Stator assemblies, motors and electromechanical equipment

Abstract

The present invention provides a stator assembly, a motor, and an electromechanical device. The stator assembly includes: a stator core, including a stator yoke and a stator tooth; the stator yoke has a notch and includes at least one stator yoke segment; the stator tooth includes at least one stator tooth shoe and at least two stator tooth bodies; at least two stator tooth bodies are arranged along the circumference of the stator core; the two ends of any stator tooth body are respectively connected to the stator yoke segment and the stator tooth shoe, and any two adjacent stator tooth bodies are connected through the stator tooth shoe or the stator yoke segment, and the stator tooth shoe of the stator tooth portion and the stator yoke segment of the stator yoke portion are staggered along the circumference of the stator core; a winding coil is wound on the stator tooth body, and the same winding coil is wound on two adjacent stator tooth bodies connected through the stator tooth shoe or the stator yoke; an insulating member is connected to the stator core and is located between the winding coil and the stator core. The present application reduces the weight and production cost of the stator core and helps reduce the vibration noise of the motor.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a stator assembly, a motor and an electromechanical device. Background Art

[0002] The structure of the stator core of an existing motor is generally as follows: a stator tooth portion is arranged on a complete annular stator yoke portion, and the stator tooth portion includes a plurality of stator tooth bodies and stator tooth shoes corresponding to the plurality of stator tooth bodies one by one. The entire stator core is heavy, which is not conducive to the lightweighting of the motor and is also high in cost. Summary of the Invention

[0003] In order to solve at least one of the above technical problems, a first object of the present invention is to provide a stator assembly.

[0004] A second object of the present invention is to provide a motor comprising the above-mentioned stator assembly.

[0005] A third object of the present invention is to provide an electromechanical device comprising the above motor.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the first aspect of the present invention provides a stator assembly, comprising: a stator core, wherein the stator core comprises a stator tooth portion and a stator yoke portion; the stator tooth portion comprises at least one stator tooth shoe and at least two stator tooth bodies arranged along the circumference of the stator core; the two ends of any stator tooth body are respectively connected to the stator yoke segment and the stator tooth shoe, and any two adjacent stator tooth bodies are connected to one of the stator yoke segments through the stator tooth shoe, and the stator tooth shoe of the stator tooth portion and the stator yoke segment of the stator yoke portion are staggered along the circumference of the stator core; a winding coil is wound on the stator tooth body; an insulating member is connected to the stator tooth body; The stator core is connected and is located between the winding coil and the stator core, and is used to isolate the winding coil from the stator core; wherein the stator yoke has a notch, and the stator yoke includes at least one stator yoke segment; the two ends of any stator tooth body are respectively connected to the stator tooth shoe and the stator yoke segment, and any two adjacent stator tooth bodies are connected through the stator tooth shoe or the stator yoke segment, and the stator tooth shoe of the stator tooth part and the stator yoke segment of the stator yoke part are staggered along the circumference of the stator core; and the same winding coil is wound on two adjacent stator tooth bodies connected through the stator tooth shoe or the stator yoke.

[0007] The stator assembly provided by the technical solution of the first aspect of the present invention utilizes stator tooth boots and stator yoke segments staggered along the circumference of the stator core to connect multiple stator tooth bodies together, so that the stator yoke and stator tooth parts are connected as a whole. In other words, any two adjacent stator tooth bodies are connected as a whole only by the stator tooth boots or the stator yoke segments. For any two adjacent stator tooth bodies connected by the stator tooth boots, the ends of the two stator tooth bodies facing the stator yoke are not connected by the stator yoke segments, so the stator yoke is disconnected and has a gap between the two stator tooth bodies. Therefore, the stator yoke in the present application is a non-annular structure. Compared with the annular stator yoke in the prior art, the circumferential dimension of the stator yoke is reduced, thereby reducing the weight of the stator core, and also facilitating the reduction of the size of the insulating parts connected to the stator core, thereby facilitating the lightweighting of the motor and reducing the production cost of the product. In addition, the gap in the stator yoke facilitates airflow, facilitating heat dissipation within the motor, and thus improving the reliability of the motor.

[0008] In addition, the winding coils are wound on multiple stator teeth, and the same winding coil is wound on two adjacent stator teeth connected by stator tooth boots, or the same winding coil is wound on two adjacent stator teeth connected by stator yokes. That is to say, one winding coil spans two adjacent stator teeth, that is, a cross-tooth winding method is adopted. Compared with the single-tooth winding method in the prior art, it is beneficial to eliminate low-order harmonics, thereby improving the sinusoidality of the motor's back electromotive force and reducing the cogging torque pulsation, which is beneficial to reducing the cogging torque and thus reducing the vibration noise of the motor.

[0009] Of course, the winding coil can also be wound on the stator yoke to form a ring winding, then an air duct for air flow is formed between two adjacent stator teeth, which is beneficial to reduce the heat dissipation of the motor and thus improve the reliability of electrical components such as chips in the motor.

[0010] In addition, the stator assembly in the above technical solution provided by the present invention may also have the following additional technical features:

[0011] In the above technical solution, the two stator tooth bodies around which the same winding coil is wound are parallel to each other; or the two stator tooth bodies around which the same winding coil is wound are arranged in a V shape.

[0012] The two stator teeth, each containing the same winding coil, are parallel to each other, making it easy to adjust the parallel tooth spacing between the two teeth. This effectively increases the positive limit of the motor's back EMF and reduces cogging torque. Furthermore, this solution offers a more streamlined structure, which helps reduce winding complexity and improve winding efficiency.

[0013] The two stator teeth wound with the same winding coil are arranged in a V shape, which is beneficial to increasing the end face area of ​​the tooth body, thereby increasing the contact area between the tooth shoe and the rotor permanent magnet, which is beneficial to improving the utilization rate of the rotor permanent magnet, further improving the back electromotive force of the motor, and further reducing the tooth slot spacing.

[0014] In any of the above technical solutions, the stator tooth shoe protrudes from the connected stator tooth body along the circumferential direction of the stator core; and / or the stator yoke segment protrudes from the connected stator tooth body along the circumferential direction of the stator core.

[0015] The stator tooth shoe protrudes from the connected stator tooth body along the circumference of the stator core, which is convenient for connecting adjacent stator tooth bodies and is also beneficial for increasing the area of ​​the stator tooth shoe, thereby improving the matching effect between the stator core and the rotor assembly.

[0016] The stator yoke segments protrude from the connected stator tooth bodies along the circumference of the stator core, which facilitates the connection of adjacent stator tooth bodies and is also beneficial to increasing the circumferential length of the stator yoke, thereby improving the strength and reliability of the stator yoke.

[0017] In any of the above technical solutions, the stator tooth body extends radially along the stator core; and / or the stator tooth shoe extends circumferentially along the stator core; and / or the stator yoke segment is located radially outside or radially inside the stator tooth shoe.

[0018] The stator teeth extend radially along the stator core to form a radial motor.

[0019] The stator tooth shoe extends along the circumference of the stator core, which is convenient for connecting two adjacent stator tooth bodies and is also beneficial for reducing the axial size of the product.

[0020] The stator yoke segment is located radially outside the stator tooth shoe and can cooperate with the rotor assembly to form an inner rotor motor. Because the stator yoke radius of an inner rotor motor is relatively large, the solution of this application can significantly reduce the circumferential size of the stator yoke, thereby significantly reducing the weight and cost of the motor. Alternatively, the stator yoke segment can be located radially inside the stator tooth shoe, so that the stator core can cooperate with the rotor assembly to form an outer rotor motor, which can also reduce the weight and cost of the outer rotor motor.

[0021] In any of the above technical solutions, the number of the stator yoke segments is at least two, the number of the stator tooth shoes is equal to the number of the stator yoke segments, and the stator yoke segments and the stator tooth shoes are arranged one by one in an alternating manner along the circumference of the stator core.

[0022] Multiple stator yoke segments and multiple stator tooth shoes are staggered along the circumference of the stator core to form a regular structure. Compared with the annular yoke in the prior art, the stator yoke is reduced by half, which is conducive to significantly reducing the weight and cost of the motor.

[0023] In any of the above technical solutions, the stator yoke segment is in an arc shape or a straight line shape; and / or the stator tooth shoe is in an arc shape or a straight line shape.

[0024] The stator yoke section is arc-shaped and has a regular structure, which is easy to process and shape.

[0025] The stator yoke segment is straight-line in shape and has a regular structure, which is convenient for processing and forming. Compared with the arc-shaped solution, it is beneficial to reduce the radial size of the stator core, thereby reducing the radial size of the motor.

[0026] The stator tooth shoes are curved or straight, with a regular structure and easy processing and forming. Furthermore, this arrangement allows the stator yoke segments and stator tooth shoes to function interchangeably, allowing the stator core to be used in both inner-rotor motors (with the stator tooth shoes on the inside and the stator yoke on the outside) and outer-rotor motors (with the stator yoke on the inside and the stator tooth shoes on the outside), expanding the range of applications for the stator core.

[0027] In some technical solutions of the present invention, the stator core includes at least two splicing parts, and the at least two splicing parts are spliced ​​together to form the stator core, and each of the splicing parts is formed by stacking a plurality of punching sheets.

[0028] The stator core is split into at least two splicing parts, each of which is formed by stacking multiple punching sheets. The punching sheets of a single splicing part are smaller in size, which helps reduce the amount of waste generated by processing the punching sheets, thereby improving the utilization rate of raw materials and reducing production costs. At the same time, this solution also facilitates the selection of winding first and then splicing, or splicing first and then winding, as needed, which helps simplify the winding process and improve assembly efficiency. Furthermore, for a single splicing part, a protrusion or a recess can also be provided, and a welding position can be set at the protrusion or recess, and multiple punching sheets can be held together by welding to form a splicing part.

[0029] In the above technical solution, at least part of the spliced ​​portion includes two stator tooth bodies wound with the same winding coil.

[0030] In this solution, a single splicing portion includes two stator tooth bodies wound with the same winding coil, which makes it easy to wind the wire first as needed and then splice and fix the multiple splicing portions. This helps reduce the difficulty of winding and improve assembly efficiency.

[0031] In the above technical solution, the insulating part and the stator core are split structures, and the insulating part is a split structure, and the insulating part includes at least two insulating parts, and the at least two insulating parts correspond one-to-one to the multiple splicing parts of the stator core, so that: the winding coil is suitable for being wound on the insulating part by a winding tool, and the insulating part is connected to the corresponding splicing part after the winding operation is completed; or the winding coil is suitable for being wound on the splicing part after the insulating part is connected to the corresponding splicing part.

[0032] The insulating part and the stator core are split structures, formed separately and then assembled. In addition, the insulating part is also a split structure, divided into at least two insulating parts, which correspond one to one with the multiple splicing parts of the stator core. In this way, during the production process, the winding can be performed first and then the stator core can be spliced ​​and assembled as needed, which helps to reduce the difficulty of winding and thus improve assembly efficiency. Compared with the solution of winding directly on the stator core and then connecting the stator core and the insulating part, this solution can prevent the stator core from being bent and deformed due to excessive force when the winding operation is performed directly on the stator core, which helps to improve the stability of the shape of the stator core. Specifically, the insulating part can be put on the winding tool first, and the winding coil can be wound along the preset direction. After the winding is completed, the insulating part can be installed on the splicing part, and then the multiple splicing parts can be spliced ​​together. Alternatively, the insulating part may be installed on the splicing part to form an assembly, and then the winding coil may be wound on the assembly formed by the insulating part and the splicing part along a preset direction. After the winding is completed, the multiple splicing parts may be spliced ​​together.

[0033] In the above technical solution, the splicing position of the at least two splicing parts is recorded as the splicing point of the stator core; wherein, the stator tooth body and the stator yoke segment are constructed as a split structure, and the splicing point includes the intersection of the stator tooth body and the stator yoke segment; and / or the stator yoke segment is constructed into at least two yoke segments spliced ​​together along the circumference of the stator core, and the splicing point includes the intersection of the at least two yoke segments; and / or the stator tooth shoe is constructed into at least two tooth shoe segments spliced ​​together along the circumference of the stator core, and the splicing point includes the intersection of the at least two tooth shoe segments.

[0034] The stator core's joints also serve as its divisions. That is, the stator core is separated along the joints, forming at least two joints. In other words, the stator core is divided along the junctions between the stator tooth body and the stator yoke, along the stator yoke, and along at least a portion of the stator tooth shoe, forming a split structure.

[0035] The stator tooth body and stator yoke segments are constructed as separate structures, molded separately, and then spliced ​​together. The intersection of the stator tooth body and stator yoke segment forms at least a portion of the splice. This solution facilitates winding the teeth first, then splicing the wound stator yoke segment with the stator tooth body, simplifying the winding process and improving assembly efficiency. Furthermore, the structure of a single stator yoke segment is relatively regular, and the stamping and forming of the individual stator yoke segments also produces less waste, further reducing raw material waste and improving raw material utilization.

[0036] The stator yoke segment is constructed into at least two yoke segments, and the multiple yoke segments are spliced ​​together along the circumference of the stator core, so that the two yoke segments, the two stator tooth bodies and the stator tooth shoes can be designed into a whole according to needs. During assembly, it is only necessary to assemble the adjacent yoke segments along the circumferential direction, which is conducive to reducing the number of splicing parts and the number of splicing positions, thereby improving assembly efficiency.

[0037] The stator tooth shoe is constructed into at least two tooth shoe segments, and multiple tooth shoe segments are spliced ​​together along the circumference of the stator core, so that the two tooth shoe segments, two stator tooth bodies and stator yoke segments can be designed into a whole according to needs. During assembly, it is only necessary to assemble adjacent tooth shoe segments along the circumferential direction, which is beneficial to reduce the number of splicing parts and the number of splicing positions, thereby improving assembly efficiency.

[0038] In the above technical solution, one of the two adjacent splicing parts is provided with a convex part, and the other is provided with a concave part adapted to the convex part, and the convex part and the concave part cooperate with each other to splice and connect the two adjacent splicing parts.

[0039] The two adjacent splicing parts are assembled by the cooperation of the convex part and the concave part, which is convenient for assembly and helps to further improve the assembly efficiency. Specifically, the shape of the convex part can be, but is not limited to, semicircular, triangular, dovetail, etc.

[0040] In the above technical solution, splicing bosses are provided at both circumferential ends of the splicing portion, the splicing bosses protrude from the splicing portion in the radial direction of the stator core, and the splicing bosses are provided with the convex portion or the concave portion.

[0041] By providing splicing bosses at both circumferential ends of the splicing portion, and providing the convex portion or the concave portion on the splicing bosses, the splicing bosses of the adjacent splicing portions are aligned during assembly so that the convex portions are embedded in the concave portions one by one, thereby achieving circumferential assembly of multiple splicing portions, and the assembly is convenient and quick. At the same time, since the splicing bosses protrude from the splicing portion in the radial direction of the stator core, they will not affect the circumferential structure of the splicing portion, which is beneficial to ensuring the integrity of the circumferential structure of the splicing portion, thereby reducing the impact on the magnetic circuit. For example: for the aforementioned scheme of constructing the stator yoke segment into at least two yoke segments, the two yoke segments, the two stator tooth bodies and the stator tooth boots can be designed as a whole, and splicing bosses are respectively provided at the opposite ends of the two yoke segments, and the multiple splicing portions can be directly connected through the splicing bosses, which is simple and quick.

[0042] In some other technical solutions of the present invention, the stator core is an integrated structure, and the stator core is formed by stacking a plurality of punching sheets.

[0043] The stator core is an integrated structure, formed directly by stacking multiple punching sheets. You only need to select appropriate punching sheets according to the shape of the stator core, and then stack and hold the multiple punching sheets together by welding or gluing to obtain the stator core. The process is simple and easy to form.

[0044] In the above technical solution, the insulating member is connected to the stator core to form an integrated structure, so that the winding coil is suitable for being wound on the stator tooth body after the insulating member and the stator core form the integrated structure.

[0045] The insulator is integrally connected to the stator core and cannot be separated. During production, the insulator and stator core must be integrally connected. This can be done by injection molding the insulator onto the stator core before winding the wire. This solution effectively ensures a secure connection between the insulator and stator core, thereby improving the reliability of the motor.

[0046] In the above technical solution, the stator core is an integrated structure formed by welding; the side wall of the stator yoke segment is provided with at least one protrusion or recess, and the welding position of the stator core is provided at the protrusion or recess.

[0047] At least one protrusion or recess is provided on the side wall of the stator yoke segment, and the welding position is provided at the protrusion or recess. Then, welding is performed directly along the protrusion or recess, so that multiple punching sheets can be welded together. The resulting weld is straighter and more beautiful, and the influence of the weld on the magnetic circuit can be minimized.

[0048] In any of the above technical solutions, the winding coil is a single-wire structure or a multi-wire structure, which can be reasonably selected according to needs during the specific production process.

[0049] In any of the above technical solutions, the connection mode of the winding coils is star or triangle, but it is certainly not limited to these two connection modes, and other connection modes are also possible.

[0050] The technical solution of the second aspect of the present invention provides a motor, comprising: a stator assembly as described in the technical solution of the first aspect; and a rotor assembly, arranged concentrically with the stator assembly.

[0051] The motor provided by the technical solution of the second aspect of the present invention includes the stator assembly described in the technical solution of the first aspect, and thus has all the beneficial effects of any of the above technical solutions, which will not be repeated here.

[0052] The rotor assembly can be sleeved on the inner side of the stator assembly to form an inner rotor motor, or can be sleeved on the outer side of the stator assembly to form an outer rotor motor.

[0053] In the above technical solution, the number of stator yoke segments of the stator assembly is three, the number of stator tooth boots of the stator assembly is three, and the number of stator tooth bodies of the stator assembly is six; the rotor assembly includes a permanent magnet ring, and the permanent magnet ring is an integrated structure or a split splicing structure, and the permanent magnet ring is a two-pole permanent magnet ring, a four-pole permanent magnet ring, or an eight-pole permanent magnet ring.

[0054] The motor structure of this solution is relatively simple, more commonly used, and has high reliability. Of course, the number of stator yoke segments, the number of stator tooth shoes, the number of stator tooth bodies, and the number of poles of the permanent magnet ring are not limited to the above solution and can be adjusted as needed during actual production.

[0055] The technical solution of the third aspect of the present invention provides an electromechanical device, comprising: a device body; and the motor as described in the technical solution of the second aspect, which is arranged in the device body.

[0056] The electromechanical equipment provided by the technical solution of the third aspect of the present invention includes the motor described in the technical solution of the second aspect, and thus has all the beneficial effects of the above technical solutions, which will not be repeated here.

[0057] In the above technical solution, the electromechanical equipment is household appliances, medical equipment, power generation and energy storage equipment, chemical detection and material wind power equipment or unmanned aerial vehicles.

[0058] Of course, the electromechanical equipment is not limited to the above equipment, and may also be other equipment using motors.

[0059] Additional aspects and advantages of the invention will become apparent from the description which follows, or may be learned by practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0061] Figure 1 1 is a schematic structural diagram of a stator core according to an embodiment of the present invention;

[0062] Figure 2 1 is a structural diagram of a splicing portion according to an embodiment of the present invention;

[0063] Figure 3 yes Figure 2 A schematic structural diagram of a stator core formed by splicing the splicing parts shown;

[0064] Figure 4 1 is a schematic structural diagram of two spliced ​​portions of a stator core according to an embodiment of the present invention;

[0065] Figure 5 yes Figure 4 A schematic diagram of the structure of the stator core formed by splicing the structures shown;

[0066] Figure 6 FIG is a schematic structural diagram of two spliced ​​portions of a stator core according to an embodiment of the present invention;

[0067] Figure 7 yes Figure 6 A schematic diagram of the structure of the stator core formed by splicing the structures shown;

[0068] Figure 8 FIG is a structural schematic diagram of a splicing portion of a stator core according to an embodiment of the present invention;

[0069] Figure 9 yes Figure 8 A schematic diagram of the structure of the stator core formed by splicing the structures shown;

[0070] Figure 10 FIG is a structural schematic diagram of a splicing portion of a stator core according to an embodiment of the present invention;

[0071] Figure 11 yes Figure 10 A schematic diagram of the structure of the stator core formed by splicing the structures shown;

[0072] Figure 12 is a schematic diagram of the exploded structure of a stator assembly according to one embodiment of the present invention;

[0073] Figure 13 yes Figure 12 A schematic diagram of the structure of a motor formed by assembling a stator assembly and a rotor assembly is shown;

[0074] Figure 14is a schematic diagram of the exploded structure of a stator assembly according to one embodiment of the present invention;

[0075] Figure 15 yes Figure 14 A schematic diagram of the structure of a motor formed by assembling a stator assembly and a rotor assembly is shown;

[0076] Figure 16 It is a schematic block diagram of an electromechanical device according to an embodiment of the present invention.

[0077] in, Figures 1 to 16 The corresponding relationship between the reference numerals and component names is as follows:

[0078] 1 motor;

[0079] 10 stator assembly, 14 rotor assembly;

[0080] 20 stator core, 11 splicing portion, 12 insulation member, 13 winding coil;

[0081] 111 stator yoke, 1111 welding position, 1112 splicing boss, 1113 convex portion, 1114 concave portion, 1115 stator yoke segment, 1116 yoke segment, 112 stator tooth, 1121 stator tooth body, 1122 stator tooth shoe, 1123 tooth shoe segment;

[0082] 2 Mechanical and electrical equipment, 202 Equipment body. DETAILED DESCRIPTION

[0083] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0084] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0085] Refer to the following Figures 1 to 16 A stator assembly, a motor, and an electromechanical device according to some embodiments of the present invention are described.

[0086] The stator assembly 10 provided by the embodiment of the first aspect of the present invention includes: a stator core 20 , a winding coil 13 and an insulating member 12 .

[0087] Specifically, the stator core 20 includes a stator yoke portion 111 and a stator tooth portion 112. The stator yoke portion 111 has a gap and includes at least one stator yoke segment 1115, such as Figure 2 、 Figure 4and Figure 6 As shown. The stator tooth portion 112 includes at least one stator tooth shoe 1122 and at least two stator tooth bodies 1121, as shown. Figure 1 、 Figure 3 、 Figure 5 、 Figure 7 、 Figure 9 and Figure 11 At least two stator tooth bodies 1121 are arranged along the circumference of the stator core 20 , and two ends of any stator tooth body 1121 are connected to the stator yoke segment 1115 and the stator tooth shoe 1122 respectively.

[0088] Any two adjacent stator tooth bodies 1121 are connected via a stator tooth shoe 1122 or a stator yoke segment 1115 (or, any two adjacent stator tooth bodies 1121 share a stator tooth shoe 1122 or a stator yoke segment 1115), such as Figure 1 、 Figure 3 、 Figure 5 、 Figure 7 、 Figure 9 and Figure 11 As shown, the stator tooth shoes 1122 of the stator tooth portion 112 and the stator yoke segments 1115 of the stator yoke portion 111 are alternately arranged along the circumferential direction of the stator core 20 .

[0089] The winding coil 13 is wound on the stator tooth body 1121, and the same winding coil 13 is wound on two adjacent stator tooth bodies 1121 connected by the stator tooth shoe 1122 or the stator yoke 111. Figures 12 to 15 shown.

[0090] The insulating member 12 is connected to the stator core 20 and is located between the winding coil 13 and the stator core 20 , and is used to isolate the winding coil 13 from the stator core 20 .

[0091] The stator assembly 10 provided by the embodiment of the first aspect of the present invention utilizes stator tooth boots 1122 and stator yoke segments 1115 staggered along the circumference of the stator core 20 to connect multiple stator tooth bodies 1121 together, so that the stator yoke portion 111 and the stator tooth portion 112 are connected as a whole.

[0092] In other words, any two adjacent stator tooth bodies 1121 are connected as a whole only through the stator tooth shoe 1122 or the stator yoke segment 1115. Then, for any two adjacent stator tooth bodies 1121 connected through the stator tooth shoe 1122, the ends of these two stator tooth bodies 1121 facing the stator yoke portion 111 are not connected through the stator yoke segment 1115, so the stator yoke portion 111 is disconnected between the two stator tooth bodies 1121 and has a gap.

[0093] Therefore, the stator yoke 111 in the present application is a non-annular structure. Compared with the annular stator yoke 111 in the prior art, the circumferential size of the stator yoke 111 is reduced, thereby reducing the weight of the stator core 20, and is also beneficial to reducing the size of the insulating part 12 connected to the stator core 20, which is beneficial to the lightweighting of the motor 1 and also reduces the production cost of the product.

[0094] In addition, the notch portion of the stator yoke 111 facilitates airflow to pass through, which is beneficial to heat dissipation inside the motor 1 , thereby improving the reliability of the motor 1 .

[0095] Furthermore, the winding coils 13 are wound around multiple stator tooth bodies 1121, with the same winding coil 13 being wound around two adjacent stator tooth bodies 1121 connected by stator tooth boots 1122, or around two adjacent stator tooth bodies 1121 connected by a stator yoke 111. In other words, one winding coil 13 spans two adjacent stator tooth bodies 1121, i.e., employing a cross-tooth winding method. Compared to the single-tooth winding method used in the prior art, this method facilitates the elimination of low-order harmonics, thereby improving the sinusoidality of the back EMF of the motor 1 and reducing cogging torque ripple, thereby reducing cogging torque and, in turn, the vibration and noise of the motor 1.

[0096] In other embodiments of the present invention, the winding coil 13 is wound on the stator yoke 111, and an air duct for air flow is formed between two adjacent stator tooth bodies 1121, which is beneficial to reducing the heat dissipation of the motor 1 and thereby improving the reliability of electrical components such as chips in the motor 1.

[0097] Among them, the insulating part 12 is usually a frame structure, that is, an insulating frame, which can be connected to the stator core 20 by injection molding; the insulating frame can also be processed separately, buckled on the stator core 20, or inserted into the stator core 20.

[0098] Some embodiments are described below with reference to the accompanying drawings.

[0099] Example 1

[0100] The stator core 20 is an integrated structure. Figure 1 The stator core 20 is formed by laminating a plurality of punching sheets.

[0101] The stator core 20 is an integrated structure, which is directly formed by stacking multiple punching sheets. It is only necessary to select suitable punching sheets according to the shape of the stator core 20, and then stack and hold the multiple punching sheets together by welding or gluing to obtain the stator core 20. The process is simple and easy to form.

[0102] Furthermore, the stator core 20 is a one-piece structure formed by welding. The side wall of the stator yoke section 1115 is provided with at least one protrusion or recess, and the welding position 1111 of the stator core 20 is provided at the protrusion or recess, such as Figure 1 shown.

[0103] At least one protrusion or recess is provided on the side wall of the stator yoke segment 1115, and the welding position 1111 is provided at the protrusion (e.g. Figure 1 As shown in the figure, if the protrusion or depression is located at the top, the welding can be performed directly along the protrusion or depression, so that multiple punching sheets can be welded together. The resulting weld is straighter and more beautiful, and the influence of the weld on the magnetic circuit can be minimized.

[0104] Example 2

[0105] The stator core 20 includes at least two splicing parts 11, such as Figures 2 to 11 At least two splicing parts 11 are spliced ​​together to form the stator core 20. Each splicing part 11 is formed by laminating a plurality of punching sheets.

[0106] The stator core 20 is split into at least two splicing parts 11, and each splicing part 11 is formed by stacking multiple punching sheets. The punching sheet size of a single splicing part 11 is small, which is beneficial to reducing the amount of waste generated by processing the punching sheets, thereby improving the utilization rate of raw materials and reducing production costs.

[0107] At the same time, this solution also facilitates the selection of winding first and then splicing or splicing first and then winding according to needs, which is conducive to simplifying the winding process and improving assembly efficiency.

[0108] Furthermore, at least part of the splicing portion 11 includes two stator teeth 1121 wound with the same winding coil 13, such as Figures 12 to 15 shown.

[0109] In this solution, a single splicing portion 11 includes two stator tooth bodies 1121 wound with the same winding coil 13, which facilitates winding first as needed and then splicing and fixing multiple splicing portions 11, which helps reduce the difficulty of winding and improve assembly efficiency.

[0110] Specifically, all the splicing parts 11 include two stator tooth bodies 1121 wound with the same winding coil 13, such as Figure 12 and Figure 13 shown.

[0111] Alternatively, part of the spliced ​​portion 11 includes two stator tooth bodies 1121 wound with the same winding coil 13, and part of the spliced ​​portion 11 does not include two stator tooth bodies 1121 wound with the same winding coil 13. Figure 14 and Figure 15 As shown. Figure 14 and Figure 15 In the figure, the splicing portion 11 composed of the stator yoke segment 1115 does not include two stator tooth bodies 1121 wound with the same winding coil 13, while the splicing portion 11 formed by the two stator tooth bodies 1121 and one stator tooth shoe 1122 includes two stator tooth bodies 1121 wound with the same winding coil 13.

[0112] Furthermore, for a single splicing portion 11, a protrusion or a recess can also be provided, and the welding position 1111 is provided at the protrusion or the recess, such as Figure 2 、 Figure 4 、 Figure 6 、 Figure 8 and Figure 10 As shown, a plurality of punching sheets are held together by welding to form a splice 11 .

[0113] Specifically, the splicing position of at least two splicing parts 11 is recorded as the splicing position of the stator core 20. The stator tooth body 1121 and the stator yoke segment 1115 are constructed as a split structure, such as Figures 4 to 7 The joint includes the junction of the stator tooth body 1121 and the stator yoke segment 1115.

[0114] The joints of the stator core 20 also serve as the division points of the stator core 20. Specifically, the stator core 20 is separated along the joints, forming at least two joints 11. In other words, the stator core 20 is divided along the intersection of the stator tooth body 1121 and the stator yoke segment 1115, along the stator yoke segment 1115, and along at least a portion of the stator tooth shoe 1122, forming a split structure.

[0115] The stator tooth body 1121 and stator yoke segment 1115 are constructed as separate structures, molded separately, and then spliced ​​together. The intersection of the stator tooth body 1121 and the stator yoke segment 1115 forms at least a portion of the spliced ​​joint. This solution facilitates winding the teeth first, then splicing the wound stator yoke segment 1115 with the stator tooth body 1121, simplifying the winding process and improving assembly efficiency.

[0116] At the same time, the structure of a single stator yoke segment 1115 is relatively regular, and less waste is generated during the punching and forming of the single stator yoke segment 1115, which is conducive to further reducing the amount of waste raw materials and further improving the utilization rate of raw materials.

[0117] Example 3

[0118] The difference from the second embodiment is that the stator yoke segment 1115 is constructed into at least two yoke segments 1116 spliced ​​together along the circumference of the stator core 20, such as Figures 8 to 11 The splice includes the intersection of at least two yoke sections 1116.

[0119] The stator yoke segment 1115 is constructed into at least two yoke segments 1116, and the multiple yoke segments 1116 are spliced ​​together along the circumference of the stator core 20, so that the two yoke segments 1116, the two stator tooth bodies 1121 and the stator tooth boots 1122 can be designed into a whole as needed. During assembly, it is only necessary to assemble the adjacent yoke segments 1116 along the circumferential direction, which is beneficial to reduce the number of splicing parts 11 and the splicing positions, thereby improving assembly efficiency.

[0120] Example 4

[0121] The difference from the second embodiment is that the stator tooth shoe 1122 is constructed into at least two tooth shoe segments 1123 spliced ​​together along the circumference of the stator core 20, such as Figure 2 and Figure 3 The joint includes the intersection of at least two tooth shoe segments 1123.

[0122] The stator tooth shoe 1122 is constructed into at least two tooth shoe segments 1123, and multiple tooth shoe segments 1123 are spliced ​​together along the circumference of the stator core 20, so that the two tooth shoe segments 1123, the two stator tooth bodies 1121 and the stator yoke segment 1115 can be designed into a whole as needed. During assembly, it is only necessary to assemble the adjacent tooth shoe segments 1123 along the circumferential direction, which is beneficial to reduce the number of splicing parts 11 and the splicing positions, thereby improving assembly efficiency.

[0123] In the above-mentioned embodiments 2 to 4, further, one of the two adjacent splicing parts 11 is provided with a convex part 1113, and the other is provided with a concave part 1114 adapted to the convex part 1113, as shown in FIG. Figures 2 to 11 As shown, the convex portion 1113 and the concave portion 1114 cooperate with each other to splice and connect two adjacent splicing portions 11 .

[0124] The two adjacent splicing parts 11 are assembled by the cooperation between the convex part 1113 and the concave part 1114, which is convenient for assembly and helps to further improve the assembly efficiency.

[0125] Specifically, the shape of the convex portion 1113 can be, but is not limited to: a semicircular shape (e.g. Figures 4 to 11 As shown), triangle, swallowtail (as Figure 2 and Figure 3 shown) etc.

[0126] Furthermore, splicing bosses 1112 are provided at both circumferential ends of the splicing portion 11. Figures 8 to 11 As shown, the splicing boss 1112 protrudes from the splicing portion 11 along the radial direction of the stator core 20 , and the splicing boss 1112 is provided with a convex portion 1113 or a concave portion 1114 .

[0127] Splicing bosses 1112 are provided at both circumferential ends of the splicing portion 11, and the convex portion 1113 or the concave portion 1114 is provided on the splicing bosses 1112. When assembling, the splicing bosses 1112 of adjacent splicing portions 11 are aligned so that the convex portions 1113 are embedded in the concave portion 1114 one by one, thereby realizing the circumferential assembly of multiple splicing portions 11, and the assembly is convenient and quick.

[0128] At the same time, since the splicing boss 1112 protrudes from the splicing part 11 along the radial direction of the stator core 20, it will not affect the circumferential structure of the splicing part 11, which is conducive to ensuring the integrity of the circumferential structure of the splicing part 11 and thus reducing the impact on the magnetic circuit.

[0129] For example, for the aforementioned solution of constructing the stator yoke segment 1115 into at least two yoke segments 1116, the two yoke segments 1116, the two stator tooth bodies 1121 and the stator tooth shoes 1122 can be designed as a whole, such as Figure 8 and Figure 10 As shown, splicing bosses 1112 are respectively provided at the ends of the two yoke sections 1116 that are away from each other, and the multiple splicing parts 11 can be directly connected through the splicing bosses 1112, which is simple and quick.

[0130] In some embodiments of the present invention, further, the stator tooth shoe 1122 protrudes from the connected stator tooth body 1121 along the circumferential direction of the stator core 20 .

[0131] The stator tooth shoe 1122 protrudes from the connected stator tooth body 1121 along the circumference of the stator core 20, which is convenient for connecting adjacent stator tooth bodies 1121 and is also beneficial for increasing the area of ​​the stator tooth shoe 1122, thereby improving the matching effect between the stator core 20 and the rotor assembly 14.

[0132] In some embodiments of the present invention, further, the stator yoke segment 1115 protrudes from the connected stator tooth body 1121 along the circumferential direction of the stator core 20 .

[0133] The stator yoke segment 1115 protrudes from the connected stator tooth body 1121 along the circumference of the stator core 20, which facilitates the connection of adjacent stator tooth bodies 1121 and is also beneficial to increasing the circumferential length of the stator yoke part 111, thereby improving the strength and reliability of the stator yoke part 111.

[0134] In some embodiments of the present invention, further, the stator tooth body 1121 extends radially along the stator core 20 , the stator tooth shoe 1122 extends circumferentially along the stator core 20 , and the stator yoke segment 1115 is located radially outside or radially inside the stator tooth shoe 1122 .

[0135] The stator tooth body 1121 extends in the radial direction of the stator core 20 to form a radial motor 1. Of course, the stator tooth body 1121 can also extend in the axial direction of the stator core 20 to form an axial motor.

[0136] The stator tooth shoe 1122 extends along the circumference of the stator core 20 , which is convenient for connecting two adjacent stator tooth bodies 1121 and is also beneficial for reducing the axial size of the product.

[0137] The stator yoke segment 1115 is located radially outward from the stator tooth shoe 1122 and can cooperate with the rotor assembly 14 to form the inner rotor motor 1. Since the stator yoke portion 111 of the inner rotor motor 1 has a large radius, the solution of the present application is conducive to significantly reducing the circumferential size of the stator yoke portion 111, thereby significantly reducing the weight and cost of the motor 1.

[0138] Alternatively, the stator yoke segment 1115 may also be located radially inward of the stator tooth shoe 1122, so that the stator core 20 can cooperate with the rotor assembly 14 to form an outer rotor motor 1, and the weight and cost of the outer rotor motor can also be reduced.

[0139] In some embodiments of the present invention, the number of stator yoke segments 1115 is at least two, the number of stator tooth shoes 1122 is equal to the number of stator yoke segments 1115, and the stator yoke segments 1115 and the stator tooth shoes 1122 are staggered one by one along the circumference of the stator core 20, such as Figure 1 、 Figure 3 、 Figure 5 、 Figure 7 、 Figure 9 and Figure 11 shown.

[0140] Multiple stator yoke segments 1115 and multiple stator tooth shoes 1122 are arranged one by one in an stator yoke segment along the circumference of the stator core 20 to form a regular structure. Compared with the annular yoke in the prior art, the stator yoke 111 is reduced by half, which is beneficial to significantly reduce the weight and cost of the motor 1.

[0141] In some embodiments of the present invention, the stator yoke segment 1115 is arc-shaped, such as Figure 4 、 Figure 6 、 Figure 8 and Figure 10 shown.

[0142] The stator yoke segment 1115 is arc-shaped and has a regular structure, which is easy to process and form.

[0143] In other embodiments of the present invention, the stator yoke segment 1115 is linear, such as Figure 2 shown.

[0144] The stator yoke segment 1115 is linear and has a regular structure, which is easy to process and form. Compared with the arc-shaped solution, it is beneficial to reduce the radial size of the stator core 20 and thus reduce the radial size of the motor 1.

[0145] In some embodiments of the present invention, the stator tooth shoe 1122 is arc-shaped (eg Figure 1 shown) or straight line (not shown).

[0146] The stator tooth shoe 1122 is in an arc shape or a straight line shape, with a regular structure and easy processing and forming. In addition, this arrangement allows the stator yoke section 1115 and the stator tooth shoe 1122 to interchange their functions, so that the stator core 20 can be used for both inner rotor motors (the inner side is the stator tooth shoe 1122, and the outer side is the stator yoke 111, such as Figure 13 and Figure 15 As shown in FIG, it can also be used for an outer rotor motor (the inner side is the stator yoke 111 and the outer side is the stator tooth shoe 1122), which expands the use range of the stator core 20.

[0147] In some embodiments of the present invention, two stator teeth 1121 wound with the same winding coil 13 are parallel to each other (similar to Figure 12 and Figure 13 shown).

[0148] The two stator teeth 1121, each wound with the same winding coil 13, are parallel to each other, making it easy to adjust the parallel tooth spacing between the two teeth, thereby effectively increasing the positive limit of the motor's back EMF and reducing the cogging torque. This solution also provides a more regular structure, which helps reduce winding difficulty and improve winding efficiency.

[0149] In other embodiments of the present invention, two stator teeth 1121 wound with the same winding coil 13 are arranged in a V shape, such as Figure 14 and Figure 15 shown.

[0150] The two stator tooth bodies 1121 wound with the same winding coil 13 are arranged in a V shape, which is beneficial to increasing the end face area of ​​the tooth body, thereby increasing the contact area between the tooth shoe and the rotor permanent magnet, which is beneficial to improving the utilization rate of the rotor permanent magnet, and further improving the back electromotive force of the motor, and further reducing the tooth slot spacing.

[0151] In some embodiments of the present invention, the number of winding coils 13 is multiple, such as Figures 12 to 15 As shown, the winding directions of the plurality of winding coils 13 are the same.

[0152] Using the same winding direction not only helps to reduce the difficulty of winding, but also facilitates the connection between the winding coils 13 as needed.

[0153] In one embodiment of the present invention, the insulating member 12 is connected to the stator core 20 to form an integrated structure, so that the winding coil 13 is suitable for being wound on the stator tooth body 1121 after the insulating member 12 and the stator core 20 form an integrated structure.

[0154] The insulator 12 and stator core 20 are connected to form an integral structure and cannot be separated. During the production process, the insulator 12 and stator core 20 must first be connected as one. Specifically, the insulator 12 can be injection molded onto the stator core 20, and then the winding operation is performed. This solution can effectively ensure the reliability of the connection between the insulator 12 and the stator core 20, thereby improving the reliability of the motor 1.

[0155] In another embodiment of the present invention, the insulating member 12 and the stator core 20 are split structures, and the insulating member 12 is a split structure, and the insulating member 12 includes at least two insulating parts, and the at least two insulating parts correspond one-to-one to the multiple splicing parts 11 of the stator core 20, so that: the winding coil 13 is suitable for being wound on the insulating part by a winding tool, and the insulating part is connected to the corresponding splicing part 11 after the winding operation is completed.

[0156] In another embodiment of the present invention, the insulating member 12 and the stator core 20 are of a split structure, and the insulating member 12 is a split structure, and the insulating member 12 includes at least two insulating parts, and the at least two insulating parts correspond to the multiple splicing parts 11 of the stator core 20 one by one, so that: the winding coil 13 is suitable for being wound on the splicing part 11 after the insulating part is connected to the corresponding splicing part 11, such as Figures 13 to 15 shown.

[0157] In the two aforementioned embodiments, the insulator 12 and the stator core 20 are split structures, formed separately and then assembled. Furthermore, the insulator 12 is also split into at least two insulating parts, corresponding one-to-one with the multiple splicing sections 11 of the stator core 20. This allows the stator core 20 to be spliced ​​and assembled as needed during production, reducing winding complexity and improving assembly efficiency.

[0158] Compared with the solution of directly winding the wire on the stator core 20 and then connecting the stator core 20 to the insulating member 12, this solution can prevent the stator core 20 from being bent and deformed due to excessive force when the winding operation is performed directly on the stator core 20, which is beneficial to improving the shape stability of the stator core 20.

[0159] Specifically, the insulating part can be put on the winding tool first, and the winding coil 13 can be wound along a preset direction. After the winding is completed, the insulating part is installed on the splicing part 11, and then multiple splicing parts 11 are spliced ​​together.

[0160] Alternatively, the insulating portion may be mounted on the splicing portion 11 to form a component, and then the winding coil 13 may be wound on the component formed by the insulating portion and the splicing portion 11 along a preset direction. Figure 12 and Figure 14 As shown, multiple splicing parts 11 are spliced ​​together, as shown in FIG. Figure 13and Figure 15 shown.

[0161] In any of the above embodiments, the winding coil 13 is a single-wire structure or a multi-wire structure, which can be reasonably selected according to needs during the specific production process.

[0162] In any of the above embodiments, the connection mode of the winding coils 13 is star-shaped or triangle-shaped, but it is not limited to these two connection modes and other connection modes are also possible.

[0163] The embodiment of the second aspect of the present invention provides a motor 1, such as Figure 13 and Figure 15 As shown, it comprises: a stator assembly 10 according to the embodiment of the first aspect and a rotor assembly 14 , which is arranged concentrically with the stator assembly 10 .

[0164] The motor 1 provided in the embodiment of the second aspect of the present invention includes the stator assembly 10 of the embodiment of the first aspect, and thus has all the beneficial effects of any of the above embodiments, which will not be described in detail here.

[0165] The rotor assembly 14 can be sleeved on the inner side of the stator assembly 10 to form an inner rotor motor 1 , or can be sleeved on the outer side of the stator assembly 10 to form an outer rotor motor 1 .

[0166] In some embodiments of the present invention, the number of stator yoke segments 1115 of the stator assembly 10 is three, the number of stator tooth boots 1122 of the stator assembly 10 is three, and the number of stator tooth bodies 1121 of the stator assembly 10 is six; the rotor assembly 14 includes a permanent magnet ring, which is an integrated structure or a split splicing structure, and is a two-pole permanent magnet ring or a four-pole permanent magnet ring.

[0167] The motor 1 of this solution has a simpler structure, is more commonly used, and has high reliability.

[0168] Of course, the number of stator yoke segments 1115, the number of stator tooth shoes 1122, the number of stator tooth bodies 1121 and the number of poles of the permanent magnet ring are not limited to the above scheme and can be adjusted as needed during actual production.

[0169] The embodiment of the third aspect of the present invention provides an electromechanical device 2, such as Figure 16 As shown, it includes: a device body 202 and a motor 1 as in the second embodiment, which is arranged in the device body 202.

[0170] The electromechanical device 2 provided in the embodiment of the third aspect of the present invention includes the motor 1 of the embodiment of the second aspect, and thus has all the beneficial effects of the above embodiments, which will not be described in detail here.

[0171] In the above embodiment, the electromechanical device 2 is a household appliance, a medical device, a power generation and energy storage device, a chemical detection and material wind power device, or an unmanned aerial vehicle.

[0172] Of course, the electromechanical device 2 is not limited to the above-mentioned devices, and may also be other devices using the motor 1 .

[0173] The following combination Figures 12 to 15 Some specific examples are introduced, and the assembly process of the motor 1 is described in detail.

[0174] A motor 1 includes a stator assembly 10 and a rotor assembly 14. The stator assembly 10 includes a stator core 20, an insulating frame, and winding coils 13. The stator core 20 includes three circumferentially evenly spaced stator yoke segments 1115, three circumferentially evenly spaced stator tooth shoes 1122, and six circumferentially evenly spaced stator tooth bodies 1121. Any two stator tooth bodies 1121 are connected to form a single unit only through the stator tooth shoes 1122 or the stator yoke segments 1115. The three stator yoke segments 1115 and the three stator tooth shoes 1122 are circumferentially staggered. The winding coils 13 are wound around the stator core 20, forming three winding groups.

[0175] Specific Example 1 (not shown)

[0176] The winding coil is wound on the stator teeth, and the same winding coil is wound on two adjacent stator teeth connected by the stator tooth shoes or the stator yoke.

[0177] Furthermore, the stator core is an integrated structure, that is, the stator core is an integral structure. After the insulating frame and the stator core are connected, the winding coils are respectively wound on the three stator teeth arranged at intervals, and finally three groups of windings A, B, and C are formed.

[0178] Specific Example 2

[0179] The difference from Example 1 is that: Figure 12 and Figure 13 As shown, the stator core is a split structure, including three splicing parts, which are spliced ​​on three stator yoke sections. The insulation is also a split structure. Connect the insulation frame and the splicing part of each stator core, and after winding the wires (as shown in the figure), the stator core is a split structure. Figure 12 As shown) and then assembled into a whole (as shown Figure 13 As shown), three groups of windings A, B, and C are finally formed.

[0180] Specific Example 3

[0181] The difference from the specific example 2 is that the splicing is at the junction of the stator yoke segment and the stator tooth body, such as Figure 14 and Figure 15 shown.

[0182] Specific Example 4 (not shown in the figure)

[0183] The difference from Specific Example 1 is that the stator core is a split structure, including three splicing parts, which are spliced ​​at the intersection of the stator yoke segment and the stator tooth body. The insulation is also a split structure. An insulating frame is inserted into the winding tool, and multiple winding coils are wound on the insulating frame along a preset direction. Multiple insulating frames with winding coils are inserted into the stator yoke segments. After all stator yoke segments are inserted with windings, the multiple splicing parts are connected to form three winding groups A, B, and C.

[0184] In the present invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless expressly limited otherwise. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0185] In the description of the present invention, it should be understood that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0186] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these 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 any one or more embodiments or examples.

[0187] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A stator assembly, characterized in that: include: A stator core, the stator core comprising a stator tooth portion and a stator yoke portion; the stator tooth portion comprising at least one stator tooth shoe and at least two stator tooth bodies arranged along the circumference of the stator core; A winding coil is wound around the stator teeth; an insulating member connected to the stator core, located between the winding coil and the stator core, and used to isolate the winding coil from the stator core; The stator yoke has a notch, and the stator yoke includes at least one stator yoke segment; the two ends of any stator tooth body are respectively connected to the stator tooth shoe and the stator yoke segment, and any two adjacent stator tooth bodies are connected through the stator tooth shoe or the stator yoke segment, and the stator tooth shoe of the stator tooth portion and the stator yoke segment of the stator yoke portion are staggered along the circumferential direction of the stator core; and the same winding coil is wound on two adjacent stator tooth bodies connected through the stator tooth shoe or the stator yoke, the number of the winding coils is multiple, and the winding directions of the multiple winding coils are the same; The stator core includes at least two splicing parts, and the at least two splicing parts are spliced ​​together to form the stator core.

2. The stator assembly according to claim 1, characterized in that The two stator teeth wound with the same winding coil are parallel to each other; or The two stator teeth bodies wound with the same winding coil are arranged in a V shape.

3. The stator assembly according to claim 1 or 2, characterized in that: The stator tooth shoe protrudes from the connected stator tooth body along the circumference of the stator core; and / or The stator yoke segment protrudes from the connected stator tooth body along the circumferential direction of the stator core.

4. The stator assembly according to claim 1 or 2, characterized in that: The stator tooth body extends in the radial direction of the stator core; and / or The stator tooth shoe extends along the circumference of the stator core; and / or The stator yoke segment is located radially outside or radially inside the stator tooth shoe.

5. The stator assembly according to claim 1 or 2, characterized in that: The number of the stator yoke segments is at least two, the number of the stator tooth shoes is equal to the number of the stator yoke segments, and the stator yoke segments and the stator tooth shoes are arranged alternately along the circumference of the stator core.

6. The stator assembly according to claim 1 or 2, characterized in that: The stator yoke segment is arc-shaped or straight-line-shaped; and / or The stator tooth shoe is in an arc shape or a straight line shape.

7. The stator assembly according to claim 1 or 2, characterized in that: Each of the splicing parts is formed by laminating a plurality of punching sheets.

8. The stator assembly according to claim 7, characterized in that At least part of the spliced ​​portion includes two stator teeth wound with the same winding coil.

9. The stator assembly according to claim 7, characterized in that The insulating member and the stator core are of a split structure, and the insulating member is of a split structure, and the insulating member includes at least two insulating parts, and the at least two insulating parts correspond one-to-one to the multiple splicing parts of the stator core, so that: The winding coil is suitable for being wound on the insulating portion by a winding tool, and the insulating portion is connected to the corresponding splicing portion after the winding operation is completed; or The winding coil is suitable for being wound on the splicing portion after the insulating portion is connected to the corresponding splicing portion.

10. The stator assembly according to claim 7, characterized in that Recording the splicing position of the at least two splicing parts as the splicing position of the stator core; Wherein, the stator tooth body and the stator yoke segment are constructed as a split structure, and the splicing portion includes the intersection of the stator tooth body and the stator yoke segment; and / or The stator yoke segment is constructed as at least two yoke segments spliced ​​together along the circumference of the stator core, and the splicing portion includes a junction of the at least two yoke segments; and / or The stator tooth shoe is constructed as at least two tooth shoe segments spliced ​​together along the circumferential direction of the stator core, and the splicing portion includes a junction of the at least two tooth shoe segments.

11. The stator assembly according to claim 7, wherein: One of the two adjacent splicing parts is provided with a convex part, and the other is provided with a concave part adapted to the convex part. The convex part and the concave part cooperate with each other to splice and connect the two adjacent splicing parts.

12. The stator assembly according to claim 11, characterized in that Splicing bosses are provided at both circumferential ends of the splicing portion. The splicing bosses protrude from the splicing portion in the radial direction of the stator core. The splicing bosses are provided with the convex portion or the concave portion.

13. The stator assembly according to claim 1 or 2, characterized in that: The stator core is an integrated structure, and is formed by stacking a plurality of punching sheets.

14. The stator assembly according to claim 13, wherein: The insulating member is connected to the stator core to form an integrated structure, so that the winding coil is suitable for being wound on the stator tooth body after the insulating member and the stator core form the integrated structure.

15. The stator assembly according to claim 13, wherein: The stator core is an integrated structure formed by welding; The side wall of the stator yoke segment is provided with at least one protrusion or recess, and the welding position of the stator core is provided at the protrusion or recess.

16. A motor, characterized in that: include: The stator assembly according to any one of claims 1 to 15; and The rotor assembly is arranged concentrically with the stator assembly.

17. The motor according to claim 16, characterized in that The number of stator yoke segments of the stator assembly is three, the number of stator tooth shoes of the stator assembly is three, and the number of stator tooth bodies of the stator assembly is six; The rotor includes a permanent magnet ring, which is an integrated structure or a split-type spliced ​​structure. The permanent magnet ring is a two-pole permanent magnet ring, a four-pole permanent magnet ring, or an eight-pole permanent magnet ring.

18. An electromechanical device, characterized in that: include: Equipment body; and The motor according to claim 16 or 17, provided in the device body.

19. The electromechanical device according to claim 18, wherein: The electromechanical equipment is household appliances, medical equipment, power generation and energy storage equipment, chemical detection and material wind power equipment or unmanned aerial vehicles.

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