CN113206555B

CN113206555B - Stator assembly, motor and electromechanical device

Info

Publication number: CN113206555B
Application number: CN202010079082.9A
Authority: CN
Inventors: 武谷雨; 吴迪; 龚黎明
Original assignee: Guangdong Welling Motor Manufacturing Co Ltd; Midea Welling Motor Technology Shanghai Co Ltd
Current assignee: Guangdong Welling Motor Manufacturing Co Ltd; Midea Welling Motor Technology Shanghai Co Ltd
Priority date: 2020-02-03
Filing date: 2020-02-03
Publication date: 2022-07-12
Anticipated expiration: 2040-02-03
Also published as: CN113206555A

Abstract

The invention provides a stator assembly, a motor and electromechanical equipment. The stator assembly includes: a stator core including a stator yoke portion and a stator tooth portion; the stator yoke comprises at least one bar-shaped stator yoke segment; the stator tooth part comprises at least one stator tooth shoe and at least two stator tooth bodies; at least two stator tooth bodies are arranged along the circumferential direction of the stator core; two ends of any stator tooth body are respectively connected with the stator yoke sections and the stator tooth shoes, any two adjacent stator tooth bodies are connected through the stator tooth shoes or the stator yoke sections, and the stator tooth shoes of the stator tooth parts and the stator yoke sections of the stator yoke parts are arranged in a staggered mode along the circumferential direction of the stator iron core; the winding coils are wound on the plurality of stator tooth bodies at intervals so that one of any two adjacent stator tooth bodies is wound with the winding coil; and the insulating part is connected with the stator core and positioned between the winding coil and the stator core. This application has reduced stator core's weight and manufacturing cost, and has reduced product cost.

Description

Stator assembly, motor and electromechanical device

Technical Field

The invention relates to the technical field of motors, in particular to a stator assembly, a motor and electromechanical equipment.

Background

In the existing motor, the structure of the stator core is generally: set up stator tooth portion on complete annular stator yoke portion, stator tooth portion include a plurality of stator tooth bodies and with a plurality of stator tooth body one-to-one's stator tooth boots, whole stator core weight is great, is unfavorable for the lightweight of motor, and the cost is higher.

Disclosure of Invention

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.

A second object of the present invention is to provide an electric machine comprising the above stator assembly.

A third object of the invention is to provide an electromechanical device comprising the above-mentioned motor.

In order to achieve the above object, a stator assembly according to a first aspect of the present invention includes: a stator core including a stator yoke portion and a stator tooth portion; the stator tooth part comprises at least one stator tooth shoe and at least two stator tooth bodies; the at least two stator tooth bodies are arranged along the circumferential direction of the stator core; the winding coils are wound on the plurality of stator tooth bodies at intervals, so that the winding coils are wound on one of any two adjacent stator tooth bodies; the insulating part is connected with the stator core, positioned between the winding coil and the stator core and used for isolating the winding coil from the stator core; wherein the stator yoke comprises at least one bar-shaped stator yoke segment; two ends of any stator tooth body are respectively connected with the stator tooth shoes and the stator yoke sections, any two adjacent stator tooth bodies are connected through the stator yoke sections or the stator tooth shoes, and the stator yoke sections of the stator yoke sections and the stator tooth shoes of the stator tooth parts are arranged in a staggered mode along the circumferential direction of the stator iron core.

According to the stator assembly provided by the technical scheme of the first aspect of the invention, the stator tooth shoes and the stator yoke sections which are staggered along the circumferential direction of the stator core are used for connecting the plurality of stator tooth bodies together, so that the stator yoke part and the stator tooth parts are connected into a whole. In other words, any two adjacent stator tooth bodies are connected into a whole only through the stator tooth shoes or the stator yoke sections, and for any two adjacent stator tooth bodies connected through the stator tooth shoes, the ends of the two stator tooth bodies facing the stator yoke section are not connected through the stator yoke sections, so that the stator yoke section is disconnected and has a gap between the two stator tooth bodies. Consequently, stator yoke portion in this application is non-annular structure, compares in the annular stator yoke portion among the prior art, has reduced stator yoke portion's circumference size to reduce stator core's weight, also be favorable to reducing the size of the insulating part that links to each other with stator core, be favorable to the lightweight of motor, also reduced the manufacturing cost of product simultaneously. In addition, the gap position of the stator yoke part is convenient for air flow to pass through, and is favorable for heat dissipation inside the motor, so that the use reliability of the motor is improved.

And the winding coil is wound on the plurality of stator tooth bodies at intervals, and only one of any two adjacent stator tooth bodies is wound with the winding coil, so that compared with the scheme that all the tooth bodies are wound with the winding coil, the scheme obviously reduces the number of the winding coils, further reduces the product cost, is favorable for reducing the heat productivity of the motor, and further improves the use reliability of electric elements such as internal chips of the motor.

Of course, the winding coil can also be wound on the stator yoke part to form an annular winding, and an air duct for air flow to pass through is formed between two adjacent stator tooth bodies, so that the heat dissipation of the motor is reduced, and the use reliability of electric elements such as the motor inner core sheet is improved.

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

in any technical scheme, the stator tooth shoes protrude out of the connected stator tooth bodies along the circumferential direction of the stator core; and/or the stator yoke section protrudes out of the connected stator tooth body along the circumferential direction of the stator iron core.

The stator tooth boots protrude out of the connected stator tooth bodies along the circumferential direction of the stator iron core, so that the adjacent stator tooth bodies are convenient to connect, the area of the stator tooth boots is increased, and the matching effect of the stator iron core and the rotor assembly is improved.

The stator yoke section is convenient for connect adjacent stator tooth body along stator core's circumference protrusion in the stator tooth body that links to each other, also is favorable to increasing the circumference length of stator yoke portion, and then improves the intensity and the reliability of stator yoke portion.

In any of the above technical solutions, the stator tooth body extends along a radial direction of the stator core; and/or the stator tooth shoes extend along the circumferential direction of the stator core; and/or the stator yoke segments are located radially outside or radially inside the stator tooth shoes.

The stator tooth body extends along the radial direction of the stator iron core to form a radial motor.

The stator tooth boots extend along the circumferential direction of the stator core, so that the adjacent two stator tooth bodies can be conveniently connected, and the axial size of a product can be reduced.

The stator yoke section is located the radial outside of stator tooth boots, can form inner rotor motor with rotor assembly cooperation. Because inner rotor motor's stator yoke portion radius is great, therefore adopt the scheme of this application to be favorable to showing the circumference size that reduces stator yoke portion, and then show reduction motor weight and cost. Or the stator yoke section can also be positioned at the radial inner side of the stator tooth shoe, so that the stator core can be matched with the rotor assembly to form the outer rotor motor, and the weight and the cost of the outer rotor motor can also be reduced.

In any one of the above technical solutions, the number of the stator yoke sections is at least two, the number of the stator tooth shoes is equal to that of the stator yoke sections, and the stator yoke sections and the stator tooth shoes are staggered one by one along the circumferential direction of the stator core.

A plurality of stator yoke sections and a plurality of stator tooth boots are crisscross the arranging one by one along stator core's circumference, form regular structure, compare in the annular yoke portion among the prior art, and stator yoke portion reduces half, is favorable to showing reduction motor weight and cost.

In any of the above technical solutions, the stator yoke section is arc-shaped or straight-shaped; and/or the stator tooth shoes are arc-shaped or straight-shaped.

The stator yoke section is arc-shaped, has regular structure and is convenient to machine and form.

The stator yoke section is sharp, and the structure is regular, and the machine-shaping of being convenient for, and compare in the scheme of arc line shape, be favorable to reducing stator core's radial dimension, and then reduce the radial dimension of motor.

The stator tooth shoes are in an arc shape or a straight shape, and are regular in structure and convenient to machine and form. And the stator yoke section and the stator tooth shoes can be interchanged in the arrangement, so that the stator core can be used for an inner rotor motor (the inner side is the stator tooth shoes, and the outer side is the stator yoke) and an outer rotor motor (the inner side is the stator yoke, and the outer side is the stator tooth shoes), and the application range of the stator core is expanded.

In any one of the above technical solutions, the number of the winding coils is multiple, and the winding directions of the multiple winding coils are the same.

The same winding direction is adopted, so that the winding difficulty is reduced, and the winding coils are convenient to be connected with each other according to the requirement.

In some technical schemes of the invention, the stator core comprises at least two splicing parts, the at least two splicing parts are spliced with each other to form the stator core, and each splicing part is formed by laminating a plurality of punching sheets.

The split of the stator core is divided into at least two splicing parts, each splicing part is formed by laminating a plurality of punching sheets, the punching sheet size of the single splicing part is smaller, the reduction of the waste amount generated by punching sheets is facilitated, the utilization rate of raw materials is improved, and the production cost is reduced. Meanwhile, the scheme is convenient for selecting winding and splicing or splicing and winding according to needs, and is favorable for simplifying the winding process and improving the assembly efficiency. Further, for a single splicing part, a protruding part or a recessed part can be arranged, a welding position is arranged at the protruding part or the recessed part, and the punching sheets are kept together through welding to form the splicing part.

In the above technical solution, at least part of the splicing portion includes at least part of the stator tooth body and the stator tooth shoe around which the winding coil is wound.

In this scheme, single concatenation portion is including the stator tooth body around being equipped with the winding coil and at least partly of stator tooth boots, is convenient for carry out the wire winding effect earlier to single concatenation portion as required, and at least partly of stator tooth boots can prevent that the winding coil deviates from the stator tooth body, then splice a plurality of concatenation portions again fixed can, be favorable to reducing the wire winding degree of difficulty like this, improve assembly efficiency. Simultaneously, compare in single concatenation portion including the scheme of the stator tooth body that is equipped with the winding coil and at least partly of stator yoke section, the size of stator tooth boots is less relatively in this scheme, thus is favorable to reducing the size of the concatenation portion of wire winding operation, further reduces the wire winding degree of difficulty.

In the above technical scheme, the insulator with stator core is split type structure, just the insulator is split type structure, the insulator includes two at least insulating parts, two at least insulating parts with a plurality of splice one-to-one of stator core to make: the winding coil is suitable for being wound on the insulating part through a winding tool, and the insulating part is connected with the corresponding splicing part after the winding operation is finished; or the winding coil is suitable for being wound on the splicing parts after the insulation parts are connected with the corresponding splicing parts.

The insulating part and the stator core are of a split structure, are formed separately and then are assembled. And, the insulating part also is split type structure, and the split is two at least insulating parts, with a plurality of concatenation portions one-to-one of stator core. Like this, in the production process, can be as required earlier the wire winding and splice the equipment to stator core again, be favorable to reducing the wire winding degree of difficulty to improve assembly efficiency. Compare in direct wire winding on stator core, then connect the scheme of stator core and insulating part, this scheme can prevent that stator core atress is too big and take place bending deformation when direct wire winding operation on stator core, is favorable to improving the stability of stator core shape. Specifically, can overlap the insulating part on the winding frock earlier, along predetermineeing the direction coiling winding coil, treat that the wire winding is accomplished the back, install the insulating part on the concatenation portion, then with a plurality of concatenations portion concatenation together can. Or, the insulating part can be installed on the splicing part to form an assembly, then a winding coil is wound on the assembly formed by the insulating part and the splicing part along the preset direction, and after the winding is completed, the splicing parts are spliced together.

In the above technical solution, the splicing positions of the at least two splicing parts are marked as the splicing positions of the stator core; wherein the stator tooth body and the stator yoke section are constructed in a split structure, and the splice comprises an intersection of the stator tooth body and the stator yoke section; and/or the stator yoke segments are configured as at least two yoke segments being spliced to each other in a circumferential direction of the stator core, the splice comprising an intersection of the at least two yoke segments; and/or the stator tooth shoes are configured as at least two tooth shoe segments which are spliced with each other along the circumferential direction of the stator core, wherein the splicing position comprises the intersection position of the at least two tooth shoe segments.

The concatenation department of stator core also is stator core's division department, promptly: and breaking the stator core along the splicing part to form at least two splicing parts on the stator core. In other words, the stator core is divided and disconnected along at least one part of the junction of the stator tooth body and the stator yoke section, the stator yoke section and the stator tooth shoe to form a split structure.

The stator tooth body and the stator yoke section are constructed into a split structure, are separately formed and then are spliced together, and at least one part of a splicing part is formed at the joint of the stator tooth body and the stator yoke section. According to the scheme, the first tooth part is convenient to wind according to needs, and then the stator yoke section completing the winding operation is spliced with the stator tooth body, so that the winding process is simplified, and the assembly efficiency is improved. Meanwhile, the structure of a single stator yoke section is relatively regular, and the punching sheet of the single stator yoke section generates less waste during processing and forming, so that the waste amount of raw materials is further reduced, and the utilization rate of the raw materials is further improved.

Construct two at least yoke sections with the stator yoke section, a plurality of yoke sections splice each other along stator core's circumference, are convenient for design two yoke sections, two stator tooth bodies and stator tooth boots into a whole as required, only need during then the assembly with adjacent yoke section along circumference equipment can, be favorable to reducing the quantity of concatenation portion, reduce the concatenation position to improve assembly efficiency.

The stator tooth boots are constructed into at least two tooth boot sections, and the plurality of tooth boot sections are mutually spliced along the circumferential direction of the stator core, so that the two tooth boot sections, the two stator tooth bodies and the stator yoke section are designed into a whole body as required, and the adjacent tooth boot sections are assembled along the circumferential direction during assembly, thereby being beneficial to reducing the number of spliced parts, reducing the splicing positions and improving the assembly efficiency.

In the above technical scheme, one of the two adjacent splicing parts is provided with a convex part, the other splicing part is provided with a concave part matched with the convex part, and the convex part and the concave part are in concave-convex fit so as to enable the two adjacent splicing parts to be spliced and connected.

The adjacent two splicing parts are assembled through the matching of the convex part and the concave part, the assembly is convenient, and the assembly efficiency is further improved. Specifically, the shape of the convex portion may be, but is not limited to: semi-circular, triangular, dovetail, etc.

In the above technical scheme, the two circumferential ends of the splicing part are provided with splicing bosses, the splicing bosses protrude from the splicing part along the radial direction of the stator core, and the splicing bosses are provided with the convex parts or the concave parts.

Set up the concatenation boss at the circumference both ends of concatenation portion to establish convex part or concave part on the concatenation boss, then aim at the concatenation boss of adjacent concatenation portion during the assembly, make the convex part imbed the concave part one by one, can realize the circumference equipment of a plurality of concatenation portions, convenient assembling is swift. Simultaneously, because concatenation boss is along stator core's radial protrusion in concatenation portion, can not lead to the fact the influence to the circumferential structure of concatenation portion, be favorable to guaranteeing the integrality of concatenation portion circumferential structure, and then reduce the influence to the magnetic circuit. Such as: to the aforesaid constitute the scheme of two at least yoke sections with the stator yoke section, can design into a whole with two yoke sections, two stator tooth bodies and stator tooth boots, set up the concatenation boss respectively at the tip that two yoke sections deviate from, a plurality of concatenation portions directly through the butt joint of concatenation boss can, simple swift.

In some technical schemes of the invention, the stator core is of an integrated structure and is formed by laminating a plurality of punching sheets.

Stator core formula structure as an organic whole directly is folded by a plurality of towards the piece and is pressed and form, then only need according to stator core's shape select the piece towards of adaptation can, then utilize modes such as welding or gluing to fold a plurality of towards the piece and press and keep together, can obtain stator core, simple process, easily shaping.

In the above technical solution, the insulating member and the stator core are connected 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.

The insulating part is connected with the stator core to form an integral structure, and the insulating part and the stator core are not separable, need be connected as an organic whole with the insulating part earlier in the production process, and the insulating part can be moulded plastics on the stator core through injection moulding's mode specifically, then wire winding operation is carried out. The scheme can effectively ensure the connection reliability of the insulating part and the stator core, and further improve the use reliability of the motor.

In the technical scheme, the stator core is of an integrated structure formed by welding; the side wall of the stator yoke section is provided with at least one protruding part or a depressed part, and the welding position of the stator core is arranged at the protruding part or the depressed part.

Establish at least one bulge or depressed part at the lateral wall of stator yoke section, establish welding position in this bulge or depressed part department, then directly weld along this bulge or depressed part during the welding, can be in the same place a plurality of towards the piece welding, the welding seam that obtains is straighter, and is comparatively pleasing to the eye, also can reduce the influence of welding seam to magnetic circuit as far as possible.

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

In any of the above technical solutions, the winding coils are connected in a star or triangle manner. Of course, the present invention is not limited to these two connection methods, and other connection methods may be used.

A technical solution of a second aspect of the present invention provides a motor, including: the stator assembly according to the first aspect; and a rotor assembly concentrically arranged with the stator assembly.

The motor provided by the technical scheme of the second aspect of the present invention includes the stator assembly described in the technical scheme of the first aspect, so that all the beneficial effects of any one of the above technical schemes are achieved, and details are not repeated herein.

The rotor assembly can be sleeved on the inner side of the stator assembly to form an inner rotor motor, and can also be sleeved on the outer side of the stator assembly to form an outer rotor motor.

In the above technical solution, the number of the stator yoke sections of the stator assembly is three, the number of the stator tooth shoes of the stator assembly is three, and the number of the stator tooth bodies of the stator assembly is six; the rotor assembly comprises a permanent magnet ring, the permanent magnet ring is of an integrated structure or a split type splicing structure, and the permanent magnet ring is a two-pole permanent magnet ring or a four-pole permanent magnet ring or an eight-pole permanent magnet ring.

The motor of this scheme's structure is comparatively simple, comparatively commonly uses, uses the reliability high. Of course, the number of the stator yoke sections, the number of the stator tooth shoes, the number of the stator tooth bodies and the number of poles of the permanent magnet rings are not limited to the above scheme, and can be adjusted according to requirements in the actual production process.

A third aspect of the present invention provides an electromechanical device, including: an apparatus main body; and the motor according to the second aspect of the present invention is provided in the apparatus main body.

The electromechanical device provided by the technical solution of the third aspect of the present invention includes the motor according to the technical solution of the second aspect, so that all the advantages of the technical solution are achieved, and details are not repeated herein.

In the technical scheme, the electromechanical equipment is household appliances, medical instruments, power generation and energy storage equipment, chemical detection and substance wind power equipment or an unmanned aerial vehicle.

Of course, the electromechanical device is not limited to the above-described device, and may be other devices using a motor.

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.

Drawings

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

fig. 1 is a schematic structural view of a stator core according to an embodiment of the present invention;

FIG. 2 is a schematic view of a splice according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a stator core formed by splicing the splices shown in FIG. 2;

fig. 4 is a schematic structural view of two splicing parts of a stator core according to an embodiment of the present invention;

FIG. 5 is a schematic view of a stator core formed by splicing the structure shown in FIG. 4;

fig. 6 is a schematic structural view of two splicing parts of a stator core according to an embodiment of the present invention;

FIG. 7 is a schematic view of a stator core formed by splicing the structure shown in FIG. 6;

fig. 8 is a schematic structural view of a spliced portion of a stator core according to an embodiment of the present invention;

FIG. 9 is a schematic structural view of a stator core formed by splicing the structure shown in FIG. 8;

fig. 10 is a schematic structural view of a spliced portion of a stator core according to an embodiment of the present invention;

FIG. 11 is a schematic structural view of a stator core formed by splicing the structure shown in FIG. 10;

fig. 12 is a schematic structural diagram of a motor according to an embodiment of the present invention;

fig. 13 is an exploded view of a stator assembly according to an embodiment of the present invention;

figure 14 is a schematic structural view of a motor formed by the assembly of the stator assembly and the rotor assembly shown in figure 13;

FIG. 15 is an exploded view of a stator assembly according to one embodiment of the present invention;

figure 16 is a schematic structural view of a motor formed by the assembly of the stator assembly and the rotor assembly shown in figure 15;

FIG. 17 is a schematic block diagram of a mechatronic device in accordance with one embodiment of the invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 17 is:

1, a motor;

10 stator assembly, 14 rotor assembly;

20 stator cores, 11 splicing parts, 12 insulators and 13 winding coils;

111, 1111, welding positions, 1112, splicing bosses, 1113 convex parts, 1114 concave parts, 1115, 1116, 112, 1121, 1122 and 1123 tooth shoe sections;

2 electromechanical device, 202 device body.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A stator assembly, an electric machine, and an electromechanical device according to some embodiments of the present invention are described below with reference to fig. 1-17.

Embodiments of the first aspect of the present invention provide a stator assembly 10, comprising: stator core 20, winding coil 13, and insulator 12.

Specifically, the stator core 20 includes a stator yoke portion 111 and stator teeth portions 112. The stator yoke 111 includes at least one bar-shaped stator yoke segment 1115, as shown in fig. 2, 4, and 6. Stator tooth 112 includes at least one stator tooth shoe 1122 and at least two stator tooth bodies 1121 as shown in fig. 1, 3, 5, 7, 9, and 11. At least two stator tooth bodies 1121 are arranged along the circumferential direction of the stator core 20, and both ends of any stator tooth body 1121 are connected to the stator yoke section 1115 and the stator tooth shoe 1122, respectively.

Any two adjacent stator tooth bodies 1121 are connected by a stator tooth shoe 1122 or a stator yoke segment 1115 (or any two adjacent stator tooth bodies 1121 share one stator tooth shoe 1122 or one stator yoke segment 1115), as shown in fig. 1, 3, 5, 7, 9 and 11, and the stator yoke segments 1115 of the stator yoke 111 and the stator tooth shoes 1122 of the stator tooth portions 112 are arranged in a staggered manner along the circumferential direction of the stator core 20.

The winding coil 13 is wound around the plurality of stator tooth bodies 1121 at intervals such that one of any two adjacent stator tooth bodies 1121 is wound with the winding coil 13, as shown in fig. 12 to 16.

The insulating member 12 is connected to the stator core 20, and is located between the winding coil 13 and the stator core 20, for isolating the winding coil 13 from the stator core 20.

The stator assembly 10 according to the embodiment of the first aspect of the present invention connects the plurality of stator tooth bodies 1121 together by using the stator tooth shoes 1122 and the stator yoke segments 1115 arranged in a staggered manner in the circumferential direction of the stator core 20, so that the stator yoke portion 111 and the stator tooth portion 112 are connected into a whole.

In other words, any two adjacent stator tooth bodies 1121 are connected into a whole only by the stator tooth shoes 1122 or the stator yoke sections 1115, and for any two adjacent stator tooth bodies 1121 connected by the stator tooth shoes 1122, the ends of the two stator tooth bodies 1121 facing the stator yoke 111 are not connected by the stator yoke sections 1115, so that the stator yoke 111 is disconnected and has a gap between the two stator tooth bodies 1121.

Therefore, stator yoke portion 111 in this application is the non-annular structure, compares in annular stator yoke portion 111 among the prior art, has reduced stator yoke portion 111's circumferential dimension to reduced stator core 20's weight, also be favorable to reducing the size of insulator 12 that links to each other with stator core 20, be favorable to the lightweight of motor 1, also reduced the manufacturing cost of product simultaneously.

In addition, the notch portion of the stator yoke portion 111 facilitates airflow to pass through, and is beneficial to heat dissipation inside the motor 1, thereby being beneficial to improving the use reliability of the motor 1.

In addition, the winding coils 13 are wound on the plurality of stator tooth bodies 1121 at intervals, and only one of any two adjacent stator tooth bodies 1121 is wound with the winding coil 13, so that compared with a scheme in which all the tooth bodies are wound with the winding coils 13, the scheme remarkably reduces the number of the winding coils 13, further reduces the product cost, is also beneficial to reducing the heat productivity of the motor 1, and further improves the use reliability of electric elements such as chips inside the motor 1.

In other embodiments of the present invention, the winding coil 13 is wound on the stator yoke 111, and an air duct for passing air flow is formed between two adjacent stator tooth bodies 1121, which is beneficial to reducing heat dissipation of the motor 1, and further improving the reliability of using electrical elements such as core sheets in the motor 1.

The insulating member 12 is generally a frame structure, i.e., an insulating frame, and can be connected to the stator core 20 by injection molding; the insulating frame may also be separately machined, fastened to the stator core 20, or inserted into the stator core 20.

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

Example one

The stator core 20 is of a unitary structure, as shown in fig. 1. The stator core 20 is formed by laminating a plurality of punched sheets.

Stator core 20 formula structure as an organic whole directly is folded by a plurality of punching sheets and is pressed and form, then only need according to stator core 20 the shape select the punching sheet of adaptation can, then utilize modes such as welding or gluing to fold a plurality of punching sheets and press and keep together, can obtain stator core 20, simple process, easily shaping.

Further, the stator core 20 is a welded and formed integrated structure. The side wall of the stator yoke segment 1115 is provided with at least one protrusion or recess where the weld 1111 of the stator core 20 is located, as shown in fig. 1.

At least one protruding portion or recessed portion is formed in the side wall of the stator yoke section 1115, the welding position 1111 is formed in the protruding portion (as shown in fig. 1) or the recessed portion, and then the plurality of stamped sheets can be welded together by directly welding along the protruding portion or the recessed portion during welding, so that the obtained welding line is straight and attractive, and the influence of the welding line on a magnetic circuit can be reduced as much as possible.

Example two

The stator core 20 includes at least two splices 11, as shown in fig. 2 to 11. At least two splicing parts 11 are spliced with each other to form the stator core 20. Each splicing part 11 is formed by laminating a plurality of punching sheets.

The stator core 20 is split into at least two splicing parts 11, each splicing part 11 is formed by laminating a plurality of punching sheets, the punching sheet size of each single splicing part 11 is small, and reduction of the waste amount generated by punching sheets is facilitated, so that the utilization rate of raw materials is improved, and the production cost is reduced.

Meanwhile, the scheme is convenient for selecting winding and splicing or splicing and winding according to needs, and is favorable for simplifying the winding process and improving the assembly efficiency.

Further, for a single splice 11, a protrusion or a recess may also be provided, and the welding location 1111 is provided at the protrusion or the recess, as shown in fig. 2, 4, 6, 8 and 10, and the splices 11 are formed by holding a plurality of punching sheets together by welding.

Further, at least part of the splice 11 includes at least a part of the stator tooth body 1121 and the stator tooth shoe 1122 around which the winding coil 13 is wound, as shown in fig. 13 and 15.

In this scheme, single concatenation portion 11 is including the stator tooth body 1121 and the at least part of stator tooth boots 1122 that are equipped with winding coil 13 around, is convenient for carry out the winding effect as required at first to single concatenation portion 11, and at least part of stator tooth boots 1122 can prevent winding coil 13 and deviate from stator tooth body 1121, then splice a plurality of concatenation portions 11 again and fix can, be favorable to reducing the wire winding degree of difficulty like this, improve assembly efficiency. Meanwhile, compared with the scheme that a single splicing part 11 comprises the stator tooth body 1121 provided with the winding coil 13 and at least one part of the stator yoke section, the size of the stator tooth shoe 1122 in the scheme is relatively small, so that the size of the splicing part 11 in the winding operation is favorably reduced, and the winding difficulty is further reduced.

At least one part of the stator tooth shoes 1122 is specifically: a complete stator tooth shoe 1122 (as shown in fig. 15) or a tooth shoe segment 1123 (as shown in fig. 13).

Specifically, all of the splices 11 include at least a part of the stator tooth body 1121 and the stator tooth shoe 1122 around which the winding coil 13 is wound, as shown in fig. 13 and 14.

Alternatively, the partial splice 11 includes at least a part of the stator tooth body 1121 and the stator tooth shoe 1122 around which the winding coil 13 is wound, and the partial splice 11 does not include at least a part of the stator tooth body 1121 and the stator tooth shoe 1122 around which the winding coil 13 is wound, as shown in fig. 15 and 16. In fig. 15 and 16, the splice 11 made of the stator yoke segments does not include at least a part of the stator tooth body 1121 or the stator tooth shoe 1122 around which the winding coil 13 is wound, and the splice 11 formed by two stator tooth bodies 1121 and one stator tooth shoe 1122 includes at least a part of the stator tooth body 1121 and the stator tooth shoe 1122 around which the winding coil 13 is wound.

Specifically, the splicing position of at least two splicing parts 11 is the splicing position of the stator core 20. Wherein, the stator tooth body 1121 and the stator yoke section 1115 are constructed in a split structure, as shown in fig. 4 to 7. The splice includes the intersection of stator tooth body 1121 and stator yoke segment 1115.

The splicing of the stator core 20 is also the division of the stator core 20, namely: the stator core 20 is broken along the splice such that the stator core 20 forms at least two splices 11. In other words, the stator core 20 is divided and disconnected along at least a part of the intersection between the stator tooth body 1121 and the stator yoke segment 1115, and the stator tooth shoes 1122, thereby forming a split structure.

The stator tooth body 1121 and the stator yoke section 1115 are constructed into a split structure, formed separately and then spliced together, so that the joint of the stator tooth body 1121 and the stator yoke section 1115 forms at least a part of the spliced part. According to the scheme, the teeth are wound at first according to needs, and then the stator yoke section 1115 for completing the winding operation is spliced with the stator tooth body 1121, so that the winding process is simplified, and the assembly efficiency is improved.

Meanwhile, the structure of the single stator yoke section 1115 is relatively regular, and waste generated during punching sheet processing and forming of the single stator yoke section 1115 is less, so that the waste amount of raw materials is further reduced, and the utilization rate of the raw materials is further improved.

EXAMPLE III

The difference from the second embodiment is that: the stator yoke segment 1115 is configured as at least two yoke segments 1116 spliced to each other in the circumferential direction of the stator core 20, as shown in fig. 8 to 11. The splice comprises the intersection of at least two yoke segments 1116.

Construct stator yoke section 1115 into two at least yoke sections 1116, a plurality of yoke sections 1116 splice each other along stator core 20's circumference, be convenient for design into a whole with two yoke sections 1116, two stator tooth bodies 1121 and stator tooth boots 1122 as required, then only need during the assembly with adjacent yoke section 1116 along circumference equipment can, be favorable to reducing the quantity of concatenation portion 11, reduce the concatenation position to improve assembly efficiency.

Example four

The difference from the second embodiment is that: the stator tooth shoes 1122 are configured as at least two tooth shoe segments 1123 that are spliced to each other in the circumferential direction of the stator core 20, as shown in fig. 2 and 3. The splice includes an intersection of at least two tooth shoe segments 1123.

The stator tooth shoes 1122 are constructed into at least two tooth shoe sections 1123, and the plurality of tooth shoe sections 1123 are mutually spliced along the circumferential direction of the stator core 20, so that the two tooth shoe sections 1123, the two stator tooth bodies 1121 and the stator yoke section 1115 are designed into a whole as required, and only the adjacent tooth shoe sections 1123 are required to be assembled along the circumferential direction during assembly, thereby being beneficial to reducing the number of spliced parts 11, reducing splicing positions and improving assembly efficiency.

In the second to fourth embodiments, further, one of the two adjacent splicing portions 11 is provided with a convex portion 1113, and the other splicing portion is provided with a concave portion 1114 matching with the convex portion 1113, as shown in fig. 2 to 11, the convex portion 1113 and the concave portion 1114 are in concave-convex fit to splice and connect the two adjacent splicing portions 11.

The assembly of two adjacent concatenation portions 11 through the cooperation realization of convex part 1113 with concave part 1114, it is comparatively convenient to assemble, is favorable to further improving assembly efficiency.

Specifically, the shape of the projection 1113 may be, but is not limited to: semi-circular (as shown in fig. 4-11), triangular, dovetail (as shown in fig. 2 and 3), etc.

Further, the splicing bosses 1112 are provided at both circumferential ends of the splicing portion 11, as shown in fig. 8 to 11, the splicing bosses 1112 protrude from the splicing portion 11 in the radial direction of the stator core 20, and the splicing bosses 1112 are provided with protrusions 1113 or recesses 1114.

Set up concatenation boss 1112 at the circumference both ends of concatenation portion 11 to establish convex part 1113 or concave part 1114 on concatenation boss 1112, then aim at the concatenation boss 1112 of adjacent concatenation portion 11 during the assembly, make convex part 1113 imbed concave part 1114 one by one, can realize the circumference equipment of a plurality of concatenation portions 11, convenient assembling is swift.

Meanwhile, the splicing boss 1112 protrudes out of the splicing part 11 along the radial direction of the stator core 20, so that the circumferential structure of the splicing part 11 is not affected, the integrity of the circumferential structure of the splicing part 11 is favorably ensured, and the influence on a magnetic circuit is further reduced.

Such as: for the scheme of configuring the stator yoke segment 1115 into at least two yoke segments 1116, the two stator tooth bodies 1121 and the stator tooth shoes 1122 can be designed into a whole, as shown in fig. 8 and 10, the end portions of the two yoke segments 1116 facing away from each other are respectively provided with the splicing bosses 1112, and the splicing portions 11 are directly butted through the splicing bosses 1112, so that the process is simple and fast.

In some embodiments of the present invention, further, the stator tooth shoes 1122 protrude from the connected stator tooth bodies 1121 along the circumferential direction of the stator core 20.

The stator tooth shoes 1122 protrude from the connected stator tooth bodies 1121 along the circumferential direction of the stator core 20, so that the adjacent stator tooth bodies 1121 are convenient to connect, the area of the stator tooth shoes 1122 is increased, and the matching effect of the stator core 20 and the rotor assembly 14 is further improved.

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

The stator yoke section 1115 protrudes from the connected stator tooth bodies 1121 along the circumferential direction of the stator core 20, so that the adjacent stator tooth bodies 1121 are connected conveniently, the circumferential length of the stator yoke portion 111 is increased, and the strength and reliability of the stator yoke portion 111 are improved.

In some embodiments of the present invention, further, stator tooth body 1121 extends in a radial direction of stator core 20, stator tooth shoes 1122 extend in a circumferential direction of stator core 20, and stator yoke segment 1115 is located on a radially outer side or a radially inner side of stator tooth shoes 1122.

Stator tooth body 1121 extends in the radial direction of stator core 20 to form radial motor 1. Of course, stator tooth 1121 may also extend in the axial direction of stator core 20 to form an axial motor.

The stator tooth shoes 1122 extend in the circumferential direction of the stator core 20, which not only facilitates connection between two adjacent stator tooth bodies 1121, but also facilitates reduction of the axial dimension of the product.

The stator yoke section 1115 is located radially outward of the stator tooth shoes 1122, and is capable of cooperating with the rotor assembly 14 to form the inner rotor motor 1. Because the radius of the stator yoke part 111 of the inner rotor motor 1 is larger, the scheme of the application is favorable for obviously reducing the circumferential size of the stator yoke part 111, and further obviously reducing the weight and the cost of the motor 1.

Alternatively, the stator yoke segment 1115 may be located radially inward of the stator tooth shoes 1122, so that the stator core 20 can be fitted to the rotor assembly 14 to form the outer rotor motor 1, and the weight and cost of the outer rotor motor can also be reduced.

In some embodiments of the present invention, the number of the stator yoke segments 1115 is at least two, the number of the stator tooth shoes 1122 is equal to the number of the stator yoke segments 1115, and the stator yoke segments 1115 and the stator tooth shoes 1122 are staggered one by one along the circumferential direction of the stator core 20, as shown in fig. 1, 3, 5, 7, 9 and 11.

The plurality of stator yoke segments 1115 and the plurality of stator tooth shoes 1122 are staggered one by one along the circumferential direction of the stator core 20 to form a regular structure, and compared with an annular yoke in the prior art, the number of stator yoke portions 111 is reduced by half, which is beneficial to significantly reducing the weight and cost of the motor 1.

In some embodiments of the present invention, the stator yoke segments 1115 are arcuate, as shown in fig. 4, 6, 8, and 10.

The stator yoke section 1115 is arc-shaped, has a regular structure and is convenient to machine and form.

In other embodiments of the present invention, the stator yoke segments 1115 are linear, as shown in fig. 2.

Stator yoke section 1115 is straight line shape, and the structure is regular, and the machine-shaping of being convenient for, and compare in the scheme of arc line shape, be favorable to reducing stator core 20's radial dimension, and then reduce motor 1's radial dimension.

In some embodiments of the present invention, stator tooth shoes 1122 are arcuate (as shown in FIG. 1) or linear (not shown).

The stator tooth shoes 1122 are arc-shaped or straight-shaped, have regular structures and are convenient to machine and form. In addition, the stator core 20 can be used for both an inner rotor motor (the inner side is the stator tooth shoes 1122, and the outer side is the stator yoke portion 111, as shown in fig. 12, 14 and 16) and an outer rotor motor (the inner side is the stator yoke portion 111, and the outer side is the stator tooth shoes 1122) by providing the stator yoke sections 1115 and the stator tooth shoes 1122 so as to be interchangeable, thereby widening the range of use of the stator core 20.

In some embodiments of the present invention, the number of the winding coils 13 is plural, and as shown in fig. 12 to 16, the winding directions of the plural winding coils 13 are the same.

The same winding direction is adopted, so that the winding difficulty is reduced, and the winding coils 13 are convenient to be connected with each other according to the requirement.

In one embodiment of the present invention, the insulator 12 is connected to the stator core 20 to form an integrated structure, as shown in fig. 12, so that the winding coil 13 is adapted to be wound on the stator tooth body 1121 after the insulator 12 is formed into the integrated structure with the stator core 20.

The insulating part 12 and the stator core 20 are connected to form an integral structure, which cannot be separated, the insulating part 12 and the stator core 20 need to be connected into a whole in the production process, the insulating part 12 can be specifically injected on the stator core 20 in an injection molding mode, and then the winding operation is performed. This scheme can effectively guarantee insulating part 12 and stator core 20's connection reliability, and then improves motor 1's use reliability.

In another embodiment of the present invention, the insulation member 12 and the stator core 20 are of a split structure, and the insulation member 12 is of a split structure, the insulation member 12 includes at least two insulation portions, and the at least two insulation portions correspond to the plurality of splicing portions 11 of the stator core 20 one to one, so that: the winding coil 13 is suitable for being wound on the insulating part through a winding tool, and the insulating part is connected with the corresponding splicing part 11 after the winding operation is finished.

In another embodiment of the present invention, the insulation 12 and the stator core 20 are of a split structure, and the insulation 12 is of a split structure, the insulation 12 includes at least two insulation portions, and the at least two insulation portions correspond to the plurality of splices 11 of the stator core 20 one to one, so that: the winding coil 13 is adapted to be wound on the splice 11 after the insulation is connected to the corresponding splice 11, as shown in fig. 13 to 16.

In the above two embodiments, the insulator 12 and the stator core 20 are of a split structure, separately formed, and then assembled. Moreover, the insulating member 12 is also a split structure, and is split into at least two insulating portions, which correspond to the plurality of splicing portions 11 of the stator core 20 one to one. Like this, in the production process, can be as required earlier the wire winding and then splice the equipment to stator core 20, be favorable to reducing the wire winding degree of difficulty to improve assembly efficiency.

Compared with the scheme that the stator core 20 is directly wound and then the stator core 20 and the insulating part 12 are connected, the scheme can prevent the stator core 20 from being subjected to overlarge stress and bending deformation during the direct winding operation on the stator core 20, and is favorable for improving the shape stability of the stator core 20.

Specifically, can overlap the insulating part on the winding frock earlier, along preset orientation coiling winding coil 13, treat the wire winding completion back, install the insulating part on concatenation portion 11, then with a plurality of concatenations portion 11 splice together can.

Or, the insulating portion may be first installed on the splicing portion 11 to form an assembly, then the winding coil 13 is wound on the assembly formed by the insulating portion and the splicing portion 11 along the preset direction, and after the winding is completed, as shown in fig. 13 and 15, the splicing portions 11 are spliced together, as shown in fig. 14 and 16.

In any of the above embodiments, the winding coil 13 has a single-wire structure or a multi-wire structure. In the specific production process, the method can be reasonably selected according to the needs.

In any of the above embodiments, the winding coils 13 are connected in a star or delta configuration. Of course, the connection method is not limited to these two connection methods, and other connection methods may be used.

An embodiment of the second aspect of the present invention provides a motor 1, as shown in fig. 12, 14 and 16, including: such as the stator assembly 10 and the rotor assembly 14 of the first aspect embodiment, are concentrically arranged with respect to the stator assembly 10.

The motor 1 provided by the embodiment of the second aspect of the present invention includes the stator assembly 10 of the embodiment of the first aspect, so that all the advantages of any of the above embodiments are provided, and details are not described herein again.

The rotor assembly 14 may be sleeved on the inner side of the stator assembly 10 to form the inner rotor motor 1, or may be sleeved on the outer side of the stator assembly 10 to form the outer rotor motor 1.

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 shoes 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 comprises a permanent magnet ring which is an integrated structure or a split type splicing structure, and the permanent magnet ring is a two-pole permanent magnet ring or a four-pole permanent magnet ring.

The motor 1 of this scheme's structure is comparatively simple, comparatively commonly used, and uses the reliability high.

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-mentioned schemes, and can be adjusted as needed in the actual production process.

An embodiment of a third aspect of the present invention provides an electromechanical device 2, as shown in fig. 17, comprising: an apparatus main body 202 and a motor 1 as in the embodiment of the second aspect are provided in the apparatus main body 202.

The electromechanical device 2 provided by the embodiment of the third aspect of the present invention includes the motor 1 of the embodiment of the second aspect, so that all the advantages of the above embodiments are provided, and details are not described herein again.

In the above embodiments, the electromechanical device 2 is a household appliance, a medical instrument, a power generation and energy storage device, a chemical detection and substance wind power device, or an unmanned aerial vehicle.

Of course, the electromechanical device 2 is not limited to the above-described devices, and may be other devices using the motor 1.

Specific examples will be described below with reference to fig. 12 to 16, and the assembly process of the motor 1 will be described in detail.

An electric machine 1 includes a stator assembly 10 and a rotor assembly 14. The stator assembly 10 includes a stator core 20, an insulating frame, and a winding coil 13. The stator core 20 includes three stator yoke segments 1115 uniformly arranged along the circumferential direction, three stator tooth shoes 1122 uniformly arranged along the circumferential direction, and six stator tooth bodies 1121 uniformly arranged along the circumferential direction, any two stator tooth bodies 1121 are connected into a whole only by the stator tooth shoes 1122 or the stator yoke segments 1115, and the three stator yoke segments 1115 and the three stator tooth shoes 1122 are arranged in a staggered manner one by one along the circumferential direction. The winding coils 13 are wound around the stator core 20 and form three sets of windings.

Concrete example 1

The winding coils are wound on the plurality of stator tooth bodies at intervals, so that one of any two adjacent stator tooth bodies is wound with the winding coil, as shown in fig. 12.

Further, as shown in fig. 12, the stator core is of an integrated structure, that is, the stator core is of an integrated 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 a1, B1, and C1 are formed.

Concrete example 2

The differences from the specific example 1 are: as shown in fig. 13 and 14, the stator core is a split structure, and includes three splicing portions, which are spliced on the three stator tooth shoes. The insulating part is also of a split structure. And connecting the insulation frame with the splicing part of each stator core, respectively winding (as shown in fig. 13), and splicing into a whole (as shown in fig. 14), and finally forming three groups of windings A1, B1 and C1.

Specific example 3

The difference from the specific example 2 is: the splice is at the intersection of the stator yoke section and the stator tooth body as shown in fig. 15 and 16.

Concrete example 4 (not shown in the figure)

The differences from the specific example 1 are: the stator core is of a split structure and comprises three splicing parts, and the splicing parts are positioned at the joint of the stator yoke section and the stator tooth body. The insulating part is also of a split structure. And sleeving an insulating frame on the winding tool, winding a plurality of winding coils on the insulating frame along a preset direction, respectively inserting a plurality of insulating frames provided with the winding coils into the stator yoke sections, and connecting the plurality of splicing parts after the windings are sleeved on all the stator yoke sections to finally form A, B, C three groups of windings.

In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A stator assembly, comprising:

a stator core including a stator yoke portion and a stator tooth portion; the stator tooth part comprises at least one stator tooth shoe and at least two stator tooth bodies; the at least two stator tooth bodies are arranged along the circumferential direction of the stator core;

the winding coils are wound on the plurality of stator tooth bodies at intervals, so that the winding coils are wound on one of any two adjacent stator tooth bodies;

the insulating piece is connected with the stator core, positioned between the winding coil and the stator core and used for isolating the winding coil from the stator core;

wherein the stator yoke comprises at least one bar-shaped stator yoke segment; two ends of any stator tooth body are respectively connected with the stator tooth shoe and the stator yoke section, any two adjacent stator tooth bodies are connected through the stator yoke section or the stator tooth shoe, and the stator yoke sections of the stator yoke section and the stator tooth shoes of the stator tooth section are arranged in a staggered mode along the circumferential direction of the stator iron core;

the stator yoke sections and the stator tooth shoes are arranged in a one-to-one staggered mode along the circumferential direction of the stator core;

the stator yoke section is arc-shaped or linear;

the stator core comprises at least two splicing parts, the at least two splicing parts are spliced with each other to form the stator core, and each splicing part is formed by laminating a plurality of punching sheets;

at least part of the splicing part comprises the stator tooth body wound with the winding coil and at least part of the stator tooth shoe;

recording the splicing positions of the at least two splicing parts as the splicing positions of the stator core;

wherein the stator yoke segments are configured as at least two yoke segments that are spliced to each other in a circumferential direction of the stator core, the splice comprising an intersection of the at least two yoke segments.

2. The stator assembly of claim 1,

the stator tooth shoes protrude out of the connected stator tooth bodies along the circumferential direction of the stator iron core; and/or

The stator yoke section protrudes out of the connected stator tooth body along the circumferential direction of the stator iron core.

3. The stator assembly of claim 1 or 2,

the stator tooth body extends along the radial direction of the stator iron core; and/or

The stator tooth shoes extend along the circumferential direction of the stator core; and/or

The stator yoke section is located radially outward or radially inward of the stator tooth shoes.

4. The stator assembly of claim 1 or 2,

the number of the stator yoke sections is at least two, and the number of the stator tooth shoes is equal to that of the stator yoke sections.

5. The stator assembly of claim 1 or 2,

the stator tooth shoes are arc-shaped or linear.

6. The stator assembly of claim 1 or 2,

the winding device comprises a plurality of winding coils, wherein the winding coils are wound in the same direction.

7. The stator assembly of claim 1,

the insulating part with stator core is split type structure, just the insulating part is split type structure, the insulating part includes two at least insulating parts, two at least insulating parts with a plurality of splice one-to-one of stator core to make:

the winding coil is suitable for being wound on the insulating part through a winding tool, and the insulating part is connected with the corresponding splicing part after the winding operation is finished; or

The winding coil is suitable for being wound on the splicing parts after the insulation parts are connected with the corresponding splicing parts.

8. The stator assembly of claim 1, wherein the stator tooth body and the stator yoke segment are configured as a split structure, the splice comprising an intersection of the stator tooth body and the stator yoke segment; and/or

The stator tooth shoes are configured as at least two tooth shoe segments that are spliced to each other in a circumferential direction of the stator core, the splice including an intersection of the at least two tooth shoe segments.

9. The stator assembly of claim 1,

one of the two adjacent splicing parts is provided with a convex part, the other splicing part is provided with a concave part matched with the convex part, and the convex part is in concave-convex fit with the concave part so that the two adjacent splicing parts are spliced and connected.

10. The stator assembly of claim 9,

the splicing part is provided with splicing bosses at two circumferential ends, the splicing bosses protrude out of the splicing part along the radial direction of the stator core, and the splicing bosses are provided with the convex parts or the concave parts.

11. The stator assembly of claim 1 or 2,

the stator core is of an integrated structure and is formed by laminating a plurality of punching sheets.

12. The stator assembly of claim 11,

the insulating part and the stator core are connected to form an integrated structure, so that the winding coil is suitable for being wound on the stator tooth body after the insulating part and the stator core form the integrated structure.

13. The stator assembly of claim 11,

the stator core is of an integrated structure formed by welding;

the side wall of the stator yoke section is provided with at least one protruding part or a depressed part, and the welding position of the stator core is arranged at the protruding part or the depressed part.

14. An electric machine, comprising:

the stator assembly of any of claims 1-13; and

a rotor assembly concentrically arranged with the stator assembly.

15. The electric machine of claim 14,

the stator assembly comprises three stator yoke sections, three stator tooth shoes and six stator tooth bodies, wherein the number of the stator yoke sections is three, and the number of the stator tooth shoes is three;

the rotor component comprises a permanent magnet ring, the permanent magnet ring is of an integrated structure or a split type splicing structure, and the permanent magnet ring is a two-pole permanent magnet ring or a four-pole permanent magnet ring or an eight-pole permanent magnet ring.

16. An electromechanical device, comprising:

an apparatus main body; and

a motor as claimed in claim 14 or 15, provided in the apparatus body.

17. The electromechanical device of claim 16,

the electromechanical equipment is household appliances, medical instruments, power generation and energy storage equipment, chemical detection and substance wind power equipment or unmanned aerial vehicles.