Stator assembly and electric machine

Abstract

The application discloses a kind of stator assembly and motor, stator assembly includes: stator component, stator component includes sequentially interconnected multiple stator sub-blocks, multiple stator sub-blocks are formed into straight bar structure;Positioning support, multiple stator sub-blocks are bent inward along its junction to make multiple stator sub-blocks form annular structure around positioning support, multiple stator sub-blocks are arranged along the circumferential direction of positioning support, and the two ends of the length direction of stator component are interconnected.According to the stator assembly of the application, the winding efficiency and production reliability can be improved, and the production yield can be improved, and the production cost can be reduced.

Description

Technical Field

[0001] This invention relates to the field of electric motor technology, and more specifically, to a stator assembly and an electric motor. Background Technology

[0002] In some related technologies, winding the stator assembly is difficult, resulting in low production efficiency; in other related technologies, the stator assembly is prone to large errors during processing, increasing production costs. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a stator assembly that can improve winding efficiency and production reliability, increase production yield, and reduce production costs.

[0004] Another object of the present invention is to provide an electric motor having the above-described stator assembly.

[0005] According to an embodiment of the present invention, a stator assembly includes: a stator component, the stator component including a plurality of stator blocks connected sequentially to each other, the plurality of stator blocks being formed into a straight strip structure; a positioning bracket, the plurality of stator blocks being bent inward along their connection points to form a ring structure around the positioning bracket, the plurality of stator blocks being arranged along the circumferential direction of the positioning bracket, and the two ends of the stator assembly being connected to each other in the length direction.

[0006] According to an embodiment of the present invention, the stator assembly includes a plurality of stator blocks connected sequentially to each other. The plurality of stator blocks are formed into a straight strip structure, which facilitates winding onto the stator blocks and improves winding efficiency and production reliability. By bending the plurality of stator blocks inward along their connection points to form a ring structure around the positioning bracket, the plurality of stator blocks are arranged in the circumferential direction of the positioning bracket, so that the stator bracket can position the plurality of stator blocks, ensuring that the stator assembly is stably rounded during the bending process, guaranteeing the roundness requirements of the arrangement of the plurality of stator blocks, facilitating subsequent processing of the stator assembly, improving the production qualification rate of the stator assembly, and reducing production costs.

[0007] In addition, the stator assembly according to the above embodiments of the present invention may also have the following additional technical features:

[0008] According to some embodiments of the present invention, a stator assembly is provided at one end of the stator assembly along its length direction, and at the other end is provided a connecting mating part that connects to the connecting part.

[0009] According to some embodiments of the present invention, the positioning bracket includes: a radial positioning portion, the stator assembly surrounding the radial positioning portion; and an axial positioning portion, the axial positioning portion being disposed on the outer peripheral wall of the radial positioning portion and extending along the circumferential direction of the radial positioning portion, the axial positioning portion and the stator assembly being arranged in the axial direction of the radial positioning portion, and one end of a plurality of stator segments along the axial direction of the stator assembly abutting against one end of the axial direction of the axial positioning portion.

[0010] According to some embodiments of the present invention, the radial positioning portion is provided with a plurality of first grooves spaced apart along the circumferential direction of the radial positioning portion, each first groove extending along the axial direction of the radial positioning portion; and / or, the side of the axial positioning portion facing the stator assembly is provided with a second groove extending circumferentially along the axial positioning portion; and / or, the side of the axial positioning portion facing the stator assembly is provided with a plurality of third grooves spaced apart along the circumferential direction of the axial positioning portion, each third groove extending along the radial direction of the axial positioning portion.

[0011] According to some embodiments of the present invention, when the positioning bracket has the first groove and the second groove, the first groove and the second groove are in communication with each other.

[0012] According to some embodiments of the present invention, when the positioning bracket has a second groove and a third groove, the second groove and the third groove are in communication with each other.

[0013] According to some embodiments of the present invention, the positioning bracket is provided with a bearing cavity for accommodating the bearing.

[0014] According to some embodiments of the present invention, the bearing cavity includes: a first chamber and a second chamber, the first chamber and the second chamber being spaced apart along the axial direction of the positioning bracket, and both the first chamber and the second chamber being provided with the bearing; and a through hole, the through hole being disposed between the first chamber and the second chamber and communicating with the first chamber and the second chamber.

[0015] According to some embodiments of the present invention, the axis of the first chamber and the axis of the second chamber both coincide with the central axis of the positioning bracket.

[0016] According to some embodiments of the present invention, the positioning bracket is a non-magnetic component.

[0017] According to some embodiments of the present invention, each of the stator blocks includes a block core and an injection molded part, and the plurality of block cores and the plurality of injection molded parts are integrally injection molded.

[0018] The motor according to an embodiment of the present invention includes the stator assembly described in the embodiment of the present invention.

[0019] According to an embodiment of the present invention, the motor includes a stator assembly comprising multiple stator blocks connected sequentially to each other. These stator blocks are formed into straight strip structures, facilitating winding and improving winding efficiency and production reliability. By bending the multiple stator blocks inwards along their joints to form a ring structure around a positioning bracket, and arranging the multiple stator blocks circumferentially along the positioning bracket, the stator bracket can position the multiple stator blocks, ensuring the stator assembly remains stable and round during bending, guaranteeing the roundness requirements of the multiple stator blocks, facilitating subsequent processing of the stator assembly, improving the production qualification rate of the stator assembly, and reducing production costs.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the stator assembly from one angle according to an embodiment of the present invention;

[0023] Figure 2 This is a structural schematic diagram of the stator assembly from another angle according to an embodiment of the present invention;

[0024] Figure 3 This is an exploded view of the stator assembly according to an embodiment of the present invention;

[0025] Figure 4 This is a structural schematic diagram of the positioning bracket of the stator assembly according to an embodiment of the present invention at one angle.

[0026] Figure 5 This is a structural schematic diagram of the positioning bracket of the stator assembly according to an embodiment of the present invention from another angle;

[0027] Figure 6 This is a cross-sectional view of the positioning bracket of the stator assembly according to an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of a stator assembly according to an embodiment of the present invention;

[0029] Figure 8 This is an enlarged structural schematic diagram of one end of the stator assembly in the length direction of the stator component according to an embodiment of the present invention;

[0030] Figure 9This is an enlarged structural schematic diagram of the other end of the stator assembly in the length direction of the stator component according to an embodiment of the present invention.

[0031] Figure label:

[0032] 100. Stator assembly;

[0033] 10. Stator assembly; 11. Stator segment; 12. Connecting part; 13. Connecting mating part; 111. Segmented iron core; 112. Injection molded part;

[0034] 20. Positioning bracket; 21. Radial positioning part; 22. Axial positioning part; 23. Bearing cavity; 24. Extension section; 231. First chamber; 232. Second chamber; 233. Through hole;

[0035] 31. First groove; 32. Second groove; 33. Third groove;

[0036] 40. Injection-molded housing; 41. First positioning hole; 42. Second positioning hole. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] In the description of this invention, it should be understood that 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 invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0039] In the description of this invention, "first feature" and "second feature" may include one or more of the features, "multiple" means two or more, "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them, and "above," "over," and "on top" the second feature may include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0040] The stator assembly 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0041] Reference Figures 1-3 As shown, the stator assembly 100 according to an embodiment of the present invention may include: stator component 10.

[0042] Specifically, the stator assembly 10 includes multiple (two or more) stator blocks 11, which are connected to each other in sequence. The multiple stator blocks 11 can be formed into a straight strip structure, which facilitates winding onto the stator blocks 11 and helps to improve winding efficiency and production reliability.

[0043] In addition, such as Figure 3 As shown, the stator assembly 100 also includes a positioning bracket 20. Multiple stator segments 11 are bent inwards along their connection points, forming a ring structure around the positioning bracket 20. The multiple stator segments 11 are arranged circumferentially along the positioning bracket 20, and the two ends of the stator assembly 10 are connected to each other along its length, satisfying the shape and connection requirements of the stator assembly 10. Simultaneously, the stator bracket facilitates the positioning of the multiple stator segments 11, ensuring the stator assembly 10 remains stable and round during bending, guaranteeing the roundness requirements of the multiple stator segments 11 arrangement, and ensuring the fixed positions of the multiple stator segments 11. This facilitates subsequent processing of the stator assembly 10, improving the production qualification rate of the stator assembly 100 and reducing production costs.

[0044] For example, in some embodiments, such as Figures 1-3 As shown, the stator assembly 100 includes an injection-molded housing 40. The injection-molded housing 40 and the stator assembly 10 are integrally injection-molded, forming the stator assembly 100 into a molded stator assembly. This improves the structural strength of the stator assembly 100, reduces operating noise, and the integral injection molding of the stator assembly 100 effectively suppresses vibration. It also exhibits good corrosion resistance, moisture resistance, and high-temperature resistance. Furthermore, during the integral injection molding of the injection-molded housing 40 and the stator assembly 10, the positioning bracket 20 positions the stator assembly 10, ensuring the positioning of the multiple stator segments 11. This prevents the stator assembly 10 from being deformed due to impact, ensuring that the multiple stator segments 11 are stably integrated into a single unit and guaranteeing reliable injection molding.

[0045] According to an embodiment of the present invention, the stator assembly 100 includes a plurality of stator blocks 11 connected sequentially to each other. The plurality of stator blocks 11 are formed into straight strip structures, which facilitates winding onto the stator blocks 11 and improves winding efficiency and production reliability. By bending the plurality of stator blocks 11 inward along their connection points, the plurality of stator blocks 11 are formed into a ring structure around the positioning bracket 20. The plurality of stator blocks 11 are arranged in the circumferential direction of the positioning bracket 20, so that the stator bracket can position the plurality of stator blocks 11, ensuring that the stator assembly 10 is stably rounded during the bending process, ensuring the roundness requirements of the arrangement of the plurality of stator blocks 11, facilitating subsequent processing of the stator assembly 10, improving the production qualification rate of the stator assembly 100, and reducing production costs.

[0046] In some embodiments of the present invention, such as Figures 7-9 As shown, one end of the stator assembly 10 along its length is provided with a connecting portion 12, and the other end of the stator assembly 10 along its length is provided with a connecting mating portion 13. Thus, by connecting the connecting mating portion 13 and the connecting portion 12, the two ends of the stator assembly 10 along its length can be connected to each other, so that multiple stator blocks 11 can form a pre-formed ring structure. This facilitates the positioning of the stator assembly 10 by the positioning bracket 20, forming the ring structure required by the stator assembly 10, and ensures reliable connection.

[0047] In embodiments of the present invention, the specific structures of the connecting part 12 and the connecting mating part 13 can be set according to actual conditions.

[0048] For example, in some embodiments, such as Figure 8 and Figure 9 As shown, both the connecting part 12 and the connecting mating part 13 are formed as hooks, and the two hooks face opposite directions, which facilitates the connection between the two hooks and realizes the connection between the two ends of the stator assembly 10 in the length direction. The structure is simple, easy to process and manufacture, and helps to reduce production costs.

[0049] According to some embodiments of the present invention, such as Figures 3-6 As shown, the positioning bracket 20 includes a radial positioning part 21, and the stator assembly 10 surrounds the radial positioning part 21. The radial positioning part 21 can radially position multiple stator blocks 11 to ensure that the stator assembly 10 is stably rounded during the bending process and to ensure the roundness requirements of the multiple stator blocks 11.

[0050] In addition, such as Figures 3-6 As shown, the positioning bracket 20 also includes an axial positioning portion 22, which is disposed on the outer peripheral wall of the radial positioning portion 21 and extends along the circumferential direction of the radial positioning portion 21. The axial positioning portion 22 and the stator assembly 10 are located in the axial direction of the radial positioning portion 21 (e.g., in the axial direction). Figure 3Arranged in the front-to-back direction shown, multiple stator blocks 11 are located at one end (e.g., along the axial direction of the stator assembly 10). Figure 3 The front end shown) and one end of the axial positioning part 22 in the axial direction (e.g., the front end) and the axial positioning part 22 in the axial direction (e.g., the front end shown) Figure 3 The rear end shown in the figure abuts against each other, so that the stator assembly 10 can be positioned in the axial direction by the axial positioning part 22, so as to avoid the stator assembly 10 from moving in the axial direction and to ensure the flatness requirements of the multiple stator blocks 11 in the axial direction, ensuring reliable positioning, facilitating subsequent processing of the stator assembly 10, improving the production qualification rate of the stator assembly 100, and reducing production costs.

[0051] In some embodiments of the stator assembly 100 including the injection-molded housing 40, such as Figure 1 and Figure 3 As shown, a first positioning hole 41 is formed at the location opposite to the axial positioning part 22 in the injection molded housing 40. Positioning at the first positioning hole 41 ensures accurate positioning of the positioning bracket 20, thereby ensuring accurate positioning of the stator assembly 10. This facilitates the integral injection molding of the injection molded housing 40 and the stator assembly 10, ensuring reliable processing of the stator assembly 100 and improving the production qualification rate of the stator assembly 100. For example, positioning at the first positioning hole 41 can be achieved using an ejector pin.

[0052] In some specific embodiments, such as Figure 1 and Figure 3 As shown, there are multiple first positioning holes 41 (two or more). The multiple first positioning holes 41 are spaced apart along the circumferential direction of the axial positioning part 22. The multiple first positioning holes 41 can ensure that multiple different positions of the positioning bracket 20 are positioned, ensuring that the positioning of the positioning bracket 20 is reliable and facilitating the processing of the stator assembly 10.

[0053] In some embodiments, such as Figure 2 As shown, a second positioning hole 42 is formed on the injection-molded housing 40 opposite to the stator assembly 10, and the second positioning hole 42 is located on the opposite side of the first positioning hole 41. Positioning at the second positioning hole 42 ensures accurate positioning of the stator assembly 10. Furthermore, by simultaneously positioning and clamping the stator assembly 10 and the axial positioning part 22 through the first positioning hole 41 and the second positioning hole 42, the position of the stator assembly 10 can be restricted, ensuring that the positioning position of the stator assembly 10 is fixed. This effectively prevents the stator assembly 10 from moving during processing, ensuring reliable processing of the stator assembly 100 and improving production efficiency. For example, positioning at the second positioning hole 42 can be achieved using an ejector pin.

[0054] In some specific embodiments, such as Figures 1-3As shown, there are multiple second positioning holes 42 (two or more). The multiple second positioning holes 42 are spaced apart along the circumferential direction of the stator assembly 10. The multiple second positioning holes 42 can ensure that the positioning bracket 20 is positioned at multiple different positions, ensuring reliable positioning of the stator assembly 10 and facilitating the processing of the stator assembly 100.

[0055] It should be noted that, for ease of description, the terms "front" and "back" in this invention are based on the orientation relationships shown in the accompanying drawings, and are not intended to limit the orientation in actual application.

[0056] In some embodiments, such as Figures 4-6 As shown, the radial positioning part 21 is provided with a plurality of (two or more) first grooves 31. The plurality of first grooves 31 are spaced apart along the circumferential direction of the radial positioning part 21, and each first groove 31 extends along the axial direction of the radial positioning part 21. During the injection molding of the stator assembly 100, air can be discharged through the plurality of first grooves 31, improving the venting performance of the stator assembly 100 and having a good function of venting overflow. This can reduce air holes and material shortages between the radial positioning part 21 and the stator assembly 10, and achieve the integrity of the plastic seal of the stator assembly 100.

[0057] In some embodiments, such as Figure 5 and Figure 6 As shown, the axial positioning part 22 faces the stator assembly 10 on the side (e.g.) Figure 3 The rear side shown is provided with a second groove 32, which extends circumferentially along the axial positioning part 22. During the injection molding of the stator assembly 100, air can be discharged through the second groove 32, improving the venting performance of the stator assembly 100. It has a good function of venting and overflowing material, which can reduce air holes and material shortages between the axial positioning part 22 and the stator assembly 10, and achieve the integrity of the plastic seal of the stator assembly 100.

[0058] In some embodiments, such as Figure 5 and Figure 6 As shown, the axial positioning part 22 has a plurality of (two or more) third grooves 33 on the side facing the stator assembly 10. The plurality of third grooves 33 are spaced apart along the circumferential direction of the axial positioning part 22, and each third groove 33 extends along the radial direction of the axial positioning part 22. During the injection molding of the stator assembly 100, air can be discharged through the plurality of third grooves 33, improving the venting performance of the stator assembly 100 and having a good function of venting overflow. This can reduce air holes and material shortages between the axial positioning part 22 and the stator assembly 100, and achieve the integrity of the plastic seal of the stator assembly 100.

[0059] In some embodiments, such as Figures 4-6As shown, the radial positioning part 21 is provided with a plurality of first grooves 31, which are spaced apart along the circumferential direction of the radial positioning part 21. Each first groove 31 extends along the axial direction of the radial positioning part 21. The axial positioning part 22, facing the stator assembly 10, is provided with a second groove 32 and a plurality of third grooves 33. The second groove 32 extends circumferentially along the axial positioning part 22, and the plurality of third grooves 33 are spaced apart along the circumferential direction of the axial positioning part 22. Each third groove 33 extends radially along the axial positioning part 22. During the injection molding of the stator assembly 100, the first grooves 31, second grooves 32, and third grooves 33 enable better air discharge, improve the venting performance of the stator assembly 100, and provide good venting and overflow functions. This reduces problems such as air holes and material shortages between the positioning bracket 20 and the stator assembly 10, and ensures the integrity of the stator assembly 100's molding.

[0060] In some embodiments of the present invention, such as Figure 5 and Figure 6 As shown, when the positioning bracket 20 has a first groove 31 and a second groove 32, the first groove 31 and the second groove 32 are interconnected, allowing air to be discharged through the first groove 31 and the second groove 32, making the venting of the stator assembly 100 more uniform during injection molding and achieving a better injection molding effect.

[0061] According to some embodiments of the present invention, such as Figure 5 and Figure 6 As shown, when the positioning bracket 20 has a second groove 32 and a third groove 33, the second groove 32 and the third groove 33 are interconnected, allowing air to be discharged through the second groove 32 and the third groove 33, making the venting of the stator assembly 100 more uniform during injection molding and having a better injection molding effect.

[0062] In some specific embodiments, such as Figure 5 and Figure 6 As shown, when the positioning bracket 20 has a first groove 31, a second groove 32 and a third groove 33, the first groove 31 and the second groove 32 are interconnected, and the second groove 32 and the third groove 33 are interconnected, which allows air to be discharged through the first groove 31, the second groove 32 and the third groove 33, making the venting more uniform during the injection molding of the stator assembly 100 and having a better injection molding effect.

[0063] In some embodiments of the present invention, such as Figures 3-6 As shown, the positioning bracket 20 has a bearing cavity 23 inside, which can accommodate the bearing and meet the requirements for bearing placement. Thus, the positioning bracket 20 can be used to place the bearing, avoiding the need to process the bearing cavity on the stator assembly 100 later, which helps to reduce manufacturing difficulty and improve production efficiency.

[0064] In some embodiments, a bearing can be placed in the bearing cavity 23 to meet the bearing placement requirements.

[0065] In some examples, such as Figures 4-6 As shown, the bearing cavity 23 may include a first cavity 231 and a second cavity 232. The first cavity 231 and the second cavity 232 are spaced apart along the axial direction of the positioning bracket 20. Both the first cavity 231 and the second cavity 232 may be equipped with bearings, which can meet the placement requirements of the two bearings.

[0066] In addition, such as Figures 4-6 As shown, the bearing cavity 23 also includes a through hole 233, which is located between the first cavity 231 and the second cavity 232 and is connected to the first cavity 231 and the second cavity 232. This allows the first cavity 231 and the second cavity 232 to be connected, facilitating the installation of other structures (such as the rotor's main shaft) in the bearing cavity.

[0067] In some embodiments, such as Figures 4-6 As shown, the diameters of the first chamber 231 and the second chamber 232 are both larger than the diameter of the through hole 233, so that the bottom wall of the first chamber 231 can limit the bearing located in the first chamber 231, and the bottom wall of the second chamber 232 can limit the bearing located in the second chamber 232, ensuring that the bearing is reliably fixed.

[0068] In some embodiments of the positioning bracket 20, which includes a radial positioning portion 21 and an axial positioning portion 22, such as Figure 3 , Figure 4 and Figure 6 As shown, the axial positioning part 22 is provided at one end of the radial positioning part 21. The end of the axial positioning part 22 away from the radial positioning part 21 is provided with an extension section 24. The extension section 24 extends in the circumferential direction of the axial positioning part 22 to form a ring, and the inner wall of the extension section 24 is flush with the inner wall of the second chamber 232. The extension section can extend the accommodating space in the second chamber 232 to meet the height requirements for bearing placement.

[0069] In some embodiments, the extension length and thickness of the extension segment 24 can be set according to actual conditions to meet different usage requirements.

[0070] According to some embodiments of the present invention, such as Figure 6 As shown, the axis of the first chamber 231 and the axis of the second chamber 232 both coincide with the central axis of the positioning bracket 20. This facilitates the achievement of the coaxiality requirement between the stator assembly 10 and the bearing, making assembly more convenient, meeting the required precision requirements, and improving the assembly precision of the stator assembly 100.

[0071] In some embodiments of the present invention, the positioning bracket 20 can be a non-magnetic component. The non-magnetic positioning bracket 20 can meet the positioning requirements of the stator assembly 10, has a certain structural strength, ensures reliable positioning of the stator assembly 10, and helps to reduce production costs and ensure the reliable operation of the stator assembly 100. For example, the positioning bracket 20 can be a plastic component.

[0072] According to some embodiments of the present invention, such as Figure 7 As shown, each stator block 11 includes a block core 111 and an injection molded part 112. Multiple block cores 111 and multiple injection molded parts 112 are integrally injection molded, resulting in a simple structure that is easy to manufacture and ensures strong connection between the block cores 111 and the injection molded parts 112. This facilitates connection between the block cores 111 and the injection molded parts 112, reducing assembly steps. Simultaneously, it facilitates the interconnection of multiple stator blocks 11, ensuring reliable connections. This allows for free linear and circumferential arrangement of multiple stator blocks 11, facilitating winding onto each stator block 11, improving winding efficiency and production reliability, and ultimately increasing production efficiency.

[0073] The stator assembly 100 according to a specific embodiment of the present invention is described in detail below with reference to the accompanying drawings. It is to be understood that the following description is merely illustrative and should not be construed as limiting the invention.

[0074] Reference Figures 1-9 As shown, the stator assembly 100 includes a stator component 10 and a positioning bracket 20. The stator component 10 includes a plurality of stator blocks 11 connected sequentially to each other. The plurality of stator blocks 11 are formed into a straight strip structure. Each stator block 11 includes a block core 111 and a multiple injection molded part 112. The plurality of block cores 111 and multiple injection molded parts 112 are integrally injection molded. One end of the stator component 10 in the length direction is provided with a connecting part 12, and the other end of the stator component 10 in the length direction is provided with a connecting mating part 13.

[0075] Among them, such as Figures 4-6As shown, the positioning bracket 20 is a non-magnetic component. The positioning bracket 20 includes a radial positioning part 21 and an axial positioning part 22. The axial positioning part 22 is disposed on the outer peripheral wall of the radial positioning part 21 and extends along the circumferential direction of the radial positioning part 21. The radial positioning part 21 is provided with a plurality of first grooves 31, which are spaced apart along the circumferential direction of the radial positioning part 21. Each first groove 31 extends along the axial direction of the radial positioning part 21. The rear side of the axial positioning part 22 is provided with a second groove 32 and a plurality of third grooves 33. The second groove 32 extends circumferentially along the axial direction of the axial positioning part 22, and the plurality of third grooves 33 are spaced apart along the circumferential direction of the axial positioning part 22. Each third groove 33 extends along the radial direction of the axial positioning part 22. The first grooves 31 and the second grooves 32 are interconnected, as are the second grooves 32 and the third grooves 33. The positioning bracket 20 has a bearing cavity 23, which includes a first chamber 231, a second chamber 232, and a through hole 233. The first chamber 231 and the second chamber 232 are spaced apart along the front-rear direction of the positioning bracket 20. Both the first chamber 231 and the second chamber 232 may be equipped with bearings. The through hole 233 is located between the first chamber 231 and the second chamber 232 and communicates with both chambers 231 and 232. The axis of the first chamber 231 and the axis of the second chamber 232 both coincide with the central axis of the positioning bracket 20.

[0076] When bending the stator assembly 10 into a circle, such as Figure 3 As shown, the connecting part 13 is connected to the connecting part 12. Multiple stator blocks 11 are bent inwards along their connection points to form a ring structure around the radial positioning part 21. The multiple stator blocks 11 are arranged circumferentially along the positioning bracket 20. The radial positioning part 21 enables radial positioning of the multiple stator blocks 11, ensuring that the stator assembly 10 remains stable and round during bending, and guaranteeing the roundness requirements of the multiple stator blocks 11. The axial positioning part 22 and the stator assembly 10 are arranged in the front-rear direction of the radial positioning part 21. The front ends of the multiple stator blocks 11 abut against the rear ends of the axial positioning part 22, allowing the stator assembly 10 to be positioned axially by the axial positioning part 22, preventing axial movement of the stator assembly 10 and ensuring the flatness requirements of the multiple stator blocks 11 in the front-rear direction.

[0077] During injection molding of the stator assembly 100, a first positioning hole 41 is formed at the front of the axial positioning part 22, and a second positioning hole 42 is formed at the rear of the stator assembly 10. This enables the fixation and limiting of the stator assembly 10 and the positioning bracket 20. Through the cooperation between the stator assembly 10 and the positioning bracket 20, the positioning of multiple stator segments 11 can be ensured, preventing the stator assembly 10 from being deformed due to impact. This allows the multiple stator segments 11 to be stably combined into a whole, ensuring reliable injection molding. At the same time, the first groove 31, the second groove 32, and the third groove 33 can expel air, achieving the integrity of the plastic seal of the stator assembly 100 and resulting in a better injection molding effect.

[0078] The motor according to an embodiment of the present invention includes a stator assembly 100 according to an embodiment of the present invention. Since the stator assembly 100 according to an embodiment of the present invention has the aforementioned beneficial technical effects, the motor according to an embodiment of the present invention, through the stator assembly 10 including a plurality of stator blocks 11 connected sequentially to each other, the plurality of stator blocks 11 are formed into a straight strip structure, facilitating winding onto the stator blocks 11, which is beneficial to improving winding efficiency and production reliability; by bending the plurality of stator blocks 11 inward along their connection points to form a ring structure around the positioning bracket 20, the plurality of stator blocks 11 are arranged along the circumferential direction of the positioning bracket 20, so that the stator bracket can position the plurality of stator blocks 11, ensuring that the stator assembly 10 is stably rounded during the bending process, guaranteeing the roundness requirements of the arrangement of the plurality of stator blocks 11, facilitating subsequent processing of the stator assembly 10, and improving the production qualification rate of the stator assembly 100 and reducing production costs.

[0079] The motor can be an inner stator and an outer rotor, but is not limited to this.

[0080] In some embodiments, the motor can be applied to household appliances, etc., to meet the required usage needs.

[0081] The stator assembly 100 and other components and operation of the motor according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0082] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0083] In the description of this specification, the references to terms such as "embodiment," "specific embodiment," and "example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0084] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A stator assembly, characterized in that, include: A stator assembly, comprising a plurality of stator blocks connected sequentially to each other, wherein the plurality of stator blocks are formed into a straight strip structure; A positioning bracket is provided, in which multiple stator segments are bent inward at their joints to form a ring structure around the positioning bracket. The multiple stator segments are arranged circumferentially around the positioning bracket. The two ends of the stator assembly are connected to each other along its length. The positioning bracket includes a radial positioning portion and an axial positioning portion. The stator assembly surrounds the radial positioning portion. The axial positioning portion is located on the outer peripheral wall of the radial positioning portion and extends circumferentially along the radial positioning portion. The axial positioning portion and the stator assembly are arranged axially along the radial positioning portion. One end of each stator segment along the axial direction of the stator assembly abuts against one end of the axial positioning portion along the axial direction. The radial positioning part is provided with a plurality of first grooves spaced apart along the circumferential direction of the radial positioning part, and each first groove extends along the axial direction of the radial positioning part; And / or, the axial positioning portion is provided with a second groove extending circumferentially along the side facing the stator assembly; And / or, the axial positioning portion is provided with a plurality of third grooves spaced apart along the circumferential direction of the axial positioning portion on the side facing the stator assembly, and each of the third grooves extends along the radial direction of the axial positioning portion.

2. The stator assembly according to claim 1, characterized in that, The stator assembly has a connecting portion at one end along its length and a connecting mating portion at the other end that connects to the connecting portion.

3. The stator assembly according to claim 1, characterized in that, When the positioning bracket has the first groove and the second groove, the first groove and the second groove are in communication with each other.

4. The stator assembly according to claim 1, characterized in that, When the positioning bracket has a second groove and a third groove, the second groove and the third groove are in communication with each other.

5. The stator assembly according to claim 1, characterized in that, The positioning bracket has a bearing cavity for accommodating the bearing.

6. The stator assembly according to claim 5, characterized in that, The bearing cavity includes: A first chamber and a second chamber are provided at intervals along the axial direction of the positioning bracket, and both the first chamber and the second chamber are provided with the bearing; A through hole is provided between the first chamber and the second chamber and communicates with the first chamber and the second chamber.

7. The stator assembly according to claim 6, characterized in that, The axis of the first chamber and the axis of the second chamber both coincide with the central axis of the positioning bracket.

8. The stator assembly according to claim 1, characterized in that, The positioning bracket is a non-magnetic component.

9. The stator assembly according to claim 1, characterized in that, Each of the stator segments includes a segmented iron core and an injection molded part, and multiple segments of iron core and multiple injection molded parts are integrally injection molded.

10. An electric motor, characterized in that, Includes the stator assembly according to any one of claims 1-9.

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