Stator core and electric machine

Abstract

The utility model relates to a kind of stator core and motor, wherein the stator core includes core main body, the core main body includes multiple silicon steel sheets, multiple stator slots are uniformly distributed in the inner circumference of core main body, the stator slot is rectangular, multiple positioning grooves are equipped on the outer circumference of silicon steel sheet.The utility model has the beneficial effects of simple structure, positioning when stacking is convenient, and guarantee the overall dimensional accuracy of core main body.

Description

Technical Field

[0001] This utility model relates to the field of aluminum profile installation technology, specifically to a stator core and motor. Background Technology

[0002] In existing technologies, stator cores are typically constructed by stacking multiple stamped silicon steel sheets, with winding spaces formed by punching stator slots into the silicon steel sheets. However, this traditional structure has several technical limitations: First, while common semi-closed slot or irregularly shaped slot designs can meet electromagnetic performance requirements, the complex slot structure leads to high manufacturing difficulty and cost of the stamping dies; second, during the stacking process, the lack of an effective positioning reference makes it easy for the silicon steel sheets to misalign, affecting the straightness and dimensional accuracy of the stator slots. The cumulative error during the stacking process can cause the overall dimensions of the core to exceed tolerances, affecting the assembly accuracy with the motor housing. Utility Model Content

[0003] The purpose of this utility model is to provide a stator core and motor with a simple structure, convenient positioning during stacking, and guaranteed overall dimensional accuracy of the core body.

[0004] A stator core includes a core body comprising multiple layers of silicon steel sheets. Multiple stator slots are evenly distributed on the inner circumference of the core body. The stator slots are rectangular. Multiple positioning slots are provided on the outer circumference of the silicon steel sheets.

[0005] In the above scheme, the iron core body is formed by stacking multiple layers of silicon steel sheets. The rectangular stator slots are evenly distributed in the inner circumference of the iron core body. The structure is simple and easy to process. The positioning slots set on the outer circumference of the silicon steel sheets provide a reliable positioning reference during the stacking process, ensuring that each layer of silicon steel sheets can be accurately aligned, effectively guaranteeing the overall dimensional accuracy and structural consistency of the iron core.

[0006] Furthermore, the stator slot is provided with a groove.

[0007] In the above design, the slot design provides a convenient guide structure for winding installation, making the winding process smoother and more efficient, significantly reducing the difficulty of manual operation, and playing a key role in fixing the winding, preventing winding displacement caused by vibration during operation, and ensuring long-term reliability. In addition, it also optimizes the magnetic field distribution characteristics, effectively improving the electromagnetic performance of the motor, making operation more stable and reliable.

[0008] Furthermore, the slot width (W1) and the stator slot width (W2) satisfy: 1.2≤W2 / W1≤1.8.

[0009] In the above scheme, by controlling the ratio of slot width to stator slot width within a reasonable range, the best balance between electromagnetic performance and structural strength is achieved. This ratio ensures sufficient slot opening for winding installation and sufficient mechanical strength of the stator teeth. The optimized slot ratio effectively improves the magnetic field distribution characteristics, makes the magnetic circuit more reasonable, and significantly improves the energy conversion efficiency of the motor.

[0010] Furthermore, the positioning groove is rectangular.

[0011] In the above scheme, the geometric features of the rectangle give the positioning groove a clear guiding function, ensuring that each layer of silicon steel sheet can be quickly and accurately positioned and aligned during the stacking process. This simple and regular groove structure not only facilitates processing and manufacturing and reduces mold complexity, but also improves the stability and repeatability of positioning.

[0012] Furthermore, the thickness of the silicon steel sheet is 0.2-0.5 mm.

[0013] In the above scheme, the selection of silicon steel sheets with a thickness of 0.2-0.5mm achieves a good balance between electromagnetic performance and mechanical strength in the stator core, ensuring effective magnetic circuit conduction while maintaining sufficient structural rigidity. Silicon steel sheets of this thickness can form a tight bond during the stacking process, ensuring the overall structural stability of the stator core and helping to control eddy current losses.

[0014] Furthermore, an insulating coating is provided between adjacent silicon steel sheets.

[0015] In the above scheme, the insulating coating can block the eddy current path between silicon steel sheets, significantly reduce the eddy current loss in the stator core, and significantly improve the working efficiency of the motor. The presence of the insulating coating also enhances the electrical insulation performance between silicon steel sheets, prevents abnormal heating caused by local short circuits, and improves the stability of the stator core in long-term operation.

[0016] An electric motor comprising a stator core as described in any of the above embodiments.

[0017] This utility model discloses a stator core and motor, which has the advantages of simple structure, convenient positioning during stacking, and ensuring the overall dimensional accuracy of the core body. The core body is formed by stacking multiple layers of silicon steel sheets, and uniformly distributed rectangular stator slots are formed within the inner circumference of the core body. The structure is simple and easy to process. The positioning slots set on the outer circumference of the silicon steel sheets provide a reliable positioning reference during the stacking process, ensuring that each layer of silicon steel sheets can be accurately aligned, effectively guaranteeing the overall dimensional accuracy and structural consistency of the core. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a stator core structure according to one embodiment.

[0019] Figure 2 for Figure 1 A magnified view of a portion of the image.

[0020] The reference numerals in the attached diagram are as follows: 1. Silicon steel sheet; 2. Stator slot; 21. Slot opening; 3. Positioning slot. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0022] like Figure 1 and Figure 2 As shown in a preferred embodiment, the present invention provides a stator core comprising a core body, the core body comprising multiple layers of silicon steel sheets 1, and multiple stator slots 2 uniformly distributed on the inner circumference of the core body. The stator slots 2 are rectangular, and multiple positioning slots 3 are provided on the outer circumference of the silicon steel sheets 1. The core body is formed by stacking multiple layers of silicon steel sheets 1, forming uniformly distributed rectangular stator slots 2 on the inner circumference of the core body. The structure is simple and easy to process. The positioning slots 3 on the outer circumference of the silicon steel sheets 1 provide a reliable positioning reference during the stacking process, ensuring that each layer of silicon steel sheets 1 can be accurately aligned, effectively guaranteeing the overall dimensional accuracy and structural consistency of the core.

[0023] like Figure 1 and Figure 2 As shown, in some embodiments, the stator slot 2 is provided with a slot 21. The design of the slot 21 provides a convenient guide structure for winding installation, making the winding process smoother and more efficient, greatly reducing the difficulty of manual operation, and playing a key role in fixing the winding, preventing winding displacement caused by vibration during operation, and ensuring long-term reliability. In addition, it also optimizes the magnetic field distribution characteristics, effectively improving the electromagnetic performance of the motor, making the operation more stable and reliable.

[0024] like Figure 1 and Figure 2 As shown, in some embodiments, the width of slot 21 (W1) and the width of stator slot 2 (W2) satisfy: 1.2 ≤ W2 / W1 ≤ 1.8. By controlling the ratio of the width of slot 21 to the width of stator slot 2 within a reasonable range, the optimal balance between electromagnetic performance and structural strength is achieved. This ratio ensures sufficient slot 21 opening for winding installation while also ensuring sufficient mechanical strength of the stator teeth. The optimized slot 21 ratio effectively improves the magnetic field distribution characteristics, makes the magnetic circuit more rational, and significantly improves the energy conversion efficiency of the motor.

[0025] like Figure 1 and Figure 2As shown, in some embodiments, the positioning groove 3 is rectangular. The rectangular geometry gives the positioning groove 3 a clear guiding function, ensuring that each layer of silicon steel sheet 1 can be quickly and accurately positioned and aligned during the stacking process. This simple and regular groove structure not only facilitates processing and manufacturing and reduces mold complexity, but also improves the stability and repeatability of positioning.

[0026] like Figure 1 and Figure 2 As shown, in some embodiments, the thickness of the silicon steel sheet 1 is 0.2-0.5 mm. The selection of silicon steel sheet 1 with a thickness of 0.2-0.5 mm achieves a good balance between electromagnetic performance and mechanical strength in the stator core, ensuring effective magnetic circuit conduction while maintaining sufficient structural rigidity. This thickness of silicon steel sheet 1 can form a tight bond during the stacking process, ensuring the overall structural stability of the stator core, and at the same time, it is beneficial to control eddy current losses.

[0027] like Figure 1 and Figure 2 As shown, in some embodiments, an insulating coating is provided between adjacent silicon steel sheets 1. The insulating coating can block the eddy current path between silicon steel sheets 1, significantly reduce eddy current losses in the stator core, and significantly improve the motor's operating efficiency. The presence of the insulating coating also enhances the electrical insulation performance between silicon steel sheets 1, prevents abnormal heating caused by local short circuits, and improves the stability of the stator core during long-term operation.

[0028] This utility model discloses a stator core and motor working principle and process. When stacking silicon steel sheets 1, it is necessary to align the positioning grooves 3. The positioning grooves 3 provide a reliable positioning reference during the stacking process, ensuring that each layer of silicon steel sheets 1 can be accurately aligned, effectively guaranteeing the overall dimensional accuracy and structural consistency of the core.

[0029] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A stator core, characterized in that, The system includes a core body comprising multiple layers of silicon steel sheets. Multiple stator slots are evenly distributed around the inner circumference of the core body. The stator slots are rectangular. Multiple positioning slots are provided on the outer circumference of the silicon steel sheets. The stator slots are provided with openings. The width of the opening (W1) and the width of the stator slot (W2) satisfy: 1.2≤W2 / W1≤1.

8.

2. The stator core according to claim 1, characterized in that, The positioning groove is rectangular.

3. The stator core according to claim 1, characterized in that, The thickness of the silicon steel sheet is 0.2-0.5 mm.

4. The stator core according to claim 1, characterized in that, An insulating coating is provided between adjacent silicon steel sheets.

5. An electric motor, characterized in that, Includes the stator core as described in any one of claims 1-4.

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