CN214626537U

CN214626537U - Motor stator and motor

Info

Publication number: CN214626537U
Application number: CN202023024835.0U
Authority: CN
Inventors: 石旭东
Original assignee: Tianjin Santroll Electric Automobile Technology Co Ltd
Current assignee: Borgwarner Powertrain Tianjin Co ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-11-05
Anticipated expiration: 2030-12-16

Abstract

The utility model provides a motor stator and motor, 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; the method is characterized in that: each phase winding comprises a first conductor group, a plurality of second conductor groups, a plurality of third conductor groups and a fourth conductor group which are connected in series; 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:

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;

the plurality of conductor sets of the phase winding includes: a first conductor set, a plurality of second conductor sets, a plurality of third conductor sets, and a fourth conductor set;

wherein the first conductor set includes: the stator core comprises three same first conductors, wherein each first conductor comprises two slot interiors positioned in different core slots, a wire inserting end positioned outside the core slots and two welding ends positioned outside the core slots and having the same extending direction;

the second conductor set includes: two second large conductors and one second small conductor, or, the second conductor set includes: a second large conductor and two second small conductors; each conductor of each 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 pitch between the two groove interiors of the two second large conductors of the second conductor group is a long pitch, the pitch between the two groove interiors of one second small conductor of the second conductor group is a short pitch,

or the pitch between the two groove interiors of one second large conductor of the second conductor group is a long pitch, the pitch between the two groove interiors of two second small conductors of the second conductor group is a full pitch,

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

or the pitch between the two groove interiors of one second large conductor of the second conductor group is a long pitch, and the pitch between the two groove interiors of two second small conductors 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: two fourth large conductors and one fourth small conductor, or, the fourth conductor group includes: a fourth large conductor and two fourth small conductors; each conductor of the fourth conductor group comprises two slot interiors positioned in different iron core slots, a wire inserting end positioned in the outer portion of the iron core slot and two welding ends positioned in the outer portion of the iron core slot and having the same extending direction, and the two slot interiors of each conductor of the fourth conductor group are positioned in the radially innermost layer of the stator iron 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 two second large conductors of the second conductor group is a long pitch and the pitch between the two groove interiors of one second small conductor of the second conductor group is a short pitch; the three conductors of the third conductor group are the same third conductor, the pitch between the two groove interiors of the third conductor is long pitch, and/or the three conductors of the third conductor group are two fifth large conductors and one fifth small conductor, the pitch between the two groove interiors of the two fifth large conductors of the third conductor group is long pitch, the pitch between the two groove interiors of the one fifth small conductor of the third conductor group is short pitch, and/or the three conductors of the third conductor group are one fifth large conductor and two fifth small conductors, the pitch between the two groove interiors of the one fifth large conductor of the third conductor group is long pitch, and the pitch between the two groove interiors of the two fifth small conductors of the third conductor group is full 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 one second large conductor of the second conductor group is a long pitch and the pitch between the two groove interiors of two second small conductors of the second conductor group is a full pitch; the three conductors of the third conductor group are the same third conductor, the pitch between the two groove interiors of the third conductor is long pitch, and/or the three conductors of the third conductor group are two fifth large conductors and one fifth small conductor, the pitch between the two groove interiors of the two fifth large conductors of the third conductor group is long pitch, the pitch between the two groove interiors of the one fifth small conductor of the third conductor group is short pitch, and/or the three conductors of the third conductor group are one fifth large conductor and two fifth small conductors, the pitch between the two groove interiors of the one fifth large conductor of the third conductor group is long pitch, and the pitch between the two groove interiors of the two fifth small conductors of the third conductor group is full 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 two second large conductors of the second conductor group is a full pitch and the pitch between the two groove interiors of one second small conductor of the second conductor group is a short pitch; the three conductors of the third conductor group are the same third conductor, the pitch between the two groove interiors of the third conductor is a short pitch, and/or the three conductors of the third conductor group are two fifth large conductors and one fifth small conductor, the pitch between the two groove interiors of the two fifth large conductors of the third conductor group is a full pitch, the pitch between the two groove interiors of the one fifth small conductor of the third conductor group is a short pitch, and/or the three conductors of the third conductor group are one fifth large conductor and two fifth small conductors, the pitch between the two groove interiors of the one fifth large conductor of the third conductor group is a long pitch, and the pitch between the two groove interiors of the two fifth small conductors of the third conductor group 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, when the pitch between the two groove interiors of one second large conductor of the second conductor group is a long pitch and the pitch between the two groove interiors of two second small conductors of the second conductor group is a short pitch; the three conductors of the third conductor group are the same third conductor, the pitch between the two groove interiors of the third conductor is a short pitch, and/or the three conductors of the third conductor group are two fifth large conductors and one fifth small conductor, the pitch between the two groove interiors of the two fifth large conductors of the third conductor group is a full pitch, the pitch between the two groove interiors of the one fifth small conductor of the third conductor group is a short pitch, and/or the three conductors of the third conductor group are one fifth large conductor and two fifth small conductors, the pitch between the two groove interiors of the one fifth large conductor of the third conductor group is a long pitch, and the pitch between the two groove interiors of the two fifth small conductors of the third conductor group 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, the long pitch of two second large conductors of the second conductor group is 11, and the short pitch of one second small conductor of the second conductor group is 8;

or the long pitch of one second large conductor of the second conductor group is 12, and the whole pitch of two second small conductors of the second conductor group is 9;

or the whole pitch of two second large conductors of the second conductor group is 9, and the short pitch of one second small conductor of the second conductor group is 6;

or the long pitch of one second large conductor of the second conductor set is 10 and the short pitch of two second small conductors of the second conductor set is 7.

Further, the three conductors of the third conductor set are identical third conductors having a long pitch of 10; or, the long pitch of two fifth large conductors of the third conductor group is 11, and the short pitch of one fifth small conductor of the third conductor group is 8; alternatively, the long pitch of one fifth large conductor of the third conductor set is 12 and the full pitch of the two fifth small conductors of the third conductor set is 9.

Further, the three conductors of the third conductor group are identical third conductors having a short pitch of 8; or the full pitch of two fifth large conductors of the third conductor set is 9 and the short pitch of one fifth small conductor of the third conductor set is 6; or the long pitch of one fifth large conductor of the third conductor set is 10 and the short pitch of two fifth small conductors of the third conductor set is 7.

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

By applying the technical scheme of the utility model, the motor stator comprises a stator core and a stator core, wherein the stator core is provided with a plurality of core slots which are formed on the radial inner surface of the stator core and are spaced at preset slot intervals along the 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; the plurality of conductor sets of the phase winding includes: a first conductor set, a plurality of second conductor sets, a plurality of third conductor sets, and a fourth conductor set; wherein the first conductor set includes: the stator core comprises three same first conductors, wherein each first conductor comprises two slot interiors positioned in different core slots, a wire inserting end positioned outside the core slots and two welding ends positioned outside the core slots and having the same extending direction; the second conductor set includes: two second large conductors and one second small conductor, or, the second conductor set includes: a second large conductor and two second small conductors; each conductor of each 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 pitch between the two groove interiors of the two second large conductors of the second conductor group is a long pitch, the pitch between the two groove interiors of the one second small conductor of the second conductor group is a short pitch, or the pitch between the two groove interiors of the one second large conductor of the second conductor group is a long pitch, the pitch between the two groove interiors of the two second small conductors of the second conductor group is a full pitch, or the pitch between the two groove interiors of the two second large conductors of the second conductor group is a full pitch, the pitch between the two groove interiors of the one second small conductor of the second conductor group is a short pitch, or the pitch between the two groove interiors of the one second large conductor of the second conductor group is a long pitch, and the pitch between the two groove interiors of the two second small conductors 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: two fourth large conductors and one fourth small conductor, or, the fourth conductor group includes: a fourth large conductor and two fourth small conductors; each conductor of the fourth conductor group comprises two slot interiors positioned in different iron core slots, a wire inserting end positioned in the outer portion of the iron core slot and two welding ends positioned in the outer portion of the iron core slot and having the same extending direction, and the two slot interiors of each conductor of the fourth conductor group are positioned in the radially innermost layer of the stator iron 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 fourth conductor set according to a first embodiment of the present invention;

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

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

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

fig. 13 is a schematic structural diagram of a third conductor set in an eighth embodiment of the present invention;

fig. 14 is a schematic structural diagram of a second conductor set according to a ninth embodiment of the present invention;

fig. 15 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. 16 is a schematic diagram of a second phase winding according to the embodiment of the present invention showing a plane expansion of the plug end;

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

fig. 18 is a schematic expanded view of a welding end plane of a phase winding according to one embodiment to the third embodiment of the present invention;

fig. 19 is a schematic diagram of a plane expansion of the plug end of a phase winding in accordance with an embodiment of the present invention;

fig. 20 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. 21 is a schematic diagram of a plane expansion of a plug end of a phase winding in six embodiments of the present invention;

fig. 22 is a schematic expanded view of a welding end plane of a phase winding according to the fourth to sixth embodiments 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.

In the present application, the pitch is the interval between two groove interiors 301 of the same conductor along the circumferential direction, or the pitch is the sum of the span between the groove interiors 301 corresponding to one welding end of one conductor and the span between the groove interiors 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 axial direction away from the center of the stator core, or may be the first layer of the inner layer in the axial direction close to the center 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, 15 to 22, 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 22, 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 3; three slots 21 are provided for each pole of the rotor, the number of slots per pole per phase being 3 in the present embodiment, the rotor has six poles and is provided for each phase of the three-phase stator winding 10, the number of slots 21 provided in the stator core 20 is equal to 54 (i.e., 3X6X3), and further, in the present embodiment, the stator core 20 defines one tooth 22 by two adjacent slots 21, 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.

In the present embodiment, each phase winding (U-phase winding, V-phase winding, W-phase winding) includes 1 first conductor group, 8 second conductor groups, 2 third conductor groups, and 1 fourth conductor group connected in series;

as shown in fig. 1 to 22, in the first to eleventh embodiments, the first conductor set includes: three identical first conductors 150, each first conductor 150 including 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 axial 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 to the left), the two welding ends 303 located outside the axial 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 the first conductors 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 29 and 38, the two slot interiors of the second first conductor 150 of the first conductor group are located in the core slots 30 and 39, and the two slot interiors of the third first conductor 150 of the first conductor group are located in the core slots 31 and 40, so that it can be seen that the two slot interiors of the three first conductors 150 of the first conductor group are respectively located in the three core slots adjacent to each other in the circumferential direction of the stator core.

As shown in fig. 9, 15, and 17, in the first to third embodiments, the second conductor set includes: three different conductors, two second large conductors 600-1A, each of the second large conductor 600A and the second small conductor 600B of the second 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 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 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, 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 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. Two slot interiors of a first second large conductor 600-1A of the second conductor group are located in the core slots 2 and 11, two slot interiors of a second large conductor 600-1A of the second conductor group are located in the core slots 3 and 12, two slot interiors of a second small conductor 600-1B of the second conductor group are located in the core slots 4 and 10, a pitch between two slot interiors of a second large conductor 600-1A of the second conductor group is a full pitch (in the present embodiment, the full pitch is 9), a pitch between two slot interiors of a second small conductor 600-1B of the second conductor group is a short pitch (in the present embodiment, the short pitch is 6), and thus it can be seen that two slot interiors of a first second large conductor 600-1A and two slot interiors of a second large conductor 600-1A of the second conductor group are sequentially located in two core slots circumferentially adjacent to the stator core, and the slot interiors of the two second large conductors 600-1A surround the two slot interiors of the second small conductors 600-1B.

With reference to fig. 14, in an embodiment nine, the second conductor set includes: three different conductors, a second large conductor 600-2A, each of the two second small conductors 600-2B, the second large conductor 600-2A and the second small conductor 600-2B of the second 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, and 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, 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 slot interiors of the second large conductor 600-1A of the second conductor group are located in the core slots 2, 12, the two slot interiors of the first second small conductor 600-2A of the second conductor group are located in the core slots 3, 10, and the two slot interiors of the second small conductor 600-2B of the second conductor group are located in the core slots 4, 11, so that it can be seen that the two slot interiors of the first second small conductor 600-2B of the second conductor group and the two slot interiors of the second small conductor 600-2B are located in turn in the two circumferentially adjacent core slots of the stator core, and the two slot interiors of the second large conductor 600-2A surround the slot interiors of the two second small conductors 600-2B, the pitch between the two slot interiors of the second large conductor 600-2A of the second conductor group is a long pitch (in this embodiment, the long pitch is 10), the pitch between the inside of the two slots of the second small conductor 600-2B of the second conductor group is a short pitch (the short pitch is 7 in the present embodiment).

As shown in fig. 9, 19, 20, and 21, in the fourth to fifth embodiments, the second conductor group includes: three different conductors, two second large conductors 600-1A, each of the second large conductor 600A and the second small conductor 600B of the second 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 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 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, 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 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. Two slot interiors of a first second large conductor 600-1A of the second conductor group are located in the core slots 1 and 12, two slot interiors of a second large conductor 600-1A of the second conductor group are located in the core slots 2 and 13, two slot interiors of a second small conductor 600-1B of the second conductor group are located in the core slots 3 and 11, a pitch between two slot interiors of a second large conductor 600-1A of the second conductor group is a long pitch (the long pitch is 11 in the present embodiment), a pitch between two slot interiors of a second small conductor 600-1B of the second conductor group is a short pitch (the short pitch is 8 in the present embodiment), and thus, it can be seen that two slot interiors of a first second large conductor 600-1A of the second conductor group and two slot interiors of a second large conductor 600-1A of the second conductor group are sequentially located in two core slots circumferentially adjacent to the stator core, and the slot interiors of the two second large conductors 600-1A surround the two slot interiors of the second small conductors 600-1B.

With reference to fig. 14, in an embodiment ten, the second conductor set includes: three different conductors, a second large conductor 600-2A, each of the two second small conductors 600-2B, the second large conductor 600-2A and the second small conductor 600-2B of the second 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, and 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, 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 slot interiors of the second large conductor 600-1A of the second conductor group are located in the core slots 1, 13, the two slot interiors of the first second small conductor 600-2A of the second conductor group are located in the core slots 2, 11, and the two slot interiors of the second small conductor 600-2B of the second conductor group are located in the core slots 3, 12, so that it can be seen that the two slot interiors of the first second small conductor 600-2B of the second conductor group and the two slot interiors of the second small conductor 600-2B are located in turn in the two core slots circumferentially adjacent to the stator core, and the two slot interiors of the second large conductor 600-2A surround the slot interiors of the two second small conductors 600-2B, the pitch between the two slot interiors of the second large conductor 600-2A of the second conductor group is a long pitch (the long pitch is 12 in this embodiment), the pitch between the inside of the two slots of the second small conductor 600-2B of the second conductor group is a full pitch (in this embodiment, the full pitch is 9).

As shown in fig. 1 to 22, in the first to eleventh embodiments, the third conductor set includes: two conductors 450(400-1A, 400-1B, 400-2A, 400-2B), each conductor 450(400-1A, 400-1B, 400-2A, 400-2B) comprises 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 end 25, axially outside, 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 two welding ends extend in opposite directions), the two welding ends 303 located at the end 26, axially outside, of the 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 conductors of the third conductor group are located at the 2 nd layer and the 3 rd layer which are radially adjacent to the stator core.

As shown in fig. 7 and 15 to 22, in the first to sixth embodiments and the eighth to eleventh embodiments, the fourth conductor set includes: two fourth large conductors 100-1A and one fourth small conductor 100-1B, each of the fourth large conductors 100-1A and the fourth small conductors 100-1B 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 located at the first layer (the fourth layer located at the radially outermost layer) of the radially innermost layer of the stator core; the two slot interiors of the first fourth large conductor 100-1A of the fourth conductor set are located in the core slots 19, 29, the two slot interiors of the second fourth large conductor 100-1A of the fourth conductor set are located in the core slots 20, 30, and the two slot interiors of the fourth small conductor 100-1B of the fourth conductor set are located in the core slots 21, 28, so that it can be seen that the two slot interiors of the first fourth large conductor 100-1A of the fourth conductor set and the two slot interiors of the second fourth large conductor 100-1A are located in turn in the two core slots circumferentially adjacent to the stator core, and the slot interiors of the two fourth large conductors 100-1A surround the two slot interiors of the fourth small conductor 100-1B. According to the technical scheme of the motor stator in the embodiment, a bus bar connected in series among the 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 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. 12, in embodiment seven, the fourth conductor set includes: each of the fourth large conductor 100-2A and the fourth small conductor 100-2B 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 at the first layer (the fourth layer located at the radially outermost layer) of the radially innermost layer of the stator core; the two slot interiors of the fourth large conductor 100-2A of the fourth conductor set are located in the core slots 19, 30, the two slot interiors of the first fourth small conductor 100-2B of the fourth conductor set are located in the core slots 20, 28, the two slot interiors of the second fourth small conductor 100-2B of the fourth conductor set are located in the core slots 21, 29, and thus it can be seen that the two slot interiors of the first fourth small conductor 100-2B of the fourth conductor set and the two slot interiors of the second fourth small conductor 100-2B are located in turn in the two core slots circumferentially adjacent to the stator core, and the two slot interiors of the fourth large conductor 100-2A surround the slot interiors of the two fourth small conductors 400-2B. According to the technical scheme of the motor stator in the embodiment, a bus bar connected in series among the 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 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 and 8, in example embodiments one to six and eight to ten, the two groove interiors of the first conductor group are located in the core grooves 29 and 38, respectively, and thus it can be seen that the pitch between the two groove interiors of the first conductor is the full pitch 9, and the two groove interiors of the fourth large conductor of the fourth conductor group are located in the core grooves 19 and 29, respectively, and thus it can be seen that the pitch between the two groove interiors of the fourth large conductor 100-1A is the long pitch 10, and the two groove interiors of the fourth small conductor of the fourth conductor group are located in the core grooves 21 and 28, respectively, and thus it can be seen that the pitch between the two groove interiors of the fourth small conductor 100-1B is the short pitch 7;

as shown in fig. 7 and 11, in the seventh embodiment, the two groove interiors of the first conductor group are respectively located in the core grooves 29 and 38, and thus it can be seen that the pitch between the two groove interiors of the first conductor is the full pitch 9, the two groove interiors of the fourth large conductor of the fourth conductor group are respectively located in the core grooves 19 and 30,

it can be seen that the pitch between the two groove interiors of the fourth large conductor 100-1A is the long pitch 11, and the two groove interiors of the fourth small conductor of the fourth conductor group are located in the core grooves 20, 28, respectively, and thus it can be seen that the pitch between the two groove interiors of the fourth small conductor 100-1B is the short pitch 8;

with reference to fig. 15, in the first embodiment, each phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2Q third conductor sets, Q is equal to 1 in the present embodiment, that is, two identical third conductor sets are included, 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 span of the second connecting and welding ends in the same radial direction of the stator core is a short pitch 8; specifically, the pitch of connecting the first connecting welding end of one first conductor 150 or one second large conductor 600-1A or one second small conductor 600-1B positioned on the same radial fourth layer of the stator core with the second connecting welding end of one second large conductor 600-1A or one second small conductor 600-1B or one third conductor 450 positioned on the same radial adjacent third layer of the stator core is short pitch 8, and the first connecting welding end of the other welding end of one second large conductor 600-1A or one second small conductor 600-1B or one third conductor 450 positioned on the same radial second layer of the stator core with one welding end of one second large conductor 600-1A or one second small conductor 600-1B or one fourth large conductor 100-1A or one fourth small conductor 100-1B positioned on the same radial adjacent first layer of the stator core The connection pitch of the second connection welding end of the connection end is a short pitch 8; the two interiors of the slots of the first second large conductor of the second conductor set are located at the core slots 1 and 12, respectively, the two interiors of the slots of the second large conductor of the second conductor set are located at 2 and 13, respectively, and the two interiors of the slots of the second small conductor of the second conductor set are located at 3 and 11, respectively, i.e., the pitch between the two interiors of the slots of the two second large conductors of the second conductor set is long pitch 11, the pitch between the two interiors of the slots of the second small conductor of the second conductor set is short pitch 8, the three conductors of the third conductor set are the same third conductor 450, the two interiors of the slots of the first third conductor 450 of the third conductor set are located at the core slots 19 and 29, the two interiors of the slots of the second third conductor 450 of the third conductor set are located at the core slots 20 and 30, and the two interiors of the slots of the third conductor 450 of the third conductor set are located at the core slots 21 and 31, i.e., the pitch between the two interiors of the slots of the third conductor 450 of the third conductor set is long pitch 10, it can be seen that two slot interiors of the three third conductors 450 of the third conductor group are respectively in three core slots adjacent to each other in the circumferential direction of the stator core.

With reference to fig. 16, in the second embodiment, each phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2Q third conductor sets, Q is equal to 1 in the present embodiment, that is, two identical third conductor sets are included, 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 span of the second connecting and welding ends in the same radial direction of the stator core is a short pitch 8; specifically, the pitch of connecting the first connecting weld end of one first conductor 150 or one second large conductor 600-1A or one second small conductor 600-1B located in the same radial fourth layer of the stator core with the second connecting weld end of one second large conductor 600-1A or one second small conductor 600-1B or fifth large conductor 400-1A or fifth small conductor 400-1B located in the same radial third layer of the stator core is short pitch 8, and the first connecting weld end of the other weld end of one second large conductor 600-1A or one second small conductor 600-1B or one fifth large conductor 400-1A or one fifth small conductor 400-1B located in the same radial second layer of the stator core with the second large conductor 600-1A or one second small conductor 600-1B located in the same radial first layer of the stator core B, the pitch of the connection of the second connecting welding ends of one welding end of one fourth large conductor 100-1A or one fourth small conductor 100-1B is short pitch 8; the two groove interiors of the first second large conductor of the second conductor group are respectively positioned in the iron core grooves 1 and 12, the two groove interiors of the second large conductor of the second conductor group are respectively positioned in 2 and 13, and the two groove interiors of the second small conductor of the second conductor group are respectively positioned in 3 and 11, namely, the pitch between the two groove interiors of the two second large conductors of the second conductor group is long pitch 11, the pitch between the two groove interiors of the second small conductor of the second conductor group is short pitch 8, the third conductor group comprises two fifth large conductors 400-1A and a fifth small conductor 400-1B, the two groove interiors of the first fifth large conductor 400-1A of the third conductor group are respectively positioned in the iron core grooves 19 and 30, the two groove interiors of the second fifth large conductor 400-1A of the third conductor group are respectively positioned in the iron core grooves 20 and 31, the two groove interiors of the fifth small conductor 400-2B of the third conductor group are respectively positioned in the iron core groove 21, 29, that is, the pitch between the two groove interiors of the two fifth large conductors 400A of the third conductor group is long pitch 11, and the pitch between the two groove interiors of the one fifth small conductor 400B of the third conductor group is short pitch 8, whereby it can be seen that the two groove interiors of the first fifth large conductor 400-1A of the third conductor group and the two groove interiors of the second fifth large conductor 400-1A are located in the two core grooves circumferentially adjacent to the stator core in this order, and the groove interiors of the two fifth large conductors 400-1A surround the two groove interiors of the fifth small conductor 400-1B.

With reference to fig. 17, in the third embodiment, each phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2Q third conductor sets, Q is equal to 1 in the present embodiment, that is, two different third conductor sets are included, 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 span of the second connecting and welding ends in the same radial direction of the stator core is a short pitch 8; specifically, the pitch of connecting the first connecting weld end of one first conductor 150 or second large conductor 600-1A or second small conductor 600-1B in the same radial fourth layer of the stator core with the second connecting weld end of one second large conductor 600-1A or second small conductor 600-1B or third conductor 450 or fifth large conductor 400-1A or fifth small conductor 400-1B in the same radial third layer of the stator core is short pitch 8, and the first connecting weld end of the other weld end of one second large conductor 600-1A or second small conductor 600-1B or fifth large conductor 400-1A or fifth small conductor 400-1B or third small conductor 450 in the same radial second layer of the stator core with the second large conductor 600-1A or second small conductor 600-1B or fifth large conductor 400-1A or fifth small conductor 400-1B in the same radial first layer of the stator core 600-1A or a second small conductor 600-1B or a fourth large conductor 100-1A or a fourth small conductor 100-1B, the pitch of the connection of the second connection weld of one weld of the second large conductor of the second conductor set is 8, the two slot interiors of the first and second large conductors of the second conductor set are respectively located in the core slots 1 and 12, the two slot interiors of the second and second large conductors of the second conductor set are respectively located in 2 and 13, the two slot interiors of the second and second small conductors of the second conductor set are respectively located in 3 and 11, i.e. the pitch between the two slot interiors of the two second large conductors of the second conductor set is 11, the pitch between the two slot interiors of one second small conductor of the second conductor set is 8, the first third conductor set comprises two fifth large conductors 400-1A, one fifth small conductors 400-1B, the two slot interiors of the first fifth large conductor 400-1A of the third conductor set are located in the core slots 19, 30, respectively, the two slot interiors of the second fifth large conductor 400-1A of the third conductor set are located in the core slots 20, 31, respectively, the two slot interiors of the fifth small conductor 400-2B of the third conductor set are located in the core slots 21, 29, respectively, that is, the pitch between the two groove interiors of the two fifth large conductors 400A of the third conductor group is long pitch 11, the pitch between the two groove interiors of the one fifth small conductor 400B of the third conductor group is short pitch 8, it can be seen that the two slot interiors of the first fifth large conductor 400-1A and the two slot interiors of the second fifth large conductor 400-1A of the third conductor group are sequentially located in two circumferentially adjacent core slots of the stator core, and the insides of the grooves of the two fifth large conductors 400-1A surround the insides of the two grooves of the fifth small conductor 400-1B; the three conductors of the second third conductor group are identical third conductors 450, the two slot interiors of the third conductors 450 of the third conductor group are respectively located in the core slots 28 and 38, that is, the pitch between the two slot interiors of the third conductors 450 is the long pitch 10, the two slot interiors of the first third conductors 450 of the third conductor group are located in the core slots 29 and 39, and the two slot interiors of the second third conductors 450 of the third conductor group are located in the core slots 30 and 40, so that it can be seen that the two slot interiors of the three third conductors 450 of the third conductor group are respectively located in the three core slots adjacent to each other in the circumferential direction of the stator core.

With reference to fig. 11, in the eighth embodiment, each phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2Q third conductor sets, Q is equal to 1 in the present embodiment, that is, two identical third conductor sets are included, 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 10; specifically, the pitch of connecting the first connecting weld end of one first conductor 150 or one second large conductor 600-1A or one second small conductor 600-1B located in the same radial fourth layer of the stator core with the second connecting weld end of one second large conductor 600-1A or one second small conductor 600-1B or fifth large conductor 400-2A or fifth small conductor 400-2B located in the same radial third layer of the stator core is short pitch 8, and the first connecting weld end of the other weld end of one second large conductor 600-1A or one second small conductor 600-1B or one fifth large conductor 400-2A or one fifth small conductor 400-2B located in the same radial second layer of the stator core with the second large conductor 600-1A or one second small conductor 600-1B located in the same radial first layer of the stator core Or the pitch of the connection of the second connection weld terminals of one weld terminal of one fourth large conductor 100-1A or one fourth small conductor 100-1B is the short pitch 8; the two groove interiors of the first and second large conductors of the second conductor group are respectively located in the iron core grooves 1 and 12, the two groove interiors of the second and second large conductors of the second conductor group are respectively located in the iron core grooves 2 and 13, the two groove interiors of the second and second small conductors of the second conductor group are respectively located in the iron core grooves 3 and 11, namely, the pitch between the two groove interiors of the second large conductors is long pitch 11, the pitch between the two groove interiors of the second and second small conductors is short pitch 8, the third conductor group comprises a fifth large conductor 400-2A and two fifth small conductors 400-2B, the two groove interiors of the fifth large conductor 400-2A of the third conductor group are respectively located in the iron core grooves 19 and 31, the two groove interiors of the first fifth small conductor 400-2B of the third conductor group are respectively located in the iron core grooves 20 and 29, the two groove interiors of the second and fifth small conductors 400-2B of the third conductor group are respectively located in the iron core grooves 21 and 21, 30, that is, the pitch between the two groove interiors of one fifth large conductor 400-2A of the third conductor group is the long pitch 12, and the pitch between the two groove interiors of two fifth small conductors 400-2B of the third conductor group is the full pitch 9, it can be seen that the two groove interiors of the first fifth small conductor 400-2B of the third conductor group and the two groove interiors of the second fifth small conductor 400-2B are sequentially located in two core grooves circumferentially adjacent to the stator core, and one fifth large conductor 400-1A surrounds the groove interiors of the two fifth small conductors 400-1B.

With reference to fig. 14, in the ninth embodiment, the second conductor set includes one second large conductor 600-2A and two second small conductors 600-2B, two inside grooves of the one second large conductor of the second conductor set are located in the core grooves 1 and 13, respectively, two inside grooves of the first second small conductor of the second conductor set are located in the core grooves 2 and 11, respectively, and two inside grooves of the second small conductor of the second conductor set are located in the core grooves 3 and 12, respectively, that is, a pitch between two inside grooves of the one second large conductor of the second conductor set is a long pitch 12, and a pitch between two inside grooves of the two second small conductors of the second conductor set is a full pitch 9; the difference between the ninth embodiment and the first to third embodiments and the eighth embodiment is only that the number and the pitch of the second large conductors and the second small conductors included in the second conductor group are different, and further description is not repeated herein.

As shown in fig. 19 and 22, in the fourth embodiment, each phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2Q third conductor sets, Q is equal to 1 in the present embodiment, that is, two identical third conductor sets are included, 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 long pitch 10; specifically, the pitch of the connection between the first connection welding end of one first conductor 150 or one second large conductor 600-1A or one second small conductor 600-1B located in the same radial fourth layer of the stator core and the second connection welding end of one second large conductor 600-1A or one second small conductor 600-1B or one third conductor 450 located in the same radial adjacent third layer of the stator core is long pitch 10, and the first connection welding end of the other welding end of one second large conductor 600-1A or one second small conductor 600-1B or one third conductor 450 located in the same radial second layer of the stator core and one welding end of one second large conductor 600-1A or one second small conductor 600-1B or one fourth large conductor 100-1A or one fourth small conductor 100-1B located in the same radial adjacent first layer of the stator core The pitch of the second connecting and welding ends is 10 long; the two interiors of the two slots of the first and second large conductors of the second conductor group are located in the core slots 2 and 11, the two interiors of the two slots of the second and second large conductors of the second conductor group are located in the core slots 3 and 12, the two interiors of the two slots of the second and second small conductors of the second conductor group are located in the core slots 4 and 10, respectively, i.e., the pitch between the two interiors of the two slots of the two second large conductors of the second conductor group is the full pitch 9, the pitch between the two interiors of the two slots of the one second small conductor of the second conductor group is the short pitch 6, the three conductors of the third conductor group are the same third conductor 450, the two interiors of the third conductor 450 of the third conductor group are located in the core slots 20 and 28, respectively, i.e., the pitch between the two interiors of the two slots of the third conductor 450 of the third conductor group is the short pitch 8, the two interiors of the two slots of the first and third conductor 450 of the third conductor group are located in the core slots 20 and 28, the two interiors of the two slots 21, respectively, 29, the two slot interiors of the third conductor 450 of the third conductor group are located in the core slots 22, 30, from which it can be seen that the two slot interiors of the third conductor 450 of the third conductor group are respectively in the three core slots circumferentially adjacent to the stator core.

As shown in fig. 20 and 22, in the fifth embodiment, each phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2Q third conductor sets, Q is equal to 1 in the present embodiment, that is, two identical third conductor sets are included, 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 long pitch 10; specifically, the pitch of the connection between the first connection weld end of one weld end of a first conductor 150 or a second large conductor 600-1A or a second small conductor 600-1B located in the same radial fourth layer of the stator core and the second connection weld end of one weld end of a second large conductor 600-1A or a second small conductor 600-1B or a fifth small conductor 400-1B located in the same radial adjacent third layer of the stator core is 10, and the first connection weld end of the other weld end of one second large conductor 600-1A or a second small conductor 600-1B or a fifth large conductor 400-1A or a fifth small conductor 400-1B located in the same radial second layer of the stator core and the second large conductor 600-1A or a second small conductor 600-1B or a fourth large conductor 100A or a fourth small conductor 600-1B located in the same radial adjacent first layer of the stator core 1A or a fourth small conductor 100-1B, and the pitch of the connection of the second connection welding end of one welding end is long pitch 10; the two groove interiors of the first second large conductor of the second conductor group are respectively positioned in the iron core grooves 2 and 11, the two groove interiors of the second large conductor of the second conductor group are respectively positioned in the iron core grooves 3 and 12, the two groove interiors of the second small conductor of the second conductor group are respectively positioned in the iron core grooves 4 and 10, namely, the pitch between the two groove interiors of the two second large conductors of the second conductor group is a whole pitch 9, the pitch between the two groove interiors of the second small conductor of the second conductor group is a short pitch 6, the third conductor group comprises two fifth large conductors 400-1A and a fifth small conductor 400-1B, the two groove interiors of the first fifth large conductor 400-1A of the third conductor group are respectively positioned in the iron core grooves 20 and 29, the two groove interiors of the second fifth large conductor 400-1A of the third conductor group are respectively positioned in the iron core grooves 21 and 30, the two groove interiors of the fifth small conductor 400-2B of the third conductor group are respectively positioned in the iron core grooves 22, 28, that is, the pitch between the two groove interiors of the two fifth large conductors 400A of the third conductor group is a full pitch 9, and the pitch between the two groove interiors of the one fifth small conductor 400B of the third conductor group is a short pitch 6, it can be seen that the two groove interiors of the first fifth large conductor 400-1A and the two groove interiors of the second fifth large conductor 400-1A of the third conductor group are located in the two core grooves circumferentially adjacent to the stator core in this order, and the groove interiors of the two fifth large conductors 400-1A surround the two groove interiors of the fifth small conductor 400-1B.

As shown in fig. 21 and 22, in the sixth embodiment, the phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2Q third conductor sets, Q is equal to 1 in the present embodiment, that is, two different third conductor sets are included, 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 10; specifically, the pitch of the first connecting weld end of one first conductor 150 or second large conductor 600-1A or second small conductor 600-1B located in the same radial fourth layer of the stator core and the second connecting weld end of one second large conductor 600-1A or second small conductor 600-1B or third conductor 450 or fifth large conductor 400-1A or fifth small conductor 400-1B located in the same radial third layer of the stator core is long pitch 10, and the first connecting weld end of the other weld end of one second large conductor 600-1A or second small conductor 600-1B or fifth large conductor 400-1A or fifth small conductor 400-1B or third conductor 450 located in the same radial second layer of the stator core and the second large conductor 600-1A or second small conductor 600-1B or fifth large conductor 400-1A or fifth small conductor 400-1B or third conductor 600 located in the same radial adjacent first layer of the stator core 1A or a second small conductor 600-1B or a fourth large conductor 100-1A or a fourth small conductor 100-1B, the pitch at which the second connection weld ends of one weld end of the second large conductor of the second conductor set are connected is a long pitch 10, the two slot interiors of the first and second large conductors of the second conductor set are located in the core slots 2 and 11, respectively, the two slot interiors of the second and second large conductors of the second conductor set are located in the slots 3 and 12, respectively, the two slot interiors of the second and small conductors of the second conductor set are located in the slots 4 and 10, respectively, i.e. the pitch between the two slot interiors of the two second large conductors of the second conductor set is a full pitch 9, the pitch between the two slot interiors of one second and small conductor of the second conductor set is a short pitch 6, the first and third conductor sets comprise two fifth large conductors 400-1A and one fifth small conductor 400-1B, the two slot interiors of the first fifth large conductor 400-1A of the third conductor set are located in the core slots 20, 29, respectively, the two slot interiors of the second fifth large conductor 400-1A of the third conductor set are located in the core slots 21, 30, respectively, the two slot interiors of the fifth small conductor 400-1B of the third conductor set are located in the core slots 22, 28, respectively, that is, the pitch between the two groove interiors of the two fifth large conductors 400A of the third conductor group is the full pitch 9, the pitch between the two groove interiors of the one fifth small conductor 400B of the third conductor group is the short pitch 6, it can be seen that the two slot interiors of the first fifth large conductor 400-1A and the two slot interiors of the second fifth large conductor 400-1A of the third conductor group are sequentially located in two circumferentially adjacent core slots of the stator core, and the insides of the grooves of the two fifth large conductors 400-1A surround the insides of the two grooves of the fifth small conductor 400-1B; the three conductors of the second third conductor group are the same third conductor 450, two slot interiors of the second third conductor 450 of the third conductor group are located in the core slots 29 and 37, two slot interiors of the first third conductor 450 of the third conductor group are located in the core slots 30 and 38, two slot interiors of the second third conductor 450 of the third conductor group are located in the core slots 31 and 39, that is, the pitch between the two slot interiors of the third conductor 450 is the short pitch 8, so that it can be seen that the two slot interiors of the three third conductors 450 of the third conductor group are respectively located in the three core slots adjacent to each other in the circumferential direction of the stator core.

As shown in fig. 13, in the eleventh embodiment, each phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2Q third conductor sets, Q is equal to 1 in the present embodiment, that is, two identical third conductor sets are included, and 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 layers, 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 10; specifically, the pitch of the connection between the first connection weld end of one weld end of a first conductor 150 or a second large conductor 600-1A or a second small conductor 600-1B located in the same radial fourth layer of the stator core and the second connection weld end of one weld end of a second large conductor 600-1A or a second small conductor 600-1B or a fifth large conductor 400-2A or a fifth small conductor 400-2B located in the same radial third layer of the stator core is 10, and the first connection weld end of the other weld end of one weld end of a second large conductor 600-1A or a second small conductor 600-1B or a fifth large conductor 400-2A or a fifth small conductor 400-2B located in the same radial second layer of the stator core and the second large conductor 600-1A or the second small conductor 600A located in the same radial adjacent first layer of the stator core are respectively connected with the second connection weld end of one weld end of a second large conductor 600-1A or the second small conductor 600-1B located in the same radial adjacent first layer of the stator core 1B or a fourth large conductor 100-1A or a fourth small conductor 100-1B, and the pitch of the connection of the second connection welding ends of one welding end is long pitch 10; the two groove interiors of the first second large conductor of the second conductor group are respectively positioned in the core grooves 2 and 11, the two groove interiors of the second large conductor of the second conductor group are respectively positioned in the core grooves 3 and 12, the two groove interiors of the second small conductor of the second conductor group are respectively positioned in the core grooves 4 and 10, namely, the pitch between the two groove interiors of the two second large conductors of the second conductor group is a whole pitch 9, the pitch between the two groove interiors of the second small conductor of the second conductor group is a short pitch 6, the third conductor group comprises a fifth large conductor 400-2A and two fifth small conductors 400-2B, the two groove interiors of the fifth large conductor 400-2A of the third conductor group are respectively positioned in the core grooves 20 and 30, the two groove interiors of the first fifth small conductor 400-2B of the third conductor group are respectively positioned in the core grooves 21 and 28, and the two groove interiors of the second fifth small conductor 400-2B of the third conductor group are respectively positioned in the core grooves 22, 29, that is, the pitch between the two slot interiors of one fifth large conductor 400-2A of the third conductor group is a long pitch 10, and the pitch between the two slot interiors of two fifth small conductors 400-2B of the third conductor group is a short pitch 7, so it can be seen that the two slot interiors of the first fifth small conductor 400-2B of the third conductor group and the two slot interiors of the second fifth small conductor 400-2B are sequentially located in two core slots circumferentially adjacent to the stator core, and one fifth large conductor 400-1A surrounds the slot interiors of the two fifth small conductors 400-1B.

As shown in fig. 7, 8, 14, 10, and 11, in a twelfth embodiment, the second conductor set in the twelfth embodiment is different from the second conductor set in the fourth to sixth embodiments and the eleventh embodiment, the second conductor set in the twelfth embodiment includes one second large conductor 600-2A and two second small conductors 600-2B, two groove interiors of the first second large conductor of the second conductor set are located in the core grooves 2 and 12, respectively, two groove interiors of the second large conductor of the second conductor set are located in the grooves 3 and 10, respectively, two groove interiors of the second small conductor of the second conductor set are located in the grooves 4 and 11, respectively, that is, a pitch between two groove interiors of the one second large conductor of the second conductor set is a long pitch 10, and a pitch between two groove interiors of the two second small conductors of the second conductor set is a short pitch 7.

Referring to fig. 12, in the seventh embodiment, the two groove interiors of the first conductor group are located in the core grooves 28, 37, respectively, and it can be seen that the pitch between the two groove interiors of the first conductor is a full pitch 9, (the pitch 9 is a full pitch in this embodiment) the two groove interiors of the fourth large conductor of the fourth conductor group are located in the

core grooves

20, 30, respectively, and it can be seen that the pitch between the two groove interiors of the fourth large conductor 100-2A is a long pitch 10, and the two groove interiors of the fourth small conductor of the fourth conductor group are located in the core grooves 22, 29, respectively, and it can be seen that the pitch between the two groove interiors of the fourth small conductor 100-2B is a short pitch 7;

with reference to fig. 12, the difference between the seventh embodiment and the first to sixth embodiments is only that the number and the pitch of the fourth large conductors and the fourth small conductors included in the fourth conductor group are different, and further description is not repeated herein.

Further, in embodiment one to embodiment three, the long pitch of two second large conductors of the second conductor group is 11, and the short pitch of one second small conductor of the second conductor group is 8; in the ninth embodiment, the long pitch of one second large conductor of the second conductor group is 12, and the entire pitch of two second small conductors of the second conductor group is 9; in example four to example six, the full pitch of the two second large conductors of the second conductor set is 9, and the short pitch of the one second small conductor of the second conductor set is 6; in embodiment twelve, the long pitch of one second large conductor of the second conductor group is 10 and the short pitch of two second small conductors of the second conductor group is 7.

Further, in the first embodiment and the third embodiment, the three conductors of each third conductor group of the phase winding are the same third conductor, and the long pitch of the third conductor is 10; in the second and third embodiments, the long pitch of the two fifth large conductors of the third conductor group is 11, and the short pitch of the one fifth small conductor of the third conductor group is 8; in the eighth embodiment, the long pitch of one fifth large conductor of the third conductor group is 12, and the entire pitch of two fifth small conductors of the third conductor group is 9.

Further, in the fourth embodiment and the sixth embodiment, the three conductors of each third conductor group of the phase winding are the same third conductor, and the short pitch of the third conductor is 8; in the fifth and sixth embodiments, the full pitch of the two fifth large conductors of the third conductor group is 9, and the short pitch of the one fifth small conductor of the third conductor group is 6; in embodiment eleven, the long pitch of one fifth large conductor of the third conductor group is 10, and the short pitch of two fifth small conductors of the third conductor group is 7.

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 connected in series along the circumferential direction of the stator core by a plurality of conductor groups;

wherein the first conductor set includes: the first conductors comprise two in-slot parts positioned in different iron core slots, wire inserting ends positioned outside the iron core slots and two welding ends positioned outside the iron core slots and having the same extending direction, and the two in-slot parts of each first conductor of the first conductor group are positioned in the radially outermost layer of the stator core;

the second conductor set includes: two second large conductors and one second small conductor, or, the second conductor set includes: a second large conductor and two second small conductors; each conductor of the second 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, the two slot interiors 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;

a pitch between two groove interiors of the two second large conductors of the second conductor group is a long pitch, a pitch between two groove interiors of the one second small conductor of the second conductor group is a short pitch,

or the pitch between the two groove interiors of the one second large conductor of the second conductor group is a long pitch, the pitch between the two groove interiors of the two second small conductors of the second conductor group is a full pitch,

or the pitch between the two groove interiors of the one second large conductor of the second conductor group is a long pitch and the pitch between the two groove interiors of the two second small conductors of the second conductor group is a short pitch;

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: two fourth large conductors and one fourth small conductor, or, the fourth conductor set includes: a fourth large conductor and two fourth small conductors; each conductor of the fourth conductor group comprises two in-slot portions located in different iron core slots, a wire inserting end located outside the iron core slots and two welding ends located outside the iron core slots and extending in the same direction, and the two in-slot portions of each conductor of the fourth conductor group are located 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 1, wherein the phase windings have a plurality of first connection weld ends and a plurality of second connection weld ends connected together, the weld ends located in the same radially adjacent M-1 layers of the stator core being the first connection weld ends, the weld ends located in the same radially adjacent M layers of the stator core being the second connection weld ends, M being an even number.

4. The motor stator according to claim 3, wherein when a pitch between two groove interiors of the two second large conductors of the second conductor group is a long pitch and a pitch between two groove interiors of the one second small conductor of the second conductor group is a short pitch; the three 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 three conductors of the third conductor group are two fifth large conductors and one fifth small conductor, the pitch between the two groove interiors of the two fifth large conductors of the third conductor group is a long pitch, the pitch between the two groove interiors of the one fifth small conductor of the third conductor group is a short pitch, and/or the three conductors of the third conductor group are one fifth large conductor and two fifth small conductors, the pitch between the two groove interiors of the one fifth large conductor of the third conductor group is a long pitch, and the pitch between the two groove interiors of the two fifth small conductors of the third conductor group 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 a pitch between two groove interiors of said one second large conductor of said second conductor group is a long pitch and a pitch between two groove interiors of said two second small conductors of said second conductor group is a full pitch; the three 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 three conductors of the third conductor group are two fifth large conductors and one fifth small conductor, the pitch between the two groove interiors of the two fifth large conductors of the third conductor group is a long pitch, the pitch between the two groove interiors of the one fifth small conductor of the third conductor group is a short pitch, and/or the three conductors of the third conductor group are one fifth large conductor and two fifth small conductors, the pitch between the two groove interiors of the one fifth large conductor of the third conductor group is a long pitch, and the pitch between the two groove interiors of the two fifth small conductors of the third conductor group 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.

6. The electric machine stator according to claim 3, wherein when the pitch between the two groove interiors of the two second large conductors of the second conductor group is a full pitch and the pitch between the two groove interiors of the one second small conductor of the second conductor group is a short pitch; the three conductors of the third conductor group are the same third conductor, the pitch between the two groove interiors of the third conductor is a short pitch, and/or the three conductors of the third conductor group are two fifth large conductors and one fifth small conductor, the pitch between the two groove interiors of the two fifth large conductors of the third conductor group is a full pitch, the pitch between the two groove interiors of the one fifth small conductor of the third conductor group is a short pitch, and/or the three conductors of the third conductor group are one fifth large conductor and two fifth small conductors, the pitch between the two groove interiors of the one fifth large conductor of the third conductor group is a long pitch, and the pitch between the two groove interiors of the two fifth small conductors of the third conductor group 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.

7. The motor stator according to claim 3, wherein when a pitch between two groove interiors of said one second large conductor of said second conductor group is a long pitch and a pitch between two groove interiors of said two second small conductors of said second conductor group is a short pitch; the three conductors of the third conductor group are the same third conductor, the pitch between the two groove interiors of the third conductor is a short pitch, and/or the three conductors of the third conductor group are two fifth large conductors and one fifth small conductor, the pitch between the two groove interiors of the two fifth large conductors of the third conductor group is a full pitch, the pitch between the two groove interiors of the one fifth small conductor of the third conductor group is a short pitch, and/or the three conductors of the third conductor group are one fifth large conductor and two fifth small conductors, the pitch between the two groove interiors of the one fifth large conductor of the third conductor group is a long pitch, and the pitch between the two groove interiors of the two fifth small conductors of the third conductor group 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 claim 1, wherein the long pitch of the two second large conductors of the second conductor set is 11 and the short pitch of the one second small conductor of the second conductor set is 8;

or the long pitch of the one second large conductor of the second conductor set is 12 and the full pitch of the two second small conductors of the second conductor set is 9;

or the full pitch of the two second large conductors of the second conductor set is 9 and the short pitch of the one second small conductor of the second conductor set is 6;

or the long pitch of the one second large conductor of the second conductor set is 10 and the short pitch of the two second small conductors of the second conductor set is 7.

9. An electric machine stator according to any of claims 4 to 5, characterized in that the three conductors of the third conductor set are identical third conductors having a long pitch of 10; or, the long pitch of the two fifth large conductors of the third conductor group is 11, and the short pitch of the one fifth small conductor of the third conductor group is 8; or, the long pitch of the one fifth large conductor of the third conductor group is 12, and the entire pitch of the two fifth small conductors of the third conductor group is 9.

10. An electric machine stator according to any of claims 6 to 7, characterized in that the three conductors of the third conductor set are identical third conductors having a short pitch of 8; or the full pitch of the two fifth largest conductors of the third conductor set is 9 and the short pitch of the one fifth smallest conductor of the third conductor set is 6; or the long pitch of the one fifth large conductor of the third conductor set is 10 and the short pitch of the two fifth small conductors of the third conductor set is 7.

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