Stator laminate and motor assembly

Abstract

The utility model provides a stator lamination and a motor assembly. The stator lamination comprises a first body and a second body, wherein the first body is of an annular structure with the axial direction as the axis; a plurality of first teeth extending from a radially inner edge of the body and extending in a radial direction coplanar with the first body wherein the first teeth are spaced apart from each other and form a first slot between adjacent first teeth; the shifting pieces extend from the first tooth surface to the two sides of the first groove, and a preset angle is formed between the plane where the shifting pieces are located and the plane where the body and the first teeth are located; wherein the preset angle is set to be between 30 degrees and 60 degrees. The stator lamination and the motor assembly have the advantages of being simple, reliable, easy to implement, convenient to use and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of motor structure. More particularly, the present application relates to a stator lamination which aims to provide reliable component positioning and fixing capability. The present application also relates to a motor assembly comprising the above-mentioned stator lamination. BACKGROUND

[0002] Motors usually comprise a plurality of copper bars, and the copper bars can be arranged in slots between the teeth of a stator to improve the slot fill factor. During the installation of the copper bars, a dip member can be used to assist the installation of the copper bars, and the dip member needs to be removed after the installation of the copper bars. The existing dip member removal process is usually time-consuming and laborious, and can cause pollution and environmental problems.

[0003] Therefore, there is a continuous demand for new motor structures in the art, and the direction of such demand is to reduce the processing requirements of the dip member. SUMMARY

[0004] It is an object of one aspect of the present application to provide a stator lamination which can effectively fix and position a stator core and reduce process requirements. It is an object of another aspect of the present application to provide a motor assembly comprising the above-mentioned stator lamination.

[0005] The object of the present application is achieved by the following technical solutions:

[0006] A stator lamination comprising:

[0007] a first body configured as an annular structure with the axial direction as the center;

[0008] a plurality of first teeth extending from the radially inner edge of the body and extending in the radial direction coplanar with the first body, wherein the first teeth are spaced apart from each other and form first slots between adjacent first teeth; a plurality of tabs extending from the two sides of the first teeth facing the two sides of the first slots, and the plane on which the tabs are located forms a predetermined angle with the plane on which the body and the first teeth are located;

[0009] wherein the predetermined angle is set to be between 30 degrees and 60 degrees.

[0010] In the above-mentioned stator lamination, optionally, the value of the predetermined angle is set to one of 30, 35, 40, 45, 50, 55 and 60.

[0011] In the above-mentioned stator lamination, optionally, at least one tab is arranged on each side of each first tooth, and each first tooth and tab are configured as an axisymmetric structure.

[0012] In the stator lamination described above, optionally, one or more tabs are respectively arranged on one side of each first tooth.

[0013] In the stator lamination described above, optionally, the plurality of tabs are spaced apart from each other.

[0014] In the stator lamination described above, optionally, the tab is configured to be elastically deformable.

[0015] In the stator lamination described above, optionally, the body, the first teeth, and the tab are configured to be integrated.

[0016] In the stator lamination described above, optionally, the tab has one of the following shapes: a triangle, a rectangle, a trapezoid, a prism, a part of a circle, a part of an ellipse, a regular pentagon, a regular hexagon, or a combination thereof.

[0017] A motor assembly, comprising:

[0018] a stator, comprising:

[0019] a plurality of the stator laminations described above;

[0020] a plurality of second stator laminations, comprising:

[0021] a second body configured as a ring structure having an axial direction as an axis;

[0022] a plurality of second teeth extending from a radially inner edge of the second body and extending in a radial direction in a plane with the second body, wherein the second teeth are spaced apart from each other and form second slots between adjacent second teeth; and

[0023] a plurality of stator cores arranged in spaces formed by the first slots and the second slots;

[0024] a rotor arranged inside the stator; and

[0025] a housing accommodating the stator and the rotor.

[0026] In the motor assembly described above, optionally, the plurality of second stator laminations are arranged between two stator laminations, and an outer surface of the stator core is in contact with the tab, such that the tab is deformed and fixes the stator core. BRIEF DESCRIPTION OF DRAWINGS

[0027] The application will be described in further detail below with reference to the drawings and preferred embodiments. Those skilled in the art will appreciate that the drawings are for illustrative purposes only and are not a limitation on the scope of the application. Further, the drawings are not necessarily to scale and, unless otherwise specifically indicated, are intended as conceptual representations only. Additionally, unless specifically stated otherwise, the drawings are intended to conceptualize the construction or arrangement of the objects illustrated and may include exaggerated or stylized representations of the described objects.

[0028] Figure 1 is a perspective view of one embodiment of a stator lamination of the present application.

[0029] Figure 2 is a perspective view of one embodiment of a stator lamination of the present application. Figure 1 is a partial enlarged view of the embodiment shown.

[0030] Figure 3 is a partial enlarged view of the embodiment shown. Figure 1 is a partial enlarged view of the embodiment shown.

[0031] Figure 4 is a perspective view of one embodiment of a motor assembly of the present application.

[0032] Figure 5 is a perspective view of one embodiment of a motor assembly of the present application. Figure 4 is a partial enlarged view of the embodiment shown. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present application will be described in detail below with reference to the drawings. Those skilled in the art will appreciate that the description is merely illustrative, example and not to be construed as limiting the scope of the application.

[0034] First, it should be noted that the terms top, bottom, upward, downward, and the like used herein are defined with reference to the orientation of the various drawings. These terms are relative concepts and, as such, will vary depending on the position and state in which they are placed. Therefore, these or other terms of orientation should not be construed as limiting.

[0035] Further, it should be noted that for any single technical feature described or implied in the embodiments herein or shown or implied in the drawings, these technical features (or their equivalents) can continue to be combined to obtain other embodiments not directly mentioned herein.

[0036] It should be noted that like reference numerals in different drawings represent the same or substantially similar components.

[0037] Figures 1 to 3Different aspects of one embodiment of the stator lamination 10 of this application are shown. The stator lamination 10 may include: a first body 100, a plurality of first teeth 200 and a plurality of levers 300, etc.

[0038] The first body 100 can be constructed as a generally ring-shaped structure, such as a ring-shaped structure with the axial direction AA as the central axis of symmetry. The first body 100 can be approximately in the same plane. For example, Figure 3 The dashed line L1 indicates the plane in which the first body 100 is located. In one embodiment, a plurality of first teeth 200 may be located approximately in the same plane as the first body 100. In one embodiment, the first body 100 may be constructed as a ring.

[0039] Multiple first teeth 200 may extend from the body 100 and may be arranged at the inner edge of the annular profile of the body 100. In one embodiment, the first teeth 200 may extend in a radial direction RR and may be referred to as extending from the radially inner edge of the body 100. In one embodiment, the first teeth 200 and the body 100 may be located in the same plane. The dimensions of each first tooth 200 may be substantially equal and spaced apart from each other. A first groove 201 is formed between adjacent first teeth 200. The first tooth 200 may include a side surface 210 extending substantially in the radial direction RR and an end portion 220 extending substantially in the circumferential direction. The end portion 220 may be located in a radially inward position. It is readily understood that the side surface 210 may face the first groove 201 and the end portion 220 may face a rotor (not shown). In one embodiment, the end portion 220 of the first tooth 200 may also be provided with a protrusion 221 extending in the circumferential direction to form a pole shoe structure.

[0040] Multiple paddles 300 may be arranged on the sides 210 of multiple first teeth 200. In one embodiment, the multiple paddles 300 may extend from both sides of the multiple first teeth 200 facing the first groove 201. Figure 2 and Figure 3 As shown, each paddle 300 may extend towards the same side of the body 100 and may form a symmetrical structure on both sides of the first groove 201. Each first tooth 200 and the paddle extending from it also form an axially symmetrical structure. Each side 210 of each first tooth 200 may have one or more paddles 300 arranged thereon. In the case of multiple paddles 300, the paddles 300 may be spaced apart from each other. The size and shape of each paddle 300 may be constructed to be substantially the same or different. The paddles 300 may be positioned on a plane different from the body 100 and the first tooth 200. Figure 3As shown in FIG. 1, a dashed line L2 shows a plane in which the tab 300 is located. A predetermined angle Al can be formed between the plane in which the tab 300 is located and the plane in which the body 100 and the first teeth 200 are located. In one embodiment, the predetermined angle Al can be set between 30 degrees and 60 degrees, for example, can be 30 degrees, 35 degrees, 40 degrees, 45 degrees, 50 degrees, 55 degrees, or 60 degrees, etc.

[0041] The tab 300 can be configured to be elastically deformable, and can be configured to be integral with the body 100 and the first teeth 200. In one embodiment, the stator lamination 10 can be configured to be integral, and can be made of silicon steel. In one embodiment, the stator lamination can be manufactured by a machining process such as stamping. In one embodiment, the tab 300 can have one of the following shapes: a triangle, a rectangle, a trapezoid, a prism, a part of a circle, a part of an ellipse, a regular pentagon, a regular hexagon, or a combination thereof, etc.

[0042] The axial direction A-A referred to herein can be a direction in which a rotation axis of a rotor of the motor assembly is located. The radial direction R-R referred to herein can be a direction in which a ray extending in a plane perpendicular to the axial direction A-A from a point on the axial direction A-A is directed. The circumferential direction referred to herein is a direction in which a circular profile of a torus formed by the first body 100 of the stator lamination 10 is located.

[0043] The present application also relates to a motor assembly. Figure 4 and Figure 5 Parts of an embodiment of the motor assembly of the present application are shown. The motor assembly can include a rotor, a stator, and a housing, etc. The housing can accommodate the rotor and the stator. The rotor can be accommodated inside the stator and rotatable relative to the stator. In one embodiment, the stator can include a plurality of the above-described stator laminations 10, a plurality of second stator laminations 11, and a plurality of stator cores 12. The second stator laminations 11 can have structures other than the tab 300 in the stator laminations 10. For example, the second stator laminations 11 can include a second body configured as a ring structure having the axial direction A-A as an axis, a plurality of second teeth extending from a radially inner edge of the second body and extending in the radial direction R-R in a plane common to the second body, wherein the second teeth are spaced apart from each other and form second slots between adjacent second teeth.

[0044] The plurality of stator laminations 10 and the plurality of second stator laminations 11 can be stacked together. In one embodiment, the first teeth 210 can correspond to the second teeth, and the first slots 201 can correspond to the second slots, such that the first slots 201 and the second slots form a space in communication. The plurality of second stator laminations 11 can be stacked between every two stator laminations 10, such that the tabs 300 on the adjacent stator laminations 10 can be spaced apart from each other in the axial direction A-A and do not interfere with each other. The stator core 12 can be arranged in the space formed by the first slots 201 and the second slots, and an outer surface of the stator core 12 can be in contact with the tabs 300, such that the tabs 300 are deformed and fix the stator core 12.

[0045] The stator lamination and motor assembly of the present application have the advantages of being simple and reliable, easy to implement, convenient to use, etc., can effectively fix the stator core and reduce the process requirements, thereby reducing the manufacturing cost and improving the reliability.

[0046] The present application is disclosed with reference to the drawings and to enable a person of ordinary skill in the art to practice the application, including making and using any devices or systems and performing any incorporated methods. The scope of the application is defined by the claims appended hereto and includes other examples that occur to those who are skilled in that art. Such other examples are deemed to be within the scope of the claims to the extent that they do not include structural elements other than those claimed or that they do not consist of the same basic structural elements but include insubstantial variations that do not materially alter the basic concept of the claimed technical solution.

Claims

1. A stator lamination characterized by, Comprising: a first body (100) configured as a ring structure having an axial direction (A-A) as an axis; a plurality of first teeth (200) extending from a radially inner side edge of the body (100) and extending in a radial direction (R-R) in a plane common with the first body (100), wherein the first teeth (200) are spaced apart from each other and form first grooves (201) between adjacent first teeth (200); a plurality of tabs (300) extending from both sides of the first teeth (200) facing the first grooves (201), and a plane in which the tabs (300) are present forms a predetermined angle (A1) with a plane in which the body (100) and the first teeth (200) are present; wherein the predetermined angle (A1) is set to be between 30 degrees and 60 degrees.

2. The stator lamination of claim 1, wherein The value of the predetermined angle (A1) is set to one of 30, 35, 40, 45, 50, 55, and 60.

3. The stator lamination of claim 1, wherein At least one tab (300) is arranged on each side of each first tooth (200), and each first tooth (200) and tab (300) are configured as an axisymmetric structure.

4. The stator lamination of claim 3, characterized in that One or more tabs (300) are arranged on each side of each first tooth (200).

5. The stator lamination of claim 4, characterized in that The plurality of tabs (300) are spaced apart from each other.

6. The stator lamination of any of claims 1-5, wherein, The tabs (300) are configured to be elastically deformable.

7. The stator lamination of any of claims 1-5, wherein, The body (100), the first teeth (200), and the tabs (300) are configured as one body.

8. The stator lamination of any of claims 1-5, wherein, The tabs (300) have one of the following shapes: a triangle, a rectangle, a trapezoid, a prism, a part of a circle, a part of an ellipse, a regular pentagon, a regular hexagon, or a combination thereof.

9. An electric machine assembly characterized by Comprising: a stator comprising: a plurality of stator laminations (10) according to any one of claims 1-8; a plurality of second stator laminations (11) comprising: a second body configured as a ring structure having an axial direction (A-A) as an axis; a plurality of second teeth extending from a radially inner side edge of the second body and extending in a radial direction (R-R) in a plane common with the second body, wherein the second teeth are spaced apart from each other and form second grooves between adjacent second teeth; and a plurality of stator cores (12) arranged in a space formed by the first grooves (201) and the second grooves; a rotor arranged inside the stator; and a housing accommodating the stator and the rotor.

10. The electric machine assembly of claim 9, wherein, The plurality of second stator laminations (11) are arranged between two stator laminations (10), and an outer surface of the stator core (12) is in contact with the tabs (300) such that the tabs (300) are deformed and fix the stator core (12).

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