Motor stator lamination, motor and compressor

Abstract

The application relates to a motor stator lamination, a motor and a compressor. The motor stator lamination comprises a lamination body, a through hole is arranged in the middle of the lamination body, N embedded wire groove groups are arranged in the circumferential direction of the through hole, the embedded wire groove groups comprise A-type embedded wire grooves, B-type embedded wire grooves and C-type embedded wire grooves, the outer edge of the lamination body is sequentially provided with a circular arc edge, a first cut edge and a second cut edge, the A-type embedded wire grooves correspond to the first cut edge, the B-type embedded wire grooves correspond to the circular arc edge, and the C-type embedded wire grooves correspond to the second cut edge. The distance from the groove bottom of the A-type embedded wire grooves, the groove bottom of the B-type embedded wire grooves and the groove bottom of the C-type embedded wire grooves to the edge of the lamination body is less than M. The scheme provided by the application can make the width of the stator yoke consistent, thereby improving the phenomenon that the magnetic density distribution of the existing motor stator lamination is uneven, preventing the motor from being heated and improving the performance of the motor.

Description

Technical Field

[0001] This application relates to the field of motor technology, and in particular to motor stator laminations, motors, and compressors. Background Technology

[0002] In practical applications, it has been found that the slot shapes of existing motor stator laminations are too uniform, mostly using only one or two types. This results in inconsistent distances from the slot bottom to the stator's outer contour (i.e., the width of the stator yoke). Consequently, the magnetic flux density saturation of the motor stator laminations is concentrated at the narrowest part of the stator yoke, while the wider parts of the stator yoke have sparse magnetic flux density, leading to waste. This results in an uneven distribution of the magnetic field. Due to this uneven magnetic field distribution, localized areas of excessive magnetic field density occur, causing the motor temperature to rise and its performance to degrade.

[0003] Therefore, there is a need to provide a motor stator lamination that can improve the uneven magnetic flux distribution of existing motor stator laminations, thereby avoiding performance degradation caused by motor overheating. Summary of the Invention

[0004] To overcome the problems existing in related technologies, this application provides a motor stator lamination that can improve the uneven magnetic flux distribution of existing motor stator laminations, thereby avoiding performance degradation caused by motor overheating.

[0005] The first aspect of this application provides a motor stator lamination, including a lamination body.

[0006] The punch body has a through hole in the middle;

[0007] The through hole is provided with N sets of wire embedding grooves in its circumferential direction;

[0008] The wire embedding groove group includes type A wire embedding groove, type B wire embedding groove and type C wire embedding groove;

[0009] The outer edge of the sheet body includes an arc edge, a first tangent edge, and a second tangent edge;

[0010] The type A inlay groove corresponds to the first cut edge, the type B inlay groove corresponds to the arc edge, and the type C inlay groove corresponds to the second cut edge;

[0011] The difference between any two distances from the bottom of the type A embedding groove, the bottom of the type B embedding groove, and the bottom of the type C embedding groove to the edge of the lamination body is less than M.

[0012] In one embodiment, the number of the arc edges is 6, the number of the first cut edges is 2, the number of the second cut edges is 4, and the outer edge of the stamping body is distributed in a ring shape in sequence as the first cut edge, the arc edges, the second cut edge, the arc edges, the second cut edge, and the arc edges;

[0013] The N winding slot groups are divided into 4 winding slot groups, and the 4 winding slot groups are distributed in a centrally symmetrical manner according to the clock direction.

[0014] In one embodiment, the wire guide group is provided with one type A wire guide, two type B wire guides, two type C wire guides and one type B wire guide in sequence.

[0015] In one embodiment, the groove depths of the type A wire groove, the type B wire groove, and the type C wire groove are H1, H3, and H2, respectively, where H1 < H2 < H3.

[0016] In one embodiment, the distances from the first cut edge and the second cut edge to the center of the lamination body are L1 and L2, respectively, where L1 < L2.

[0017] In one embodiment, the wire embedding group is provided with one type A wire embedding groove, four type C wire embedding grooves and one type B wire embedding groove in sequence; the type A wire embedding groove corresponds to the first cut edge, the type B wire embedding groove corresponds to the arc edge, the two type C wire embedding grooves close to the type A wire embedding groove correspond to the arc edge, and the two type C wire embedding grooves close to the type B wire embedding groove correspond to the second cut edge.

[0018] In one embodiment, the wire guide group further includes a D-type wire guide, and the wire guide group is sequentially distributed with one A-type wire guide, two D-type wire guides, two C-type wire guides and one B-type wire guide. The depth of the D-type wire guide is H4, where H4 ≠ H3, and H4 > H2 > H1.

[0019] In one embodiment, the lamination body is provided with windings, which are symmetrically distributed and include a main winding and a secondary winding.

[0020] A second aspect of this application provides an electric motor, including a stator assembly, the stator assembly including motor stator laminations, the motor stator laminations being any of the motor stator laminations mentioned above.

[0021] A third aspect of this application provides a compressor that includes the aforementioned motor.

[0022] The technical solution provided in this application may include the following beneficial effects: The stator lamination body of the motor of this application has a through hole in the middle; N winding groove groups are provided around the through hole; the winding groove groups include type A winding grooves, type B winding grooves, and type C winding grooves; the outer edge of the lamination body is sequentially set as an arc edge, a first tangent edge, and a second tangent edge; type A winding grooves correspond to the first tangent edge, type B winding grooves correspond to the arc edge, and type C winding grooves correspond to the second tangent edge. The difference between any two distances from the bottom of type A winding groove, the bottom of type B winding groove, and the bottom of type C winding groove to the edge of the lamination body is less than M.

[0023] This application utilizes A-type, B-type, and C-type winding slots with varying depths. This structure fully leverages the space between the lamination body in both the length and width directions. Furthermore, the difference between any two distances from the bottom of the A-type, B-type, and C-type winding slots to the edge of the lamination body is less than M. This structure enables the stator yoke width to be nearly uniform, thereby improving the uneven magnetic flux distribution in existing motor stator laminations, preventing motor overheating, and enhancing motor performance.

[0024] In addition, the groove depths of different embedded slots are different. This structure makes full use of the space between the lamination body in the length and width directions to increase the slot area and thus improve motor efficiency.

[0025] The motor stator lamination of this application makes full use of the structural features of the lamination body's arc edge, first tangent edge, and second tangent edge to ensure sufficient slot area to improve motor efficiency.

[0026] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0027] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0028] Figure 1 This is a schematic diagram of the structure of a prior art motor stator lamination shown in the embodiments of this application;

[0029] Figure 2 This is a schematic diagram of the structure of a motor stator lamination shown in an embodiment of this application;

[0030] Figure 3 This is a schematic diagram of another slot distribution structure of the motor stator lamination shown in the embodiments of this application;

[0031] Figure 4This is a schematic diagram of another slot distribution structure of the motor stator lamination shown in the embodiments of this application;

[0032] Figure 5 This is a schematic diagram of the structure of the first and second cut edges (including segmented structure) of the motor stator lamination shown in the embodiments of this application;

[0033] Figure 6 This is a schematic diagram of the arc edge (including segmented structure) of the motor stator lamination shown in the embodiments of this application;

[0034] Figure 7 This is a schematic diagram of the winding distribution structure of the motor stator laminations shown in an embodiment of this application;

[0035] Figure 8 This is a schematic diagram of another winding distribution structure of the motor stator laminations shown in an embodiment of this application;

[0036] Figure 9 This is a schematic diagram of another winding distribution structure of the motor stator laminations shown in an embodiment of this application.

[0037] 1. Stamped body; 11. Through hole; 12. Rounded edge; 13. First cut edge; 14. Second cut edge; 2. Wire embedding groove group; 21. Type A wire embedding groove; 22. Type B wire embedding groove; 23. Type C wire embedding groove; 24. Type D wire embedding groove. Detailed Implementation

[0038] Preferred embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0039] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0040] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0041] Example 1

[0042] In practical applications, it has been found that the slot shapes of existing motor stator laminations are too uniform, mostly using only one or two types. This results in inconsistent distances from the slot bottom to the stator's outer contour (i.e., the width of the stator yoke). Consequently, the magnetic flux density saturation of the motor stator laminations is concentrated at the narrowest part of the stator yoke, while the wider parts of the stator yoke have sparse magnetic flux density, leading to waste. This results in an uneven distribution of the magnetic field. Due to this uneven magnetic field distribution, localized areas of excessive magnetic field density occur, causing the motor temperature to rise and its performance to degrade.

[0043] Therefore, there is a need to provide a motor stator lamination that can improve the uneven magnetic flux distribution of existing motor stator laminations, thereby avoiding performance degradation caused by motor overheating.

[0044] To address the aforementioned issues, this application provides a motor stator lamination that improves upon the uneven magnetic flux distribution in existing motor stator laminations, thereby preventing performance degradation due to motor overheating.

[0045] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0046] Figure 1 This is a schematic diagram of the structure of a prior art motor stator lamination shown in the embodiments of this application;

[0047] Figure 2 This is a schematic diagram of the structure of a motor stator lamination shown in an embodiment of this application.

[0048] See Figure 2 .

[0049] The stator laminations of the motor in this embodiment include a lamination body 1, and the stator core is formed by a plurality of stacked stator laminations.

[0050] The lamination body 1 has a through hole 11 in the middle. In this embodiment of the application, the through hole 11 is used to set the rotor. Its size can be set according to the actual production settings. This application does not limit it.

[0051] The through hole 11 is provided with N wire-inserting groove groups 2 in the circumferential direction; the wire-inserting groove group 2 includes type A wire-inserting groove 21, type B wire-inserting groove 22 and type C wire-inserting groove 23; the groove depths of type A wire-inserting groove 21, type B wire-inserting groove 22 and type C wire-inserting groove 23 are different. In this application, the groove depth refers to the distance from the groove opening to the groove bottom, such as... Figure 2 As shown. This application uses type A winding groove 21, type B winding groove 22 and type C winding groove 23, with different groove depths. This structure makes full use of the space between the length and width directions of the lamination body 1. That is, the groove depth of the winding groove is set according to the shape of the lamination body 1, making full use of the space of the lamination body 1 and maximizing the groove area. By increasing the groove area, the efficiency of the motor can also be improved.

[0052] The outer edge of the stamp body 1 is sequentially set as an arc edge 12, a first cutting edge 13, and a second cutting edge 14;

[0053] Type A inlay groove 21 corresponds to the first cut edge 13, Type B inlay groove 22 corresponds to the arc edge 12, and Type C inlay groove 23 corresponds to the second cut edge 14. The ratio of the difference between any two distances from the bottom of Type A inlay groove 21, the bottom of Type B inlay groove 22, and the bottom of Type C inlay groove 23 to the edge of the lamination body 1 is less than M. In this embodiment, "the ratio of the difference between any two distances is less than M" means that the ratio between any two distances from the bottom of Type A inlay groove 21 to the edge of the lamination body 1, the bottom of Type C inlay groove 23 to the edge of the lamination body 1, and the bottom of Type B inlay groove 22 to the edge of the lamination body 1 is less than M. For example, (distance from the bottom of Type A inlay groove 21 to the edge of the lamination body 1 - distance from the bottom of Type C inlay groove 23 to the edge of the lamination body 1) / distance from the bottom of Type C inlay groove 23 to the edge of the lamination body 1 The distance to the edge is less than M, (the distance from the bottom of the A-type inlay groove 21 to the edge of the stamping body 1 - the distance from the bottom of the B-type inlay groove 22 to the edge of the stamping body 1) / the distance from the bottom of the B-type inlay groove 22 to the edge of the stamping body 1 is less than M, (the distance from the bottom of the C-type inlay groove 23 to the edge of the stamping body 1 - the distance from the bottom of the B-type inlay groove 22 to the edge of the stamping body 1) / the distance from the bottom of the B-type inlay groove 22 to the edge of the stamping body 1 is less than M. For example, M is less than or equal to 10%.

[0054] The stator lamination of this application fully utilizes the arc edge 12, the first tangent edge 13, and the second tangent edge 14 of the lamination body 1. This not only ensures sufficient slot area to improve motor efficiency but also ensures that the difference between any two distances from the bottom of the A-type winding slot 21, the bottom of the B-type winding slot 22, and the bottom of the C-type winding slot 23 to the edge of the lamination body 1 is less than M. This structure allows the stator yoke width to be similar and consistent, thereby improving the uneven magnetic flux distribution in existing motor stator laminations, preventing motor overheating, and improving motor performance. The stator yoke width refers to the distance from the bottom of the winding slot to the outer edge of the lamination body 1.

[0055] The beneficial effects of this application's embodiments are as follows: The motor stator lamination body of this application has a through hole in the middle; N winding groove groups are arranged circumferentially around the through hole; the winding groove groups include type A winding grooves, type B winding grooves, and type C winding grooves; the outer edge of the lamination body is sequentially set as an arc edge, a first tangent edge, and a second tangent edge; type A winding grooves correspond to the first tangent edge, type B winding grooves correspond to the arc edge, and type C winding grooves correspond to the second tangent edge. The difference between any two distances from the bottom of type A winding groove, the bottom of type B winding groove, and the bottom of type C winding groove to the edge of the lamination body is less than M.

[0056] This application utilizes A-type, B-type, and C-type winding slots with varying depths. This structure fully leverages the space between the lamination body in both the length and width directions. Furthermore, the difference between any two distances from the bottom of the A-type, B-type, and C-type winding slots to the edge of the lamination body is less than M. This structure enables the stator yoke width to be nearly uniform, thereby improving the uneven magnetic flux distribution in existing motor stator laminations, preventing motor overheating, and enhancing motor performance.

[0057] In addition, the different groove depths of the different inlay grooves not only make full use of the space between the lamination body in the length and width directions, but also improve motor efficiency by increasing the groove area.

[0058] The motor stator lamination of this application makes full use of the arc edge, first cut edge and second cut edge of the lamination body to ensure sufficient slot area to improve motor efficiency.

[0059] Example 2

[0060] The stator laminations described in Embodiment 1 above can improve the uneven magnetic flux distribution of existing stator laminations, thereby preventing performance degradation due to motor overheating. In addition, one of the factors affecting motor efficiency is the area of ​​the stator lamination slots. One way to improve motor efficiency is to increase the area of ​​the slots; however, directly increasing the slot area reduces the width of the core magnetic circuit, causing magnetic saturation and failing to achieve the desired efficiency improvement. This application will further illustrate how the stator laminations utilize the space within the lamination body to increase the slot area.

[0061] Figure 2 This is a schematic diagram of the structure of a motor stator lamination shown in an embodiment of this application.

[0062] See Figure 2 .

[0063] The motor stator lamination in this embodiment includes a lamination body 1.

[0064] The stamp body 1 has a through hole 11 in the middle, and N wire-inserting groove groups 2 are provided around the through hole 11. The wire-inserting groove group 2 includes type A wire-inserting groove 21, type B wire-inserting groove 22 and type C wire-inserting groove 23. The outer edge of the stamp body 1 is sequentially set as an arc edge 12, a first cut edge 13 and a second cut edge 14. Type A wire-inserting groove 21 corresponds to the first cut edge 13, type B wire-inserting groove 22 corresponds to the arc edge 12 and type C wire-inserting groove 23 corresponds to the second cut edge 14.

[0065] The difference between any two distances from the bottom of type A winding groove 21, type B winding groove 22, and type C winding groove 23 to the edge of the lamination body 1 is less than M.

[0066] The number of arc edges 12 is 6, the number of first cut edges 13 is 2, and the number of second cut edges 14 is 4. The outer edge of the stamping body 1 is arranged in a ring according to the first cut edge 13, arc edges 12, second cut edges 14, arc edges 12, second cut edges 14 and arc edges 12.

[0067] That is, the outer edge shape of the entire stamping body 1 is the first cut edge 13, the arc edge 12, the second cut edge 14, the arc edge 12, the second cut edge 14, the arc edge 12, the first cut edge 13, the arc edge 12, the second cut edge 14, the arc edge 12, the second cut edge 14 and the arc edge 12.

[0068] N winding slot groups 2 are divided into 4 winding slot groups 2, which are centrally symmetrically distributed along the clock direction. That is, according to the XX′ horizontal line and YY′ vertical line of the lamination body 1, the 4 winding slots are respectively distributed on both sides of the XX′ horizontal line and the YY′ vertical line of the lamination body 1, forming a symmetrical distribution structure along the XX′ horizontal line and the YY′ vertical line. Figure 2 As shown,

[0069] The wire embedding groove group 2 is arranged with one type A wire embedding groove 21, two type B wire embedding grooves 22, two type C wire embedding grooves 23 and one type B wire embedding groove 22 in sequence.

[0070] The through hole 11 has a total of 24 wire-inserting grooves in its circumference, namely four type A wire-inserting grooves 21, twelve type B wire-inserting grooves 22, and eight type C wire-inserting grooves 23. The wire-inserting grooves are centrally symmetrically distributed.

[0071] The groove depths of type A wire inlay groove 21, type B wire inlay groove 22, and type C wire inlay groove 23 are H1, H3, and H2, respectively, where H1 < H2 < H3. In this embodiment, the groove depth is the distance from the groove opening to the groove bottom. Figure 2 As shown.

[0072] The distances from the first cut edge 13 and the second cut edge 14 to the center of the punch body 1 are L1 and L2, respectively, with L1 < L2.

[0073] That is, the groove depth H3 of the B-type inlay groove 22 corresponding to the arc edge 12 is the deepest.

[0074] The motor stator is also equipped with windings, typically including a main winding R0 and an auxiliary winding R1. The slot depths of type A winding slot 21, type B winding slot 22, and type C winding slot 23 are H1, H3, and H2, respectively. The setting of H1 < H2 < H3 allows the two sets of windings to have a certain gradient, gradually changing from the slot with the largest area to the slot with the smallest area. The overall winding distribution is closer to a sine wave, which solves the problem of slot utilization after the winding adopts a sinusoidal distribution. It can weaken harmonic magnetomotive force, reduce winding line loss, and improve the operating performance of the motor at rated power.

[0075] The beneficial effects of the embodiments of this application are as follows: By setting the slot depths of type A winding slots, type B winding slots, and type C winding slots to H1, H3, and H2 respectively, and H1 < H2 < H3, the two sets of windings are arranged with a certain gradient, gradually changing from the slot with the largest area to the slot with the smallest area. The overall winding distribution is closer to a sine wave, which solves the problem of slot utilization after the winding adopts a sinusoidal distribution. It can weaken harmonic magnetomotive force, reduce winding line loss, and improve the operating performance of the motor at rated power.

[0076] Example 3

[0077] The above embodiments describe the groove depth distribution of the stator lamination winding slots of the motor. In practical applications, the A-type winding slots, B-type winding slots, and C-type winding slots also have another distribution structure.

[0078] Figure 3 This is a schematic diagram of another slot distribution structure of the motor stator lamination shown in the embodiments of this application;

[0079] Figure 4 This is a schematic diagram of another slot distribution structure of the motor stator lamination shown in the embodiments of this application;

[0080] See Figure 3 and Figure 4 .

[0081] This application embodiment provides another slot distribution structure for motor stator laminations, specifically as follows:

[0082] The wire guide group 2 consists of one type A wire guide 21, four type C wire guides 23, and one type B wire guide 22. Type A wire guide 21 corresponds to the first cut edge 13, type B wire guide 22 corresponds to the rounded edge 12, the two type C wire guides 23 closest to type A wire guide 21 correspond to the rounded edge 12, and the two type C wire guides 23 closest to type B wire guide 22 correspond to the second cut edge 14. For example... Figure 3 As shown.

[0083] The motor stator lamination of this embodiment includes 24 winding slots, namely four A-type winding slots 21, sixteen C-type winding slots 23, and four B-type winding slots 22, which are centrally symmetrically distributed.

[0084] In addition to the slot type mentioned above, this application embodiment also provides another winding slot distribution for motor stator laminations. Specifically, the motor stator laminations also include D-type winding slots. The winding slot group 2 is arranged in sequence with one A-type winding slot 21, two D-type winding slots, two C-type winding slots 23 and one B-type winding slot 22. The depth of the D-type winding slot is H4, H4 ≠ H3, H4 > H2 > H1, that is, H4 is greater than or less than H3, H4 is greater than H2, and H2 is greater than H1.

[0085] The motor stator laminations include 24 slots: four type A slots 21, eight type D slots, eight type C slots 23, and four type B slots 22. These slots are centrally symmetrically distributed. For example... Figure 4 As shown.

[0086] The lamination body 1 is provided with windings, which are symmetrically distributed. The windings include a main winding R0 and a secondary winding R1. The main winding R0 is distributed symmetrically along the horizontal line XX′, and the secondary winding R1 is distributed symmetrically along the vertical line YY′.

[0087] Specifically, such as Figure 7 , Figure 8 and Figure 9 As shown, Figure 7 This is a schematic diagram of the winding distribution structure of the motor stator laminations shown in an embodiment of this application;

[0088] Figure 8 This is a schematic diagram of another winding distribution structure of the motor stator laminations shown in an embodiment of this application;

[0089] Figure 9 This is a schematic diagram of another winding distribution structure of the motor stator laminations shown in an embodiment of this application.

[0090] As shown in the figure, the solid line represents the main winding R0, and the dashed line represents the secondary winding R1.

[0091] In this embodiment of the application, the arc edge 12 can be segmented into a segmented structure F based on the original arc contour. The segmented structure F can be located in the middle of the arc, or at both ends of the middle of the arc, such as... Figure 6 As shown, the segmented structure F of the arc edge 12 is within the protection scope of this invention.

[0092] In this embodiment of the application, the first cut edge 13 and the second cut edge 14 can be segmented into segments F based on their outlines. The segment structure F can be located in the middle of the cut edge, or it can be located at either end of the middle of the cut edge. For example... Figure 5 As shown, the segmented structure F processing of the first cutting edge 13 and the second cutting edge 14 is within the protection scope of this invention.

[0093] The beneficial effects of this application's embodiments are as follows: By setting different groove depths for different winding slots, not only is the space between the length and width directions of the lamination body fully utilized, but the motor efficiency can also be improved by increasing the groove area. The motor stator lamination of this application fully utilizes the arc edge, first tangent edge, and second tangent edge of the lamination body to ensure sufficient groove area to improve motor efficiency.

[0094] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A motor stator lamination, characterized in that: Including the lamination body (1), The punch body (1) has a through hole (11) in the middle; The through hole (11) is provided with N wire-insertion groove groups (2) in the circumferential direction; The wire inlay group (2) includes type A wire inlay (21), type B wire inlay (22) and type C wire inlay (23); The outer edge of the punch body (1) includes an arc edge (12), a first tangent edge (13), and a second tangent edge (14); the arc edge (12) is provided with a segmented structure, which is located in the middle part of the arc or at both ends of the middle part of the arc; the first tangent edge (13) and the second tangent edge (14) are provided with segmented structures; the segmented structures are located in the middle part of the tangent edge or at both ends of the middle part of the tangent edge; The type A inlay groove (21) corresponds to the first cut edge (13), the type B inlay groove (22) corresponds to the arc edge (12), and the type C inlay groove (23) corresponds to the second cut edge (14); the groove depths of the type A inlay groove (21), the type B inlay groove (22), and the type C inlay groove (23) are H1, H3, and H2, respectively, where H1 < H2 < H3; the first cut edge (13) and the second cut edge (14) 4) The distances to the center of the lamination body (1) are L1 and L2 respectively, where L1 < L2; the wire embedding groove group (2) also includes a D-type wire embedding groove, and the wire embedding groove group (2) is distributed in sequence with one A-type wire embedding groove (21), two D-type wire embedding grooves, two C-type wire embedding grooves (23) and one B-type wire embedding groove (22), the groove depth of the D-type wire embedding groove is H4, where H4 ≠ H3, and H4 > H2 > H1; The distances from the bottom of the A-type embedding groove (21), the bottom of the B-type embedding groove (22), and the bottom of the C-type embedding groove (23) to the edge of the lamination body (1) are such that the difference between any two distances is less than M, and M is less than or equal to 10%.

2. The motor stator lamination according to claim 1, characterized in that: The lamination body (1) is provided with windings, which are symmetrically distributed and include a main winding and a secondary winding.

3. An electric motor, characterized in that: It includes a stator assembly, the stator assembly including motor stator laminations, the motor stator laminations being the motor stator laminations as described in any one of claims 1 to 2.

4. A compressor, characterized in that: Includes the motor described in claim 3.

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