CN220732474U

CN220732474U - Stator winding, stator and motor

Info

Publication number: CN220732474U
Application number: CN202321513000.2U
Authority: CN
Inventors: 柏荣键
Original assignee: Borgwarner Powertrain Tianjin Co ltd
Current assignee: Borgwarner Powertrain Tianjin Co ltd
Priority date: 2023-06-14
Filing date: 2023-06-14
Publication date: 2024-04-05
Anticipated expiration: 2033-06-14

Abstract

The utility model provides a stator winding, a stator and a motor, wherein the number of slots of each phase of each pole is 3, any phase winding comprises a first coil group and a second coil group, wherein the first coil group and the second coil group are arranged on the radially innermost layer and the radially outermost layer of a stator core, the first coil group comprises a plurality of first conductor groups which are sequentially arranged along the circumferential direction of the stator core, and the second coil group comprises second conductor groups which are sequentially arranged along the circumferential direction of the stator core; at least one coil group III arranged on two adjacent radial layers of the stator core, wherein the coil group III is arranged between the coil group I and the coil group II and comprises a plurality of third conductor groups which are sequentially arranged along the circumferential direction of the stator core; any phase winding comprises 3 branch windings connected in parallel, and a plurality of conductors of each branch winding, which are positioned in the same magnetic pole of the stator winding, are sequentially connected along the radial direction of the stator core; the magnetic circuit is of a symmetrical structure, so that the problem of loop current is solved, the axial height of the stator winding is reduced, and the processing efficiency is improved.

Description

Stator winding, stator and motor

Technical Field

The utility model belongs to the technical field of motors, and particularly relates to a stator winding, a stator and a motor.

Background

The stator winding includes a plurality of U-shaped conductors in the motor, and stator winding includes a plurality of U-shaped conductors, with a plurality of U-shaped conductors according to certain arrangement mode, pierces into stator core's inslot, forms the three-phase winding of required motor, among the prior art: taking a star-connected three-phase motor as an example, when the motor operates, the potential at the outgoing line of each branch is equal to the external input power supply voltage, the potential at the star point is 0, the potential at the outgoing line gradually changes to the potential at the star point, and the smaller the length of a conductor wire through which current flows is, the smaller the potential difference is at two different conductor positions between the outgoing line and the star point. In the existing wave winding motor, the length of a conductor wire through which current flows between radially adjacent welding spots of each branch cannot be minimized, and the radially adjacent welding spots cannot be guaranteed to belong to the same branch. In high voltage insulation technology, conventional methods of increasing the insulation level and breakdown voltage may employ the selection of insulation materials with higher dielectric constants, or increasing the conductor-to-conductor electrical gap. The motor design space size and the voltage platform need to meet the requirements, so that a gap increasing method is not feasible, miniaturization of the motor is not facilitated, and the cost of the motor is increased due to the adoption of a better insulating material.

Disclosure of Invention

In view of the foregoing, the present utility model provides a stator winding, a stator and a motor, so as to solve the above or other problems in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme: a stator winding having a slot number of 3 per phase per pole, any one phase winding comprising,

the first coil group comprises a plurality of first conductor groups which are sequentially arranged along the circumferential direction of the stator core, and the second coil group comprises a second conductor group which is sequentially arranged along the circumferential direction of the stator core;

at least one coil group III arranged on two adjacent radial layers of the stator core, wherein the coil group III is arranged between the coil group I and the coil group II and comprises a plurality of third conductor groups which are sequentially arranged along the circumferential direction of the stator core;

any phase winding comprises 3 branch windings connected in parallel, and a plurality of conductors of each branch winding, which are positioned in the same magnetic pole of the stator winding, are sequentially connected along the radial direction of the stator core;

the first conductor set, the second conductor set and the third conductor set comprise three conductors arranged in adjacent grooves, and pitches of the three conductors in the first conductor set, the second conductor set and the third conductor set are different or identical.

Further, the plurality of conductors of each branch winding are sequentially connected along the plurality of magnetic poles of the stator winding, and are sequentially connected once along the radial direction of the same magnetic pole of the stator winding.

Further, each branch winding is arranged in an S shape and spans a circle along the circumferential direction of the stator core.

Further, conductors of corresponding pitch types in the first conductor set and the second conductor set are located in different slots of the stator core;

the slots occupied by the first conductor set are identical to or at least two slots occupied by the second conductor set along the same radial direction of the stator core.

Further, the plurality of conductors of the first conductor group sequentially arranged along the circumferential direction of the stator core are sequentially at least a full-pitch conductor, a long-pitch conductor, and a short-pitch conductor, or the plurality of conductors of the first conductor group sequentially arranged along the circumferential direction of the stator core are sequentially at a full pitch.

Further, the plurality of conductors of the second conductor group sequentially arranged along the circumferential direction of the stator core are sequentially at least a long-pitch conductor, a short-pitch conductor, and a full-pitch conductor, or the plurality of conductors of the second conductor group sequentially arranged along the circumferential direction of the stator core are sequentially a full-pitch conductor.

Further, the plurality of conductors in the third conductor group, which are arranged along the circumferential direction of the stator core, are long-pitch conductors and/or short-pitch conductors and/or full-pitch conductors.

Further, the full pitch is 9, the long pitch is 10, and the short pitch is 8.

Further, the two welding ends of the conductors in the third conductor set extend along the circumferential direction of the stator core, and the extending directions are opposite and close to each other.

Further, on the welding end side of any one phase winding, the pitch between two welding ends of the phase welding of the radially adjacent two layers of the stator core is the full pitch and/or the long pitch and/or the short pitch.

Further, the number of radial layers of the stator core is an even number of layers equal to or greater than 4.

Further, in each of the branch windings, which are located in the same radial direction of the stator core, the lead end is connected to one welding end of one conductor of the outermost layer or the (outermost layer-1) layer, and the wire outlet end is connected to one welding end of one conductor of the (outermost layer-1) layer or the outermost layer.

A stator comprising a stator winding as described above.

An electric machine comprising a stator as described above.

By adopting the technical scheme, the stator winding is arranged on the same layer in the radial innermost layer and the radial outermost layer of the stator core, the conductor groups of the first coil group and the second coil group are arranged on the same layer, the conductors with three different pitches are arranged on the radial innermost layer and the radial outermost layer, the positions of slots occupied by the conductors with three different pitches in the conductor groups of the radial innermost layer are different from the positions of slots occupied by the conductors with three different pitches in the conductor groups of the radial outermost layer, a plurality of third coil groups are arranged between the radial outermost layer and the radial innermost layer, the third coil groups are arranged in two layers which are adjacent to each other in the radial direction, the conductor groups in the third coil groups are the same in pitch, or the conductor groups with different pitches are combined, the pitches between the welding ends of the corresponding two adjacent layers in the radial direction can be long pitch, short pitch or full pitch, the conductors of each branch winding are sequentially connected with the same in the radial direction of the stator core, the conductors of each branch winding are sequentially connected with each other along the radial direction of the stator core, the plurality of conductors of the branch windings are sequentially connected with each other along the same radial direction of the stator magnetic pole, and the electric motor has different dimensions, and the electric potential difference is reduced in the radial direction of the stator winding is increased, and the overall size is increased, the electric potential difference is increased, and the performance of the motor is improved. After the potential difference between two adjacent welding spots is reduced, the dielectric strength requirement can be met by adopting air insulation, so that the coating material on the welding spots can be removed, and the cost is reduced.

Drawings

FIG. 1 is a schematic diagram of the structure of a first conductor set according to some embodiments of the utility model;

FIG. 2 is a schematic diagram of the structure of a second conductor set according to some embodiments of the utility model;

FIG. 3 is a schematic structural view of a third conductor set according to some embodiments of the utility model;

FIG. 4 is another structural schematic of a third conductor set according to some embodiments of the utility model;

fig. 5 is a schematic view of yet another configuration of a third conductor set in accordance with some embodiments of the utility model;

fig. 6 is a plan-view development block diagram of a wire-plugging end of a one-phase winding of the first embodiment of the present utility model;

FIG. 7 is a plan-view developed block diagram of the welded ends of a phase winding of the first embodiment of the present utility model;

fig. 8 is a plan-view development block diagram of a wire-plugging end of a one-phase winding of the second embodiment of the present utility model;

FIG. 9 is a plan development view of the welded ends of the one-phase winding of the second embodiment of the present utility model;

fig. 10 is a plan-view developed block diagram of a wire-plugging end of a one-phase winding of the third embodiment of the present utility model;

FIG. 11 is a plan-view developed block diagram of the welded ends of a one-phase winding of a third embodiment of the present utility model;

fig. 12 is a plan-view development block diagram of a wire-plugging end of a one-phase winding of the fourth embodiment of the present utility model;

FIG. 13 is a plan development view of the welded end of a one-phase winding of a fourth embodiment of the utility model;

fig. 14 is a plan-view development block diagram of the wire-plugging end of the one-phase winding of the fifth embodiment of the present utility model;

FIG. 15 is a plan development view of the welded ends of the one-phase winding of the fifth embodiment of the present utility model;

FIG. 16 is a plan view of the wire insertion end of a six-phase winding of an embodiment of the present utility model;

FIG. 17 is a plan development view of the welded end of the one-phase winding of the sixth embodiment of the present utility model;

FIG. 18 is a plan view of the wire insertion end of a seven-phase winding of an embodiment of the present utility model;

FIG. 19 is a plan-view developed block diagram of the welded ends of the one-phase winding of the seventh embodiment of the present utility model;

FIG. 20 is a plan view of the expanded block diagram of the wire ends of the eighth phase winding of an embodiment of the present utility model;

FIG. 21 is a plan-view developed block diagram of the welded ends of a phase winding of an eighth embodiment of the utility model;

FIG. 22 is a plan view of the expanded block diagram of the wire ends of the nine phase windings of an embodiment of the present utility model;

FIG. 23 is a plan development view of the welded end of the one-phase winding of the ninth embodiment of the utility model;

Fig. 24 is a plan-view developed block diagram of the wire-plugging end of the ten-phase winding of the embodiment of the present utility model;

FIG. 25 is a plan-view developed block diagram of the welded ends of a phase winding of a tenth embodiment of the present utility model;

fig. 26 is a plan-view developed configuration diagram of a wire-plugging end of a one-phase winding of the eleventh embodiment of the present utility model;

FIG. 27 is a plan development view of the welded ends of the one-phase winding of the eleventh embodiment of the present utility model;

FIG. 28 is a plan view of the structure of the first embodiment of the utility model with the plug and weld ends of the one-phase winding combined;

fig. 29 is a plan-view development block diagram of the first leg winding of the one-phase winding of the first embodiment of the present utility model when the plug terminal and the weld terminal are combined;

FIG. 30 is a plan view of the second leg winding of the one-phase winding of the first embodiment of the present utility model with the plug and weld ends thereof joined;

FIG. 31 is a plan view showing an expanded configuration of the plug terminal and the weld terminal of the third leg winding of the one-phase winding of the first embodiment of the present utility model when they are combined together;

FIG. 32 is a plan view of an expanded configuration of the wire ends of a phase winding of a twelfth embodiment of the utility model;

Fig. 33 is a plan-view developed structural view of the welding end of the one-phase winding of the twelfth embodiment of the present utility model.

In the figure:

10. first conductor set 20, second conductor set 30, and third conductor set

100. Long pitch conductor 101, short pitch conductor 102, and full pitch conductor

Detailed Description

The utility model will be further described with reference to the drawings and the specific examples.

Fig. 1-33 show schematic structural diagrams of some embodiments of the present utility model, where the present embodiment relates to a stator winding, a stator, and a motor, and symmetrical structures are adopted among branches of the stator winding, so that a loop current problem caused by an asymmetrical structure is eliminated, an axial height of the stator winding is reduced, a manufacturing process is simplified, a production cost is reduced, and a processing efficiency is improved.

A stator winding comprising three phase windings, as shown in figures 1-7, with 3 slots per pole per phase, any phase winding comprising,

the first coil group and the second coil group are arranged along the circumferential direction of the stator core, the first coil group and the second coil group are arranged on the same layer along the radial direction of the stator core, the first coil group is positioned on the radially innermost layer of the stator core, the second coil group is positioned on the radially outermost layer of the stator core, or the first coil group is positioned on the radially outermost layer of the stator core, and the second coil group is positioned on the radially innermost layer of the stator core and is selected according to actual requirements;

The first coil group comprises a plurality of first conductor groups 10 which are sequentially arranged along the circumferential direction of the stator core, the first coil group is arranged in each groove of the innermost layer or the outermost layer of the stator core occupied by the phase winding, the second coil group comprises a plurality of second conductor groups 20 which are sequentially arranged along the circumferential direction of the stator core, the first conductor groups 10 are sequentially arranged along the circumferential direction of the stator core, the first coil group is constructed in an annular structure, and the second conductor groups 20 are sequentially arranged along the circumferential direction of the stator core, so that the second coil group is constructed in an annular structure;

at least one coil III arranged on two adjacent layers in the radial direction of the stator core, wherein the coil III is arranged along the circumferential direction of the stator core, the coil III is arranged between the coil I and the coil II along the radial direction of the stator core, the number of the coil III is multiple, and the coil groups III are sequentially arranged along the radial direction of the stator core; the third coil group comprises a plurality of third conductor groups 30 which are sequentially arranged along the circumferential direction of the stator core, the third conductor groups 30 are arranged in each groove of two adjacent radial layers of the stator core occupied by the phase winding, and the third coil group 30 is of an annular structure;

The first conductor set 10, the second conductor set 20 and the third conductor set 30 each include at least three conductors disposed in adjacent slots, and the plurality of conductors are sequentially disposed in adjacent slots along the circumferential direction of the stator core, and pitches of the plurality of conductors in the first conductor set 10 may be different or the same; the pitches of the plurality of conductors in the second conductor set 20 may be different or the same, and the plurality of conductors may be selectively set according to actual requirements; the pitches of the plurality of conductors in the third conductor set 30 may be the same, may be partially the same, or may be different, and may be selected and set according to actual requirements.

The plurality of conductors in the first conductor set 10 may be the same type of conductors, and welding ends of the plurality of conductors are the same along the circumferential extension direction of the stator core, or the plurality of conductors in the first conductor set 10 may also be different types of conductors, and the welding ends of the plurality of conductors are different along the circumferential extension direction of the stator core, and are selected according to actual requirements; the plurality of conductors in the second conductor set 20 may be the same type of conductors, and the welding ends of the plurality of conductors are the same along the circumferential extension direction of the stator core, or the plurality of conductors in the second conductor set 20 may also be different types of conductors, and the welding ends of the plurality of conductors are different along the circumferential extension direction of the stator core, and are selected according to practical requirements.

The plurality of conductors in the third conductor set 30 may be the same type of conductors, and the welding ends of the plurality of conductors are the same along the circumferential extension direction of the stator core, or the plurality of conductors in the third conductor set 30 may also be different types of conductors, and the welding ends of the plurality of conductors are different along the circumferential extension direction of the stator core, and are selected according to actual requirements.

In the present embodiment, it is preferable that the welding ends of the plurality of conductors in the third conductor set 30 are opposite and close to each other in the circumferential extending direction of the stator core.

The pitch type of the plurality of conductors in the first conductor set 10 is the same as the pitch type of the plurality of conductors in the second conductor set 20, and the conductors of the corresponding pitch type in the first conductor set 10 and the second conductor set 20 are located in different slots of the stator core.

As shown in fig. 1, in the coil group one, a plurality of conductors of the first conductor group 10, which are sequentially arranged in the circumferential direction of the stator core, are sequentially at least a full-pitch conductor 102, a long-pitch conductor 100, and a short-pitch conductor 101, such as: the first conductor set 10 includes three conductors in three adjacent slots along the circumferential direction of the stator core, the first in the slot being a full pitch conductor 102, the second in the slot being a long pitch conductor 100, and the third in the slot being a short pitch conductor 101.

The pitch of the full-pitch conductor 102 is 9, the pitch of the long-pitch conductor 100 is 10, and the pitch of the short-pitch conductor 101 is 8.

As shown in fig. 2, in the coil group two, a plurality of conductors of the second conductor group 20, which are sequentially arranged in the circumferential direction of the stator core, are sequentially at least a long-pitch conductor 100, a short-pitch conductor 101, and a full-pitch conductor 102, such as: the first conductor set 10 includes three conductors in three adjacent slots along the circumferential direction of the stator core, the first in the slot being a long-pitch conductor 100, the second in the slot being a short-pitch conductor 101, and the third in the slot being a full-pitch conductor 102.

The plurality of conductors in the first conductor set 10 and the plurality of conductors in the second conductor set 20 each include a long-pitch conductor 100, a short-pitch conductor 101, and a full-pitch conductor 102, but the positions of the slots in the circumferential direction of the stator core are different for the conductors of the same pitch, that is, the full-pitch conductor 102 in the first conductor set 10 and the full-pitch conductor 102 in the second conductor set 20 are located in circumferentially different slots of the positioning core, the long-pitch conductor 100 in the first conductor set 10 and the long-pitch conductor 100 in the second conductor set 20 are located in circumferentially different slots of the positioning core, the short-pitch conductor 101 in the first conductor set 10 and the short-pitch conductor 101 in the second conductor set 20 are located in circumferentially different slots of the positioning core, and the pitches of the conductors inserted in the slots in the first conductor set 10 and the conductors inserted in the slots in the second conductor set 20 are different in the same slot along the radial direction of the stator core.

Along the same radial direction of the stator core, the slots occupied by the first conductor set 10 are the same as the slots occupied by the second conductor set 20, and as shown in fig. 6, the slots occupied by the three conductors of the first conductor set 10 and the three conductors of the second conductor set 20 are 01 slots, 02 slots, 03 slots, 10 slots, 11 slots and 12 slots; alternatively, at least two slots are the same as the slots occupied by the second conductor set 20, and as shown in fig. 8, the slots occupied by the three conductors of the first conductor set 10 are 01 slots, 02 slots, 03 slots, 10 slots, 11 slots, 12 slots, and the slots occupied by the three conductors of the second conductor set 20 are 02 slots, 03 slots, 04 slots, 11 slots, 12 slots, 13 slots.

As shown in fig. 3 to 5, the plurality of conductors of the third conductor group 30 disposed along the circumferential direction of the stator core are long-pitch conductors 100 and/or short-pitch conductors 101 and/or full-pitch conductors 102, or the plurality of conductors of the third conductor group 30 may all be long-pitch conductors 100, or the plurality of conductors of the third conductor group 30 may all be short-pitch conductors 101, or the plurality of conductors of the third conductor group 30 may all be full-pitch conductors 102, or the plurality of conductors of the third conductor group 30 may include a plurality of long-pitch conductors 100 and a plurality of short-pitch conductors 101, or the plurality of conductors of the third conductor group 30 may include a plurality of long-pitch conductors 100 and a plurality of full-pitch conductors 102, or the plurality of conductors of the third conductor group 30 may include a plurality of short-pitch conductors 100, 101 and a plurality of full-pitch conductors 102, or a combination thereof, or the specific requirements may not be satisfied, or the specific requirements may be otherwise selected.

The plurality of coil groups three are arranged along the radial direction of the stator core, and the conductor pitches in the third conductor group 30 in the adjacent two coil groups three can be the same or different, and are selected according to actual requirements.

Along the axial direction of the stator core, at the welding end side of any phase winding, the pitch between two welding ends of two adjacent radial layers of the stator core, which are welded, is a whole pitch, a long pitch or a short pitch, which is selected according to actual requirements, and no specific requirements are made here. The pitches between two welding ends of two adjacent layers of phase welding are the same along the circumferential direction of the stator core, and the pitches between two welding ends of two adjacent layers of phase welding can be different or the same along the radial direction of the stator core, and are selected according to actual requirements.

The plurality of conductors in the first conductor set 10, the second conductor set 20 and the third conductor set 30 may be located in a corresponding plurality of adjacent slots in the same radial direction along the radial direction of the stator core, or the plurality of conductors in the first conductor set 10, the second conductor set 20 and the third conductor set 30 may not be entirely corresponding to the plurality of adjacent slots in the same radial direction, may be at least partially corresponding to the plurality of adjacent slots, and the plurality of adjacent slots occupied by the first conductor set 10, the second conductor set 20 and the third conductor set 30 are offset from each other.

The radial layer number of the stator core is an even number of layers which is greater than or equal to 4, the radial layer number of the stator core is selected according to actual requirements, and specific requirements are not made here.

In some embodiments, the number of slots per phase of each pole of the stator winding is 3, and any phase winding includes 3 branch windings connected in parallel, where a plurality of conductors of each branch winding located in the same magnetic pole of the stator winding are sequentially connected along a radial direction of the stator core, and may be sequentially connected along an outermost layer to an innermost layer direction, or may be sequentially connected along an innermost layer to an outermost layer direction.

The plurality of conductors in each branch winding are sequentially connected along a plurality of magnetic poles of the stator winding and are sequentially connected once along the radial direction of the same magnetic pole of the stator winding, and each branch winding is arranged in an S-shaped mode and spans a circle along the circumferential direction of the stator core.

Any phase winding comprises a plurality of branch windings, wherein each branch winding is positioned in the same radial direction of the stator core, a lead end is connected with one welding end of one conductor of the outermost layer or the (outermost layer-1) layer, a wire outlet end is connected with one welding end of one conductor of the (outermost layer-1) layer or the outermost layer, and the lead end and the wire outlet end are positioned at the outermost layer in the same radial direction of the stator core;

Each of the branch windings includes, in the circumferential direction of the stator core, one conductor of the first conductor group 10 provided in the radially innermost layer, one conductor of the second conductor group 20 provided in the radially outermost layer, and one conductor of the third conductor group 30 provided in the radially adjacent two layers, in each of the branch windings, one conductor of each of the first conductor groups 10 is located in the branch winding, in the coil group two, one conductor of each of the second conductor groups 20 is located in the branch winding, in the coil group three, one conductor of each of the third conductor groups 30 is located in the branch winding, and the lap winding of the conductors in the branch windings is performed; corresponding welding ends of two adjacent radial layers are connected at the welding ends of the branch windings; the welding ends are connected from the outermost layer to the innermost layer in the same radial direction of the stator core, the two corresponding welding ends are connected in the radial direction of the stator core, the second same radial direction adjacent to the same radial direction is from the innermost layer to the outermost layer in the same radial direction, the two corresponding welding ends are connected in the radial direction adjacent to the second same radial direction, the third same radial direction adjacent to the second same radial direction is from the outermost layer to the innermost layer in the same radial direction, the two corresponding welding ends are connected in the radial direction, … … sequentially and progressively progress along the circumferential direction of the stator core, the welding ends of all conductors are sequentially connected to form the branch winding structure, and each branch winding is in an S shape and spans a circle along the circumferential direction of the stator core. On the contrary, the connecting modes of two corresponding radially adjacent welding ends are the same in the same radial direction of the stator core from the innermost layer to the outermost layer.

In each branch winding, the other welding end of the first conductor connected with the lead end is connected with one welding end of the corresponding second conductor of the adjacent layer, the other welding end of the second conductor is connected with one welding end of the corresponding third conductor of the adjacent layer, the other welding end of the third conductor is connected with one welding end of the fourth conductor of the adjacent layer, … …, and the other welding end of the last conductor is connected with the outgoing line end.

A stator comprising a stator winding as described above.

An electric machine comprising a stator as described above.

The following description is made with reference to specific examples.

In some embodiments described below, the stator winding is mounted on a stator core having a plurality of slots spaced apart by a predetermined slot pitch along a circumferential direction of the stator core; the stator winding comprises three-phase windings, each phase of stator winding comprises a plurality of branch windings, and each phase slot of each pole is more than or equal to 2. In some embodiments described below, each phase of stator winding includes 3 branch windings, each pole has a slot count of 3 per phase, and the stator core has a slot count of 54, and the first conductor set 10, the second conductor set 20, and the third conductor set 30 each include three conductors.

Example 1

As shown in fig. 6-7 and fig. 28-31, the number of radial layers of the stator core is four, any one phase winding of the stator winding comprises a first coil group, a second coil group and a third coil group, the first coil group is arranged on a radial first layer of the stator core along the radial direction of the stator core, the third coil group is arranged on a radial second layer and a third layer of the stator core, and the second coil group is arranged on a radial fourth layer of the stator core;

in the first coil group, three first conductor groups 10 are sequentially arranged along the circumferential direction of the stator core, the first conductor groups 10 having three conductors therein, the first conductor being a long-pitch conductor 100, the second conductor being a short-pitch conductor 101, and the third conductor being a full-pitch conductor 102; the three first conductor groups 10 are arranged in this order in the circumferential direction of the stator core, the long-pitch conductors 100 in the first conductor group 10 are located in the 01 slots, 11 slots of the first layer, the short-pitch conductors 101 are located in the 02 slots, 10 slots of the first layer, the full-pitch conductors 102 are located in the 03 slots, 12 slots of the first layer, the long-pitch conductors 100 in the second first conductor group 10 are located in the 19 slots, 29 slots of the first layer, the short-pitch conductors 101 are located in the 20 slots, 28 slots of the first layer, the full-pitch conductors 102 are located in the 21 slots, 30 slots of the first layer, the long-pitch conductors 100 in the third first conductor group 10 are located in the 37 slots, 47 slots of the first layer, the short-pitch conductors 101 are located in the 38 slots, 46 slots of the first layer, and the full-pitch conductors 102 are located in the 39 slots, 48 slots of the first layer.

In the second coil group, three second conductor groups 20 are sequentially arranged along the circumferential direction of the stator core, the second conductor groups 20 having three conductors therein, the first conductor being a full-pitch conductor 102, the second conductor being a long-pitch conductor 100, and the third conductor being a short-pitch conductor 101; the three second conductor sets 20 are sequentially arranged along the circumferential direction of the stator core, the whole pitch conductor 102 in the first second conductor set 20 is positioned in the 01 slot and the 10 slot of the fourth layer, the long pitch conductor 100 is positioned in the 02 slot and the 12 slot of the fourth layer, and the short pitch conductor 101 is positioned in the 03 slot and the 11 slot of the fourth layer; the full pitch conductors 102 in the second conductor set 20 are located in 19 slots, 28 slots of the fourth layer, the long pitch conductors 100 are located in 20 slots, 30 slots of the fourth layer, and the short pitch conductors 101 are located in 21 slots, 29 slots of the fourth layer; the full pitch conductors 102 in the third second conductor set 20 are located in the 37 slots, 46 slots of the fourth layer, the long pitch conductors 100 are located in the 38 slots, 48 slots of the fourth layer, and the short pitch conductors 101 are located in the 39 slots, 47 slots of the fourth layer.

In the third coil group, six third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, three conductors are arranged in the third conductor groups 30, the three conductors are all full-pitch conductors 102, the three third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, a first full-pitch conductor 102 in the first third conductor group 30 is positioned in a 01 groove of the third layer and a 10 groove of the second layer, a second full-pitch conductor 102 is positioned in a 02 groove of the third layer and a 11 groove of the second layer, and the third full-pitch conductor 102 is positioned in a 03 groove of the third layer and a 12 groove of the second layer; the first full pitch conductor 102 in the second third conductor set 30 is located in the 10 slots of the third layer, the 19 slots of the second layer, the second full pitch conductor 102 is located in the 11 slots of the third layer, the 20 slots of the second layer, the third full pitch conductor 102 is located in the 12 slots of the third layer, the 21 slots of the second layer; the first full pitch conductor 102 in the third conductor set 30 is located in 19 slots of the third layer, 28 slots of the second layer, the second full pitch conductor 102 is located in 20 slots of the third layer, 29 slots of the second layer, and the third full pitch conductor 102 is located in 21 slots of the third layer, 30 slots of the second layer; the first full pitch conductor 102 in the fourth third conductor set 30 is located in the 28 slots of the third layer, the 37 slots of the second layer, the second full pitch conductor 102 is located in the 29 slots of the third layer, the 38 slots of the second layer, and the third full pitch conductor 102 is located in the 30 slots of the third layer, the 39 slots of the second layer; the first full pitch conductor 102 in the fifth third conductor set 30 is located in the 37 slots of the third layer, the 46 slots of the second layer, the second full pitch conductor 102 is located in the 38 slots of the third layer, the 47 slots of the second layer, and the third full pitch conductor 102 is located in the 39 slots of the third layer, the 48 slots of the second layer; the first full pitch conductor 102 in the sixth third conductor set 30 is located in the third layer 46 slot, the second layer 01 slot, the second full pitch conductor 102 is located in the third layer 47 slot, the second layer 02 slot, and the third full pitch conductor 102 is located in the third layer 48 slot, the second layer 03 slot.

And at the welding end side of the phase winding, welding two welding ends of two corresponding conductors of two adjacent radial layers, wherein the pitch between the two welding ends is the whole pitch, and the whole pitch is 9.

Example two

The difference between this embodiment and the implementation one is that: the pitches of the conductors of the third conductor set 30 in the third coil set are different, the slots in which the second conductor set 20 in the second coil set is located are different, and the pitches between the two soldered ends of the corresponding two conductors of the adjacent two layers on the soldered end side are different.

In the present embodiment, as shown in fig. 8 and 9, in the second coil group, three second conductor groups 20 are sequentially provided along the circumferential direction of the stator core, the second conductor groups 20 having three conductors therein, the first conductor being a full-pitch conductor 102, the second conductor being a long-pitch conductor 100, and the third conductor being a short-pitch conductor 101; the three second conductor groups 20 are arranged in this order in the circumferential direction of the stator core, the full-pitch conductor 102 in the first second conductor group 20 being located in 02 slots, 11 slots, the long-pitch conductor 100 being located in 03 slots, 13 slots, the short-pitch conductor 101 being located in 04 slots, 12 slots, the full-pitch conductor 102 in the second conductor group 20 being located in 20 slots, 29 slots, the long-pitch conductor 100 being located in 21 slots, 31 slots, the short-pitch conductor 101 being located in 22 slots, 30 slots, the full-pitch conductor 102 in the third second conductor group 20 being located in 38 slots, 47 slots, the long-pitch conductor 100 being located in 39 slots, 49 slots, and the short-pitch conductor 101 being located in 40 slots, 48 slots.

In the third coil group, six third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, three conductors are arranged in the third conductor groups 30, the three conductors are all long-pitch conductors 100, the three third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, a first long-pitch conductor 100 in the first third conductor group 30 is positioned in a 01 groove of the third layer and a 11 groove of the second layer, a second long-pitch conductor 100 is positioned in a 02 groove of the third layer and a 12 groove of the second layer, and a third long-pitch conductor 100 is positioned in a 03 groove of the third layer and a 13 groove of the second layer; the first long pitch conductor 100 in the second third conductor set 30 is located in the 10 slots of the third layer, the 20 slots of the second layer, the second long pitch conductor 100 is located in the 11 slots of the third layer, the 21 slots of the second layer, and the third long pitch conductor 100 is located in the 12 slots of the third layer, the 22 slots of the second layer; the first long pitch conductor 100 in the third conductor set 30 is located in 19 slots of the third layer, 29 slots of the second layer, the second long pitch conductor 100 is located in 20 slots of the third layer, 30 slots of the second layer, and the third long pitch conductor 100 is located in 21 slots of the third layer, 31 slots of the second layer; the first long pitch conductor 100 in the fourth third conductor set 30 is located in the 28 slots of the third layer, the 38 slots of the second layer, the second long pitch conductor 100 is located in the 29 slots of the third layer, the 39 slots of the second layer, and the third long pitch conductor 100 is located in the 30 slots of the third layer, the 40 slots of the second layer; the first long-pitch conductor 100 in the fifth third conductor set 30 is located in 37 slots of the third layer, 47 slots of the second layer, the second long-pitch conductor 100 is located in 38 slots of the third layer, 48 slots of the second layer, and the third long-pitch conductor 100 is located in 39 slots of the third layer, 49 slots of the second layer; the first long-pitch conductor 100 in the sixth third conductor set 30 is located in the third layer 46 slot, the second layer 02 slot, the second long-pitch conductor 100 is located in the third layer 47 slot, the second layer 03 slot, and the third long-pitch conductor 100 is located in the third layer 48 slot, the second layer 04 slot.

And at the welding end side of the phase winding, welding two welding ends of two corresponding conductors of two adjacent radial layers, wherein the pitch between the two welding ends is long, and the long pitch is 10.

The other structures are the same and will not be described in detail here.

Example III

The difference between this embodiment and the first embodiment is that:

as shown in fig. 10 and 11, in the first coil group, three first conductor groups 10 are sequentially arranged along the circumferential direction of the stator core, the first conductor groups 10 having three conductors therein, the first conductor being a long-pitch conductor 100, the second conductor being a short-pitch conductor 101, and the third conductor being a full-pitch conductor 102; the three first conductor groups 10 are arranged in this order in the circumferential direction of the stator core, the long-pitch conductors 100 in the first conductor group 10 are located in 02 slots, 12 slots of the first layer, the short-pitch conductors 101 are located in 03 slots, 11 slots of the first layer, the full-pitch conductors 102 are located in 04 slots, 13 slots of the first layer, the long-pitch conductors 100 in the second first conductor group 10 are located in 20 slots, 30 slots of the first layer, the short-pitch conductors 101 are located in 21 slots, 29 slots of the first layer, the full-pitch conductors 102 are located in 22 slots, 31 slots of the first layer, the long-pitch conductors 100 in the third first conductor group 10 are located in 38 slots, 48 slots of the first layer, the short-pitch conductors 101 are located in 39 slots, 47 slots of the first layer, and the full-pitch conductors 102 are located in 40 slots, 49 slots of the first layer.

In the third coil group, six third conductor groups 30 are sequentially arranged in the circumferential direction of the stator core, three conductors are provided in the third conductor groups 30, each of the three conductors is a short-pitch conductor 101, the three third conductor groups 30 are sequentially arranged in the circumferential direction of the stator core, the first short-pitch conductor 101 in the first third conductor group 30 is located in 02 slots of the third layer, 10 slots of the second layer, the second short-pitch conductor 101 is located in 03 slots of the third layer, 11 slots of the second layer, and the third short-pitch conductor 101 is located in 04 slots of the third layer, 12 slots of the second layer; the first short-pitch conductor 101 in the second third conductor set 30 is located in 11 slots of the third layer, 19 slots of the second layer, the second short-pitch conductor 101 is located in 12 slots of the third layer, 20 slots of the second layer, and the third short-pitch conductor 101 is located in 13 slots of the third layer, 21 slots of the second layer; the first short-pitch conductor 101 in the third conductor set 30 is located in the 20 slots of the third layer, the 28 slots of the second layer, the second short-pitch conductor 101 is located in the 21 slots of the third layer, the 29 slots of the second layer, and the third short-pitch conductor 101 is located in the 22 slots of the third layer, the 30 slots of the second layer; the first short-pitch conductor 101 in the fourth third conductor set 30 is located in 29 slots of the third layer, 37 slots of the second layer, the second short-pitch conductor 101 is located in 30 slots of the third layer, 38 slots of the second layer, and the third short-pitch conductor 101 is located in 31 slots of the third layer, 39 slots of the second layer; the first short-pitch conductor 101 in the fifth third conductor set 30 is located in 38 slots of the third layer, 46 slots of the second layer, the second short-pitch conductor 101 is located in 39 slots of the third layer, 47 slots of the second layer, and the third short-pitch conductor 101 is located in 40 slots of the third layer, 48 slots of the second layer; the first short-pitch conductor 101 in the sixth third conductor set 30 is located in the third layer 47 slots, the second layer 01 slots, the second short-pitch conductor 101 is located in the third layer 48 slots, the second layer 02 slots, and the third short-pitch conductor 101 is located in the third layer 49 slots, the second layer 03 slots.

On the welding end side of the phase winding, two welding ends of two corresponding conductors of two radially adjacent layers are welded, and the pitch between the two welding ends of the two phases is short pitch, and the short pitch is 8.

The other structures are the same and will not be described in detail here.

Example IV

This embodiment differs from the first embodiment in that:

as shown in fig. 12 and 13, in the second coil group, three second conductor groups 20 are sequentially arranged along the circumferential direction of the stator core, the second conductor groups 20 having three conductors therein, the first conductor being a full-pitch conductor 102, the second conductor being a long-pitch conductor 100, and the third conductor being a short-pitch conductor 101; the three second conductor groups 20 are arranged in this order in the circumferential direction of the stator core, the full-pitch conductor 102 in the first second conductor group 20 being located in 02 slots, 11 slots, the long-pitch conductor 100 being located in 03 slots, 13 slots, the short-pitch conductor 101 being located in 04 slots, 12 slots, the full-pitch conductor 102 in the second conductor group 20 being located in 20 slots, 29 slots, the long-pitch conductor 100 being located in 21 slots, 31 slots, the short-pitch conductor 101 being located in 22 slots, 30 slots, the full-pitch conductor 102 in the third second conductor group 20 being located in 38 slots, 47 slots, the long-pitch conductor 100 being located in 39 slots, 49 slots, and the short-pitch conductor 101 being located in 40 slots, 48 slots.

The other structures are the same and will not be described in detail here.

Example five

This embodiment differs from the first embodiment in that:

as shown in fig. 14 and 15, in the first coil group, three first conductor groups 10 are sequentially arranged along the circumferential direction of the stator core, the first conductor groups 10 having three conductors therein, the first conductor being a long-pitch conductor 100, the second conductor being a short-pitch conductor 101, and the third conductor being a full-pitch conductor 102; the three first conductor groups 10 are arranged in this order in the circumferential direction of the stator core, the long-pitch conductors 100 in the first conductor group 10 are located in 02 slots, 12 slots of the first layer, the short-pitch conductors 101 are located in 03 slots, 11 slots of the first layer, the full-pitch conductors 102 are located in 04 slots, 13 slots of the first layer, the long-pitch conductors 100 in the second first conductor group 10 are located in 20 slots, 30 slots of the first layer, the short-pitch conductors 101 are located in 21 slots, 29 slots of the first layer, the full-pitch conductors 102 are located in 22 slots, 31 slots of the first layer, the long-pitch conductors 100 in the third first conductor group 10 are located in 38 slots, 48 slots of the first layer, the short-pitch conductors 101 are located in 39 slots, 47 slots of the first layer, and the full-pitch conductors 102 are located in 40 slots, 49 slots of the first layer.

The other structures are the same and will not be described in detail here.

Example six

As shown in fig. 16 and 17, the number of radial layers of the stator core is six, any one phase winding of the stator winding comprises a first coil group, a second coil group and two third coil groups, the first coil group is arranged on a radial first layer of the stator core along the radial direction of the stator core, the third coil group is arranged on a radial second layer, a third layer, a fourth layer and a fifth layer of the stator core, and the second coil group is arranged on a radial sixth layer of the stator core;

In the second coil group, three second conductor groups 20 are sequentially arranged along the circumferential direction of the stator core, the second conductor groups 20 having three conductors therein, the first conductor being a full-pitch conductor 102, the second conductor being a long-pitch conductor 100, and the third conductor being a short-pitch conductor 101; the three second conductor groups 20 are arranged in this order in the circumferential direction of the stator core, the full-pitch conductor 102 in the first second conductor group 20 being located in 02 slots, 11 slots of the sixth layer, the long-pitch conductor 100 being located in 03 slots, 13 slots of the sixth layer, the short-pitch conductor 101 being located in 04 slots, 12 slots of the sixth layer, the full-pitch conductor 102 in the second conductor group 20 being located in 20 slots, 29 slots of the sixth layer, the long-pitch conductor 100 being located in 21 slots, 31 slots of the sixth layer, the short-pitch conductor 101 being located in 22 slots, 30 slots of the sixth layer, the full-pitch conductor 102 in the third second conductor group 20 being located in 38 slots, 47 slots of the sixth layer, the long-pitch conductor 100 being located in 39 slots, 49 slots of the sixth layer, the short-pitch conductor 101 being located in 40 slots, 48 slots of the sixth layer.

In the first coil group III, six third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, three conductors are arranged in the third conductor groups 30, the three conductors are all full-pitch conductors 102, the three third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, a first full-pitch conductor 102 in the first third conductor group 30 is positioned in a 01 groove of the third layer and a 10 groove of the second layer, a second full-pitch conductor 102 is positioned in a 02 groove of the third layer and a 11 groove of the second layer, and the third full-pitch conductor 102 is positioned in a 03 groove of the third layer and a 12 groove of the second layer; the first full pitch conductor 102 in the second third conductor set 30 is located in the 10 slots of the third layer, the 19 slots of the second layer, the second full pitch conductor 102 is located in the 11 slots of the third layer, the 20 slots of the second layer, the third full pitch conductor 102 is located in the 12 slots of the third layer, the 21 slots of the second layer; the first full pitch conductor 102 in the third conductor set 30 is located in 19 slots of the third layer, 28 slots of the second layer, the second full pitch conductor 102 is located in 20 slots of the third layer, 29 slots of the second layer, and the third full pitch conductor 102 is located in 21 slots of the third layer, 30 slots of the second layer; the first full pitch conductor 102 in the fourth third conductor set 30 is located in the 28 slots of the third layer, the 37 slots of the second layer, the second full pitch conductor 102 is located in the 29 slots of the third layer, the 38 slots of the second layer, and the third full pitch conductor 102 is located in the 30 slots of the third layer, the 39 slots of the second layer; the first full pitch conductor 102 in the fifth third conductor set 30 is located in the 37 slots of the third layer, the 46 slots of the second layer, the second full pitch conductor 102 is located in the 38 slots of the third layer, the 47 slots of the second layer, and the third full pitch conductor 102 is located in the 39 slots of the third layer, the 48 slots of the second layer; the first full pitch conductor 102 in the sixth third conductor set 30 is located in the third layer 46 slot, the second layer 01 slot, the second full pitch conductor 102 is located in the third layer 47 slot, the second layer 02 slot, and the third full pitch conductor 102 is located in the third layer 48 slot, the second layer 03 slot.

In the second coil group III, six third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, three conductors are arranged in the third conductor groups 30, the three conductors are all full-pitch conductors 102, the three third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, a first full-pitch conductor 102 in the first third conductor group 30 is positioned in a 02 groove of a fifth layer and a 11 groove of a fourth layer, a second full-pitch conductor 102 is positioned in a 03 groove of the fifth layer and a 12 groove of the fourth layer, and the third full-pitch conductor 102 is positioned in a 04 groove of the fifth layer and a 13 groove of the fourth layer; the first full pitch conductor 102 in the second third conductor set 30 is located in 11 slots of the fifth layer and 20 slots of the fourth layer, the second full pitch conductor 102 is located in 12 slots of the fifth layer and 21 slots of the fourth layer, and the third full pitch conductor 102 is located in 13 slots of the fifth layer and 22 slots of the fourth layer; the first full pitch conductor 102 in the third conductor set 30 is located in the 20 slots of the fifth layer and the 29 slots of the fourth layer, the second full pitch conductor 102 is located in the 21 slots of the fifth layer and the 30 slots of the fourth layer, and the third full pitch conductor 102 is located in the 22 slots of the fifth layer and the 31 slots of the fourth layer; the first full pitch conductor 102 in the fourth third conductor set 30 is located in the 29 slots of the fifth layer and the 38 slots of the fourth layer, the second full pitch conductor 102 is located in the 30 slots of the fifth layer and the 39 slots of the fourth layer, and the third full pitch conductor 102 is located in the 31 slots of the fifth layer and the 40 slots of the fourth layer; the first full pitch conductor 102 in the fifth third conductor set 30 is located in the 38 slots of the fifth layer and the 47 slots of the fourth layer, the second full pitch conductor 102 is located in the 39 slots of the fifth layer and the 48 slots of the fourth layer, and the third full pitch conductor 102 is located in the 40 slots of the fifth layer and the 49 slots of the fourth layer; the first full pitch conductor 102 in the sixth third conductor set 30 is located in the fifth layer 47 slots, the fourth layer 02 slots, the second full pitch conductor 102 is located in the fifth layer 48 slots, the fourth layer 03 slots, and the third full pitch conductor 102 is located in the fifth layer 49 slots, the fourth layer 04 slots.

And at the welding end side of the phase winding, two welding ends of two corresponding conductors of two radially adjacent layers are welded, the pitch between the two welding ends of the two radially third layer and the fourth layer is a long pitch, the long pitch is 10, the pitches between the two welding ends of the two radially adjacent layers are all full pitches, and the full pitch is 9.

Implementation of the embodiments seventh embodiment of the invention

The present embodiment is different from embodiment six in that:

as shown in fig. 18 and 19, in the first coil group, three first conductor groups 10 are sequentially arranged along the circumferential direction of the stator core, the first conductor groups 10 having three conductors therein, the first conductor being a long-pitch conductor 100, the second conductor being a short-pitch conductor 101, and the third conductor being a full-pitch conductor 102; the three first conductor groups 10 are arranged in this order in the circumferential direction of the stator core, the long-pitch conductors 100 in the first conductor group 10 are located in 02 slots, 12 slots of the first layer, the short-pitch conductors 101 are located in 03 slots, 11 slots of the first layer, the full-pitch conductors 102 are located in 04 slots, 13 slots of the first layer, the long-pitch conductors 100 in the second first conductor group 10 are located in 20 slots, 30 slots of the first layer, the short-pitch conductors 101 are located in 21 slots, 29 slots of the first layer, the full-pitch conductors 102 are located in 22 slots, 31 slots of the first layer, the long-pitch conductors 100 in the third first conductor group 10 are located in 38 slots, 48 slots of the first layer, the short-pitch conductors 101 are located in 39 slots, 47 slots of the first layer, and the full-pitch conductors 102 are located in 40 slots, 49 slots of the first layer.

In the second coil group, three second conductor groups 20 are sequentially arranged along the circumferential direction of the stator core, the second conductor groups 20 having three conductors therein, the first conductor being a full-pitch conductor 102, the second conductor being a long-pitch conductor 100, and the third conductor being a short-pitch conductor 101; the three second conductor groups 20 are arranged in this order in the circumferential direction of the stator core, the full-pitch conductor 102 in the first second conductor group 20 being located in the 01 slot, 10 slot, the long-pitch conductor 100 being located in the 02 slot, 12 slot, the short-pitch conductor 101 being located in the 03 slot, 11 slot, the full-pitch conductor 102 in the second conductor group 20 being located in the 19 slot, 28 slot, the long-pitch conductor 100 being located in the 20 slot, 30 slot, the short-pitch conductor 101 being located in the 21 slot, 29 slot, the full-pitch conductor 102 in the third second conductor group 20 being located in the 37 slot, 46 slot, the long-pitch conductor 100 being located in the 38 slot, 48 slot, and the short-pitch conductor 101 being located in the 39 slot, 47 slot.

In the first coil group III, six third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, three conductors are arranged in the third conductor groups 30, the three conductors are all full-pitch conductors 102, the three third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, a first full-pitch conductor 102 in the first third conductor group 30 is positioned in a 02 groove of the third layer and a 11 groove of the second layer, a second full-pitch conductor 102 is positioned in a 03 groove of the third layer and a 12 groove of the second layer, and the third full-pitch conductor 102 is positioned in a 04 groove of the third layer and a 13 groove of the second layer; the first full pitch conductor 102 in the second third conductor set 30 is located in 11 slots of the third layer, 20 slots of the second layer, the second full pitch conductor 102 is located in 12 slots of the third layer, 21 slots of the second layer, and the third full pitch conductor 102 is located in 13 slots of the third layer, 22 slots of the second layer; the first full pitch conductor 102 in the third conductor set 30 is located in the 20 slots of the third layer, the 29 slots of the second layer, the second full pitch conductor 102 is located in the 21 slots of the third layer, the 30 slots of the second layer, the third full pitch conductor 102 is located in the 22 slots of the third layer, the 31 slots of the second layer; the first full pitch conductor 102 in the fourth third conductor set 30 is located in the 29 slots of the third layer, the 38 slots of the second layer, the second full pitch conductor 102 is located in the 30 slots of the third layer, the 39 slots of the second layer, and the third full pitch conductor 102 is located in the 31 slots of the third layer, the 40 slots of the second layer; the first full pitch conductor 102 in the fifth third conductor set 30 is located in the 38 slots of the third layer, the 47 slots of the second layer, the second full pitch conductor 102 is located in the 39 slots of the third layer, the 48 slots of the second layer, and the third full pitch conductor 102 is located in the 40 slots of the third layer, the 49 slots of the second layer; the first full pitch conductor 102 in the sixth third conductor set 30 is located in the third layer 47 slots, the second layer 02 slots, the second full pitch conductor 102 is located in the third layer 48 slots, the second layer 03 slots, and the third full pitch conductor 102 is located in the third layer 49 slots, the second layer 04 slots.

In the second coil group III, six third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, three conductors are arranged in the third conductor groups 30, the three conductors are all full-pitch conductors 102, the three third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, a first full-pitch conductor 102 in the first third conductor group 30 is positioned in a 01 groove of a fifth layer and a 10 groove of a fourth layer, a second full-pitch conductor 102 is positioned in a 02 groove of the fifth layer and a 11 groove of the fourth layer, and the third full-pitch conductor 102 is positioned in a 03 groove of the fifth layer and a 12 groove of the fourth layer; the first full pitch conductor 102 in the second third conductor set 30 is located in the 10 slots of the fifth layer and the 19 slots of the fourth layer, the second full pitch conductor 102 is located in the 11 slots of the fifth layer and the 20 slots of the fourth layer, and the third full pitch conductor 102 is located in the 12 slots of the fifth layer and the 21 slots of the fourth layer; the first full pitch conductor 102 in the third conductor set 30 is located in 19 slots of the fifth layer, 28 slots of the fourth layer, the second full pitch conductor 102 is located in 20 slots of the fifth layer, 29 slots of the fourth layer, and the third full pitch conductor 102 is located in 21 slots of the fifth layer, 30 slots of the fourth layer; the first full pitch conductor 102 in the fourth third conductor set 30 is located in the fifth layer 28 slots, the fourth layer 37 slots, the second full pitch conductor 102 is located in the fifth layer 29 slots, the fourth layer 38 slots, and the third full pitch conductor 102 is located in the fifth layer 30 slots, the fourth layer 39 slots; the first full pitch conductor 102 in the fifth third conductor set 30 is located in the 37 slots of the fifth layer and the 46 slots of the fourth layer, the second full pitch conductor 102 is located in the 38 slots of the fifth layer and the 47 slots of the fourth layer, and the third full pitch conductor 102 is located in the 39 slots of the fifth layer and the 48 slots of the fourth layer; the first full pitch conductor 102 in the sixth third conductor set 30 is located in the fifth layer 46 slot, the fourth layer 01 slot, the second full pitch conductor 102 is located in the fifth layer 47 slot, the fourth layer 02 slot, and the third full pitch conductor 102 is located in the fifth layer 48 slot, the fourth layer 03 slot.

And at the welding end side of the phase winding, two welding ends of two corresponding conductors of two radially adjacent layers are welded, the pitch between the two welding ends of the two radially adjacent layers of the third layer and the fourth layer is short pitch, the short pitch is 8, the pitches between the two welding ends of the two radially adjacent layers are all whole pitch, and the whole pitch is 9.

The other structures are the same and will not be described in detail here.

Example eight

As shown in fig. 20 and 21, the number of radial layers of the stator core is eight, any one phase winding of the stator winding includes a first coil group, a second coil group and three third coil groups, the first coil group is arranged on a radial first layer of the stator core along the radial direction of the stator core, the third coil group is arranged on a radial second layer, a third layer, a fourth layer, a fifth layer, a sixth layer and a seventh layer of the stator core, and the second coil group is arranged on a radial eighth layer of the stator core;

In the second coil group, three second conductor groups 20 are sequentially arranged along the circumferential direction of the stator core, the second conductor groups 20 having three conductors therein, the first conductor being a full-pitch conductor 102, the second conductor being a long-pitch conductor 100, and the third conductor being a short-pitch conductor 101; the three second conductor groups 20 are arranged in this order in the circumferential direction of the stator core, the full-pitch conductor 102 in the first second conductor group 20 being located in 02 slots, 11 slots of the eighth layer, the long-pitch conductor 100 being located in 03 slots, 13 slots of the eighth layer, the short-pitch conductor 101 being located in 04 slots, 12 slots of the eighth layer, the full-pitch conductor 102 in the second conductor group 20 being located in 20 slots, 29 slots of the eighth layer, the long-pitch conductor 100 being located in 21 slots, 31 slots of the eighth layer, the short-pitch conductor 101 being located in 22 slots, 30 slots of the eighth layer, the full-pitch conductor 102 in the third second conductor group 20 being located in 38 slots, 47 slots of the eighth layer, the long-pitch conductor 100 being located in 39 slots, 49 slots of the eighth layer, the short-pitch conductor 101 being located in 40 slots, 48 slots of the eighth layer.

In the second coil group three, six third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, three conductors are provided in the third conductor groups 30, each of the three conductors is a short-pitch conductor 101, the three third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, the first short-pitch conductor 101 in the first third conductor group 30 is located in 02 slots of the fifth layer, 10 slots of the fourth layer, the second short-pitch conductor 101 is located in 03 slots of the fifth layer, 11 slots of the fourth layer, and the third short-pitch conductor 101 is located in 04 slots of the fifth layer, 12 slots of the fourth layer; the first short-pitch conductor 101 in the second third conductor set 30 is located in 11 slots of the fifth layer, 19 slots of the fourth layer, the second short-pitch conductor 101 is located in 12 slots of the fifth layer, 20 slots of the fourth layer, and the third short-pitch conductor 101 is located in 13 slots of the fifth layer, 21 slots of the fourth layer; the first short-pitch conductor 101 in the third conductor set 30 is located in 20 slots of the fifth layer, 28 slots of the fourth layer, the second short-pitch conductor 101 is located in 21 slots of the fifth layer, 29 slots of the fourth layer, and the third short-pitch conductor 101 is located in 22 slots of the fifth layer, 30 slots of the fourth layer; the first short-pitch conductor 101 in the fourth third conductor set 30 is located in 29 slots of the fifth layer, 37 slots of the fourth layer, the second short-pitch conductor 101 is located in 30 slots of the fifth layer, 38 slots of the fourth layer, and the third short-pitch conductor 101 is located in 31 slots of the fifth layer, 39 slots of the fourth layer; the first short-pitch conductor 101 in the fifth third conductor set 30 is located in 38 slots of the fifth layer, 46 slots of the fourth layer, the second short-pitch conductor 101 is located in 39 slots of the fifth layer, 47 slots of the fourth layer, and the third short-pitch conductor 101 is located in 40 slots of the fifth layer, 48 slots of the fourth layer; the first short-pitch conductor 101 in the sixth third conductor set 30 is located in the fifth layer 47 slots, the fourth layer 01 slots, the second short-pitch conductor 101 is located in the fifth layer 48 slots, the fourth layer 02 slots, and the third short-pitch conductor 101 is located in the fifth layer 49 slots, the fourth layer 03 slots.

In the third coil group III, six third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, three conductors are arranged in the third conductor groups 30, the three conductors are all full-pitch conductors 102, the three third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, a first full-pitch conductor 102 in the first third conductor group 30 is positioned in a 02 slot of a seventh layer and an 11 slot of a sixth layer, a second full-pitch conductor 102 is positioned in a 03 slot of the seventh layer and a 12 slot of the sixth layer, and the third full-pitch conductor 102 is positioned in a 04 slot of the seventh layer and a 13 slot of the sixth layer; the first full pitch conductor 102 in the second third conductor set 30 is located in 11 slots of the seventh layer, 20 slots of the sixth layer, the second full pitch conductor 102 is located in 12 slots of the seventh layer, 21 slots of the sixth layer, and the third full pitch conductor 102 is located in 13 slots of the seventh layer, 22 slots of the sixth layer; the first full pitch conductor 102 in the third conductor set 30 is located in the seventh layer 20 slots, the sixth layer 29 slots, the second full pitch conductor 102 is located in the seventh layer 21 slots, the sixth layer 30 slots, the third full pitch conductor 102 is located in the seventh layer 22 slots, the sixth layer 31 slots; the first full pitch conductor 102 in the fourth third conductor set 30 is located in the 29 slots of the seventh layer and the 38 slots of the sixth layer, the second full pitch conductor 102 is located in the 30 slots of the seventh layer and the 39 slots of the sixth layer, and the third full pitch conductor 102 is located in the 31 slots of the seventh layer and the 40 slots of the sixth layer; the first full pitch conductor 102 in the fifth third conductor set 30 is located in the seventh layer 38 slot, the sixth layer 47 slot, the second full pitch conductor 102 is located in the seventh layer 39 slot, the sixth layer 48 slot, and the third full pitch conductor 102 is located in the seventh layer 40 slot, the sixth layer 49 slot; the first full pitch conductor 102 in the sixth third conductor set 30 is located in the seventh layer 47 slot, the sixth layer 02 slot, the second full pitch conductor 102 is located in the seventh layer 48 slot, the sixth layer 03 slot, and the third full pitch conductor 102 is located in the seventh layer 49 slot, the sixth layer 04 slot.

And at the welding end side of the phase winding, welding the two welding ends of the two corresponding conductors of the two radially adjacent layers, wherein the pitch between the two welding ends of the two radially adjacent layers is the whole pitch, and the whole pitch is 9.

Example nine

In this embodiment, the pitch of the conductors in the third conductor set 30 in the second coil set three is different than in the eighth embodiment, and the slots occupied by the first, third and second coil sets are different and the others are the same.

In the present embodiment, as shown in fig. 22 and 23, in the first coil group, three first conductor groups 10 are sequentially provided along the circumferential direction of the stator core, the first conductor groups 10 having three conductors therein, the first conductor being a long-pitch conductor 100, the second conductor being a short-pitch conductor 101, and the third conductor being a full-pitch conductor 102; the three first conductor groups 10 are arranged in this order in the circumferential direction of the stator core, the long-pitch conductors 100 in the first conductor group 10 are located in 02 slots, 12 slots of the first layer, the short-pitch conductors 101 are located in 03 slots, 11 slots of the first layer, the full-pitch conductors 102 are located in 04 slots, 13 slots of the first layer, the long-pitch conductors 100 in the second first conductor group 10 are located in 20 slots, 30 slots of the first layer, the short-pitch conductors 101 are located in 21 slots, 29 slots of the first layer, the full-pitch conductors 102 are located in 22 slots, 31 slots of the first layer, the long-pitch conductors 100 in the third first conductor group 10 are located in 38 slots, 48 slots of the first layer, the short-pitch conductors 101 are located in 39 slots, 47 slots of the first layer, and the full-pitch conductors 102 are located in 40 slots, 49 slots of the first layer.

In the first coil group III, six third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, three conductors are arranged in the third conductor groups 30, the three conductors are all full-pitch conductors 102, the three third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, a first full-pitch conductor 102 in the first third conductor group 30 is positioned in a 02 groove of the third layer and a 11 groove of the second layer, a second full-pitch conductor 102 is positioned in a 03 groove of the third layer and a 12 groove of the second layer, and the third full-pitch conductor 102 is positioned in a 04 groove of the third layer and a 13 groove of the second layer; the first full pitch conductor 102 in the second third conductor set 30 is located in 11 slots of the third layer, 20 slots of the second layer, the second full pitch conductor 102 is located in 12 slots of the third layer, 21 slots of the second layer, and the third full pitch conductor 102 is located in 13 slots of the third layer, 22 slots of the second layer; the first full pitch conductor 102 in the third conductor set 30 is located in the 18 slots of the third layer, the 29 slots of the second layer, the second full pitch conductor 102 is located in the 21 slots of the third layer, the 28 slots of the second layer, and the third full pitch conductor 102 is located in the 22 slots of the third layer, the 31 slots of the second layer; the first full pitch conductor 102 in the fourth third conductor set 30 is located in the 29 slots of the third layer, the 38 slots of the second layer, the second full pitch conductor 102 is located in the 30 slots of the third layer, the 37 slots of the second layer, and the third full pitch conductor 102 is located in the 31 slots of the third layer, the 38 slots of the second layer; the first full pitch conductor 102 in the fifth third conductor set 30 is located in the 38 slots of the third layer, the 47 slots of the second layer, the second full pitch conductor 102 is located in the 39 slots of the third layer, the 48 slots of the second layer, and the third full pitch conductor 102 is located in the 40 slots of the third layer, the 49 slots of the second layer; the first full pitch conductor 102 in the sixth third conductor set 30 is located in the third layer 47 slots, the second layer 02 slots, the second full pitch conductor 102 is located in the third layer 48 slots, the second layer 03 slots, and the third full pitch conductor 102 is located in the third layer 49 slots, the second layer 04 slots.

In the second coil group III, six third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, three conductors are arranged in the third conductor groups 30, the three conductors are all long-pitch conductors 100, the three third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, a first long-pitch conductor 100 in the first third conductor group 30 is positioned in a 01 groove of a fifth layer and a 11 groove of a fourth layer, a second long-pitch conductor 100 is positioned in a 02 groove of the fifth layer and a 12 groove of the fourth layer, and a third long-pitch conductor 100 is positioned in a 03 groove of the fifth layer and a 13 groove of the fourth layer; the first long-pitch conductor 100 in the second third conductor set 30 is located in the 10 slots of the fifth layer and the 20 slots of the fourth layer, the second long-pitch conductor 100 is located in the 11 slots of the fifth layer and the 21 slots of the fourth layer, and the third long-pitch conductor 100 is located in the 12 slots of the fifth layer and the 22 slots of the fourth layer; the first long-pitch conductor 100 in the third conductor set 30 is located in 19 slots of the fifth layer, 29 slots of the fourth layer, the second long-pitch conductor 100 is located in 20 slots of the fifth layer, 30 slots of the fourth layer, and the third long-pitch conductor 100 is located in 21 slots of the fifth layer, 31 slots of the fourth layer; the first long-pitch conductor 100 in the fourth third conductor set 30 is located in the 28 slots of the fifth layer, the 38 slots of the fourth layer, the second long-pitch conductor 100 is located in the 29 slots of the fifth layer, the 39 slots of the fourth layer, and the third long-pitch conductor 100 is located in the 30 slots of the fifth layer, the 40 slots of the fourth layer; the first long-pitch conductor 100 in the fifth third conductor set 30 is located in 37 slots of the fifth layer, 47 slots of the fourth layer, the second long-pitch conductor 100 is located in 38 slots of the fifth layer, 48 slots of the fourth layer, and the third long-pitch conductor 100 is located in 39 slots of the fifth layer, 49 slots of the fourth layer; the first long-pitch conductor 100 in the sixth third conductor set 30 is located in the fifth layer 46 slot, the fourth layer 02 slot, the second long-pitch conductor 100 is located in the fifth layer 47 slot, the fourth layer 03 slot, and the third long-pitch conductor 100 is located in the fifth layer 48 slot, the fourth layer 04 slot.

In the third coil group III, six third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, three conductors are arranged in the third conductor groups 30, the three conductors are all full-pitch conductors 102, the three third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, a first full-pitch conductor 102 in the first third conductor group 30 is positioned in a 01 groove of a seventh layer and a 10 groove of a sixth layer, a second full-pitch conductor 102 is positioned in a 02 groove of the seventh layer and a 11 groove of the sixth layer, and the third full-pitch conductor 102 is positioned in a 03 groove of the seventh layer and a 12 groove of the sixth layer; the first full pitch conductor 102 in the second third conductor set 30 is located in the seventh layer 10 slots, the sixth layer 19 slots, the second full pitch conductor 102 is located in the seventh layer 11 slots, the sixth layer 20 slots, and the third full pitch conductor 102 is located in the seventh layer 12 slots, the sixth layer 21 slots; the first full pitch conductor 102 in the third conductor set 30 is located in the seventh layer 19 slots and the sixth layer 28 slots, the second full pitch conductor 102 is located in the seventh layer 20 slots and the sixth layer 29 slots, and the third full pitch conductor 102 is located in the seventh layer 21 slots and the sixth layer 30 slots; the first full pitch conductor 102 in the fourth third conductor set 30 is located in the seventh layer 28 slot, the sixth layer 37 slot, the second full pitch conductor 102 is located in the seventh layer 29 slot, the sixth layer 38 slot, and the third full pitch conductor 102 is located in the seventh layer 30 slot, the sixth layer 39 slot; the first full pitch conductor 102 in the fifth third conductor set 30 is located in the seventh layer 37 slot, the sixth layer 46 slot, the second full pitch conductor 102 is located in the seventh layer 38 slot, the sixth layer 47 slot, the third full pitch conductor 102 is located in the seventh layer 39 slot, the sixth layer 48 slot; the first full pitch conductor 102 in the sixth third conductor set 30 is located in the seventh layer 46 slot, the sixth layer 01 slot, the second full pitch conductor 102 is located in the seventh layer 47 slot, the sixth layer 02 slot, and the third full pitch conductor 102 is located in the seventh layer 48 slot, the sixth layer 03 slot.

Examples ten

In this embodiment, compared with the sixth embodiment, the positions of the slots occupied by the conductors in the second conductor set of the second coil set and the third conductor set of the second coil set are different, the pitches between the two corresponding welding ends of the third layer and the fourth layer are different, and the rest are the same.

In the present embodiment, as shown in fig. 24 to 25, in the second coil group, three second conductor groups 20 are sequentially arranged along the circumferential direction of the stator core, the second conductor groups 20 having three conductors therein, the first conductor being a full-pitch conductor 102, the second conductor being a long-pitch conductor 100, and the third conductor being a short-pitch conductor 101; the three second conductor groups 20 are arranged in this order in the circumferential direction of the stator core, the full-pitch conductor 102 in the first second conductor group 20 being located in the 01 slot, 10 slot, the long-pitch conductor 100 being located in the 02 slot, 12 slot, the short-pitch conductor 101 being located in the 03 slot, 11 slot, the full-pitch conductor 102 in the second conductor group 20 being located in the 19 slot, 28 slot, the long-pitch conductor 100 being located in the 20 slot, 30 slot, the short-pitch conductor 101 being located in the 21 slot, 29 slot, the full-pitch conductor 102 in the third second conductor group 20 being located in the 37 slot, 46 slot, the long-pitch conductor 100 being located in the 38 slot, 48 slot, and the short-pitch conductor 101 being located in the 39 slot, 47 slot.

Example eleven

In this embodiment, compared with the first embodiment, the pitches of the conductors in the third conductor set in the third coil set are different, and the other structures are the same.

In the present embodiment, as shown in fig. 26 to 27, in the third coil group, six third conductor groups 30 are sequentially provided along the circumferential direction of the stator core, the third conductor groups 30 having three conductors therein, the first conductor being a long-pitch conductor 100, the second conductor being a short-pitch conductor 101, and the third conductor being a full-pitch conductor 102; six third conductor groups 30 are arranged in this order along the circumferential direction of the stator core, the first long-pitch conductor 100 in the first third conductor group 30 being located in the 01 slot of the third layer, the 11 slot of the second layer, the second short-pitch conductor 101 being located in the 02 slot of the third layer, the 10 slot of the second layer, the third full-pitch conductor 102 being located in the 03 slot of the third layer, the 12 slot of the second layer; the first long pitch conductor 100 in the second third conductor set 30 is located in 10 slots of the third layer, 20 slots of the second layer, the second short pitch conductor 101 is located in 11 slots of the third layer, 19 slots of the second layer, and the third full pitch conductor 102 is located in 12 slots of the third layer, 21 slots of the second layer; the first long pitch conductor 100 in the third conductor set 30 is located in 19 slots of the third layer, 29 slots of the second layer, the second short pitch conductor 101 is located in 20 slots of the third layer, 28 slots of the second layer, and the third full pitch conductor 102 is located in 21 slots of the third layer, 30 slots of the second layer; the first long pitch conductor 100 in the fourth third conductor set 30 is located in the 28 slots of the third layer, the 38 slots of the second layer, the second short pitch conductor 101 is located in the 29 slots of the third layer, the 37 slots of the second layer, and the third full pitch conductor 102 is located in the 30 slots of the third layer, the 39 slots of the second layer; the first long pitch conductor 100 in the fifth third conductor set 30 is located in 37 slots of the third layer, 47 slots of the second layer, the second short pitch conductor 101 is located in 38 slots of the third layer, 46 slots of the second layer, and the third full pitch conductor 102 is located in 39 slots of the third layer, 48 slots of the second layer; the first long pitch conductor 100 in the sixth third conductor set 30 is located in the third layer 46 slot, the second layer 02 slot, the second short pitch conductor 101 is located in the third layer 47 slot, the second layer 01 slot, and the third full pitch conductor 102 is located in the third layer 48 slot, the second layer 03 slot.

Example twelve

In this embodiment, compared with the eleventh embodiment, the pitches of the conductors in the first conductor set in the first coil set are different, the third conductor set in the third coil set has two types, and the other structures are the same.

In this embodiment, as shown in fig. 32 to 33, in the first coil set, three first conductor sets 10 are sequentially arranged along the circumferential direction of the stator core, and three conductors are provided in the first conductor set 10, and the three conductors are all full-pitch conductors 102; the three first conductor sets 10 are sequentially arranged along the circumferential direction of the stator core, wherein a first full-pitch conductor 102 in the first conductor set 10 is positioned in a 01 slot and a 10 slot of the first layer, a second full-pitch conductor 102 is positioned in a 02 slot and a 11 slot of the first layer, a third full-pitch conductor 102 is positioned in a 03 slot and a 12 slot of the first layer, a first full-pitch conductor 102 in the second first conductor set 10 is positioned in a 19 slot and a 28 slot of the first layer, a second full-pitch conductor 102 is positioned in a 20 slot and a 29 slot of the first layer, a third full-pitch conductor 102 is positioned in a 21 slot and a 30 slot of the first layer, a first full-pitch conductor 102 in the third first conductor set 10 is positioned in a 37 slot and a 46 slot of the first layer, a second full-pitch conductor 102 is positioned in a 38 slot and a 47 slot of the first layer, and a third full-pitch conductor 102 is positioned in a 39 slot and a 48 slot of the first layer.

In the third coil group, six third conductor groups 30 are sequentially arranged along the circumferential direction of the stator core, including three first-type third conductor groups 30 having three conductors therein, the first conductor being a long-pitch conductor 100, the second conductor being a short-pitch conductor 101, the third conductor being a full-pitch conductor 102, and three second-type third conductor groups 30 having three conductors therein, the three conductors being full-pitch conductors 102.

Along the circumferential direction of the stator core, the first-type third conductor sets 30 and the second-type third conductor sets 30 are alternately arranged, that is, the first-type third conductor sets 30, the second-type third conductor sets 30, the first-type third conductor sets 30, … … are sequentially arranged.

The long-pitch conductors 100 in the first type third conductor set 30 are located in 01 slots of the third layer, 11 slots of the second layer, the short-pitch conductors 101 are located in 02 slots of the third layer, 10 slots of the second layer, and the full-pitch conductors 102 are located in 03 slots of the third layer, 12 slots of the second layer; the first full pitch conductor 102 in the first second class of third conductor set 30 is located in 10 slots of the third layer, 19 slots of the second layer, the second full pitch conductor 102 is located in 11 slots of the third layer, 20 slots of the second layer, and the third full pitch conductor 102 is located in 12 slots of the third layer, 21 slots of the second layer; the long pitch conductors 100 in the second first type third conductor set 30 are located in 19 slots of the third layer, 29 slots of the second layer, the short pitch conductors 101 are located in 20 slots of the third layer, 28 slots of the second layer, and the full pitch conductors 102 are located in 21 slots of the third layer, 30 slots of the second layer; the first full pitch conductor 102 in the second class of third conductor set 30 is located in the 28 slots of the third layer, the 37 slots of the second layer, the second full pitch conductor 102 is located in the 29 slots of the third layer, the 38 slots of the second layer, and the third full pitch conductor 102 is located in the 30 slots of the third layer, the 39 slots of the second layer; the long-pitch conductors 100 in the third conductor set 30 of the third first type are located in 37 slots of the third layer, 47 slots of the second layer, the short-pitch conductors 101 are located in 38 slots of the third layer, 46 slots of the second layer, and the full-pitch conductors 102 are located in 39 slots of the third layer, 48 slots of the second layer; the first full pitch conductor 102 in the third second group of conductors 30 is located in the 46 slots of the third layer, the 01 slots of the second layer, the second full pitch conductor 102 is located in the 47 slots of the third layer, the 02 slots of the second layer, and the third full pitch conductor 102 is located in the 48 slots of the third layer, the 03 slots of the second layer.

The foregoing describes the embodiments of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.

Claims

1. A stator winding, characterized by: the number of slots per phase per pole is 3, any phase winding comprises,

at least one coil group III arranged on two adjacent radial layers of the stator core, wherein the coil group III is arranged between the coil group I and the coil group II, and comprises a plurality of third conductor groups which are sequentially arranged along the circumferential direction of the stator core;

The first conductor set, the second conductor set and the third conductor set all comprise three conductors arranged in adjacent grooves, and pitches of the three conductors in the first conductor set, the second conductor set and the third conductor set are different or identical.

2. The stator winding of claim 1, wherein: the conductors of each branch winding are sequentially connected along the magnetic poles of the stator winding, and are sequentially connected once along the radial direction of the same magnetic pole of the stator winding.

3. The stator winding of claim 2, wherein: each branch winding is arranged in an S shape and spans a circle along the circumferential direction of the stator core.

4. A stator winding according to any one of claims 1-3, characterized in that: conductors of corresponding pitch types in the first conductor set and the second conductor set are located in different slots of the stator core;

5. The stator winding of claim 1, wherein: the plurality of conductors of the first conductor group sequentially arranged along the circumferential direction of the stator core are at least a full-pitch conductor, a long-pitch conductor, and a short-pitch conductor in sequence, or the plurality of conductors of the first conductor group sequentially arranged along the circumferential direction of the stator core are at least a full-pitch conductor in sequence.

6. The stator winding of claim 5, wherein: the plurality of conductors of the second conductor group sequentially arranged along the circumferential direction of the stator core are sequentially at least the long-pitch conductor, the short-pitch conductor, and the full-pitch conductor, or the plurality of conductors of the second conductor group sequentially arranged along the circumferential direction of the stator core are sequentially full-pitch.

7. A stator winding according to claim 5 or 6, characterized in that: the plurality of conductors in the third conductor group, which are arranged along the circumferential direction of the stator core, are the long-pitch conductors and/or the short-pitch conductors and/or the full-pitch conductors.

8. The stator winding of claim 7, wherein: the full pitch is 9, the long pitch is 10, and the short pitch is 8.

9. The stator winding of claim 1, wherein: the two welding ends of the conductors in the third conductor set extend along the circumferential direction of the stator core, and the extending directions are opposite and mutually close.

10. A stator winding according to claim 1 or 2 or 3 or 5 or 6, characterized in that: on the welding end side of any one phase winding, the pitch between two welding ends of the phase welding of two radially adjacent layers of the stator core is a full pitch and/or a long pitch and/or a short pitch.

11. The stator winding of claim 1, wherein: the radial layer number of the stator core is an even layer greater than or equal to 4.

12. The stator winding of claim 1, wherein: in each branch winding, the lead end is connected with one welding end of one conductor of the outermost layer or the outermost layer-1 layer in the same radial direction of the stator core, and the wire outlet end is connected with one welding end of one conductor of the outermost layer-1 layer or the outermost layer.

13. A stator, characterized in that: a stator winding comprising a stator as claimed in any one of claims 1-12.

14. An electric motor, characterized in that: comprising a stator according to claim 13.