CN214124962U

CN214124962U - Motor stator and motor

Info

Publication number: CN214124962U
Application number: CN202023026141.0U
Authority: CN
Inventors: 李久富
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: 2021-09-03
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;

the method is characterized in that: each phase winding is formed by connecting a plurality of conductor groups in series along the circumferential direction of the stator core;

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: the stator core comprises three identical second conductors, wherein each second 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 opposite in extending direction, the two slot interiors 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 core, and N is an odd number; the pitch between the two groove interiors of the second conductors of the second conductor group is a long pitch, or the pitch between the two groove interiors of the second 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 the radially adjacent N +1 layer and the N +2 layer of the stator iron core;

the fourth conductor set includes: two fourth large conductors and one fourth small conductor, or a fourth conductor set, 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 outside the iron core slots and two welding ends positioned outside the iron core slots 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; each of the weld ends of each of the conductors of the fourth conductor set extends in a direction opposite to that of each of the weld ends of each of the conductors of the first conductor set.

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

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

Further, when the pitch between the two groove interiors of the second conductors of the second conductor group is a long pitch; the three conductors of each third conductor set are identical third conductors having a long pitch between the inside of two slots and a short pitch for the sum of the span of the first connection pad and the span of the second connection pad.

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

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

Further, when the pitch between the two groove interiors of the second conductors of the second conductor group is a long pitch; three conductors of a third conductor group of the phase winding are two fifth large conductors and a fifth small conductor, the pitch between the two groove interiors of the fifth large conductors is long pitch, and the pitch between the two groove interiors of the fifth small conductors is short pitch; the three conductors of the other third conductor group of the phase winding are third conductors whose pitch between the two slot interiors is a long pitch, and the sum of the span of the first connection weld and the span of the second connection weld is a short pitch.

Further, when the pitch between the two groove interiors of the second conductors of the second conductor group is a long pitch; the three conductors of a third conductor group of the phase winding are a fifth large conductor and two fifth small conductors, the pitch between the two groove interiors of the fifth large conductor is a long pitch, and the pitch between the two groove interiors of the fifth small conductor is a whole pitch; the three conductors of the other third conductor group of the phase winding are third conductors whose pitch between the two slot interiors is a long pitch, and the sum of the span of the first connection weld and the span of the second connection weld is a short pitch.

Further, when the pitch between the two groove interiors of the second conductors of the second conductor group is a short pitch; the three conductors of each third conductor set are identical third conductors having a short pitch between the inside of the two slots and a long pitch for the sum of the span of the first connection pad and the span of the second connection pad.

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

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

Further, when the pitch between the two groove interiors of the second conductors of the second conductor group is a short pitch; the three conductors of a third conductor group of the phase winding are two fifth large conductors and a fifth small conductor, the pitch between the two groove interiors of the fifth large conductors is a full pitch, and the pitch between the two groove interiors of the fifth small conductors is a short pitch; the three conductors of the other third conductor group of the phase winding are third conductors whose pitch between the two slot interiors is a short pitch, and the sum of the span of the first connection weld and the span of the second connection weld is a long pitch.

Further, when the pitch between the two groove interiors of the second conductors of the second conductor group is a short pitch; the three conductors of a third conductor group of the phase winding are a fifth large conductor and two fifth small conductors, the pitch between the two groove interiors of the fifth large conductor is a long pitch, and the pitch between the two groove interiors of the fifth small conductor is a whole pitch; the three conductors of the other third conductor group of the phase winding are third conductors whose pitch between the two slot interiors is a short pitch, and the sum of the span of the first connection weld and the span of the second connection weld is a long pitch.

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 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; the method is characterized in that: each phase winding is formed by connecting a plurality of conductor groups in series along the circumferential direction of the stator core; 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: the stator core comprises three identical second conductors, wherein each second 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 opposite in extending direction, the two slot interiors 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 core, and N is an odd number; the pitch between the two groove interiors of the second conductors of the second conductor group is a long pitch, or the pitch between the two groove interiors of the second 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 the radially adjacent N +1 layer and the N +2 layer of the stator iron core; the fourth conductor set includes: two fourth large conductors and one fourth small conductor, or a fourth conductor set, 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 outside the iron core slots and two welding ends positioned outside the iron core slots 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; each of the weld ends of each of the conductors of the fourth conductor set extends in a direction opposite to that of each of the weld ends of each of the conductors of the first conductor set. The above-mentioned technical scheme of adoption of this application, the kind of the conductor of adoption is few, and the mode of arranging is simple, can cancel busbar and busbar for the welding tip distortion direction that the inslot that is located stator core inslot radial same layer extends is unanimous with distortion groove pitch, realizes that lead terminal and neutral point between each phase winding set up in any one layer of same radial arbitrary groove, reduces the preparation technology complexity, reduction in production cost, improvement machining efficiency.

Drawings

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

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

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

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

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

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

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

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

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

fig. 9 is a schematic structural diagram of a 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 second embodiment of the present invention;

fig. 11 is a schematic structural diagram of a third conductor set according to a first 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 diagram of a planar expansion of a plug end of a middle phase winding according to an embodiment of the present invention;

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

fig. 16 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. 17 is a schematic diagram of a plane development of a welding end of a phase winding according to one embodiment to three embodiments of the present invention;

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

fig. 19 is a schematic diagram of a plane expansion of the plug end of a five-phase winding according to 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 six embodiments of the present invention;

fig. 21 is a schematic expanded view of a welding end plane of a phase winding according to the fourth embodiment to the sixth embodiment of the present invention;

Detailed Description

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

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

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, 14 to 21, 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. The motor stator of an embodiment is a motor stator in a hairpin motor.

Referring to fig. 1 to 21, in the present embodiment, a stator winding 10, the stator winding 10 being mounted on a stator core 20, i.e., 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 the number of slots per phase per pole is equal to 3; three slots 21 are provided for each magnetic pole of the rotor, the number of slots per pole per phase being 3 in the present embodiment, the rotor has six magnetic poles and is such that the number of slots 21 provided in the stator core 20 is equal to 54 (i.e., 3X6X3) for each phase of the three-phase stator winding 10, and in the present embodiment, 1 first conductor group, 8 second conductor groups, 2 third conductor groups, 1 fourth conductor group are included in each phase winding (U-phase winding, V-phase winding, W-phase winding) in series;

further, in the present embodiment, the stator core 20 is formed by stacking a plurality of annular magnetic steel plates to form the stator core axial direction both end faces 25, 26 of the stator core 20 by defining one tooth portion 22 by two adjacent slots 21, and other conventional metal plates may be used instead of the magnetic steel plates.

As shown in fig. 7 and 14 to 21, in the first to eighth embodiments, the first conductor set includes: three identical first conductors 150, each first conductor 150 includes two slot interiors 301 located inside the same radial different core slots of the stator core, a wire insertion end 302 located outside the core slot 21, the wire insertion end 302 located outside the 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 leftward), 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 are located in 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 set are located in the core slots 28, 37, the two slot interiors of the second first conductor 150 of the first conductor set are located in the core slots 29, 38, and the two slot interiors of the third first conductor 150 of the first conductor set are located in the core slots 30, 39, so that it can be seen that the two slot interiors of the three first conductors 150 of the first conductor set are respectively located in three circumferentially adjacent core slots of the stator core in sequence.

As shown in fig. 9, 14, 15, 16, and 17, in the first to third embodiments, the second conductor set includes: three identical second conductors 350, each second conductor 350 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, two welding ends 303 located outside the core slot and extending in opposite directions (the extending directions of the two welding ends are opposite), the two welding ends 303 located outside the core slot 21 and axially extending 26 are respectively connected to the two slot interiors 301 of the conductor in the same layer, the two slot interiors of the second conductors of one second conductor group are located on the 1 st layer and the 2 nd layer which are radially adjacent to the stator core, and the two slot interiors of the second conductors of the other second conductor group are located on the 3 rd layer and the 4 th layer which are radially adjacent to the stator core. The two slot interiors of the first second conductor 350 of the second conductor group are located in the core slots 2 and 10, the two slot interiors of the second conductor 350 of the second conductor group are located in the core slots 3 and 11, and the two slot interiors of the third second conductor 350 of the second conductor group are located in the core slots 4 and 12, so that it can be seen that the pitch between the two slot interiors of the three second conductors 350 of the second conductor group is a short pitch (the short pitch is 8 in the present embodiment), and the two slot interiors of the three second conductors 350 of the second conductor group are respectively located in three core slots adjacent to each other in the circumferential direction of the stator core in sequence.

As shown in fig. 9, 18, 19, 20, and 21, in the fourth to eleventh embodiments, the second conductor group includes: three identical second conductors 350, each second conductor 350 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, two welding ends 303 located outside the core slot and extending in opposite directions (the extending directions of the two welding ends are opposite), the two welding ends 303 located outside the core slot 21 and extending in the axial direction and 26 respectively connected to the two slot interiors 301 of the conductor in the same layer, the two slot interiors of one second conductor 350 of different second conductor groups are located on the 1 st layer and the 2 nd layer which are radially adjacent to the stator core, and the two slot interiors of the second conductor 350 of the other second conductor group are located on the 3 rd layer and the 4 th layer which are radially adjacent to the stator core. The two slot interiors of the first second conductor 300 of the second conductor group are located in the core slots 1 and 11, the two slot interiors of the second conductor 350 of the second conductor group are located in the core slots 2 and 12, and the two slot interiors of the third second conductor 350 of the second conductor group are located in the core slots 3 and 13, so that it can be seen that the pitch between the two slot interiors of the three second conductors 350 of the second conductor group is a long pitch (the long pitch is 10 in the present embodiment), and the two slot interiors of the three second conductors 350 of the second conductor group are respectively located in three core slots adjacent to each other in the circumferential direction of the stator core in sequence.

As shown in fig. 1 to 21, in the first to eleventh embodiments, the third conductor set includes: three conductors 250(200-1A, 200-1B, 200-2A, 200-2B), wherein each conductor 250(200-1A, 200-1B, 200-2A, 200-2B) 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 each conductor of a 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. 8 and 14 to 21, in the first to sixth 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 20 and 30, the two slot interiors of the second fourth large conductor 100-1A of the fourth conductor set are located in the core slots 21 and 31, and the two slot interiors of the fourth small conductor 100-1B of the fourth conductor set are located in the core slots 22 and 29, 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 sequentially located in the two circumferentially adjacent core slots of the stator core, and the slot interiors of the two fourth large conductors 100A surround the two slot interiors of the fourth small conductor 100B. According to the technical scheme of the motor stator in the embodiment, the 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, the terminal and the neutral point of each phase of winding can be arranged on any two layers of radial adjacent iron core slots, 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 the seventh embodiment, 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 in the first layer (the fourth layer located on the radially outermost layer) in 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 20 and 31, the two slot interiors of the first fourth small conductor 100-2B of the fourth conductor set are located in the core slots 21 and 29, and the two slot interiors of the fourth small conductor 100-2B of the fourth conductor set are located in the core slots 22 and 30, so that 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 sequentially located in 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 100-2B. According to the technical scheme of the motor stator in the application embodiment, the bus bar connected in series among the windings of all phases in the related technology is omitted, the first conductor group, the second conductor group, the third conductor group and the fourth conductor group of all phases can be directly connected, the winding terminal and the neutral point of each phase can be arranged in any core slot and any two layers adjacent in the radial direction, the complexity of the manufacturing process is reduced, the production cost is reduced, the material cost is reduced, and the processing efficiency is improved. Therefore, the technical scheme of the embodiment of the application effectively solves the problems of complex manufacturing process, high production cost and low processing efficiency of the hairpin winding in the related technology.

As shown in fig. 7, 8, 9 and 10, in the first to sixth embodiments, the two slots of the first conductor set are respectively located in the core slots 28 and 37, it can be seen that the pitch between the two slot interiors of the first conductor is a full pitch of 9, (the full pitch being 9 in this embodiment) the two slot interiors of the first fourth large conductor of the fourth conductor set are located in the core slots 20, 30, respectively, the two slot interiors of the second fourth large conductor of the fourth conductor set are located in the core slots 21, 31, respectively, it can be seen that the pitch between the two slot interiors of the two fourth large conductors 100-1A of the fourth conductor set is the long pitch 10, the two slot interiors of one fourth small conductor of the fourth conductor set are located in the core slots 22, 29, as can be seen from this, the pitch between the two groove interiors of one fourth small conductor 100B of the fourth conductor group is the short pitch 7; as shown in fig. 7, 9, 11, and 12, in the seventh embodiment, the two groove interiors of the first conductor group are located in the core grooves 28 and 37, respectively, and thus it can be seen that the pitch between the two groove interiors of the first conductor is the full pitch 9 (the full pitch is 9 in the present embodiment), and the two groove interiors of the one fourth large conductor of the fourth conductor group are located in the core grooves 20 and 31, respectively, and thus it can be seen that the pitch between the two groove interiors of the one fourth large conductor 100A of the fourth conductor group is the long pitch 11, and the two groove interiors of the first fourth small conductor of the fourth conductor group are located in the core grooves 21 and 29, respectively, and the two groove interiors of the second fourth small conductor of the fourth conductor group are located in the core grooves 22 and 30, respectively, and thus it can be seen that the pitch between the two groove interiors of the two fourth small conductors 100B of the fourth conductor group is the short pitch 8; that is, the pitch between the two groove interiors of the first conductor group is the full pitch 9, the pitch between the two groove interiors of the fourth large conductor of the fourth conductor group is the long pitch 10(11), and the pitch between the two groove interiors of the fourth small conductor of the fourth conductor group is the short pitch 7 (8).

With reference to fig. 14 and 17, 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-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 conductor 350 located in the same radial fourth layer of the stator core and the second connection welding end of one second conductor 350 or one third conductor 250 located in the same radial adjacent third layer of the stator core is long pitch 10, and the pitch of the connection between the first connection welding end of the other welding end of one second conductor 350 or one third conductor 250 located in the same radial second layer of the stator core and the second connection welding end of one second conductor 350 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 is long pitch 10; the two in-slot portions of the second conductor group are located in the core slots 2 and 10, respectively, i.e. the pitch between the two in-slot portions of the second conductor is a short pitch 8, the three conductors of the third conductor group are identical third conductors 250, the two in-slot portions of the first third conductor 250 of the third conductor group are located in the core slots 20 and 28, the two in-slot portions of the second third conductor 250 of the third conductor group are located in the core slots 21 and 29, and the two in-slot portions of the third conductor 250 of the third conductor group are located in the core slots 22 and 30, i.e. the pitch between the two in-slot portions of the third conductor 250 is a short pitch 8, whereby it can be seen that the two in-slot portions of the three third conductors 250 of the third conductor group are located in turn in three circumferentially adjacent core slots of the stator core, respectively.

With reference to fig. 15 and 17, 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-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 first conductor 150 or one second conductor 350 located on the same radial fourth layer of the stator core and the second connection weld end of one second conductor 350 or one fifth large conductor 200-1A or one fifth small conductor 200-1B located on the same radial adjacent third layer of the stator core is long pitch 10, the pitch of the connection between the first connection welding end of the other welding end of one second conductor 350 or one fifth large conductor 200-1A or one fifth small conductor 200-1B positioned on the same radial second layer of the stator core and the second connection welding end of one second conductor 350 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 is long pitch 10; the two interiors of the second slots of the second conductor group are respectively located in the core slots 2 and 10, i.e., the pitch between the interiors of the two slots of the second conductor is a short pitch of 8, the three conductors of the third conductor group are two fifth large conductors 200-1A and one fifth small conductor 200-1B, the two interiors of the two slots of the first fifth large conductor 200-1A of the third conductor group are respectively located in the core slots 20 and 29, the two interiors of the two slots of the second fifth large conductor 200-1A of the third conductor group are respectively located in the core slots 21 and 30, the two interiors of the two slots of the fifth small conductor 200-1B of the third conductor group are respectively located in the core slots 22 and 28, i.e., the pitch between the two interiors of the two slots of the two fifth large conductors 200-1A of the third conductor group is a full pitch of 9, and the pitch between the two interiors of the two slots of one fifth small conductor 200-1B of the third conductor group is a short pitch of 6, it can be seen that the two slot interiors of the first fifth large conductor 200-1A and the two slot interiors of the second fifth large conductor 200-1A of the third conductor group are sequentially located in two core slots circumferentially adjacent to the stator core, and the slot interiors of the two fifth large conductors 200-1A surround the two slot interiors of the one fifth small conductor 200-1B.

With reference to fig. 13, 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 conductor 350 located on the same radial fourth layer of the stator core with the second connecting weld end of one second conductor 350 or one fifth large conductor 200-2A or one fifth small conductor 200-2B located on the same radial adjacent third layer of the stator core is long pitch 10, the pitch of the connection between the first connection welding end of the other welding end of one second conductor 350 or one fifth large conductor 200-2A or one fifth small conductor 200-2B positioned on the same radial second layer of the stator core and the second connection welding end of one second conductor 350 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 is long pitch 10; the two interiors of the second conductors of the second conductor group are respectively located in the core slots 2 and 10, i.e., the pitch between the interiors of the two slots of the second conductors is a short pitch of 8, the three conductors of the third conductor group are respectively one fifth large conductor 200-2A and two fifth small conductors 200-2B, the two interiors of the two slots of one fifth large conductor 200-2A of the third conductor group are respectively located in the core slots 20 and 30, the two interiors of the two slots of the first fifth small conductor 200-2A of the third conductor group are respectively located in the core slots 21 and 28, the two interiors of the two fifth small conductors 200-2B of the third conductor group are respectively located in the core slots 22 and 29, i.e., the pitch between the two interiors of the two slots of one fifth large conductor 200-2A of the third conductor group is a long pitch of 10, and the pitch between the two interiors of two fifth small conductors 200-2B of the third conductor group is a short pitch of 7, it can be seen that two slot interiors of the first fifth small conductor 200-2B of the third conductor group and two slot interiors of the second fifth small conductor 200-2B are sequentially located in two core slots circumferentially adjacent to the stator core, and the slot interior of one fifth large conductor 200-2A surrounds the two fifth small conductors 200-2B.

With reference to fig. 16 and 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, 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 first conductor 150 or one second conductor 350 located on the same radial fourth layer of the stator core and the second connection weld end of one second conductor 350 or one third conductor 250 or one fifth large conductor 200-1A or one fifth small conductor 200-1B located on the same radial adjacent third layer of the stator core is long pitch 10, the pitch of the connection between the first connection welding end of the other welding end of one second conductor 350 or one third conductor 250 or one fifth large conductor 200-1A or one fifth small conductor 200-1B positioned on the same radial second layer of the stator core and the second connection welding end of one second conductor 350 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 is long pitch 10; the two interiors of the second conductors of the second conductor group are respectively located in the core slots 2, 10, i.e., the pitch between the interiors of the two slots of the second conductors is a short pitch 8, the three conductors of the first third conductor group are two fifth large conductors 200A and one fifth small conductor 200-1B, the two interiors of the two slots of the first fifth large conductor 200-1A of the third conductor group are respectively located in the core slots 20, 29, the two interiors of the two slots of the second fifth large conductor 200-1A of the third conductor group are respectively located in the core slots 21, 30, the two interiors of the two slots of the fifth small conductor 200-1B of the third conductor group are respectively located in the core slots 22, 28, i.e., the pitch between the two interiors of the two slots of the two fifth large conductors 200-1A of the third conductor group is a full pitch 9, the pitch between the two interiors of the two slots of one fifth small conductor 200-1B of the third conductor group is a short pitch 6, the two slot interiors of the first fifth large conductor 200-1A and the two slot interiors of the second fifth large conductor 200-1A of the third conductor group are sequentially positioned in two circumferentially adjacent iron core slots of the stator iron core, and the slot interiors of the two fifth large conductors 200-1A surround the two slot interiors of the fifth small conductor 200-1B of the third conductor group; the three conductors of the second third conductor group are the same third conductor 250, the two slot interiors of the first third conductor 250 of the third conductor group are located in the core slots 29 and 37, the two slot interiors of the second third conductor 250 of the third conductor group are located in the core slots 30 and 38, and the two slot interiors of the third conductor 250 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 250 is the short pitch 8, so that it can be seen that the two slot interiors of the three third conductors 250 of the third conductor group are respectively located in three circumferentially adjacent core slots of the stator core in sequence.

Referring to fig. 13, in the ninth embodiment, the 3 conductors of the third conductor group are one fifth large conductor 200-2A and two fifth small conductors 200-2B, the two slot interiors of the fifth large conductor 200-2A of the third conductor group are located in the

core slots

20 and 30, the two slot interiors of the first fifth small conductor 200-2B of the third conductor group are located in the core slots 21 and 28, the two slot interiors of the second fifth small conductor 200-2B of the third conductor group are located in the core slots 22 and 29, the pitch between the two slot interiors of the one fifth large conductor 200-2A of the third conductor group is a long pitch 10, the pitch between the two slot interiors of the two fifth small conductors 200-2B of the third conductor group is a short pitch 7, and the ninth embodiment is different from the third embodiment only in that the 3 conductors of the third conductor group are one fifth large conductor 200-2A and two fifth small conductors 200-2B, the rest of the structure is the same as that of the third embodiment, and further description is omitted here.

As shown in fig. 18 and 21, 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 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 the connection between the first connection welding end of one first conductor 150 or one second conductor 350 located in the same radial fourth layer of the stator core and the second connection welding end of one second conductor 350 or one third conductor 250 located in the same radial adjacent third layer of the stator core is short pitch 8, and the pitch of the connection between the first connection welding end of the other welding end of one second conductor 350 or one third conductor 250 located in the same radial second layer of the stator core and the second connection welding end of one second conductor 350 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 is short pitch 8; the two slot interiors of the second conductor 350 of the second conductor group are respectively located in the core slots 1 and 11, i.e. the pitch between the two slot interiors of the second conductor is long pitch 10, the three conductors of the third conductor group are the same third conductor 450, the two slot interiors of the first third conductor 450 of the third conductor group are located in the core slots 19 and 29, the two slot interiors of the second third conductor 450 of the third conductor group are located in the core slots 20 and 30, the two slot interiors of the third conductor 450 of the third conductor group are located in the core slots 21 and 31, i.e. the pitch between the two slot interiors of the third conductor 250 is long pitch 10, and thus it can be seen that the two slot interiors of the three third conductors 250 of the third conductor group are respectively located in three circumferentially adjacent core slots of the stator core in sequence.

As shown in fig. 19 and 21, 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 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 conductor 350 located on the same radial fourth layer of the stator core with the second connecting weld end of one second conductor 350 or one fifth large conductor 200-1A or one fifth small conductor 200-1B located on the same radial adjacent third layer of the stator core is the short pitch 8, the pitch of the connection between the first connecting welding end of the other welding end of one second conductor 350 or one fifth large conductor 200-1A or one fifth small conductor 200-1B positioned on the same radial second layer of the stator core and the second connecting welding end of one second conductor 350 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 is the short pitch 8; the two interiors of the second conductors 350 of the second conductor group are respectively located in the core slots 1, 11, i.e., the pitch between the two interiors of the second conductors is long pitch 10, the third conductor group includes two fifth large conductors 200-1A and one fifth small conductor 200-1B, the first fifth large conductor 200-1A of the third conductor group is respectively located in the core slots 19, 30, the second fifth large conductor 200-1A of the third conductor group is respectively located in the core slots 20, 31, the two interiors of the five small conductors 200-1B of the third conductor group is respectively located in the core slots 21, 29, i.e., the pitch between the interiors of the two slots of the two fifth large conductors 200-1A of the third conductor group is long pitch 11, the pitch between the two interiors of the two slots of one fifth small conductor 200-1B of the third conductor group is short pitch 8, it can be seen that the two slot interiors of the first fifth large conductor 200-1A and the two slot interiors of the second fifth large conductor 200-1A of the third conductor group are sequentially located in two core slots circumferentially adjacent to the stator core, and the slot interiors of the two fifth large conductors 200-1A surround the two slot interiors of the one fifth small conductor 200-1B.

Referring to fig. 13, in the tenth 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 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 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 conductor 350 located on the same radial fourth layer of the stator core with the second connecting weld end of one second conductor 350 or one fifth large conductor 200-2A or one fifth small conductor 200-2B located on the same radial adjacent third layer of the stator core is the short pitch 8, the pitch of the connection between the first connection welding end of the other welding end of one second conductor 350 or one fifth large conductor 200-2A or one fifth small conductor 200-2B positioned on the same radial second layer of the stator core and the second connection welding end of one second conductor 350 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 is the short pitch 8; the two groove interiors of the second conductor 350 of the second conductor group are respectively located in the core grooves 1, 11, i.e., the pitch between the two groove interiors of the second conductor 350 is long pitch 10, the two groove interiors of the fifth large conductor 200-2A and the two fifth small conductors 200-2B of the third conductor group are respectively located in the core grooves 19, 31, the two groove interiors of the first fifth small conductor 200-2B of the third conductor group are respectively located in the core grooves 20, 29, the two groove interiors of the second fifth small conductor 200-1B of the third conductor group is respectively located in the core grooves 21, 30, i.e., the pitch between the two groove interiors of the fifth large conductor 200-1A of the third conductor group is long pitch 12, the pitch between the two groove interiors of the two fifth small conductors 200-1B of the third conductor group is full pitch 9, the two slot interiors of the first fifth small conductor 200-1B and the two slot interiors of the second fifth small conductor 200-1B of the third conductor group are sequentially positioned in two core slots which are circumferentially adjacent to the stator core, and the two slot interiors of the fifth large conductor 200-1A of the third conductor group surround the two fifth small conductors 200-1A of the third conductor group.

With reference to fig. 20 and 21, in a 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 this 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 one second conductor 350 located on the same radial fourth layer of the stator core with the second connecting weld end of one second conductor 350 or one third conductor 250 or one fifth large conductor 200-1A or one fifth small conductor 200-1B located on the same radial adjacent third layer of the stator core is the short pitch 8, the pitch of the connection between the first connection welding end of the other welding end of one second conductor 350 or third conductor 250 or one fifth large conductor 200-1A or one fifth small conductor 200-1B positioned on the same radial second layer of the stator core and the second connection welding end of one second conductor 350 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 is the short pitch 8; the two groove interiors of the second conductor 350 of the second conductor group are respectively located in the core grooves 1 and 11, namely, the pitch between the two groove interiors of the second conductor 350 is long pitch 10, the two large fifth conductors 200-1A and 200-1B of the first and third conductor groups are respectively located in the core grooves 19 and 30, the two groove interiors of the second large fifth conductor 200-1A and 200-1B of the third conductor group are respectively located in the core grooves 21 and 29, namely, the pitch between the two groove interiors of the large fifth conductor 200-1A is long pitch 11, the pitch between the two groove interiors of the small fifth conductor 200-1B is short pitch 8, the two groove interiors of the first large fifth conductor 200-1A and the second large fifth conductor 200-1B of the third conductor group are respectively located in the core grooves 21 and 29, namely, the pitch between the two groove interiors of the large fifth conductor 200-1A is long pitch 11, the pitch between the two groove interiors of the small fifth conductor 200-1B is short pitch 8, and the two groove interiors of the first large fifth conductor 200-1A and the second large fifth conductor 200-1A of the third conductor group are respectively located in the core grooves 10 The insides of the two slots of the conductor 200-1A are sequentially positioned in two circumferentially adjacent iron core slots of the stator iron core, and the insides of the slots of the two fifth large conductors 200-1A surround the fifth small conductor 200-1B of the third conductor group; the three conductors of the second third conductor group are the same third conductor 250, the two slot interiors of the third conductor 250 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 conductor 450 is the long pitch 10, the two slot interiors of the first third conductor 250 of the third conductor group are located in the core slots 28 and 38, the two slot interiors of the second third conductor 250 of the third conductor group are located in the core slots 29 and 39, and the two slot interiors of the third conductor 250 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 250 of the third conductor group are respectively located in three circumferentially adjacent core slots of the stator core in sequence.

Referring to fig. 13, in the eleventh embodiment, the 3 conductors of the third conductor group are one fifth large conductor 200-2A and two fifth small conductors 200-2B, the two slot interiors of the fifth large conductor 200-2A of the third conductor group are located in the core slots 19, 31, the two slot interiors of the first fifth small conductor 200-2B of the third conductor group are located in the core slots 20, 29, the two slot interiors of the second fifth small conductor 200-2B of the third conductor group are located in the

core slots

21, 30, the pitch between the two slot interiors of the one fifth large conductor 200-2A of the third conductor group is the long pitch 12, the pitch between the two slot interiors of the two fifth small conductors 200-2B of the third conductor group is the full pitch 9, the eleventh embodiment differs from the sixth embodiment only in that the 3 conductors of the third conductor group are one fifth large conductor 200-2A and two fifth small conductors 200-2B, the rest of the structure is the same as that of the third embodiment, and further description is omitted here.

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:

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: the two slot interiors of each second conductor group are respectively positioned in N layers and N +1 layers which are adjacent to the stator core in the radial direction, wherein N is an odd number; a pitch between two groove interiors of the second conductors of the second conductor group is a long pitch, or a pitch between two groove interiors of the second 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 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 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 having the same extending direction, and the two in-slot parts of each conductor of the fourth conductor group are positioned in the radially innermost layer of the stator iron core; each weld end of each conductor of the fourth conductor set extends in a direction opposite to that of each weld end of each conductor of the first conductor set.

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

3. The electric machine stator of claim 2, wherein the phase windings have a plurality of first 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 slot interiors of the second conductors of the second conductor group is a long pitch; the three conductors of each of the third conductor groups are identical third conductors having a long pitch between two groove interiors, and the sum of the span of the first connection pad and the span of the second connection pad is a short pitch.

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

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

7. The motor stator according to claim 3, wherein when a pitch between two slot interiors of the second conductors of the second conductor group is a long pitch; the three conductors of one third conductor group of the phase winding are two fifth large conductors and one fifth small conductor, the pitch between the two groove interiors of the fifth large conductors is a long pitch, and the pitch between the two groove interiors of the fifth small conductors is a short pitch; the three conductors of the other of the third conductor groups of the phase winding are third conductors having a long pitch between two slot interiors, and the sum of the span of the first connection weld and the span of the second connection weld is a short pitch.

8. The motor stator according to claim 3, wherein when a pitch between two slot interiors of the second conductors of the second conductor group is a long pitch; the three conductors of one third conductor group of the phase winding are a fifth large conductor and two fifth small conductors, the pitch between the two groove interiors of the fifth large conductor is a long pitch, and the pitch between the two groove interiors of the fifth small conductor is a full pitch; the three conductors of the other of the third conductor groups of the phase winding are third conductors having a long pitch between two slot interiors, and the sum of the span of the first connection weld and the span of the second connection weld is a short pitch.

9. The motor stator according to claim 3, wherein when a pitch between two slot interiors of the second conductors of the second conductor group is a short pitch; the three conductors of each of the third conductor groups are identical third conductors having a short pitch between two groove interiors and a long pitch in the sum of the span of the first connection pad and the span of the second connection pad.

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

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

12. The motor stator according to claim 3, wherein when a pitch between two slot interiors of the second conductors of the second conductor group is a short pitch; the three conductors of one third conductor group of the phase winding are two fifth large conductors and one fifth small conductor, the pitch between the two groove interiors of the fifth large conductors is a full pitch, and the pitch between the two groove interiors of the fifth small conductors is a short pitch; the three conductors of the other of the third conductor groups of the phase winding are third conductors having a short pitch between two slot interiors and a long pitch in a sum of a span of the first connection weld and a span of the second connection weld.

13. The motor stator according to claim 3, wherein when a pitch between two slot interiors of the second conductors of the second conductor group is a short pitch; the three conductors of one third conductor group of the phase winding are a fifth large conductor and two fifth small conductors, the pitch between the two groove interiors of the fifth large conductor is a long pitch, and the pitch between the two groove interiors of the fifth small conductor is a full pitch; the three conductors of the other of the third conductor groups of the phase winding are third conductors having a short pitch between two slot interiors and a long pitch in a sum of a span of the first connection weld and a span of the second connection weld.

14. An electrical machine comprising an electrical machine stator according to any one of claims 1 to 13.