Modular stator core and electric machine
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- UNITED AUTOMOTIVE ELECTRONICS SYST
- Filing Date
- 2025-07-21
- Publication Date
- 2026-08-07
AI Technical Summary
[0003]然而，非晶合金的薄、脆、硬等特征，导致其加工性极差，无法进行较大面积的复杂片体的冲压或切割，也无法很好地适用在过盈配合和冲击等工况下
[0018]本申请提供一种组合式定子铁芯及电机，该定子铁芯在硅钢的安装槽内嵌入非晶合金，并通过压力加工的方式将硅钢与非晶合金进行固定。通过在硅钢的内部布置一定体积的非晶合金，可将非晶合金的高强度、高硬度和硅钢良好的塑形和冲击韧性相结合，有效避免了非晶合金的薄、硬、脆的缺点，提升了定子铁芯结构的稳定性和可靠性，可实现以最小的非晶使用量和最小的投入成本最大限度地提升电机效率。
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Figure CN224610569U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor processing technology, and in particular to a combined stator core and motor. Background Technology
[0002] The common process for preparing amorphous alloys involves rapidly cooling the molten metal, preventing the atoms from diffusing and reorienting in time. This results in the cooled alloy retaining the disordered distribution of liquid atoms, hence the name "liquid metal." Currently, amorphous alloys are mainly used in power distribution transformers. Due to their advantages such as low coercivity, high permeability, and high resistivity, amorphous alloys have attracted particular attention in the new energy vehicle industry. They are especially suitable as core materials for motors, replacing traditional non-oriented silicon steel, effectively reducing losses and thus improving motor efficiency.
[0003] However, the thinness, brittleness, and hardness of amorphous alloys result in extremely poor machinability, making them unsuitable for stamping or cutting large, complex sheets, and also limiting their application in interference fits and impact conditions. Furthermore, the preparation and processing costs of amorphous alloy materials are very high, requiring strict control of the scrap ratio during amorphous core production. All of these factors restrict their application in the cores of new energy vehicle motors.
[0004] Therefore, for those skilled in the art, how to design a motor core that can reduce the processing difficulty of amorphous alloys is a technical problem that urgently needs to be solved. Utility Model Content
[0005] To address the problems existing in the prior art, this invention provides a combined stator core and motor. The stator core has an amorphous alloy embedded in silicon steel, and the silicon steel and amorphous alloy are fixed by pressure processing, which can improve the stability and reliability of the stator core structure and significantly improve the motor efficiency.
[0006] To achieve the above objectives, this utility model provides a combined stator core, comprising silicon steel and amorphous alloy. The silicon steel is provided with multiple axially penetrating mounting slots, all of which are spaced apart in the circumferential direction of the silicon steel. The number of amorphous alloys matches the number of mounting slots, with each amorphous alloy placed in a corresponding mounting slot. The silicon steel and the amorphous alloys are fixedly connected by pressure processing.
[0007] Optionally, the silicon steel and the amorphous alloy are fixedly connected by riveting, and the shape of the amorphous alloy matches the shape of the mounting groove.
[0008] Optionally, the silicon steel is provided with at least one rivet point on the entire circumference of each amorphous alloy. By applying pressure to the rivet point, the silicon steel can be deformed so that the silicon steel and the amorphous alloy are fixedly connected.
[0009] Optionally, all the riveting points corresponding to each of the amorphous alloys are symmetrically arranged in the circumferential direction of the mounting groove.
[0010] Optionally, the amorphous alloy has a polygonal structure, and the silicon steel has at least one riveting point on each edge of the amorphous alloy.
[0011] Alternatively, the amorphous alloy may be a circular structure, an elliptical structure, a fan-shaped structure, or other irregular structure with at least some of its edges being arc-shaped.
[0012] Optionally, the amorphous alloy is triangular in shape, and the silicon steel has a riveting point on each of the three edges near the amorphous alloy.
[0013] Alternatively, the amorphous alloy may be quadrilateral in shape, and the silicon steel may have a rivet point on each of the four edges near the amorphous alloy.
[0014] Optionally, the amorphous alloy is in the shape of a triangle or a trapezoid, with the triangular and trapezoidal amorphous alloys spaced apart circumferentially on the silicon steel; a rivet point is provided on each edge of the silicon steel near the amorphous alloy.
[0015] Optionally, the amorphous alloy is formed by stacking thin sheet structures, and the height of the amorphous alloy matches the height of the mounting groove in the axial direction of the silicon steel.
[0016] Optionally, all of the amorphous alloys are arranged symmetrically in the circumferential direction of the silicon steel.
[0017] To achieve the above objectives, this utility model also provides an electric motor, including any of the combined stator cores described in the present invention.
[0018] This application provides a combined stator core and motor. The stator core incorporates an amorphous alloy within a mounting slot in silicon steel, and the silicon steel and amorphous alloy are fixed together by pressure processing. By arranging a certain volume of amorphous alloy within the silicon steel, the high strength and hardness of the amorphous alloy are combined with the good plasticity and impact toughness of silicon steel. This effectively avoids the shortcomings of amorphous alloys, such as being thin, hard, and brittle, thus improving the stability and reliability of the stator core structure. It maximizes motor efficiency with minimal amorphous alloy usage and minimal investment cost.
[0019] Meanwhile, the amorphous alloy fixing process in the stator core is simple, which can simplify the processing technology of amorphous alloy, reduce the processing difficulty of amorphous alloy, and improve production feasibility. In addition, the investment in processing equipment is low and does not increase investment costs, resulting in high economic benefits. Attached Figure Description
[0020] Figure 1 This is a partial structural diagram of the stator core in a preferred embodiment of the present invention;
[0021] Figure 2 This is a schematic diagram of the structure of the silicon steel and amorphous alloy riveting points in a preferred embodiment of the present invention;
[0022] Figure 3a This is a schematic diagram of the structure of the riveting point of silicon steel and amorphous alloy in another preferred embodiment of the present invention, wherein there is one riveting point;
[0023] Figure 3b This is a schematic diagram of the structure of the riveting points of silicon steel and amorphous alloy in another preferred embodiment of the present invention, wherein there are two riveting points;
[0024] Figure 3c This is a schematic diagram of the structure of the riveting points of silicon steel and amorphous alloy in another preferred embodiment of the present invention, wherein there are 3 riveting points.
[0025] Figure 4 This is a top view of the stator core in a preferred embodiment of the present invention.
[0026] Figure 5 This is a three-dimensional structural diagram of the stator core in a preferred embodiment of the present invention;
[0027] Figure 6 This is a top view of the stator core in another preferred embodiment of the present invention;
[0028] Figure 7 This is a three-dimensional structural diagram of the stator core in another preferred embodiment of the present invention;
[0029] Figure 8 This is a top view of the stator core in another preferred embodiment of the present invention;
[0030] Figure 9 This is a three-dimensional structural diagram of the stator core in another preferred embodiment of the present invention;
[0031] In the picture:
[0032] Silicon steel 1; edge 11; rivet point 12; amorphous alloy 2; mounting groove 3. Detailed Implementation
[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.
[0034] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the mechanism 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.
[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixation," 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, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or a connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0036] The present invention will now be described in detail with reference to the accompanying drawings and preferred embodiments. Unless otherwise specified, the following embodiments and features can complement or combine with each other.
[0037] Reference Figure 1 and Figure 2 As shown, a preferred embodiment of this utility model provides a combined stator core, comprising silicon steel 1 and amorphous alloy 2. The silicon steel 1 has multiple axially penetrating mounting slots 3. All mounting slots 3 are spaced apart circumferentially on the silicon steel 1, meaning adjacent mounting slots 3 are spaced a certain distance apart circumferentially. Each mounting slot 3 contains a corresponding amorphous alloy 2, with all amorphous alloy 2 positioned within their respective mounting slots 3. The number of amorphous alloy 2 matches the number of mounting slots 3, with each amorphous alloy 2 placed within its corresponding mounting slot 3. The silicon steel 1 and amorphous alloy 2 are fixedly connected by pressure processing.
[0038] Specifically, after the amorphous alloy 2 is placed in the mounting groove 3, the silicon steel 1 can be compressed by a pressure processing device. The silicon steel 1 undergoes local deformation after being compressed, and thus is fixed to the amorphous alloy 2 in the mounting groove 3.
[0039] Furthermore, a preferred embodiment of the present invention provides an electric motor, the electric motor including any of the combined stator cores described in any one of the claims.
[0040] This invention provides a combined stator core and motor. The stator core has an amorphous alloy 2 embedded within a mounting groove 3 of silicon steel 1, and the silicon steel 1 and amorphous alloy 2 are fixed together by pressure processing. By arranging a certain volume of amorphous alloy 2 inside the silicon steel 1, the high strength and hardness of the amorphous alloy 2 are combined with the good plasticity and impact toughness of silicon steel 1, effectively avoiding the shortcomings of amorphous alloy 2 being thin, hard, and brittle. This improves the stability and reliability of the stator core structure, and maximizes motor efficiency with minimal amorphous alloy usage and minimal investment cost.
[0041] Meanwhile, the fixing process of amorphous alloy 2 in the stator core is simple, which can simplify the processing technology of amorphous alloy 2, reduce the processing difficulty of amorphous alloy, and improve production feasibility. Moreover, the investment in processing equipment is low and does not increase investment costs, resulting in high economic benefits.
[0042] In a preferred embodiment, silicon steel 1 and amorphous alloy 2 can be fixedly connected by riveting. In another embodiment, silicon steel 1 and amorphous alloy 2 can also be fixedly connected by extrusion or stamping. This application does not limit the fixing method of silicon steel 1 and amorphous alloy 2.
[0043] Return to reference Figure 1 The shape of the amorphous alloy 2 matches the shape of the mounting groove 3. For example, the shape of both the mounting groove 3 and the amorphous alloy 2 can be set as quadrilaterals (see reference). Figure 4 and Figure 5 ), triangle (refer to) Figure 6 and Figure 7 ) or a combination of triangles and trapezoids (see Figure 8 and Figure 9 This allows the amorphous alloy 2 to be placed and fixed in the mounting groove 3.
[0044] Reference Figure 2 As shown, in a preferred embodiment, at least one rivet point 12 is provided on the entire perimeter of each amorphous alloy 2 (i.e., all edges of the mounting groove 3) of the silicon steel 1. By applying pressure to the rivet point 12, the area of the silicon steel 1 near the amorphous alloy 12 (i.e., the edge of the mounting groove 3) can be deformed. After deformation, the silicon steel 1 can fill the gap between the silicon steel 1 and the amorphous alloy 2 and compress the amorphous alloy 2, so as to fix the silicon steel 1 and the amorphous alloy 2 together.
[0045] More specifically, when the amorphous alloy 2 is triangular in shape, at least one rivet point 12 may be provided on all edges 11 of the silicon steel 1 near the amorphous alloy 2. Specifically, one rivet point 12 may be provided on one of the edges of the silicon steel 1 near the amorphous alloy 2 (see reference). Figure 3a Alternatively, a riveting point 12 may be provided on each of two edges of the silicon steel 1 near the amorphous alloy 2 (see reference). Figure 3b Furthermore, a riveting point 12 can be set on each of the three edges of the silicon steel 1 near the amorphous alloy 2 (refer to...). Figure 3c This allows silicon steel 1 to be fixedly connected to amorphous alloy 2, and as the number of rivet points 12 on silicon steel 1 increases, the fixing effect of silicon steel 1 on amorphous alloy 2 becomes better.
[0046] In another preferred embodiment, at least one riveting point 12 is provided on the silicon steel 1 near the designated area of each amorphous alloy 2, where the riveting point 12 is adjacent to the edge 11 of the silicon steel 1.
[0047] This application does not limit the number or location of the riveting points 12 on the silicon steel 1. The riveting points 12 can be set at any position on the edge of the mounting groove 3 as needed, and the number of riveting points 12 on the silicon steel 1 can be increased or decreased as needed.
[0048] This application does not limit the shape and number of mounting grooves 3 on silicon steel 1. The shape of mounting groove 3 can be set as triangle, quadrilateral or trapezoid, and the number of mounting grooves 3 on silicon steel 1 can be increased or decreased as needed.
[0049] In a preferred embodiment, the amorphous alloy 2 is a circular structure, an elliptical structure, a fan-shaped structure, or other irregular structure with at least some of its edges being arc-shaped. At least one riveting point 12 is provided on the silicon steel 1 along the entire circumference of the amorphous alloy 2, preferably at least two riveting points 12, and all riveting points 12 are preferably symmetrically arranged circumferentially in the mounting groove 3.
[0050] Reference Figure 2 and Figure 3c As shown, in another preferred embodiment, the amorphous alloy 2 has a polygonal structure, and at least one riveting point 12 is provided on each edge 11 of the silicon steel 1 near the amorphous alloy 2. With this configuration, the silicon steel 1 can deform in the region near each edge 11 of the amorphous alloy 2, so that after riveting deformation, the silicon steel 1 can compress and fix the amorphous alloy 2 in all directions, improving the fixing effect of the silicon steel 1 and the amorphous alloy 2. (Refer to...) Figure 2 As shown, in one example, when the amorphous alloy 2 is quadrilateral, a rivet point 12 is provided on each of the four edges 11 of the silicon steel 1 near the amorphous alloy 2.
[0051] Reference Figures 3a-3cAs shown, in another example, the amorphous alloy 2 is triangular in shape, and the silicon steel 1 has a rivet point 12 on each of the three edges 11 near the amorphous alloy 2.
[0052] In a further preferred embodiment, all the riveting points 12 corresponding to each amorphous alloy 2 are symmetrically arranged on the edge 11 of the silicon steel 1, so that the silicon steel 1 can undergo relatively uniform deformation on each groove wall of the mounting groove 3, thereby further improving the fixing effect of the silicon steel 1 and the amorphous alloy 2.
[0053] Reference Figure 4 and Figure 5 and combined Figure 2 In a specific example, the amorphous alloy 2 is quadrilateral in shape, and the silicon steel 1 has four rivet points 12 on the circumference of the amorphous alloy 2. Each rivet point 12 is located at the middle position of the silicon steel 1 corresponding to the edge 11 of the amorphous alloy 2, so as to achieve symmetrical arrangement of the rivet points 12 on the outside of the amorphous alloy 2.
[0054] Reference Figure 6 and Figure 7 As shown, and in combination Figures 3a-3c In another specific example, the amorphous alloy 2 is triangular in shape, and the silicon steel 1 has a rivet point 12 on the circumference of the amorphous alloy 2 (see reference). Figure 3a ), two riveting points 12 (refer to) Figure 3b ) or three riveting points 12 (refer to) Figure 3c Each rivet point 12 is located at the middle position of the edge 11 of the silicon steel 1 corresponding to the amorphous alloy 2, so as to achieve an axisymmetric or centrally symmetrical arrangement of two or three rivet points 12 on the outside of the amorphous alloy 2.
[0055] Reference Figure 8 and Figure 9 As shown, in another specific example, the amorphous alloy 2 is in the shape of a triangle and a trapezoid, with the triangular and trapezoidal amorphous alloy 2 spaced apart circumferentially on the silicon steel 1. At least one rivet point 12 is provided on all edges 11 of the silicon steel 1 near the amorphous alloy 2.
[0056] Furthermore, the amorphous alloy 2 is made of stacked thin sheet structures, and the height of the amorphous alloy 2 matches the height of the mounting groove 3 in the axial direction of the silicon steel 1, so that the silicon steel 1 and the amorphous alloy 2 can be combined to form a complete stator core after installation and fixation.
[0057] Continue to refer to Figures 4-9 All amorphous alloys 2 are symmetrically arranged in the circumferential direction of silicon steel 1 to avoid large deformation and stress of silicon steel 1 after silicon steel 1 and amorphous alloys 2 are fixed.
[0058] In actual processing, it is preferable to simultaneously rivet the areas of silicon steel 1 corresponding to the amorphous alloy 2 symmetrically arranged on both sides of silicon steel 1, so as to further balance the pressure on the surface of silicon steel 1.
[0059] In summary, this utility model provides a combined stator core and motor. The stator core has an amorphous alloy 2 embedded within a mounting groove 3 of silicon steel 1, and the silicon steel 1 and amorphous alloy 2 are fixed together by pressure processing. By arranging a certain volume of amorphous alloy 2 inside the silicon steel 1, the high strength and hardness of the amorphous alloy 2 are combined with the good plasticity and impact toughness of silicon steel 1, effectively avoiding the shortcomings of the amorphous alloy 2 being thin, hard, and brittle. This improves the stability and reliability of the stator core structure, and maximizes motor efficiency with minimal amorphous alloy usage and minimal investment cost.
[0060] Meanwhile, the fixing process of amorphous alloy 2 in the stator core is simple, which can simplify the processing technology of amorphous alloy 2, reduce the processing difficulty of amorphous alloy, and improve production feasibility. Moreover, the investment in processing equipment is low and does not increase investment costs, resulting in high economic benefits.
[0061] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the present utility model.
Claims
1. A composite stator core, characterized in that, The device includes silicon steel and amorphous alloy. The silicon steel has multiple axially penetrating mounting slots, all of which are spaced apart in the circumferential direction. The number of amorphous alloys matches the number of mounting slots, with each amorphous alloy placed in a corresponding mounting slot. The silicon steel and the amorphous alloys are fixedly connected by pressure processing.
2. The combined stator core as described in claim 1, characterized in that, The silicon steel and the amorphous alloy are fixedly connected by riveting, and the shape of the amorphous alloy matches the shape of the mounting groove.
3. The combined stator core as described in claim 2, characterized in that, The silicon steel has at least one rivet point on the entire circumference of each amorphous alloy. By applying pressure to the rivet point, the silicon steel can be deformed so that the silicon steel and the amorphous alloy are fixedly connected.
4. The combined stator core as described in claim 3, characterized in that, All the riveting points corresponding to each of the amorphous alloys are symmetrically arranged circumferentially in the mounting groove.
5. The combined stator core as described in claim 3, characterized in that, The amorphous alloy has a polygonal structure, and the silicon steel has at least one rivet point on each edge of the amorphous alloy. Alternatively, the amorphous alloy may be a circular structure, an elliptical structure, a fan-shaped structure, or other irregular structure with at least some of its edges being arc-shaped.
6. The combined stator core as described in claim 5, characterized in that, The amorphous alloy is triangular in shape, and the silicon steel has a rivet point on each of the three edges near the amorphous alloy. Alternatively, the amorphous alloy may be quadrilateral in shape, and the silicon steel may have a rivet point on each of the four edges near the amorphous alloy.
7. The combined stator core as described in claim 5, characterized in that, The amorphous alloy is in the shape of a triangle and a trapezoid, and the triangular and trapezoidal amorphous alloys are spaced apart in the circumferential direction of the silicon steel; a rivet point is provided on each edge of the silicon steel near the amorphous alloy.
8. The combined stator core as described in any one of claims 1 to 7, characterized in that, The amorphous alloy is composed of stacked sheet structures, and the height of the amorphous alloy matches the height of the mounting groove along the axial direction of the silicon steel.
9. The combined stator core as described in any one of claims 1 to 7, characterized in that, All of the aforementioned amorphous alloys are arranged symmetrically in the circumferential direction of the silicon steel.
10. An electric motor, characterized in that, Includes the combined stator core as described in any one of claims 1 to 9.