CN216564672U

CN216564672U - Stator module, motor and motorised valve

Info

Publication number: CN216564672U
Application number: CN202122099209.6U
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Sanhua Automotive Components Co Ltd
Current assignee: Zhejiang Sanhua Automotive Components Co Ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-05-17
Anticipated expiration: 2031-08-31

Abstract

The utility model provides a stator module and contain this stator module's motor, including stator core, skeleton and winding, stator core includes stator yoke portion and stator tooth portion, stator tooth portion includes the winding tooth, stator yoke portion and winding tooth are laminated and fixed through respective silicon steel sheet respectively, stator yoke portion is unanimous with the range upon range of direction of winding tooth, skeleton and the spacing connection of winding tooth, the winding is coiled in the periphery of skeleton, the winding tooth is arranged along the interior week of stator yoke portion, winding tooth and stator yoke portion fixed connection. The winding teeth are wound with the windings and then fixedly connected with the stator yoke, and space limitation is avoided between the stator yoke structure and the winding teeth and between the winding teeth during winding, so that improvement of the motor slot fullness rate of the stator assembly is facilitated, and improvement of the motor performance of the stator assembly is facilitated.

Description

Stator module, motor and motorised valve

Technical Field

The application relates to the electrical technology field, in particular to a stator assembly, a motor comprising the stator assembly and an electric valve comprising the stator assembly.

Background

The motor includes a stator assembly and a rotor assembly, the stator assembly including a stator core and a stator winding. Stator core generally forms required shape through the punching press by multilayer silicon steel sheet and folds the pressure again and obtain, stator core includes stator yoke portion and stator tooth portion, stator winding coils in stator tooth portion's periphery, stator tooth portion is influencing stator winding's coiling space and coiling mode with the shape structure of stator yoke portion, and then the full rate in groove of influence motor, and then influence the motor performance promotion, consequently how design a motor can improve the full rate in groove of motor, thereby it treats improvement technical problem to improve one to improve the motor performance.

SUMMERY OF THE UTILITY MODEL

The application aims to provide a stator assembly, a manufacturing method of the stator assembly, a motor comprising the stator assembly and an electric valve, which are beneficial to improving the slot filling rate of the motor and improving the performance of the motor.

In order to achieve the purpose, the following technical scheme is adopted in the application:

the utility model provides a stator module, includes stator core, skeleton and winding, stator core includes stator yoke portion and stator tooth, stator tooth includes the winding tooth, stator yoke portion with the winding tooth is respectively through respective silicon steel sheet range upon range of and fixed, stator yoke portion with the range upon range of direction of stacking of winding tooth is unanimous, the skeleton with the spacing connection of winding tooth, the winding coiling in the periphery of skeleton, the winding tooth along the inboard of stator yoke portion is arranged, the winding tooth with stator yoke portion fixed connection.

The manufacturing method of the stator assembly is characterized in that the stator assembly comprises the following processing steps: the stator yoke comprises a plurality of layers of first silicon steel sheets, the winding teeth comprise a plurality of layers of second silicon steel sheets, and the first silicon steel sheets and the second silicon steel sheets are formed by stamping and processing a plate;

laminating, riveting or welding and fixing the first silicon steel sheet to form the stator yoke; laminating, riveting or welding and fixing the second silicon steel sheet to form 2-3 winding teeth;

taking each winding tooth as an injection molding insert, forming a first assembly body with a framework at the periphery of the winding tooth through injection molding, or enabling the framework to comprise a first framework and a second framework, forming the first framework and the second framework through injection molding, placing the winding tooth between the first framework and the second framework, and connecting the first framework and the second framework through a buckle so as to form the first assembly body;

winding the first assembly body to form 2-3 first assembly bodies with windings;

and (4) carrying out interference press-fitting on the stator yoke and each first assembly body with the windings to form the stator assembly.

The application provides a stator module and a manufacturing method thereof, a stator yoke part and a winding tooth of the stator module are respectively laminated and fixed through respective silicon steel sheets, the fixed winding tooth is in limited connection with a framework, the winding is wound on the periphery of the framework, the winding tooth is fixedly connected with the stator yoke part after being wound with the winding, and the stator yoke part is not limited by a stator yoke part structure and the space between the winding tooth and the winding tooth during winding, so that the improvement of the motor slot filling rate of the stator module is facilitated, and the improvement of the motor performance of the stator module is facilitated.

The utility model provides a stator module, includes stator core, skeleton and winding, stator core includes stator yoke portion and winding tooth, stator yoke portion includes first portion and second portion, the first portion with the second portion is respectively through respective silicon steel sheet range upon range of and fixed, the first portion with the range upon range of direction of second portion is unanimous, the winding tooth with first portion integrated into one piece, the second portion with the first portion joint is connected, the skeleton with the spacing connection of winding tooth, the winding coiling in the periphery of skeleton, the winding tooth along the inner periphery of stator yoke portion arranges, the winding tooth with stator yoke portion fixed connection.

The application provides a stator module, this stator module's stator yoke's first part and second part are laminated and fixed through respective silicon steel sheet respectively, the winding tooth takes shape with first part an organic whole, the winding tooth is spacing with the skeleton and is connected, the winding is around in the periphery of skeleton, the winding tooth is around the second part fixed connection with stator yoke after having made the winding again, do not receive space restriction between stator yoke structure and winding tooth and the winding tooth during the wire winding, be favorable to improving the motor slot fullness rate of using this stator module, be favorable to improving the motor performance of using this stator module.

The motor comprises a stator assembly and a rotor assembly, wherein the rotor assembly is located on the inner periphery of the stator assembly, and the stator assembly is the stator assembly.

An electrically operated valve comprises a motor, a transmission mechanism and a valve core, wherein the motor is in transmission connection with the transmission mechanism, the transmission mechanism is in transmission connection with the valve core, and the motor is the motor.

The motor and the electrically operated valve of the application comprise the stator assembly, the motor groove fullness rate is favorably improved, the motor performance is favorably improved, and therefore the performance of the electrically operated valve is improved.

Drawings

FIG. 1 is a schematic structural view of a first embodiment of an electric machine;

fig. 2 is a perspective view of the stator core shown in fig. 1;

fig. 3 is a schematic top view angle configuration of the stator core shown in fig. 2;

fig. 4 is a schematic top view of the stator core (not including winding teeth) of fig. 2;

FIG. 5 is a perspective view of the winding teeth of FIG. 2;

FIG. 6 is a top view of the winding teeth of FIG. 5;

FIG. 7 is a schematic perspective view of one embodiment of the armature shown in FIG. 1;

FIG. 8 is a schematic structural view of a first embodiment of a mounting groove;

FIG. 9 is a schematic structural view of a second embodiment of the mounting groove;

FIG. 10 is a schematic structural view of a third embodiment of a mounting groove;

fig. 11 is a schematic structural diagram of a second embodiment of the motor (not including the bobbin and the winding);

fig. 12 is a schematic structural diagram of a third embodiment of the motor (not including the bobbin and the winding);

fig. 13 is a schematic structural diagram of a fourth embodiment of the motor (not including the bobbin and the winding);

fig. 14 is a schematic structural diagram of a fifth embodiment of the motor (not including the bobbin and the winding);

fig. 15 is a schematic structural diagram of a sixth embodiment of the motor (not including the bobbin and the winding);

fig. 16 is a schematic structural diagram of a seventh embodiment of the motor (not including the bobbin and the winding);

fig. 17 is a schematic structural diagram of an eighth embodiment of the motor (not including the bobbin and the winding);

fig. 18 is a schematic structural diagram of a ninth embodiment of the motor (not including the bobbin and the winding);

fig. 19 is a schematic structural diagram of a tenth embodiment of the motor (without the bobbin and the winding);

fig. 20 is a schematic structural diagram of an eleventh embodiment of the motor (not including the bobbin and the winding);

fig. 21 is a schematic structural diagram of a twelfth embodiment of the motor (without the bobbin and the winding);

fig. 22 is a schematic structural diagram of a thirteenth embodiment of the motor (not including the bobbin and the winding);

fig. 23 is a partial sectional view of a silicon steel sheet.

Detailed Description

The utility model will be further described with reference to the following figures and specific examples:

referring to fig. 1 to 7 in combination, the motor 100 includes a stator assembly 1 and a rotor assembly 2, the stator assembly 1 is located at the periphery of the rotor assembly 2, the stator assembly 1 includes a stator core 11 and a winding 12, the rotor assembly 2 includes a permanent magnet 21, the permanent magnet 21 includes at least a pair of magnetic poles, the winding 12 of the stator assembly 1 is energized to generate an excitation magnetic field and interact with the magnetic field of the permanent magnet 21 to generate an electromagnetic torque, so that the rotor assembly 2 rotates, and the motor 100 may be a part of an electric product, and provides a driving force for the electric product, such as an electric valve, an electric pump, and the like.

Referring to fig. 2 and 3, the stator core 11 is formed by laminating and riveting multiple layers of silicon steel sheets, and for convenience of description, a laminating direction of the silicon steel sheets is defined as an axial direction of the stator assembly 1, and a direction perpendicular to the laminating direction is defined as a radial direction of the stator assembly 1. The stator core 11 includes a stator yoke portion 111 and stator teeth 110, the stator teeth 110 include winding teeth 112, and the winding teeth 112 are provided on an inner periphery of the stator yoke portion 111. The winding teeth 112 and the stator yoke 111 are separately arranged and fixedly connected, the separate arrangement refers to that the winding teeth 112 and the stator yoke 111 are respectively laminated and riveted through respective silicon steel sheets, and the winding teeth 112 and the stator yoke 111 which are respectively fixedly formed are fixedly connected in a clamping mode and the like. Compared with the stator tooth part and the stator yoke part which are integrally formed, the stator tooth part and the stator yoke part are respectively and independently formed, so that the utilization rate of materials is improved, the processing materials are saved, and the manufacturing cost is reduced.

The stator yoke portion 111 has an inner surface 1111 and an outer surface 1112, the inner surface 1111 is disposed opposite to the outer surface 1112, the winding teeth 112 are arranged along the inner circumference of the stator yoke portion 111, the number of the winding teeth 112 may be 1 or more, the number of the winding teeth 112 in the present embodiment is 3, and 3 winding teeth 112 are uniformly distributed along the outer circumference of the rotor assembly 2 at an included angle of 120 °. Each layer of the silicon steel sheet of the stator yoke portion 111 is an integrally closed structure, that is, each layer of the silicon steel sheet is an integrally formed structure capable of self-closing. The stator yoke 111 includes a first yoke 1113, a second yoke 1114, and a third yoke 1115, the first yoke 1113, the second yoke 1114, and the third yoke 1115 have the same structure and are substantially frame-shaped, the first yoke 1113, the second yoke 1114, and the third yoke 1115 respectively have a first end and a second end, the first yoke 1113, the second yoke 1114, and the third yoke 1115 are connected to each other end to end, that is, the second end of the first yoke 1113 is connected to the first end of the second yoke 1114, the second end of the second yoke 1114 is connected to the first end of the third yoke 1115, and the second end of the third yoke 1115 is connected to the first end of the first yoke 1113. Taking the first yoke part 1113 as an example, the first yoke part 1113 includes a first sub-part 1113a, a second sub-part 1113b, and a third sub-part 1113c, the second sub-part 1113b connects the first sub-part 1113a and the third sub-part 1113c, the first sub-part 1113a and the third sub-part 1113c are disposed substantially in parallel, and the second sub-part 1113b is disposed at an angle of substantially 90 ° with respect to the first sub-part 1113 a/the third sub-part 1113 c. The first end of the first yoke 1113 is located at an end of the first sub-portion 1113a away from the second sub-portion 1113b, and the second end of the first yoke 1113 is located at an end of the third sub-portion 1113c away from the second sub-portion 1113 b. The second yoke 1114 and the third yoke 1115 are identical in structure to the first yoke 1113, and will not be described again.

Referring to fig. 4, the stator yoke 111 has a mounting groove 1116, the mounting groove 1116 is located at an inner side of the stator yoke 111, the mounting groove 1116 is recessed from an inner surface 1111 of the stator yoke 111 toward an outer surface 1112, the mounting groove 1116 is disposed along an axial direction of the stator yoke 111, and referring to fig. 1, the term "inner side" refers to a side of the stator yoke 111 close to the rotor assembly 2. The number of the mounting grooves 1116 is identical to the number of the winding teeth 112, and specifically, the mounting grooves 1116 are respectively formed inside the second sub-portion 1113b of the first yoke 1113, the second sub-portion 1114b of the second yoke 1114, and the second sub-portion 1115b of the third yoke 1115, and the mounting grooves 1116 axially penetrate through the inner surface 1111 of the stator yoke 111, so that the winding teeth 112 can be mounted from any one of the two axial ends of the stator yoke 111, and the assembly is convenient. The phrase "the mounting groove 1116 extends axially through the inner surface 1111 of the stator yoke 111" as used herein means that the groove wall of the mounting groove 1116 communicates with the inner surface 1111 in the radial direction of the stator yoke 111. The mounting grooves 1116 may be dovetail grooves, half dovetail grooves, circular grooves, etc., without limitation thereto.

Referring to fig. 8-10, fig. 8 and 9 illustrate two different ways in which the mounting slots 1116 are dovetail slots. The mounting groove 1116 in fig. 8 has a substantially trapezoidal shape in a radial projection of the stator assembly 1, and the notch has a narrow groove bottom width, and the mounting groove 1116 includes two

groove side walls

1116a,1116b and a groove bottom wall 1116c, and an included angle θ is formed between the

groove side walls

1116a,1116b and the groove bottom wall 1116c, and θ is 25 ° or more and 75 ° or less. The mounting groove 1116 shown in fig. 9 also has an extension 1116d corresponding to the notch size compared with the mounting groove 1116 shown in fig. 8, and the included angle θ between the

groove side walls

1116a,1116b and the groove bottom wall 1116c is also 25 ° or more and 75 ° or less.

Fig. 10 also shows the manner in which the mounting groove 1116 is a circular groove. The circular slot referred to herein does not include only a complete circle, but a portion of a circle, i.e., the circular arc section 1116e, may be considered as a circular slot, and the circular arc section 1116e corresponds to a central angle β of 180 ° or more and 360 ° or less, which facilitates the fixation of the stator yoke to the winding teeth, although the circular slot may include an extension 1116d having the same size as the slot opening as that of fig. 9.

With reference to fig. 5 and 6, the winding teeth 112 are formed by axially stacking and riveting silicon steel sheets, the stacking direction of the silicon steel sheets of the winding teeth 112 is the same as that of the stator yoke 111, the number of the winding teeth 112 is 3, and the 3 winding teeth 112 are respectively located on the inner sides of the first yoke 1113, the second yoke 1114 and the third yoke 1115 and fixedly connected with the corresponding yokes. The 3 winding teeth 112 are identical in structure, each winding tooth 112 comprises a first neck portion 1121, a first shoe portion 1122 and a protruding portion 1123, the first neck portion 1121, the first shoe portion 1122 and the protruding portion 1123 are integrally formed, the first neck portion 1121 provides support for installation of the winding 12, the first shoe portion 1122 is used for collecting a magnetic field, the protruding portion 1123 is used for installation and limiting with the stator yoke portion 111, and the winding tooth 112 is connected with the corresponding stator yoke portion 111 through the protruding portion 1123. The shape of the protrusion 1123 matches the shape of the mounting groove 1116, the protrusion 1123 protrudes from one end of the first shoe 1122, the protrusion 1123 is located in the corresponding mounting groove 1116 and is in limit fit with the mounting groove 1116, and in order to ensure that the winding teeth 112 and the stator yoke 111 are more reliably fixed, the protrusion 1123 and the stator yoke 111 may be in interference fit or over fit. The first shoe portion 1122 is connected to the other end of the first neck portion 1121, the first shoe portion 1122 includes an arc-shaped surface 1122a, the arc-shaped surface 1122a is recessed toward the first neck portion 1121, and the arc-shaped surface 1122a is disposed opposite to the outer peripheral surface of the rotor assembly 2. The first neck 1121 of the winding tooth 112 is disposed in parallel with the first sub-portion 1113 a/third sub-portion 1113c of the corresponding stator yoke.

Referring to fig. 1 to 4, the stator yoke 111 further includes connection portions 1117, the number of the connection portions 1117 is equal to the number of the winding teeth 112, and the connection portions are respectively referred to as a first connection portion 1117a, a second connection portion 1117b, and a third connection portion 1117c, and the first connection portion 1117a connects the first yoke 1113 and the third yoke 1115, the second connection portion 1117b connects the first yoke 1113 and the second yoke 1114, and the third connection portion 1117c connects the second yoke 1114 and the third yoke 1115. Each connecting portion 1117 has at least one mounting hole 1117d, and the motor 100 can be fixed through the mounting hole 1117dIs fixed in the shell of the electric product. In order to improve the accuracy of the motor 100, the stator teeth 110 further include yoke teeth 113, the yoke teeth 113 are located inside the connecting portions 1117 and are integrally formed with the connecting portions 1117, and each connecting portion 1117 is integrally formed with 1 or more yoke teeth 113, and each connecting portion 1117 is integrally formed with one yoke tooth 113 in this embodiment. In the present embodiment, the yoke teeth 113 are formed integrally with the stator yoke 111, and the winding teeth 112 are provided separately from the stator yoke 111 and fixedly connected thereto. The yoke teeth 113 include the second shoe portions 1131, the second shoe portions 1131 also include arc-shaped surfaces 1131a, the arc-shaped surfaces 1131a are recessed toward the outer surface 1112 side of the stator yoke 111, the arc length of the arc-shaped surfaces 1131a of the second shoe portions 1131 is identical to the arc length of the arc-shaped surfaces 1122a of the first shoe portions 1122, the arc-shaped surfaces 1122a of the first shoe portions 1122 and the arc-shaped surfaces 1131a of the second shoe portions 1131 are concentrically arranged, that is, both take the axial center of the rotor assembly 2 as a center O, the distance from the arc-shaped surfaces 1122a of the first shoe portions 1122 to the center O is equal to the distance from the arc-shaped surfaces 1131a of the second shoe portions 1131 to the center O, that is, when viewed from the stator core along the axial projection (as viewed in fig. 1 and 3), the arc-shaped surfaces 1122a of the first shoe portions 1122 and the arc-shaped surfaces 1131a of the second shoe portions 1131 are located on the same circle with the axial center of the rotor assembly 2 as the center O. The first and

second shoes

1122 and 1131 are disposed at intervals and uniformly distributed along the outer circumferential surface of the rotor assembly 2, the first and

second shoes

1122 and 1131 together form an accommodating chamber 10 for accommodating the rotor assembly 2, and a distance d from the first or second shoe to the outer circumferential surface of the rotor assembly 2₁The motor has the advantages of equal air gap, uniform air gap, less harmonic wave of air gap magnetic field, noise reduction and improvement of the performance of the electric device. Gap d between first and

second shoes

1122, 1131₂The thickness of the magnetic pole is 0.4-2.5 mm, and the magnetic flux leakage is easily caused when the magnetic pole is too large or too small, so that the performance of the motor is influenced.

Referring to fig. 1, the stator assembly 1 further includes a frame 13, the number of the frame 13 and the number of the windings 12 are the same as the number of the winding teeth 112, and the frame 13 corresponds to the windings 12 and the winding teeth 112 one to one. The bobbin 13 is connected to the winding teeth 112 in a limiting manner, the winding 12 is wound around the outer circumference of the bobbin 13, specifically, the bobbin 13 is at least partially located at the outer circumference of the first neck portion 1121, the bobbin 13 is limited between the protruding portion 1123 and the first shoe portion 1122, and the bobbin 13 is usually made of an insulating material such as plastic, so as to isolate the stator core 11 from the winding 12 and provide support for winding the winding 12. A portion of backbone 13 is also positioned around the outer perimeter of first boot 1122 to make the best use of space and to increase motor slot fill. The bobbin 13 of the present embodiment is formed by integrally injection-molding the winding teeth 112 as an insert. As another embodiment of the bobbin, as shown in fig. 7, the bobbin 13 includes a first bobbin 131 and a second bobbin 132, the first bobbin 131 and the second bobbin 132 are respectively formed by injection molding, the winding teeth 112 are disposed between the first bobbin 131 and the second bobbin 132, the first bobbin 131 and the second bobbin 132 are fastened by means of a snap fit or the like, and the first bobbin 131 and the second bobbin 132 together form an accommodating cavity for accommodating the winding teeth 112. The bobbin 13 is formed with a winding groove 133, and the winding 12 is wound in the winding groove 133. The winding teeth 112 are connected with the stator yoke portion 111 in a clamping mode after the windings 12 are wound, the limitation of the structure of the stator yoke portion and the space between the winding teeth and the winding teeth is avoided during winding, the improvement of the full rate of the motor slot is facilitated, the improvement of the performance of the motor is facilitated, in addition, the winding process is simple, the automatic production is facilitated, and the reduction of the manufacturing cost of the stator assembly is facilitated.

Fig. 1 also shows the riveting holes 114 of the stator core 11 for riveting, the number and the positions of the riveting holes 114 can be referred to in the drawings, and can also be adjusted by themselves, and the riveting holes 114 in an actual product may not be observed by naked eyes. Fig. 23 is a partial cross-sectional view of a single-layer silicon steel sheet riveting hole, where the single-layer silicon steel sheet riveting hole 114 includes a protrusion 1141 and a recess 1142, the diameter K1 of the protrusion 1141 and the diameter K2 of the recess 1142 are both greater than or equal to 0.6mm and less than or equal to 1.5mm, the nominal sizes of K1 and K2 are the same, but the tolerances are different, and the protrusion of one layer of silicon steel sheet and the recess of the other layer of silicon steel sheet are in interference fit, so as to achieve fixed connection of each silicon steel sheet. The depth of the concave part is recorded as H2, the height of the convex part is recorded as H3, H2 is more than or equal to H3, 0.5H1 is more than or equal to H2 is more than or equal to 0.85H1, wherein H1 is the thickness of the silicon steel sheet, and the optimal value of H2 is as follows: h2 ═ 0.75H 1.

In this embodiment, the number of stator teeth, i.e., the sum of yoke teeth and winding teeth, is 6, the number of corresponding slots of the motor is also 6, and when the motor is a three-phase motor, i.e., the number of windings is 3, the rotor assembly 2 corresponds to the number of pole pairs P₀The following relationship is preferably satisfied with the motor slot number Z:

Z＝2×

P

₀2 or 2 × P₀±1

Number of pole pairs P of the screened rotor assembly 2₀Can be 2 or 4, and figure 1 shows the pole pair number P₀Example 2.

The embodiment also provides a manufacturing method of the stator assembly, wherein the stator assembly is the stator assembly shown in fig. 1, and the manufacturing method comprises the following processing steps:

the stator yoke and the yoke teeth comprise a plurality of layers of first silicon steel sheets, the winding teeth comprise a plurality of layers of second silicon steel sheets, and the first silicon steel sheets and the second silicon steel sheets are formed by stamping and processing the plate;

laminating, riveting or welding and fixing the first silicon steel sheets to form an integrated piece of the stator yoke and the yoke teeth; laminating and riveting or welding and fixing the second silicon steel sheet to form 3 winding teeth;

taking each winding tooth as an injection molding insert, forming a first assembly body with a framework at the periphery of the winding tooth through injection molding, or enabling the framework to comprise a first framework and a second framework, forming the first framework and the second framework through injection molding, placing the winding tooth between the first framework and the second framework, and buckling the first framework and the second framework through buckles, so as to form the first assembly body;

winding the first assembly, thereby forming 3 first assemblies with windings;

and carrying out interference press mounting on the integrated piece of the stator yoke and the yoke teeth and each first assembly body with the windings to form the stator assembly.

Referring to fig. 11, fig. 11 is a second embodiment of the motor 100. Unlike the previous embodiment, each of the connecting

portions

1117a,1117b,1117c of the present embodiment is integrally formed with two yoke teeth 113, and the yoke teeth 113 include a second neck portion 1132 and a second shoe portion 1131, and the connecting portion 1117 is connected to the second shoe portion 1131 through the second neck portion 1132, and the second neck portion 1132 has a short lengthAlong the length of the first neck portion 1121, the first and

second shoes

1122 and 1131 together form an accommodating chamber 10 for accommodating the rotor assembly 2, and the second, second and

first shoes

1131, 1122 are cyclically distributed for 3 times in one unit along the outer circumference of the rotor assembly 2. The total number of yoke teeth 113 is 6, the number of winding teeth 112 is 3, the number of stator teeth is 9, the number of corresponding motor slots Z is 9, and the number of pole pairs P of the rotor assembly 2 is 9₀Can be 4 or 5, and the figure shows the pole pair number P₀Example 4. In the embodiment, the connecting portion 1117 is not provided with a mounting hole, and the motor may be fixed to the housing of the electric product by referring to other conventional manners, and of course, may also be implemented by referring to the previous embodiment with a mounting hole.

Referring to fig. 12, fig. 12 is a third embodiment of the motor. Unlike the second embodiment, in the present embodiment, each of the connecting

portions

1117a,1117b, and 1117c is integrally formed with three yoke teeth 113, the number of stator teeth is 12, the number of corresponding motor slots Z is 12, and the number of pole pairs P of the rotor assembly 2 is 12₀Can be 4 or 5 or 7 or 8, and the figure shows the pole pair number P₀Example 5.

Referring to fig. 13, fig. 13 shows a fourth embodiment of the motor, which is different from the third embodiment in that the winding teeth 112 and the winding teeth 112 are distributed at an interval of 60 °, the first connecting portion 1117a and the second connecting portion 1117b are respectively formed integrally with one yoke tooth 113, the third connecting portion 1117c is formed integrally with 7 yoke teeth 113, and the number of stator teeth is 12 in total as in the third embodiment. In this embodiment, the winding teeth 112 are intensively arranged on one side, which is beneficial to the miniaturization of the stator assembly 1 and the size reduction of the motor.

Referring to fig. 14, fig. 14 shows a fifth embodiment of the motor, which is different from the third embodiment in that each of the connecting

portions

1117a,1117b,1117c is integrally formed with four yoke teeth 113, the number of stator teeth is 15, the number of corresponding slots Z is 15, and the number of pole pairs P of the rotor assembly 2 is 15₀Can be 5 or 7 or 8, and the figure shows the pole pair number P₀Example 5.

Referring to fig. 15, fig. 15 shows a sixth embodiment of the motor in which the splicing position of the stator core 11 is changed compared to the first embodiment. The stator yoke portion 111 includes a first portion, i.e., the

second portion

1113b, 1114b, 1115b of the stator yoke portion 111, and a second portion, i.e., the remaining stator yoke portion, corresponding to the

first portion

1113a, 1114a, 1115a, the

third portion

1113c, 1114c, 1115c, and the connecting

portion

1117a,1117b,1117c of the stator yoke portion 111, the first portion and the second portion are laminated and riveted by respective silicon steel sheets, the laminating direction of the first portion and the second portion is the same, and the winding teeth 112 are integrally formed with the first portion. The first portion integrally formed with the winding tooth 112 is fixedly connected with the second portion by means of clamping, referring to the first embodiment, for example, the first yoke 1113 is provided with a protrusion 115 similar to the protrusion 1123 of the winding tooth 112 in the first embodiment at the end of the first sub-portion 1113a and the end of the third sub-portion 1113c close to the second sub-portion 1113b, and mounting grooves 1116 are provided at both ends of the second sub-portion 1113b, and are fixed by the protrusion 115 and the mounting grooves 1116. Of course, it is also possible to provide mounting grooves on the first sub-portion and the third sub-portion and provide the second sub-portion with protrusions at both ends, or to provide the first sub-portion 1113a and the third sub-portion 1113c with protrusions at one end and mounting grooves at the other end, respectively, of the second sub-portion 1113 b. The bobbin and the winding are not shown in the drawing of the embodiment, and as in the first embodiment, the bobbin is in limit connection with the winding teeth, the winding is wound on the periphery of the bobbin, and the winding teeth are arranged along the inner surface of the stator yoke. The stator yoke part and the winding teeth are arranged at an included angle of 90 degrees, the winding of the winding is not affected, the motor slot fullness rate is improved as same as that of the first embodiment, and the motor performance is improved.

The mounting groove 1116 may be a dovetail groove, a circular groove, etc., and three different groove configurations are shown with reference to fig. 15-17, where the mounting groove 1116 is a circular groove in fig. 15, the mounting groove 1116 is a dovetail groove in fig. 16 and 17, and fig. 16 and 17 differ in the location of the protrusion 115, where the protrusion 115 of fig. 16 is located in the middle of the first sub-portion 1113 a/third sub-portion 1113c, and where the protrusion 115 of fig. 17 is located on the side of the first sub-portion 1113 a/third sub-portion 1113c adjacent to the winding teeth 112.

Referring to fig. 18, fig. 18 is a ninth embodiment of the motor, in this embodiment, the number of the winding teeth 112 is 2, the corresponding winding is two phases, the winding teeth 112 and the winding teeth 112 are arranged at an included angle of 90 °, the stator yoke includes a first yoke 1113 and a second yoke 1114, the connection portion includes a first connection portion 1117a and a second connection portion 1117b, the first connection portion 1117a is not integrally formed with the yoke teeth, the second connection portion 1117b is integrally formed with the 2 yoke teeth 113, in this embodiment, the number of the stator teeth, i.e., the sum of the yoke teeth and the winding teeth, is 4, the corresponding number of the motor slots Z is 4, and when the motor is a two-phase motor, i.e., the number of the winding is 2, the rotor assembly 2 corresponds to the number of the pole pairs P₀The following relationship is preferably satisfied with the motor slot number Z:

Z＝2×P ₀2 x n, where n is an integer, Z is the number of slots, and Z is an integer multiple of 4.

Number of pole pairs P of the screened rotor assembly 2₀Is 2, of course, the number of pole pairs P of the rotor assembly₀It may be 1, 3, 5, 7, 8, etc.

Referring to fig. 19, fig. 19 is a tenth embodiment of the motor, which is different from the embodiment shown in fig. 18 in that the first connecting portion 1117a is integrally formed with 1 yoke tooth 113, the second connecting portion 1117b is integrally formed with 5 yoke teeth 113, and the number P of pole pairs of the rotor assembly 2 is set₀1, of course, the number of pole pairs P of the rotor assembly₀Or 7 or 8, etc.

Referring to fig. 20, fig. 20 shows an eleventh embodiment of the motor, which is different from the embodiment shown in fig. 18 in that the first connecting portions 1117a are integrally formed with 2 yoke teeth 113, the second connecting portions 1117b are integrally formed with 8 yoke teeth 113, and the number P of pole pairs of the rotor assembly 2 is₀Is 3, of course, the number of pole pairs P of the rotor assembly₀Or 1 or 5 or 6 or 7 or 9, etc.

Referring to fig. 21, fig. 21 shows a twelfth embodiment of the motor, which is different from the embodiment shown in fig. 19 in that the winding teeth 112 and the winding teeth 112 are arranged at an included angle of 135 ° in the present embodiment, and the first connection portions 1117a and 2The yoke teeth 113 are integrally formed, the second connecting portion 1117b is integrally formed with the 4 yoke teeth 113, and the number P of pole pairs of the rotor assembly 2₀Is 3, of course, the number of pole pairs P of the rotor assembly₀Or 2, 5, 6, etc.

Referring to fig. 22, fig. 22 shows a thirteenth embodiment of the motor, which is different from the embodiment shown in fig. 20 in that the winding teeth 112 and the winding teeth 112 are arranged at an angle of 150 °, the first connecting portion 1117a is integrally formed with 4 yoke teeth 113, the second connecting portion 1117b is integrally formed with 6 yoke teeth 113, and the number P of pole pairs of the rotor assembly 2 is₀Is 3, of course, the number of pole pairs P of the rotor assembly₀Or 6 or 9, etc.

The application also provides an electrically operated valve, which comprises a motor, a transmission mechanism and a valve core, wherein the motor is in transmission connection with the transmission mechanism, the transmission mechanism is in transmission connection with the valve core, and the motor is the motor in any one of the above embodiments.

It should be noted that: although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention may be modified or substituted by equivalents, and all technical solutions and modifications which do not depart from the spirit and scope of the present invention should be covered by the claims of the present invention.

Claims

1. The utility model provides a stator module, includes stator core, skeleton and winding, stator core includes stator yoke portion and stator tooth, stator tooth includes the winding tooth, its characterized in that: the stator yoke part and the winding teeth are stacked and fixed through respective silicon steel sheets, the stacking direction of the stator yoke part and the stacking direction of the winding teeth are consistent, the framework is in limit connection with the winding teeth, the winding is wound on the periphery of the framework, the winding teeth are arranged along the inner periphery of the stator yoke part, and the winding teeth are fixedly connected with the stator yoke part.

2. The stator assembly of claim 1, wherein: the number of the winding teeth is 2-3, the number of the frameworks and the windings is the same as that of the windings, and the frameworks correspond to the windings and the winding teeth one to one; the stator yoke portion has the mounting groove, the mounting groove certainly the inner surface of stator yoke portion is sunken to surface place direction, the mounting groove is followed the axial setting of stator yoke portion, the winding tooth includes bellying and first neck, the bellying certainly an end protrusion of first neck sets up, the shape of bellying with the shape cooperation of mounting groove, the bellying is located the mounting groove that corresponds and with stator yoke portion interference or transition fit.

3. The stator assembly of claim 2, wherein: the winding teeth comprise first boots, the first boots are connected with the other ends of the first necks, the first boots comprise arc-shaped surfaces, and the arc-shaped surfaces are sunken towards the sides where the first necks are located; the stator tooth portion further comprises a yoke tooth, the yoke tooth is located on the inner side of the stator yoke, the yoke tooth and the stator yoke are integrally formed, the yoke tooth comprises a second shoe portion, the second shoe portion comprises an arc-shaped surface, the arc-shaped surface is concave towards the outer surface of the stator yoke, and the first shoe portion and the second shoe portion jointly form an accommodating cavity for accommodating a rotor assembly.

4. The stator assembly of claim 3, wherein: the mounting groove is a dovetail groove, a half dovetail groove or a circular groove; when the mounting groove is a dovetail groove or a half dovetail groove, an included angle between the side wall of the mounting groove and the bottom wall of the groove is more than or equal to 25 degrees and less than or equal to 75 degrees; when the mounting groove is a circular groove, the mounting groove comprises an arc section, and a central angle beta corresponding to the arc section is more than or equal to 180 degrees and less than or equal to 360 degrees; the gap between the first boot part and the second boot part is 0.4-2.5 mm, and the arc length of the arc-shaped surface of the first boot part is consistent with that of the arc-shaped surface of the second boot part.

5. The stator assembly of claim 3, wherein: the framework part is positioned on the periphery of the first neck part, the framework part is positioned on the periphery of the first boot part, the framework is provided with a winding groove, and the winding is positioned in the winding groove; the skeleton with correspond winding tooth injection moulding, perhaps, the skeleton includes first skeleton and second skeleton, the winding tooth is located between first skeleton and the second skeleton, first skeleton and second skeleton joint form the skeleton.

6. The stator assembly of claim 2, wherein: the number of the winding teeth is 3, and the winding teeth are uniformly distributed at an included angle of 120 degrees or 60 degrees; the stator yoke comprises a first yoke, a second yoke and a third yoke, the first yoke, the second yoke and the third yoke are identical in structure, the first yoke, the second yoke and the third yoke respectively have a first end and a second end, the second end of the first yoke is connected with the first end of the second yoke, the second end of the second yoke is connected with the first end of the third yoke, the second end of the third yoke is connected with the first end of the first yoke, and the winding teeth are respectively located on the inner sides of the first yoke, the second yoke and the third yoke and fixedly connected with the corresponding yoke.

7. The stator assembly of claim 6, wherein: the first yoke part comprises a first sub-part, a second sub-part and a third sub-part, the second sub-part is connected with the first sub-part and the third sub-part, the first sub-part and the third sub-part are arranged in parallel, the second sub-part and the first sub-part/the third sub-part are arranged at an included angle of 90 degrees, the mounting groove is positioned in the second sub-part, and a first neck part of the winding tooth is arranged in parallel with the first sub-part/the third sub-part; the stator yoke portion includes a connecting portion, the stator tooth portion further includes a yoke tooth, the yoke tooth is located on an inner side of the stator yoke portion, the yoke tooth is located on an inner side of the connecting portion, the connecting portion is integrally formed with the yoke tooth, the connecting portion includes a first connecting portion, a second connecting portion, and a third connecting portion, the first connecting portion connects the first yoke portion and the third yoke portion, the second connecting portion connects the first yoke portion and the second yoke portion, and the third connecting portion connects the second yoke portion and the third yoke portion.

8. The stator assembly of claim 2, wherein: the number of the winding teeth is 2, and the winding teeth are distributed at an included angle of 45 degrees or 90 degrees or an included angle of 135 degrees or 150 degrees; the stator yoke comprises a first yoke and a second yoke, the first yoke and the second yoke are identical in structure, the first yoke and the second yoke respectively have a first end and a second end, the second end of the first yoke is connected with the first end of the second yoke, the second end of the second yoke is connected with the first end of the first yoke, and the winding teeth are respectively positioned on the inner sides of the first yoke and the second yoke and fixedly connected with the corresponding yoke.

9. The stator assembly of any of claims 1-4, further comprising: the silicon steel sheet comprises riveting holes, each riveting hole comprises a convex part and a concave part, the diameters of the convex parts and the concave parts are respectively greater than or equal to 0.6mm and less than or equal to 1.5mm, the convex parts of the silicon steel sheet are in interference fit with the concave parts of the other silicon steel sheet, the depth of the concave parts is recorded as H2, the height of the convex parts is recorded as H3, and the H2 and the H3 meet the following relations: h2 is more than or equal to H3, H2 is more than or equal to 0.5H1 and less than or equal to 0.85H1, wherein H1 is the thickness of the silicon steel sheet.

10. The utility model provides a stator module, includes stator core, skeleton and winding, stator core includes stator yoke portion and winding tooth, its characterized in that: the stator yoke part comprises a first part and a second part, the first part and the second part are stacked and fixed through respective silicon steel sheets respectively, the stacking direction of the first part and the stacking direction of the second part are consistent, the winding teeth and the first part are integrally formed, the second part is connected with the first part in a clamping mode, the framework is connected with the winding teeth in a limiting mode, the winding is wound on the periphery of the framework, the winding teeth are arranged along the inner periphery of the stator yoke part, and the winding teeth are fixedly connected with the stator yoke part.

11. An electric machine comprising a stator assembly and a rotor assembly located at an inner periphery of the stator assembly, the stator assembly being as claimed in any one of claims 1 to 10.

12. An electrically operated valve, comprising a motor, a transmission mechanism and a valve core, wherein the motor is in transmission connection with the transmission mechanism, the transmission mechanism is in transmission connection with the valve core, and the motor is the motor of claim 11.