Coil framework, stator core, motor and vehicle

Abstract

The utility model relates to a coil skeleton, stator core, motor and vehicle, the coil skeleton is an integrated injection molding piece, the coil skeleton comprises a first baffle plate and a skeleton body, the first baffle plate comprises a first baffle plate body and a lead part, the first baffle plate body is connected with the skeleton body, and the lead part is connected with the first baffle plate body. The lead portion is arranged at the end of the first baffle body in the length direction of the first baffle body and extends out of the framework body, and the structural strength of the lead portion is larger than that of the first baffle body. The coil framework is stable in structure, good in supporting effect and beneficial to simplifying the processing technology of the coil framework.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to a coil frame, a stator core, a motor, and a vehicle. Background Technology

[0002] The stator core is one of the key components of an electric motor and a major part of its magnetic circuit. To ensure insulation between the coils and the stator core, a coil bobbin is typically mounted on the stator core, and the coils are wound around the bobbin. In related technologies, the coil bobbin and stator bobbin are often assembled together by splicing, but this assembly process is relatively complex and has poor structural stability. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a coil frame that has a stable structure, good support effect, and facilitates the simplification of the coil frame's processing technology.

[0005] An embodiment of this utility model also proposes a stator core.

[0006] An embodiment of this utility model also proposes an electric motor.

[0007] An embodiment of this utility model also proposes a vehicle.

[0008] The coil frame of this utility model embodiment is an integral injection molded part. The coil frame includes a first baffle and a frame body. The first baffle includes a first baffle body and a lead wire portion. The first baffle body is connected to the frame body. The lead wire portion is disposed at the end of the first baffle body in the length direction of the first baffle body and extends out of the frame body. The structural strength of the lead wire portion is greater than the structural strength of the first baffle body.

[0009] According to the embodiments of this utility model, the coil frame is a one-piece injection molded part, which simplifies the processing technology of the coil frame compared to the "spliced ​​coil frame" solution and helps improve the overall structural stability of the coil frame. When the coil frame is wound with the coil, the first baffle body can constrain the position of the coil, and the lead wire portion can guide the coil wire to prevent displacement. Since the structural strength of the lead wire portion is greater than that of the first baffle body, the lead wire portion is less prone to deformation under external force, which helps improve the support effect of the lead wire portion.

[0010] In some embodiments, the first baffle further includes a reinforcing rib, which is disposed on the side of the lead portion away from the skeleton body.

[0011] In some embodiments, the reinforcing rib is provided with a clearance groove, which penetrates the reinforcing rib along the width direction of the first baffle.

[0012] In some embodiments, there are multiple reinforcing ribs, which are spaced apart along the width direction of the first baffle and extend along the length direction of the first baffle.

[0013] In some embodiments, the lead wire portion is provided with a wire clamping port and a wire inlet groove. The wire clamping port extends through the lead wire portion along the thickness direction of the first baffle. The wire inlet groove is located on the side of the lead wire portion facing the skeleton body. The wire inlet groove extends along the length direction of the first baffle and communicates with the wire clamping port.

[0014] In some embodiments, the outer peripheral wall of the skeleton body is provided with a winding groove, the winding groove extending along the length direction of the skeleton body; and / or, the coil skeleton includes a second baffle, the second baffle and the first baffle being respectively arranged on opposite sides of the skeleton body.

[0015] Another embodiment of the stator core of this utility model includes: a stator frame, the stator frame including a plurality of stator blocks, the plurality of stator blocks being connected sequentially along a first direction, the two ends of the stator frame along the first direction being able to be joined together to bend the stator frame into a cylindrical shape; a plurality of coil frames, the coil frames being the coil frames described in any one of the embodiments of this utility model, the plurality of coil frames being disposed one-to-one with the plurality of stator blocks, and the coil frames being injection molded to the stator blocks.

[0016] According to the embodiments of the present invention, since multiple stator blocks are connected sequentially along the first direction, the two ends of the stator frame along the first direction can be joined together to bend the stator frame into a cylindrical shape so as to process and manufacture the stator frame. Furthermore, since multiple coil frames are correspondingly arranged on multiple stator blocks and the coil frames are injection molded to connect with the stator blocks, the assembly process of the stator core can be reduced, which is beneficial to improving production efficiency.

[0017] In some embodiments, the plurality of stator blocks include a first stator block, an intermediate stator block, and a last stator block. The first stator block, the intermediate stator block, and the last stator block are connected sequentially along the first direction. The first stator block has a first weld groove on the side away from the intermediate stator block, and the last stator block has a second weld groove on the side away from the intermediate stator block. When the stator frame is formed into a cylindrical shape, the first weld groove and the second weld groove are connected.

[0018] In some embodiments, both the first weld groove and the second weld groove are located on the outer wall surface of the stator frame.

[0019] In some embodiments, a notch is provided between two adjacent stator blocks, and the gap of the notch gradually increases in the direction from the outer side to the inner side of the stator block; and / or, a protruding key is provided on one side of the stator frame along the first direction, and a groove is provided on the other side of the stator frame along the first direction, wherein the protruding key engages with the groove when the stator frame is bent into a cylindrical shape; and / or, the stator frame includes a plurality of stator laminations, which are stacked sequentially along a second direction, the second direction being orthogonal to the first direction.

[0020] The motor of this utility model includes a stator core, which is the stator core described in any one of the embodiments of this utility model. The stator core is joined at both ends along the first direction and bent into a cylindrical shape.

[0021] The motor according to the embodiments of this utility model has a stable structure and a simple assembly process, which is conducive to improving production efficiency.

[0022] The vehicle of this utility model embodiment includes the motor described in the embodiment of this utility model. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the coil frame according to an embodiment of the present invention.

[0024] Figure 2 yes Figure 1 A magnified view of A in the middle.

[0025] Figure 3 This is a partial view of the coil frame according to an embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the stator core before bending according to an embodiment of this utility model.

[0027] Figure 5 This is a cross-sectional view of the stator core before bending, according to an embodiment of this utility model.

[0028] Figure 6 yes Figure 5 A magnified view of B in the middle.

[0029] Figure 7 yes Figure 5 A magnified view of C.

[0030] Figure 8 This is a schematic diagram of the stator lamination of the stator core according to an embodiment of the present invention.

[0031] Figure 9 This is a schematic diagram of the stator core after bending according to an embodiment of the present invention.

[0032] Figure 10 This is a cross-sectional view of the stator core after bending according to an embodiment of the present invention.

[0033] Figure label:

[0034] 100. Coil frame;

[0035] 101. First baffle; 1011. First wire guide body; 1012. Lead wire part; 10121. Wire clamping port; 10122. Wire inlet groove; 1013. Reinforcing rib; 10131. Clearance groove; 1014. Overlapping platform;

[0036] 102. Second baffle; 1021. Second baffle body; 1022. Line blocking part;

[0037] 103. Skeleton body; 1031. Winding groove;

[0038] 200. Stator frame;

[0039] 201. Stator lamination; 2011. Lamination unit;

[0040] 210. Stator block;

[0041] 2101, Yoke; 21011, Positioning Groove; 2102, Tooth; 2103, Boot;

[0042] 211. First stator block; 2111. First weld groove; 2112. Raised key; 212. Middle stator block; 213. Tail stator block; 2131. Second weld groove; 2132. Groove.

[0043] 220, notch; 230, through hole. Detailed Implementation

[0044] The embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0045] The following is a reference appendix. Figures 1 to 10 This invention describes a coil frame 100, a stator core, a motor, and a vehicle according to embodiments of the present invention.

[0046] like Figures 1 to 3As shown, the coil frame 100 of this utility model embodiment is an integral injection molded part. The coil frame 100 includes a first baffle 101 and a frame body 103. The first baffle 101 includes a first baffle body 1011 and a lead wire portion 1012. The first baffle body 1011 is connected to the frame body 103. The lead wire portion 1012 is disposed at the end of the first baffle body 1011 in the length direction of the first baffle body 1011 and extends out of the frame body 103. The structural strength of the lead wire portion 1012 is greater than the structural strength of the first baffle body 1011.

[0047] According to the embodiment of this utility model, the coil frame 100 is an integral injection molded part. Compared with the "spliced ​​coil frame 100" solution, this simplifies the processing technology of the coil frame 100 and improves the overall structural stability of the coil frame 100. When the coil frame 100 is wound with a coil, the first baffle body 1011 can constrain the position of the coil, and the lead wire portion 1012 can guide the coil wire to prevent the wire from shifting. Since the structural strength of the lead wire portion 1012 is greater than that of the first baffle body 1011, the lead wire portion 1012 is not easily deformed when subjected to external force, which helps to improve the support effect of the lead wire portion 1012.

[0048] It is understandable that the structural strength of the lead wire portion 1012 is greater than that of the first baffle body 1011, that is, the bending resistance (the ability to resist deformation) and compressive strength of the lead wire portion 1012 are stronger than those of the first baffle body 1011.

[0049] For example, "the structural strength of the lead portion 1012 is greater than the structural strength of the first baffle body 1011" can be achieved through at least the following:

[0050] (1) The thickness of the lead wire portion 1012 is greater than the thickness of the first baffle body 1011.

[0051] (2) The number of reinforcing structures (e.g., reinforcing ribs 1013) provided inside or on the surface of the lead wire portion 1012 is greater (more dense) than the number of reinforcing structures (e.g., reinforcing ribs 1013) provided inside or on the surface of the first baffle body 1011.

[0052] Optionally, such as Figure 2As shown, the first baffle 101 also includes a reinforcing rib 1013, which is located on the side of the lead portion 1012 away from the frame body 103. It is understood that the reinforcing rib 1013 can structurally strengthen the position of the lead portion 1012 to improve its resistance to deformation and compression. Since the reinforcing rib 1013 is located on the side of the lead portion 1012 away from the frame body 103, interference with the winding of the coil frame 100 can be avoided.

[0053] like Figure 2 As shown, the reinforcing rib 1013 is provided with a clearance groove 10131, which is along the width direction of the first baffle 101 (e.g., Figure 2 The reinforcing rib 1013 is penetrated in the X direction. It is understood that the clearance groove 10131 opens to the side away from the skeleton body 103, so that the coil wire on the outside of the lead part 1012 (the side of the lead part 1012 away from the skeleton body 103) can fit into the clearance groove 10131, so that the coil is wound more regularly.

[0054] For example, there are multiple reinforcing ribs 1013, and the multiple reinforcing ribs 1013 are along the width direction of the first baffle 101 (e.g., Figure 2 The reinforcing ribs 1013 are arranged at intervals along the X direction of the first baffle 101 (e.g., along the X direction). Figure 2 The reinforcing ribs 1013 extend along the length of the first baffle 101, which can further improve the compressive strength and support of the lead portion 1012. In addition, the multiple reinforcing ribs 1013 can strengthen the overall structure of the lead portion 1012. Compared with the solution of thickening the lead portion 1012 as a whole, the weight of the coil frame 100 can be reduced and materials can be saved.

[0055] Optionally, such as Figure 3 As shown, the lead wire portion 1012 is provided with a wire clamping port 10121 and a wire inlet groove 10122. The wire clamping port 10121 is along the thickness direction of the first baffle 101 (e.g., ...). Figure 2 The lead wire (in the Y direction) passes through the lead portion 1012, and the coil wire can be introduced (exited) into the frame body 103 through the wire clamping port 10121. The wire inlet groove 10122 is provided on the side of the lead portion 1012 facing the frame body 103. The wire inlet groove 10122 extends along the length direction of the first baffle 101 and communicates with the wire clamping port 10121. It can be understood that the wire inlet groove 10122 is provided inside the lead portion 1012, and the wire that can be introduced into the frame body 103 can be fitted into the wire inlet groove 10122 to avoid interference of this section of wire with the coil winding on the frame body 103 during winding.

[0056] For example, such as Figure 3As shown, the wire clamping port 10121 can be an L-shaped opening. The wire clamping port 10121 can fix the inlet and outlet wires of the coil to avoid the problem of the coil becoming loose, and can facilitate subsequent assembly work.

[0057] Optionally, the outer peripheral wall of the bobbin body 103 is provided with a winding groove 1031, which extends along the length of the bobbin body 103. It is understood that the wire located in the inner coil can be wound on the winding groove 1031, which can make the coil winding neat and improve the slot fill factor of the coil bobbin 100.

[0058] For example, the groove depth of the winding groove 1031 is about 1 / 3 of the diameter of the coil wire, which can improve the combing effect of the coil wire and make the winding of the coil convenient.

[0059] like Figure 2 As shown, the coil frame 100 includes a second baffle 102, and the second baffle 102 and the first baffle 101 are respectively arranged on opposite sides of the frame body 103. It can be understood that the first baffle 101 and the second baffle 102 are respectively arranged on both sides of the frame body 103 in the Y direction to constrain the position of the coil and ensure the insulation effect of the coil frame 100.

[0060] like Figure 2 As shown, the first baffle 101 also includes a lap platform 1014, which is located between the lead wire portion 1012 and the first baffle body 1011 and protrudes toward the side away from the frame body 103. The lap platform 1014 can overlap with the stator frame 200 to improve the reliability of the connection between the coil frame 100 and the stator frame 200.

[0061] like Figures 4 to 7 As shown, another embodiment of the stator core of this utility model includes: a stator frame 200 and a plurality of coil frames 100. The stator frame 200 includes a plurality of stator blocks 210, and the plurality of stator blocks 210 are arranged along a first direction (e.g., Figure 5 The stator frame 200 is connected in sequence along the X direction. The two ends of the stator frame 200 along the first direction can be connected to bend the stator frame 200 into a cylindrical shape. The coil frame 100 is the coil frame 100 of this utility model. Multiple coil frames 100 are arranged one-to-one on multiple stator blocks 210, and the coil frames 100 and stator blocks 210 are injection molded together.

[0062] According to the embodiment of the present invention, since multiple stator blocks 210 are connected sequentially along the first direction, the two ends of the stator frame 200 along the first direction can be joined together to bend the stator frame 200 into a cylindrical shape so as to process and manufacture the stator frame 200. Furthermore, since multiple coil frames 100 are correspondingly arranged on multiple stator blocks 210, and the coil frames 100 are injection molded to the stator blocks 210, the assembly process of the stator core can be reduced, which is beneficial to improving production efficiency.

[0063] Understandably, before the stator frame 200 is bent into a cylindrical shape, the straight-line stator frame 200 can be injection molded, and multiple coil frames 100 are injection molded one-to-one on the stator block 210, which can facilitate the processing and manufacturing of the stator core and reduce the assembly and manufacturing cost of the stator core.

[0064] like Figure 8 As shown, the stator frame 200 includes multiple stator laminations 201, which are stacked along the Z-axis. Each stator lamination 201 includes multiple lamination units 2011, which are sequentially connected along the X-axis to form multiple stator blocks 210. In other words, the stator block 210 includes multiple lamination units 2011, which are stacked sequentially along a second direction (Z-axis), orthogonal to the first direction. Because the multiple lamination units 2011 extend in a straight line, compared to the conventional whole-circle stamping method, the straight-line stamping of silicon steel sheets (lamination units 2011) can improve the utilization rate of silicon steel sheets and reduce production costs.

[0065] like Figure 6 and Figure 7 As shown, the stator block 210 includes a connected yoke 2101, a tooth 2102, and a shoe 2103, with the yokes 2101 of adjacent stator blocks 210 connected. The coil frame 100 includes a first baffle 101, a frame body 103, and a second baffle 102. The first baffle 101 is located on the side of the yoke 2101 facing the shoe 2103, and the second baffle 102 is located on the side of the shoe 2103 facing the yoke 2101. The frame body 103 is located on the outer wall surface of the tooth 2102 and is connected to the first baffle 101 and the second baffle 102. This improves the insulation effect of the coil frame 100 and provides better support for the coil.

[0066] like Figure 6 As shown, each stator block 210 has a positioning groove 21011 on the outer wall surface of the yoke 2101. The positioning groove 21011 extends along the Z direction of the stator core to assist in positioning during stator core installation.

[0067] Optionally, such as Figures 5 to 7As shown, the multiple stator blocks 210 include a first stator block 211, a middle stator block 212, and a last stator block 213. The first stator block 211, the middle stator block 212, and the last stator block 213 are connected sequentially along a first direction. The first stator block 211 has a first weld groove 2111 on the side opposite to the middle stator block 212, and the last stator block 213 has a second weld groove 2131 on the side opposite to the middle stator block 212. When the stator frame 200 is rolled into a cylindrical shape, the first weld groove 2111 and the second weld groove 2131 are connected. It can be understood that when the stator core is rolled into a cylindrical shape and welded, solder can be filled at the joint of the stator frame 200 at the positions of the first weld groove 2111 and the second weld groove 2131 to weld the joint. By providing a first weld groove 2111 and a second weld groove 2131, the coil frame 100 of this utility model can make the welded stator frame 200 more regular, thereby reducing or eliminating the time required for subsequent grinding of the weld position.

[0068] For example, such as Figure 6 , Figure 7 and Figure 10 As shown, the first weld groove 2111 and the second weld groove 2131 are both located on the outer wall surface of the stator frame 200, which facilitates the welding of the stator core after it has been rounded by automated equipment and makes the welding process convenient.

[0069] Optionally, a notch 220 is provided between two adjacent stator blocks 210, and the gap of the notch 220 gradually increases from the outer side to the inner side of the stator block 210. For example, before the stator frame 200 turns, the shape of the notch 220 is generally V-shaped, and the tip of the V-shape has a through hole 230 to reduce stress concentration. The angle of the V-shaped notch 220 can be designed according to the number of stator blocks 210. For example, before the stator frame 200 turns, the angle of the V-shaped notch 220 is θ, where θ = 2π / n, and n is the number of stator blocks 210. After the stator frame 200 turns, the angle of the V-shaped notch 220 approaches 0°.

[0070] like Figure 6 and Figure 7 As shown, the stator frame 200 has a protruding key 2112 on one side along the first direction and a groove 2132 on the other side along the first direction. When the stator frame 200 is bent into a cylindrical shape, the protruding key 2112 and the groove 2132 cooperate, thereby pre-fixing the stator frame 200 after it is rounded and improving the structural strength of the stator frame 200 after it is rounded.

[0071] like Figure 4 and Figure 9As shown, the motor of this embodiment includes a stator core, which is the stator core of this invention. The two ends of the stator core are joined together along a first direction and bent into a cylindrical shape. The motor of this embodiment has a stable structure, simple assembly process, and is conducive to improving production efficiency.

[0072] The vehicle of this utility model embodiment includes the motor of this utility model. The technical advantages of the vehicle of this utility model embodiment are the same as the technical advantages of the motor or stator core of the above embodiments, and will not be repeated here.

[0073] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0074] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0075] 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, an electrical connection, or a connection that allows communication between them; 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, 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.

[0076] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0077] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0078] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A coil frame (100), characterized in that, The coil frame (100) is an integral injection molded part. The coil frame (100) includes a first baffle (101) and a frame body (103). The first baffle (101) includes a first baffle body (1011) and a lead wire portion (1012). The first baffle body (1011) is connected to the frame body (103). The lead wire portion (1012) is located at the end of the first baffle body (1011) along the length direction of the first baffle body (1011) and extends out of the frame body (103). The structural strength of the lead wire portion (1012) is greater than the structural strength of the first baffle body (1011).

2. The coil frame (100) according to claim 1, characterized in that, The first baffle (101) also includes a reinforcing rib (1013), which is located on the side of the lead wire portion (1012) away from the skeleton body (103).

3. The coil frame (100) according to claim 2, characterized in that, The reinforcing rib (1013) is provided with a relief groove (10131), which penetrates the reinforcing rib (1013) along the width direction of the first baffle (101).

4. The coil frame (100) according to claim 2, characterized in that, There are multiple reinforcing ribs (1013), which are spaced apart along the width direction of the first baffle (101) and extend along the length direction of the first baffle (101).

5. The coil frame (100) according to claim 1, characterized in that, The lead wire portion (1012) is provided with a wire clamping port (10121) and a wire inlet groove (10122). The wire clamping port (10121) extends through the lead wire portion (1012) along the thickness direction of the first baffle (101). The wire inlet groove (10122) is located on the side of the lead wire portion (1012) facing the skeleton body (103). The wire inlet groove (10122) extends along the length direction of the first baffle (101) and communicates with the wire clamping port (10121).

6. The coil frame (100) according to claim 1, characterized in that, The outer peripheral wall of the skeleton body (103) is provided with a winding groove (1031), which extends along the length direction of the skeleton body (103). And / or, the coil frame (100) includes a second baffle (102), the second baffle (102) and the first baffle (101) being arranged on opposite sides of the frame body (103).

7. A stator core, characterized in that, include: A stator frame (200) includes a plurality of stator blocks (210), which are connected sequentially along a first direction. The two ends of the stator frame (200) along the first direction can be joined together to bend the stator frame (200) into a cylindrical shape. Multiple coil frames (100) are provided, wherein the coil frames (100) are any one of the coil frames (100) according to claims 1-6, and the multiple coil frames (100) are disposed one-to-one on the multiple stator blocks (210), and the coil frames (100) are injection molded to the stator blocks (210).

8. The stator core according to claim 7, characterized in that, The plurality of stator blocks (210) include a first stator block (211), a middle stator block (212), and a last stator block (213). The first stator block (211), the middle stator block (212), and the last stator block (213) are connected sequentially along the first direction. The first stator block (211) has a first weld groove (2111) on the side away from the middle stator block (212), and the last stator block (213) has a second weld groove (2131) on the side away from the middle stator block (212). When the stator frame (200) is formed into a cylindrical shape, the first weld groove (2111) and the second weld groove (2131) are connected.

9. The stator core according to claim 8, characterized in that, The first weld groove (2111) and the second weld groove (2131) are both located on the outer wall surface of the stator frame (200).

10. The stator core according to claim 7, characterized in that, A notch (220) is provided between two adjacent stator blocks (210), and the gap of the notch (220) gradually increases in the direction from the outer side of the stator block (210) to the inner side of the stator block (210); And / or, the stator frame (200) is provided with a protruding key (2112) on one side along the first direction, and the stator frame (200) is provided with a groove (2132) on the other side along the first direction. When the stator frame (200) is bent into a cylindrical shape, the protruding key (2112) cooperates with the groove (2132). And / or, the stator frame (200) includes a plurality of stator laminations (201), which are stacked sequentially along a second direction orthogonal to the first direction.

11. An electric motor, characterized in that, Includes a stator core, wherein the stator core is the stator core according to any one of claims 7-10, wherein the stator core is joined at both ends along the first direction and bent into a cylindrical shape.

12. A vehicle, characterized in that, Includes the motor as described in claim 11.

Images