CN219329648U

CN219329648U - Flat wire motor stator and motor

Info

Publication number: CN219329648U
Application number: CN202222413103.3U
Authority: CN
Inventors: 王文海
Original assignee: Borgwarner Powertrain Tianjin Co ltd
Current assignee: Borgwarner Powertrain Tianjin Co ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-07-11
Anticipated expiration: 2032-09-09

Abstract

The utility model provides a flat wire motor stator and a motor, wherein each phase winding comprises: a plurality of conductors, each conductor comprising: the outer ends of the slots are connected with the inner parts of the corresponding slots; the outer end parts of the grooves of the plurality of conductors positioned on the same radial layer of the stator core are consistent along the extending direction of the circumferential direction of the stator core, and the groove distances along the circumferential direction of the stator core are the same; the pitch between one slot outer end of the M/2 th layer and one slot outer end of the M/2+1 th layer in the radial direction of the stator core is different from the pitch between two slot outer ends of the other layers except the M/2 th layer and the M/2+1 th layer in the radial direction of the stator core. The technical scheme of the flat wire motor stator in the embodiment of the application solves the problems of torque fluctuation reduction, less harmonic waves, noise reduction, simple arrangement mode, manufacturing process complexity reduction and production cost reduction.

Description

Flat wire motor stator and motor

Technical Field

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

Background

In the prior art, a motor stator winding comprises a plurality of types of conductors, and a plurality of types of conductor coils penetrate into slots of a stator core according to a certain arrangement mode to form a required winding of a single-phase motor or a multi-phase motor. In the prior art, when the stator windings of the motor are arranged in two slots of the same coil, the electromotive force of harmonic waves is large, the counter potential harmonic waves of the motor are higher, and the noise of the motor is large.

Disclosure of Invention

The utility model mainly aims to provide a flat wire motor stator and a motor, which have the advantages of torque fluctuation reduction, less harmonic waves, noise reduction, simple arrangement mode, manufacturing process complexity reduction and production cost reduction.

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 on a radially inner surface thereof and spaced apart by a predetermined slot pitch in a circumferential direction of the stator core;

a stator winding including a plurality of phase windings mounted on the stator core and forming M layers in a radial direction of the stator core, M being an integer greater than 2;

each phase winding comprises:

a plurality of conductors, each conductor comprising: the outer ends of the slots are connected with the inner parts of the corresponding slots;

the outer end parts of the grooves of the plurality of conductors positioned on the same radial layer of the stator core are consistent along the extending direction of the circumferential direction of the stator core, and the groove distances extending along the circumferential direction of the stator core are the same;

the pitch between the outer end of one slot of the M/2 th layer and the outer end of one slot of the M/2+1 th layer in the same radial direction of the stator core is different from the pitch between the outer ends of two slots connected with the other layers except the M/2 th layer and the M/2+1 th layer in the same radial direction of the stator core.

Further, the plurality of conductors of each phase winding includes a first conductor and a second conductor, the first conductor surrounding the second conductor.

Further, the pitch between the outer ends of the two slots connected in the M/2 th layer and the M/2+1 th layer in the same radial direction of the stator core in each phase winding is short pitch, and the pitch between the outer ends of the two slots connected in the other layers except the M/2 th layer and the M/2+1 th layer in the same radial direction of the stator core is full pitch.

Further, the pitch between the outer ends of the two slots connected in the M/2 th layer and the M/2+1 th layer in the same radial direction of the stator core in each phase winding is a long pitch, and the pitch between the outer ends of the two slots connected in the other layers except the M/2 th layer and the M/2+1 th layer in the same radial direction of the stator core is a full pitch.

Further, when M is a multiple of 4, the first conductor of each phase winding is conductor one, the second conductor of the phase winding is conductor two, and the pitch of conductor one is a long pitch and the pitch of conductor two is a short pitch.

Further, when M is 4x+2, where X is an integer greater than or equal to 1, the first conductor located in the M/2 th layer and the M/2+1 th layer in the radial direction of the stator core in each phase winding is a third conductor and the second conductor is a fourth conductor, the pitch of the third conductor is a long pitch, and the pitch of the fourth conductor is a full pitch.

Further, when M is 4x+2, where X is an integer greater than or equal to 1, the first conductor located in the M/2 th and M/2+1 th radial layers of the stator core in each phase winding is a third conductor and the second conductor is a fourth conductor, the pitch of the third conductor is a full pitch, and the pitch of the fourth conductor is a short pitch.

Further, each phase winding includes a plurality of winding units, each winding unit being wound around the stator core Zhou Xiangbo by a first conductor crossing the second conductor.

Further, a plurality of winding units of each phase winding are connected in parallel or in series in order along the stator core.

According to another aspect of the present utility model there is provided an electric machine comprising a flat wire electric machine stator as described above.

By applying the technical scheme of the utility model, the flat wire motor stator and the motor comprise: a stator core having a plurality of slots formed on a radially inner surface thereof and spaced apart by a predetermined slot pitch in a circumferential direction of the stator core; a stator winding including a plurality of phase windings mounted on the stator core and forming M layers in a radial direction of the stator core, M being an integer greater than 2; each phase winding comprises: a plurality of conductors, each conductor comprising: the outer ends of the slots are connected with the inner parts of the corresponding slots; the outer end parts of the grooves of the plurality of conductors positioned on the same radial layer of the stator core are consistent along the extending direction of the circumferential direction of the stator core, and the groove distances extending along the circumferential direction of the stator core are the same; the pitch between the outer end of one slot of the M/2 th layer and the outer end of one slot of the M/2+1 th layer in the same radial direction of the stator core is different from the pitch between the outer ends of two slots connected with the other layers except the M/2 th layer and the M/2+1 th layer in the same radial direction of the stator core.

According to the technical scheme of the flat wire motor stator, the problems of torque fluctuation reduction, few harmonic waves, noise reduction, simple arrangement mode, manufacturing process complexity reduction and production cost reduction are solved.

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 structure of a flat wire motor in an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a phase winding in accordance with an embodiment of the present utility model;

FIG. 3 is a schematic diagram of two conductors connected by a phase winding in accordance with an embodiment of the present utility model;

fig. 4A is a schematic plan view showing a portion of a wire insertion end of a phase winding according to an embodiment of the present utility model;

fig. 4B is a schematic plan view showing another part of the wire insertion end of the phase winding in accordance with the first embodiment of the present utility model;

FIG. 4C is a partially expanded plan view of the weld end of a phase winding according to one embodiment of the utility model;

FIG. 4D is a schematic plan view showing another part of the welding end of the phase winding according to the first embodiment of the present utility model;

Fig. 5A is a schematic plan view showing a portion of a wire insertion end of a phase winding in accordance with a second embodiment of the present utility model;

fig. 5B is a schematic plan view showing another part of a wire insertion end of a phase winding in the second embodiment of the present utility model;

FIG. 5C is a partially planar expanded view of the weld end of a phase winding in accordance with a second embodiment of the present utility model;

FIG. 5D is a schematic plan view showing another part of the welding end of the phase winding in the second embodiment of the present utility model;

fig. 6A is a schematic plan view showing a portion of a wire insertion end of a phase winding in accordance with a third embodiment of the present utility model;

fig. 6B is a schematic plan view showing another part of the wire insertion end of the phase winding in the third embodiment of the present utility model;

FIG. 6C is a partially expanded plan view of the weld end of a phase winding in accordance with a third embodiment of the present utility model;

FIG. 6D is a schematic plan view showing another part of the welded end of the phase winding in accordance with the third embodiment of the present utility model;

fig. 7A is a schematic plan view showing a part of a wire insertion end of a phase winding in a fourth embodiment of the present utility model;

fig. 7B is a schematic plan view showing another part of the wire insertion end of the phase winding in the fourth embodiment of the present utility model;

FIG. 7C is a partially expanded plan view of the weld end of a phase winding in accordance with a fourth embodiment of the present utility model;

FIG. 7D is a schematic plan view showing another part of the welded end of the phase winding in the fourth embodiment of the present utility model;

fig. 8A is a schematic plan view showing a part of a wire insertion end of a phase winding in a fifth embodiment of the present utility model;

fig. 8B is a schematic plan view showing another part of the wire insertion end of the phase winding in the fifth embodiment of the present utility model;

FIG. 8C is a partially expanded plan view of the weld end of a phase winding in accordance with a fifth embodiment of the present utility model;

FIG. 8D is a schematic plan view showing another part of the welded end of the phase winding in the fifth embodiment of the present utility model;

fig. 9A is a partially exploded plan view of a wire insertion end of a phase winding in accordance with a sixth embodiment of the present utility model;

fig. 9B is a schematic plan view showing another part of the wire insertion end of the phase winding in the sixth embodiment of the present utility model;

FIG. 9C is a partially expanded plan view of the weld end of the phase winding in accordance with the sixth embodiment of the present utility model;

FIG. 9D is a schematic plan view showing another part of the welded end of the phase winding in the sixth embodiment of the present utility model;

fig. 10A is a schematic plan view showing a part of a wire insertion end of a phase winding in a seventh embodiment of the present utility model;

fig. 10B is a schematic plan view showing another part of the wire insertion end of the phase winding in the seventh embodiment of the present utility model;

FIG. 10C is a partially expanded plan view of the weld end of a phase winding in accordance with the seventh embodiment of the present utility model;

FIG. 10D is a schematic plan view showing another part of the welding end of the phase winding in the seventh embodiment of the present utility model;

FIG. 11A is a partially schematic, planar expanded view of the wire ends of phase windings in accordance with an eighth embodiment of the present utility model;

fig. 11B is a schematic plan view showing another part of the wire insertion end of the phase winding in the eighth embodiment of the present utility model;

FIG. 11C is a partially schematic, planar development of the weld end of a phase winding in accordance with an eighth embodiment of the utility model;

FIG. 11D is a schematic plan view showing another part of the welded end of the phase winding in the eighth embodiment of the present utility model;

fig. 12A is a partially planar expanded view of the wire ends of a phase winding in accordance with a ninth embodiment of the present utility model;

fig. 12B is a schematic plan view of another portion of the wire insertion end of the phase winding in accordance with the ninth embodiment of the present utility model;

FIG. 12C is a partially planar expanded view of the weld end of a phase winding in accordance with the ninth embodiment of the present utility model;

FIG. 12D is a schematic plan view of another portion of the welded end of the phase winding of embodiment nine of the present utility model;

fig. 13A is a partially exploded plan view of the wire ends of a phase winding in accordance with a tenth embodiment of the present utility model;

Fig. 13B is a schematic plan view showing another part of the wire insertion end of the phase winding in accordance with the tenth embodiment of the present utility model;

FIG. 13C is a partially expanded plan view of the weld end of a phase winding in accordance with the tenth embodiment of the present utility model;

FIG. 13D is a schematic plan view showing another part of the welded end of the phase winding in accordance with the tenth embodiment of the present utility model;

fig. 14A is a partially exploded plan view of a wire end of a phase winding in accordance with an eleventh embodiment of the present utility model;

fig. 14B is a schematic plan view showing another part of the wire insertion end of the phase winding in accordance with the eleventh embodiment of the present utility model;

FIG. 14C is a partially expanded plan view of the weld end of a phase winding in accordance with an eleventh embodiment of the utility model;

FIG. 14D is a schematic plan view showing another part of the welded end of the phase winding in accordance with the eleventh embodiment of the present utility model;

fig. 15A is a schematic plan view showing a portion of a wire insertion end of a phase winding in accordance with a twelfth embodiment of the present utility model;

fig. 15B is a schematic plan view showing another part of the wire insertion end of the phase winding in the twelfth embodiment of the present utility model;

FIG. 15C is a partially expanded plan view of the weld end of a phase winding in accordance with the twelve embodiments of the present utility model;

FIG. 15D is a schematic plan view showing another part of the welded end of the phase winding in the twelfth embodiment of the present utility model;

Fig. 16A is a partially exploded plan view of the wire ends of the phase windings in thirteenth embodiment of the present utility model;

fig. 16B is a schematic plan view showing another part of the wire insertion end of the phase winding in thirteenth embodiment of the present utility model;

FIG. 16C is a partially expanded plan view of the weld end of a phase winding in accordance with a thirteenth embodiment of the present utility model;

FIG. 16D is a schematic plan view of another portion of the welded ends of the phase windings in accordance with the thirteenth embodiment of the present utility model;

fig. 17A is a partially exploded plan view of the wire ends of the phase windings in fourteen embodiments of the present utility model;

fig. 17B is a schematic plan view showing another part of the wire insertion end of the phase winding in fourteen embodiments of the present utility model;

FIG. 17C is a partially expanded plan view of the weld end of a fourteen phase winding according to an embodiment of the utility model;

FIG. 17D is a schematic plan view of another portion of the welded end of the phase winding in accordance with the fourteen embodiments of the present utility model;

fig. 18A is a partially schematic, planar expanded view of the wire ends of phase windings in accordance with an embodiment fifteen of the present utility model;

fig. 18B is a schematic plan view showing another part of the wire insertion end of the phase winding in fifteen embodiments of the present utility model;

FIG. 18C is a partially expanded plan view of the weld end of a phase winding in accordance with an embodiment fifteen of the present utility model;

FIG. 18D is a schematic plan view of another portion of the welded ends of the phase windings in fifteen embodiments of the present utility model;

fig. 19A is a partially exploded plan view of the wire ends of the phase windings in sixteen embodiments of the present utility model;

fig. 19B is a schematic plan view showing another part of the wire insertion end of the phase winding in sixteen embodiments of the present utility model;

FIG. 19C is a partially schematic, planar development of the welded ends of the phase windings in sixteen embodiments of the utility model;

FIG. 19D is a schematic plan view of another portion of the welded end of the sixteen phase windings of the present utility model;

FIG. 20A is a partially schematic, expanded plan view of the wire ends of a seventeenth embodiment of a phase winding;

FIG. 20B is a schematic plan view of another portion of the wire insertion end of a seventeenth embodiment of the present utility model;

FIG. 20C is a partially schematic, expanded plan view of the weld end of an eighteenth embodiment of the utility model;

FIG. 20D is a schematic plan view of another portion of the welded end of a eighteenth phase winding according to the present utility model;

FIG. 21A is a partially schematic, exploded plan view of the wire ends of eighteen phase windings in accordance with an embodiment of the present utility model;

fig. 21B is a schematic plan view showing another part of the wire insertion end of the eighteenth phase winding according to the embodiment of the present utility model;

FIG. 21C is a partially schematic, expanded plan view of the weld end of an eighteenth embodiment of the utility model;

FIG. 21D is a schematic plan view of another portion of the welded end of an eighteenth phase winding according to the present utility model;

FIG. 22A is a partially schematic, planar expanded view of a first winding unit of a phase winding in accordance with an embodiment of the utility model;

FIG. 22B is a schematic plan view of another portion of a first winding unit of a phase winding in accordance with an embodiment of the present utility model;

FIG. 23A is a partially schematic, planar expanded view of a second winding unit of a phase winding in accordance with an embodiment of the utility model;

FIG. 23B is a schematic plan view of another portion of a second winding unit of a phase winding in accordance with an embodiment of the present utility model;

FIG. 24A is a partially schematic, planar expanded view of a third winding unit of a phase winding in accordance with an embodiment of the utility model;

FIG. 24B is a schematic plan view of another portion of a third winding unit of a phase winding in accordance with an embodiment of the present utility model;

FIG. 25A is a partially schematic, planar expanded view of a fourth winding unit of a phase winding in accordance with an embodiment of the utility model;

FIG. 25B is a schematic plan view of another portion of a fourth winding unit of a phase winding in accordance with an embodiment of the present utility model;

Fig. 26 is a schematic view of an insulating paper structure in a stator slot of a first flat wire motor according to an embodiment of the present utility model;

fig. 27 is a schematic view of a second type of insulation paper structure in a stator slot of a flat wire motor in accordance with an embodiment of the present utility model;

fig. 28 is a schematic view of an insulation paper structure in a stator slot of a third flat wire motor in accordance with an embodiment of the present utility model;

fig. 29 is a schematic view of an insulation paper structure in a stator slot of a fourth flat wire motor in accordance with an embodiment of the present utility model;

in the figure:

10. stator winding 20 stator core 220 conductor one 240 conductor two

260 conductors three 280 conductors four

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 executed independently or in combination with each other, and the embodiments of the present utility model are not particularly limited thereto.

The pitch in this application is the interval in the circumferential direction between two groove interiors of the same conductor, or the pitch is the sum of the span between the groove interiors corresponding to one welding end of one conductor and the span between the groove interiors corresponding to one welding end of the other conductor.

Fig. 1 shows a schematic structural diagram of the present utility model, and this embodiment relates to a flat wire motor stator and a motor, in which the outer ends of the slots of a plurality of conductors located on the same radial layer of the stator core are identical in the extending direction of the stator core in the circumferential direction of the stator core and the slot pitch in the circumferential direction of the stator core is identical, and the pitch between the outer ends of one slot located on the M/2 th layer and one slot outer end of the M/2+1 th layer in the same radial direction of the stator core is different from the pitch between the outer ends of two slots located on the other layers outside the M/2 th layer and the M/2+1 th layer of the stator core.

As shown in fig. 1 and 2, an embodiment of the present utility model provides a flat wire motor stator, including: the stator core 20, in the embodiment, the stator core 20 has 72 slots 21, the 72 slots 21 being formed on a radially inner surface of the stator core 20 and being spaced apart by a predetermined slot pitch in a circumferential direction of the stator core 20, the stator winding 10 including 3 phase windings mounted on the stator core 20, and M layers being formed in the radial direction of the stator core 20, M being an integer greater than 2 times.

Referring to fig. 1 to 29, in the present embodiment, a flat wire motor stator includes: the stator core 20, the number of slots 21 in the stator core 20 is equal to 72 (i.e., 2X12X 3), the 72 slots 21 are formed on the radially inner surface of the stator core and are uniformly spaced apart at a predetermined slot pitch in the circumferential direction of the stator core 20, two adjacent slots 21 define one tooth 22, the stator core 20 is formed by laminating a plurality of annular magnetic steel plates to form two end faces 25, 26 in the axial direction of the stator core, and other conventional metal plates may be used instead of the magnetic steel plates. Fig. 26 shows that the first type of in-slot insulating paper 30 is a B-shaped insulating paper, 27 shows that the second type of in-slot insulating paper 30 is a double-mouth type insulating paper, fig. 28 shows that the third type of in-slot insulating paper 30 is an S-shaped paper, any one of the three types of in-slot insulating paper can be selected to isolate the alternate conductors in the slot 21 in this embodiment, as in fig. 29, the fourth type of in-slot insulating paper 30 is a single large-mouth type paper, and when the conductor insulation is thicker, the isolation is not needed in the middle, and the fourth type of in-slot insulating paper 30 can be used; a stator winding 10, wherein the stator winding 10 is mounted on the stator core 20, in the embodiment, the stator winding 10 is a three-phase (i.e. a U-phase winding, a V-phase winding, a W-phase winding) winding, and the number of slots of each pole per phase is equal to or less than 2; the stator pole corresponding to each pole of the rotor is provided with 6 slots 21, the stator having twelve poles and being so for each phase of the three-phase stator winding 10, i.e. the stator core has 72 slots; the stator winding 10 includes 3 phase windings mounted on the stator core 20, and forms M layers in the radial direction of the stator core 20, where M is 4 in the first to sixth embodiments, 8 in the seventh to twelfth embodiments, and 6 in the thirteenth to eighteenth embodiments, and of course M may be a multiple of more than 2, such as 10, 12, etc.

Illustratively, as shown in fig. 3, in an embodiment, each phase winding includes: a plurality of conductors, each conductor comprising: the slot inner parts of two layers radially adjacent to the stator core 20 and the slot outer end parts connected with the corresponding slot inner parts;

in conjunction with fig. 3, in an embodiment, each phase winding includes: each of the plurality of conductors includes two slot portions located in radially adjacent two layers of the stator core 20 and circumferentially different slot portions, a turning portion located at an outer end 26 of an axial direction of the stator core 20 and connected to the two slot portions, and an outer end 25 located at the outer end of the axial direction of the stator core 20 and connected to the two slot portions, respectively.

As illustrated in fig. 2 to 21D, in the first to the eighteenth embodiments, the outer end portions of the slots of the plurality of conductors located in the same layer in the radial direction of the stator core are identical in the extending direction in the circumferential direction of the stator core and the slot pitch in the circumferential direction of the stator core is identical; the pitch between the outer end of one slot of the M/2 th layer and the outer end of one slot of the M/2+1 th layer in the same radial direction of the stator core is different from the pitch between the outer ends of two slots connected with the other layers except the M/2 th layer and the M/2+1 th layer in the same radial direction of the stator core.

Referring to fig. 2 to 6D, in the first to third embodiments, the outer ends of the corresponding slots in the first and second radial layers of the stator core are identical to each other in the extending direction of the stator core in the circumferential direction of the stator core (i.e., twisted in the counterclockwise direction), and the twisted slots are identical to each other by 4 slots, the outer ends of the corresponding slots in the second radial layer of the stator core are identical to each other in the extending direction of the stator core in the circumferential direction of the stator core (i.e., twisted in the clockwise direction), and the twisted slots are identical to each other by 2 slots, and the outer ends of the corresponding slots in the third radial layer of the stator core and the fourth radial layer of the plurality of conductors in the third radial layer of the stator core are identical to each other in the extending direction of the stator core in the circumferential direction of the stator core (i.e., twisted in the counterclockwise direction), and the twisted slots are identical to each other by 3 slots, and the twisted slots are identical to each other in the extending direction of the circumferential direction of the same to the same length of the stator core (i.e., twisted slots are identical to each other by 3 slots) in the extending direction of the circumferential direction of the same to the same direction of the stator core; the pitch between the inside of the slot located in the radial 2 nd layer of the stator core and the outside of the slot located in the radial 3 rd layer of the stator core in the other conductor is 5 (the outside of the slot located in the radial 2 nd layer of the stator core is 2, the outside of the slot located in the third layer is 3), the pitch between the outside of the slot located in the radial 1 st layer of the stator core and the outside of the slot located in the radial 2 nd layer of the stator core in the other conductor is 6 (4 outside of the slot located in the first layer, 2 outside of the slot located in the second layer), the pitch between the outside of the slot located in the radial 3 rd layer of the stator core and the outside of the slot located in the radial 4 th layer of the stator core in the other conductor is 6 (3 outside of the slot located in the third layer, 3 outside of the slot located in the fourth layer), namely the pitch between the outside of the one slot located in the radial 2 nd layer of the stator core and the outside of the slot located in the third layer is 3, is different from the outside of the radial 2 nd embodiment of the stator core and the outside of the slot located in the third layer, and the outside of the radial 3 th layer is 2 outside of the slot located in the third layer, and the outside of the slot located in the third layer is 3 outside of the radial embodiment, and the outside of the stator core is connected between the outside of the radial layer and the outside of the slot located in the third layer is 3).

Further, as shown in fig. 2 to 6D, in the first to third embodiments, the pitch between the outer end portions of the two slots connected in the 2 nd and 3 rd layers of the same radial direction of the stator core in each phase winding is short pitch, and the pitch between the outer end portions of the two slots connected in the remaining layers of the 2 nd and 3 rd layers of the same radial direction of the stator core is full pitch.

Specifically, in the first to third embodiments, the outer ends of the same-layer slots corresponding to the inner slots of the 1 st and 2 nd layers in the same radial direction of the stator core in the conductors of the U-phase winding (V-phase winding, W-phase winding) extend 2 slot distances along the circumferential direction of the stator core, and the outer ends of the same-layer slots corresponding to the inner slots of the 3 rd layers in the radial direction of the stator core in the conductors of the 3 rd and 4 th layers in the radial direction of the stator core extend 3 slot distances along the circumferential direction of the stator core; namely, the pitch between the outer ends of the same-layer slots corresponding to the inner parts of the slots positioned in the radial layer 2 of the stator core in the conductors positioned in the radial layer 1 and the radial layer 2 of the stator core and the outer ends of the same-layer slots corresponding to the inner parts of the slots positioned in the radial layer 3 of the stator core in the conductors positioned in the radial layer 3 and the radial layer 4 of the stator core is short pitch (the short pitch is 5 here); the pitch at which the outer ends of the same layer corresponding to the inner parts of the slots located in the radial 1 st and 2 nd layers of the stator core and the other inner parts of the slots located in the radial 1 st and 2 nd layers of the stator core are connected is the full pitch (the full pitch is 6 here), the pitch at which the outer ends of the same layer corresponding to the inner parts of the slots located in the radial 3 rd and 4 th layers of the stator core and the other inner parts of the slots located in the radial 3 rd and 4 th layers of the stator core are connected is the full pitch (the full pitch is 6 here), that is, the pitch between the outer ends of the two slots located in the radial 1 st and 2 nd layers of the stator core and the pitch between the outer ends of the two slots located in the radial 3 rd and 4 th layers of the stator core are the full pitch.

Referring to fig. 2 and fig. 7A to fig. 9D, in the fourth to sixth embodiments, the outer ends of the slots corresponding to the same layers in the inner slots of the first and second radial layers of the stator core are all aligned to the left (i.e., twisted in the counterclockwise direction) along the circumferential extension direction of the stator core, the twisted slots are all 3 slots, the outer ends of the slots corresponding to the same layers in the inner slots of the first and second radial layers of the stator core are all aligned to the right (i.e., twisted in the clockwise direction) along the circumferential extension direction of the stator core, the twisted slots are all 3 slots, the slots corresponding to the same layers in the inner slots of the third and fourth radial layers of the stator core are all aligned to the left (i.e., twisted in the counterclockwise direction) along the circumferential extension direction of the stator core, the twisted slots are all 4 slots, and the slots corresponding to the inner slots of the third and fourth radial layers of the stator core are all aligned to the right (i.e., twisted slots corresponding to the outer ends of the same slots) along the circumferential extension direction of the stator core are all aligned to the right (i.e., twisted slots are all aligned to the same) along the circumferential extension direction of the inner slots of the stator core; the pitch between the inside of the slot located in the radial 2 nd layer of the stator core and the outside of the slot located in the radial 3 rd layer of the stator core in the other conductor is 7 (3 for the outside of the slot located in the radial 2 nd layer of the stator core and 4 for the outside of the slot located in the radial 4 th layer of the stator core), the pitch between the outside of the slot located in the radial 1 st layer of the stator core and the outside of the slot located in the radial 2 nd layer of the stator core in the other conductor is 6 (3 for the outside of the slot located in the radial 3 rd layer of the stator core and 3 for the outside of the slot located in the radial 3 rd layer of the stator core), i.e. the pitch between the outside of the one outside of the slot located in the radial 2 nd layer of the stator core and the outside of the slot located in the radial 3 rd layer of the other conductor is 6 (4 for the outside of the slot located in the radial 4 th layer of the stator core, 2) is different from the pitch between the outside of the radial 2 nd layer of the stator core and the outside of the slot located in the radial 2 nd layer of the stator core and the outside of the radial 3 th layer (3 th layer, the outside of the radial 2 th layer of the slot and the outside of the stator core) and the outside of the other conductor is 3).

Further, as shown in fig. 2, 7A to 9D, in the fourth to sixth embodiments, the pitch between the outer end portions of the two slots connected at the radial 2 nd and 3 rd layers of the stator core in each phase winding is a long pitch, and the pitch between the outer end portions of the two slots connected at the other layers except the radial 2 nd and 3 rd layers of the stator core is a full pitch.

Specifically, in the fourth to sixth embodiments, the outer ends of the same-layer slots corresponding to the inside of the slots of the 1 st and 2 nd radial layers of the stator core in the conductors of the U-phase windings (V-phase windings, W-phase windings) extend by 3 slot pitches in the circumferential direction of the stator core, and the outer ends of the same-layer slots corresponding to the inside of the slots of the 3 rd and 4 th radial layers of the stator core extend by 4 slot pitches in the circumferential direction of the stator core; namely, the pitch between the outer end parts of the same layer corresponding to the inner part of the slots positioned in the radial layer 2 of the stator core in the conductors positioned in the radial layer 1 and the radial layer 2 of the stator core and the connection between the outer end parts of the same layer corresponding to the inner part of the slots positioned in the radial layer 3 of the stator core in the conductors positioned in the radial layer 3 and the radial layer 4 of the stator core is a long pitch (the long pitch is 7 here); the pitch at which the outer ends of the same layer corresponding to the inner parts of the slots located in the radial 1 st and 2 nd layers of the stator core and the other inner parts of the slots located in the radial 1 st and 2 nd layers of the stator core are connected is the full pitch (the full pitch is 6 here), the pitch at which the outer ends of the same layer corresponding to the inner parts of the slots located in the radial 3 rd and 4 th layers of the stator core and the other inner parts of the slots located in the radial 3 rd and 4 th layers of the stator core are connected is the full pitch (the full pitch is 6 here), that is, the pitch between the outer ends of the two slots located in the radial 1 st and 2 nd layers of the stator core and the pitch between the outer ends of the two slots located in the radial 3 rd and 4 th layers of the stator core are the full pitch.

Referring to fig. 2, 19A to 21D, in sixteen to eighteenth embodiments, the outer ends of the slots corresponding to the same layers in the inner slots of the first and second radial layers of the stator core are all aligned to the left (i.e., twisted in the counterclockwise direction) along the circumferential extension direction of the stator core, the twisted slots are all 3 slots, the outer ends of the slots corresponding to the same layers in the inner slots of the second radial layer of the stator core are all aligned to the right (i.e., twisted in the clockwise direction) along the circumferential extension direction of the stator core, the twisted slots are all 3 slots, the slots corresponding to the inner slots of the third radial layer of the stator core and the fourth radial layer of the plurality of conductors are all aligned to the left (i.e., twisted in the counterclockwise direction) along the circumferential extension direction of the stator core, the twisted slots are all 3 slots, and the slots corresponding to the inner slots of the fourth radial layer of the stator core are all aligned to the right (i.e., twisted in the circumferential direction) along the circumferential extension direction of the same as the slots corresponding to the outer ends of the stator core; the corresponding identical layer of the outer end parts of the slots in the radial fifth layer and the sixth layer of the plurality of conductors of the stator core are identical in the extending direction of the radial fifth layer of the stator core along the circumferential direction of the stator core and are twisted in the left direction (namely, the anticlockwise direction), the twisted slot distances are identical to 4 slot distances, the corresponding identical layer of the outer end parts of the slots in the radial sixth layer of the stator core and the plurality of conductors of the radial fifth layer and the sixth layer of the stator core are identical in the extending direction of the circumferential direction of the stator core and are twisted in the right direction (namely, the clockwise direction), and the twisted slot distances are identical to 2 slot distances; a pitch between a slot inner portion of one conductor located in a radial 3 rd layer of the stator core and a slot outer end portion of the other conductor located in a radial 4 th layer of the stator core is 5 (3 for a slot outer end portion of a third layer and 2 for a slot outer end portion of a fourth layer), a pitch between a slot outer end portion of one conductor located in a radial 1 st layer of the stator core and a slot outer end portion of the other conductor located in a radial 2 nd layer of the stator core is 6 (3 for a slot outer end portion of the first layer and 3 for a slot outer end portion of the second layer), a pitch between a slot outer end portion of one conductor located in a radial 2 nd layer of the stator core and a slot outer end portion of the other conductor located in a radial 3 th layer of the stator core is 6 (3 for a slot outer end portion of the second layer and 3 for a slot outer end portion of the third layer), a pitch between a slot outer end portion of one conductor located in a radial 5 th layer of the stator core and a slot outer end portion of the other conductor located in a radial 6 th layer of the stator core is 6 (3 for a slot outer end portion of the fifth layer of the first layer and 4 for a slot outer end portion of the other conductor located in a radial 2 of the fifth layer of the stator core) a pitch between a slot outer end portion of the other conductor located in a radial 2 th layer of the stator core and a slot outer end portion of the other conductor located in a radial 3 of the fifth layer of the stator core is 3, that is, the pitch between the connection of one slot outer end portion located at the 3 rd layer in the radial direction of the stator core and one slot outer end portion located at the 4 th layer is different from the pitch between the two slot outer end portions connected to the other layers except the 3 rd layer and the 4 th layer in the radial direction of the stator core (in the sixteenth to eighteenth embodiments, the two slot outer end portions are connected to the other layers in the radial direction of the stator core, the first layer and the second layer, the fifth layer and the sixth layer, the second layer and the third layer, the fourth layer and the fifth layer).

Further, as shown in fig. 2, 19A to 21D, in the sixteenth to eighteenth embodiments, the pitch between the outer end portions of the two slots connected at the 3 rd and 4 th radial layers of the stator core in each phase winding is a short pitch, and the pitch between the outer end portions of the two slots connected at the other layers except the 3 rd and 4 th radial layers of the stator core is a full pitch.

Specifically, in sixteen to eighteenth embodiments, one of the U-phase windings (V-phase winding, W-phase winding) is located in the 3 rd and 4 th radial layers of the stator core, and the corresponding outer end of the same layer slot located in the 3 rd radial layers of the stator core extends for 3 slot pitches along the circumferential direction of the stator core, and the other is located in the 3 rd and 4 th radial layers of the stator core, and the corresponding outer end of the same layer slot located in the 4 th radial layers of the stator core extends for 2 slot pitches along the circumferential direction of the stator core; namely, the pitch between the outer ends of the same-layer slots corresponding to the inner parts of the slots of the radial 3 rd layer of the stator core in the conductors of the radial 3 rd layer and the radial 4 th layer of the stator core and the outer ends of the same-layer slots corresponding to the inner parts of the slots of the radial 4 th layer of the stator core in the conductors of the radial 3 rd layer and the radial 4 th layer of the stator core is short pitch (the short pitch is 5 here); the pitch at which the outer end of the same layer corresponding to the inside of the slot located in the radial 1 st layer and the radial 2 nd layer of the stator core is connected with the outer end of the same layer corresponding to the inside of the slot located in the radial 2 nd layer of the stator core in the radial 1 st layer and the radial 2 nd layer of the stator core in one of the conductors located in the radial 1 st layer and the radial 2 nd layer of the stator core is the full pitch (the full pitch is 6 here), the pitch at which the outer end of the same layer corresponding to the inside of the slot located in the radial 5 th layer and the radial 5 th layer of the stator core in the other conductor located in the radial 5 th layer and the radial 6 th layer of the stator core is connected with the outer end of the same layer corresponding to the inside of the slot located in the radial 6 th layer of the stator core in the other conductor located in the radial 5 th layer and the radial 6 th layer of the stator core is the full pitch (the full pitch is 6 here), the pitch at which the outer ends of the same-layer slots corresponding to the inner portions of the slots located in the radial 1 st and 2 nd layers of the stator core are connected to the outer ends of the same-layer slots corresponding to the inner portions of the slots located in the radial 3 rd and 4 th layers of the stator core is the full pitch (the full pitch at this point is 6), the pitch at which the outer ends of the same-layer slots corresponding to the inner portions of the slots located in the radial 4 th and 5 th layers of the stator core are connected to the outer ends of the same-layer slots corresponding to the inner portions of the slots located in the radial 5 th and 6 th layers of the stator core is the full pitch (the full pitch at this point is 6), that is, the pitch between the outer ends of the two slots connected in the radial 1 st and 2 nd layers of the stator core is the full pitch, the pitch between the two outer ends of the slots connected in the radial 5 th layer and the radial 6 th layer of the stator core is the whole pitch, the pitch between the two outer ends of the slots connected in the radial 2 nd layer and the radial 3 rd layer of the stator core is the whole pitch, and the pitch between the two outer ends of the slots connected in the radial 4 th layer and the radial 5 th layer of the stator core is the whole pitch.

Referring to fig. 2, 16A to 18D, in the thirteenth to fifteen embodiments, the outer ends of the slots corresponding to the same layers in the inner portions of the slots in the first and second radial layers of the stator core are all aligned to the left (i.e., twisted counterclockwise) in the circumferential extension direction of the stator core, the twisted slots are equally spaced apart by 4 slots, the outer ends of the slots corresponding to the same layers in the inner portions of the slots in the first and second radial layers of the stator core are all aligned to the right (i.e., twisted clockwise) in the circumferential extension direction of the stator core, the twisted slots are equally spaced apart by 2 slots, the outer ends of the slots corresponding to the same layers in the inner portions of the slots in the third and fourth radial layers of the stator core are all aligned to the left (i.e., twisted counterclockwise) in the circumferential extension direction of the stator core, the twisted slots are equally spaced apart by 4 slots, and the inner ends of the slots corresponding to the inner portions of the slots in the third and fourth radial layers of the stator core are all spaced apart by 2 slots in the circumferential extension direction of the same direction of the stator core; the corresponding identical layer of the outer end parts of the slots in the radial fifth layer and the sixth layer of the plurality of conductors of the stator core are identical in the extending direction of the radial fifth layer of the stator core along the circumferential direction of the stator core and are twisted in the left direction (namely, the anticlockwise direction), the twisted slot distances are 3 slot distances, the corresponding identical layer of the outer end parts of the slots in the radial sixth layer of the stator core and the plurality of conductors of the radial fifth layer and the sixth layer of the stator core are identical in the extending direction of the radial sixth layer of the stator core along the circumferential direction of the stator core and are twisted in the right direction (namely, the clockwise direction), and the twisted slot distances are 3 slot distances; a pitch between a slot inner corresponding to the same layer in one of the conductors located in the radial third layer of the stator core and a slot outer corresponding to the same layer in the other conductor located in the radial fourth layer of the stator core is 7 (the slot outer end of the third layer is 4, the slot outer end of the fourth layer is 3), a pitch between a slot outer end of the one conductor located in the radial first layer of the stator core and a slot outer end of the other conductor located in the radial second layer of the stator core is 6 (the slot outer end of the first layer is 4, the slot outer end of the second layer is 2), a pitch between a slot outer end of the one conductor located in the radial second layer of the stator core and a slot outer end of the other conductor located in the radial third layer of the stator core is 6 (the slot outer end of the second layer is 2, the slot outer end of the third layer is 4), a pitch between a slot outer end of the one conductor located in the radial third layer of the stator core and a slot outer end of the fifth layer of the other conductor located in the radial sixth layer of the five layers is 6 (the slot outer end of the fifth layer is 3, the slot outer end of the fifth layer of the conductor is 3), that is, the pitch between the connection of one slot outer end portion located at the 3 rd layer in the radial direction of the stator core and one slot outer end portion located at the 4 th layer is different from the pitch between the two slot outer end portions connected to the other layers except the 3 rd layer and the 4 th layer in the radial direction of the stator core (in the thirteenth to fifteenth embodiments, the other layers connect the two slot outer end portions are the first layer and the second layer, the fifth layer and the sixth layer, the second layer and the third layer, the fourth layer and the fifth layer in the radial direction of the stator core).

Further, as shown in fig. 2, 16A to 18D, in thirteenth to fifteen embodiments, the pitch between the outer end portions of the two slots connected at the 3 rd and 4 th radial layers of the stator core in each phase winding is a long pitch, and the pitch between the outer end portions of the two slots connected at the other layers except the 3 rd and 4 th radial layers of the stator core is a full pitch.

Specifically, in the thirteenth to fifteenth embodiments, one of the U-phase windings (V-phase winding, W-phase winding) is located in the 3 rd and 4 th radial layers of the stator core, and the corresponding outer end of the same layer slot located in the 3 rd radial layers of the stator core extends for 4 slot pitches along the circumferential direction of the stator core, and the other is located in the 3 rd and 4 th radial layers of the stator core, and the corresponding outer end of the same layer slot located in the 4 th radial layers of the stator core extends for 3 slot pitches along the circumferential direction of the stator core; namely, the pitch between the outer end parts of the same layer corresponding to the inner part of the radial layer 3 of the stator core in the conductors of the radial layer 3 and the radial layer 4 of the stator core and the outer end parts of the same layer corresponding to the inner part of the radial layer 4 of the stator core in the conductors of the radial layer 3 and the radial layer 4 of the stator core is a long pitch (the long pitch is 7 here); the pitch at which the outer end of the same layer corresponding to the inside of the slot located in the radial 1 st layer and the radial 2 nd layer of the stator core is connected with the outer end of the same layer corresponding to the inside of the slot located in the radial 2 nd layer of the stator core in the radial 1 st layer and the radial 2 nd layer of the stator core in one of the conductors located in the radial 1 st layer and the radial 2 nd layer of the stator core is the full pitch (the full pitch is 6 here), the pitch at which the outer end of the same layer corresponding to the inside of the slot located in the radial 5 th layer and the radial 5 th layer of the stator core in the other conductor located in the radial 5 th layer and the radial 6 th layer of the stator core is connected with the outer end of the same layer corresponding to the inside of the slot located in the radial 6 th layer of the stator core in the other conductor located in the radial 5 th layer and the radial 6 th layer of the stator core is the full pitch (the full pitch is 6 here), the pitch at which the outer ends of the same-layer slots corresponding to the inner portions of the slots located in the radial 1 st and 2 nd layers of the stator core are connected to the outer ends of the same-layer slots corresponding to the inner portions of the slots located in the radial 3 rd and 4 th layers of the stator core is the full pitch (the full pitch at this point is 6), the pitch at which the outer ends of the same-layer slots corresponding to the inner portions of the slots located in the radial 4 th and 5 th layers of the stator core are connected to the outer ends of the same-layer slots corresponding to the inner portions of the slots located in the radial 5 th and 6 th layers of the stator core is the full pitch (the full pitch at this point is 6), that is, the pitch between the outer ends of the two slots connected in the radial 1 st and 2 nd layers of the stator core is the full pitch, the pitch between the two outer ends of the slots connected in the radial 5 th layer and the radial 6 th layer of the stator core is the whole pitch, the pitch between the two outer ends of the slots connected in the radial 2 nd layer and the radial 3 rd layer of the stator core is the whole pitch, and the pitch between the two outer ends of the slots connected in the radial 4 th layer and the radial 5 th layer of the stator core is the whole pitch.

Referring to fig. 2 and fig. 10A to fig. 12D, in the seventh to ninth embodiments, the outer ends of the slots corresponding to the same layers in the inner slots of the first and second radial layers of the stator core are all aligned to the left (i.e., twisted in the counterclockwise direction) along the circumferential extension direction of the stator core, the twisted slots are the same 3 slots, the outer ends of the slots corresponding to the same layers in the inner slots of the second radial layer of the stator core are all aligned to the right (i.e., twisted in the clockwise direction) along the circumferential extension direction of the stator core, the twisted slots are the same 3 slots, the slots corresponding to the same slots in the inner slots of the third radial layer of the stator core and the fourth radial layer of the stator core are all aligned to the left (i.e., twisted in the counterclockwise direction) along the circumferential extension direction of the stator core, the twisted slots are the same 3 slots, and the slots corresponding to the inner slots of the third radial layer of the stator core and the fourth radial layer of the plurality of the conductors of the stator core are all aligned to the right (i.e., twisted in the circumferential extension direction of the same slots) along the circumferential extension direction of the same 3 slots along the circumferential extension direction of the stator core; the corresponding identical layer of the outer end parts of the slots in the radial fifth layer and the sixth layer of the plurality of conductors of the stator core are identical in the extending direction of the radial fifth layer of the stator core along the circumferential direction of the stator core and are twisted in the left direction (namely, the anticlockwise direction), the twisted slot distances are 2 slot distances, the corresponding identical layer of the outer end parts of the slots in the radial sixth layer of the stator core and the plurality of conductors of the radial fifth layer and the sixth layer of the stator core are identical in the extending direction of the radial sixth layer of the stator core along the circumferential direction of the stator core and are twisted in the right direction (namely, the clockwise direction), and the twisted slot distances are 4 slot distances; the outer end parts of the corresponding identical layers of the slots in the seventh radial layer and the eighth radial layer of the stator core are uniformly twisted leftwards (namely, anticlockwise) along the circumferential extension direction of the stator core, the twisted slot distances are 2 slot distances, the outer end parts of the corresponding identical layers of the slots in the seventh radial layer and the eighth radial layer of the stator core are uniformly twisted rightwards (namely, clockwise) along the circumferential extension direction of the stator core, and the twisted slot distances are 4 slot distances; a pitch between a slot inner corresponding to one slot outer end of a radial fourth layer of the stator core and another conductor corresponding to the same slot outer end of the radial fourth layer of the stator core is 5 (3 at the slot outer end of the fourth layer and 2 at the slot outer end of the fifth layer), a pitch between a slot outer end of a radial first layer of the stator core and another conductor corresponding to the one slot outer end of a radial second layer of the stator core is 6 (3 at the slot outer end of the first layer and 3 at the slot outer end of the second layer), a pitch between a slot outer end of a radial third layer of the one conductor and a slot outer end of a radial fourth layer of the other conductor corresponding to the same slot outer end of the stator core is 6 (3 at the slot outer end of the third layer and 3 at the slot outer end of the fourth layer), a pitch between a slot outer end of a radial third layer of the one conductor and a slot outer end of a radial sixth layer of the other conductor is 6 (3 at the radial outer end of the seventh layer of the one conductor) a pitch between a slot outer end of the radial fifth layer of the one conductor and a slot outer end of the seventh layer of the one conductor is 2 at the radial outer end of the seventh layer of the eighth layer of the one conductor is 2, that is, the pitch between the connection of one slot outer end portion located at the 4 th layer and one slot outer end portion located at the 5 th layer in the radial direction of the stator core is different from the pitch between the two slot outer end portions connected to the other layers except the 4 th layer and the 5 th layer in the radial direction of the stator core (in the seventh to ninth embodiments, the other layers connect the two slot outer end portions in the radial direction of the stator core are the first layer and the second layer, the fifth layer and the sixth layer, the third layer and the fourth layer, the seventh layer and the eighth layer).

Further, as shown in fig. 10A to 12D, in the seventh to ninth embodiments, the pitch between the outer end portions of the two slots connected in the 4 th and 5 th layers of the same radial direction of the stator core in each phase winding is short pitch, and the pitch between the outer end portions of the two slots connected in the remaining layers of the 4 th and 5 th layers of the same radial direction of the stator core is full pitch.

Specifically, in the seventh to ninth embodiments, the outer ends of the same-layer slots corresponding to the inside of the slots of the 3 rd and 4 th radial layers of the stator core among the conductors of the U-phase windings (V-phase windings, W-phase windings) extend by 3 slot pitches along the circumferential direction of the stator core, and the outer ends of the same-layer slots corresponding to the inside of the slots of the 5 th and 6 th radial layers of the stator core extend by 2 slot pitches along the circumferential direction of the stator core; namely, the pitch between the outer ends of the same-layer slots corresponding to the inner part of the slots of the radial layer 4 of the stator core in the conductors of the radial layer 3 and the radial layer 4 of the stator core and the outer ends of the same-layer slots corresponding to the inner part of the slots of the radial layer 5 of the stator core in the conductors of the radial layer 5 and the radial layer 6 of the stator core is short pitch (the short pitch is 5 here); the pitch at which the outer end of the same layer corresponding to the inside of the slot located in the radial 1 st layer and the radial 2 nd layer of the stator core is connected with the outer end of the same layer corresponding to the inside of the slot located in the radial 2 nd layer of the stator core in the radial 1 st layer and the radial 2 nd layer of the stator core in one of the conductors located in the radial 1 st layer and the radial 2 nd layer of the stator core is the full pitch (the full pitch is 6 here), the pitch at which the outer end of the same layer corresponding to the inside of the slot located in the radial 3 rd layer and the radial 3 rd layer of the stator core in the conductor located in the radial 3 rd layer and the radial 4 th layer of the stator core is connected with the outer end of the same layer corresponding to the inside of the slot located in the radial 4 th layer of the stator core in the other conductor located in the radial 3 rd layer and the radial 4 th layer of the stator core is the full pitch (the full pitch is 6 here), the pitch at which the outer end of the same layer corresponding to the inside of the slot located in the radial 5 th layer and the 6 th layer of the stator core is connected with the outer end of the same layer corresponding to the inside of the slot located in the radial 5 th layer and the 6 th layer of the stator core is the full pitch (the full pitch is 6 here), the pitch at which the outer end of the same layer corresponding to the inside of the slot located in the radial 7 th layer and the 8 th layer of the stator core is connected with the outer end of the same layer corresponding to the inside of the slot located in the radial 8 th layer of the stator core is the full pitch (the full pitch is 6 here), that is, the pitch between the outer ends of the two slots located in the radial 1 st layer and the 2 nd layer of the stator core is the full pitch, the pitch between the two outer ends of the slots connected in the radial 3 rd layer and the radial 4 th layer of the stator core is the whole pitch, the pitch between the two outer ends of the slots connected in the radial 5 th layer and the radial 6 th layer of the stator core is the whole pitch, and the pitch between the two outer ends of the slots connected in the radial 7 th layer and the radial 8 th layer of the stator core is the whole pitch.

Referring to fig. 2 and fig. 13A to fig. 15D, in the ninth to twelfth embodiments, the outer ends of the slots corresponding to the same layers in the inner slots of the first and second radial layers of the stator core are all aligned to the left (i.e., twisted in the counterclockwise direction) along the circumferential extension direction of the stator core, the twisted slots are the same 3 slots, the outer ends of the slots corresponding to the same layers in the inner slots of the first and second radial layers of the stator core are all aligned to the right (i.e., twisted in the clockwise direction) along the circumferential extension direction of the stator core, the twisted slots are the same 3 slots, the slots corresponding to the inner slots of the third and fourth radial layers of the stator core are all aligned to the left (i.e., twisted in the counterclockwise direction) along the circumferential extension direction of the stator core, the twisted slots are the same 3 slots, and the slots corresponding to the inner slots of the third and fourth radial layers of the stator core are all aligned to the right (i.e., twisted slots corresponding to the outer ends of the same slots) along the circumferential extension direction of the stator core along the circumferential direction of the stator core; the corresponding identical layer of the outer end parts of the slots in the radial fifth layer and the sixth layer of the plurality of conductors of the stator core are identical in the extending direction of the radial fifth layer of the stator core along the circumferential direction of the stator core and are twisted in the left direction (namely, the anticlockwise direction), the twisted slot distances are identical to 4 slot distances, the corresponding identical layer of the outer end parts of the slots in the radial sixth layer of the stator core and the plurality of conductors of the radial fifth layer and the sixth layer of the stator core are identical in the extending direction of the circumferential direction of the stator core and are twisted in the right direction (namely, the clockwise direction), and the twisted slot distances are identical to 2 slot distances; the outer end parts of the corresponding identical layers of the slots in the seventh radial layer and the eighth radial layer of the stator core are uniformly twisted leftwards (namely, anticlockwise) along the circumferential extension direction of the stator core, the twisted slot distances are all 4 slot distances, the outer end parts of the corresponding identical layers of the slots in the seventh radial layer and the eighth radial layer of the stator core are uniformly twisted rightwards (namely, clockwise) along the circumferential extension direction of the stator core, and the twisted slot distances are all 2 slot distances; the pitch between the connection of the one outer end portion of the slot in the radial fourth layer of the stator core corresponding to the one outer end portion of the slot in the radial fourth layer of the stator core and the one outer end portion of the slot in the radial fifth layer of the stator core corresponding to the other conductor is 7 (3 on the outer end portion of the slot in the fourth layer, 4 on the outer end portion of the slot in the fifth layer), the pitch between the connection of the one outer end portion of the slot in the radial first layer of the stator core and the one outer end portion of the slot in the radial second layer of the stator core corresponding to the other conductor is 6 (3 on the outer end portion of the slot in the first layer, 3 on the outer end portion of the slot in the second layer), a pitch between one outer end of one conductor located in a third layer in the radial direction of the stator core and one outer end of the other conductor located in a fourth layer in the radial direction of the stator core is 6 (3 outer end of one layer in the radial direction of the stator core, 4 outer end of one layer in the radial direction of the stator core, 2 outer end of one layer in the radial direction of the sixth layer in the other conductor), a pitch between one outer end of the other conductor located in a seventh layer in the radial direction of the stator core and one outer end of the other conductor located in the radial direction of the stator core is 6 (4 outer end of one layer in the radial direction of the seventh layer, 2 outer end of one layer in the eighth layer in the radial direction of the eighth layer), that is, the pitch between the connection of one slot outer end portion located at the 4 th layer in the radial direction of the stator core and one slot outer end portion located at the 5 th layer is different from the pitch between the two slot outer end portions connected to the other layers except the 4 th layer and the 5 th layer in the radial direction of the stator core (in the ninth to twelfth embodiments, the other layers are connected to the two slot outer end portions in the radial direction of the stator core, the first and second layers, the fifth and sixth layers, the third and fourth layers, the seventh and eighth layers).

Further, as shown in fig. 2, 13A to 15D, in the tenth to twelfth embodiments, the pitch between the outer end portions of the two slots connected at the 4 th and 5 th radial layers of the stator core in each phase winding is a long pitch, and the pitch between the outer end portions of the two slots connected at the other layers except the 4 th and 5 th radial layers of the stator core is a full pitch.

Specifically, in the tenth to twelfth embodiments, the outer ends of the same-layer slots corresponding to the inside of the slots of the 3 rd and 4 th radial layers of the stator core among the conductors of the U-phase windings (V-phase windings, W-phase windings) extend by 3 slot pitches in the circumferential direction of the stator core, and the outer ends of the same-layer slots corresponding to the inside of the slots of the 5 th and 6 th radial layers of the stator core extend by 4 slot pitches in the circumferential direction of the stator core; namely, the pitch between the outer end parts of the same layer corresponding to the inner part of the radial layer 4 of the stator core in the conductors of the radial layer 3 and the radial layer 4 of the stator core and the connection between the outer end parts of the same layer corresponding to the inner part of the radial layer 5 of the stator core in the conductors of the radial layer 5 and the radial layer 6 of the stator core is a long pitch (the long pitch is 7 here); the pitch at which the outer end of the same layer corresponding to the inside of the slot located in the radial 1 st layer and the radial 2 nd layer of the stator core is connected with the outer end of the same layer corresponding to the inside of the slot located in the radial 2 nd layer of the stator core in the radial 1 st layer and the radial 2 nd layer of the stator core in one of the conductors located in the radial 1 st layer and the radial 2 nd layer of the stator core is the full pitch (the full pitch is 6 here), the pitch at which the outer end of the same layer corresponding to the inside of the slot located in the radial 3 rd layer and the radial 3 rd layer of the stator core in the conductor located in the radial 3 rd layer and the radial 4 th layer of the stator core is connected with the outer end of the same layer corresponding to the inside of the slot located in the radial 4 th layer of the stator core in the other conductor located in the radial 3 rd layer and the radial 4 th layer of the stator core is the full pitch (the full pitch is 6 here), the pitch at which the outer end of the same layer corresponding to the inside of the slot located in the radial 5 th layer and the 6 th layer of the stator core is connected with the outer end of the same layer corresponding to the inside of the slot located in the radial 5 th layer and the 6 th layer of the stator core is the full pitch (the full pitch is 6 here), the pitch at which the outer end of the same layer corresponding to the inside of the slot located in the radial 7 th layer and the 8 th layer of the stator core is connected with the outer end of the same layer corresponding to the inside of the slot located in the radial 8 th layer of the stator core is the full pitch (the full pitch is 6 here), that is, the pitch between the outer ends of the two slots located in the radial 1 st layer and the 2 nd layer of the stator core is the full pitch, the pitch between the two outer ends of the slots connected in the radial 3 rd layer and the radial 4 th layer of the stator core is the whole pitch, the pitch between the two outer ends of the slots connected in the radial 5 th layer and the radial 6 th layer of the stator core is the whole pitch, and the pitch between the two outer ends of the slots connected in the radial 7 th layer and the radial 8 th layer of the stator core is the whole pitch.

Illustratively, as shown in fig. 1, 2, 3, in an embodiment, the plurality of conductors of each phase winding includes a first conductor surrounding a second conductor and a second conductor.

In conjunction with fig. 1-21D, in an embodiment, the plurality of conductors of each phase winding includes: a first conductor surrounding the second conductor, in the first to the fifteenth embodiments, one of the first conductors is located in the 72 nd slot of the radial 2 nd layer of the stator core, the second is located in the 7 th slot of the radial 1 st layer of the stator core, one of the second conductors is located in the 1 st slot of the radial 2 nd layer of the stator core, the other of the second conductors is located in the 6 th slot of the radial 1 st layer of the stator core, i.e., the first conductor surrounds the second conductor, in the thirteenth to the fifteenth embodiments, one of the first conductors is located in the 1 st slot of the radial 4 th layer of the stator core, the second is located in the 7 th slot of the radial 3 rd layer of the stator core, one of the second conductors is located in the 2 nd slot of the radial 4 th layer of the stator core, and the other of the second conductors is located in the 6 th slot of the radial 3 rd layer of the stator core, i.e., the first conductor surrounds the second conductor; in the sixteenth to eighteenth embodiments, one slot interior of the first conductor is located in the 1 st slot of the 4 th radial layer of the stator core, the second slot interior is located in the 9 th slot of the 3 rd radial layer of the stator core, one slot interior of the second conductor is located in the 2 nd slot of the 4 th radial layer of the stator core, and the other slot interior of the second conductor is located in the 8 th slot of the 3 rd radial layer of the stator core, that is, the first conductor surrounds the second conductor; naturally, the corresponding slots in the stator core corresponding to the first conductor and the second conductor have some movement, but the first conductor is also moved into the corresponding slots on the basis of surrounding the second conductor;

As shown in fig. 4A to 15D, in the first to the twelfth embodiments, when M is a multiple of 4, the first conductor of each phase winding is the first conductor 220, the second conductor of the phase winding is the second conductor 240, and the pitch of the first conductor 220 is the long pitch and the pitch of the second conductor 240 is the short pitch.

Specifically, in the first to sixth embodiments, when M is 4, the first conductor of each phase winding is the first conductor 220, the second conductor is the second conductor 240, one of the slot interiors of the first conductor 220 is located in the stator core radial layer 2 nd slot 72, the other of the slot interiors of the first conductor 220 is located in the stator core radial layer 1 st slot 7, that is, the pitch of the first conductor 220 is a long pitch (here, the long pitch is 7), one of the slot interiors of the second conductor 240 is located in the stator core radial layer 2 nd slot 1, the other of the slot interiors of the second conductor 240 is located in the stator core radial layer 1 st slot, that is, the pitch of the second conductor 240 is a short pitch (here, the short pitch is 5), and in the seventh to twelfth embodiments, when M is 8, the first conductor of each phase winding is the first conductor 220, the second conductor is the second conductor 240, the one of the slot interiors of the first conductor 220 is located in the stator core radial layer 2 nd slot 72, the other of the first conductor 240 is located in the stator core radial layer 2 nd slot, the other of the first conductor 240 is located in the stator core radial layer 2 nd the second slot, the other of the first conductor 240 is located in the radial layer 2 nd slot, the other of the first conductor 240 is the short pitch (here, the first conductor is the second slot 5), the other slot of the first conductor is located in the second slot 2 nd of the second slot is the first slot 2 nd of the second layer 2 nd, and the first conductor is the second slot 5 is located in the second slot 2 nd the first slot is the second slot) is the first slot 2 nd 5).

As shown in fig. 19A to 21D, in the sixteenth to eighteenth embodiments, when M is 6, where X is an integer equal to 1, the first conductor located in the 3 rd and 4 th layers in the radial direction of the stator core in each phase winding is conductor three 260 and the second conductor is conductor four 280, the pitch of the conductor three 260 is a long pitch, and the pitch of the conductor four 280 is a full pitch.

Specifically, as shown in fig. 19A to 21D, in the sixteenth to eighteenth embodiments, when M is 6, the first conductor located at the 3 rd and 4 th radial layers of the stator core in each phase winding is conductor three 260, the second conductor is conductor four 280, one slot interior of conductor three 260 is located at the 1 st radial layer of the stator core, the other slot interior of conductor three 260 is located at the 9 rd radial layer of the stator core, that is, the pitch of conductor three 260 is a long pitch (here, the long pitch is 8), one slot interior of conductor four 280 is located at the 2 nd radial layer of the stator core, and the other slot interior of conductor four 280 is located at the 8 rd radial layer of the stator core, that is, the pitch of conductor four 280 is a full pitch (here, the full pitch is 6).

As shown in fig. 16A to 18D, in the thirteenth to fifteen embodiments, when M is 6, where X is an integer equal to 1, the first conductor at the 3 rd and 4 th layers in the radial direction of the stator core in each phase winding is conductor three 260 and the second conductor is conductor four 280, the pitch of the conductor three 260 is the full pitch, and the pitch of the conductor four 280 is the short pitch.

Specifically, as shown in fig. 16A to 18D, in the thirteenth to fifteenth embodiments, when M is 6, the first conductor located in the 3 rd and 4 th radial layers of the stator core in each phase winding is conductor three 260, the second conductor is conductor four 280, one slot interior of conductor three 260 is located in the 1 st radial layer of the stator core, the other slot interior of conductor three 260 is located in the 7 rd radial layer of the stator core, that is, the pitch of conductor three 260 is the full pitch (here, the full pitch is 6), one slot interior of conductor four 280 is located in the 2 nd radial layer of the stator core, and the other slot interior of conductor four 280 is located in the 6 rd radial layer of the stator core, that is, the pitch of conductor four 280 is the short pitch (here, the short pitch is 4).

Illustratively, as shown in fig. 3, 22A-25B, in a first embodiment, each phase winding includes 4 winding units, each winding unit being wound around the stator core Zhou Xiangbo by a first conductor crossing a second conductor.

Specifically, in connection with fig. 22A and 22b, the u-phase winding includes 4 winding units, the first winding unit is connected by wave winding at the outer end of the slot corresponding to the slot inside of the 25 th slot of the radial 2 nd layer of the stator core by one second conductor (conductor two 240) to the outer end of the slot corresponding to the slot inside of the 19 th slot of the radial 1 st layer of the stator core by one first conductor (conductor one 220), the first conductor (conductor one 220) is connected by wave winding at the outer end of the slot corresponding to the slot inside of the 12 th slot of the radial 2 nd layer of the stator core to the outer end of the slot corresponding to the slot inside of the 6 th slot of the radial 1 st layer of the stator core by the other second conductor (conductor two 240), the second conductor (conductor two 240) is connected with the corresponding outer end part wave of the first conductor (conductor one 220) in the corresponding inner end part wave of the stator core radial 1 st layer slot in the corresponding inner end part wave of the second conductor (conductor two 240) in the corresponding inner end part wave of the stator core radial 1 st layer slot in the corresponding inner end wave of the second conductor (conductor two 240) in the corresponding inner end part wave of the stator core radial 2 nd layer slot in the corresponding inner end part wave of the stator core radial 1 st layer slot in the corresponding inner end part wave of the stator core radial 1 st layer in the corresponding inner end part wave of the stator core in the corresponding inner part wave of the stator core in the radial 2 nd layer in the corresponding inner end part wave of the first conductor (conductor one 220), the first conductor (conductor one 220) is connected with the corresponding outer end of the second conductor (conductor two 240) in the radial direction 3 rd layer 31 st slot of the stator core in a wave winding manner at the corresponding outer end of the first conductor (conductor two 240) in the radial direction 2 nd layer 36 th slot of the stator core, the second conductor (conductor two 240) is connected with the corresponding outer end of the first conductor (conductor one 220) in the radial direction 3 rd layer 20 th slot of the stator core in a wave winding manner at the corresponding outer end of the second conductor (conductor two 240) in the radial direction 4 th layer 26 th slot of the stator core, the first conductor (conductor one 220) is in wave winding connection with the corresponding outer end part of the corresponding inner slot of the 13 th slot of the 4 th layer of the radial direction of the stator core, the second conductor (conductor two 240) is in wave winding connection with the corresponding outer end part of the corresponding inner slot of the 7 th slot of the 3 rd layer of the radial direction of the stator core, the second conductor (conductor two 240) is connected with the corresponding outer end of the first conductor (conductor one 220) in the corresponding inner end of the stator core radial layer 2 slot in a wave winding manner, the first conductor (conductor one 220) is connected with the corresponding outer end of the second conductor in the radial layer 3 slot 68 slot in the stator core, the second conductor (conductor two 240) is connected with the corresponding outer end of the second conductor (conductor two 240) in the radial layer 4 slot 61 slot in the stator core in a wave winding manner, the second conductor (conductor two 240) is connected with the corresponding outer end of the first conductor (conductor one 220) in the corresponding inner end of the stator core radial layer 4 th slot 50 in a wave winding manner, the first conductor (conductor one 220) is connected with the corresponding outer end of the first conductor (conductor two 220) in the corresponding inner end of the stator core radial layer 3 th slot 44 in a wave winding manner, and the first conductor (conductor one 220) is connected with the corresponding outer end of the first conductor (conductor two 240) in the corresponding inner end of the stator core radial layer 4 th slot 37 in a wave winding manner, namely the first winding unit is connected with the second conductor (conductor two 240) in a wave winding manner along the stator core Zhou Xiangbo.

Specifically, referring to fig. 23A and 23b, the u-phase winding includes 4 winding units, the second winding unit is formed by wave-winding the outer end of the corresponding slot inside the 24 th slot in the radial direction 2 nd layer of the stator core from one first conductor (conductor one 220) to the outer end of the corresponding slot inside the 18 th slot in the radial direction 1 st layer of the stator core from one second conductor (conductor two 240), the outer end of the corresponding slot inside the 13 th slot in the radial direction 2 nd layer of the stator core from the second conductor (conductor two 240) to the outer end of the corresponding slot inside the 7 th slot in the radial direction 1 st layer of the stator core from the other first conductor (conductor one 220), the first conductor (conductor one 220) is connected with the corresponding outer end part wave of the second conductor (conductor two 240) which is positioned at the corresponding outer end part of the second conductor (conductor two 240) which is positioned at the corresponding inner end part of the first layer (66 th slot in the radial direction of the stator core, the second conductor (conductor two 240) is connected with the corresponding outer end part wave of the second conductor (conductor one 220) which is positioned at the corresponding inner end part of the second layer (61 th slot in the radial direction of the stator core, the first conductor (conductor one 220) is connected with the corresponding outer end part wave of the first conductor (conductor two 240) which is positioned at the corresponding outer end part of the second conductor (conductor two 240) which is positioned at the corresponding inner end part of the second slot in the first layer (42 th slot in the radial direction of the stator core), the second conductor (conductor two 240) is located at the corresponding outer end of the second conductor (conductor two 240) located at the corresponding inner end of the second 37 th slot in the radial direction of the stator core and is wound around the corresponding outer end of the second conductor (conductor one 220) located at the corresponding inner end of the second 37 th slot in the radial direction of the stator core and is located at the corresponding inner end of the second 37 th slot in the radial direction of the stator core, the first conductor (conductor one 220) located at the corresponding inner end of the second conductor (conductor two 240) located at the corresponding inner end of the second conductor (conductor one 220) located at the corresponding inner end of the second slot in the second 37 th slot in the radial direction of the stator core and is wound around the corresponding outer end of the second conductor (conductor one 220) located at the corresponding inner end of the second slot in the second 3 rd slot in the radial direction of the stator core and is wound around the corresponding outer end of the second conductor (conductor one 220) located at the corresponding inner end of the second conductor (conductor one 240) located at the corresponding inner end of the second 37 th slot in the radial direction of the stator core and is wound around the corresponding inner end of the second conductor (conductor one 240) located at the corresponding inner end of the second slot in the second 37 th slot in the radial direction of the stator core and is located at the corresponding inner end of the second slot in the second 4, the second conductor (conductor one 240 located at the second conductor (conductor one 220) located at the corresponding end, the first conductor (conductor one 220) is connected with the corresponding outer end of the second conductor (conductor two 240) in the corresponding inner end of the stator core radial direction layer 4 slot 49 in a wave winding manner, the second conductor (conductor two 240) is connected with the corresponding outer end of the first conductor (conductor one 220) in the corresponding inner end of the stator core radial direction layer 3 slot 43 in a wave winding manner, and the second conductor (conductor two 240) is connected with the corresponding outer end of the first conductor (conductor one 220) in the stator core radial direction layer 4 slot 38 in a wave winding manner, namely, the first winding unit is connected with the second conductor (conductor two 240) in a wave winding manner along the stator core Zhou Xiangbo.

Specifically, referring to fig. 24A and 24b, the u-phase winding includes 4 winding units, and the third winding unit is formed by wave-winding the outer end of the corresponding slot inside the slot of the 3 rd layer in the radial direction 50 th slot of the stator core from one first conductor (conductor one 220) to the outer end of the corresponding slot inside the slot of the 56 th layer in the radial direction 56 of the stator core from one second conductor (conductor two 240), wave-winding the outer end of the corresponding slot inside the slot of the 3 rd layer in the radial direction 61 of the stator core from the second conductor (conductor two 240) to the outer end of the corresponding slot inside the slot of the 67 th layer in the radial direction 4 th slot of the stator core from the other first conductor (conductor one 220), the first conductor (conductor one 220) is connected with the corresponding outer end part wave of the second conductor (conductor two 240) which is positioned at the corresponding outer end part of the second layer 2 slot in the radial direction of the stator core and is positioned at the corresponding inner end part of the first layer 8 slot in the radial direction of the stator core, the second conductor (conductor two 240) is connected with the corresponding outer end part wave of the other first conductor (conductor one 220) which is positioned at the corresponding inner end part of the first layer 19 slot in the radial direction of the stator core and is positioned at the corresponding inner end part wave of the first conductor (conductor one 220) which is positioned at the corresponding inner end part of the first layer 26 slot in the radial direction of the stator core and is connected with the corresponding outer end part wave of the second conductor (conductor two 240) which is positioned at the corresponding inner end part of the first layer 32 slot in the radial direction of the stator core, the second conductor (conductor two 240) is connected with the corresponding outer end part wave of the other first conductor (conductor one 220) in the corresponding inner end part wave of the stator core radial direction 3 rd layer 37 th slot, the first conductor (conductor one 220) is connected with the corresponding outer end part wave of the second conductor (conductor two 240) in the corresponding inner end part wave of the stator core radial direction 1 st layer 49 th slot, the second conductor (conductor two 240) is connected with the corresponding outer end part wave of the second conductor (conductor two 240) in the corresponding inner end part wave of the stator core radial direction 1 st layer 60 th slot, the second conductor (conductor two 240) is connected with the corresponding outer end part wave of the other first conductor (conductor one 220) in the corresponding inner end part wave of the stator core radial direction 2 nd layer 66 th slot, the first conductor (conductor one 220) is connected with the corresponding outer end part of the second conductor (conductor two 240) in the corresponding inner end part of the stator core radial layer 1 slot in a wave winding manner, the second conductor (conductor two 240) is connected with the corresponding outer end part of the second conductor in the stator core radial layer 2 slot in a wave winding manner, the second conductor (conductor two 240) is connected with the corresponding outer end part of the first conductor (conductor one 220) in the corresponding inner end part of the stator core radial layer 1 slot in a wave winding manner, the first conductor (conductor one 220) is connected with the corresponding outer end of the second conductor (conductor two 240) in the corresponding inner end of the stator core radial layer 1 slot 25 in a wave winding manner, the second conductor (conductor two 240) is connected with the corresponding outer end of the second conductor (conductor two 240) in the corresponding inner end of the stator core radial layer 2 slot 31 in a wave winding manner, and the second conductor (conductor two 240) is connected with the first conductor (conductor one 220) in a wave winding manner along the stator core Zhou Xiangbo in a crossing manner.

Specifically, referring to fig. 25A and 25b, the u-phase winding includes 4 winding units, and the fourth winding unit is formed by wave-winding the outer end of the corresponding slot inside the slot of the 3 rd layer in the radial direction of the stator core from the outer end of the corresponding slot inside the slot of the 49 th layer in the radial direction of the stator core by wave-winding the outer end of the corresponding slot inside the slot of the 55 th layer in the radial direction of the stator core from the second conductor (conductor two 240) to which the outer end of the corresponding slot inside the slot of the 55 th layer in the radial direction of the stator core is connected by wave-winding the outer end of the corresponding slot inside the slot of the 4 th layer in the radial direction of the stator core from the first conductor (conductor two 240), the second conductor (conductor two 240) is connected with the corresponding outer end part wave of the first conductor (conductor one 220) in the corresponding inner end part wave of the stator core in the radial 3 rd layer 1 st slot, the first conductor (conductor one 220) is connected with the corresponding outer end part wave of the second conductor (conductor two 240) in the corresponding inner end part wave of the stator core in the radial 4 th layer 7 th slot, the second conductor (conductor two 240) is connected with the corresponding outer end part wave of the second conductor (conductor two 240) in the corresponding inner end part wave of the stator core in the radial 4 th layer 20 th slot, the second conductor (conductor two 240) is connected with the corresponding outer end part wave of the first conductor (conductor one 220) in the radial 4 th layer 31 th slot, the first conductor (conductor one 220) is connected with the corresponding outer end part wave of the corresponding inner end part of the stator core radial layer 3 slot at the slot inner part of the stator core radial layer 2 slot at the slot 43 at the slot inner part of the stator core radial layer 2 through wave winding, the second conductor (conductor two 240) is connected with the corresponding outer end part wave of the corresponding inner end part wave of the stator core radial layer 1 slot at the slot inner part of the stator core radial layer 48 at the slot inner part of the stator core radial layer 2 slot at the slot 54 through wave winding, the first conductor (conductor one 220) is in wave winding connection with the corresponding outer end part of the corresponding inner groove of the first 61 th layer of the radial direction of the stator core, the second conductor (conductor two 240) is in wave winding connection with the corresponding outer end part of the corresponding inner groove of the second 67 th layer of the radial direction of the stator core, the second conductor (conductor two 240) is connected with the corresponding outer end of the first conductor (conductor one 220) in the corresponding inner end of the stator core radial layer 1 and 72 slot in a wave winding manner, the first conductor (conductor one 220) is connected with the corresponding outer end of the second conductor in the radial layer 2 and 6 slot in the stator core in a wave winding manner, the first conductor (conductor two 220) is connected with the corresponding outer end of the second conductor (conductor two 240) in the radial layer 1 and 13 slot in the stator core in a wave winding manner, the second conductor (conductor two 240) is wave-wound around the corresponding outer end of the first conductor (conductor one 220) located in the corresponding inner end of the 24 th slot in the radial direction of the stator core, and the first conductor (conductor one 220) is wave-wound around the corresponding outer end of the first conductor (conductor two 220) located in the corresponding inner end of the 30 th slot in the radial direction of the stator core, and the first winding unit is formed by crossing the first conductor (conductor one 220) and the second conductor (conductor two 240) along the stator core Zhou Xiangbo.

Further, each winding unit (the first winding unit, the second winding unit, the third winding unit, and the fourth winding unit) is connected by a first conductor (the first conductor 220 or the third conductor 260) and a second conductor (the second conductor 240 or the fourth conductor 280) in a winding manner along the stator core Zhou Xiangbo, and other embodiments of the present application, in conjunction with fig. 5A to 21D, also satisfy that each winding unit is connected by the first conductor and the second conductor in a winding manner along the stator core Zhou Xiangbo, which is not further described herein.

As shown in fig. 22A to 25B, the 4 winding units of each phase winding are exemplarily connected in parallel along the stator core to form 4-branch windings, i.e., the 4-branch windings in the first embodiment shown in fig. 4A to 4D are formed by the 4-branch windings corresponding to the 4-branch windings in fig. 22A to 25B, respectively; as shown in fig. 22A to 25B, 4 winding units of each phase winding form a 2-branch winding parallel connection along the stator core, namely, a U1 outlet end of the first winding unit of fig. 22A to 22B of the 4 winding units of fig. 22A to 25B is connected with a U5 inlet end of the third winding unit of fig. 24A to 24B, thereby forming one branch winding, an outlet end U3 of the second winding unit of fig. 23A to 23B is connected with a lead end U7 of the fourth winding unit of fig. 25A to 25B, thereby forming another branch winding, and the 4 winding units of each phase winding form a 2-branch winding parallel connection along the stator core, thereby forming a 2-branch winding parallel structure in the second embodiment as shown in fig. 5A to 5D; as shown in fig. 22A to 25B, on the basis of the second embodiment, connecting the wire outlet end U4 of the second winding unit to the wire outlet end U6 of the third winding unit forms a series structure of stator windings, that is, a series winding structure in the third embodiment shown in fig. 6A to 6D.

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

The motor provided by the embodiment of the utility model comprises the stator in the above embodiment, so the motor provided by the embodiment of the utility model also has the beneficial effects described in the above embodiment, and is not repeated 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 on a radially inner surface thereof and spaced apart by a predetermined slot pitch in a circumferential direction of the stator core;

the method is characterized in that: each of the phase windings comprises:

a plurality of conductors, each of said conductors comprising: the stator core is positioned in the slots of two radially adjacent layers of the stator core and is connected with the outer ends of the slots in the corresponding slots;

the outer end parts of the grooves of the plurality of conductors positioned on the same radial layer of the stator core are consistent along the circumferential extension direction of the stator core, and the groove distances extending along the circumferential direction of the stator core are the same;

the pitch between the outer end of one slot of the M/2 th layer and the outer end of one slot of the M/2+1 th layer in the same radial direction of the stator core is different from the pitch between the outer end of two slots connected with the other layers except the M/2 th layer and the M/2+1 th layer in the same radial direction of the stator core.

2. The flat wire motor stator of claim 1 wherein the plurality of conductors of each of the phase windings comprises a first conductor and a second conductor, the first conductor surrounding the second conductor.

3. The flat wire motor stator according to claim 2, wherein a pitch between outer ends of two slots connected at the M/2 th and M/2+1 th layers in the same radial direction of the stator core in each of the phase windings is a short pitch, and a pitch between outer ends of two slots connected at the remaining layers except for the M/2 th and M/2+1 th layers in the same radial direction of the stator core is a full pitch.

4. The flat wire motor stator according to claim 2, wherein a pitch between outer ends of two slots connected at the M/2 th and M/2+1 th layers in the same radial direction of the stator core in each of the phase windings is a long pitch, and a pitch between outer ends of two slots connected at the remaining layers except for the M/2 th and M/2+1 th layers in the same radial direction of the stator core is a full pitch.

5. The flat wire motor stator according to claim 3 or 4, wherein when M is a multiple of 4, the first conductor of each of the phase windings is a first conductor, the second conductor of the phase windings is a second conductor, and the pitch of the first conductor is a long pitch and the pitch of the second conductor is a short pitch.

6. A flat wire motor stator according to claim 3, wherein when M is 4x+2, wherein X is an integer of 1 or more, the first conductor located in the M/2 th and M/2+1 th radial layers of the stator core in each of the phase windings is conductor three and the second conductor is conductor four, the pitch of the conductor three is a long pitch, and the pitch of the conductor four is a full pitch.

7. The flat wire motor stator according to claim 4, wherein when M is 4x+2, wherein X is an integer of 1 or more, the first conductor located in the M/2 th and M/2+1 th radial layers of the stator core in each of the phase windings is a third conductor and the second conductor is a fourth conductor, the pitch of the third conductor is a full pitch, and the pitch of the fourth conductor is a short pitch.

8. The flat wire motor stator of claim 2 wherein each of said phase windings comprises a plurality of winding elements, each of said winding elements being wound around said stator core Zhou Xiangbo by crossing said first conductor with said second conductor.

9. The flat wire motor stator according to claim 1, wherein a plurality of winding units of each of the phase windings are connected in parallel or in series in order along the stator core.

10. An electric machine comprising a flat wire electric machine stator as claimed in any one of claims 1 to 9.