CN117013732A

CN117013732A - Motor, compressor, refrigeration equipment and vehicle

Info

Publication number: CN117013732A
Application number: CN202210457959.2A
Authority: CN
Inventors: 赵东亮; 孙国伟
Original assignee: Guangdong Welling Auto Parts Co Ltd; Anhui Welling Auto Parts Co Ltd
Current assignee: Guangdong Welling Auto Parts Co Ltd; Anhui Welling Auto Parts Co Ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2023-11-07
Also published as: WO2023207406A1

Abstract

The application provides a motor, a compressor, refrigeration equipment and a vehicle. Wherein, the motor includes: a stator core; the first insulation framework is arranged at one end of the stator core and comprises a first side wall, a second side wall and a wire passing groove positioned between the first side wall and the second side wall; the winding is wound on the bypass wire slot and the stator core; wherein, along the axial direction of stator core, the height of first lateral wall is less than or equal to 2 times of the height of second lateral wall. The heights of the first side wall and the second side wall in the first insulating framework are limited, and the height of the first side wall is set to be less than or equal to 2 times of the height of the second side wall, so that the motor design is reasonable, the defect that the winding cannot be effectively fixed due to the fact that the height of the first insulating framework is too low is avoided, the height of the first insulating framework can be reduced to the greatest extent, the motor volume is effectively reduced, and the motor is miniaturized.

Description

Motor, compressor, refrigeration equipment and vehicle

Technical Field

The application relates to the technical field of motors, in particular to a motor, a compressor, refrigeration equipment and a vehicle.

Background

In the related art, the insulating framework of the motor is too high, which is not beneficial to miniaturization of the motor; the end part of the insulating end plate is too low in height, copper wires cannot be effectively fixed, the problem that a tooling bumps the copper wires occurs in the production process, and the reliability risk of the motor is caused.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art.

To this end, a first aspect of the invention provides an electric machine.

A second aspect of the present invention provides a compressor.

A third aspect of the present invention provides a refrigeration appliance.

A fourth aspect of the invention provides a vehicle.

The first aspect of the present invention provides an electric machine comprising: a stator core; the first insulation framework is arranged at one end of the stator core and comprises a first side wall, a second side wall and a wire passing groove positioned between the first side wall and the second side wall; the winding is wound on the bypass wire slot and the stator core; wherein, along the axial direction of stator core, the height of first lateral wall is less than or equal to 2 times of the height of second lateral wall.

The motor provided by the invention comprises a stator core, a first insulating framework and windings. Along the axis of stator core, first insulating skeleton sets up the axial one end of arranging stator core, and first insulating skeleton is used for fixed stator core and winding. The first insulating framework comprises a first side wall, a second side wall and a wire passing groove. The first side wall is located the outside wall that the centre of a circle side of stator core was kept away from to first insulating skeleton, and the second side wall is located the inside wall that the centre of a circle side of stator core was close to first insulating skeleton, crosses the wire casing and is located between first side wall and the second side wall. The winding is wound on the wire passing groove and the stator core. Wherein, it is along the axial of stator core to inject, and the height of first lateral wall is less than or equal to 2 times of the height of second lateral wall, and the height of first lateral wall refers to along the axial of stator core, and the distance between the end of first lateral wall to the diapire of wire casing, and the coverage of second lateral wall refers to along the axis of stator core, the distance between the end of second lateral wall to the diapire of wire casing. Through setting the height of first lateral wall to be less than or equal to 2 times of the height of second lateral wall, and then guaranteed the fixed of winding in the single wire winding groove on the one hand, through the high and then the high of messenger's first insulating skeleton of limiting the first lateral wall under the prerequisite of guaranteeing the definition to the winding, can reach the purpose that reduces the whole height of insulating skeleton, and then reduced the ascending holistic height of motor shaft, and then can be favorable to the miniaturized design of motor.

In addition, the motor in the technical scheme provided by the invention can also have the following additional technical characteristics:

in any of the above technical solutions, further, the stator core includes a plurality of first stator teeth and first stator slots located between two adjacent first stator teeth; the method comprises the steps of carrying out cross section on a stator core along the direction perpendicular to the axial direction of the stator core, wherein in the obtained cross section, the extension lines of the bottom wall of a first stator groove respectively intersect with the extension lines of two side walls of the first stator groove at two points, and the distance between the two points is a first distance; the extension lines of the groove shoulders positioned at the two sides of the notch of the first stator groove are respectively intersected with the extension lines of the two side walls of the first stator groove at two points, and the distance between the two points is a second distance; along the axial direction of the stator core, the range of the height of the second side wall is as follows: less than or equal to 0.6 times the sum of the first distance and the second distance, and greater than or equal to 0.4 times the sum of the first distance and the second distance.

In the technical scheme, a stator core is provided with a plurality of circumferentially arranged first stator teeth, two adjacent first stator teeth are surrounded to form a first stator slot, and a winding is wound on the stator teeth through the first stator slot.

Further, the stator core is sectioned along the direction perpendicular to the axis of the stator core, and in the section, in the section shape of the first stator groove, the extension lines of the bottom wall and the extension lines of the side walls of the two sides of the first stator groove are respectively intersected, and the connecting line between the two intersection points is a first distance; the first stator groove comprises a notch, the notch is opposite to the bottom wall, groove shoulders of the first stator groove are arranged on two sides of the notch, extension lines of the groove shoulders on two sides are intersected with extension lines of side walls on two sides respectively, and the distance between the two intersection points is a second distance.

Further, the range of the height of the second side wall is limited to be less than or equal to 0.6 times of the sum of the first distance and the second distance and more than or equal to 0.4 times of the sum of the first distance and the second distance. The height of the second side wall in the first insulating framework is limited through the size parameters of the first stator slot, so that reasonable limitation on the height of the side wall of the wire passing slot is realized, effective fixation of windings is further met, the height of the first insulating framework can be reasonably set, and the miniaturization requirement of a motor can be met to the greatest extent. Further, after the height of the second side wall is reasonably limited, the height of the first side wall is limited by the height of the second side wall, so that the height of the whole first insulating framework is limited, the rationalization of motor design is realized, the limiting effect on windings is met, the height of the first insulating framework can be reduced to the greatest extent, the motor volume is effectively reduced, and the motor is miniaturized.

In any of the above aspects, further, in an axial direction of the stator core, a height of the first side wall is greater than or equal to 1.5 times a height of the second side wall.

In the technical scheme, the lower limit value of the height of the first side wall is further limited, so that the height of the first side wall can meet the fixing effect of the single winding. Specifically, the height of the first sidewall is greater than or equal to 1.5 times the height of the second sidewall. Through limiting the height relation of the first side wall and the second side wall of the first insulating framework, the height of the whole first insulating framework is limited, and further rationalization of motor design is achieved, namely limiting effect on windings is met, and the miniaturization requirement of the motor can be guaranteed.

In any of the above solutions, further, the motor further includes: the second insulating framework is arranged at the other end of the stator core, and the height of the inner side wall, close to the center side of the stator core, of the second insulating framework is equal to the height of the second side wall along the axial direction of the stator core.

In this technical scheme, the motor still includes the second insulating skeleton, and the second insulating skeleton sets up with first insulating skeleton is relative, sets up respectively in stator core's axial opposite ends. The second insulation framework comprises a wire passing groove, and an inner side wall and an outer side wall which are positioned at two sides of the wire passing groove, wherein the inner side wall is a side wall of one side of the second insulation framework, which is close to the center of the stator core; the outer side wall is a side wall of one side of the second insulating framework, which is close to the outer peripheral wall of the stator core. The height of the inner side wall of the second insulating framework refers to the distance from the end face of the inner side wall, far away from the stator core, to the bottom wall of the wire passing groove along the axial direction of the stator core.

Further, the height of the inner side wall of the second insulating framework is equal to the height of the second side wall of the first insulating framework, the heights of the insulating frameworks at the two axial ends of the stator core are set to be in the optimal height range, motor design rationalization is achieved, the defect that copper wires cannot be effectively fixed due to too low insulating framework height is overcome, the height of the insulating end plate can be reduced to the greatest extent, the motor volume is effectively reduced, and motor miniaturization is facilitated.

In any of the above technical solutions, the stator core includes a plurality of punching sheets stacked axially along the stator core; the plurality of punched sheets comprises: the plurality of first punching sheets are overlapped to form a main body section of the stator core, and the first punching sheets comprise first stator grooves; the second punching sheets are overlapped at two ends of the main body section along the axial direction of the stator core; the structure of the first punching sheet is different from that of the second punching sheet.

In this embodiment, a plurality of punched sheets are stacked in series in the axial direction to form the stator core. The stator core comprises at least two punching sheets, the middle part of the stator core is a main body section along the axial direction of the stator core, the stator core is formed by continuously stacking a plurality of first punching sheets, and the first punching sheets comprise a plurality of first stator teeth distributed along the circumferential direction; the two end parts of the stator core are formed by superposing a plurality of second punching sheets, namely the second punching sheets are superposed at the two ends of the main body section. Wherein the first punched sheet has a different structure from the second punched sheet. Through adopting the first towards piece and the second towards piece of two kinds of structures, guarantee the wholeness ability of motor through first towards piece, through setting up the second towards piece at the tip for the second towards piece and first insulating skeleton and second insulating skeleton install the cooperation, and then further reduce the axial size of motor in stator core's axial, be favorable to the miniaturized design of motor.

In any of the above technical solutions, the second punched sheet includes a second stator slot, the first punched sheet and the second punched sheet are sectioned along a direction perpendicular to an axial direction of the stator core, and a sectional area of the second stator slot is larger than a sectional area of the first stator slot.

In this technical scheme, the second towards the piece including a plurality of second stator teeth that distribute along circumference, two adjacent second stator teeth enclose to establish and form the second stator slot, and in the axial direction along perpendicular to stator core, the cross-sectional area in second stator slot is greater than the cross-sectional area in first stator slot. Through setting the area of the second stator groove at the second towards the piece to be greater than the area of the first stator groove of first towards the piece for the second towards the piece fold and locate on the first towards the piece after, the first towards the piece that lies in the circumference side part protrusion in the second stator groove of second towards the piece, and then the step that forms, the installation of first insulating skeleton and second insulating skeleton is, and the bottom of first insulating skeleton is sunk into the second stator inslot, and on butt and the first towards the piece, the same second insulating skeleton is installed the time, the bottom also is sunk into the second stator inslot, on butt and the first towards the piece, and then makes the axial size of motor obtain the reduction. Furthermore, the first insulating framework and the second insulating framework are partially immersed into the second stator groove, so that the winding circumference of the winding is shortened, the length of copper wires of the winding is further saved, and materials are saved.

In any of the above technical solutions, the bottom wall of the wire passing groove is provided with a plurality of limit grooves; the plurality of limit grooves are uniformly distributed along the direction from the first side wall to the second side wall.

In this technical scheme, the diapire of crossing the wire casing in the first insulating skeleton has a plurality of spacing grooves that carry out spacingly to the winding to spacing groove even distribution is in the direction of first lateral wall to second lateral wall, through the diapire that crosses the wire casing in the first insulating skeleton set up spacing groove, can effectively improve winding displacement distribution, realizes that the motor groove filling rate promotes further, further realizes the miniaturization of motor.

In any of the above solutions, the first insulating skeleton further includes: the wire guiding groove is arranged on the first side wall and is communicated with the wire passing groove, and the wire guiding groove is used for guiding out a wire of the motor.

In this technical scheme, still have the wire casing of seting up at first side wall in the first insulating skeleton, be linked together wire casing and wire casing, and then make the wire of motor draw forth through the wire casing, through seting up the wire casing on first insulating skeleton, make things convenient for the drawing forth of wire, avoided the damage condition of wire, and make things convenient for the assembly of motor, promoted the stability of motor operation.

In any of the above technical solutions, further, the stator core includes a plurality of core blocks, and the plurality of core blocks are sequentially connected along a circumferential direction of the stator core; the core block includes: the yoke portion is connected with the stator teeth connected with the yoke portion, and a plurality of yoke portions corresponding to the plurality of iron core blocks are connected to form a stator iron core.

In this technical scheme, set up stator core to including a plurality of iron core pieces that link to each other in proper order along circumference, and every iron core piece includes yoke portion and the stator tooth that is connected with yoke portion, and two adjacent iron core pieces can be connected through yoke portion simultaneously to make a plurality of iron core pieces enclose and establish stator core. Through setting up stator core into the piecemeal structure, effectively promote motor groove area utilization ratio, promote motor power density, further realize the motor miniaturization.

In any of the above technical solutions, the stator core includes a stator hole, and a ratio of a diameter of the stator hole to an outer diameter of the stator core is less than or equal to 0.65 and greater than or equal to 0.60.

In this technical scheme, stator core still includes by the tip of a plurality of stator teeth encloses the stator hole of establishing and forms, has prescribe a limit to the diameter of stator hole and stator core's excircle diameter and has satisfied the following relation: the ratio is less than or equal to 0.65 and greater than or equal to 0.60. The ratio of the diameter of the stator hole of the stator core to the diameter of the outer circle of the stator core is limited, so that the copper consumption and iron consumption distribution of the motor can be effectively improved, the motor loss is reduced, and the motor volume is further reduced.

In any of the above-described aspects, the stator core is sectioned along a direction perpendicular to an axis of the stator core, and a section line of a bottom wall of the first stator slot includes: straight lines and arcs.

In the technical scheme, the stator core is subjected to cross section along the direction perpendicular to the axis of the stator core, namely, the bottom wall surface of the first stator slot comprises an arc section and a straight line section in the cross section shape of the first punching sheet. Through setting the cross-section line of the diapire with first stator groove into straight line and pitch arc, and then can promote the volume of stator groove, and then make the winding twine when stator core, have sufficient accommodation to guarantee the orderly winding of winding, promote the groove full rate of motor, with the reliability of guaranteeing the motor operation.

In any of the above technical solutions, the motor further includes a second insulation framework disposed at the other end of the stator core; the winding turns of the winding wound on the first insulating framework are the same as the winding turns of the winding wound on the second insulating framework.

In this technical scheme, the motor still includes the second insulating skeleton, and second insulating skeleton and first insulating skeleton set up at stator core's axial both ends relatively. The number of winding turns of the motor winding around the first insulating framework is the same as the number of winding turns of the motor winding around the second insulating framework, so that the normal operation of the motor is further ensured.

According to a second aspect of the present application, there is provided a compressor comprising the motor provided in any one of the first aspects, and therefore, the compressor provided in any one of the first aspects has all the advantages of the motor provided in any one of the first aspects, which are not listed herein.

The embodiment of the third aspect of the application also provides a refrigeration device comprising the motor or the compressor of any one of the above embodiments.

The refrigeration equipment provided by the application comprises the motor or the compressor in any embodiment, so that the refrigeration equipment has all technical effects of the motor or the compressor, and the description is omitted herein.

The fourth aspect of the application also provides a vehicle comprising the motor or the compressor of any of the above embodiments.

The motor or the compressor of any one of the embodiments is included in the vehicle provided by the application, so that all technical effects of the motor or the compressor are achieved, and the description is omitted herein.

Additional aspects and advantages of the application will be set forth in part in the description which follows, or may be learned by practice of the application.

Drawings

The foregoing and/or additional aspects and advantages of the application will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view showing a structure of a motor portion according to an embodiment of the present invention;

FIG. 2 shows a top view of the motor portion structure of the embodiment of FIG. 1;

FIG. 3 shows a cross-sectional view along A-A of the embodiment of FIG. 2;

fig. 4 shows a schematic structural view of the stator core of the embodiment shown in fig. 1;

fig. 5 shows a structural plan view of the stator core of the embodiment shown in fig. 4;

FIG. 6 shows a schematic view of the structure of the first punch of the embodiment of FIG. 4;

FIG. 7 is a schematic view showing the structure of a first insulating skeleton of the embodiment shown in FIG. 1;

FIG. 8 illustrates a structural top view of the first insulating skeleton of the embodiment of FIG. 7;

FIG. 9 shows a cross-sectional view of the embodiment of FIG. 8 taken along the B-B direction;

FIG. 10 shows a schematic structural view of a second insulating skeleton of the embodiment of FIG. 1;

FIG. 11 shows a structural top view of the second insulating skeleton shown in FIG. 10;

fig. 12 shows a cross-sectional view along the direction C-C of the embodiment of fig. 11.

The correspondence between the reference numerals and the component names in fig. 1 and 12 is:

1 motor, 10 stator core, 100 first lamination, 1002 first stator tooth, 1004 first stator slot, 1006 stator hole, 200 second lamination, 2002 second stator tooth, 2004 second stator slot, 20 first insulating frame, 202 first sidewall, 204 second sidewall, 206 wire pass slot, 30 second insulating frame, 302 inner sidewall, 304 outer sidewall, 306 bottom plate, 40 windings.

Detailed Description

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

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

A motor and compressor, a refrigeration apparatus, and a vehicle provided according to some embodiments of the present application are described below with reference to fig. 1 to 12.

Example 1:

according to an embodiment of the present application, as shown in fig. 1 to 12, there is provided a motor 1 including: the stator core 10, the first insulating bobbin 20, and the windings 40.

Specifically, the first insulating frame 20 is disposed at one end of the stator core 10, and the first insulating frame 20 includes a first sidewall 202, a second sidewall 204, and a wire passing groove 206 between the first sidewall 202 and the second sidewall 204; winding 40 is wound around winding slot 206 and stator core 10; wherein, along the axial direction of the stator core 10, the height of the first side wall 202 is less than or equal to 2 times the height of the second side wall 204.

The motor 1 provided by the invention comprises a stator core 10, a first insulating framework 20 and windings 40. Along the axis of the stator core 10, a first insulating frame 20 is disposed at one axial end of the stator core 10, and the first insulating frame 20 is used to fix the stator core 10 and the windings 40. The first insulating skeleton 10 includes a first sidewall 202, a second sidewall 204, and a wire chase 206. The first side wall 202 is located on the outer side wall of the first insulating frame 20 away from the center side of the stator core 10, the second side wall 204 is located on the inner side wall of the first insulating frame 20 near the center side of the stator core 10, and the wire passing groove 206 is located between the first side wall 202 and the second side wall 204. The winding 40 is wound around the winding slot 206 and the stator core 10.

Further, in the axial direction of the stator core 10, the height of the first side wall 202 is less than or equal to 2 times the height of the second side wall 204, the height of the first side wall 202 refers to the distance between the end of the first side wall 202 and the bottom wall of the wire passing slot 206 in the axial direction of the stator core 10, and the coverage of the second side wall 204 refers to the distance between the end of the second side wall 204 and the bottom wall of the wire passing slot 206 in the axial direction of the stator core 10. By setting the height of the first side wall 202 to be less than or equal to 2 times of the height of the second side wall 204, on the one hand, the fixing of the winding 40 in the single-winding slot is further ensured, on the other hand, the purpose of reducing the overall height of the insulating framework can be achieved on the premise of ensuring the definition of the winding 40 by limiting the height of the first side wall 202 and further enabling the height of the first insulating framework 20 to be smaller than the overall height of the motor 1 in the axial direction, and further the miniaturization design of the motor 1 can be facilitated.

The height of the first side wall 202 and the second side wall 204 in the first insulating framework 20 is limited, and the height of the first side wall 202 is set to be less than or equal to 2 times that of the second side wall 204, so that the design of the motor 1 can be rationalized, the defect that the winding 40 cannot be effectively fixed due to the fact that the height of the first insulating framework 20 is too low is avoided, the height of the first insulating framework 20 can be furthest reduced, the size of the motor 1 is effectively reduced, and the motor 1 is miniaturized.

Example 2:

further, as shown in fig. 6, the stator core 10 includes a plurality of first stator teeth 1002 and first stator slots 1004 between adjacent two of the first stator teeth 1002, according to an embodiment of the present invention, on the basis of the above-described embodiments.

In this embodiment, the stator core 10 has a plurality of first stator teeth 1002 arranged circumferentially, and two adjacent first stator teeth 1002 are surrounded to form a first stator slot 1004, and the winding 40 is wound on the stator teeth through the first stator slot 1004.

Further, as shown in fig. 7, 8 and 9, the stator core 10 is sectioned in a direction perpendicular to the axial direction of the stator core 10, and in the resultant section, the bottom wall extension lines of the first stator slot 1004 intersect with the extension lines of both side walls of the first stator slot 1004 at two points, respectively, with a first distance therebetween; the extension lines of the groove shoulders positioned at the two sides of the notch of the first stator groove 1004 respectively intersect with the extension lines of the two side walls of the first stator groove 1004 at two points, and the distance between the two points is a second distance; the height of the second sidewall 204 along the axial direction of the stator core 10 is within the range of: less than or equal to 0.6 times the sum of the first distance and the second distance, and greater than or equal to 0.4 times the sum of the first distance and the second distance.

Specifically, the stator core 10 is sectioned in a direction perpendicular to the axis of the stator core 10, and in the section obtained, in the section shape of the first stator slot 1004, the extension lines of the bottom wall and the extension lines of the side walls on both sides of the first stator slot 1004 intersect respectively, and the connecting line between the two intersection points is a first distance; the first stator groove 1004 includes a notch, the notch is opposite to the bottom wall, two sides of the notch are groove shoulders of the first stator groove 1004, extension lines of the groove shoulders on two sides are intersected with extension lines of side walls on two sides respectively, and a distance between the two intersection points is a second distance.

Further, the range of the height of the second sidewall 204 is defined to be less than or equal to 0.6 times the sum of the first distance and the second distance, and greater than or equal to 0.4 times the sum of the first distance and the second distance. The height of the second side wall 204 in the first insulating framework 20 is limited by the size parameters of the first stator groove 1004, so that reasonable limitation of the height of the side wall of the wire passing groove 206 is realized, and the effective fixation of the winding 40 is further met, and the height of the first insulating framework 20 is reasonably arranged, so that the miniaturization requirement of the motor 1 is met to the greatest extent. Further, after the height of the second side wall 204 is reasonably limited, the height of the first side wall 202 is limited by utilizing the height of the second side wall 204, so that the height of the whole first insulating framework 20 is limited, the design rationalization of the motor 1 is realized, the limiting effect on the winding 40 is met, the height of the first insulating framework 20 can be reduced to the greatest extent, the volume of the motor 1 is effectively reduced, and the miniaturization of the motor 1 is facilitated.

Specifically, the number of the first stator teeth 1002 is generally a multiple of 3, and may be 6, 9, 12 or 18, etc., which may be selected according to the specific requirements of the motor 1 in practical applications, and are not exemplified herein.

Specifically, the outer circumferential wall of the stator core 10 is substantially cylindrical, facilitating the installation of the stator core 10 on the one hand, and the production and processing of the stator core 10 on the other hand.

Further, the height of the first side wall 202 is greater than or equal to 1.5 times the height of the second side wall 204 in the axial direction of the stator core 10.

Specifically, the lower limit value of the height of the first sidewall 202 is further defined, so as to ensure that the height of the first sidewall 202 can satisfy the fixing function of the single winding 40. Specifically, the height of the first sidewall 202 is greater than or equal to 1.5 times the height of the second sidewall 204. By limiting the height relationship between the first side wall 202 and the second side wall 204 of the first insulating framework 20, the height of the whole first insulating framework 20 is limited, so that the design rationalization of the motor 1 is realized, the limiting effect on the winding 40 is met, and the miniaturization requirement of the motor 1 can be ensured.

Specifically, as shown in fig. 6, the stator core 10 is sectioned in a direction perpendicular to the axis of the stator core 10, and in the resulting section, the bottom wall extension lines of the first stator slot 1004 intersect with the extension lines of both side walls of the first stator slot 1004 at two points, respectively, with a distance between the two points being a first distance H1; the extension lines of the groove shoulders at the two sides of the notch of the first stator groove 1004 respectively intersect with the extension lines of the two side walls of the first stator groove 1004 at two points, and the distance between the two points is a second distance H2; and along the axial direction of the stator core 10, the height of the first side wall 202 is H3, the distance from the end surface of the first side wall 202 away from the stator core 10 to the bottom of the wire passing groove 206, and the height of the second side wall 204 is H4, the axial distance from the end surface of the second side wall 204 away from the stator core 10 to the bottom of the wire passing groove 206. Wherein, H1, H2, H3, H4 satisfy the following relation: 0.40× (H1+H2) < H3 < 0.60× (H1+H2), 1.5×H2 < H4 < 2.0×H2.

The invention can rationalize the design of the motor 1 by limiting the height of the first side wall 202 and the height of the second side wall 204 of the first insulating framework 20, so that the defect that copper wires cannot be effectively fixed due to the too low height of the first insulating framework 20 can be avoided, the height of the first insulating framework 20 can be reduced to the maximum extent, the volume of the motor 1 is effectively reduced, and the miniaturization of the motor 1 is facilitated.

Example 3:

according to an embodiment of the present invention, as shown in fig. 1 to 3, on the basis of any of the above embodiments, the motor 1 further includes: and a second insulating frame 30.

Specifically, the second insulating frame 30 is disposed at the other end of the stator core 10, and the height of the inner sidewall 302 of the second insulating frame 30 near the center side of the stator core 10 is equal to the height of the second sidewall 204 along the axial direction of the stator core 10.

In this embodiment, the motor 1 further includes second insulating bobbins 30 disposed opposite to the first insulating bobbins 20, respectively at opposite ends in the axial direction of the stator core 10. The second insulating frame 30 comprises a wire passing groove 206, and an inner side wall 302 and an outer side wall 304 which are positioned at two sides of the wire passing groove 206, wherein the inner side wall 302 is a side wall of one side of the second insulating frame 30 close to the center of the stator core 10; the outer side wall 304 is a side wall of the second insulating frame 30 on a side close to the outer peripheral wall of the stator core 10. The height of the inner side wall 302 of the second insulating frame 30 refers to the distance from the end surface of the inner side wall 302 away from the stator core 10 to the bottom wall of the wire passing groove 206 in the axial direction of the stator core 10.

Further, the height of the inner sidewall 302 of the second insulating frame 30 is equal to the height of the second sidewall 204 of the first insulating frame 20, and the heights of the insulating frames at the two axial ends of the stator core 10 are set to be within the optimal height range, so that the design rationalization of the motor 1 is realized, the defect that copper wires cannot be effectively fixed due to the too low height of the insulating frames can be avoided, the height of the insulating end plate can be reduced to the greatest extent, the volume of the motor 1 is effectively reduced, and the miniaturization of the motor 1 is facilitated.

Specifically, as shown in fig. 10, 11 and 12, the second insulating frame 30 includes an outer sidewall 304, a bottom plate 306, and an inner sidewall 302. Wherein, the height H5 of the inner sidewall 302 of the second insulating frame 30 is an axial dimension from the end surface of the inner sidewall 302 far from the stator core 10 to the bottom plate 306, and the following relationship is satisfied between the height H5 of the inner sidewall 302 and an axial distance H3 from the end surface of the first sidewall 202 far from the stator core 10 in the first insulating frame 20 to the bottom of the slot 206: h5 In the present invention, the height of the inner sidewall 302 in the second insulating frame 30 is defined to be the same as the height of the second sidewall 204 of the first insulating frame 20, so that the material can be saved to the greatest extent, and the miniaturization of the motor 1 is facilitated.

Example 4

According to one embodiment of the present invention, as shown in fig. 4, 5 and 6, including the features defined in any of the above embodiments, and further, the stator core 10 includes a plurality of laminations stacked axially along the stator core 10.

Specifically, the plurality of punched sheets includes: a plurality of first and second punches 100 and 200, wherein the structure of the first punch 100 is different from the structure of the second punch 200.

Further, a plurality of first laminations 100 are stacked out of the main body section of the stator core 10, the first laminations 100 including first stator slots 1004; the second punched sheet 200 is stacked at both ends of the main body section in the axial direction of the stator core 10.

In this embodiment, as shown in fig. 4, the stator core 10 is constituted by a plurality of punched pieces that are laminated successively in the axial direction. Wherein the stator core 10 comprises at least two kinds of punched sheets. In the axial direction of the stator core 10, the middle part of the stator core 10 is a main body section, and is formed by continuously stacking a plurality of first punching sheets 100, wherein the first punching sheets 100 comprise a plurality of first stator teeth 1002 distributed along the circumferential direction; the two end portions of the stator core 10 are formed by stacking a plurality of second punched pieces 200 together, that is, the second punched pieces 200 are stacked at the two ends of the main body section. Wherein the structure of the first sheet 100 is different from the structure of the second sheet 200. Through adopting the first towards piece 100 and the second towards piece 200 of two kinds of structures, guarantee the wholeness ability of motor 1 through first towards piece 100, through setting up second towards piece 200 at the tip for second towards piece 200 carries out the installation cooperation with first insulating skeleton 20 and second insulating skeleton 30, and then further reduces the axial size of motor 1 in the axial of stator core 10, is favorable to motor 1 miniaturized design.

Further, the plurality of first punching sheets 100 form a main body section of the stator core 10, and the number of the second punching sheets 200 located at two ends of the main body section may be one or more, specifically, the number may be set according to the specific setting parameters of the motor 1, which is not described herein.

Further, the second punch 200 includes a second stator slot 2004.

Specifically, as shown in fig. 5, the first and second laminations 100 and 200 are sectioned in a direction perpendicular to the axis of the stator core 10, and the sectional area of the second stator slot 2004 is larger than the sectional area of the first stator slot 1004.

Specifically, the second punching sheet 200 includes a plurality of second stator teeth 2002 distributed in the circumferential direction, and two adjacent second stator teeth 2002 are surrounded to form a second stator groove 2004, and the cross-sectional area of the second stator groove 2004 is larger than the cross-sectional area of the first stator groove 1004 in the direction perpendicular to the axial direction of the stator core 10. By setting the area of the second stator groove 2004 of the second sheet 200 to be larger than the area of the first stator groove 1004 of the first sheet 100, after the second sheet 200 is stacked on the first sheet 100, the peripheral portion of the first sheet 100 located on the first stator groove 1004 protrudes from the groove wall of the second stator groove 2004 of the second sheet 200, and further a step is formed, when the first insulating frame 20 and the second insulating frame 30 are mounted, the bottom of the first insulating frame 20 is sunk into the second stator groove 2004 to abut against the first sheet 100, and when the second insulating frame 30 is mounted, the bottom is sunk into the second stator groove 2004 to abut against the first sheet 100, and further the axial dimension of the motor 1 is reduced. Further, the first insulating frame 20 and the second insulating frame 30 are partially sunk into the second stator groove 2004, so that the winding circumference of the winding 40 is shortened, the length of copper wires of the winding 40 is further saved, and materials are saved.

Further, the second stator tooth 2002 includes a tooth root and a tooth shoe connected to one end of the tooth root, the other end of the tooth root being connected to a yoke of the second shim 200. The tooth shoes include first and second tooth shoes having different lengths in the circumferential direction of the second punched sheet 200, specifically, the first tooth shoe has a length smaller than that of the second tooth shoe. The corresponding teeth shoes of the first stator teeth 1002 of the first sheet 100 include a third tooth shoe and a fourth tooth shoe, the third tooth shoe and the fourth tooth shoe being equal in length, and the second tooth shoe being equal in length to the third tooth shoe and the fourth tooth shoe. That is, the length of the notch of the second stator groove 2004 is longer than that of the notch of the first stator groove 1004, and the first tooth shoes and the second tooth shoes on both sides of the notch of the second stator groove 2004 are provided in an asymmetric structure, so that the reluctance torque of the motor 1 can be utilized to further increase the output torque.

Example 5

According to an embodiment of the present invention, including the features defined in any of the above embodiments, and further, the bottom wall of the wire passing groove 206 is provided with a limit groove (not shown in the figure).

Specifically, the number of the limit grooves is a plurality of limit grooves; the plurality of limiting grooves are uniformly distributed along the direction from the first side wall 202 to the second side wall 204.

In this embodiment, the bottom wall of the wire passing groove 206 in the first insulating frame 20 has a plurality of limiting grooves for limiting the winding 40, and the limiting grooves are uniformly distributed in the directions from the first side wall 202 to the second side wall 204, and by arranging the limiting grooves on the bottom wall of the wire passing groove 206 in the first insulating frame 20, the wire arrangement distribution of the winding 40 can be effectively improved, the full rate of the winding 1 can be further improved, and the miniaturization of the motor 1 can be further realized.

It will be appreciated that the second insulating frame 30 corresponds to the first insulating frame 20, and therefore, the spacing grooves are provided on the wire passing groove 206 of the first insulating frame 20, and then the spacing grooves are also provided on the second insulating frame 30, wherein the spacing grooves are uniformly distributed on the bottom plate 306 along the inner sidewall 302 to the outer sidewall 304.

Further, the first insulating frame 20 further includes: and a lead groove is arranged on the first side wall 202, is communicated with the wire passing groove 206 and is used for leading out wires of the motor 1.

Specifically, the first insulating frame 20 further has a wire slot formed in the first side wall 202, and the wire slot is communicated with the wire passing slot 206, so that the wires of the motor 1 are led out through the wire slot, and the wire slot is formed in the first insulating frame 20, so that the wires are led out conveniently.

It will be appreciated that the lead-out wire opening of the motor 1 is close to the lead-out wire slot, and therefore the first insulating skeleton 20 is close to the lead-out wire side of the motor 1, and the opposite second insulating skeleton 30 is distant from the lead-out wire side of the motor 1.

Further, the number of winding turns of the winding 40 around the first insulating frame 20 is the same as the number of winding turns of the winding 40 around the second insulating frame 30.

Specifically, by making the number of winding turns of the winding 40 wound around the first insulating bobbin 20 in the motor 1 the same as the number of winding turns wound around the second insulating bobbin 30, the normal operation of the motor 1 is further ensured.

Example 6

According to an embodiment of the present invention, including the features defined in any of the above embodiments, and further, as shown in fig. 1 to 4, the stator core 10 includes a plurality of core blocks.

Specifically, the plurality of core blocks are sequentially connected in the circumferential direction of the stator core 10; the core block includes: the yoke portion and the stator teeth connected to the yoke portion are connected to a plurality of yoke portions corresponding to the plurality of core blocks to form the stator core 10.

In this embodiment, the stator core 10 is provided to include a plurality of core blocks connected in sequence in the circumferential direction, and each core block includes a yoke portion and stator teeth connected with the yoke portion, while two adjacent core blocks may be connected by the yoke portion, so that the plurality of core blocks enclose the stator core 10. Through setting up stator core 10 as the piecemeal structure, effectively promote motor 1 groove area utilization ratio, promote motor 1 power density, further realize motor 1 miniaturization.

Specifically, the stator core 10 is provided to include a plurality of core blocks connected in sequence in the circumferential direction, and each core block includes a yoke portion, at least one stator tooth, and two connecting portions, with the two connecting portions being located at both circumferential ends of the yoke portion, respectively.

Specifically, one of the two connecting parts is a groove structure, the other of the two connecting parts is a protruding structure matched with the groove structure, and the connection of the two adjacent iron core blocks is realized through the groove structure and the protruding structure. Thereby facilitating the production and improving the generation efficiency.

Example 7

According to one embodiment of the present invention, as shown in fig. 6, including the features defined in any of the embodiments described above, and further, the stator core 10 includes a stator bore 1006.

Specifically, the ratio of the diameter of the stator hole 1006 to the outer diameter of the stator core 10 satisfies 0.65 or less and 0.60 or more.

In this embodiment, the stator core 10 further includes a stator hole 1006 defined by a plurality of stator teeth, the stator hole 1006 for mounting a rotor of the motor 1. Further, the ratio of the diameter of the stator hole 1006 to the diameter of the outer circumference of the stator core 10 is defined, and the following relationship is defined between the diameter of the stator hole 1006 and the diameter of the outer circumference of the stator core 10: the ratio is less than or equal to 0.65 and greater than or equal to 0.60.

Specifically, along the radial direction of the stator core 10, the diameter of the stator hole 1006 is Φ1, the outer diameter of the punched sheet is Φ2, and the following relation is satisfied: phi 1/phi 2 is more than or equal to 0.60 and less than or equal to 0.65. By limiting the ratio of the diameter of the stator hole 1006 of the stator core 10 to the diameter of the outer circle of the stator core 10, the copper consumption and iron consumption distribution of the motor 1 can be effectively improved, the loss of the motor 1 can be reduced, and the volume of the motor 1 can be further reduced.

Further, the stator core 10 is sectioned in a direction perpendicular to an axial direction of the stator core 10, and a section line of a bottom wall of the first stator slot 1004 includes: straight lines and arcs.

Specifically, the stator core 10 is sectioned in a direction perpendicular to the axis of the stator core 10, that is, in the sectional shape of the first punch 100, the bottom wall surface of the first stator slot 1004 includes an arc segment and a straight line segment. Through setting the cross-section line of the bottom wall of the first stator slot 1004 to be straight line and arc line, the volume of the stator slot can be further improved, and then enough accommodating space is provided when the winding 40 is wound on the stator core 10, so that the orderly winding of the winding 40 is ensured, the slot filling rate of the motor 1 is improved, and the running reliability of the motor 1 is ensured.

Example 8

According to an embodiment of the present invention, as shown in fig. 1 to 12, the present invention proposes a motor 1, which can achieve miniaturization of the motor 1 and improve reliability of the motor 1 by reasonably matching the stator punching size and the axial height size of the insulating end plate.

Specifically, as shown in fig. 1 and 2, the motor 1 provided by the present invention includes a stator core 10, a first insulating frame 20, a second insulating frame 30, and a winding 40, wherein the stator core 10 is formed by continuously laminating a plurality of punched sheets in the axial direction.

Further, the stator core 10 includes at least two kinds of punched sheets; the plurality of punched sheets comprises: a plurality of first and second punches 100 and 200, wherein the structure of the first punch 100 is different from the structure of the second punch 200. The plurality of first punched sheets 100 are stacked to form a main body section of the stator core 10, the second punched sheets 200 are stacked to form two ends of the main body section along the axial direction of the stator core 10.

Further, the first insulating frame 20 and the second insulating frame 30 are respectively placed at both ends of the stator core 10 in the axial direction, the windings 40 are wound on the insulating frame and the stator core 10, and the first insulating frame 20 is located at the lead-out wire side of the motor 1.

Further, the inner side of the first punching sheet 100 has a plurality of first stator teeth 1002 spaced apart, and a first stator slot 1004 is defined between two adjacent first stator teeth 1002.

Further, the stator core 10 is sectioned in a direction perpendicular to the axis of the stator core 10, and in the section obtained, in the section shape of the first stator slot 1004, the bottom wall extension line of the first stator slot 1004 intersects with the extension lines of both side walls of the first stator slot 1004 at two points, respectively, and the distance between the two points is the first distance H1; the extension lines of the groove shoulders at the two sides of the notch of the first stator groove 1004 respectively intersect with the extension lines of the two side walls of the first stator groove 1004 at two points, and the distance between the two points is a second distance H2; and the first side wall 202 has a height H3 from the end surface of the first side wall 202 away from the stator core 10 to the bottom of the wire passing groove 206 along the axial axis direction of the stator core 10, and the second side wall 204 has a height H4 from the end surface of the second side wall 204 away from the stator core 10 to the bottom of the wire passing groove 206. Wherein, H1, H2, H3, H4 satisfy the following relation: 0.40× (H1+H2) < H3 < 0.60× (H1+H2), 1.5×H2 < H4 < 2.0×H2.

Further, the groove bottom portion of the first stator groove 1004 of the first punching sheet 100 is formed by combining a straight line and an arc, so that parameters such as a groove filling rate of the motor 1 are improved, and energy efficiency of the motor 1 is improved.

Further, along the radial direction of the stator core 10, the diameter of the stator hole 1006 is Φ1, the outer diameter of the punched sheet is Φ2, and the following relation is satisfied: the phi 1/phi 2 is more than or equal to 0.60 and less than or equal to 0.65, the copper consumption and iron consumption distribution of the motor 1 can be effectively improved, the loss of the motor 1 is reduced, and the volume of the motor 1 is further reduced.

Further, the stator core 10 adopts a block structure. That is, the stator core 10 includes a plurality of core blocks, and since the stator core 10 adopts a block structure, the slot area utilization rate of the motor 1 can be effectively improved, the power density of the motor 1 is improved, and the miniaturization of the motor 1 is further realized.

Further, the second insulating skeleton 30 includes an outer sidewall 304, a bottom plate 306, and an inner sidewall 302. The axial dimension H5 from the end surface of the second insulating frame 30, away from the stator core 10, to the bottom plate 306 is the inner side wall 302, and the following relationship is satisfied between the height H5 of the inner side wall 302 and the axial distance H3 from the end surface of the first side wall 202, away from the stator core 10, to the bottom of the slot 206 in the first insulating frame 20: h5 =h3.

Further, the number of turns of winding 40 of motor 1 around first insulating frame 20 is the same as the number of turns of winding around second insulating frame 30, and by making the heights of inner side walls 302 of first insulating frame 20 and second insulating frame 30 the same, material can be saved to the greatest extent, which is beneficial to miniaturization of motor 1.

Further, the wire passing groove 206 in the first insulating framework 20 and the bottom plate 306 in the second insulating framework 30 are provided with limiting grooves for limiting the windings 40; by providing the limit grooves for the wire passing grooves 206 in the first insulating framework 20 and the bottom plate 306 in the second insulating framework 30, the wire arrangement distribution of the windings 40 can be effectively improved, the full rate of the grooves of the motor 1 can be further improved, and the motor 1 can be further miniaturized.

Further, the number of first stator teeth 1002 in the first die 100 is 12.

The motor 1 provided by the invention can rationalize the design of the motor 1 by limiting the height of the first side wall 202 and the height of the second side wall 204 on the first insulating framework 20, so that the defect that copper wires cannot be effectively fixed due to the too low insulating framework height can be avoided, the insulating framework height can be reduced to the greatest extent, the volume of the motor 1 is effectively reduced, and the motor 1 is beneficial to miniaturization. The invention aims to provide a permanent magnet synchronous motor 1, which can realize miniaturization of the motor 1 and improve the reliability of the motor 1 by reasonably matching the size of a stator punching sheet and the axial height size of an insulating end plate.

Example 9

A second aspect of the application provides a compressor having an electric motor 1 as provided in any one of the embodiments of the first aspect.

Specifically, the compressor provided by the application comprises the motor 1 of any embodiment, and the motor 1 provided by the application comprises a stator core 10, a first insulating framework 20 and windings 40.

Further, along the axis of the stator core 10, the first insulating frame 20 is located parallel to one end of the stator core 10 in the axial direction, and the first insulating frame 20 is used for fixing the stator core 10 and the winding 40. And the first insulating frame 20 is connected to the stator core 10.

Further, the first insulating skeleton 20 is composed of a first side wall 202, a second side wall 204, and a wire passing groove 206. The first side wall 202 is located at an outer side wall 304 of the first insulating frame 20 on a side away from the center of the stator core 10, the second side wall 204 is located at an inner side wall 302 of the first insulating frame 20 on a side close to the center of the stator core 10, and the wire passing groove 206 is located between the first side wall 202 and the second side wall 204. The winding 40 is wound around the winding slot 206 and the stator core 10.

Further, it is defined that the height of the first side wall 202 is less than or equal to 2 times the height of the second side wall 204 in the axial direction of the stator core 10, the height of the first side wall 202 refers to the distance between the end of the first side wall 202 and the bottom wall of the wire passing slot 206 in the axial direction of the stator core 10, and the coverage of the second side wall 204 refers to the distance between the end of the second side wall 204 and the bottom wall of the wire passing slot 206 in the axial direction of the stator core 10. Namely, the height of the first side wall 202 is set to be less than or equal to 2 times of the height of the second side wall 204, so that on one hand, the fixing of the winding 40 in the single-winding slot is ensured, on the other hand, the purpose of reducing the whole height of the insulating framework can be achieved on the premise of ensuring the definition of the winding 40 by limiting the height of the first side wall 202, the whole height of the motor 1 in the axial direction is reduced, and the miniaturization design of the motor 1 is facilitated.

Further, the stator core 10 has a plurality of circumferentially arranged first stator teeth 1002, two adjacent first stator teeth 1002 are surrounded by a first stator slot 1004 formed in a fan-shaped structure, and the winding 40 is wound on the stator teeth through the first stator slot 1004.

Further, the stator core 10 is sectioned in a direction perpendicular to the axial direction of the stator core 10, and in the section obtained, in the section shape of the first stator slot 1004, the extension lines of the bottom wall and the extension lines of the side walls on both sides of the first stator slot 1004 intersect respectively, and the connecting line between the two intersection points is a first distance; the first stator groove 1004 includes a notch, the notch is opposite to the bottom wall, two sides of the notch are groove shoulders of the first stator groove 1004, extension lines of the groove shoulders on two sides are intersected with extension lines of side walls on two sides respectively, and a distance between the two intersection points is a second distance.

Taking the inner diameter of the stator core 10 as an axis, wherein the distance between two points where the extension line of the bottom wall part of the first stator slot 1004 in the stator punching sheet at the axial middle position of the stator core 10 intersects with the extension lines of the first stator teeth 1002 at the two sides is a first distance; the distance between the points where the groove shoulder part extension lines of the two sides of the first stator groove 1004 and the extension line of the two sides of the first stator tooth 1002 intersect is the second distance.

Further, the range of the height of the second side wall 204 is set to be 0.6 times or less of the sum of the first distance and the second distance and 0.4 times or more of the sum of the first distance and the second distance along the axial direction of the stator core 10. The height of the second side wall 204 in the first insulating framework 20 is limited by the size parameters of the first stator groove 1004, so that reasonable limitation of the height of the side wall of the wire passing groove 206 is realized, and the effective fixation of the winding 40 is further met, and the height of the first insulating framework 20 is reasonably arranged, so that the miniaturization requirement of the motor 1 is met to the greatest extent.

Further, after the height of the second side wall 204 is reasonably limited, the height of the first side wall 202 is limited by utilizing the height of the second side wall 204, so that the height of the whole first insulating framework 20 is limited, the design rationalization of the motor 1 is realized, the limiting effect on the winding 40 is met, the height of the first insulating framework 20 can be reduced to the greatest extent, the volume of the motor 1 is effectively reduced, and the miniaturization of the motor 1 is facilitated.

The compressor provided by the application comprises the motor 1 in any embodiment, so that the internal space of the compressor can be reasonably utilized, and the applicability of the compressor is further improved.

Example 10

The embodiment of the third aspect of the application also proposes a refrigeration appliance comprising a motor 1 or a compressor of any of the embodiments described above.

The refrigeration equipment provided by the application comprises the motor 1 or the compressor in any embodiment, so that the refrigeration equipment has all technical effects of the motor 1 or the compressor and is not described in detail herein.

Example 11

The fourth aspect of the embodiment of the application also proposes a vehicle comprising the motor 1 or the compressor of any of the embodiments described above.

The vehicle provided by the application has all technical effects of the motor 1 or the compressor of any embodiment because the motor or the compressor is included, and the description is omitted herein.

In particular, vehicles include electric vehicles, and the motor or compressor provided by the present application can be better adapted to the spatial design of the vehicle.

In the description of the present application, the term "plurality" means two or more, unless explicitly defined otherwise, the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application; the terms "coupled," "mounted," "secured," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean 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 present invention. In this specification, schematic representations of the above terms 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 is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric machine, comprising:

a stator core;

the first insulation framework is arranged at one end of the stator core and comprises a first side wall, a second side wall and a wire passing groove positioned between the first side wall and the second side wall;

The winding is wound on the wire passing groove and the stator core;

wherein, along the axial direction of stator core, the height of first lateral wall is less than or equal to 2 times of the height of second lateral wall.

2. An electric machine according to claim 1, characterized in that,

the stator core comprises a plurality of first stator teeth and first stator grooves positioned between two adjacent first stator teeth;

the method comprises the steps of carrying out cross section on the stator core along the direction perpendicular to the axial direction of the stator core, wherein in the obtained cross section, the extending lines of the bottom wall of the first stator groove respectively intersect with the extending lines of the two side walls of the first stator groove at two points, and the distance between the two points is a first distance;

extension lines of groove shoulders positioned at two sides of a notch of the first stator groove respectively intersect with extension lines of two side walls of the first stator groove at two points, and the distance between the two points is a second distance;

along the axial direction of the stator core, the range of the height of the second side wall is as follows: less than or equal to 0.6 times the sum of the first distance and the second distance, and greater than or equal to 0.4 times the sum of the first distance and the second distance.

3. An electric machine according to claim 1, characterized in that,

the height of the first side wall is greater than or equal to 1.5 times the height of the second side wall along the axial direction of the stator core.

4. The electric machine of claim 2, further comprising:

the second insulating framework is arranged at the other end of the stator core, along the axial direction of the stator core, and the height of the second insulating framework, which is close to the inner side wall of the center side of the stator core, is equal to the height of the second side wall.

5. An electric machine according to claim 2, characterized in that,

the stator core comprises a plurality of punching sheets which are axially overlapped along the stator core;

the plurality of punched sheets includes:

a plurality of first punched sheets stacked out of the main body section of the stator core, the first punched sheets including the first stator slot;

the second punching sheets are overlapped at two ends of the main body section along the axial direction of the stator core;

the structure of the first punching sheet is different from that of the second punching sheet.

6. The motor of claim 5, wherein the motor is configured to control the motor,

the second punching sheet comprises a second stator groove, the first punching sheet and the second punching sheet are subjected to cross section along the direction perpendicular to the axial direction of the stator core, and the cross section area of the second stator groove is larger than that of the first stator groove.

7. An electric machine according to any one of claims 1 to 6, characterized in that,

the bottom wall of the wire passing groove is provided with a plurality of limit grooves;

the limiting grooves are uniformly distributed along the direction from the first side wall to the second side wall.

8. The electric machine of any one of claims 1 to 6, wherein the first insulating skeleton further comprises:

the lead groove is arranged on the first side wall and is communicated with the wire passing groove, and the lead groove is used for leading out a wire of the motor.

9. An electric machine according to any one of claims 1 to 6, characterized in that,

the stator core comprises a plurality of core blocks, and the plurality of core blocks are sequentially connected along the circumferential direction of the stator core;

the core block includes: the stator comprises a yoke part and stator teeth connected with the yoke part, wherein a plurality of corresponding yoke parts of the iron core blocks are connected to form the stator iron core.

10. An electric machine according to any one of claims 4 to 6, characterized in that,

the stator core is sectioned along a direction perpendicular to an axial direction of the stator core, and a section line of a bottom wall of the first stator slot comprises: straight lines and arcs.

11. A motor according to any one of claims 1 to 3, further comprising:

the second insulating framework is arranged at the other end of the stator core;

the winding turns of the winding wound on the first insulating framework are the same as the winding turns of the winding wound on the second insulating framework.

12. A compressor, comprising:

an electrical machine as claimed in any one of claims 1 to 11.

13. A refrigeration appliance, comprising:

the motor of any one of claims 1 to 11; or (b)

The compressor of claim 12.

14. A vehicle, characterized by comprising:

the motor of any one of claims 1 to 11; or (b)

The compressor of claim 12.