the third area, when the motor is running, the working winding 300 and the auxiliary winding 400 of the motor cooperate better, so that the motor is in the best working state. The motor performance takes into account the material utilization rate, motor speed ratio and high-quality resistance characteristics, and controls the electromagnetic noise of the motor, making the motor more popular in the market and improving the market competitiveness of the motor.

[0068] In one embodiment of the present invention, optionally, as Figure 2 As shown, the stator assembly 100 further includes a working winding 300 and an auxiliary winding 400. The working winding 300 is embedded in the first stator slot 222; the auxiliary winding 400 is embedded in the second stator slot 242.

[0069] In this embodiment, the stator assembly 100 further includes a working winding 300 and an auxiliary winding 400. The working winding 300 is embedded in the first stator slot 222, and the auxiliary winding 400 is embedded in the second stator slot 242. Specifically, when the working winding 300 is embedded in the large slot group, the motor performance tends to have a higher material utilization rate, and the motor speed ratio and low-speed characteristics are better. If the working winding 300 of the motor is embedded in the large slot group, the working winding 300 improves the winding coefficient and improves the motor material utilization rate. At the same time, the corresponding auxiliary winding 400 is embedded in the small slot group. By improving the magnetic field distribution of the auxiliary winding 400, the motor's low-speed electromagnetic noise suppression capability is improved. At the same time, due to the increase in the slot area where the winding can be distributed, the motor's speed regulation performance is enhanced.

[0070] Furthermore, the working winding 300 embedded in the first stator slot 222 provides ample space for more turns of wire, thereby enhancing the magnetic field strength and improving the motor's operating efficiency. The auxiliary winding 400, embedded in the second stator slot 242, precisely provides auxiliary power when needed without excessive space consumption, thus avoiding unnecessary energy loss.

[0071] The working winding 300, embedded in the first stator slot 222, generates a stronger electromagnetic force during motor operation, providing greater torque output to meet the demands of high-load operating scenarios. The auxiliary winding 400, working in conjunction with the working winding 300, can further enhance torque in certain situations, resulting in superior motor performance during startup and acceleration.

[0072] At the same time, the working winding 300 is embedded in the first stator slot 222, which provides better heat dissipation conditions for the working winding 300, reduces the risk of motor failure due to overheating, and improves the overall stability of the motor.

[0073] In one embodiment of the present invention, optionally, as Figure 3 As shown, the stator assembly 100 further includes a working winding 300 and an auxiliary winding 400. The working winding 300 is embedded in the second stator slot 242; the auxiliary winding 400 is embedded in the first stator slot 222.

[0074] In this embodiment, the working winding 300 of the stator assembly 100 can also be embedded in the second stator slot 242, while the auxiliary winding 400 of the stator assembly 100 can be embedded in the first stator slot 222. Embedding the working winding 300 in a small slot group improves motor performance and effectively suppresses electromagnetic noise under high-power and high-magnetic-flux conditions. Embedding the working winding 300 in a small slot group creates a magnetic field that approaches a sinusoidal distribution, significantly reducing noise in motors operating at high power and high magnetic-flux conditions.

[0075] Furthermore, the auxiliary winding 400 embedded in the first stator slot 222 generates a strong magnetic field, providing a high starting torque during motor startup, making it easier for the motor to overcome initial resistance and start. The working winding 300 embedded in the second stator slot 242 provides a fast response, quickly entering a stable operating state after startup, and improving the motor's starting efficiency.

[0076] Furthermore, regardless of whether the working winding 300 is embedded in the first stator slot 222 or the second stator slot 242, and the auxiliary winding 400 is embedded in the first stator slot 222 or the second stator slot 242, both embedding methods facilitate differentiation and handling during motor maintenance. When a fault occurs, the problem can be located more quickly, reducing motor maintenance costs and time.

[0077] In one embodiment of the present invention, optionally, as Figure 1 As shown, the first stator slot 222 has a first slot opening 228, and the width of the first slot opening 228 in the circumferential direction of the stator core 200 is a first width (eg, Figure 1 The second stator slot 242 has a second slot 248, and the width of the second slot 248 in the circumferential direction of the stator core 200 is a second width (such as Figure 1 width indicated by arrow W2); the first width is equal to the second width.

[0078] In this embodiment, a first notch 228 is provided on the first stator slot 222. The first notch 228 is located near the center of the stator core 200, and the opening width of the first notch 228 is a first width. A second notch 248 is provided on the second stator slot 242. The second notch 248 is located near the center of the stator core 200, and the opening width of the second notch 248 is a second width. The first width of the first notch 228 is equal to the second width of the second notch 248. The consistent notch width makes the stator assembly 100 more standardized and regularized during the production process, reducing manufacturing difficulty and cost. Processing equipment can more easily perform operations such as cutting and stamping, thereby improving production efficiency.

[0079] At the same time, the winding and installation of the winding are more convenient, reducing the errors and difficulties caused by inconsistent slot sizes.

[0080] In one embodiment of the present invention, optionally, as Figure 1 As shown, the stator core 200 includes: a yoke 202, a first stator tooth 204, and a second stator tooth 208. The yoke 202 is arranged in an annular shape; the first stator tooth 204 is connected to the yoke 202, is located on the inner side of the yoke 202, and is located between two adjacent first stator slots 222 among the plurality of first stator slots 222. The width of the first stator tooth 204 in the circumferential direction of the stator core 200 is a third width (as shown in FIG. Figure 1 The second stator tooth 208 is connected to the yoke 202, is located on the inner side of the yoke 202, and is located between two adjacent second stator slots 242 in the plurality of second stator slots 242. The width of the second stator tooth 208 in the circumferential direction of the stator core 200 is the fourth width (as shown in FIG. Figure 1 width indicated by arrow W4); the third width is smaller than the fourth width.

[0081] In this embodiment, the stator core 200 includes a yoke 202, a first stator tooth 204, and a second stator tooth 208. The yoke 202 is arranged in an annular shape, which can effectively limit the radial and axial displacement of the rotor and ensure the stability of the rotor during high-speed rotation. The first stator tooth 204 is located on the inner side of the yoke 202 and is fixedly connected to the yoke 202. It is located between two adjacent first stator slots 222 among the plurality of first stator slots 222. The width of the first stator tooth 204 is the third width. The second stator tooth 208 is located on the inner side of the yoke 202 and is fixedly connected to the yoke 202. It is located between two adjacent second stator slots 242 among the plurality of second stator slots 242. The width of the second stator tooth 208 is the fourth width. The third width is less than the fourth width. By configuring the yoke 202 , the first stator teeth 204 and the second stator teeth 208 of the stator core 200 , the magnetic field is more evenly distributed around the rotor when the motor is running, which helps to reduce torque fluctuations and improve the movement accuracy and stability of the motor.

[0082] At the same time, the uniform magnetic field distribution is also beneficial to reducing the noise and vibration of the motor and extending the service life of the motor.

[0083] In one embodiment of the present invention, optionally, as Figure 1 As shown, the stator core 200 includes a third stator tooth 212. The third stator tooth 212 is connected to the yoke 202, is located on the inner side of the yoke 202, and is located between the adjacent first stator tooth 204 and the second stator tooth 208. The width of the third stator tooth 212 in the circumferential direction of the stator core 200 is the fifth width (as shown in FIG. Figure 1 width indicated by arrow W5); the fifth width is greater than the third width and smaller than the fourth width.

[0084] In this embodiment, the stator core 200 further includes a third stator tooth 212. The third stator tooth 212 is located inside the yoke 202 and is fixedly connected to the yoke 202. It is located between the adjacent first stator tooth 204 and second stator tooth 208. The width of the third stator tooth 212 is the fifth width, which is greater than the third width and less than the fourth width. The arrangement of the yoke 202, first stator tooth 204, and second stator tooth 208 of the stator core 200 makes the magnetic field more evenly distributed around the rotor during motor operation, helping to reduce torque fluctuations and further improving the motor's motion accuracy and stability.

[0085] In one embodiment of the present invention, optionally, the inner diameter of the stator core 200 is greater than or equal to 40 mm and less than or equal to 50 mm.

[0086] In this embodiment, the inner diameter of the stator core 200 is greater than or equal to 40 mm and less than or equal to 50 mm. The stator assembly 100 of this solution is suitable for small household appliances or small devices, such as electric fans, hair dryers, robot vacuum cleaners, electric toy cars, and other small appliances or devices.

[0087] In one embodiment of the present invention, a motor is provided, comprising a stator assembly 100 according to any one of the above technical solutions. Therefore, the motor has all the beneficial effects of the stator assembly 100 according to any one of the above technical solutions.

[0088] In one embodiment of the present invention, Figure 1 、 Figure 2 and Figure 3A single-phase AC fan motor core structure is shown. This structure utilizes an iron core with slots of varying sizes. The number of large and small slots is generally an integer multiple of four. This embodiment employs 20 slots, with eight large slots arranged in groups of two and twelve small slots arranged in groups of three. The large and small slots are adjacent to each other in groups. The ratio of the total area of ​​the three small slots to the total area of ​​the two large slots is between 1.2 and 1.4. The core slot openings are of uniform size, and the tooth width between slots is determined by the slot size requirements and can vary. In a typical single-phase motor, the working winding 300 and auxiliary winding 400 are embedded in either the small or large slot groups, depending on the motor's intended use. This results in motors with different electromagnetic performance characteristics: When the working winding 300 is embedded in the large slot group, the motor performance tends to be higher in material utilization, with better speed regulation ratio and low-speed characteristics. When the working winding 300 is embedded in the small slot group, the motor performance is better at suppressing electromagnetic noise under high power and high magnetic flux conditions.

[0089] 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.

[0090] 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.

[0091] 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, wherein the stator core is provided with a plurality of first slot groups and a plurality of second slot groups, wherein the plurality of first slot groups and the plurality of second slot groups are alternately arranged along a circumferential direction of the stator core; The first slot group includes a plurality of first stator slots; The second slot group includes a plurality of second stator slots; The slot area of ​​each of the plurality of first stator slots is a first area, the slot area of ​​each of the plurality of second stator slots is a second area, and the first area is greater than the second area.

2. The stator assembly according to claim 1, characterized in that The sum of slot areas of the plurality of first stator slots is a third area; The sum of slot areas of the plurality of second stator slots is a fourth area; The fourth area is larger than the third area.

3. The stator assembly according to claim 2, characterized in that A ratio of the fourth area to the third area is greater than or equal to 1.2 and less than or equal to 1.

4.

4. The stator assembly according to claim 1, wherein: Also includes: a working winding, wherein the working winding is embedded in the first stator slot; An auxiliary winding is embedded in the second stator slot.

5. The stator assembly according to claim 1, characterized in that Also includes: a working winding, wherein the working winding is embedded in the second stator slot; An auxiliary winding is embedded in the first stator slot.

6. The stator assembly according to claim 1, wherein: The first stator slot has a first slot opening, and the width of the first slot opening in the circumferential direction of the stator core is a first width; The second stator slot has a second slot opening, and the width of the second slot opening in the circumferential direction of the stator core is a second width; The first width is equal to the second width.

7. The stator assembly according to claim 1, characterized in that The stator core comprises: a yoke, wherein the yoke is arranged in a ring shape; a first stator tooth connected to the yoke, located on an inner side of the yoke, and located between two adjacent first stator slots among the plurality of first stator slots, wherein a width of the first stator tooth in a circumferential direction of the stator core is a third width; a second stator tooth connected to the yoke, located on an inner side of the yoke, and located between two adjacent second stator slots among the plurality of second stator slots, wherein the width of the second stator tooth in the circumferential direction of the stator core is a fourth width; The third width is smaller than the fourth width.

8. The stator assembly according to claim 7, characterized in that The stator core comprises: a third stator tooth connected to the yoke, located on an inner side of the yoke, and between adjacent first and second stator teeth, wherein a width of the third stator tooth in a circumferential direction of the stator core is a fifth width; The fifth width is greater than the third width and less than the fourth width.

9. The stator assembly according to any one of claims 1 to 8, characterized in that: The inner diameter of the stator core is greater than or equal to 40 mm and less than or equal to 50 mm.

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

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