CN213585304U

CN213585304U - Motor stator and motor

Info

Publication number: CN213585304U
Application number: CN202022587060.1U
Authority: CN
Inventors: 郑艳双
Original assignee: Tianjin Santroll Electric Automobile Technology Co Ltd
Current assignee: Borgwarner Powertrain Tianjin Co ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-06-29
Anticipated expiration: 2030-11-10

Abstract

The utility model provides a motor stator and a motor, wherein a stator winding comprises a plurality of phase windings arranged on a stator core, and an even number layer is formed on the stator core in the radial direction; each phase winding is formed by connecting a plurality of conductor groups in series along the circumferential direction of the stator core, or each phase winding is formed by connecting a plurality of conductors in parallel branches along the circumferential direction of the stator core, and K is a multiple of 2 of the number of slots of each phase of each pole; the plurality of conductor sets includes: q first conductor groups, a plurality of second conductor groups, a plurality of third conductor groups, and Q fourth conductor groups, Q being an integer of 1 or more; the adopted conductors are few in types and simple in arrangement mode, and bus bars can be omitted, so that the twisting direction of welding end parts extending towards the inside of the same layer of slots in the stator core slot is consistent with the twisting slot pitch, the lead ends and neutral points between windings of each phase are arranged on any layer of any radial slot, the complexity of the manufacturing process is reduced, the production cost is reduced, and the processing efficiency is improved.

Description

Motor stator and motor

Technical Field

The utility model relates to a motor field particularly, relates to a motor stator and motor.

Background

The stator winding comprises a plurality of hairpin coils, and the hairpin coils penetrate into a slot of a stator core according to a certain arrangement mode to form a single-phase winding or a multi-phase winding of a required motor; in the prior art, more than 90% of stator windings are all provided with the number of slots of each pole and each phase being more than or equal to 2, but if the stator windings are connected in series among phases, the twisting directions of the welding ends in the same layer of slots or the distances among the twisting slots are inconsistent, the manufacturing process is complex, the forming is difficult, the production cost is high, and the processing efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a motor stator and motor, the kind of the conductor of adoption is few, and the mode of arranging is simple, can cancel busbar and busbar for the welding tip distortion direction that the inslot portion that is located stator core inslot radial same layer extends is unanimous with distortion groove distance, realizes that lead wire end and neutral point between each phase winding set up in any one deck in same radial arbitrary groove, reduces the preparation technology complexity, reduction in production cost improves machining efficiency.

In order to achieve the above object, according to an aspect of the present invention, there is provided a motor stator including: an electric machine stator comprising:

a stator core having a plurality of core slots formed on a radially inner surface thereof and spaced apart at predetermined slot pitches in a circumferential direction of the stator core;

a stator winding including a plurality of phase windings mounted on the stator core and forming an even number of layers in a radial direction of the stator core;

each phase winding is formed by connecting a plurality of conductor groups in series along the circumferential direction of the stator core, or each phase winding is formed by connecting a plurality of conductors in parallel branches along the circumferential direction of the stator core, and K is a multiple of 2 of the number of slots of each phase of each pole;

the plurality of conductor sets includes: q first conductor groups, a plurality of second conductor groups, a plurality of third conductor groups, and Q fourth conductor groups, Q being an integer of 1 or more;

wherein the first conductor set includes: the two first conductors of the first conductor group are positioned in the radially outermost layer of the stator core;

the second conductor set includes: the second large conductor and the second small conductor, or the second conductor group includes: each conductor of the second conductor group comprises two in-slot parts positioned in different iron core slots, a wire inserting end positioned outside the iron core slots and two welding ends positioned outside the iron core slots and opposite in extension direction, the two in-slot parts of each conductor of each second conductor group are respectively positioned in N layers and N +1 layers which are adjacent to each other in the radial direction of the stator iron core, wherein N is an odd number;

the pitch between the two groove interiors of the second large conductor of the second conductor group is a long pitch, and the pitch between the two groove interiors of the second small conductor of the second conductor group is a full pitch;

or the pitch between the two groove interiors of the second large conductor of the second conductor group is a full pitch, and the pitch between the two groove interiors of the second small conductor of the second conductor group is a short pitch;

or the pitch between the two groove interiors of the sixth conductor of the second conductor group is a long pitch;

or the pitch between the two groove interiors of the sixth conductor of the second conductor group is a short pitch;

the third conductor set includes: each conductor of the third conductor group comprises two slot interiors positioned in different iron core slots, a wire inserting end positioned outside the iron core slots and two welding ends positioned outside the iron core slots and opposite in extending direction, and the two slot interiors of each conductor of the third conductor group are respectively positioned in an N +1 layer and an N +2 layer which are radially adjacent to the stator iron core;

the fourth conductor set includes: the fourth big conductor and the fourth small conductor, every conductor of fourth conductor group is including being located two inslots of the inside in different iron core slots, being located the plug wire end of the outside in iron core slot and being located the outside in iron core slot and two weld ends that the extending direction is the same, and two inslots of every conductor of fourth conductor group are inside all to be located the radial innermost layer of stator core.

Further, the pitch between the two groove interiors of the first conductor group is a full pitch, the pitch between the two groove interiors of the fourth large conductor of the fourth conductor group is a long pitch, and the pitch between the two groove interiors of the fourth small conductor of the fourth conductor group is a short pitch.

Furthermore, the phase winding is provided with a plurality of first connecting welding ends and a plurality of second connecting welding ends which are connected together, the welding ends positioned on the same radial adjacent M-1 layers of the stator core are the first connecting welding ends, the welding ends positioned on the same radial adjacent M layers of the stator core are the second connecting welding ends, and M is an even number.

Further, when the pitch between the two groove interiors of the second large conductor of the second conductor group is a long pitch and the pitch between the two groove interiors of the second small conductor of the second conductor group is a full pitch; the two conductors of the third conductor group are the same third conductor, the pitch between the two groove interiors of the third conductor is a long pitch, and/or the two conductors of each third conductor group of the phase winding are a fifth large conductor and a fifth small conductor, the pitch between the two groove interiors of the fifth large conductor is a long pitch, and the pitch between the two groove interiors of the fifth small conductor is a whole pitch; the sum of the span of the first connection weld end and the span of the second connection weld end is the short pitch.

Further, when the pitch between the two groove interiors of the second large conductor of the second conductor group is a full pitch and the pitch between the two groove interiors of the second small conductor of the second conductor group is a short pitch; the two conductors of the third conductor set are identical third conductors having a short pitch between the two slot interiors and/or the two conductors of each third conductor set of the phase winding are a fifth large conductor having a full pitch between the two slot interiors, a fifth small conductor having a short pitch between the two slot interiors and the sum of the span of the first and second connection pads being a long pitch.

Further, when the pitch between the two groove interiors of the sixth conductor of the second conductor group is a long pitch; the two conductors of the third conductor group are the same third conductor, and the pitch between the two groove interiors of the third conductor is a long pitch, and/or the two conductors of the third conductor group are a fifth large conductor and a fifth small conductor, the pitch between the two groove interiors of the fifth large conductor is a long pitch, and the pitch between the two groove interiors of the fifth small conductor is a whole pitch; the sum of the span of the first connection weld end and the span of the second connection weld end is the short pitch.

Further, when the pitch between the two groove interiors of the sixth conductor of the second conductor group is a short pitch; the two conductors of the third conductor group are the same third conductor, and the pitch between the two groove interiors of the third conductor is a short pitch, and/or the two conductors of the third conductor group are a fifth large conductor and a fifth small conductor, the pitch between the two groove interiors of the fifth large conductor is a full pitch, and the pitch between the two groove interiors of the fifth small conductor is a short pitch; the sum of the span of the first connection weld end and the span of the second connection weld end is a long pitch.

Further, each weld end of each conductor set of each phase winding is located outside the first end of the stator core, and each plug end of each conductor set of each phase winding is located outside the second end of the stator core.

Furthermore, the welding ends of the phase windings except the welding ends connected with the outgoing lines are located outside the second end of the stator core, each welding end of each conductor of each remaining conductor group in the phase windings is located outside the first end of the stator core, and each plug line end of each conductor group of each phase winding is located outside the second end of the stator core.

According to another aspect of the present invention, there is provided a motor, including the above-mentioned motor stator.

Use the technical scheme of the utility model, a motor stator, include: a stator core having a plurality of core slots formed on a radially inner surface thereof and spaced apart at predetermined slot pitches in a circumferential direction of the stator core; a stator winding including a plurality of phase windings mounted on the stator core and forming an even number of layers in a radial direction of the stator core; each phase winding is formed by connecting a plurality of conductor groups in series along the circumferential direction of the stator core, or each phase winding is formed by connecting a plurality of conductors in parallel branches along the circumferential direction of the stator core, and K is a multiple of 2 of the number of slots of each phase of each pole; the plurality of conductor sets includes: q first conductor groups, a plurality of second conductor groups, a plurality of third conductor groups, and Q fourth conductor groups, Q being an integer of 1 or more; wherein the first conductor set includes: the two first conductors of the first conductor group are positioned in the radially outermost layer of the stator core; the second conductor set includes: the second large conductor and the second small conductor, or the second conductor group includes: each conductor of the second conductor group comprises two in-slot parts positioned in different iron core slots, a wire inserting end positioned outside the iron core slots and two welding ends positioned outside the iron core slots and opposite in extension direction, the two in-slot parts of each conductor of each second conductor group are respectively positioned in N layers and N +1 layers which are adjacent to each other in the radial direction of the stator iron core, wherein N is an odd number; the pitch between the two groove interiors of the second large conductor of the second conductor group is a long pitch, and the pitch between the two groove interiors of the second small conductor of the second conductor group is a full pitch; or the pitch between the two groove interiors of the second large conductor of the second conductor group is a full pitch, and the pitch between the two groove interiors of the second small conductor of the second conductor group is a short pitch; or the pitch between the two groove interiors of the sixth conductor of the second conductor group is a long pitch; or the pitch between the two groove interiors of the sixth conductor of the second conductor group is a short pitch; the third conductor set includes: each conductor of the third conductor group comprises two slot interiors positioned in different iron core slots, a wire inserting end positioned outside the iron core slots and two welding ends positioned outside the iron core slots and opposite in extending direction, and the two slot interiors of each conductor of the third conductor group are respectively positioned in an N +1 layer and an N +2 layer which are radially adjacent to the stator iron core; the fourth conductor set includes: the fourth big conductor and the fourth small conductor, every conductor of fourth conductor group is including being located two inslots of the inside in different iron core slots, being located the plug wire end of the outside in iron core slot and being located the outside in iron core slot and two weld ends that the extending direction is the same, and two inslots of every conductor of fourth conductor group are inside all to be located the radial innermost layer of stator core. The above-mentioned technical scheme of adoption of this application, the kind of the conductor of adoption is few, and the mode of arranging is simple, can cancel busbar and busbar for the welding tip distortion direction that the inslot that is located stator core inslot radial same layer extends is unanimous with distortion groove pitch, realizes that lead terminal and neutral point between each phase winding set up in any one layer of same radial arbitrary groove, reduces the preparation technology complexity, reduction in production cost, improvement machining efficiency.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of a motor stator according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a stator winding according to a first embodiment of the present invention;

FIG. 3 is a schematic structural view of an insulation paper in a slot of a stator of a first motor according to an embodiment of the present invention;

fig. 4 is a schematic structural view of insulation paper in a stator slot of a second motor according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of an insulation paper in a stator slot of a third motor according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of an insulation paper in a slot of a fourth motor stator according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a first conductor according to a first embodiment of the present invention;

fig. 8 is a schematic structural diagram of a fourth conductor set according to a first embodiment of the present invention;

fig. 9 is a schematic structural diagram of a sixth conductor according to a first embodiment of the present invention;

fig. 10 is a schematic structural diagram of a third conductor according to a first embodiment of the present invention;

fig. 11 is a schematic structural diagram of a third conductor set according to a second embodiment of the present invention;

fig. 12 is a schematic structural diagram of a second conductor set according to a fourth embodiment of the present invention;

fig. 13 is a schematic diagram of a planar expansion of a plug end of a middle phase winding according to an embodiment of the present invention;

fig. 14 is a schematic diagram of a plane expansion of the plug end of the phase winding according to the second embodiment of the present invention;

fig. 15 is a schematic diagram of a plane expansion of a plug end of a phase winding according to a third embodiment of the present invention;

fig. 16 is a schematic diagram of a plane expansion of a plug end of a phase winding in the fourth embodiment of the present invention;

fig. 17 is a schematic diagram of a plane expansion of a plug end of a phase winding in the fifth embodiment of the present invention;

fig. 18 is a schematic diagram of a plane expansion of a plug end of a phase winding in six embodiments of the present invention;

fig. 19 is a schematic diagram of a plane development of a welding end of a phase winding according to one embodiment to six embodiments of the present invention;

fig. 20 is a schematic diagram of a plane expansion of a plug end of a phase winding in the seventh embodiment of the present invention;

fig. 21 is a schematic diagram of a plane expansion of a plug end of an eighth phase winding according to an embodiment of the present invention;

fig. 22 is a schematic diagram of a plane expansion of a plug end of a phase winding in the ninth embodiment of the present invention;

fig. 23 is a schematic diagram of a plane expansion of a plug end of a ten-phase winding according to an embodiment of the present invention;

fig. 24 is a schematic diagram of a plane expansion of the plug end of an eleventh phase winding according to the embodiment of the present invention;

fig. 25 is a schematic diagram of a plug end plane development of a twelve-phase winding according to an embodiment of the present invention;

fig. 26 is a schematic expanded view of a welding end plane of a phase winding in the seventh to twelfth embodiments of the present invention;

fig. 27 is a schematic plan view showing a thirteenth phase winding according to the embodiment of the present invention;

fig. 28 is a schematic plane development view of a phase winding in the fourteenth embodiment of the present invention;

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

It should be noted that the terms "first", "second", and the like in the description and claims of the present invention and the accompanying drawings are used for distinguishing different objects, and are not intended to limit a specific order. The embodiments of the present invention can be implemented individually, and can be implemented by combining each other between the embodiments, and the embodiments of the present invention are not limited to this.

The utility model provides a motor stator. In fig. 1, the extending direction of A1a2 is parallel to the axial direction of the stator core, and the pitch in the present application is the interval between two slot inner parts 301 of the same conductor along the circumferential direction, or the pitch is the sum of the span between the slot inner parts 301 corresponding to one welding end of one conductor and the span between the slot inner parts 301 corresponding to one welding end of the other conductor; it should be noted that the first layer of the radial inner layer of the stator core in the present application may be the first layer of the inner layer in the direction away from the central axis of the stator core, and may also be the first layer of the inner layer in the direction close to the central axis of the stator core.

As shown in fig. 1, an embodiment of the present invention provides a motor stator, including: a stator core 20, the stator core 20 having a plurality of core slots 21 formed on a radially inner surface thereof and spaced apart at predetermined slot pitches in a circumferential direction of the stator core;

as shown in fig. 1 to 2, 13 to 28, the stator winding 10, which includes a plurality of phase windings mounted on the stator core 20 so as to be different from each other in electrical phase and form an even number of layers in the radial direction of the stator core 20, forms 4 layers in the radial direction of the stator core for the phase windings (U-phase winding or V-phase winding or W-phase winding) in the present embodiment; the even number of layers may be four, six, eight, or more.

Referring to fig. 1 to 28, in the stator winding 10 in the present embodiment, the stator winding 10 is mounted on the stator core 20, that is, a plurality of phase windings mounted on the stator core 20 so as to be different from each other in electrical phase, wherein the stator winding 10 is a three-phase (i.e., U-phase winding, V-phase winding, W-phase winding) winding, and each phase slot of each pole is equal to or equal to 2; two slots 21 are provided for each pole of the rotor, the number of slots per pole per phase being 2 in the present embodiment, the rotor having eight poles and being such that the number of slots 21 provided in the stator core 20 is equal to 48 (i.e., 2X8X3) for each phase of the three-phase stator winding 10, and further, in the present embodiment, the stator core 20 defines one tooth 22 by two adjacent slots 21. in the present embodiment, the stator core 20 is formed by laminating a plurality of annular magnetic steel plates to form both end faces 25, 26 in the axial direction of the stator core, and other conventional metal plates may be used instead of the magnetic steel plates.

As shown in fig. 13 to 26, in the first to twelfth embodiments of the present invention, each phase winding (U-phase winding, V-phase winding, W-phase winding) includes 1 first conductor group, 12 second conductor groups, 2 third conductor groups, and 1 fourth conductor group (Q is equal to 1 in this case) connected in series, and as shown in fig. 27, in the thirteenth embodiment, each phase winding (U-phase winding, V-phase winding, W-phase winding) is a 2-branch parallel winding, and the 2-branch parallel winding includes 2 first conductor groups, 8 second conductor groups, 4 third conductor groups, and 2 fourth conductor groups (K is equal to 2 in this case, Q is equal to 2 in this case); as shown in fig. 28, in the fourteenth embodiment, each phase winding (U-phase winding, V-phase winding, W-phase winding) includes 1 first conductor group, 12 second conductor groups, 2 third conductor groups, and 1 fourth conductor group (Q is equal to 1 at this time) connected in series, and the fourteenth embodiment differs from the seventh embodiment in that one conductor of one second conductor group of the 12 second conductor groups is opened to form two conductors 400, although one conductor of any one of the first to twelfth embodiments in the present application may be opened at the second end in the axial direction of the stator core, to form the fourteenth embodiment in the present application.

As shown in fig. 7 and 13 to 28, in the first to fourteenth embodiments, the first conductor set includes: the two identical first conductors 150 are arranged, each first conductor 150 comprises two slot interiors 301 located inside the same radial different iron core slots of the stator core, a wire inserting end 302 located outside the iron core slot 21, the wire inserting end 302 located outside the axial outer 25 end of the iron core slot 21 and connected with the two slot interiors 301 of the conductor, two welding ends 303 located outside the iron core slot and extending in the same direction (both towards the left), the two welding ends 303 located outside the axial outer 26 end of the iron core slot 21 and connected with the two slot interiors 301 of the conductor in the same layer, and the two slot interiors of the first conductors are located on the first layer of the radial outermost layer of the stator core; the two slot interiors of the first conductor 150 of the first conductor group are located in the core slots 25, 31, and the two slot interiors of the second first conductor 150 of the first conductor group are located in the core slots 26, 32, so that it can be seen that the two slot interiors of the two first conductors 150 of the first conductor group are respectively located in two core slots adjacent to the stator core in the circumferential direction.

As shown in fig. 9, 13 to 15, 20 to 22, and 27, in the first to third embodiments and the thirteenth embodiment, the second conductor set includes: two identical sixth conductors 350, each sixth conductor 350 includes two slot interiors 301 located inside different core slots of two radially adjacent layers of the stator core, a wire inserting end 302 located outside the core slot 21, the wire inserting end 302 located inside the two axially outer 25 ends of the core slot 21 and connected to the two slot interiors 301 of the conductor, two welding ends 303 located outside the core slot and extending in opposite directions (the extending directions of the two welding ends are opposite), the two welding ends 303 located at the axially outer 26 ends of the core slot 21 and connected to the two slot interiors 301 of the conductor in the same layer respectively, two slot interiors of one second conductor group are located on the 1 st layer and the 2 nd layer radially adjacent to the stator core, and two slot interiors of the other second conductor are located on the 3 rd layer and the 4 th layer radially adjacent to the stator core. The two inside grooves of the first sixth conductor 350 of the second conductor group are located in the core grooves 2, 7, and the two inside grooves of the second sixth conductor 350 of the second conductor group are located in the core grooves 3, 8, so that it can be seen that the pitch between the two inside grooves of the two sixth conductors 350 of the second conductor group is a short pitch (the pitch of the sixth conductor 350 is a short pitch 5 in the first to third embodiments, and the thirteenth embodiment), and the two inside grooves of the two sixth conductors 350 of the second conductor group are respectively located in the two core grooves adjacent to each other in the circumferential direction of the stator core.

As shown in fig. 12, 16 to 18, in the fourth to sixth embodiments, the second conductor set includes: two different conductors, second large conductor 300A, each of the second large conductor 300A and the second small conductor 300B of the second conductor group includes two slot interiors 301 located inside two different radially adjacent core slots of the stator core, a wire inserting end 302 located outside the core slot 21, the wire inserting end 302 located outside the core slot 21 and connected to the two slot interiors 301 of the conductor at the axially outer 25 end of the core slot 21, two welding ends 303 located outside the core slot and extending in opposite directions (the extending directions of the two welding ends are opposite), the two welding ends 303 located at the axially outer 26 end of the core slot 21 and connected to the two slot interiors 301 of the conductor in the same layer, the two slot interiors of each conductor of the different second conductor groups are located on the 1 st layer and the 2 nd layer radially adjacent to the stator core, and the two slot interiors of each conductor of the other second conductor group are located on the 3 rd layer and the 4 th layer radially adjacent to the stator core. The two groove interiors of the second large conductor 300A of the second conductor group are located in the core grooves 2, 8, and the two groove interiors of the second small conductor 300B of the second conductor group are located in the core grooves 3, 7, whereby it can be seen that the pitch between the two groove interiors of the second large conductor 300A of the second conductor group is a full pitch (the full pitch is 6 in the present embodiment), and the pitch between the two groove interiors of the second small conductor 300B of the second conductor group is a short pitch (the pitch of the second small conductor 300B of the second conductor group in the fourth to sixth embodiments is a short pitch 4), whereby it can be seen that the two groove interiors of the second large conductor 300A of the second conductor group surround the second small conductor 300B of the second conductor group.

As shown in fig. 9, 20 to 22, and 28, in the seventh to ninth embodiments, and the fourteenth embodiment, the second conductor set includes: two identical sixth conductors 350, each sixth conductor 350 includes two slot interiors 301 located inside two radially adjacent different core slots of the stator core, a wire insertion end 302 located outside the core slot 21, the wire insertion end 302 located outside the core slot 21 and connected to the two slot interiors 301 of the conductor at the axially outer 25 end of the core slot 21, two welding ends 303 located outside the core slot and extending in opposite directions (the extending directions of the two welding ends are opposite), the two welding ends 303 located at the axially outer 26 end of the core slot 21 and connected to the two slot interiors 301 of the conductor in the same layer respectively, two slot interiors of one second conductor of different second conductor groups are located on the 1 st layer and the 2 nd layer which are radially adjacent to the stator core, and the two slot interiors of the other second conductor are located on the 3 rd layer and the 4 th layer which are radially adjacent to the stator core. The two inside-slot portions of the first sixth conductor 350 of the second conductor group are located in the core slots 1 and 8, and the two inside-slot portions of the second sixth conductor 350 of the second conductor group are located in the core slots 2 and 9, so that it can be seen that the pitch between the two inside-slot portions of the two sixth conductors 350 of the second conductor group is a long pitch (the long pitch is 7 in the present embodiment), and the two inside-slot portions of the two sixth conductors 350 of the second conductor group are respectively located in the two core slots adjacent to each other in the circumferential direction of the stator core.

As shown in fig. 12, 23 to 25, in the tenth to twelfth embodiments, the second conductor set includes: two different conductors, second large conductor 300A, each of the second small conductor 300B, the second large conductor 300A and the second small conductor 300B of the second conductor group includes two slot interiors 301 located inside different slots, a wire insertion end 302 located outside the core slot 21, the wire insertion end 302 located at the axially outer 25 end of the core slot 21 and connected to the two slot interiors 301 of the conductor, two welding ends 303 located outside the core slot and extending in opposite directions (the two welding ends extend in opposite directions), the two welding ends 303 located at the axially outer 26 end of the core slot 21 and connected to the two slot interiors 301 of the conductor in the same layer respectively, the two slot interiors of each conductor of one second conductor group are located on the 1 st layer and the 2 nd layer which are radially adjacent to the stator core, and the two slot interiors of each conductor of the other second conductor group are located on the 3 rd layer and the 4 th layer which are radially adjacent to the stator core. The two groove interiors of the second large conductor 300A of the second conductor group are located in the core grooves 1, 9, and the two groove interiors of the second small conductor 300B of the second conductor group are located in the core grooves 2, 8, whereby it can be seen that the pitch between the two groove interiors of the second large conductor 300A of the second conductor group is a long pitch (the long pitch is 8 in the present embodiment), and the pitch between the two groove interiors of the second small conductor 300B of the second conductor group is a full pitch (the full pitch is 6 in the present embodiment), and it can be seen that the two groove interiors of the second large conductor 300A of the second conductor group surround the second small conductor 300B of the second conductor group.

As shown in fig. 1 to 28, in the first to fourteenth embodiments, the third conductor set includes: two conductors 250(200A, 200B), each conductor 250(200A, 200B) includes two slot interiors 301 located inside different core slots, a wire insertion end 302 located outside the core slot 21, the wire insertion end 302 located outside the core slot 21 and axially outside 25 ends of the core slot 21 and connected with the two slot interiors 301 of the conductor, two welding ends 303 located outside the core slot and extending in opposite directions (the extending directions of the two welding ends are opposite), the two welding ends 303 located outside the core slot 21 and axially outside 26 ends are respectively connected with the two slot interiors 301 of the conductor in the same layer, and the two slot interiors of the conductor of the third conductor group are located on the 2 nd layer and the 3 rd layer which are radially adjacent to the stator core.

As shown in fig. 8, 13 to 28, in the first to fourteenth embodiments, the fourth conductor set includes: each of the fourth large conductor 100A and the fourth small conductor 100B of the fourth conductor group includes two slot interiors 301 located inside different core slots, a wire inserting end 302 located outside the core slot 21, the wire inserting end 302 located at the axially outer 25 end of the core slot 21 and connected to the two slot interiors 301 of the conductor, two welding ends 303 located outside the core slot and extending in the same direction (both right), the two welding ends 303 located at the axially outer 26 end of the core slot 21 and connected to the two slot interiors 301 of the conductor in the same layer, and the two slot interiors of each conductor of the fourth conductor group are located in the first layer (the fourth layer located on the radially outermost layer) of the radially innermost layer of the stator core; the two slot interiors of the fourth large conductor 100A of the fourth conductor group are located in the core slots 19, 26, and the two slot interiors of the fourth small conductor 100B of the fourth conductor group are located in the core slots 20, 25, whereby it can be seen that the two slot interiors of the fourth large conductor 100A of the fourth conductor group surround the two slot interiors of the fourth small conductor 100B. According to the technical scheme of the motor stator in the application embodiment, a bus bar which is connected in series or in parallel among windings of each phase in the related technology is omitted, the first conductor group, the second conductor group, the third conductor group and the fourth conductor group of each phase can be directly connected, each phase of winding and a neutral point can be arranged in any layer of any iron core slot and any layer of any winding, the complexity of the manufacturing process is reduced, the production cost is reduced, the material cost is reduced, and the processing efficiency is improved. Therefore, the technical scheme of the embodiment of the application effectively solves the problems of complex manufacturing process, high production cost and low processing efficiency of the hairpin winding in the related technology.

As shown in fig. 7, 8, 9, and 10, in the first to fourteenth embodiments, the two groove interiors of the first conductor group are located in the core grooves 25 and 31, respectively, and thus it can be seen that the pitch between the two groove interiors of the first conductor is the full pitch 6, and the two groove interiors of the fourth large conductor of the fourth conductor group are located in the core grooves 20 and 27, respectively, and thus it can be seen that the pitch between the two groove interiors of the fourth large conductor 100A is the long pitch 7, and the two groove interiors of the fourth small conductor of the fourth conductor group are located in the

core grooves

21 and 26, respectively, and thus it can be seen that the pitch between the two groove interiors of the fourth small conductor 100B is the short pitch 5;

with reference to fig. 13, 19 and 27, in the first and the thirteenth embodiments, the phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2 third conductor sets, that is, includes two identical third conductor sets, and when the even-numbered layer is 6, the U-phase winding includes 4 third conductor sets, and when the even-numbered layer is 8, the U-phase winding includes 6 third conductor sets; the phase winding (U-phase winding or V-phase winding or W-phase winding) is provided with a plurality of first connecting and welding ends and second connecting and welding ends which are connected together, the welding end positioned on a first layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a second layer in the radial direction of the stator core is the second connecting and welding end, the welding end positioned on a third layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a fourth layer in the radial direction of the stator core is the second connecting and welding end, and the sum of the span of the first connecting and welding ends adjacent to the second connecting and welding ends in the same radial direction of the stator core is a long pitch 7; specifically, the pitch of the connection between the first connection welding end of one first conductor 150 or one sixth conductor 350 located in the same radial fourth layer of the stator core and the second connection welding end of one sixth conductor 350 or one third conductor 250 located in the same radial adjacent third layer of the stator core is long pitch 7, and the pitch of the connection between the first connection welding end of the other welding end of one sixth conductor 350 or one third conductor 250 located in the same radial second layer of the stator core and the second connection welding end of one sixth conductor 350 or one fourth large conductor 100A or one fourth small conductor 100B located in the same radial adjacent first layer of the stator core is long pitch 7; the two groove interiors of the sixth conductor of the second conductor group are respectively located in the core grooves 2 and 7, that is, the pitch between the two groove interiors of the sixth conductor is a short pitch 5, the two conductors of the third conductor group are the same third conductor 250, the two groove interiors of the first third conductor 250 of the third conductor group are located in the core grooves 20 and 25, and the two groove interiors of the second third conductor 250 of the third conductor group are located in the core grooves 21 and 26, that is, the pitch between the two groove interiors of the third conductor 250 is a short pitch 5, so that it can be seen that the two groove interiors of the two third conductors 250 of the third conductor group are respectively located in two core grooves adjacent to each other in the circumferential direction of the stator core.

With reference to fig. 14 and 19, in the second embodiment, each phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2 third conductor sets, that is, includes two identical third conductor sets, and when the even number layer is 6, the U-phase winding includes 4 third conductor sets, and when the even number layer is 8, the U-phase winding includes 6 third conductor sets; the phase winding (U-phase winding or V-phase winding or W-phase winding) is provided with a plurality of first connecting and welding ends and second connecting and welding ends which are connected together, the welding end positioned on a first layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a second layer in the radial direction of the stator core is the second connecting and welding end, the welding end positioned on a third layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a fourth layer in the radial direction of the stator core is the second connecting and welding end, and the sum of the span of the first connecting and welding ends adjacent to the second connecting and welding ends in the same radial direction of the stator core is a long pitch 7; specifically, the pitch of the connection between the first connection welding end of one first conductor 150 or one sixth conductor 350 located in the same radial fourth layer of the stator core and the second connection welding end of one sixth conductor 350 or one fifth large conductor 200A or one fifth small conductor 200B located in the same radial adjacent third layer of the stator core is long pitch 7, and the pitch of the connection between the first connection welding end of the other welding end of one sixth conductor 350 or one fifth large conductor 200A or one fifth small conductor 200B located in the same radial second layer of the stator core and the second connection welding end of one sixth conductor 350 or one fourth large conductor 100A or one fourth small conductor 100B located in the same radial adjacent first layer of the stator core is long pitch 7; the two groove interiors of the sixth conductor of the second conductor group are respectively located in the core grooves 2 and 7, that is, the pitch between the two groove interiors of the sixth conductor is a short pitch 5, the two conductors of the third conductor group are different fifth large conductors 200A and fifth small conductors 200B, the two groove interiors of the fifth large conductors 200A of the third conductor group are respectively located in the core grooves 20 and 26, the two groove interiors of the fifth small conductors 200B of the third conductor group are respectively located in the core grooves 21 and 25, that is, the pitch between the two groove interiors of the fifth large conductors 200A is a full pitch 6, the pitch between the two groove interiors of the fifth small conductors 200B is a short pitch 4, and the two groove interiors of the fifth large conductors 200A of the third conductor group surround the two groove interiors of the fifth small conductors 200B of the third conductor group.

As shown in fig. 15 and 19, in the third embodiment, each phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2 third conductor sets, that is, two different third conductor sets, and when the even number layer is 6, the U-phase winding includes 4 third conductor sets, and when the even number layer is 8, the U-phase winding includes 6 third conductor sets; the phase winding (U-phase winding or V-phase winding or W-phase winding) is provided with a plurality of first connecting and welding ends and second connecting and welding ends which are connected together, the welding end positioned on a first layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a second layer in the radial direction of the stator core is the second connecting and welding end, the welding end positioned on a third layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a fourth layer in the radial direction of the stator core is the second connecting and welding end, and the sum of the span of the first connecting and welding ends adjacent to the second connecting and welding ends in the same radial direction of the stator core is a long pitch 7; specifically, the pitch of connecting the first connecting weld end of one first conductor 150 or one sixth conductor 350 located on the same radial fourth layer of the stator core with the second connecting weld end of one sixth conductor 350 or one third conductor 250 or one fifth large conductor 200A or one fifth small conductor 200B located on the same radial adjacent third layer of the stator core is long pitch 7, the pitch of the connection between the first connection welding end of the other welding end of one sixth conductor 350 or third conductor 250 or one fifth large conductor 200A or one fifth small conductor 200B positioned on the same radial second layer of the stator core and the second connection welding end of one sixth conductor 350 or one fourth large conductor 100A or one fourth small conductor 100B positioned on the same radial adjacent first layer of the stator core is long pitch 7; the two groove interiors of the sixth conductor of the second conductor group are respectively located in the core grooves 2 and 7, namely, the pitch between the two groove interiors of the sixth conductor is a short pitch 5, the two conductors of the first third conductor group are different fifth large conductors 200A and fifth small conductors 200B, the two groove interiors of the fifth large conductors 200A of the third conductor group are respectively located in the core grooves 20 and 26, the two groove interiors of the fifth small conductors 200B of the third conductor group are respectively located in the core grooves 21 and 25, namely, the pitch between the two groove interiors of the fifth large conductors 200A is a full pitch 6, the pitch between the two groove interiors of the fifth small conductors 200B is a short pitch 4, and the two groove interiors of the fifth large conductors 200A of the third conductor group surround the fifth small conductors 200B of the third conductor group; the two conductors of the second third conductor group are the same third conductor 250, the two slot interiors of the first third conductor 250 of the third conductor group are located in the core slots 26 and 31, and the two slot interiors of the second third conductor 250 of the third conductor group are located in the core slots 27 and 32, that is, the pitch between the two slot interiors of the third conductor 250 is the short pitch 5, so that it can be seen that the two slot interiors of the two third conductors 250 of the third conductor group are respectively in the two core slots adjacent to each other in the circumferential direction of the stator core.

As shown in fig. 16 and 19, in the fourth embodiment, the phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2 third conductor sets, that is, includes two identical third conductor sets, and when the even number layer is 6, the U-phase winding includes 4 third conductor sets, and when the even number layer is 8, the U-phase winding includes 6 third conductor sets; the phase winding (U-phase winding or V-phase winding or W-phase winding) is provided with a plurality of first connecting and welding ends and second connecting and welding ends which are connected together, the welding end positioned on a first layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a second layer in the radial direction of the stator core is the second connecting and welding end, the welding end positioned on a third layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a fourth layer in the radial direction of the stator core is the second connecting and welding end, and the sum of the span of the first connecting and welding ends adjacent to the second connecting and welding ends in the same radial direction of the stator core is a long pitch 7; specifically, the pitch of connecting the first connecting weld end of one first conductor 150 or one second large conductor 300A or one second small conductor 300B positioned on the same radial fourth layer of the stator core with the second connecting weld end of one second large conductor 300A or one second small conductor 300B or one third conductor 250 positioned on the same radial adjacent third layer of the stator core is long pitch 7, the pitch of the connection between the first connection welding end of the other welding end of one second large conductor 300A or one second small conductor 300B or one third conductor 250 positioned on the same radial second layer of the stator core and the second connection welding end of one second large conductor 300A or one second small conductor 300B or one fourth large conductor 100A or one fourth small conductor 100B positioned on the same radial adjacent first layer of the stator core is long pitch 7; the two slot interiors of the second large conductor of the second conductor group are located in the core slots 2 and 8, respectively, the two slot interiors of the second small conductor of the second conductor group are located in the core slots 3 and 7, respectively, i.e., the pitch between the two slot interiors of the second large conductor is the full pitch 6, the pitch between the two slot interiors of the second small conductor is the short pitch 4, the two conductors of the third conductor group are the same third conductor 250, the two slot interiors of the first third conductor 250 of the third conductor group are located in the core slots 20 and 25, the two slot interiors of the second third conductor 250 of the third conductor group are located in the core slots 21 and 26, i.e., the pitch between the two slot interiors of the third conductor 250 is the short pitch 5, respectively, and thus it can be seen that the two slot interiors of the two third conductors 250 of the third conductor group are located in the two core slots adjacent to the stator core in the circumferential direction.

As shown in fig. 17 and 19, in the fifth embodiment, each phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2 third conductor sets, that is, includes two identical third conductor sets, and when the even number layer is 6, the U-phase winding includes 4 third conductor sets, and when the even number layer is 8, the U-phase winding includes 6 third conductor sets; the phase winding (U-phase winding or V-phase winding or W-phase winding) is provided with a plurality of first connecting and welding ends and second connecting and welding ends which are connected together, the welding end positioned on a first layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a second layer in the radial direction of the stator core is the second connecting and welding end, the welding end positioned on a third layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a fourth layer in the radial direction of the stator core is the second connecting and welding end, and the sum of the span of the first connecting and welding ends adjacent to the second connecting and welding ends in the same radial direction of the stator core is a long pitch 7; specifically, the pitch of connecting the first connecting weld end of one first conductor 150 or one second large conductor 300A or one second small conductor 300B positioned on the same radial fourth layer of the stator core with the second connecting weld end of one second large conductor 300A or one second small conductor 300B or fifth large conductor 200A or fifth small conductor 200B positioned on the same radial adjacent third layer of the stator core is long pitch 7, the pitch of the connection between the first connection welding end of the other welding end of one second large conductor 300A or one second small conductor 300B or one fifth large conductor 200A or one fifth small conductor 200B positioned on the same radial second layer of the stator core and the second connection welding end of one second large conductor 300A or one second small conductor 300B or one fourth large conductor 100A or one fourth small conductor 100B positioned on the same radial adjacent first layer of the stator core is long pitch 7; the two inner slots of the second large conductor of the second conductor set are located in slots 2, 8, respectively, the two inner slots of the second small conductor of the second conductor set are located in slots 3, 7, respectively, that is, the pitch between the inside of the two slots of the second large conductor is the full pitch 6, the pitch between the inside of the two slots of the second small conductor is the short pitch 4, the two conductors of the third conductor group are the different fifth large conductor 200A, the fifth small conductor 200B, the inside of the two slots of the fifth large conductor 200A of the third conductor group are respectively located in the core slots 20 and 26, the inside of the two slots of the fifth small conductor 200B of the third conductor group are respectively located in the core slots 21 and 25, that is, the pitch between the two groove interiors of the fifth large conductor 200A is the full pitch 6, the pitch between the two groove interiors of the fifth small conductor 200B is the short pitch 4, and the two groove interiors of the fifth large conductor 200A of the third conductor group surround the two groove interiors of the fifth small conductor 200B of the third conductor group.

As shown in fig. 18 and 19, in the sixth embodiment, each phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2 third conductor sets, that is, two different third conductor sets, and when the even number layer is 6, the U-phase winding includes 4 third conductor sets, and when the even number layer is 8, the U-phase winding includes 6 third conductor sets; the phase winding (U-phase winding or V-phase winding or W-phase winding) is provided with a plurality of first connecting and welding ends and second connecting and welding ends which are connected together, the welding end positioned on a first layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a second layer in the radial direction of the stator core is the second connecting and welding end, the welding end positioned on a third layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a fourth layer in the radial direction of the stator core is the second connecting and welding end, and the sum of the span of the first connecting and welding ends adjacent to the second connecting and welding ends in the same radial direction of the stator core is a long pitch 7; specifically, the pitch of the first connecting weld end of one first conductor 150 or second large conductor 300A or second small conductor 300B located in the same radial fourth layer of the stator core and the second connecting weld end of one second large conductor 300A or second small conductor 300B or third conductor 250 or fifth large conductor 200A or fifth small conductor 200B located in the same radial adjacent third layer of the stator core is long pitch 7, and the first connecting weld end of the other weld end of one second large conductor 300A or second small conductor 300B or fifth large conductor 200A or fifth small conductor 200B or third conductor 250 located in the same radial second layer of the stator core and the second connecting weld end of one second large conductor 300A or second small conductor 300B or fifth small conductor 200B or third conductor 250 located in the same radial adjacent first layer of the stator core and the second large conductor 300A or second small conductor 300B or fourth large conductor 100A or fourth small conductor 100B located in the same radial adjacent first layer of the stator core The pitch of the connection of the welded ends is a long pitch 7, the two groove interiors of the second large conductor of the second conductor group are respectively located in the grooves 2 and 8, the two groove interiors of the second small conductor of the second conductor group are respectively located in the grooves 3 and 7, namely, the pitch between the two groove interiors of the second large conductor is a whole pitch 6, the pitch between the two groove interiors of the second small conductor is a short pitch 4, the two conductors of the first third conductor group are different fifth large conductors 200A, fifth small conductors 200B, the two groove interiors of the fifth large conductor 200A of the third conductor group are respectively located in the core grooves 20 and 26, the two groove interiors of the fifth small conductor 200B of the third conductor group are respectively located in the core grooves 21 and 25, namely, the pitch between the two groove interiors of the fifth large conductor 200A is a whole pitch 6, the pitch between the two groove interiors of the fifth small conductor 200B is a short pitch 4, and the two groove interiors of the fifth large conductor 200A of the third conductor group surround the fifth small conductor 200A B; the two conductors of the second third conductor group are the same third conductor 250, the two slot interiors of the first third conductor 250 of the third conductor group are located in the core slots 26 and 31, and the two slot interiors of the second third conductor 250 of the third conductor group are located in the core slots 27 and 32, that is, the pitch between the two slot interiors of the third conductor 250 is the short pitch 5, so that it can be seen that the two slot interiors of the two third conductors 250 of the third conductor group are respectively in the two core slots adjacent to each other in the circumferential direction of the stator core.

With reference to fig. 20, 26, and 28, in the seventh embodiment and the fourteenth embodiment, each phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2 third conductor sets, that is, includes two identical third conductor sets, when the even-numbered layer is 6 layers, the U-phase winding includes 4 third conductor sets, and when the even-numbered layer is 8, the U-phase winding includes 6 third conductor sets; the phase winding (U-phase winding or V-phase winding or W-phase winding) is provided with a plurality of first connecting and welding ends and second connecting and welding ends which are connected together, the welding end positioned on a first layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a second layer in the radial direction of the stator core is the second connecting and welding end, the welding end positioned on a third layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a fourth layer in the radial direction of the stator core is the second connecting and welding end, and the sum of the span of the first connecting and welding ends adjacent to the second connecting and welding ends in the same radial direction of the stator core is a short pitch 5; specifically, the pitch of the connection between the first connection welding end of one first conductor 150 or one sixth conductor 350 located in the same radial fourth layer of the stator core and the second connection welding end of one sixth conductor 350 or one third conductor 250 located in the same radial adjacent third layer of the stator core is short pitch 5, and the pitch of the connection between the first connection welding end of the other welding end of one sixth conductor 350 or one third conductor 250 located in the same radial second layer of the stator core and the second connection welding end of one sixth conductor 350 or one fourth large conductor 100A or one fourth small conductor 100B located in the same radial adjacent first layer of the stator core is short pitch 5; the two in-slot portions of the sixth conductor 350 of the second conductor group are located in the core slots 1 and 8, respectively, i.e., the pitch between the two in-slot portions of the second conductor is long pitch 7, the two conductors of the third conductor group are the same third conductor 250, the two in-slot portions of the first third conductor 250 of the third conductor group are located in the core slots 19 and 26, and the two in-slot portions of the second third conductor 250 of the third conductor group are located in the core slots 20 and 27, i.e., the pitch between the two in-slot portions of the third conductor 250 of the second conductor group is long pitch 7, so that it can be seen that the two in-slot portions of the two third conductors 250 of the third conductor group are located in the two core slots adjacent to the stator core in the circumferential direction, respectively.

With reference to fig. 21 and 26, in the eighth embodiment, each phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2 third conductor sets, that is, includes two identical third conductor sets, and when the even number layer is 6, the U-phase winding includes 4 third conductor sets, and when the even number layer is 8, the U-phase winding includes 6 third conductor sets; the phase winding (U-phase winding or V-phase winding or W-phase winding) is provided with a plurality of first connecting and welding ends and second connecting and welding ends which are connected together, the welding end positioned on a first layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a second layer in the radial direction of the stator core is the second connecting and welding end, the welding end positioned on a third layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a fourth layer in the radial direction of the stator core is the second connecting and welding end, and the sum of the span of the first connecting and welding ends adjacent to the second connecting and welding ends in the same radial direction of the stator core is a short pitch 5; specifically, the pitch of the connection between the first connection welding end of one first conductor 150 or one sixth conductor 350 located in the same radial fourth layer of the stator core and the second connection welding end of one sixth conductor 350 or one fifth large conductor 200A or one fifth small conductor 200B located in the same radial adjacent third layer of the stator core is short pitch 5, and the pitch of the connection between the first connection welding end of the other welding end of one sixth conductor 350 or one fifth large conductor 200A or one fifth small conductor 200B located in the same radial second layer of the stator core and the second connection welding end of one welding end of the sixth conductor 350 or the fourth large conductor 100A or the fourth small conductor 100B located in the same radial adjacent first layer of the stator core is short pitch 5; the two groove interiors of the second conductor group are respectively located in the core grooves 1 and 8, that is, the pitch between the two groove interiors of the sixth conductor 350 is long pitch 7, the two conductors of the third conductor group are respectively a fifth large conductor 200A and a fifth small conductor 200B which are not identical, the two groove interiors of the fifth large conductor 200A of the third conductor group are respectively located in the core grooves 19 and 27, the two groove interiors of the fifth small conductor 200B of the third conductor group are respectively located in the core grooves 20 and 26, that is, the pitch between the two groove interiors of the fifth large conductor 200A is long pitch 8, the pitch between the two groove interiors of the fifth small conductor 200B is full pitch 6, and the two groove interiors of the fifth large conductor 200A of the third conductor group surround the fifth small conductor 200B of the third conductor group.

As shown in fig. 22 and 26, in the ninth embodiment, each phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2 third conductor sets, that is, two different third conductor sets, and when the even number layer is 6, the U-phase winding includes 4 third conductor sets, and when the even number layer is 8, the U-phase winding includes 6 third conductor sets; the phase winding (U-phase winding or V-phase winding or W-phase winding) is provided with a plurality of first connecting and welding ends and second connecting and welding ends which are connected together, the welding end positioned on a first layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a second layer in the radial direction of the stator core is the second connecting and welding end, the welding end positioned on a third layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a fourth layer in the radial direction of the stator core is the second connecting and welding end, and the sum of the span of the first connecting and welding ends adjacent to the second connecting and welding ends in the same radial direction of the stator core is a short pitch 5; specifically, the pitch of connecting the first connecting weld end of one first conductor 150 or one sixth conductor 350 located on the same radial fourth layer of the stator core with the second connecting weld end of one sixth conductor 350 or one third conductor 250 or one fifth large conductor 200A or one fifth small conductor 200B located on the same radial adjacent third layer of the stator core is short pitch 5, the pitch of the connection between the first connection welding end of the other welding end of one sixth conductor 350 or third conductor 250 or one fifth large conductor 200A or one fifth small conductor 200B positioned on the same radial second layer of the stator core and the second connection welding end of one sixth conductor 350 or one fourth large conductor 100A or one fourth small conductor 100B positioned on the same radial adjacent first layer of the stator core is short pitch 5; the two groove interiors of the sixth conductor 350 of the second conductor group are respectively located in the core grooves 1 and 8, namely, the pitch between the two groove interiors of the sixth conductor 350 is long pitch 7, the two conductors of the first third conductor group are different fifth large conductor 200A and fifth small conductor 200B, the two groove interiors of the fifth large conductor 200A of the third conductor group are respectively located in the core grooves 19 and 27, the two groove interiors of the fifth small conductor 200B of the third conductor group are respectively located in the core grooves 20 and 26, namely, the pitch between the two groove interiors of the fifth large conductor 200A is long pitch 8, the pitch between the two groove interiors of the fifth small conductor 200B is full pitch 6, and the two groove interiors of the fifth large conductor 200A of the third conductor group surround the fifth small conductor 200B of the third conductor group; the two conductors of the second third conductor group are the same third conductor 250, the two slot interiors of the first third conductor 250 of the third conductor group are located in the core slots 26 and 33, and the two slot interiors of the second third conductor 250 of the third conductor group are located in the core slots 27 and 34, that is, the pitch between the two slot interiors of the third conductor 450 is long pitch 7, so that it can be seen that the two slot interiors of the two third conductors 250 of the third conductor group are respectively in the two core slots adjacent to each other in the circumferential direction of the stator core.

With reference to fig. 23 and 26, in the tenth embodiment, the phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2 third conductor sets, that is, includes two identical third conductor sets, and when the even number layer is 6, the U-phase winding includes 4 third conductor sets, and when the even number layer is 8, the U-phase winding includes 6 third conductor sets; the phase winding (U-phase winding or V-phase winding or W-phase winding) is provided with a plurality of first connecting and welding ends and second connecting and welding ends which are connected together, the welding end positioned on a first layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a second layer in the radial direction of the stator core is the second connecting and welding end, the welding end positioned on a third layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a fourth layer in the radial direction of the stator core is the second connecting and welding end, and the sum of the span of the first connecting and welding ends adjacent to the second connecting and welding ends in the same radial direction of the stator core is a short pitch 5; specifically, the pitch of the connection between the first connection welding end of one first conductor 150 or one second large conductor 300A or one second small conductor 300B positioned on the same radial fourth layer of the stator core and the second connection welding end of one second large conductor 300A or one second small conductor 300B or one third conductor 250 positioned on the same radial adjacent third layer of the stator core is short pitch 5, the pitch of the connection between the first connection welding end of the other welding end of one second large conductor 300A or one second small conductor 300B or one third conductor 250 positioned on the same radial second layer of the stator core and the second connection welding end of one second large conductor 300A or one second small conductor 300B or one fourth large conductor 100A or one fourth small conductor 100B positioned on the same radial adjacent first layer of the stator core is short pitch 5; the two in-slot portions of the second large conductor of the second conductor group are located in the core slots 1 and 9, respectively, the two in-slot portions of the second small conductor of the second conductor group are located in the core slots 2 and 8, respectively, i.e., the pitch between the two in-slot portions of the second large conductor is long pitch 8, the pitch between the two in-slot portions of the second small conductor is full pitch 6, the two conductors of the third conductor group are the same third conductor 250, the two in-slot portions of the first third conductor 250 of the third conductor group are located in the core slots 19 and 26, the two in-slot portions of the second third conductor 250 of the third conductor group are located in the core slots 20 and 27, i.e., the pitch between the two in-slot portions of the third conductor 250 is long pitch 7, respectively, and thus it can be seen that the two in-slot portions of the second third conductor group 250 are located in the two core slots adjacent to the stator core in the circumferential direction.

With reference to fig. 24 and 26, in the eleventh embodiment, each phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2 third conductor sets, that is, includes two identical third conductor sets, and when the even number layer is 6, the U-phase winding includes 4 third conductor sets, and when the even number layer is 8, the U-phase winding includes 6 third conductor sets; the phase winding (U-phase winding or V-phase winding or W-phase winding) is provided with a plurality of first connecting and welding ends and second connecting and welding ends which are connected together, the welding end positioned on a first layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a second layer in the radial direction of the stator core is the second connecting and welding end, the welding end positioned on a third layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a fourth layer in the radial direction of the stator core is the second connecting and welding end, and the sum of the span of the first connecting and welding ends adjacent to the second connecting and welding ends in the same radial direction of the stator core is a short pitch 5; specifically, the pitch of the first connection welding end of one first conductor 150 or one second large conductor 300A or one second small conductor 300B located in the same radial fourth layer of the stator core and the second connection welding end of one second large conductor 300A or one second small conductor 300B or one fifth large conductor 200A or one fifth small conductor 200B located in the same radial adjacent third layer of the stator core is short pitch 5, and the pitch of the first connection welding end of the other welding end of one second large conductor 300A or one second small conductor 300B or one fifth large conductor 200A or one fifth small conductor 200B located in the same radial second layer of the stator core and the second connection welding end of one second large conductor 300A or one second small conductor 300B or one fourth small conductor 100A or one fourth small conductor 100B located in the same radial adjacent first layer of the stator core are short pitch 5 A distance of 5; the two inner slots of the second large conductor of the second conductor set are located in slots 1, 9, respectively, the two inner slots of the second small conductor of the second conductor set are located in slots 2, 8, respectively, that is, the pitch between the two groove interiors of the second large conductor is long pitch 8, the pitch between the two groove interiors of the second small conductor is full pitch 6, the two conductors of the third conductor group are the non-identical fifth large conductor 200A, the fifth small conductor 200B, the two groove interiors of the fifth large conductor 200A of the third conductor group are respectively located in the core grooves 19, 27, the two groove interiors of the fifth small conductor 200B of the third conductor group are respectively located in the core grooves 20, 26, that is, the pitch between the two groove interiors of the fifth large conductor 200A is long pitch 8, the pitch between the two groove interiors of the fifth small conductor 200B is full pitch 6, and the two groove interiors of the fifth large conductor 200A of the third conductor group surround the fifth small conductor 200B of the third conductor group.

As shown in fig. 25 and 26, in the twelfth embodiment, each phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2 third conductor sets, that is, includes two different third conductor sets, and when the even number layer is 6, the U-phase winding includes 4 third conductor sets, and when the even number layer is 8, the U-phase winding includes 6 third conductor sets; the phase winding (U-phase winding or V-phase winding or W-phase winding) is provided with a plurality of first connecting and welding ends and second connecting and welding ends which are connected together, the welding end positioned on a first layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a second layer in the radial direction of the stator core is the second connecting and welding end, the welding end positioned on a third layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a fourth layer in the radial direction of the stator core is the second connecting and welding end, and the sum of the span of the first connecting and welding ends adjacent to the second connecting and welding ends in the same radial direction of the stator core is a short pitch 5; specifically, the pitch of connecting the first connecting weld end of one first conductor 150 or one second large conductor 300A or one second small conductor 300B located in the same radial fourth layer of the stator core and the second connecting weld end of one second large conductor 300A or one second small conductor 300B or one third conductor 250 or one fifth large conductor 200A or one fifth small conductor 200B located in the same radial third layer of the stator core is short pitch 5, and the first connecting weld end of the other weld end of one second large conductor 300A or one second small conductor 300B or one third conductor 250 or one fifth large conductor 200A or one fifth small conductor 200B located in the same radial second layer of the stator core and one second large conductor 300A or one second small conductor 300B or one fourth large conductor 100A or one fourth small conductor 100B located in the same radial adjacent first layer of the stator core The pitch of the second connecting and welding end is a short pitch 5; the two inner parts of the second big conductor of the second conductor group are respectively positioned in the iron core slots 1 and 9, the two inner parts of the second small conductor of the second conductor group are respectively positioned in the iron core slots 2 and 8, that is, the pitch between the two groove interiors of the second large conductor is long pitch 8, the pitch between the two groove interiors of the second small conductor is full pitch 6, the two conductors of the first third conductor group are the different fifth large conductor 200A and the fifth small conductor 200B, the two groove interiors of the fifth large conductor 200A of the third conductor group are respectively located in the core grooves 19 and 27, the two groove interiors of the fifth small conductor 200B of the third conductor group are respectively located in the core grooves 20 and 26, that is, the pitch between the two groove interiors of the fifth large conductor 200A is long pitch 8, the pitch between the two groove interiors of the fifth small conductor 200B is full pitch 6, and the two groove interiors of the fifth large conductor 200A of the third conductor group surround the fifth small conductor 200B of the third conductor group; the two conductors of the second third conductor group are the same third conductor 250, the two slot interiors of the first third conductor 250 of the third conductor group are located in the core slots 26 and 33, and the two slot interiors of the second third conductor 250 of the third conductor group are located in the core slots 27 and 34, that is, the pitch between the two slot interiors of the third conductor 250 is long pitch 7, so that it can be seen that the two slot interiors of the two third conductors 250 of the third conductor group are respectively in the two core slots adjacent to each other in the circumferential direction of the stator core.

With reference to fig. 1 to 27, in the first to thirteenth embodiments, both welding ends of the first conductor group of the phase winding (U-phase winding or V-phase winding or W-phase winding) are located at the 25 outside of the stator slot, both welding ends of the sixth large conductor of the second conductor group are located at the 25 outside of the stator slot, both welding ends of the sixth small conductor of the second conductor group are located at the 25 outside of the stator slot, or both welding ends of the second conductor group are located at the 25 outside of the stator slot, both welding ends of the third conductor group or the fifth large conductor and the fifth small conductor of the third conductor group are located at the 25 outside of the stator slot, both welding ends of the fourth large conductor of the fourth conductor group and the fourth small conductor of the fourth conductor group are located at the 25 outside of the stator slot, that is, each welding end of each conductor group of each phase winding is located at the 25 outside of the stator slot, and wire insertion end of the first conductor group of the phase winding (U-phase winding or V-phase winding) is located at the 25 outside of the stator slot At the end 26 outside the stator slot, the wire plugging ends of the sixth large conductors of the second conductor group are all located at the end 26 outside the stator slot, the wire plugging ends of the sixth small conductors of the second conductor group are all located at the end 26 outside the stator slot, or the wire plugging ends of the second conductors of the second conductor group are all located at the end 26 outside the stator core slot, the wire plugging ends of the third conductors or the fifth large conductors and the fifth small conductors of the third conductor group are all located at the end 26 outside the stator slot, and the wire plugging ends of the fourth large conductors and the fourth small conductors of the fourth conductor group are all located at the end 26 outside the stator slot, that is, each wire plugging end of each conductor group of each phase winding is located at the end 26 outside the stator slot.

With reference to fig. 28, in the fourteenth embodiment, except that the soldering terminal (400 conductor includes a slot interior and two soldering terminals located at two axial end faces of the stator core and connected to the slot interior in the phase winding (U-phase winding or V-phase winding or W-phase winding), the soldering terminal connected to the lead-out wire is a soldering terminal of the 400 conductor located at the second end 26 side of the stator core) is located at the outside of the second end 26 of the stator core, each soldering terminal 303 of each conductor of each remaining conductor group (first conductor group, second conductor group, third conductor group, and fourth conductor group) in the phase winding is located at the outside of the first end 25 of the stator core, and each plug terminal 302 of each conductor group of each phase winding (first conductor group, second conductor group, third conductor group, and fourth conductor group) is located at the outside of the second end 26 of the stator core.

The embodiment also provides a motor, which comprises the motor stator and a motor adopting the motor stator.

The embodiment of the utility model provides a motor includes the motor stator in above-mentioned embodiment, consequently the embodiment of the utility model provides a motor also possesses the beneficial effect that the above-mentioned embodiment described, no longer gives unnecessary details here.

In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; the connection may be mechanical or electrical, may be direct, may be indirect via an intermediate medium (bus connection), or may be communication between the two components. The above-described meaning of what is specifically intended in the present invention can be understood in specific instances by those of ordinary skill in the art. Finally, it should be noted that the above description is only a preferred embodiment of the present invention and the technical principles applied.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. An electric machine stator comprising:

the method is characterized in that: each phase winding is formed by connecting a plurality of conductor groups in series along the circumferential direction of the stator core, or each phase winding is formed by connecting a plurality of conductors in parallel branches along the circumferential direction of the stator core, and K is a multiple of 2 of the number of slots of each phase of each pole;

the second conductor set includes: a second large conductor and a second small conductor, or the second conductor set comprises: each conductor of the second conductor group comprises two in-slot parts positioned in different iron core slots, a wire inserting end positioned outside the iron core slots and two welding ends positioned outside the iron core slots and opposite in extending direction, the two in-slot parts of each conductor of each second conductor group are respectively positioned in N layers and N +1 layers which are adjacent to each other in the radial direction of the stator iron core, wherein N is an odd number;

the third conductor set includes: each conductor of the third conductor group comprises two in-slot parts positioned in different iron core slots, a wire inserting end positioned outside the iron core slots and two welding ends positioned outside the iron core slots and opposite in extension direction, and the two in-slot parts of each conductor of the third conductor group are respectively positioned in the radially adjacent N +1 layer and the radially adjacent N +2 layer of the stator iron core;

the fourth conductor set includes: each conductor of the fourth conductor group comprises two in-slot parts which are positioned in different iron core slots, a wire inserting end which is positioned outside the iron core slots and two welding ends which are positioned outside the iron core slots and have the same extending direction, and the two in-slot parts of each conductor of the fourth conductor group are positioned in the radially innermost layer of the stator iron core.

2. The stator according to claim 1, wherein a pitch between two groove insides of the first conductor group is a full pitch, a pitch between two groove insides of the fourth large conductor of the fourth conductor group is a long pitch, and a pitch between two groove insides of the fourth small conductor of the fourth conductor group is a short pitch.

3. The electric machine stator of claim 2, wherein the phase windings have a plurality of first connecting weld ends and a plurality of second connecting weld ends connected together, the weld ends located in the same radially adjacent M-1 layers of the stator core being the first connecting weld ends, the weld ends located in the same radially adjacent M layers of the stator core being the second connecting weld ends, M being an even number.

4. The motor stator according to claim 3, wherein when the pitch between the two groove interiors of the second large conductor of the second conductor group is a long pitch and the pitch between the two groove interiors of the second small conductor of the second conductor group is a full pitch; the two conductors of the third conductor group are the same third conductor, and the pitch between the two groove interiors of the third conductor is a long pitch, and/or the two conductors of each third conductor group of the phase winding are a fifth large conductor and a fifth small conductor, the pitch between the two groove interiors of the fifth large conductor is a long pitch, and the pitch between the two groove interiors of the fifth small conductor is a full pitch; the sum of the span of the first connection weld and the span of the second connection weld is a short pitch.

5. The motor stator according to claim 3, wherein when the pitch between the two groove insides of the second large conductor of the second conductor group is a full pitch and the pitch between the two groove insides of the second small conductor of the second conductor group is a short pitch; the two conductors of the third conductor group are the same third conductor, and the pitch between the two groove interiors of the third conductor is a short pitch, and/or the two conductors of each third conductor group of the phase winding are a fifth large conductor and a fifth small conductor, the pitch between the two groove interiors of the fifth large conductor is a full pitch, the pitch between the two groove interiors of the fifth small conductor is a short pitch, and the sum of the span of the first connection weld end and the span of the second connection weld end is a long pitch.

6. The motor stator according to claim 3, wherein when a pitch between two slot interiors of the sixth conductors of the second conductor group is a long pitch; the two conductors of the third conductor group are the same third conductor, and the pitch between the two groove interiors of the third conductor is a long pitch, and/or the two conductors of the third conductor group are a fifth large conductor and a fifth small conductor, the pitch between the two groove interiors of the fifth large conductor is a long pitch, and the pitch between the two groove interiors of the fifth small conductor is a whole pitch; the sum of the span of the first connection weld and the span of the second connection weld is a short pitch.

7. The motor stator according to claim 3, wherein when a pitch between two slot interiors of the sixth conductors of the second conductor group is a short pitch; the two conductors of the third conductor group are the same third conductor, and the pitch between the two groove interiors of the third conductor is a short pitch, and/or the two conductors of the third conductor group are a fifth large conductor and a fifth small conductor, the pitch between the two groove interiors of the fifth large conductor is a full pitch, and the pitch between the two groove interiors of the fifth small conductor is a short pitch; the sum of the span of the first connection weld end and the span of the second connection weld end is a long pitch.

8. The electric machine stator of any one of claims 1 to 7, wherein each weld end of each conductor set of the phase winding is located outside the first end of the stator core, and each plug end of each conductor set of each phase winding is located outside the second end of the stator core.

9. The electric machine stator according to any one of claims 1 to 7, wherein the phase windings are located outside the second end of the stator core except for a soldered end to which an outgoing wire is connected, each soldered end of each conductor group of the remaining phase windings is located outside the first end of the stator core, and each plug end of each conductor group of each phase winding is located outside the second end of the stator core.

10. An electrical machine comprising an electrical machine stator according to any one of claims 1 to 9.