CN219322176U

CN219322176U - Flat wire motor stator and flat wire motor

Info

Publication number: CN219322176U
Application number: CN202320154616.9U
Authority: CN
Inventors: 郑艳双; 陈红伟
Original assignee: Borgwarner Powertrain Tianjin Co ltd
Current assignee: Borgwarner Powertrain Tianjin Co ltd
Priority date: 2023-02-07
Filing date: 2023-02-07
Publication date: 2023-07-07
Anticipated expiration: 2033-02-07

Abstract

The utility model provides a flat wire motor stator and a flat wire motor, wherein each phase winding comprises X branch windings, the X branch windings are radially nested along a stator core, each branch winding comprises Y sub-branch windings, and the X X Y sub-branch windings of each phase winding are not overlapped along the circumferential part of the stator core; each sub-branch winding comprises Z winding units, the Z winding units are positioned in N slots adjacent to each other in the circumferential direction of the stator core, and each winding unit is sequentially connected to the other radial side of the stator core by a plurality of conductors along one radial side of the stator core and then returns to one radial side of the stator core; the utility model provides a motor stator and a motor, which adopts a completely symmetrical structure on a magnetic circuit through a winding structure, eliminates the problem of circulation current generated by an asymmetrical structure, reduces torque fluctuation and noise, adopts a single conductor, simplifies manufacturing procedures, reduces production cost and improves processing efficiency.

Description

Flat wire motor stator and flat wire motor

Technical Field

The utility model relates to the field of motors, in particular to a flat wire motor stator and a flat wire motor.

Background

In the prior art, a stator winding comprises a plurality of types of conductors, and coils of the plurality of types of conductors penetrate into slots 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. The hairpin coils used in the prior art are more in variety, complex in manufacturing procedure, high in production cost and low in processing efficiency.

Disclosure of Invention

The utility model provides a motor stator and a motor, which adopts a completely symmetrical structure on a magnetic circuit through a winding structure, so that the problem of loop current generated by an asymmetrical structure is solved, torque fluctuation is reduced, noise is reduced, a single conductor is adopted, the manufacturing process is simplified, the production cost is reduced, and the processing efficiency is improved.

In order to achieve the above object, according to one aspect of the present utility model, there is provided a flat wire motor stator comprising:

a stator core having a plurality of slots formed in a radial inner surface thereof and spaced apart in a circumferential direction of the stator core;

and

A stator winding including a plurality of phase windings mounted on a stator core,

each phase winding comprises X branch windings, the X branch windings are nested along the radial direction of the stator core, each branch winding comprises Y sub-branch windings, and the X X Y sub-branch windings of each phase winding are not overlapped along the circumferential direction of the stator core;

Each sub-branch winding comprises Z winding units which are positioned in N slots adjacent to the stator core in the circumferential direction,

each winding unit is sequentially connected to the other radial side of the stator core by a plurality of conductors along the radial side of the stator core and then returns to the radial side of the stator core, wherein X is 2 or 4, Y is 1 or 2, Z is 3 and N is 3.

Further, after each winding unit is from a plurality of conductors to the other side of the radial direction of the stator core along the circumferential direction A of the stator core, from the other side of the radial direction of the stator core to the one side of the radial direction of the stator core along the circumferential direction B of the stator core, the plurality of conductors sequentially connected along the circumferential direction A of the stator core and the plurality of conductors sequentially connected along the circumferential direction B of the stator core are positioned in two adjacent layers of the radial direction of the stator core, and A and B are opposite.

Further, the Z winding units of each sub-branch winding are sequentially connected in the same area of the stator core, and each sub-branch winding is not fully wound one circle along the circumferential direction of the stator core.

Further, each winding unit comprises a same-layer conductor positioned on one radial side of the stator core and a same-layer conductor positioned on the other radial side of the stator core; the same-layer conductors positioned on one side of the radial direction of the stator core cross along the circumferential direction A of the stator core, and the same-layer conductors positioned on the other side of the radial direction of the stator core cross along the circumferential direction B of the stator core.

Further, the same-layer conductors on one side in the radial direction of the stator core in the Z winding units of each sub-branch winding are positioned in N slots adjacent in the circumferential direction of the stator core, and the same-layer conductors on the other side in the radial direction of the stator core in the Z winding units of the sub-branch winding are positioned in N slots adjacent in the circumferential direction of the stator core.

Further, the outgoing lines of the X branch windings of the phase winding are positioned at two adjacent magnetic poles of the stator winding.

Further, each sub-branch winding comprises at least one coil group, and the coil group comprises 3 conductors which are positioned adjacent to the stator core in the circumferential direction;

or, two identical first conductors of the 3 conductors of the coil set surround the second conductor;

or, a first conductor of the 3 conductors of the coil set surrounds two identical second conductors;

or, 3 conductors of the coil group are a first conductor surrounding a second conductor, and a third conductor is far away from one side of the first conductor surrounding the second conductor;

or, 3 conductors of the coil set surround the second conductor and the third conductor for the first conductor.

Further, the pitches of N identical-layer conductors positioned on one radial side of the stator core in each sub-branch winding are the whole pitches; the pitch of a first one of N identical layer conductors positioned on the other side of the radial direction of the stator core in the sub-branch winding is long pitch, and the pitches of a second one and a third one of the N identical layer conductors are short pitch;

Or, the pitches of N identical-layer conductors positioned on one radial side of the stator core in each sub-branch winding are the whole pitches; the pitch of the first and second identical layer conductors in N identical layer conductors positioned on the other side of the radial direction of the stator core in the sub-branch winding is long pitch, and the pitch of the third identical layer conductor in N identical layer conductors is short pitch;

or, the pitches of N identical-layer conductors positioned on one radial side of the stator core in each sub-branch winding are the whole pitches; the pitch of the first same-layer conductor in N same-layer conductors positioned on the other side of the radial direction of the stator core in the sub-branch winding is long, the pitch of the second same-layer conductor is full pitch, and the pitch of the third same-layer conductor is short pitch.

Further, the pitch of the first same-layer conductor in the N same-layer conductors positioned on one radial side of the stator core in each sub-branch winding is a long pitch, and the pitch of the second same-layer conductor is a short pitch; the pitch of a first same-layer conductor in N same-layer conductors positioned on the other side of the radial direction of the stator core in the sub-branch winding is long pitch, and the pitch of a second same-layer conductor is short pitch;

or, the pitch of the first same-layer conductor in the N same-layer conductors positioned on one radial side of the stator core in each sub-branch winding is a long pitch, and the pitch of the second same-layer conductor is a short pitch; the pitch of the first same-layer conductor in N same-layer conductors positioned on the other side of the radial direction of the stator core in the sub-branch winding is long, the pitch of the second same-layer conductor is full pitch, and the pitch of the third same-layer conductor is short pitch.

Further, a first same-layer conductor in N same-layer conductors positioned on one radial side of the stator core in each sub-branch winding is long in pitch, a second same-layer conductor is full in pitch, and a third same-layer conductor is short in pitch; the first same-layer conductor in N same-layer conductors positioned on the other side of the radial direction of the stator core in the sub-branch winding is long-pitch, the second same-layer conductor is full-pitch, and the third same-layer conductor is short-pitch.

According to another aspect of the present utility model, there is provided a flat wire motor including the flat wire motor stator described above.

By applying the technical scheme of the utility model, the flat wire motor stator and the flat wire motor are characterized in that a stator core is provided with a plurality of grooves which are formed in the radial inner surface of the stator core and are spaced in the circumferential direction of the stator core; the stator winding comprises a plurality of phase windings arranged on a stator core, each phase winding comprises X branch windings, the X branch windings are radially nested along the stator core, each branch winding comprises Y sub-branch windings, and the X X Y sub-branch windings of each phase winding are not overlapped along the circumferential part of the stator core; each sub-branch winding comprises Z winding units, the Z winding units are positioned in N slots adjacent to the stator core in the circumferential direction, each winding unit is sequentially connected to the other radial side of the stator core along one radial side of the stator core through a plurality of conductors and then returns to one radial side of the stator core, wherein X is 2 or 4, Y is 1 or 2, Z is 3, and N is 3. The utility model provides a flat wire motor stator and a flat wire motor, which adopt a completely symmetrical structure on a magnetic circuit through a winding structure, eliminate the problem of circulation current generated by an asymmetrical structure, reduce torque fluctuation and noise, simplify manufacturing procedures by adopting a single conductor, reduce production cost and improve processing efficiency.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of a stator winding according to a first embodiment of the present utility model;

FIG. 2 is a schematic diagram of a phase winding of a stator winding according to a first embodiment of the present utility model;

FIG. 3 is a planar expanded view of a phase winding according to an embodiment of the present utility model;

FIG. 4 is a schematic plan view of a branch winding of a phase winding in accordance with an embodiment of the present utility model;

FIG. 5 is a schematic plan view of a sub-leg winding of a mid-phase winding according to an embodiment of the present utility model;

FIG. 6 is a schematic plan view of another sub-leg winding of one of the phase windings according to an embodiment of the present utility model;

FIG. 7 is a schematic plan view of another branch winding of a phase winding according to an embodiment of the present utility model;

FIG. 8 is a schematic plan view of a sub-leg winding of another leg winding of the phase winding of the first embodiment of the present utility model;

FIG. 9 is a schematic plan view of another sub-leg winding of another leg winding of the phase winding of the first embodiment of the present utility model;

FIG. 10 is a schematic plan view of a branch winding of a phase winding in accordance with a second embodiment of the present utility model;

FIG. 11 is a schematic plan view of a branch winding of a three-phase winding according to an embodiment of the present utility model;

FIG. 12 is a schematic plan view of a branch winding of a phase winding in accordance with a fourth embodiment of the present utility model;

FIG. 13 is a schematic plan view of a branch winding of a phase winding in accordance with a fifth embodiment of the present utility model;

FIG. 14 is a schematic plan view of a branch winding of a sixth embodiment of the present utility model;

FIG. 15 is a schematic plan view of a branch winding of a seventh embodiment of the present utility model;

FIG. 16 is a schematic plan view of a branch winding of an eighth phase winding according to an embodiment of the present utility model;

FIG. 17 is a schematic plan view of a leg winding of a nine-phase winding according to an embodiment of the present utility model;

FIG. 18 is a schematic plan view of a leg winding of a phase winding in accordance with an embodiment of the present utility model;

FIG. 19 is a schematic plan view of a leg winding of a phase winding in accordance with an eleventh embodiment of the utility model;

FIG. 20 is a schematic plan view of a leg winding of a twelve medium phase winding according to an embodiment of the present utility model;

FIG. 21 is a schematic plan view of a phase winding of a thirteenth embodiment of the utility model;

FIG. 22 is a schematic plan view of a phase winding of a fourteenth embodiment of the present utility model;

FIG. 23 is a schematic plan view of a leg winding of a fifteen phase winding in accordance with an embodiment of the present utility model;

FIG. 24 is a schematic plan view of a winding of one leg of a sixteen medium phase winding according to an embodiment of the utility model;

FIG. 25 is a schematic plan view of a branch winding of a seventeenth embodiment of the present utility model;

FIG. 26 is a schematic plan view of a bypass winding for eighteen intermediate phase windings in accordance with an embodiment of the present utility model;

FIG. 27 is a schematic diagram of a welding end of one branch winding of the phase winding in the second embodiment of the present utility model;

fig. 28 is a schematic diagram of a plug wire end of one branch winding of the phase winding in the second embodiment of the present utility model;

FIG. 29 is a schematic diagram of a welding end of one leg of a twelve phase winding in accordance with an embodiment of the present utility model;

fig. 30 is a schematic diagram of a plug end of one branch winding of a twelve medium phase winding according to an embodiment of the present utility model;

Detailed Description

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

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and in the drawings are used for distinguishing between different objects and not for limiting a particular order. The following embodiments of the present utility model may be implemented individually or in combination with each other, and the embodiments of the present utility model are not limited thereto.

The utility model provides a flat wire motor stator. Pitch in this application is the circumferential spacing between two slot interiors of the same conductor; it should be noted that, in the present application, a radial side of the stator core may be a side close to a central axis direction of the stator core, or may be a side far from the central axis direction of the stator core.

Illustratively, as shown in fig. 1 to 30, a flat wire motor stator includes: a stator core 20, the stator core 20 having a plurality of slots formed in a radially inner surface of the stator core 20 and spaced apart in a circumferential direction of the stator core 20; and a stator winding 10, the stator winding 10 including a plurality of phase windings mounted on the stator core 20.

Referring to fig. 1 to 30, a flat wire motor stator includes: a stator core 20, the stator core 20 having a plurality of slots formed in a radial inner surface of the stator core 20 and spaced apart in a circumferential direction of the stator core 20, the stator core 20 defining one tooth 22 by two adjacent slots 21, the stator core 20 forming two end surfaces of the stator core in an axial direction by stacking a plurality of annular magnetic steel plates, other conventional metal plates may be used instead of the magnetic steel plates; also included is a stator winding 10, the stator winding 10 comprising 3 phase windings (which in this embodiment may be any of a U-phase winding, a V-phase winding, a W-phase winding) mounted on the stator core 20.

As illustrated in fig. 1 to 30, each phase winding includes X branch windings, which are sequentially nested in the radial direction of the stator core, each branch winding includes Y sub-branch windings, each sub-branch winding includes Z winding units, which are located in N slots adjacent in the circumferential direction of the stator core, each winding unit is sequentially connected to the other radial side of the stator core by a plurality of conductors along one radial side of the stator core and then returned to the one radial side of the stator core, wherein X is 2 or 4, Y is 1 or 2, Z is 3, and N is 3.

Referring to fig. 1 to 26, in the first to the eighteenth embodiments, the number of slots per phase of each pole of the stator winding 10 is 3, and in the first to the thirteenth embodiments, referring to fig. 1 to 21, the U-phase windings are connected in parallel by 2 branch windings (where X is 2), the 2 branch windings are nested radially along the stator core, each branch winding includes 2 sub-branch windings (where Y is 2), the 2 sub-branch windings are nested sequentially radially along the stator core, the 4 sub-branch windings of the U-phase windings are not overlapped along the circumferential portion of the stator core, and two sub-branch windings of the 2 sub-branch windings in each branch winding are not overlapped along the circumferential portion of the stator core; referring to fig. 22 to 26, in fourteen to eighteen embodiments, the U-phase windings are connected in parallel (where X is 4) by 4 leg windings, the 4 leg windings are nested radially along the stator core, each leg winding includes 1 sub-leg winding (where Y is 1), and the 4 sub-leg windings of the U-phase windings are not overlapped with each other along the circumferential direction of the stator core;

Referring to fig. 1 to 30, in the embodiment, each sub-branch winding includes 3 winding units (Z is 3 here), where the 3 winding units are sequentially located in 3 slots (N is 3 here) adjacent to each other in the circumferential direction of the stator core, each winding unit is sequentially connected to the radial outside of the stator core along the radial inside of the stator core by a plurality of conductors and then returns to the radial inside of the stator core, and of course, each winding unit may also be sequentially connected to the radial inside of the stator core along the radial outside of the stator core by a plurality of conductors and then returns to the radial outside of the stator core;

specifically, in the first to thirteenth embodiments, the stator winding is a 3-phase winding, each phase winding is connected in parallel by 2 branch windings (the first branch winding U1-U2, the second branch winding U3-U4), each branch winding includes 2 sub-branch windings (the first sub-branch winding 100, the second sub-branch winding 200), the 2 sub-branch windings are sequentially connected along the radial direction of the stator core, in the fourteen to eighteenth embodiments, the stator winding is a 3-phase winding, each phase winding is connected in parallel by 4 branch windings (the first branch winding U1-U2, the second branch winding U3-U4, the third branch winding U5-U6, the fourth branch winding U7-U8), each branch winding includes 1 sub-branch winding, and in the first embodiment, each phase winding is connected in parallel by 2 branch windings, and after the connection of the 2 sub-branch windings in each branch winding is disconnected, as shown in the thirteenth embodiment (as shown in fig. 21), each phase winding includes 4 branch windings connected in parallel; each sub-branch winding includes 3 winding units (a first winding unit 120, a second winding unit 140, and a third winding unit 160), each winding unit is sequentially connected by a plurality of conductors, specifically, a lead end of the first winding unit 120 of the first sub-branch winding 100 is connected to a first conductor located inside a first slot of a stator core radial first layer 3 slot, the first conductor is located inside a first slot of a stator core radial second layer 2 slot 56, the second conductor is located inside a second slot of a stator core radial third layer 47 slot, the third conductor is located inside a first slot of a stator core radial fourth layer 38 slot, the third conductor is located inside a second slot of a stator core radial second layer 5 slot 29, the fourth conductor is located inside a first slot of a stator core radial second layer 20 slot, the fourth conductor is located inside a first slot of a stator core radial second layer 6 slot, the fifth conductor is located inside a stator core radial second slot 6 slot, the fifth conductor is located inside a third slot 3 slot of a stator core radial second layer 47 slot, and the fifth conductor is located inside a fifth slot 3 slot of a stator core radial second layer 7 slot, the fifth conductor is located inside a third slot 3 slot of a stator core radial second slot 3 slot, and the fifth conductor is located inside a fifth slot 3 slot of a stator core radial second slot 3; that is, the first winding unit 120 is sequentially connected to the 6 th radial layer of the stator core by 6 conductors along the first radial layer of the stator core, and then returns to the first radial layer of the stator core. Further, after the first winding unit is from 3 conductors to a 6 th radial layer of the stator core along the circumferential direction A of the stator core along the radial direction of the stator core (anticlockwise direction), from the 3 conductors to the 1 st radial layer of the stator core along the circumferential direction B of the stator core along the radial direction 6 of the stator core; two groove interiors of a first conductor in 3 conductors along the circumferential direction A of the stator core are positioned in a 1 st layer 3 rd groove and a 1 st layer 65 th groove in the radial direction of the stator core, two groove interiors of a second conductor are positioned in a 56 nd layer and a 47 th layer in the radial direction of the stator core, two groove interiors of a third conductor are positioned in a 38 th layer and a 29 th layer in the radial direction of the stator core, two groove interiors of a first conductor in 3 conductors along the circumferential direction B of the stator core are positioned in a 65 th layer and a 56 th layer in the radial direction of the stator core, two groove interiors of a second conductor are positioned in a 47 th layer and a 38 th layer in the radial direction of the stator core, two groove interiors of a third conductor are positioned in a 29 th layer and a 20 th layer in the radial direction of the stator core, and 3 conductors which are sequentially connected along the circumferential direction A of the stator core are sequentially positioned in two adjacent layers in the radial direction of the stator core. The lead end connection first conductor of the second winding unit 140 of the first sub-branch winding 100 is located inside a first slot of the stator core radial 1 st layer 2 nd slot, the first conductor is located inside a first slot of the stator core radial 1 st layer 64 st slot, the second conductor is located inside a first slot of the stator core radial 2 nd layer 55 th slot, the second conductor is located inside a first slot of the stator core radial 3 rd layer 46 th slot, the third conductor is located inside a second slot of the stator core radial 4 th layer 37 th slot, the third conductor is located inside a first slot of the stator core radial 5 th layer 28 th slot, the fourth conductor is located inside a first slot of the stator core radial 6 th layer 19 th slot, the fourth conductor is located inside a second slot of the stator core radial 6 th layer 28 th slot, the fifth conductor is located inside a first slot of the stator core radial 5 th layer 37 th slot, the fifth conductor is located inside a second slot of the stator core radial 4 th layer 46 th slot, the second conductor is located inside a first slot of the stator core radial 6 th layer 37 th slot, the fourth conductor is located inside a second slot of the stator core radial 6 th layer 55 th slot, the sixth conductor is located inside a second slot of the stator core radial 3 th layer 6 th slot, the sixth conductor is located inside the stator core radial 3 nd wire is located inside the stator core radial 6 th slot of the second conductor is located inside the stator core radial 6 th layer 6 th slot, and the stator core is located inside the stator core radial layer 2 nd wire is located at the stator core radial layer 2; that is, the second winding unit 140 is sequentially connected to the 6 th radial layer of the stator core by 6 conductors along the first radial layer of the stator core and then returns to the first radial layer of the stator core. Further, after the second winding unit is from 3 conductors to a 6 th radial layer of the stator core along the circumferential direction A of the stator core along the radial direction of the stator core (anticlockwise direction), from the 3 conductors to the 1 st radial layer of the stator core along the circumferential direction B of the stator core along the radial direction 6 of the stator core; two groove interiors of a first conductor in 3 conductors along the circumferential direction A of the stator core are positioned in a 1 st layer 2 nd groove and a 1 st layer 64 th groove in the radial direction of the stator core, two groove interiors of a second conductor are positioned in a 55 nd layer 55 th groove and a 3 rd layer 46 th groove in the radial direction of the stator core, two groove interiors of a third conductor are positioned in a 37 th layer and a 28 th layer in the radial direction of the stator core, two groove interiors of a first conductor in 3 conductors along the circumferential direction B of the stator core are positioned in a 64 th layer and a 55 th layer in the radial direction of the stator core, two groove interiors of a second conductor are positioned in a 46 th layer and a 37 th layer in the radial direction of the stator core, two groove interiors of a third conductor are positioned in a 28 th layer and a 19 th layer in the radial direction of the stator core, and 3 conductors which are sequentially connected along the circumferential direction A of the stator core are sequentially positioned in two adjacent layers in the radial direction of the stator core. The lead end connection first conductor of the third winding unit 160 of the first sub-branch winding 100 is located inside a first slot of the stator core radial 1 st layer 1 st slot, the first conductor is located inside a first slot of the stator core radial 1 st layer 66 st slot, the second conductor is located inside a first slot of the stator core radial 2 nd layer 57 th slot, the second conductor is located inside a first slot of the stator core radial 3 rd layer 48 th slot, the third conductor is located inside a second slot of the stator core radial 4 th layer 39 th slot, the third conductor is located inside a first slot of the stator core radial 5 th layer 30 th slot, the fourth conductor is located inside a first slot of the stator core radial 6 th layer 21 st slot, the fourth conductor is located inside a second slot of the stator core radial 6 th layer 30 th slot, the fifth conductor is located inside a first slot of the stator core radial 5 th layer 39 th slot, the fifth conductor is located inside a first slot of the stator core radial 4 th layer 48 th slot, the second conductor is located inside a sixth conductor is located inside a third slot of the stator core radial 5 th layer 39 th slot, and the third conductor is located inside a third slot of the stator core radial 5 th layer 57 th slot; that is, the third winding unit 160 is sequentially connected to the 6 th radial layer of the stator core by 6 conductors along the first radial layer of the stator core and then returns to the first radial layer of the stator core. Further, after the third winding unit is from 3 conductors to a 6 th radial layer of the stator core along the circumferential direction A of the stator core along the radial direction of the stator core (anticlockwise direction), from the 3 conductors to the 1 st radial layer of the stator core along the circumferential direction B of the stator core along the radial direction 6 of the stator core; two groove interiors of a first conductor in 3 conductors along the circumferential direction A of the stator core are positioned in a 1 st layer 1 st groove and a 1 st layer 66 th groove in the radial direction of the stator core, two groove interiors of a second conductor are positioned in a 57 th layer and a 3 rd layer 48 th groove in the radial direction of the stator core, two groove interiors of a third conductor are positioned in a 39 th layer and a 30 th layer in the radial direction of the stator core, two groove interiors of a first conductor in 3 conductors along the circumferential direction B of the stator core are positioned in a 66 th layer and a 57 th layer in the radial direction of the stator core, two groove interiors of a second conductor are positioned in a 48 th layer and a 39 th layer in the radial direction of the stator core, two groove interiors of a third conductor are positioned in a 30 th layer and a 21 th layer in the radial direction of the stator core, and 3 conductors which are sequentially connected along the circumferential direction A of the stator core are sequentially positioned in two adjacent layers in the radial direction of the stator core.

In the first to thirteenth embodiments, the second sub-branch winding 200 is the first sub-branch winding, but in the fourteenth to eighteenth embodiments, the second sub-branch winding 200 is the second sub-branch winding (in the first to thirteenth embodiments, the second sub-branch winding 200 is the second sub-branch winding of the first of the two sub-branch windings of the U-phase winding, in the fourteenth to eighteenth embodiments, the second sub-branch winding 200 is the fourth sub-branch winding of the U-phase winding), the lead end connection first conductor of the first winding unit 120 is located inside a first slot of the stator core radial first layer 19 slot, the first conductor is located inside a second slot of the stator core radial first layer 1, the second conductor is located inside a first slot of the stator core radial second layer 2, the second conductor is located inside a second slot of the stator core radial second layer 3 slot, the third conductor of the third layer 66 slot of the stator core radial first layer is located inside a third slot of the second layer 6, the third conductor is located inside a fifth conductor of the stator core radial second layer 48, the third conductor is located inside a fifth conductor is located inside a third slot of the stator core radial first layer 6, the fifth conductor is located inside a third slot of the stator core radial layer 6, the fifth conductor is located inside a third slot of the third slot 6, and the third conductor is located inside a fifth slot of the third slot is located inside a third slot 6 slot, and a fifth slot is located inside a fifth slot, and a fifth slot is located, the sixth conductor is positioned in a second slot of the 12 th slot of the 2 nd layer of the radial direction of the stator core and is connected with the outlet end of the first winding unit 120; that is, the first winding unit 120 is sequentially connected to the 6 th radial layer of the stator core by 6 conductors along the first radial layer of the stator core, and then returns to the first radial layer of the stator core. Further, after the first winding unit is from 3 conductors to a 6 th radial layer of the stator core along the circumferential direction A of the stator core along the radial direction of the stator core (anticlockwise direction), from the 3 conductors to the 1 st radial layer of the stator core along the circumferential direction B of the stator core along the radial direction 6 of the stator core; two groove interiors of a first conductor in 3 conductors along the circumferential direction A of the stator core are positioned in a 1 st layer 19 th groove and a 1 st layer 12 th groove in the radial direction of the stator core, two groove interiors of a second conductor are positioned in a 2 nd layer 3 rd groove and a 3 rd layer 66 th groove in the radial direction of the stator core, two groove interiors of a third conductor are positioned in a 57 th layer and a 48 th layer in the radial direction of the stator core, two groove interiors of a first conductor in 3 conductors along the circumferential direction B of the stator core are positioned in a 12 th layer and a 3 rd layer in the radial direction of the stator core, two groove interiors of a second conductor are positioned in a 66 th layer and a 57 th layer in the radial direction of the stator core, two groove interiors of a third conductor are positioned in a 48 th layer and a 39 th layer in the radial direction of the stator core, and 3 conductors which are sequentially connected along the circumferential direction A of the stator core are sequentially positioned in two adjacent layers in the radial direction of the stator core. The lead end connection first conductor of the second winding unit 140 of the second sub-branch winding 200 is located inside a first slot of the stator core radial 1 st layer 21 st slot, the first conductor is located inside a first slot of the stator core radial 1 st layer 11 st slot, the second conductor is located inside a first slot of the stator core radial 2 nd layer 2 nd slot, the second conductor is located inside a first slot of the stator core radial 3 rd layer 65 th slot, the third conductor is located inside a second slot of the stator core radial 4 th layer 56 th slot, the third conductor is located inside a first slot of the stator core radial 5 th layer 47 th slot, the fourth conductor is located inside a first slot of the stator core radial 6 th layer 38 th slot, the fourth conductor is located inside a second slot of the stator core radial 6 th layer 47 th slot, the fifth conductor is located inside a first slot of the stator core radial 5 th layer 56 th slot, the fifth conductor is located inside a second slot of the stator core radial 4 th layer 65 th slot, the second conductor is located inside a sixth conductor is located inside a second slot of the stator core radial 2 nd layer 3 th slot, the sixth conductor is located inside a second slot of the stator core radial 2 nd winding unit is located inside a second slot of the stator core radial 2; that is, the second winding unit 140 is sequentially connected to the 6 th radial layer of the stator core by 6 conductors along the first radial layer of the stator core and then returns to the first radial layer of the stator core. Further, after the second winding unit is from 3 conductors to a 6 th radial layer of the stator core along the circumferential direction A of the stator core along the radial direction of the stator core (anticlockwise direction), from the 3 conductors to the 1 st radial layer of the stator core along the circumferential direction B of the stator core along the radial direction 6 of the stator core; two groove interiors of a first conductor in 3 conductors along the circumferential direction A of the stator core are positioned in a 1 st layer 21 st groove and a 1 st layer 11 th groove in the radial direction of the stator core, two groove interiors of a second conductor are positioned in a 2 nd layer 2 nd groove and a 3 rd layer 65 th groove in the radial direction of the stator core, two groove interiors of a third conductor are positioned in a 56 th layer and a 47 th layer in the radial direction of the stator core, two groove interiors of a first conductor in 3 conductors along the circumferential direction B of the stator core are positioned in a 11 th layer and a 2 nd layer in the radial direction of the stator core, two groove interiors of a second conductor are positioned in a 65 th layer and a 56 th layer in the radial direction of the stator core, two groove interiors of a third conductor are positioned in a 47 th layer and a 38 th layer in the radial direction of the stator core, and 3 conductors which are sequentially connected along the circumferential direction A of the stator core are sequentially positioned in two adjacent layers in the radial direction of the stator core. The lead end connection first conductor of the third winding unit 160 of the second sub-branch winding 200 is located inside a first slot of the stator core radial layer 1 slot 20, the first conductor is located inside a first slot of the stator core radial layer 1 slot 10, the second conductor is located inside a first slot of the stator core radial layer 2 slot 1, the second conductor is located inside a first slot of the stator core radial layer 3 slot 64, the third conductor is located inside a second slot of the stator core radial layer 4 slot 55, the third conductor is located inside a first slot of the stator core radial layer 5 slot 46, the fourth conductor is located inside a first slot of the stator core radial layer 6 slot 37, the fourth conductor is located inside a second slot of the stator core radial layer 6 slot 46, the fifth conductor is located inside a first slot of the stator core radial layer 5 slot 55, the fifth conductor is located inside a second slot of the stator core radial layer 4 slot 64, the sixth conductor is located inside a first slot of the stator core radial layer 2, the third conductor is located inside a second slot of the stator core radial layer 4 slot 55, and the third conductor is located inside a second slot of the stator core radial layer 2; that is, the third winding unit 160 is sequentially connected to the 6 th radial layer of the stator core by 6 conductors along the first radial layer of the stator core and then returns to the first radial layer of the stator core. Further, after the third winding unit is from 3 conductors to a 6 th radial layer of the stator core along the circumferential direction A of the stator core along the radial direction of the stator core (anticlockwise direction), from the 3 conductors to the 1 st radial layer of the stator core along the circumferential direction B of the stator core along the radial direction 6 of the stator core; two slots of a first conductor in 3 conductors along the circumferential direction A of the stator core are positioned in a 1 st layer of 20 th slot and a 1 st layer of 10 th slot in the radial direction of the stator core, two slots of a second conductor are positioned in a 2 nd layer of 1 st slot and a 3 rd layer of 64 th slot in the radial direction of the stator core, two slots of a third conductor are positioned in a 55 th layer and a 46 th layer of 55 th slot in the radial direction of the stator core, two slots of a first conductor in 3 conductors along the circumferential direction B of the stator core are positioned in a 10 th layer and a 1 st layer of the radial direction of the stator core, two slots of a second conductor are positioned in a 64 th slot and a 55 th layer of the radial direction of the stator core, two slots of a third conductor are positioned in a 46 th layer and a 37 th layer of the radial direction of the stator core, and 3 conductors which are sequentially connected along the circumferential direction A of the stator core are sequentially positioned in two adjacent radial layers of the stator core; further, the 3 winding units of each sub-branch winding are sequentially positioned in 3 slots adjacent to the stator core in the circumferential direction.

Referring to fig. 1 to 21, in the first to thirteenth embodiments, the first leg winding (U1-U2) of the U-phase winding includes 2 sub-leg windings, the first leg winding U1-U2 is located in 21 st to 19 th slots, 12 th to 10 th slots, 1 st to 3 rd slots, 64 th to 66 th slots, 55 th to 57 th slots, 46 th to 48 th slots, 37 th to 39 th slots, 28 th to 30 th slots, and 19 th to 21 th slots of the fifth to sixth layers of the stator core in the radial first layer; the second branch windings U3-U4 are positioned in the 57 th slot to 55 th slot, the 48 th slot to 46 th slot, the 39 th slot to 37 th slot, the 30 th slot to 28 th slot, the 21 st slot to 19 th slot, the 12 th slot to 10 th slot, the 3 rd slot to 1 st slot, the 66 th slot to 64 th slot, and the 57 th slot to 55 th slot of the fifth layer; the first branch winding and the second branch winding are sequentially nested and arranged along the radial adjacent layers of the stator core; the first sub-branch winding of the first branch winding of the U-phase winding is wound with a 19 rd slot from a 3 rd slot along the circumferential direction of the stator core, the second sub-branch winding of the first branch winding of the U-phase winding is wound with a 37 th slot from a 21 st slot along the circumferential direction of the stator core, the first sub-branch winding of the second branch winding of the U-phase winding is wound with a 55 th slot from a 39 th slot along the circumferential direction of the stator core, the second sub-branch winding of the second branch winding of the U-phase winding is wound with a 1 st slot from a 57 th slot along the circumferential direction of the stator core, the first sub-branch winding of the first branch winding and the second sub-branch winding of the first branch winding do not overlap in the 36 th slot to the 4 th slot part in the circumferential direction of the stator core, the first sub-branch winding of the second branch winding is not overlapped with the second sub-branch winding of the second branch winding from the 72 th slot to the 40 th slot in the circumferential anticlockwise direction of the stator core, the first sub-branch winding of the first branch winding is not overlapped with the first sub-branch winding of the second branch winding from the 18 th slot to the 4 th slot in the circumferential anticlockwise direction of the stator core and from the 54 th slot to the 40 th slot in the circumferential anticlockwise direction of the stator core, the first sub-branch winding of the first branch winding is not overlapped with the second sub-branch winding of the second branch winding from the 18 th slot to the 4 th slot in the circumferential anticlockwise direction of the stator core and from the 72 nd slot to the 58 th slot in the circumferential anticlockwise direction of the stator core, and of course, the second sub-branch winding of the first branch winding is not overlapped with the sub-branch windings of other branch windings in the circumferential anticlockwise direction of the stator core, and further description is omitted.

Referring to fig. 22 to 30, in fourteenth to eighteenth embodiments, the first leg winding U1-U2 of the U-phase winding is located in the 1 st to 3 rd slots of the first layer, the 64 th to 66 th slots of the first and second layers, the 55 th to 57 th slots of the second and third layers, the 46 th to 48 th slots of the third and fourth layers, the 37 th to 39 th slots of the fourth and fifth layers, the 28 th to 30 th slots of the fifth and sixth layers, and the 19 th to 21 th slots of the sixth layers in the radial direction of the stator core; the second branch windings U3-U4 are positioned in the 19 th slot to the 21 st slot of the radial first layer, the 10 th slot to the 12 th slot of the first layer and the second layer, the 1 st slot to the 3 rd slot of the second layer and the third layer, the 64 th slot to the 66 th slot of the third layer and the fourth layer, the 55 th slot to the 57 th slot of the fourth layer and the fifth layer, the 46 th slot to the 48 th slot of the fifth layer and the sixth layer and the 37 th slot to the 39 th slot of the sixth layer of the stator core; the third branch windings U5-U6 are positioned in the 57 th slot to the 55 th slot of one layer, the 48 th slot to the 46 th slot of the first layer and the second layer, the 39 th slot to the 37 th slot of the second layer and the third layer, the 30 th slot to the 28 th slot of the third layer and the fourth layer, the 21 st slot to the 19 th slot of the fourth layer and the fifth layer, the 12 th slot to the 10 th slot of the fifth layer and the sixth layer and the 3 rd slot to the 1 st slot of the sixth layer in the radial direction of the stator core; the fourth branch windings U7-U8 are positioned in the 39 th slot to the 37 th slot of one layer, the 30 th slot to the 28 th slot of the first layer and the second layer, the 21 st slot to the 19 th slot of the second layer and the third layer, the 12 th slot to the 10 th slot of the third layer and the fourth layer, the 3 rd slot to the 1 st slot of the fourth layer and the fifth layer, the 66 th slot to the 64 th slot of the fifth layer and the sixth layer and the 57 th slot to the 55 th slot of the sixth layer in the radial direction of the stator core; the 4 branch windings of the U-phase winding are radially nested along the stator core, the first branch winding U1-U2 is nested along the stator core radial layer 2 and layer 3 from the 1 st slot to the 3 rd slot, the fourth branch winding U7-U8 is nested along the stator core radial layer 4 and layer 5 from the 1 st slot to the 3 rd slot, and the third branch winding U5-U6 is nested along the stator core radial layer 6 from the 1 st slot to the 3 rd slot, although other slots can be used as references. The first sub-branch winding of the first branch winding of the U-phase winding is wound by a 3 rd slot anticlockwise along the circumferential direction of the stator core into a 19 rd slot, the first sub-branch winding of the second branch winding of the U-phase winding is wound by a 21 st slot anticlockwise along the circumferential direction of the stator core into a 37 th slot, the first sub-branch winding of the fourth branch winding of the U-phase winding is wound by a 39 th slot along the circumferential direction of the stator core into a 55 th slot, the first sub-branch winding of the third branch winding of the U-phase winding is wound by a 57 th slot anticlockwise along the circumferential direction of the stator core into a 1 st slot, the first sub-branch winding of the first branch winding and the first sub-branch winding of the second branch winding are not overlapped in the 36 th slot to the 4 th slot part in the circumferential direction of the stator core, the first sub-branch winding of the third branch winding is not overlapped with the first sub-branch winding of the fourth branch winding in the 72 th slot to the 40 th slot in the circumferential anticlockwise direction of the stator core, the first sub-branch winding of the first branch winding is not overlapped with the first sub-branch winding of the third branch winding in the 18 th slot to the 4 th slot in the circumferential anticlockwise direction of the stator core and the 72 th slot to the 58 th slot in the circumferential anticlockwise direction of the stator core, the first sub-branch winding of the first branch winding is not overlapped with the first sub-branch winding of the fourth branch winding in the 18 th slot to the 4 th slot in the circumferential anticlockwise direction of the stator core and the 54 th slot to the 40 th slot in the circumferential anticlockwise direction of the stator core, and of course, the first sub-branch winding of the second branch winding is not overlapped with the sub-branch windings of other branch windings in the circumferential anticlockwise direction of the stator core, and further details are not made herein.

As illustrated in fig. 1 to 30, in an embodiment, 3 winding units of each sub-branch winding are sequentially connected in the same region of the stator core, and each sub-branch winding is not fully wound one turn in the circumferential direction of the stator core.

Further, in the embodiment, the last conductor of the first winding unit 120 of the first sub-branch winding is located at the lead end of the winding unit, which is connected to the outlet end of the winding unit and is connected to the first conductor of the second winding unit 140, which is located at the slot inner of the 2 nd slot of the 1 st radial layer of the stator core, the last conductor of the second winding unit 140 is located at the slot inner of the 64 th slot of the 2 nd radial layer of the stator core, is connected to the outlet end of the winding unit, which is connected to the first conductor of the third winding unit 160, which is located at the slot inner of the 1 st radial layer of the stator core, and the last conductor of the third winding unit 160 is located at the outlet end of the winding unit, which is connected to the outlet end of the winding unit, wherein the 3 winding units of the first sub-branch winding are sequentially connected to the 3 rd slot region of the stator core, and the 3 winding units of the first sub-branch winding are wound from the 3 rd slot to the 19 th slot of the stator core in the counterclockwise direction along the stator core circumferential direction, and the 3 winding units of the 3 sub-branch winding are wound from the 19 th slot to the 18 th slot of the non-winding slot of the 4 th radial winding in the circumferential direction; correspondingly, with reference to fig. 3 to 30, the 3 winding units of the other sub-branch windings are also sequentially connected in the same region of the stator core, and each sub-branch winding is not wound one circle along the circumferential direction of the stator core.

Illustratively, as shown in fig. 1 to 30, in the embodiment, each winding unit includes one common-layer conductor located on one side (inner layer) in the radial direction of the stator core and one common-layer conductor located on the outer layer in the radial direction of the stator core, the common-layer conductor located on one side (inner layer) in the radial direction of the stator core crossing in the direction of the stator core circumferential direction a, and the common-layer conductor located on the other side (outer layer) in the radial direction of the stator core crossing in the direction of the stator core circumferential direction B.

Referring to fig. 1 to 30, in an embodiment, the first winding unit 120 includes one identical layer conductor located at a radially inner layer of the stator core, the identical layer conductor located at the 3 rd and 65 th slots of the radially first layer of the stator core, the first winding unit 120 includes one identical layer conductor located at a radially outer layer of the stator core, the identical layer conductor located at the 20 th and 29 th slots of the radially sixth layer of the stator core, the identical layer conductor located at the radially inner layer of the stator core spans in a circumferential direction a (counterclockwise) of the stator core, the identical layer conductor located at the radially outer layer of the stator core spans in a circumferential direction B (clockwise) of the stator core, the second winding unit 140 includes one identical layer conductor located at the radially inner layer of the stator core, the identical layer conductor located at the 2 nd and 64 th slots of the radially first layer of the stator core, the second winding unit 140 includes a same layer conductor located at the radially outer layer of the stator core, the same layer conductor located at the 19 th and 28 th slots of the radially sixth layer of the stator core, the same layer conductor located at the radially inner layer of the stator core crosses over in the stator core circumferential direction a (counterclockwise direction), the same layer conductor located at the radially outer layer of the stator core crosses over in the stator core circumferential direction B (clockwise direction), the third winding unit 160 includes a same layer conductor located at the radially inner layer of the stator core, the same layer conductor located at the 1 st and 66 th slots of the radially first layer of the stator core, the third winding unit 160 includes a same layer conductor located at the radially outer layer of the stator core, the same layer conductor located at the 21 st and 30 th slots of the radially sixth layer of the stator core, the same layer conductor located at the radially inner layer of the stator core crosses over in the stator core circumferential direction a (counterclockwise direction), the same-layer conductors on the radially outer layer of the stator core cross in the direction of the stator core circumferential direction B (clockwise direction), and correspondingly, in combination with fig. 1 to 20, in the embodiment, other winding units also include one same-layer conductor on the radially inner layer of the stator core and one same-layer conductor on the radially outer layer of the stator core, the same-layer conductors on the radially inner layer of the stator core cross in the direction of the stator core circumferential direction a, and the same-layer conductors on the radially outer layer of the stator core cross in the direction of the stator core circumferential direction B; in this embodiment of the present application, the direction along the stator core circumferential direction a may be a clockwise direction, the direction along the stator core circumferential direction B may be a counterclockwise direction, and correspondingly, the direction along the stator core circumferential direction B may also be a counterclockwise direction, and the direction along the stator core circumferential direction a may also be a clockwise direction.

As illustrated in fig. 1 to 30, in an exemplary embodiment, 3 identical layer conductors located on one side in the radial direction of the stator core in 3 winding units of each sub-branch winding are located in 3 slots adjacent in the circumferential direction of the stator core, and 3 identical layer conductors located on the other side in the radial direction of the stator core in 3 winding units of the sub-branch winding are located in 3 slots adjacent in the circumferential direction of the stator core.

Referring to fig. 1 to 30, in the embodiment, 3 identical layer conductors located at the radially inner layer of the stator core in 3 winding units of each sub-branch winding are located in 3 slots adjacent to the stator core in the circumferential direction, and 3 identical layer conductors located at the radially outer layer of the stator core in 3 winding units of the sub-branch winding are located in 3 slots adjacent to the stator core in the circumferential direction; specifically, referring to fig. 4, one of the same layer conductors located at the radially inner layer of the stator core in the first winding unit of the first sub-branch winding is located at the 1 st slot and 66 th slot of the radially first layer of the stator core, one of the same layer conductors located at the radially outer layer of the stator core in the first winding unit is located at the 21 st slot to 30 th slot of the radially 6 th layer of the stator core, one of the same layer conductors located at the radially inner layer of the stator core in the second winding unit of the first sub-branch winding is located at the 2 nd slot and 64 th slot of the radially first layer of the stator core, one of the same layer conductors located at the radially outer layer of the stator core in the second winding unit is located at the 19 th slot to 28 th slot of the radially 6 th layer of the stator core, one identical layer conductor positioned at the radial inner layer of the stator core in the third winding unit of the first sub-branch winding is positioned at the 3 rd slot and the 65 th slot of the radial first layer of the stator core, one identical layer conductor positioned at the radial outer layer of the stator core in the third winding unit is positioned at the 6 th 20 th slot and the 29 th slot of the radial direction of the stator core, namely, 3 identical layer conductors positioned at the radial inner layer of the stator core in the 3 winding units of the first sub-branch winding are positioned in the 3 circumferentially adjacent slots of the stator core, and correspondingly, in the embodiment, 3 identical layer conductors positioned at the radial outer layer of the stator core in the 3 identical layer conductors positioned at the radial outer layer of the stator core are also positioned in the 3 circumferentially adjacent slots of the stator core, and no further description is given here.

As shown in fig. 1 to 20 and 22, in the embodiment, the lead-out wires of the X-branch windings of the phase windings are located at two adjacent poles of the stator winding, X is 2 in the embodiment one to thirteenth, and X is 4 in the embodiment fourteen to eighteen.

Referring to fig. 3 to 20, in the first to thirteenth embodiments, the outside end of the slot, to which the lead end U1 of the first leg winding of the U-phase winding is connected, corresponds to the inside of the slot, which is the radial 1 st layer of the 3 rd slot of the stator core, the outside end of the slot, to which the lead end U2 of the first leg winding of the U-phase winding is connected, corresponds to the inside of the slot, which is the radial 4 th layer of the 66 th slot of the stator core, the lead wire of the first leg winding of the U-phase winding is located at the first magnetic pole of the stator winding (i.e., the circumferential 64 th slot to the 3 rd slot of the stator core), the outside end of the slot, to which the lead end U3 of the second leg winding of the U-phase winding is connected, corresponds to the inside of the radial 6 th layer of the 1 st slot of the stator core, the outside end of the slot, to which the lead wire of the second leg winding of the U-phase winding is connected, corresponds to the radial 3 rd layer of the 10 th slot of the stator core, and the lead wire of the second leg winding of the U-phase winding is located at the second magnetic pole of the stator winding (i.e., the circumferential 1 st slot to the 12 th slot of the stator core), which is located at the adjacent two magnetic poles of the stator poles.

Referring to fig. 22, in fourteen embodiments, the slot outer end portion connected to the lead end U1 of the first branch winding of the U-phase winding corresponds to the slot inside of the stator core radial 3 rd layer, the slot outer end portion connected to the lead end U2 of the first branch winding of the U-phase winding corresponds to the slot inside of the stator core radial 4 th layer 66 th layer, the lead wire of the first branch winding of the U-phase winding is located at the first magnetic pole of the stator winding (i.e., the stator core circumferential 64 th slot to the 3 rd slot), the slot outer end portion connected to the lead end U3 of the second branch winding of the U-phase winding corresponds to the slot inside of the stator core radial 1 st layer 3 rd layer, the slot outer end portion connected to the lead end U4 of the second branch winding of the U-phase winding corresponds to the slot inside of the stator core radial 2 nd layer 66 th layer, the outgoing line of the second branch winding of the U-phase winding is positioned at the first magnetic pole of the stator winding (namely, the 64 th slot to the 3 rd slot of the stator core circumference), the corresponding slot inside of the outer end part of the slot, which is connected with the lead end U5 of the third branch winding of the U-phase winding, is the radial 6 th layer 1 slot of the stator core, the corresponding slot inside of the outer end part of the slot, which is connected with the lead end U6 of the third branch winding of the U-phase winding, is the radial 5 th layer 10 slot of the stator core, the outgoing line of the third branch winding of the U-phase winding is positioned at the second magnetic pole of the stator winding (namely, the 1 st slot to the 12 th slot of the stator core circumference), the corresponding slot inside of the outer end part of the slot, which is connected with the lead end U7 of the fourth branch winding of the U-phase winding, is the radial 4 th layer 1 slot of the stator core, the corresponding slot inside of the outer end part, which is connected with the lead end U8 of the fourth branch winding of the U-phase winding, is the radial 3 rd layer 10 th slot of the stator core, the outgoing line of the fourth branch winding of the U-phase winding is positioned in the second magnetic pole of the stator winding (namely the 1 st slot to the 12 th slot of the circumferential direction of the stator core), and the outgoing line of the branch winding of the U-phase winding is positioned in two adjacent magnetic poles of the stator winding; in the prior art, the lead ends and star points of the stator winding cannot be concentrated on the requirement, are distributed on the opposite sides of the circumference, occupy more useless space, increase the quality of a shell and outgoing lines, prevent the weight reduction of the whole machine, and lead wires of branch windings of phase windings of the stator winding are positioned on two adjacent magnetic poles of the stator winding, so that the lead wires of the stator winding are concentrated, the copper consumption is reduced, the occupied space is small, and the weight reduction is facilitated.

As shown in fig. 21, each branch winding of the stator winding may be located at any position of the branch winding for outgoing lines, and is not limited to the embodiment shown in the drawings, and each branch winding of each phase winding of the stator winding may also be located at two non-adjacent magnetic pole outgoing lines of the stator winding as shown in fig. 21.

In the first to thirteenth embodiments, the U-phase winding obtains the positions in the embodiment where the wire outlet end U1-2 (the wire outlet end U1-2 connected to the inside of the slot of the 66 nd layer in the radial direction of the stator core) of the first sub-branch winding and the wire outlet end U2-1 (the wire outlet end U2-1 connected to the inside of the slot of the 1 st layer in the radial direction of the stator core) of the second sub-branch winding of each sub-branch winding are located in the radial direction of the stator core, and it is to be noted that the wire outlet ends and the wire outlet ends of the two sub-branch windings are not fixed, and after the first sub-branch winding and the second sub-branch winding are nested in sequence along the radial direction of the stator core, the wire outlet end of the first sub-branch winding and the wire outlet end of the second sub-branch winding are located in the radial direction of the stator core.

As shown in fig. 23 to 30, in fifteen to eighteenth embodiments, each of the sub-branch windings includes at least one coil group 550, and the coil group 550 includes 3 conductors located adjacent to each other in the circumferential direction of the stator core; or, two identical first conductors among the 3 conductors of the coil set 550 surround the second conductor; or, a first conductor of the 3 conductors of the coil set 550 surrounds two identical second conductors; or, 3 conductors of the coil assembly 550 are a first conductor surrounding a second conductor, and a third conductor is far from the side of the first conductor surrounding the second conductor; or, the 3 conductors of the coil assembly 550 surround the second conductor and the third conductor for the first conductor.

Referring to fig. 23, in the fifteenth embodiment, the U-phase winding includes 4 parallel-connected branch windings, the sub-branch winding (1 in this case) of each branch winding includes at least one coil set 550, the coil set 550 includes 3 conductors (first conductor, second conductor) located adjacent to each other in the circumferential direction of the stator core, the coil set 550 includes a first conductor located in the radial 5 th layer 10 slot and the 4 th layer 20 slot (pitch of the conductors is 10), the coil set 550 includes a second first conductor located in the radial 5 th layer 11 slot and the 4 th layer 21 slot (pitch of the conductors is 10) of the stator core, and the coil set 550 includes a second conductor located in the radial 5 th layer 12 slot and the 4 th layer 19 slot (pitch of the conductors is 7), i.e., the 3 conductors of the coil set 550 are two first conductors (first conductor and second first conductor) with the same pitch surrounding the second conductor.

Referring to fig. 24, in the sixteenth embodiment, the U-phase winding includes 4 parallel-connected branch windings, the sub-branch winding (1 in this case) of each branch winding includes at least one coil set 550, the coil set 550 includes 3 conductors (a first conductor, a first second conductor, and a second conductor) circumferentially adjacent to the stator core, the coil set 550 includes a first conductor located in a radial 5 th layer slot 10 and a radial 4 th layer slot 21 of the stator core (the pitch of the conductors is 11), the coil set 550 includes a first second conductor located in a radial 5 th layer slot 11 and a radial 4 th layer slot 19 of the stator core (the pitch of the conductors is 8), and the coil set 550 includes a second conductor located in a radial 5 th layer slot 12 and a radial 4 th layer 20 slot of the stator core (the pitch of the conductors is 8), that is, the first conductor surrounds two identical second conductors among the 3 conductors of the coil set 550.

Referring to fig. 25, in a seventeenth embodiment, the U-phase winding includes 4 parallel-connected branch windings, the sub-branch winding (1 in this case) of each branch winding includes at least one coil set 550, the coil set 550 includes 3 conductors (first conductor, second conductor, and third conductor) located adjacent to each other in the circumferential direction of the stator core, the coil set 550 includes a third conductor located in the stator core radial 5 th layer 19 th slot and 4 th layer 28 th slot (pitch of the conductors is 9), the coil set 550 includes a first conductor located in the stator core radial 5 th layer 20 th slot and 4 th layer 30 th slot (pitch of the conductors is 10), the coil set 550 includes a second conductor located in the stator core radial 5 th layer 21 th slot and 4 th layer 29 th slot (pitch of the conductors is 8), that is, the 3 conductors of the coil set 550 are first conductors surrounding the second conductor, and the third conductor is located on a side of the first conductor located inside the first slot of the first conductor and the second conductor or on a side of the second slot of the third conductor located away from the first conductor and the second conductor.

Referring to fig. 26, in an eighteenth embodiment, the U-phase winding includes 4 parallel-connected branch windings, the sub-branch winding (1 in this case) of each branch winding includes at least one coil set 550, the coil set 550 includes 3 conductors (first conductor, second conductor, and third conductor) located adjacent to each other in the circumferential direction of the stator core, the coil set 550 includes a first conductor located in the radial 5 th layer slot 19 and the 4 th layer slot 30 (the pitch of the conductor is 11), the coil set 550 includes a second conductor located in the radial 5 th layer slot 20 and the 4 th layer slot 29 of the stator core (the pitch of the conductor is 9), the coil set 550 includes a third conductor located in the radial 5 th layer slot 21 and the 4 th layer slot 28 of the stator core (the pitch of the conductor is 7), that is, the 3 conductors of the coil set 550 include a first conductor surrounding the second conductor, the second conductor surrounding the third conductor (the first conductor and the second conductor surrounding the third conductor), that is 3 conductors of the coil set 550 sequentially surrounding the radial 5 th layer slot 20 and the 4 th layer slot 29 of the conductor (the pitch of the conductor is 7).

Illustratively, as shown in fig. 11, in the third embodiment, the pitches of 3 identical-layer conductors located on one radial side (outer layer) of the stator core in each sub-branch winding are the full pitches; the pitch of the first and second of the 3 same-layer conductors located on the other side (inner layer) in the radial direction of the stator core in the branch winding is a long pitch, and the pitch of the third of the 3 same-layer conductors is a short pitch. Referring to fig. 11, in the third embodiment, two slots of a first one of 3 identical layer conductors located on a radial outer layer of the stator core in the first sub-branch winding are located in a radial 6 th layer 1 st slot and a radial 10 th slot of the stator core (i.e., the pitch of the identical layer conductor is a full pitch), two slots of a second one of the identical layer conductors are located in a radial 6 th layer 2 nd slot and a radial 11 th slot of the stator core (i.e., the pitch of the identical layer conductor is a full pitch), and two slots of a third one of the identical layer conductors are located in a radial 6 th layer 3 rd slot and a radial 12 th slot of the stator core (i.e., the pitch of the identical layer conductor is a full pitch); the two slots of the first same-layer conductor in the 3 same-layer conductors in the radial inner layer of the stator core are positioned in the radial 1 st-layer 46 th slot and the 56 th slot of the stator core (namely, the pitch of the same-layer conductor is long pitch), the two slots of the second same-layer conductor are positioned in the radial 1 st-layer 47 th slot and the 57 th slot of the stator core (namely, the pitch of the same-layer conductor is long pitch), the two slots of the third same-layer conductor are positioned in the radial 1 st-layer 48 th slot and the 55 th slot of the stator core (namely, the pitch of the same-layer conductor is short pitch), and correspondingly, the second sub-branch winding is similar to the first sub-branch winding in structure, and the difference is only that the pitches of the 3 same-layer conductors positioned in the radial outer layer of the stator core in each sub-branch winding are full pitch; the pitch of the first and second of the 3 same-layer conductors in the radial inner layer of the stator core in the branch winding is a long pitch, and the pitch of the third of the 3 same-layer conductors is a short pitch. Further, as shown in fig. 10, in the second embodiment, two slots of the first one of the 3 identical layer conductors located on the other side (outer layer) in the radial direction of the stator core are located inside 55 th and 65 th slots in the radial direction of the stator core (i.e., the pitch of the identical layer conductor is a long pitch), two slots of the second one of the 3 identical layer conductors are located inside 56 th and 66 th slots in the radial direction of the stator core (i.e., the pitch of the identical layer conductor is a long pitch), and two slots of the third one of the 3 identical layer conductors are located inside 57 th and 64 th slots in the radial direction of the stator core (i.e., the pitch of the identical layer conductor is a short pitch); the two slot interiors of the first one of the 3 identical layer conductors located on one radial side (inner layer) of the stator core are located in the 1 st and 37 th slots (i.e. the pitches of the identical layer conductors are the whole pitch) of the stator core in radial direction, the two slot interiors of the second one of the 3 identical layer conductors are located in the 29 st and 38 th slots (i.e. the pitches of the identical layer conductors) of the stator core in radial direction, the two slot interiors of the third one of the 3 identical layer conductors are located in the 30 st and 39 th slots (i.e. the pitches of the identical layer conductors are the whole pitch) of the stator core in radial direction, and correspondingly, the second one of the sub-branch windings is similar to the first one of the sub-branch windings in structure, except that the two slots are located in different slots, the radial side of the stator core can be located on the radial inner side of the stator core, or can be located on the radial outer side of the stator core, and in combination with fig. 7 and 10, in the first embodiment, the 3 identical layer conductors of the radial outer layer of the stator core can also be located in the radial inner layer of the stator core, and the 3 identical layer conductors of the radial inner layer of the stator core can also be located in the radial inner layer of the stator core, the radial conductor of the stator core can be located on the radial inner layer of the stator core, and the conductor of the radial inner layer of the stator core is formed in the radial layer conductor of the radial layer of the conductor is formed.

Alternatively, as shown in fig. 18 and 19, in the tenth and eleventh embodiments, two slots of the first one of the 3 identical layer conductors located on the radially outer layer of the stator core are located inside the first one of the 3 identical layer conductors in the radial direction of the stator core, 55 th and 65 th slots of the stator core (i.e., the pitch of the identical layer conductor is a long pitch), two slots of the second one of the identical layer conductors are located inside the first one of the 56 th and 66 th slots of the stator core (i.e., the pitch of the identical layer conductor is a long pitch), and two slots of the third one of the identical layer conductors are located inside the first one of the 57 th and 64 th slots of the stator core (i.e., the pitch of the identical layer conductor is a short pitch); the two slots of the first one of the 3 identical layer conductors located in the radial inner layer of the stator core are located in the radial 1 st layer slot 38 and 29 th slot 29 of the stator core (i.e. the pitch of the identical layer conductor is the full pitch), the two slots of the second one of the identical layer conductors are located in the radial 1 st layer slot 37 and 28 th slot of the stator core (i.e. the pitch of the identical layer conductor is the full pitch), the two slots of the third one of the identical layer conductors are located in the radial 1 st layer slot 36 and 27 th slot of the stator core (i.e. the pitch of the identical layer conductor is the full pitch), and accordingly, the second one of the sub-branch windings is similar to the first one except that the pitches of the 3 identical layer conductors located in the radial inner layer of the stator core in each of the sub-branch windings are the full pitch in the tenth embodiment and the eleventh embodiment; in the third embodiment, the pitches of the first and second identical layer conductors in the 3 identical layer conductors in the radial inner layer of each sub-branch winding are long pitches, and the pitches of the third identical layer conductor are short pitches, so that it can be seen that the 3 identical layer conductors in the radial outer layer of the stator core can be located in the radial inner layer of the stator core, the 3 identical layer conductors in the radial inner layer of the stator core can be located in the radial outer layer of the stator core, and the radial inner layer of the stator core can be located on one side close to the central axial direction of the stator core, or one side far away from the central axial direction of the stator core.

Alternatively, as shown in fig. 20, in the twelfth embodiment, two slots of the first one of the 3 identical layer conductors located on the radially outer layer of the stator core in the first sub-branch winding are located in the 55 th slot and the 65 th slot of the radial 6 th layer of the stator core (i.e., the pitch of the identical layer conductor is a long pitch), two slots of the second one of the identical layer conductors are located in the 2 nd slot and the 65 th slot of the radial 56 th layer of the stator core (i.e., the pitch of the identical layer conductor is a long pitch), and two slots of the third one of the identical layer conductors are located in the 57 th slot and the 64 th slot of the radial 6 th layer of the stator core (i.e., the pitch of the identical layer conductor is a short pitch); the two slots of the first same-layer conductor in the 3 same-layer conductors in the radial inner layer of the stator core are internally positioned in the 36 th slot and the 27 th slot in the radial direction of the stator core (i.e. the pitch of the same-layer conductor is the whole pitch), the two slots of the second same-layer conductor are internally positioned in the 35 th slot and the 26 th slot in the radial direction of the stator core (i.e. the pitch of the same-layer conductor is the whole pitch), the two slots of the third same-layer conductor are internally positioned in the 34 th slot and the 25 th slot in the radial direction of the stator core (i.e. the pitch of the same-layer conductor is the whole pitch), correspondingly, the second sub-branch winding is similar to the first sub-branch winding in structure, and is only positioned in different slots, namely the pitch of the 3 same-layer conductors in the radial inner layer of the stator core in each sub-branch winding is the whole pitch; in the third embodiment, the pitch of the first and second identical layer conductors in the 3 identical layer conductors in the radial inner layer of the stator core in each sub-branch winding is a long pitch, and the pitch of the third identical layer conductor in the 3 identical layer conductors in the radial inner layer of the stator core is a short pitch.

Illustratively, as shown in fig. 11, in the third embodiment, the pitches of 3 identical-layer conductors located on one radial side (outer layer) of the stator core in each sub-branch winding are the full pitches; the pitch of the first one of the 3 identical layer conductors located on the other side (inner layer) in the radial direction of the stator core in the sub-branch winding is a long pitch, and the pitches of the second and third identical layer conductors in the 3 identical layer conductors are short pitches.

Referring to fig. 11, in the third embodiment, two slots of one of 3 identical layer conductors located on the radial outer layer of the stator core in the first sub-branch winding are located in the radial 6 th 55 th slot and 64 th slot of the stator core (i.e. the pitch of the identical layer conductor is the full pitch), two slots of the other identical layer conductor are located in the radial 56 th slot and 65 th slot of the stator core (i.e. the pitch of the identical layer conductor is the full pitch), and two slots of the third identical layer conductor are located in the radial 57 th slot and 66 th slot of the stator core (i.e. the pitch of the identical layer conductor is the full pitch); two slots of one identical layer conductor in 3 identical layer conductors positioned in the radial inner layer of the stator core are positioned in the radial 1 st layer 28 th slot and 39 th slot of the stator core (namely, the pitch of the identical layer conductor is long pitch), two slots of the other identical layer conductor are positioned in the radial 1 st layer 29 th slot and 37 th slot of the stator core (namely, the pitch of the identical layer conductor is short pitch), two slots of the third identical layer conductor are positioned in the radial 1 st layer 30 th slot and 38 th slot of the stator core (namely, the pitch of the identical layer conductor is short pitch), correspondingly, the second sub-branch winding is similar to the first sub-branch winding in structure, and the difference is only that the pitches of the 3 identical layer conductors positioned in the radial outer layer of the stator core in each sub-branch winding are whole pitch; the pitch of the first one of the 3 same-layer conductors positioned in the radial inner layer of the stator core in the sub-branch winding is a long pitch, and the pitches of the second and third one of the 3 same-layer conductors are short pitches. Illustratively, as shown in fig. 12, in the fourth embodiment, the pitches of 3 identical-layer conductors located on one radial side (outer layer) of the stator core in each sub-branch winding are the full pitches; the pitch of the first one of the 3 same-layer conductors positioned on the other radial side (inner layer) of the stator core in the branch winding is a long pitch, the pitch of the second one of the 3 same-layer conductors is a whole pitch, and the pitch of the third one of the 3 same-layer conductors is a short pitch.

In the fourth embodiment, as shown in fig. 12, two slots of a first one of 3 identical layer conductors located on the radial outer layer of the stator core in the first sub-branch winding are located in the radial 6 th 55 th slot and 64 th slot of the stator core (i.e., the pitch of the identical layer conductor is the full pitch), two slots of the second identical layer conductor are located in the radial 56 th slot and 65 th slot of the stator core (i.e., the pitch of the identical layer conductor is the full pitch), and two slots of the third identical layer conductor are located in the radial 6 th 57 th slot and 66 th slot of the stator core (i.e., the pitch of the identical layer conductor is the full pitch); two slots of a first one of the 3 identical layer conductors located in the radial inner layer of the stator core are located in the radial 1 st layer 28 th slot and the 38 th slot of the stator core (i.e. the pitch of the identical layer conductor is long pitch), two slots of a third identical layer conductor are located in the radial 1 st layer 29 th slot and the 37 th slot of the stator core (i.e. the pitch of the identical layer conductor is short pitch), the two slots of the second same-layer conductor are positioned in the 1 st layer 30 th slot and the 39 th slot in the radial direction of the stator core (namely, the pitch of the same-layer conductor is the whole pitch), correspondingly, the second sub-branch winding is similar to the first sub-branch winding in structure, and the difference is only that the pitches of the 3 same-layer conductors positioned on the radial outer layer of the stator core in different slots are the whole pitch; the pitch of the first same-layer conductor in the 3 same-layer conductors positioned in the radial inner layer of the stator core in the branch winding is a long pitch, the pitch of the second same-layer conductor is a whole pitch, and the pitch of the third same-layer conductor is a short pitch.

Alternatively, as shown in fig. 13, in the fifth embodiment, two slot interiors of a first one of the 3 identical layer conductors located on the outer layer in the radial direction (one side) of the stator core are located in the 55 th slot and the 66 th slot in the radial direction (i.e., the pitch of the identical layer conductor is a long pitch) of the stator core, two slot interiors of the second identical layer conductor are located in the 56 th slot and the 65 th slot in the radial direction (i.e., the pitch of the identical layer conductor is a full pitch) of the stator core, and two slot interiors of the third identical layer conductor are located in the 57 th slot and the 64 th slot in the radial direction (i.e., the pitch of the identical layer conductor is a short pitch) of the stator core; the two slots of the first one of the 3 identical layer conductors located on the other side (inner layer) of the stator core in the radial direction of the sub-branch winding are located in the 1 st and 37 th slots of the stator core in the radial direction (i.e., the pitches of the identical layer conductors are full pitches), the two slots of the second one of the identical layer conductors are located in the 29 st and 38 th slots of the stator core in the radial direction (i.e., the pitches of the identical layer conductors are full pitches), the two slots of the third one of the identical layer conductors are located in the 30 st and 39 th slots of the stator core in the radial direction (i.e., the pitches of the identical layer conductors are full pitches), and correspondingly, the second sub-branch winding is similar to the first sub-branch winding in structure except that the pitches of the first and second one of the 3 identical layer conductors located on the radial outer layer of the stator core in each sub-branch winding are long pitches, and the pitch of the third one of the 3 identical layer conductors in the radial outer layer of the stator core is short pitch.

Illustratively, as shown in fig. 14, in the sixth embodiment, the pitch of the first one of the 3 identical layer conductors located on one radial side (outer layer) of the stator core in each of the sub-branch windings is a long pitch and the pitch of the second one of the 3 identical layer conductors is a short pitch; the pitch of the first one of the 3 same-layer conductors located on the other side (inner layer) in the radial direction of the stator core in the sub-branch winding is a long pitch and the pitch of the second one of the 3 same-layer conductors is a short pitch.

In the sixth embodiment, as shown in fig. 14, two slots of a first one of 3 identical layer conductors located on the radial outer layer of the stator core in the first sub-branch winding are located in the stator core radial 6 th 37 th slot and 47 th slot (i.e., the pitch of the identical layer conductor is a long pitch), two slots of a third one of the identical layer conductors are located in the stator core radial 6 th 38 th slot and 48 th slot (i.e., the pitch of the identical layer conductor is a long pitch), and two slots of a second one of the identical layer conductors are located in the stator core radial 6 th 39 th slot and 46 th slot (i.e., the pitch of the identical layer conductor is a short pitch); the two slots of the first same-layer conductor in the 3 same-layer conductors in the radial inner layer of the stator core are positioned in the 1 st layer 10 th slot and the 20 th slot in the radial direction of the stator core (namely, the pitch of the same-layer conductor is long pitch), the two slots of the third same-layer conductor are positioned in the 11 st layer 11 th slot and the 21 st slot in the radial direction of the stator core (namely, the pitch of the same-layer conductor is long pitch), the two slots of the second same-layer conductor are positioned in the 12 th slot and the 19 th slot in the radial direction of the stator core (namely, the pitch of the same-layer conductor is short pitch), and correspondingly, the second sub-branch winding is similar to the first sub-branch winding in structure, and is only different in that the pitch of the first same-layer conductor in the 3 same-layer conductors in the radial outer layer of the stator core in each sub-branch winding is long pitch and the pitch of the second same-layer conductor is short pitch; the pitch of the first same-layer conductor in the 3 same-layer conductors positioned on the radial inner layer of the stator core in the sub-branch winding is long pitch, and the pitch of the second same-layer conductor is short pitch.

Illustratively, as shown in fig. 15, in the seventh embodiment, the pitch of the first one of the 3 same-layer conductors located radially outward of the stator core in each of the sub-branch windings is a long pitch, and the pitch of the second one of the 3 same-layer conductors is a short pitch; the pitch of the first same-layer conductor in the 3 same-layer conductors positioned on the radial inner layer of the stator core in the sub-branch winding is a long pitch, the pitch of the second same-layer conductor is a whole pitch, and the pitch of the third same-layer conductor is a short pitch.

In the seventh embodiment, as shown in fig. 15, two slots of the first one of the 3 identical layer conductors located on the radial outer layer of the stator core in the first sub-branch winding are located in the radial 6 th 55 th slot and 65 th slot of the stator core (i.e., the pitch of the identical layer conductor is a long pitch), two slots of the third one of the identical layer conductors are located in the radial 6 th 56 th slot and 66 th slot of the stator core (i.e., the pitch of the identical layer conductor is a long pitch), and two slots of the second one of the identical layer conductors are located in the radial 6 th 57 th slot and 64 th slot of the stator core (i.e., the pitch of the identical layer conductor is a short pitch); the two slots of the first same-layer conductor in the 3 same-layer conductors in the radial inner layer of the stator core are positioned in the radial 1 st-layer 28 th slot and the 39 th slot of the stator core (namely, the pitch of the same-layer conductor is long pitch), the two slots of the second same-layer conductor are positioned in the radial 1 st-layer 29 th slot and the 38 th slot of the stator core (namely, the pitch of the same-layer conductor is full pitch), the two slots of the third same-layer conductor are positioned in the radial 1 st-layer 30 th slot and the 37 th slot of the stator core (namely, the pitch of the same-layer conductor is short pitch), and correspondingly, the second sub-branch winding is similar to the first sub-branch winding in structure, and is only different in that the pitch of the first same-layer conductor in the 3 same-layer conductors in the radial outer layer of the stator core in each sub-branch winding is long pitch, and the pitch of the second same-layer conductor is short pitch; the pitch of the first same-layer conductor in the 3 same-layer conductors positioned in the radial inner layer of the stator core in the branch winding is a long pitch, the pitch of the second same-layer conductor is a whole pitch, and the pitch of the third same-layer conductor is a short pitch.

Illustratively, as shown in fig. 16, in the eighth embodiment, a first one of 3 identical layer conductors located on one radial side (outer layer) of the stator core in each sub-branch winding is a long pitch, a second one is a full pitch, and a third one is a short pitch; the first one of the 3 same-layer conductors positioned on the other side (inner layer) of the radial direction of the stator core in the sub-branch winding is long-pitch, the second one is full-pitch, and the third one is short-pitch.

Referring to fig. 16, in the eighth embodiment, two slots of a first one of 3 identical layer conductors located on the radial outer layer of the stator core in the first sub-branch winding are located in the radial 6 th 19 th and 29 th slots of the stator core (i.e., the pitch of the identical layer conductor is a long pitch), two slots of a third one of the identical layer conductors are located in the radial 6 th 20 th and 28 th slots of the stator core (i.e., the pitch of the identical layer conductor is a short pitch), and two slots of a second one of the identical layer conductors are located in the radial 6 th 21 th and 30 th slots of the stator core (i.e., the pitch of the identical layer conductor is a full pitch); two slots of a second identical layer conductor in 3 identical layer conductors positioned in the radial inner layer of the stator core are positioned in a 1 st layer 1 st slot and a 64 th slot in the radial direction of the stator core (namely, the pitch of the identical layer conductor is the whole pitch), two slots of a third identical layer conductor are positioned in a 2 nd layer 2 nd slot and a 66 th slot in the radial direction of the stator core (namely, the pitch of the identical layer conductor is the short pitch), two slots of the first identical layer conductor are positioned in a 3 rd slot and a 65 th slot in the radial direction of the stator core (namely, the pitch of the identical layer conductor is the long pitch), correspondingly, the second sub-branch winding is similar to the first sub-branch winding in structure, and is only different in that the first identical layer conductor in 3 identical layer conductors positioned in the radial outer layer of the stator core in each sub-branch winding is the long pitch, the second identical layer conductor is the whole pitch, and the third identical layer conductor is the short pitch; the first one of the 3 same-layer conductors positioned in the radial inner layer of the stator core in the branch winding is long-pitch, the second one is full-pitch, and the third one is short-pitch.

Alternatively, as shown in fig. 17, in the ninth embodiment, two slots of the first one of the 3 identical layer conductors located on the radially outer layer of the stator core in each of the sub-branch windings are located in the stator core radial 6 th layer 19 th slot and the 30 th slot (i.e., the pitch of the identical layer conductor is a long pitch), two slots of the second one of the identical layer conductors are located in the stator core radial 6 th layer 20 th slot and the 29 th slot (i.e., the pitch of the identical layer conductor is a full pitch), and two slots of the third one of the identical layer conductors are located in the stator core radial 6 th layer 21 th slot and the 28 th slot (i.e., the pitch of the identical layer conductor is a short pitch); the two slots of one of the 3 identical layer conductors positioned in the radial inner layer of the stator core are positioned in the radial 1 st layer 64 th slot and the 1 st slot of the stator core (namely, the pitch of the identical layer conductor is the whole pitch), the two slots of the other identical layer conductor are positioned in the radial 1 st layer 65 th slot and the 3 rd slot of the stator core (namely, the pitch of the identical layer conductor is the long pitch), the two slots of the third identical layer conductor are positioned in the radial 1 st layer 66 th slot and the 2 nd slot of the stator core (namely, the pitch of the identical layer conductor is the short pitch), correspondingly, the second sub-branch winding is similar to the first sub-branch winding in structure, and the difference is only that the first identical layer conductor in the 3 identical layer conductors positioned in the radial outer layer of the stator core in each sub-branch winding is the long pitch, the second identical layer conductor is the whole pitch, and the third identical layer conductor is the short pitch; the first one of the 3 same-layer conductors positioned in the radial inner layer of the stator core in the branch winding is long-pitch, the second one is full-pitch, and the third one is short-pitch.

In connection with fig. 1 to 17 and fig. 27 to 28, in the first to ninth embodiments, the circumferential wave-wound connection is made between each conductor in each leg winding of the U-phase winding, specifically, in connection with fig. 27 and 28, the first conductor of the first leg winding U1-U2 of the U-phase winding is located at the slot outer end connection lead end U1 of the slot inner connection of the stator core 6 th layer 1 slot, the slot outer end of the conductor located at the slot inner connection of the stator core radial 6 th layer 11 slot is located at the slot outer end of the slot inner connection of the stator core radial 4 th layer clockwise across 4.5 slots and then is located at the slot inner connection of the second conductor located at the stator core radial 5 th layer 20 slots counterclockwise across 4.5 slots (the pitch of the first conductor to the second conductor is 9 in the stator core radial 5 th layer and the radially adjacent two layers), the slot outer end of the second conductor located at the slot inner connection of the stator core radial 4 th layer 29 slot is located at the slot outer end of the stator core radial 4 th layer 4 and then located at the slot inner connection of the third conductor is located at the third layer 3.5 radially adjacent layer 3 in the radial 4 th layer 3 along the stator core radial 4 th layer 4.5 slots, the third conductor is located at the slot outer end of the slot inner connection of the stator core radial layer 2 and 47 slots and is located at the slot inner connection of the stator core radial layer 1 and 56 slots along the stator core radial layer 2 and crosses 4.5 slots clockwise, and then is located at the slot inner connection of the stator core radial layer 1 and 56 slots along the stator core radial layer 1 and crosses 4.5 slots counterclockwise (the third conductor is located at the pitch 9 of the connection of the fourth conductor at the radial layer 3 and 2 adjacent slots), the slot outer end of the slot inner connection of the fourth conductor located at the stator core radial layer 1 and 47 slots is located at the slot outer end of the fifth conductor located at the radial layer 3 and 4.5 slots counterclockwise after crossing 4.5 slots along the radial layer 1 and 4.5 slots, and then is located at the slot inner connection of the fifth conductor located at the radial layer 2 and 38 slots clockwise after crossing 4.5 slots along the radial layer 2 slots (the pitch 9 of the connection of the fourth conductor at the radial layer 1 and 2 adjacent slots along the radial layer 3 and the radial layer 2 adjacent slots of the fourth conductor is located at the radial layer 1 and 9) of the stator core radial layer 2 and the fifth conductor is located at the slot outer end of the slot inner connection of the fifth conductor located at the radial layer 2 and 4.5 slots clockwise after crossing 4.5 slots along the radial layer 2 and 3 slots, the sixth conductor is positioned at the inner part of the stator core radial 5 th layer 11 slot and connected with the seventh conductor after crossing 4.5 slots anticlockwise along the stator core radial 5 th layer, and is positioned at the inner part of the stator core radial 6 th layer 2 slot and connected with the seventh conductor after crossing 4.5 slots clockwise along the stator core radial 6 th layer (the sixth conductor is positioned at 9 at the connecting pitch of the seventh conductor along the stator core radial 5 th layer and the radially adjacent two layers of the 6 th layer), the seventh conductor is positioned at the inner part of the stator core radial 6 th layer 12 slot and connected with the eighth conductor after crossing 4.5 slots anticlockwise along the stator core radial 6 th layer, and connected with the eighth conductor after crossing 4.5 slots anticlockwise along the stator core radial 5 th layer (the seventh conductor is positioned at 9 at the connecting pitch of the seventh conductor along the stator core radial 5 th layer and the radially adjacent two layers of the 6 th layer), the seventh conductor is positioned at the inner part of the stator core radial 4 th layer 30 slot and connected with the eighth conductor after crossing 4.5 slots anticlockwise along the stator core radial 5 th layer, and connected with the eighth conductor is positioned at the inner part of the stator core radial 5 th layer 2 slot along the radially adjacent slot along the stator core radial 5 th layer, and connected with the eighth conductor after crossing 4.5 slots along the radial 5 slots, and connected with the eighth conductor at the connecting pitch of the eighth conductor along the radially adjacent slot along the stator core radial 5 slot along the radial 5 th layer 4 slot and along the radial 5 slot, the ninth conductor is located at the slot outer end of the slot inner connection of the slot 48 of the radial layer 2 of the stator core and is located at the slot inner connection of the slot 57 of the radial layer 1 of the stator core and is located at the slot outer end of the slot inner connection of the slot 57 of the radial layer 1 of the stator core and is located at the slot 4.5 of the slot 1 of the radial layer 1 of the stator core after being located at the slot 2 of the radial layer 2 of the stator core and is located at 4.5 of the slot, the ninth conductor is located at the slot 9 of the slot inner connection of the slot 1 of the radial layer 48 of the stator core and is located at the slot outer end of the slot inner connection of the slot 39 of the radial layer 2 of the stator core and is located at the slot 4.5 of the slot 1 of the radial layer 2 of the stator core after being located at the slot 1 of the radial layer 1 of the stator core and is located at the slot inner connection of the slot 9 of the slot 1 of the radial layer 2 of the tenth conductor and is located at the slot 2 of the slot clockwise of the radial layer 2 of the stator core (the pitch 9 of the tenth conductor is located at the slot 1 of the slot of the radial layer 2 of the stator core and is located at the slot of the tenth conductor and is located at the slot 9 of the slot, the eleventh conductor is positioned at the outer end part of the slot internal connection of the 30 th slot of the 3 rd layer of the radial direction of the stator core and is positioned at the outer end part of the slot internal connection of the 21 st slot of the 4 th layer of the radial direction of the stator core and is positioned at the 4.5 slots along the 2 nd layer of the radial direction of the stator core after crossing 4.5 slots along the 3 rd layer of the radial direction of the stator core anticlockwise, the pitch of the connection of the eleventh conductor with the twelfth conductor along the 3 rd layer and the 4 th layer of the radial direction of the stator core is 9), the twelfth conductor is located at the slot outer end of the slot inner connection of the stator core radial 5 th layer 12 slot and is located at the slot inner connection of the stator core radial 6 th layer 3 slot along the stator core radial 6 th layer clockwise crossing 4.5 slots (the twelfth conductor is located at the pitch 9 of the connection of the thirteenth conductor at the stator core radial 5 th layer and the 6 th layer radial adjacent two layers), the thirteenth conductor is located at the slot outer end of the slot inner connection of the stator core radial 6 th layer 10 slot and is located at the slot outer end of the thirteenth conductor at the stator core radial 5 th layer counterclockwise crossing 4.5 slots after being located at the stator core radial 5 th layer counterclockwise crossing 4.5 slots (the pitch 9 of the connection of the thirteenth conductor at the stator core radial 5 th layer and the stator core radial adjacent two layers is located at the thirteenth conductor), the thirteenth conductor is located at the slot outer end of the slot inner connection of the stator core radial 4 th layer 10 slot and is located at the stator core radial 5 th layer counterclockwise crossing 4.5 slots after being located at the stator core radial 5 th layer counterclockwise crossing 4.5 slots and is located at the slot inner connection of the thirteenth conductor at the stator core radial 5 th layer 3 th layer counterclockwise crossing 4.5 slots (the pitch 9 of the thirteenth conductor is located at the stator core radial 5 th layer and the connection of the slot inner connection of the thirteenth conductor at the stator core radial 4 th layer radial 5 th layer radial adjacent two layers along the stator core radial 4 th layer radial adjacent two layers), the fifteenth conductor is positioned at the inner part of the stator core radial layer 2 and 46 slots, the outer end part of the slot which is connected with the inner part of the slot which is positioned at the radial layer 1 and 55 slots of the stator core is positioned at the inner part of the slot which is positioned at the radial layer 1 and 55 slots of the stator core along the stator core after crossing 4.5 slots clockwise along the radial layer 2 of the stator core, the outer end part of the slot which is positioned at the inner part of the slot which is positioned at the radial layer 1 and 46 slots of the stator core is positioned at the outer part of the slot which is positioned at the radial layer 4 and 9 of the outer part of the slot which is positioned at the radial layer 4 and 4, and the outer end part of the slot which is connected with the seventeenth conductor which is positioned at the inner part of the slot which is positioned at the radial layer 2 and 37 slots of the stator core is positioned at the radial layer 2 of the stator core is positioned at the clockwise along the radial layer 2 of the stator core (the pitch 9 of the sixteenth conductor which is connected with the outer end part of the slot which is positioned at the radial layer 1 and 2 of the stator core in the radial layer 1 and 2 of the radial layer 4.5 slots counterclockwise along the radial layer 1 and 9 of the stator core), the seventeenth conductor is positioned at the outer end part of the slot which is positioned at the radial layer 4.5 slots which is positioned at the radial layer 2 and 4.5 slots of the radial layer 4 along the stator core which is positioned at the radial layer 3 of the stator core, the outer part of the slot which is positioned at the radial layer 4 and 4.5 radially adjacent to the stator adjacent to each other slot along the radial layer 4 of the stator core, the eighteenth conductor is located at the slot outer end part of the slot inner connection of the slot 10 of the radial 5 th layer of the stator core and is located at the slot 1 of the radial 4 th layer of the stator core after crossing 4.5 slots anticlockwise along the radial 5 th layer of the stator core, the slot outer end part of the slot inner connection of the nineteenth conductor and the slot 1 of the radial 4 th layer of the stator core crosses 4.5 slots clockwise along the radial 4 th layer of the stator core (the pitch of the eighteenth conductor connected with the nineteenth conductor along the radial 5 th layer and the radial 4 th layer of the stator core is 9), the slot outer end part of the slot inner connection of the nineteenth conductor and the slot 64 of the radial 5 th layer of the stator core crosses 4.5 slots anticlockwise along the radial 6 th layer of the stator core after crossing 4.5 slots clockwise along the radial 5 th layer of the stator core and then is located at the slot 55 of the twentieth conductor (the pitch of the nineteenth conductor connected with the twenty th conductor along the radial 5 th layer and the radial 6 th layer of the stator core is 9), the twentieth conductor is positioned at the outer end part of the slot internal connection of the 65 th slot of the 6 th layer of the radial direction of the stator core and is positioned at the outer end part of the slot internal connection of the 2 nd slot of the 5 th layer of the radial direction of the stator core and is positioned at the 4.5 slots along the 5 th layer of the radial direction of the stator core after crossing 4.5 slots along the 6 th layer of the radial direction of the stator core clockwise (the pitch of the twenty-first conductor connected with the twenty-first conductor along the 6 th layer and the 5 th layer of the radial direction of the stator core is 9), the twenty-first conductor is located at the slot outer end of the slot inner connection of the slot 11 of the layer 4 in the radial direction of the stator core and is located at the slot inner connection of the slot 20 of the layer 3 in the radial direction of the stator core and is located at the slot outer end of the slot inner connection of the slot 20 of the layer 3 in the radial direction of the stator core and is located at the slot 4.5 after crossing 4.5 slots clockwise in the radial direction of the stator core, the twenty-first conductor is located at the slot outer end of the slot inner connection of the slot 29 of the layer 2 in the radial direction of the stator core and is located at the slot inner connection of the slot 38 of the layer 1 in the radial direction of the stator core and is located at the slot 4.5 slots clockwise in the radial direction of the stator core (the pitch of the twenty-second conductor is located at the slot 9 in the radial direction of the layer 1 and the layer 2 in the radial direction of the adjacent layer 2 in the radial direction of the stator core) after crossing 4.5 slots clockwise in the radial direction of the layer 2 in the radial direction of the stator core, the twenty-third conductor is positioned at the outer end part of the slot internal connection of the 29 th slot of the 1 st layer in the radial direction of the stator core and spans 4.5 slots anticlockwise along the 1 st layer in the radial direction of the stator core, then the twenty-fourth conductor is positioned at the outer end part of the slot internal connection of the 20 th slot of the 2 nd layer in the radial direction of the stator core and spans 4.5 slots clockwise along the 2 nd layer in the radial direction of the stator core (the pitch of the connection of the twenty-third conductor and the twenty-fourth conductor along the 1 st layer and the 2 nd layer in the radial direction of the stator core is 9), the twenty-fourth conductor is positioned at the outer end part of the slot internal connection of the 11 th slot of the 3 rd layer of the radial direction of the stator core and is positioned at the outer end part of the slot internal connection of the 2 nd slot of the 4 th layer of the radial direction of the stator core and is positioned at the 4.5 slots along the 4 th layer of the radial direction of the stator core after crossing 4.5 slots along the 3 rd layer of the radial direction of the stator core anticlockwise, the pitch of the connection of the twenty-fourth conductor at the twenty-fifth conductor along the 3 rd layer of the radial direction of the stator core and the adjacent two layers of the 4 th layer of the radial direction of the stator core is 9), the outer end part of the twenty-fifth conductor, which is connected with the inner part of the slot of the 65 th layer of the stator core, is positioned at the inner part of the slot of the 56 th layer of the radial direction of the stator core and spans 4.5 slots anticlockwise along the 6 th layer of the radial direction of the stator core after spanning 4.5 slots along the 5 th layer of the radial direction of the stator core, the outer end part of the twenty-sixth conductor, which is connected with the twenty-fifth conductor and the twenty-sixth conductor along the 5 th layer and the 6 th layer of the radial direction of the stator core, spans 4.5 slots anticlockwise along the 6 th layer of the radial direction of the stator core (the pitch of the connection between the twenty-fifth conductor and the twenty-sixth conductor is 9), the outer end part of the twenty-sixth conductor, which is connected with the inner part of the 66 th slot of the 6 th layer of the radial direction of the stator core, spans 4.5 slots clockwise along the 6 th layer of the radial direction of the stator core, and then spans 4.5 slots anticlockwise along the 5 th layer of the radial direction of the stator core with the outer end part of the twenty-seventh conductor, which is connected with the inner part of the 3 rd slot of the radial direction of the stator core (the pitch of the twenty-sixth conductor, which is connected with the twenty-seventh conductor, is 9 along the 6 th layer and the 5 th layer of the radial direction of the stator core), the twenty seventh conductor is positioned at the outer end part of the slot internal connection of the 12 th slot of the 4 th layer of the radial direction of the stator core and spans 4.5 slots clockwise along the 4 th layer of the radial direction of the stator core, then the twenty eighth conductor spans 4.5 slots anticlockwise along the 3 rd layer of the radial direction of the stator core with the outer end part of the slot internal connection of the 21 st slot of the radial direction of the eighth conductor (the pitch of the twenty seventh conductor which is connected with the twenty eighth conductor along the 3 rd layer and the 4 th layer of the radial direction of the stator core is 9), the twenty eighth conductor is located at the slot outer end of the slot inner connection of the slot 2 nd layer 30 th in the radial direction of the stator core and is located at the slot inner connection of the slot 39 th in the radial direction of the stator core after crossing 4.5 slots anticlockwise along the radial direction 2 of the stator core, and the twenty ninth conductor is located at the slot outer end of the slot inner connection of the slot 39 th in the radial direction 1 of the stator core and crosses 4.5 slots clockwise along the radial direction 1 of the stator core (the pitch of the twenty eighth conductor connected at the thirty ninth conductors is 9 along the radial direction 1 of the stator core and the radial direction 2 of the layer), the twenty ninth conductor is located at the slot outer end of the slot inner connection of the slot 30 th in the radial direction 1 of the stator core and is located at the slot 21 st conductor after crossing 4.5 slots anticlockwise along the radial direction 1 of the stator core and crosses 4.5 slots clockwise along the radial direction 2 of the stator core (the pitch of the thirty conductors connected at the radial direction 1 of the layer and the radial direction 2 of the layer is 9), the thirty-first conductor is located at the slot outer end of the slot inner connection of the slot 3 rd layer in the radial direction of the stator core and is located at the slot inner connection of the slot 3 rd layer in the radial direction of the stator core after crossing 4.5 slots anticlockwise along the slot 3 rd layer in the radial direction of the stator core, and then is located at the slot outer end of the slot inner connection of the slot 3 rd layer in the radial direction of the stator core and is crossed 4.5 slots clockwise along the slot 4 th layer in the radial direction of the stator core (the pitch of the thirty-first conductor connected with the thirty-second conductor is 9 along the radial direction of the slot 5 th layer and the radial direction of the slot 6 th layer), the slot outer end of the slot inner connection of the thirty-first conductor located at the slot 66 th layer in the radial direction of the stator core is crossed 4.5 slots anticlockwise along the slot 5 th layer in the radial direction of the stator core (the pitch of the thirty-first conductor connected with the slot 9 along the radial direction of the slot 5 th layer and the radial direction of the slot 6 th layer is crossed 4.5 slots along the radial direction of the stator core), the thirty-second conductor is positioned at the outer end part of the slot internal connection of the 64 th slot of the 6 th layer of the radial direction of the stator core, and after crossing 4.5 slots clockwise along the 6 th layer of the radial direction of the stator core, the thirty-third conductor is positioned at the outer end part of the slot internal connection of the 1 st slot of the 5 th layer of the radial direction of the stator core, crossing 4.5 slots anticlockwise along the 5 th layer of the radial direction of the stator core (the pitch of the thirty-second conductor connected with the thirty-third conductor along the 6 th layer and the 5 th layer of the radial direction of the stator core is 9), the thirty-third conductor is located at the slot outer end of the slot inner connection of the slot 10 of the layer 4 in the radial direction of the stator core and is located at the slot inner connection of the slot 19 of the layer 3 in the radial direction of the stator core and is located at the slot outer end of the slot inner connection of the slot 19 of the layer 3 in the radial direction of the stator core and is located at the slot 4.5 after crossing 4.5 slots clockwise along the radial direction of the stator core, the thirty-third conductor is located at the slot outer end of the slot inner connection of the slot 28 of the layer 2 in the radial direction of the stator core and is located at the slot inner connection of the slot 37 of the layer 1 in the radial direction of the stator core and is located at the slot 4.5 slots clockwise along the radial direction of the stator core after crossing 4.5 slots clockwise along the radial direction of the layer 2 of the stator core (the pitch of the thirty-fourth conductor is located at the slot 9 along the radial direction of the layer 1 and the layer 2 of the radial direction of the thirty-fifth conductor), the thirty-fifth conductor is positioned at the outer end part of the slot internal connection of the slot of the layer 1 and the slot 28 in the radial direction of the stator core, spans 4.5 slots anticlockwise along the radial direction of the stator core, and then spans 4.5 slots clockwise along the radial direction of the stator core with the outer end part of the slot internal connection of the slot of the layer 2 and the slot 19 in the radial direction of the stator core (the pitch of the thirty-fifth conductor connected with the thirty-sixth conductor along the radial direction of the stator core is 9) and is positioned at the outer end part of the slot internal connection of the slot of the layer 3 and the slot 10 in the radial direction of the stator core, and is connected with the outlet end U2 of the branch; the corresponding outer end part of the slot in the radial 6 th layer of the stator core at the branch winding spans 4.5 slot distances in the same direction (clockwise direction) at the 6 th layer, the corresponding outer end part of the slot in the radial 5 th layer of the stator core spans 4.5 slot distances in the same direction (anticlockwise direction) at the 5 th layer (of course, the pitch formed by connecting the outer end parts of the slots of the radially adjacent two layers is 9), the corresponding outer end part of the slot in the radial 4 th layer of the stator core spans 4.5 slot distances in the same direction (clockwise direction) at the 4 th layer, the outer end portions of the slots corresponding to the slots on the 3 rd layer in the radial direction of the stator core span 4.5 slot pitches in the 3 rd layer in the same direction (anticlockwise direction) (of course, the pitch formed by the connection between the outer end portions of the slots on the radially adjacent two layers is 9), the outer end portions of the slots corresponding to the slots on the 2 nd layer in the radial direction of the stator core span 4.5 slot pitches in the 2 nd layer in the same direction (clockwise direction), and the outer end portions of the slots corresponding to the slots on the 1 st layer in the radial direction of the stator core span 4.5 slot pitches in the 1 st layer in the same direction (anticlockwise direction) (of course, the pitch formed by the connection between the outer end portions of the slots on the radially adjacent two layers is 9).

In connection with fig. 20, fig. 29 to fig. 30, in the twelfth embodiment, each conductor in each leg winding of the U-phase winding is connected by circumferential wave winding, specifically, in connection with fig. 29, fig. 30, the first conductor of the first leg winding U1-U2 of the U-phase winding is located at the slot outer end connection lead end U1 of the inner connection of the slot of the stator core 6 th layer 1, the slot outer end of the conductor located at the slot inner connection of the stator core radial 6 th layer 11 slot is located at the slot outer end of the stator core radial 4 layer crossing 4 slots clockwise and then connected to the slot outer end of the second conductor located at the slot inner connection of the stator core radial 5 th layer 19 slot is located at the slot radial 5 th layer counterclockwise (the pitch of the first conductor to the second conductor is 8 between the first conductor and the second conductor located at the radially 5 th layer and 6 th layer adjacent two layers of the stator core), the slot outer end of the second conductor located at the inner connection of the slot of the stator core radial 4 layer 28 slot is located at the stator core radial 4 layer crossing 4 slots clockwise and then connected to the third conductor located at the radially 3 layer 6 layer adjacent to the slot is located at the slot outer end of the third conductor layer 3 along the radial 4 layer radial 4, the third conductor is located at the slot outer end of the slot inner connection of the stator core radial layer 2 slot 45 and is located at the slot inner connection of the stator core radial layer 1 slot 53 along the stator core radial layer 1 slot after crossing 4 slots clockwise, and the slot outer end of the fourth conductor is located at the slot inner connection of the stator core radial layer 2 slot 4 along the stator core radial layer 1 slot counterclockwise (the third conductor is 8 at the pitch of the connection of the fourth conductor at the radial layer 2 and the adjacent layer 2), the slot outer end of the fourth conductor is located at the slot inner connection of the stator core radial layer 1 slot 44 along the stator core radial layer 1 counterclockwise and crosses 4 slots, and then is connected with the slot outer end of the fifth conductor located at the slot inner connection of the stator core radial layer 2 slot 36 along the radial layer 2 counterclockwise (the fourth conductor is 8 at the connection of the fifth conductor at the radial layer 1 and the adjacent layer 2) along the stator core radial layer 1 and the adjacent layer 2), the fifth conductor is located at the slot outer end of the slot inner connection of the stator core radial layer 3 slot 3 along the radial layer 3 and the adjacent layer 4 is located at the radial layer 4 of the radial layer 4 and the radial layer 19 of the slot along the radial layer 4, the sixth conductor is located at the slot outer end part of the slot inner connection of the slot 10 of the radial 5 th layer of the stator core and is located at the slot inner connection of the slot 2 of the radial 6 th layer of the stator core after crossing 4 slots anticlockwise along the radial 5 th layer of the stator core, the slot outer end part of the slot inner connection of the seventh conductor is located at the slot 6 of the radial 6 th layer of the stator core and is clockwise crossed at 4 slots along the radial 6 th layer of the stator core (the pitch of the connection of the sixth conductor and the seventh conductor along the radial 5 th layer and the radial 6 th layer of the stator core is 8), the slot outer end part of the slot inner connection of the seventh conductor is located at the slot 12 of the radial 6 th layer of the stator core and is located at the slot 20 of the radial 5 th layer of the stator core after crossing 4 slots anticlockwise along the radial 6 th layer of the stator core and is located at the slot outer end part of the connection of the eighth conductor along the radial 5 th layer of the stator core and is anticlockwise crossed at 4 slots (the pitch of the seventh conductor and the connection of the eighth conductor and the eighth conductor along the radial 5 th layer and the radial adjacent two layers of the stator core is 8), the eighth conductor is positioned at the outer end part of the inner groove of the 29 th layer of the radial direction groove of the stator core and is connected with the outer end part of the ninth conductor positioned at the inner groove of the 37 th layer of the radial direction groove of the stator core after crossing 4 grooves clockwise along the radial direction groove of the stator core (the eighth conductor crosses 4 grooves anticlockwise along the radial direction groove of the stator core (the pitch of the connection between the ninth conductor and the adjacent two layers of the radial direction groove of the 3 rd layer and the radial direction groove of the 4 th layer of the stator core is 8), the ninth conductor is located at the slot outer end part of the slot inner connection of the slot 46 of the radial layer 2 of the stator core and is located at the slot inner connection of the slot 54 of the radial layer 1 of the stator core after crossing 4 slots clockwise along the radial layer 2 of the stator core, the slot outer end part of the slot inner connection of the slot 46 of the radial layer 2 of the stator core and is located at the slot 4 slots counterclockwise along the radial layer 1 of the stator core (the pitch of the connection of the ninth conductor at the tenth conductor at the radial layer 1 of the stator core and the radial layer 2 of the adjacent two layers of the slot is 8), the slot outer end part of the slot inner connection of the slot 45 of the radial layer 1 of the stator core and is located at the slot outer end part of the slot inner connection of the slot 37 of the radial layer 2 of the stator core and is located at the slot 2 of the radial layer 2 of the slot clockwise along the radial layer 2 of the stator core (the pitch of the connection of the tenth conductor at the radial layer 1 of the slot and the radial layer 2 of the adjacent two layers of the slot along the radial layer 1 of the stator core is 8), the eleventh conductor is positioned at the outer end part of the slot connected with the inner part of the slot of the 28 th layer of the radial direction 3 of the stator core and is positioned at the outer end part of the slot connected with the inner part of the slot of the 20 th layer of the radial direction 4 of the stator core after crossing 4 slots anticlockwise along the radial direction 3 of the stator core (the pitch of the connection between the twelfth conductor and the adjacent two layers of the radial direction 3 and 4 layers of the radial direction 4 of the stator core is 8) along the radial direction 2 of the stator core, the twelfth conductor is located at the inner part of the stator core radial 5 th layer 11 th slot and then is located at the inner part of the stator core radial 6 th layer 3 th slot and then is located at the inner part of the stator core radial 6 th layer clockwise crossing 4 slots (the pitch of the thirteenth conductor connected at the inner part of the stator core radial 5 th layer and the inner part of the stator core radial 6 th layer is 8), the thirteenth conductor is located at the outer part of the stator core radial 10 th slot and then is located at the inner part of the stator core radial 4 th layer counterclockwise crossing 4 slots and then is located at the inner part of the stator core radial 5 th layer 18 slot and then is located at the inner part of the stator core radial 5 th layer counterclockwise crossing 4 slots (the pitch of the thirteenth conductor connected at the inner part of the stator core radial 5 th layer and the inner part of the stator core radial 6 th layer is 8), the thirteenth conductor is located at the inner part of the stator core radial 4 th layer 27 th layer and then is located at the inner part of the stator core radial 3 th layer radial 35 of the inner part of the stator core radial 4 th layer and then is located at the inner part of the stator core radial 3 th layer radial 4 th layer counterclockwise crossing 4 th conductor, the fifteenth conductor is positioned at the slot outer end part of the slot inner connection of the slot 44 of the layer 2 in the radial direction of the stator core and is positioned at the slot inner connection of the slot 52 of the layer 1 in the radial direction of the stator core and is positioned at the slot outer end part of the slot inner connection of the slot 52 of the layer 1 in the radial direction of the stator core after crossing 4 slots clockwise along the radial direction of the stator core (the pitch of the sixteenth conductor connected at the two adjacent layers of the slot 1 and the layer 2 in the radial direction of the stator core is 8), the sixteenth conductor is positioned at the slot outer end part of the slot inner connection of the slot 43 of the layer 1 in the radial direction of the stator core and is positioned at the slot outer end part of the slot inner connection of the slot 35 of the layer 2 in the radial direction of the stator core after crossing 4 slots anticlockwise along the radial direction of the slot 1 of the stator core and is positioned at the slot outer end part of the slot 2 in the slot clockwise direction of the slot 2 in the radial direction of the stator core (the pitch of the sixteenth conductor connected at the two adjacent layers of the slot 1 and the layer 2 in the radial direction of the stator core is 8), the seventeenth conductor is positioned at the outer end part of the groove connected with the inner part of the groove of the 26 th layer of the radial direction 3 of the stator core and is positioned at the outer end part of the groove connected with the inner part of the groove of the 18 th layer of the radial direction 4 of the stator core after crossing 4 grooves anticlockwise along the radial direction 3 of the stator core (the seventeenth conductor is positioned at the inner part of the groove connected with the adjacent two layers of the eighteenth conductor along the radial direction 3 of the stator core and the radial direction 4 of the layer is 8), the eighteenth conductor is positioned at the slot outer end part of the slot inner connection of the slot 5 th layer in the radial direction of the stator core and is positioned at the slot inner connection of the slot 1 st layer in the radial direction of the stator core after crossing 4 slots anticlockwise along the slot 5 th layer in the radial direction of the stator core, the slot outer end part of the slot inner connection of the nineteenth conductor and the slot 1 st layer in the radial direction of the stator core crosses 4 slots clockwise along the slot 4 th layer in the radial direction of the stator core (the eighteenth conductor is positioned at 8 in the pitch between the nineteenth conductor and the adjacent two layers of the slot 5 th layer and the slot 4 th layer in the radial direction of the stator core), the slot outer end part of the slot inner connection of the slot 64 th layer in the radial direction of the stator core is positioned at the slot 56 th layer in the radial direction of the slot 6 th layer in the radial direction of the stator core after crossing 4 slots clockwise along the slot 5 th layer in the radial direction of the stator core (the nineteenth conductor is positioned at 8 in the pitch between the slot 5 th conductor and the adjacent two layers of the slot 6 th layer in the radial direction of the stator core), the twentieth conductor is positioned at the outer end part of the slot internal connection of the 66 th slot of the 6 th layer of the radial direction of the stator core and is connected with the outer end part of the twenty-first conductor which is positioned at the inner connection of the 2 nd slot of the 5 th layer of the radial direction of the stator core after crossing 4 slots clockwise along the 6 th layer of the radial direction of the stator core (the pitch of the twenty-first conductor which is connected with the twenty-first conductor along the 6 th layer of the radial direction of the stator core and the adjacent two layers of the 5 th layer is 8) anticlockwise along the 5 th layer of the radial direction of the stator core, the twenty-first conductor is positioned at the slot outer end part of the slot inner connection of the slot 11 of the layer 4 in the radial direction of the stator core and is positioned at the slot inner connection of the slot 19 of the layer 3 in the radial direction of the stator core after crossing 4 slots clockwise along the radial direction of the stator core, the slot outer end part of the slot inner connection of the twenty-second conductor is positioned at the slot 3 of the layer 3 and the slot 4 in the radial direction of the stator core and is crossed 4 slots counterclockwise along the radial direction of the stator core (the pitch of the connection of the twenty-first conductor at the twenty-second conductor at the adjacent two layers of the layer 3 and the slot 4 in the radial direction of the stator core is 8), the slot outer end part of the slot inner connection of the slot 28 of the layer 2 in the radial direction of the stator core is crossed 4 slots counterclockwise along the radial direction of the stator core and is positioned at the slot outer end part of the slot 36 of the layer 1 in the radial direction of the stator core and is crossed 4 slots clockwise along the radial direction of the layer 1 of the stator core (the pitch of the connection of the twenty-second conductor at the twenty-third conductor at the slot is 8 along the adjacent two layers of the radial direction of the layer 1 and the slot 2 in the radial direction of the stator core), the twenty-third conductor is positioned at the outer end part of the slot internal connection of the 27 th slot of the 1 st layer of the radial direction of the stator core and is connected with the outer end part of the slot internal connection of the 19 th slot of the twenty-fourth conductor of the radial direction of the stator core after crossing 4 slots anticlockwise along the 1 st layer of the radial direction of the stator core (the pitch of the connection of the twenty-third conductor and the twenty-fourth conductor along the 1 st layer and the 2 nd radial adjacent two layers of the radial direction of the stator core is 8) along the 2 nd layer of the radial direction of the stator core, the twenty-fourth conductor is located at the slot outer end of the slot inner connection of the stator core radial 3 rd layer 10 slot and is located at the slot inner connection of the stator core radial 4 th layer 2 slot along the stator core radial 4 th layer clockwise after crossing 4 slots counterclockwise, the twenty-fourth conductor is located at the slot outer end of the slot inner connection of the stator core radial 3 rd layer and the 4 th layer radial adjacent two layers 8, the twenty-fifth conductor is located at the slot outer end of the slot inner connection of the stator core 5 th layer 65 slot along the stator core radial 5 th layer counterclockwise after crossing 4 slots counterclockwise, and the twenty-fifth conductor is located at the slot outer end of the slot inner connection of the stator core radial 6 th layer 57 slot along the stator core radial 6 counterclockwise after crossing 4 slots (the pitch of the twenty-fifth conductor and the twenty-sixth conductor connected at the stator core radial 5 th layer and the 6 th layer radial adjacent two layers 8), the twenty-sixth conductor is located at the slot outer end of the stator core radial 6 th layer radial adjacent two layers 8, and the twenty-sixth conductor is located at the slot outer end of the stator core radial 6 th layer radial 6 of the stator core radial adjacent two layers 8, and the twenty-sixth conductor is located at the slot outer end of the twenty-sixth conductor is located at the slot of the radial 6 th layer radial 6 of the stator core radial 6 layer radial adjacent two layers 8 and the stator core radial adjacent to the slot along the stator core radial 6 layer radial adjacent to the slot, the twenty-seventh conductor is positioned at the groove outer end part of the groove inner connection of the stator core radial 4 th layer 9 th groove and is connected with the twenty-eighth conductor after crossing 4 grooves clockwise along the stator core radial 4 th layer, and is positioned at the groove inner connection of the stator core radial 3 rd layer 17 th groove and crosses 4 grooves clockwise along the stator core radial 3 rd layer (the twenty-seventh conductor is positioned at the pitch 8 of the connection of the twenty-eighth conductor at the two layers adjacent to each other along the stator core radial 3 rd layer and the 4 th layer), the twenty-eighth conductor is positioned at the groove outer end part of the groove inner connection of the stator core radial 2 nd layer 26 groove and is connected with the twenty-ninth conductor after crossing 4 grooves counterclockwise along the stator core radial 2 nd layer and is positioned at the groove inner connection of the twenty-ninth conductor at the stator core radial 1 st layer 1 th layer clockwise crossing 4 grooves (the pitch 8 of the connection of the twenty-eighth conductor at the two layers adjacent to each other along the stator core radial 1 st layer and 2 th layer), the twenty-eighth conductor is positioned at the thirty-eighth conductor is positioned at the groove inner connection of the groove outer end part of the thirty-eighth conductor at the groove inner connection of the stator core radial 1 th layer 2 th layer along the stator core radial 1 th layer and the thirty-eighth conductor after crossing the groove is positioned at the groove inner connection of the thirty-eighth conductor at the groove inner connection of the stator core radial 1 th layer 2 th layer along the stator core radial 2 th layer, the thirty-first conductor is located at the slot outer end of the slot inner connection of the stator core radial 3 rd layer 8 th slot and is located at the slot inner connection of the stator core radial 4 th layer 72 th slot along the stator core radial 4 th slot after crossing 4 slots counterclockwise (the thirty-first conductor is located at the pitch of 8 in the connection of the thirty-first conductor to the stator core radial 3 rd layer and the 4 th layer radially adjacent two layers), the thirty-first conductor is located at the slot outer end of the slot inner connection of the stator core radial 5 th layer 63 th slot and is located at the slot outer end of the thirty-second conductor located at the stator core radial 6 th layer 55 th slot along the stator core radial 6 th layer counterclockwise after crossing 4 slots counterclockwise (the thirty-first conductor is located at the pitch of 8 in the connection of the thirty-first conductor to the stator core radial 5 th layer and the 6 th layer radially adjacent two layers), the thirty-second conductor is located at the slot outer end of the stator core radial 5 th layer 6 th layer radially adjacent two layers and is located at the thirty-first layer 6 th layer radially adjacent two layers of the stator core radial 5 th layer radially adjacent two layers) and is located at the thirty-first layer radially adjacent to the stator core radial 5 th layer radially adjacent two layers, the thirty-third conductor is positioned at the groove outer end part of the groove inner connection of the stator core radial 4 th layer 10 groove and is positioned at the groove inner connection of the stator core radial 3 rd layer 18 groove along the stator core radial 3 rd layer anticlockwise crossing 4 grooves (the pitch of the thirty-third conductor connected at the thirty-fourth conductor connected at the stator core radial 3 rd layer and the 4 th layer radial adjacent two layers is 8), the groove outer end part of the groove inner connection of the thirty-fourth conductor positioned at the stator core radial 2 nd layer 27 groove is positioned at the thirty-fifth conductor connected at the groove outer end part of the thirty-fifth conductor positioned at the stator core radial 1 st layer along the stator core radial 1 st layer after crossing 4 grooves anticlockwise crossing the stator core radial 2 th layer, and is positioned at the groove outer end part of the thirty-fourth conductor connected at the stator core radial 1 st layer 2 nd layer along the stator core radial 1 st layer clockwise crossing 4 grooves (the pitch of the thirty-fourth conductor connected at the thirty-fifth conductor connected at the thirty-fourth conductor connected at the thirty-fifth layer radial 1 st layer radial 2 nd layer radial adjacent two layers along the stator core radial 2 th layer radial adjacent two layers is 8), the thirty-fourth conductor positioned at the thirty-fifth conductor connected at the groove outer end part of the thirty-fourth conductor positioned at the thirty-fifth layer radial 2 nd layer radial side of the stator core radial 2 nd layer radial side is positioned at the thirty-fourth conductor connected at the thirty-fifth layer radial 2 nd layer radial end of the outer conductor connected at the stator core radial 2 outer layer 2 nd layer; the outer end of the corresponding slot on the 6 th layer of the radial winding of the stator core spans 4 slot pitches in the same direction (clockwise direction) on the 6 th layer, the outer end of the corresponding slot on the 5 th layer of the radial winding of the stator core spans 4 slot pitches in the same direction (anticlockwise direction) on the 5 th layer (of course, the pitch formed by connecting the outer end of the corresponding slot on the two adjacent radial layers is 8), the outer end of the corresponding slot on the 4 th layer of the radial winding of the stator core spans 4 slot pitches in the same direction (clockwise direction) on the 4 th layer, the outer end of the corresponding slot on the 3 rd layer of the radial winding of the stator core spans 4 slot pitches in the same direction (anticlockwise direction) on the 3 rd layer (of course, the pitch formed by connecting the outer end of the corresponding slot on the two adjacent radial layers is 8) on the 2 nd layer of the radial winding of the stator core, and the outer end of the corresponding slot on the 1 radial layer of the corresponding slot on the 1 radial winding of the stator core spans 4 slot pitches in the same direction (anticlockwise direction) on the 4 adjacent slot pitches on the 1 layer of the radial winding of the stator core (of the same direction).

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

The flat wire motor provided by the embodiment of the utility model comprises the stator winding in the embodiment, so the flat wire motor provided by the embodiment of the utility model also has the beneficial effects described in the embodiment, and the description is omitted here.

In the description of embodiments of the present utility model, unless explicitly stated and limited otherwise, the term "coupled" is to be interpreted broadly, as for example, whether fixedly coupled, detachably coupled, or integrally coupled; the connection may be mechanical connection, electrical connection, direct connection, indirect connection (bus connection) through an intermediate medium, or communication between the two elements. The above-described specific meanings belonging to the present utility model will be understood in detail by those skilled in the art. Finally, it should be noted that the foregoing description is only illustrative of the preferred embodiments of the present utility model and the technical principles employed.

It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims

1. A flat wire motor stator comprising:

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

and

A stator winding including a plurality of phase windings mounted on the stator core,

the method is characterized in that: each phase winding comprises X branch windings, the X branch windings are radially nested along the stator core, each branch winding comprises Y sub-branch windings, and the X X Y sub-branch windings of each phase winding are not overlapped along the circumferential part of the stator core;

each winding unit is sequentially connected to the other radial side of the stator core along one radial side of the stator core through a plurality of conductors and then returns to one radial side of the stator core, wherein X is 2 or 4, Y is 1 or 2, Z is 3, and N is 3.

2. The flat wire motor stator according to claim 1, wherein each of the winding units is located in two radially adjacent layers of the stator core from a plurality of conductors along a direction a of the stator core in a radial direction of the stator core to the other side of the stator core in a radial direction of the stator core, and from a plurality of conductors along a direction B of the stator core to the one side of the stator core in a radial direction of the stator core, and the plurality of conductors connected in sequence along the direction a of the stator core in the circumferential direction a of the stator core and the plurality of conductors connected in sequence along the direction B of the stator core are located in the two radially adjacent layers of the stator core in a radial direction of the stator core, wherein a is opposite to B.

3. The flat wire motor stator according to claim 1, wherein Z winding units of each of the sub-branch windings are sequentially connected in the same region of the stator core, and each of the sub-branch windings is not fully wound one turn in the circumferential direction of the stator core.

4. The flat wire motor stator according to claim 1, wherein each of the winding units includes one common layer conductor located on one radial side of the stator core and one common layer conductor located on the other radial side of the stator core; the same-layer conductors positioned on one side of the radial direction of the stator core cross along the circumferential direction A of the stator core, and the same-layer conductors positioned on the other side of the radial direction of the stator core cross along the circumferential direction B of the stator core.

5. The flat wire motor stator according to claim 4, wherein the same layer conductors of the Z winding units of each of the sub-branch windings on one side in the radial direction of the stator core are located in N slots adjacent in the circumferential direction of the stator core, and the same layer conductors of the Z winding units of the sub-branch windings on the other side in the radial direction of the stator core are located in N slots adjacent in the circumferential direction of the stator core.

6. The flat wire motor stator of claim 1 wherein the lead-out wires of the X branch windings of the phase winding are located at adjacent two poles of the stator winding.

7. The flat wire motor stator of claim 1 wherein each of said sub-branch windings comprises at least one coil assembly comprising 3 conductors circumferentially adjacent said stator core;

8. The flat wire motor stator of claim 5 wherein the pitch of the N identical layer conductors in each of said sub-branch windings on a radial side of said stator core is a full pitch; the pitch of the first one of N identical layer conductors positioned on the other side of the stator core in the radial direction in the sub-branch winding is long pitch, and the pitches of the second and third identical layer conductors in the N identical layer conductors are short pitch;

Or, the pitches of N identical-layer conductors positioned on one radial side of the stator core in each sub-branch winding are the whole pitches; the pitch of the first and second identical layer conductors in the N identical layer conductors positioned on the other radial side of the stator core in the sub-branch winding is long pitch, and the pitch of the third identical layer conductor in the N identical layer conductors is short pitch;

or, the pitches of N identical-layer conductors positioned on one radial side of the stator core in each sub-branch winding are the whole pitches; the pitch of the first same-layer conductor in N same-layer conductors positioned on the other side of the radial direction of the stator core in the sub-branch winding is long, the pitch of the second same-layer conductor is whole pitch, and the pitch of the third same-layer conductor is short pitch.

9. The flat wire motor stator according to claim 5, wherein a pitch of a first one of the N same-layer conductors located on a radial side of the stator core in each of the sub-branch windings is a long pitch and a pitch of a second one of the N same-layer conductors is a short pitch; the pitch of a first same-layer conductor in N same-layer conductors positioned on the other radial side of the stator core in the sub-branch winding is long pitch, and the pitch of a second same-layer conductor is short pitch;

Or, the pitch of the first same-layer conductor in the N same-layer conductors positioned on one radial side of the stator core in each sub-branch winding is long pitch, and the pitch of the second same-layer conductor is short pitch; the pitch of the first same-layer conductor in N same-layer conductors positioned on the other side of the radial direction of the stator core in the sub-branch winding is long, the pitch of the second same-layer conductor is whole pitch, and the pitch of the third same-layer conductor is short pitch.

10. The flat wire motor stator according to claim 5, wherein a first one of the N same-layer conductors of each of the sub-branch windings on a radial side of the stator core is a long pitch, a second one of the N same-layer conductors is a full pitch, and a third one of the N same-layer conductors is a short pitch; the first same-layer conductor in N same-layer conductors positioned on the other side of the radial direction of the stator core in the sub-branch winding is long in pitch, the second same-layer conductor is full in pitch, and the third same-layer conductor is short in pitch.

11. A flat wire motor comprising a flat wire motor stator as claimed in any one of claims 1 to 10.