CN114006492A

CN114006492A - Motor stator winding, stator and motor

Info

Publication number: CN114006492A
Application number: CN202111384963.2A
Authority: CN
Inventors: 柏荣键; 张成家; 任玉亮; 董适林; 王彦哲
Original assignee: Tianjin Songzheng Auto Parts Co ltd
Current assignee: Tianjin Songzheng Auto Parts Co ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-02-01
Anticipated expiration: 2041-11-22
Also published as: CN114006492B

Abstract

The invention provides a motor stator winding, a stator and a motor, wherein any phase winding comprises at least two coil groups I, the coil groups I are sequentially arranged along the radial direction of a stator core and along the direction from the innermost layer to the outermost layer or from the outermost layer to the innermost layer of the stator core, the coil group I is arranged on the Nth layer and the (N + M/2) th layer of the stator core, M is the radial layer number of the stator core, or the coil group I is arranged on the innermost layer and the outermost layer of the stator core, and the coil group I is arranged on the radial (innermost layer + N) th layer and the (outermost layer-N) layer or the (innermost layer-N) th layer and the (outermost layer + N) th layer of the stator core; the winding of any phase also comprises an outgoing line end, the outgoing line end is arranged at the plug wire end or the welding end of the winding of any phase, and the outgoing line end is constructed by opening any position of the plug wire end or the welding end. The invention has the advantages of single conductor type, simple stator winding structure and capability of opening and constructing an outgoing line end at a conductor at any position.

Description

Motor stator winding, stator and motor

Technical Field

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

Background

In the prior art, the types of conductors in the stator windings are more, a confluence current is needed to connect branch windings in each phase winding, or a plurality of conductors are inserted into different layers, in some stator windings, the insides of all slots of partial conductors are positioned in a first layer and a second layer in the radial direction of a stator core, the insides of all slots of partial conductors are also required to be positioned in the second layer and the third layer, or the insides of all slots of partial conductors are positioned in the first layer.

Disclosure of Invention

In view of the above problems, the present invention provides a stator winding for an electric machine, a stator and an electric machine, so as to solve the above or other former problems in the prior art.

In order to solve the technical problems, the invention adopts the technical scheme that: a motor stator winding, any phase winding comprises at least two coil groups I, a plurality of coil groups I are arranged in sequence along the radial direction of a stator core, wherein,

along the direction from the innermost layer to the outermost layer or the direction from the outermost layer to the innermost layer of the stator core, the first coil group is arranged on the Nth layer and the (N + M/2) th layer of the stator core, wherein M is the radial layer number of the stator core, or the first coil group is arranged on the innermost layer and the outermost layer of the stator core, and the first coil group is arranged on the radial (innermost layer + N) th layer and the (outermost layer-N) th layer or the (innermost layer-N) th layer and the (outermost layer + N) th layer of the stator core;

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

the winding of any phase also comprises an outgoing line end, the outgoing line end is arranged at the plug wire end or the welding end of the winding of any phase, and the outgoing line end is constructed by opening any position of the plug wire end or the welding end.

Further, when the number of the second conductor sets is one, a plurality of the first conductor sets are arranged on two sides of the second conductor sets;

when the number of the second conductor groups is plural, the plural first conductor groups and the plural second conductor groups are alternately arranged along the circumferential direction of the stator core.

Further, an outgoing line end is constructed by opening from the plug end of at least one conductor in the first conductor group or the second conductor group;

or, the two welding end parts welded from any phase of the welding ends of any phase winding are opened to form an outlet wire end.

Furthermore, the position of the leading-out wire end of each branch is positioned in the same magnetic pole of the stator winding.

Furthermore, at least two branches of any phase winding are connected in parallel;

when any phase winding has two parallel branches, the two parallel branches in any phase winding are positioned at different magnetic poles;

when any phase winding has four parallel branches, any two parallel branches and the other two parallel branches in any phase winding are positioned at different magnetic poles.

Furthermore, when any phase winding is provided with two parallel branches and the leading-out end of each branch is positioned at the wire plugging end of any phase winding, the two parallel branches are positioned at the same magnetic pole;

when any phase winding has four parallel branches and the leading-out wire end of each branch is positioned at the wire plugging end of any phase winding, the four parallel branches are positioned at the same magnetic pole.

Furthermore, the conductors in the first coil group are all the same type of conductors, welding ends of the conductors extend along the circumferential direction of the stator core, and the extending directions of the welding ends extend in opposite directions.

Furthermore, the number of radial layers of the stator core is an even number of layers which is more than or equal to four.

Further, in the stator winding, the pitch between the two welded ends that are welded is a full pitch, and the full pitch is 6.

Further, the pitch of the conductors in the first conductor set is different from the pitch of the conductors in the second conductor set.

Further, the first conductor group comprises two first full-pitch conductors which are adjacently arranged, and the pitch of the first full-pitch conductors is 6;

or, the first conductor group comprises two first short-pitch conductors which are adjacently arranged, and the pitch of the first short-pitch conductors is 5;

or, the first conductor set includes two adjacently disposed first long-pitch conductors having a pitch of 7.

Further, the first conductor group comprises a first long-pitch conductor and a first short-pitch conductor, the first long-pitch conductor is arranged around the outer part of the first short-pitch conductor, the pitch of the first long-pitch conductor is 7, and the pitch of the first short-pitch conductor is 5;

or the first conductor group comprises a first full-pitch conductor and a second short-pitch conductor, the first full-pitch conductor is arranged around the outside of the second short-pitch conductor, the pitch of the first full-pitch conductor is 6, and the pitch of the second short-pitch conductor is 4;

or, the first conductor group comprises a second long-pitch conductor and a first full-pitch conductor, the second long-pitch conductor is arranged around the outer part of the first full-pitch conductor, the pitch of the second long-pitch conductor is 8, and the pitch of the first full-pitch conductor is 6.

Further, the second conductor group comprises a first short-pitch conductor and a first long-pitch conductor, the first long-pitch conductor is arranged around the outer part of the first short-pitch conductor, the pitch of the first long-pitch conductor is 7, and the pitch of the first short-pitch conductor is 5;

or the second conductor group comprises a second long-pitch conductor and a first full-pitch conductor, the second long-pitch conductor is arranged around the outer part of the first full-pitch conductor, the pitch of the second long-pitch conductor is 8, and the pitch of the first full-pitch conductor is 6;

or, the second conductor group comprises a first full-pitch conductor and a second short-pitch conductor, the first full-pitch conductor is arranged around the outer part of the second short-pitch conductor, the pitch of the first full-pitch conductor is 6, and the pitch of the second short-pitch conductor is 4.

Further, the second conductor group includes two adjacently disposed first short-pitch conductors, the pitch of the first short-pitch conductors is 5;

or, the second conductor group comprises two adjacently arranged first long-pitch conductors, and the pitch of the first long-pitch conductors is 7;

or, the second conductor set comprises two adjacently arranged first full-pitch conductors, and the pitch of the first full-pitch conductors is 6.

The utility model provides a motor stator, includes stator core and as above-mentioned motor stator winding, motor stator winding locates on the stator core.

An electric machine comprises a machine stator as described above.

By adopting the technical scheme, the conductors in any phase winding of the stator winding are the same type of conductors, and any phase winding at least comprises two coil groups I which are sequentially arranged along the radial direction of the stator core, and the coil groups I are composed of the first conductor groups and the second conductor groups of two types, the conductor type is single, the arrangement of a bus bar is cancelled, the manufacturing process is simple, the stator winding is simple in structure, the number of layers of the plurality of coil groups is the same when the plurality of coil groups are arranged on the stator core, the motor stator winding is simple in structure, the leading-out wire end can be formed by opening the conductors at any position, and the leading-out wire end can be located at the plug wire end or the welding end of the stator winding, the manufacturing process is simplified, the production cost is reduced, and the processing efficiency is improved.

Drawings

FIG. 1 is a schematic structural view of a stator of some embodiments of the present invention;

fig. 2 is a schematic structural view of a lead-out terminal of any phase winding of the stator winding according to some embodiments of the present invention provided at a plug terminal;

fig. 3 is a schematic structural view of a lead-out terminal of any one phase winding of the stator winding according to some embodiments of the present invention provided at a welding terminal;

FIG. 4 is a schematic structural view of a conductor of some embodiments of the present invention;

fig. 5 is a schematic diagram of an expanded structure of a wire plugging end of any phase winding according to the first embodiment of the invention;

fig. 6 is a schematic view showing a spread structure of a welded end of any one phase winding according to the first embodiment of the present invention;

fig. 7 is a schematic diagram of an expanded structure of a wire insertion end of any phase winding according to the second embodiment of the present invention;

fig. 8 is a schematic view of a spread structure in which the lead-out terminal of any phase winding is provided at the welding terminal according to the third embodiment of the present invention;

fig. 9 is a schematic diagram of an expanded structure of a wire insertion end of any phase winding according to the fourth embodiment of the present invention;

fig. 10 is a schematic diagram of an expanded structure of a wire plugging end of any phase winding of the fifth embodiment of the invention;

fig. 11 is a schematic view of an expanded structure in which the lead-out terminal of any phase winding is provided at the welding terminal according to the sixth embodiment of the present invention;

fig. 12 is a schematic diagram showing an expanded structure of the wire insertion end of any one phase winding according to a seventh embodiment of the present invention;

fig. 13 is a schematic view of an expanded structure of the plug end of any phase winding according to the eighth embodiment of the present invention;

fig. 14 is a schematic view of a spread structure in which the terminal of the outgoing line of any phase winding is provided at the welding terminal according to the ninth embodiment of the present invention;

fig. 15 is a schematic diagram of an expanded structure of the plug end of any phase winding of the tenth embodiment of the invention;

fig. 16 is a schematic diagram showing a developed structure of a plug end of any one phase winding of the eleventh embodiment of the present invention;

fig. 17 is a schematic diagram showing a developed structure of a plug end of any one phase winding according to a thirteenth embodiment of the invention;

fig. 18 is a schematic diagram showing a developed structure of a plug end of any one phase winding according to the fourteenth embodiment of the invention;

fig. 19 is a schematic diagram of an expanded structure of the plug end of any phase winding of the sixteen embodiments of the present invention;

fig. 20 is a schematic diagram showing an expanded structure of a wire insertion end of any one phase winding according to a seventeenth embodiment of the present invention;

fig. 21 is a schematic structural view of any one of phase windings of nineteen embodiments of the invention;

fig. 22 is a schematic diagram showing a developed structure of a plug terminal of any one of phase windings according to nineteen embodiments of the invention;

fig. 23 is a schematic view of a developed structure of a welded end of any one phase winding of nineteen embodiments of the invention;

fig. 24 is a schematic diagram showing a developed structure of a plug end of any one phase winding of the twenty embodiment of the invention;

fig. 25 is a schematic view of a spread structure of the welded ends of any phase winding of twenty-one embodiment of the invention;

fig. 26 is a schematic diagram showing a developed structure of a plug terminal of any one of the twenty-two phase windings according to the embodiment of the present invention;

fig. 27 is a schematic diagram showing a developed structure of a plug terminal of any one of the phase windings of twenty-three embodiments of the present invention;

fig. 28 is a schematic diagram showing an expanded structure of a plug end of any one phase winding according to twenty-five of the embodiment of the present invention;

fig. 29 is a schematic diagram showing an expanded structure of a plug terminal of any one phase winding of twenty-six according to the embodiment of the present invention;

fig. 30 is a schematic diagram of the structure of any phase winding of an embodiment twenty-eight of the invention;

fig. 31 is a schematic structural view of a patch end of a first conductor set according to twenty-eight embodiments of the present invention;

fig. 32 is a schematic structural view of a patch end of a second conductor set according to twenty-eight embodiments of the invention;

fig. 33 is a schematic diagram of an expanded structure of the plug end of any one of the twenty-eight phase windings according to the embodiment of the invention.

In the figure:

10. stator winding 20, stator core 30, and lead-out wire end

40. Plug end 50, solder end 301, and interior of slot

302. Plug terminal 303, solder terminal 100, first full-pitch conductor

200. First short-pitch conductor 300, first long-pitch conductor 400, and second short-pitch conductor

500. Second long-pitch conductor

Detailed Description

The invention is further described with reference to the following figures and specific embodiments.

Fig. 1 to 33 are schematic structural diagrams illustrating some embodiments of the present invention, and some embodiments of the present invention relate to a motor stator winding, a motor stator, and a motor, where the motor stator winding structurally employs conductor groups constructed by the same type of conductors to set coil groups, the types of the conductors are single, the number of layers of the plurality of coil groups when the coil groups are set on a stator core is the same, the motor stator winding has a simple structure, an outgoing line end can be formed by opening a conductor at any position, and the outgoing line end can be located at a pin end or a solder end of the stator winding, a bus bar is omitted, the manufacturing process is simple, the manufacturing process is simplified, the manufacturing cost is reduced, and the processing efficiency is improved.

A stator winding 10 of an electric machine, as shown in fig. 1-33, includes multiple phase windings, where any phase winding includes at least two coil groups one, the coil group one is an annular structure formed by rotating and overlapping a plurality of hairpin coils, the plurality of coil groups one are sequentially arranged along a radial direction of a stator core 20, the plurality of coil groups one are sequentially arranged along the radial direction of the stator core 20 from an innermost layer to an outermost layer, or the plurality of coil groups one are sequentially arranged along the radial direction of the stator core 20 from the outermost layer to the innermost layer, and are selected according to actual requirements, where no specific requirement is made;

wherein, along the radial direction of stator core 20, from the innermost layer to the outermost layer direction or from the outermost layer to the innermost layer direction, when setting up the first nth coil group, the first nth coil group is located at the nth layer and the (N + M/2) th of stator core 20, for example: when the number of radial layers of the stator core 20 is four, two coil groups one are provided, the two coil groups one are sequentially arranged along the direction from the innermost layer to the outermost layer of the stator core 20, the first coil group one is arranged on the first layer and the third layer of the stator core 20, the second coil group one is arranged on the second layer and the fourth layer of the stator core 20, and all the slots of the whole stator core 20 are covered; when the number of radial layers of the stator core 20 is 6, three coil groups one are provided, the three coil groups one are sequentially arranged along the direction from the innermost layer to the outermost layer of the stator core 20, the first coil group one is arranged on the first layer and the fourth layer of the stator core 20, the second coil group one is arranged on the second layer and the fifth layer of the stator core 20, the third coil group one is arranged on the third layer and the sixth layer of the stator core 20 and is fully distributed in each groove of the whole stator core 20, and when the stator core 20 has multiple layers, the setting is performed by repeating the steps;

or, the first coil group one is disposed at the radially innermost and outermost layers of the stator core 20, and the nth coil group one is disposed at the radially (innermost + N) th and (outermost-N) th layers or (innermost-N) th and (outermost + N) th layers of the stator core 20, such as: the plurality of coil groups I are sequentially arranged along the direction from the innermost layer to the outermost layer of the stator core 20, the number of radial layers of the stator core 20 is six, then, the first coil group I is arranged on the first layer and the sixth layer of the stator core 20, the second coil group I is arranged on the second layer and the fifth layer of the stator core 20, the third coil group I is arranged on the third layer and the fourth layer of the stator core 20, and when the stator core 20 has a plurality of layers, the steps are repeated; at the moment, when a plurality of conductors in the first coil group are arranged, the wire inserting ends 40 are arranged in an intersecting manner;

when the first coil group is arranged, the radial position of the stator core 20 is selected according to actual requirements, no specific requirements are made here, and the number of the first coil group is selected and arranged according to the number of radial layers of the stator core 20, no specific requirements are made here.

The first coil group comprises a plurality of first conductor groups and at least one second conductor group, the plurality of first conductor groups and the plurality of second conductor groups are sequentially arranged along the circumferential direction of the stator core 20, the first coil group is formed by rotating and winding the plurality of first conductor groups and the at least one second conductor group, the number of the first conductor groups and the number of the second conductor groups are selected according to actual requirements, and no specific requirement is made here.

When the number of the second conductor groups is one, the plurality of first conductor groups are arranged on two sides of the second conductor groups, the plurality of first conductor groups and one second conductor group are sequentially arranged along the circumferential direction of the stator core 20, after a part of the first conductor groups are arranged, the second conductor groups are arranged, and then the rest of the first conductor groups are continuously arranged along the circumferential direction;

when the number of the second conductor groups is multiple, the multiple first conductor groups and the multiple second conductor groups are alternately arranged along the circumferential direction of the stator core 20, one first conductor group is arranged along the circumferential direction of the stator core 20, one second conductor group is arranged, one first conductor group is arranged, one second conductor group is arranged, the other second conductor group is arranged, and the like, until the arrangement of the multiple first conductor groups and the multiple second conductor groups is completed, the structure of the first coil group is formed.

The winding of any phase further includes an outgoing line end 30, the outgoing line end 30 is disposed at the plug end 40 or the welding end 50 of the winding of any phase, and the outgoing line end 30 is configured by opening any position of the plug end 40 or the welding end 50, that is, the outgoing line end 30 may be located at the plug end 40 of the winding of any phase, and the outgoing line end 30 may also be located at the welding end 50 of the winding of any phase, and is selected according to actual requirements, which does not make specific requirements here.

The number of the outlet terminals 30 is selectively set according to the number of the parallel branches in any phase winding, and is not particularly required here.

When the leading-out wire end 30 is arranged at the plug wire end 40 of any phase winding, the leading-out wire end 30 is constructed by opening at least one conductor in the first conductor group or the second conductor group, that is, the leading-out wire end 30 can be opened from the conductor with the largest pitch in the first conductor group, the plug wire end 302 of the conductor with the largest pitch is opened to form a leading wire end and a leading wire end, or the plug wire end 302 of the conductor with the smallest pitch in the first conductor group can be opened to form a leading wire end and a leading wire end, or the leading-out wire end 302 of the conductor is opened from other conductors in the first conductor group, the plug wire end 302 of the conductor is opened to form a leading wire end and a leading wire end, and the selection of the conductor in the first conductor group and the selection of the number of the conductors are selected according to actual requirements, and no specific requirements are made here; or, the conductor is opened from the conductor with the largest pitch in the second conductor group, the plug wire end 302 of the conductor with the largest pitch is opened to form the lead end and the outlet end, or the conductor is opened from the conductor with the smallest pitch in the second conductor group, the plug wire end 302 of the conductor with the smallest pitch is opened to form the lead end and the outlet end, or the plug wire end 302 of the conductor is opened from other conductors in the second conductor group to form the lead end and the outlet end, and the selection of the conductors in the second conductor group and the selection of the number of the conductors are selected according to actual requirements, and are not particularly required.

Moreover, the leading-out wire terminal 30 may be opened from the plug wire end 302 of one conductor in the first conductor group and from the plug wire end 302 of one conductor in the second conductor group, as long as the current directions of the conductors in the stator winding of the motor are consistent, and the arrangement position of the leading-out wire terminal 30 at the plug wire terminal 40 is selected according to actual requirements, and is not specifically required here.

When the leading-out wire end 30 is arranged at the welding end 50 of any phase of winding, two welding end parts 303 welded at any phase can be opened to form a leading-out wire end and a leading-out wire end, and the arrangement position of the leading-out wire end 30 is selected and arranged according to actual requirements without specific requirements.

The leading end 30 of each branch is located in the same magnetic pole of the stator winding 10, and in any phase winding, the leading end and the leading end of each parallel branch are located in the same magnetic pole of the stator core 20. At least two branches of any phase winding are connected in parallel, two branches can be connected in parallel, four branches can be connected in parallel, or multiple branches can be connected in parallel, selection is carried out according to actual requirements, and no specific requirement is made here; when any phase winding has two parallel branches, the two parallel branches in any phase winding are positioned at different magnetic poles, namely, the two parallel branch windings are positioned in different magnetic poles; when any phase winding has four parallel branches, any two parallel branches and the rest two parallel branches in any phase winding are positioned in different magnetic poles, that is, in the four parallel branches, any two parallel branch windings are positioned in one magnetic pole, and the rest two parallel branches are positioned in the other magnetic pole.

According to the further optimization scheme, when any phase winding is provided with two parallel branches and the leading-out end of each branch is positioned at the wire plugging end of any phase winding, the two parallel branches are positioned at the same magnetic pole; when any phase winding has four parallel branches and the leading-out wire end of each branch is positioned at the wire plugging end of any phase winding, the four parallel branches are positioned at the same magnetic pole.

The conductors in the first coil group are all the same type of conductor, the welding ends 303 of the conductors extend along the circumferential direction of the stator core 20, and the extending directions of the welding ends 303 extend in opposite directions. The plurality of conductors in the first coil group are hairpin coils with the same structure, the hairpin coils are U-shaped conductors, each U-shaped conductor is provided with two welding end parts 303 and is used for being in welding connection with the welding end parts 303 of the hairpin coils of the adjacent layers, each hairpin coil is provided with two groove interiors 301 and a wire plugging end part 302, one ends of the two groove interiors 301 are respectively connected with the two welding end parts 303, the other ends of the two groove interiors 301 are respectively connected with the wire plugging end parts 302 to form a U-shaped conductor structure, the U-shaped conductors with the same structure and different pitches are selected according to the preparation requirement of the stator winding 10 to form the structures of a first conductor group and a second conductor group, the plurality of first conductor groups and at least one second conductor group are formed into the structure of the first coil group according to a certain arrangement rule, the plurality of first coil groups are formed into the structure of the stator winding 10, so that the structure of the stator winding 10 is simple and the preparation process is simple, the working efficiency is high. Both welding ends 303 of the conductor extend along the circumferential direction of the stator core 20, and the extending directions extend in opposite directions, and are opposite and away from each other.

The number of radial layers of the stator core 20 is an even number of layers greater than or equal to four, and the number of radial layers of the stator core 20 is selected according to actual requirements, which is not specifically required here.

In the stator winding 10, the pitch between the two welding ends 303 that are welded to each other is a full pitch, that is, the total length of the two welding ends 303 that are welded to each other in the circumferential direction of the stator core 20 is a full pitch, which is 6, and the extension length of each welding end 303 of the two welding ends 303 that are welded to each other in the circumferential direction of the stator core 20 is selected according to actual needs.

The first conductor set includes two first full-pitch conductors 100 which are adjacently arranged, the pitch of the first full-pitch conductors 100 is 6, when the two first full-pitch conductors 100 are arranged, two slot interiors 301 on the same side are located in two adjacent slots of the stator core 20, and two slot interiors 301 on the other side are located in two adjacent slots of the stator core 20.

Alternatively, the first conductor group includes two adjacently disposed first short-pitch conductors 200, the pitch of the first short-pitch conductors 200 is 5, and when the two first short-pitch conductors 200 are disposed, the two slot inner portions 301 on the same side are located in the two adjacent slots of the stator core 20, and the two slot inner portions 301 on the other side are located in the two adjacent slots of the stator core 20.

Alternatively, the first conductor group includes two adjacently disposed first long-pitch conductors 300, the pitch of the first long-pitch conductors 300 is 7, and when the two first long-pitch conductors 300 are disposed, the two slot interiors 301 on the same side are located in the two adjacent slots of the stator core 20, and the two slot interiors 301 on the other side are located in the two adjacent slots of the stator core 20.

Alternatively, the first conductor group includes a first long-pitch conductor 300 and a first short-pitch conductor 200, the first long-pitch conductor 300 is provided around the outside of the first short-pitch conductor 200, the pitch of the first long-pitch conductor 300 is 7, the pitch of the first short-pitch conductor 200 is 5, and the first long-pitch conductor 300 is provided concentrically with the first short-pitch conductor 200.

Alternatively, the first conductor group includes a first full-pitch conductor 100 and a second short-pitch conductor 400, the first full-pitch conductor 100 is arranged around the outside of the second short-pitch conductor 400, the pitch of the first full-pitch conductor 100 is 6, the pitch of the second short-pitch conductor 400 is 4, and the first full-pitch conductor 100 and the second short-pitch conductor 400 are arranged concentrically.

Alternatively, the first conductor group includes a second long-pitch conductor 500 and a first full-pitch conductor 100, the second long-pitch conductor 500 is provided around the outside of the first full-pitch conductor 100, the second long-pitch conductor 500 has a pitch of 8, the first full-pitch conductor 100 has a pitch of 6, and the second long-pitch conductor 500 is provided concentrically with the first full-pitch conductor 100.

The second conductor group includes a first short-pitch conductor 200 and a first long-pitch conductor 300, the first long-pitch conductor 300 is provided around the outside of the first short-pitch conductor 200, the pitch of the first long-pitch conductor 300 is 7, the pitch of the first short-pitch conductor 200 is 5, and the first long-pitch conductor 300 is provided concentrically with the first short-pitch conductor 200.

Alternatively, the second conductor set includes a second long-pitch conductor 500 and a first full-pitch conductor 100, the second long-pitch conductor 500 is provided around the outside of the first full-pitch conductor 100, the second long-pitch conductor 500 has a pitch of 8, the first full-pitch conductor 100 has a pitch of 6, and the second long-pitch conductor 500 is provided concentrically with the first full-pitch conductor 100.

Alternatively, the second conductor set includes two first full-pitch conductors 100 which are adjacently arranged, the pitch of the first full-pitch conductors 100 is 6, when the two first full-pitch conductors 100 are arranged, the two slot interiors 301 on the same side are located in two adjacent slots of the stator core 20, and the two slot interiors 301 on the other side are located in two adjacent slots of the stator core 20.

Alternatively, the second conductor set includes two adjacently disposed first short-pitch conductors 200, the pitch of the first short-pitch conductors 200 is 5, and when the two first short-pitch conductors 200 are disposed, the two slot inner portions 301 on the same side are located in the two adjacent slots of the stator core 20, and the two slot inner portions 301 on the other side are located in the two adjacent slots of the stator core 20.

Alternatively, the second conductor set includes two adjacently disposed first long-pitch conductors 300, the pitch of the first long-pitch conductors 300 is 7, and when the two first long-pitch conductors 300 are disposed, the two slot interiors 301 on the same side are located in the two adjacent slots of the stator core 20, and the two slot interiors 301 on the other side are located in the two adjacent slots of the stator core 20.

Alternatively, the second conductor group includes a first full-pitch conductor 100 and a second short-pitch conductor 400, the first full-pitch conductor 100 is arranged around the outside of the second short-pitch conductor 400, the pitch of the first full-pitch conductor 100 is 6, the pitch of the second short-pitch conductor 400 is 4, and the first full-pitch conductor 100 and the second short-pitch conductor 400 are arranged concentrically.

In the first coil group, the pitch of the conductors in the first conductor group is different from the pitch of the conductors in the second conductor group, and the selection of the types of the conductors in the first conductor group and the second conductor group is selected according to actual requirements, and no specific requirement is made here.

A motor stator comprises a stator core 20 and a motor stator winding 10 as above, wherein the motor stator winding 10 is arranged on the stator core 20.

An electric machine comprises a machine stator as described above.

The following is a detailed description of some specific embodiments.

In some embodiments described below, the stator winding 10 is a three-phase stator winding, the number of slots provided in the stator core 20 is equal to 48, the 48 slots are spaced apart at a predetermined slot pitch in the circumferential direction of the stator core 20, both side walls of the slots are teeth, that is, two adjacent slots define one tooth, the stator winding 10 is mounted on the stator core 20, and the number of radial layers of the stator core 20 is four.

Example one

As shown in fig. 1 to 6, any phase winding of the stator core 20 includes two coil groups one, the two coil groups one are sequentially arranged along the radial direction of the stator core 20, the first coil group one is arranged on the radial first layer and the radial third layer of the stator core 20, and the second coil group one is arranged on the radial second layer and the radial fourth layer of the stator core 20;

the coil group comprises 7 first conductor groups and 1 second conductor group, wherein the first conductor group comprises two first full-pitch conductors 100, the two first full-pitch conductors 100 are adjacently arranged, two groove interiors 301 on one side of the two first full-pitch conductors 100 are positioned in two adjacent grooves on the first layer, two groove interiors 301 on the other side are positioned in two grooves on the third layer, and the pitch of the first full-pitch conductors 100 is 6; the second conductor group includes a first long-pitch conductor 300 and a first short-pitch conductor 200, the first long-pitch conductor 300 is arranged outside the first short-pitch conductor 200, the first long-pitch conductor 300 is arranged concentrically with the first short-pitch conductor 200, two slot interiors 301 of one side of the first long-pitch conductor 300 and the first short-pitch conductor 200 are arranged in two adjacent slots of the first layer, two slot interiors 301 of the other side are arranged in two adjacent slots of the third layer, the pitch of the first long-pitch conductor 300 is 7, and the pitch of the first short-pitch conductor 200 is 5;

any phase winding of the stator winding 10 has two parallel branches, a leading end U1 to a leading end U3 are first parallel branch windings of the phase winding, a leading end U2 to a leading end U4 are second parallel branch windings of the phase winding, and leading ends 30 of the two parallel branch windings are both located at a plug end 40 of the phase winding; the lead terminal 30 of the first parallel branch winding is provided at the second conductor group of the first coil group, the plug terminal 302 of the first long-pitch conductor 300 in the second conductor group is opened to form the lead terminal U1 and the outlet terminal U3 of the first parallel branch winding, the lead terminal 30 of the second parallel branch winding is provided at the second conductor group of the first coil group, the plug terminal 302 of the first long-pitch conductor 300 in the second conductor group is opened to form the lead terminal U2 and the outlet terminal U4 of the second parallel branch winding;

the pitch of the weld ends 50 of the conductors of each parallel leg winding of the phase winding is a full pitch, which is 6.

The structure of each phase winding in the stator winding 10 is the same, and the structure of the stator winding 10 is constructed.

Example two

Compared with the first embodiment, the first coil group has the same structure, except that, as shown in fig. 7, the lead-out wire end 30 of each parallel branch winding is arranged at any one of the first conductor groups of the first coil group, and the lead-out wire of each parallel branch winding is formed by opening the plug wire end 302 of one first full-pitch conductor 100 in the first conductor group; the leading-out wire ends 30 of the two parallel branch windings are located at two first conductor sets in the same radial direction of the stator core 20 in a corresponding position.

EXAMPLE III

In this embodiment, compared with the first embodiment and the second embodiment, the first coil group has the same structure, as shown in fig. 8, except that the lead-out terminal 30 of each parallel branch winding in each phase winding is located at the welding terminal 50 of the phase winding, and the lead-out terminal 30 of the first parallel branch winding is located in one magnetic pole and the lead-out terminal 30 of the second parallel branch winding is located in the other magnetic pole.

Example four

As shown in fig. 9, any phase winding of the stator core 20 includes two coil groups one, the two coil groups one are sequentially arranged along the radial direction of the stator core 20, the first coil group one is arranged on the radial first layer and the radial third layer of the stator core 20, and the second coil group one is arranged on the radial second layer and the radial fourth layer of the stator core 20;

the coil group comprises 7 first conductor groups and 1 second conductor group, wherein the first conductor group comprises two first short-pitch conductors 200, the two first short-pitch conductors 200 are adjacently arranged, two slot inner parts 301 on one side of the two first short-pitch conductors 200 are positioned in two adjacent slots on the first layer, two slot inner parts 301 on the other side are positioned in two slots on the third layer, and the pitch of the first short-pitch conductors 200 is 5; the second conductor group comprises a first full-pitch conductor 100 and a second short-pitch conductor 400, the first full-pitch conductor 100 is arranged outside the second short-pitch conductor 400, the first full-pitch conductor 100 and the second short-pitch conductor 400 are arranged concentrically, two slot inner parts 301 on one side of the first full-pitch conductor 100 and the second short-pitch conductor 400 are arranged in two adjacent slots on the first layer, two slot inner parts 301 on the other side of the first full-pitch conductor 100 and the second short-pitch conductor 400 are arranged in two adjacent slots on the third layer, the pitch of the first full-pitch conductor 100 is 6, and the pitch of the second short-pitch conductor 400 is 4;

any phase winding of the stator winding 10 has two parallel branches, a leading end U1 to a leading end U3 are first parallel branch windings of the phase winding, a leading end U2 to a leading end U4 are second parallel branch windings of the phase winding, and leading ends 30 of the two parallel branch windings are both located at a plug end 40 of the phase winding; the leading end 30 of the first parallel branch winding is arranged at the second conductor group of the first coil group, the plug end 302 of the first full-pitch conductor 100 in the second conductor group is opened to form a leading end U1 and a leading end U3 of the first parallel branch winding, the leading end 30 of the second parallel branch winding is arranged at the second conductor group of the first coil group, and the plug end 302 of the first full-pitch conductor 100 in the second conductor group is opened to form a leading end U2 and a leading end U4 of the second parallel branch winding;

Each phase winding of the stator winding 10 has the same structure.

EXAMPLE five

Compared with the fourth embodiment, the first coil group has the same structure, except that, as shown in fig. 10, the lead-out wire end 30 of each parallel branch winding is provided at any one of the first conductor groups of the first coil group, and the lead-out wire of each parallel branch winding is formed by opening the plug wire end 302 of one first short-pitch conductor 200 in the first conductor group; the leading-out wire ends 30 of the two parallel branch windings are located at two first conductor sets in the same radial direction of the stator core 20 in a corresponding position.

EXAMPLE six

In this embodiment, compared with the fourth and fifth embodiments, the first coil group has the same structure, except that, as shown in fig. 11, the leading-out wire end 30 of each parallel branch winding in each phase winding is located at the welding end 50 of the phase winding, and the leading-out wire end 30 of the first parallel branch winding is located in one magnetic pole, and the leading-out wire end 30 of the second parallel branch winding is located in the other magnetic pole.

EXAMPLE seven

As shown in fig. 12, any phase winding of the stator core 20 includes two coil groups one, the two coil groups one are sequentially arranged along the radial direction of the stator core 20, the first coil group one is arranged on the radial first layer and the radial third layer of the stator core 20, and the second coil group one is arranged on the radial second layer and the radial fourth layer of the stator core 20;

the coil group comprises 7 first conductor groups and 1 second conductor group, wherein the first conductor group comprises two first long-pitch conductors 300, the two first long-pitch conductors 300 are adjacently arranged, two slot inner parts 301 on one side of the two first long-pitch conductors 300 are positioned in two adjacent slots on the first layer, two slot inner parts 301 on the other side are positioned in two slots on the third layer, and the pitch of the first long-pitch conductors 300 is 7; the second conductor group comprises a second long-pitch conductor 500 and a first full-pitch conductor 100, the second long-pitch conductor 500 is arranged outside the first full-pitch conductor 100, the second long-pitch conductor 500 is arranged concentrically with the first full-pitch conductor 100, the second long-pitch conductor 500 and two groove interiors 301 on one side of the first full-pitch conductor 100 are arranged in two adjacent grooves on the first layer, two groove interiors 301 on the other side are arranged in two adjacent grooves on the third layer, the pitch of the second long-pitch conductor 500 is 8, and the pitch of the first full-pitch conductor 100 is 6;

any phase winding of the stator winding 10 has two parallel branches, a leading end U1 to a leading end U3 are first parallel branch windings of the phase winding, a leading end U2 to a leading end U4 are second parallel branch windings of the phase winding, and leading ends 30 of the two parallel branch windings are both located at a plug end 40 of the phase winding; the lead terminal 30 of the first parallel branch winding is provided at the second conductor group of the first coil group, the plug terminal 302 of the second long-pitch conductor 500 in the second conductor group is opened to form the lead terminal U1 and the outlet terminal U3 of the first parallel branch winding, the lead terminal 30 of the second parallel branch winding is provided at the second conductor group of the first coil group, and the plug terminal 302 of the second long-pitch conductor 500 in the second conductor group is opened to form the lead terminal U2 and the outlet terminal U4 of the second parallel branch winding;

Example eight

Compared with the seventh embodiment, the first coil group has the same structure, except that, as shown in fig. 13, the lead-out wire end 30 of each parallel branch winding is provided at any one of the first conductor groups of the first coil group, and the lead-out wire of each parallel branch winding is formed by opening the plug wire end 302 of one first long-pitch conductor 300 in the first conductor group; the leading-out wire ends 30 of the two parallel branch windings are located at two first conductor sets in the same radial direction of the stator core 20 in a corresponding position.

Example nine

Compared with the seventh embodiment and the eighth embodiment, the first coil group has the same structure, except that, as shown in fig. 14, the leading-out wire end 30 of each parallel branch winding in each phase winding is arranged at the welding end 50 of the phase winding, and the leading-out wire end 30 of the first parallel branch winding is positioned in one magnetic pole, and the leading-out wire end 30 of the second parallel branch winding is positioned in the other magnetic pole.

Example ten

As shown in fig. 15, any phase winding of the stator core 20 includes two coil groups one, the two coil groups one are sequentially arranged along the radial direction of the stator core 20, the first coil group one is arranged on the radial first layer and the radial third layer of the stator core 20, and the second coil group one is arranged on the radial second layer and the radial fourth layer of the stator core 20;

the coil group comprises 7 first conductor groups and 1 second conductor group, wherein the first conductor group comprises a first long-pitch conductor 300 and a first short-pitch conductor 200, the first long-pitch conductor 300 is arranged outside the first short-pitch conductor 200, the first long-pitch conductor 300 and the first short-pitch conductor 200 are arranged concentrically, two slot inner parts 301 on one side of the first long-pitch conductor 300 and the first short-pitch conductor 200 are arranged in two adjacent slots of the first layer, two slot inner parts 301 on the other side of the first long-pitch conductor 300 and the first short-pitch conductor 200 are arranged in two adjacent slots of the third layer, the pitch of the first long-pitch conductor 300 is 7, and the pitch of the first short-pitch conductor 200 is 5; the second conductor group comprises two first full-pitch conductors 100, the two first full-pitch conductors 100 are adjacently arranged, two groove inner parts 301 on one side of the two first full-pitch conductors 100 are positioned in two adjacent grooves on the first layer, two groove inner parts 301 on the other side are positioned in two grooves on the third layer, and the pitch of the first full-pitch conductors 100 is 6;

any phase winding of the stator winding 10 has two parallel branches, a leading end U1 to a leading end U3 are first parallel branch windings of the phase winding, a leading end U2 to a leading end U4 are second parallel branch windings of the phase winding, and leading ends 30 of the two parallel branch windings are both located at a plug end 40 of the phase winding; the leading-out wire end 30 of each parallel branch winding is arranged at any one second conductor group of the first coil group, and the leading-out wire of each parallel branch winding is formed by opening the wire inserting end 302 of one first full-pitch conductor 100 in the second conductor group; the leading-out wire ends 30 of the two parallel branch windings are in corresponding positions and are positioned at two groups of second conductor groups in the same radial direction of the stator core 20;

EXAMPLE eleven

In this embodiment, compared with the tenth embodiment, the first coil group has the same structure, but as shown in fig. 16, the leading end 30 of the first parallel branch winding is provided at one first conductor group of the second coil group, the plug end 302 of the first long-pitch conductor 300 in the first conductor group is opened to form the leading end U1 and the outlet end U3 of the first parallel branch winding, the leading end 30 of the second parallel branch winding is provided at the first conductor group of the first coil group, and the plug end 302 of the first long-pitch conductor 300 in the first conductor group is opened to form the leading end U2 and the outlet end U4 of the second parallel branch winding.

Example twelve

Compared with the tenth embodiment and the eleventh embodiment, the first coil group has the same structure, except that the leading end 30 of each parallel branch winding in each phase winding is provided with the welding end 50 of the phase winding, and the leading end 30 of the first parallel branch winding is located in one magnetic pole, and the leading end 30 of the second parallel branch winding is located in the other magnetic pole.

EXAMPLE thirteen

As shown in fig. 17, any phase winding of the stator core 20 includes two coil groups one, the two coil groups one are sequentially arranged along the radial direction of the stator core 20, the first coil group one is arranged on the radial first layer and the radial third layer of the stator core 20, and the second coil group one is arranged on the radial second layer and the radial fourth layer of the stator core 20;

the coil group comprises 7 first conductor groups and 1 second conductor group, wherein the first conductor group comprises a first full-pitch conductor 100 and a second short-pitch conductor 400, the first full-pitch conductor 100 is arranged outside the second short-pitch conductor 400, the first full-pitch conductor 100 and the second short-pitch conductor 400 are arranged concentrically, two slot inner parts 301 on one side of the first full-pitch conductor 100 and the second short-pitch conductor 400 are arranged in two adjacent slots of the first layer, two slot inner parts 301 on the other side of the first full-pitch conductor 100 and the second short-pitch conductor 400 are arranged in two adjacent slots of the third layer, the pitch of the first full-pitch conductor 100 is 6, and the pitch of the second short-pitch conductor 400 is 4; the second conductor group includes two first short-pitch conductors 200, the two first short-pitch conductors 200 are adjacently arranged, two slot interiors 301 on one side of the two first short-pitch conductors 200 are located in two adjacent slots on the first layer, two slot interiors 301 on the other side are located in two slots on the third layer, and the pitch of the first short-pitch conductors 200 is 5;

any phase winding of the stator winding 10 has two parallel branches, a leading end U1 to a leading end U3 are first parallel branch windings of the phase winding, a leading end U2 to a leading end U4 are second parallel branch windings of the phase winding, and leading ends 30 of the two parallel branch windings are both located at a plug end 40 of the phase winding; the outgoing line end 30 of each parallel branch winding is provided at any one of the second conductor groups of the first coil group, and the outgoing line of each parallel branch winding is formed by opening the plug end 302 of one first short-pitch conductor 200 in the second conductor group; the leading-out wire ends 30 of the two parallel branch windings are in corresponding positions and are positioned at two groups of second conductor groups in the same radial direction of the stator core 20;

Example fourteen

In this embodiment, compared with the thirteenth embodiment, the first coil group has the same structure, but as shown in fig. 18, the leading end 30 of the first parallel branch winding is provided at one first conductor group of the second coil group, the plug end 302 of the first full-pitch conductor 100 in the first conductor group is opened to form the leading end U1 and the outlet end U3 of the first parallel branch winding, the leading end 30 of the second parallel branch winding is provided at one first conductor group of the first coil group, and the plug end 302 of the first full-pitch conductor 100 in the first conductor group is opened to form the leading end U2 and the outlet end U4 of the second parallel branch winding.

Example fifteen

Compared with the thirteenth embodiment and the fourteenth embodiment, the first coil group has the same structure, except that the leading end 30 of each parallel branch winding in each phase winding is provided with the welding end 50 of the phase winding, the leading end 30 of the first parallel branch winding is located in one magnetic pole, and the leading end 30 of the second parallel branch winding is located in the other magnetic pole.

Example sixteen

As shown in fig. 19, any phase winding of the stator core 20 includes two coil groups one, the two coil groups one are sequentially arranged along the radial direction of the stator core 20, the first coil group one is arranged on the radial first layer and the radial third layer of the stator core 20, and the second coil group one is arranged on the radial second layer and the radial fourth layer of the stator core 20;

the coil group comprises 7 first conductor groups and 1 second conductor group, wherein the first conductor group comprises a second long-pitch conductor 500 and a first full-pitch conductor 100, the second long-pitch conductor 500 is arranged outside the first full-pitch conductor 100, the second long-pitch conductor 500 is arranged concentrically with the first full-pitch conductor 100, two groove interiors 301 on one side of the second long-pitch conductor 500 and the first full-pitch conductor 100 are arranged in two adjacent grooves on the first layer, two groove interiors 301 on the other side are arranged in two adjacent grooves on the third layer, the pitch of the second long-pitch conductor 500 is 8, and the pitch of the first full-pitch conductor 100 is 6; the second conductor group comprises two first long-pitch conductors 300, the two first long-pitch conductors 300 are adjacently arranged, two slot inner parts 301 on one side of the two first long-pitch conductors 300 are positioned in two adjacent slots on the first layer, two slot inner parts 301 on the other side are positioned in two slots on the third layer, and the pitch of the first long-pitch conductors 300 is 7;

any phase winding of the stator winding 10 has two parallel branches, a leading end U1 to a leading end U3 are first parallel branch windings of the phase winding, a leading end U2 to a leading end U4 are second parallel branch windings of the phase winding, and leading ends 30 of the two parallel branch windings are both located at a plug end 40 of the phase winding; the leading-out wire end 30 of each parallel branch winding is arranged at the second conductor group of the first coil group, and the leading-out wire of each parallel branch winding is formed by opening the plug wire end 302 of one first long-pitch conductor 300 in the second conductor group; the leading-out wire ends 30 of the two parallel branch windings are in corresponding positions and are positioned at two groups of second conductor groups in the same radial direction of the stator core 20;

Example seventeen

In this embodiment, compared with the sixteenth embodiment, the first coil group has the same structure, but as shown in fig. 20, the leading end 30 of the first parallel branch winding is provided at one first conductor group of the second coil group, the plug end 302 of the second long-pitch conductor 500 in the first conductor group is opened to form the leading end U1 and the outlet end U3 of the first parallel branch winding, the leading end 30 of the second parallel branch winding is provided at one first conductor group of the first coil group, and the plug end 302 of the first long-pitch conductor in the first conductor group is opened to form the leading end U2 and the outlet end U4 of the second parallel branch winding.

EXAMPLE eighteen

Compared with the sixteenth embodiment and the seventeenth embodiment, the first coil group has the same structure, except that the leading end 30 of each parallel branch winding in each phase winding is provided with the welding end 50 of the phase winding, the leading end 30 of the first parallel branch winding is positioned in one magnetic pole, and the leading end 30 of the second parallel branch winding is positioned in the other magnetic pole.

Example nineteen

As shown in fig. 21 to 23, any phase winding of the stator core 20 includes two coil groups one, the two coil groups one are sequentially arranged along the radial direction of the stator core 20, the first coil group one is arranged on the radial first layer and the radial third layer of the stator core 20, and the second coil group one is arranged on the radial second layer and the radial fourth layer of the stator core 20;

the coil group comprises 4 first conductor groups and 4 second conductor groups, wherein the first conductor groups comprise two first full-pitch conductors 100, the two first full-pitch conductors 100 are adjacently arranged, two groove interiors 301 on one side of the two first full-pitch conductors 100 are positioned in two adjacent grooves on the first layer, two groove interiors 301 on the other side are positioned in two grooves on the third layer, and the pitch of the first full-pitch conductors 100 is 6; the second conductor group includes a first long-pitch conductor 300 and a first short-pitch conductor 200, the first long-pitch conductor 300 is arranged outside the first short-pitch conductor 200, the first long-pitch conductor 300 is arranged concentrically with the first short-pitch conductor 200, two slot interiors 301 of one side of the first long-pitch conductor 300 and the first short-pitch conductor 200 are arranged in two adjacent slots of the first layer, two slot interiors 301 of the other side are arranged in two adjacent slots of the third layer, the pitch of the first long-pitch conductor 300 is 7, and the pitch of the first short-pitch conductor 200 is 5;

any phase winding of the stator winding 10 has four parallel branches, a lead end U1 to a lead-out end U5 are first parallel branch windings of the phase winding, a lead end U2 to a lead-out end U6 are second parallel branch windings of the phase winding, a lead end U3 to a lead-out end U7 are third parallel branch windings of the phase winding, a lead end U4 to a lead-out end U8 are fourth parallel branch windings of the phase winding, and lead-out ends 30 of the four parallel branch windings are all located at a plug end 40 of the phase winding; the leading-out wire end 30 of each parallel branch winding is arranged at the second conductor group corresponding to the position of the first coil group, and the leading-out wire of each parallel branch winding is formed by opening the wire plugging end 302 of one first long-pitch conductor 300 and the wire plugging end 302 of the first short-pitch conductor 200 in the second conductor group; the leading-out wire ends 30 of the four parallel branch windings are in corresponding positions and are positioned at two groups of second conductor groups in the same radial direction of the stator core 20;

Example twenty

Compared with the nineteenth embodiment, the first coil groups have the same structure, except that, as shown in fig. 24, the leading line end 30 of each parallel branch winding is arranged at the first conductor group corresponding to the positions of the two first coil groups, and the leading lines of each two parallel branch windings are formed by opening the plug line ends 302 of the two first full-pitch conductors 100 in the first conductor group; the leading-out wire ends 30 of the four parallel branch windings are located at two first conductor sets in the same radial direction of the stator core 20 in a corresponding position.

Example twenty one

In this embodiment, compared with the nineteenth and twentieth embodiments, the first coil group has the same structure, except that, as shown in fig. 25, the lead-out wire end 30 of each parallel branch winding in each phase winding is provided with the welding end 50 of the phase winding, and the lead-out wire end 30 in the first parallel branch winding and the lead-out wire end 30 in the second parallel branch winding are located in one magnetic pole, and the lead-out wire end 30 in the third parallel branch winding and the lead-out wire end 30 of the fourth parallel branch winding are located in the other magnetic pole.

Example twenty two

As shown in fig. 26, any phase winding of the stator core 20 includes two coil groups one, the two coil groups one are sequentially arranged along the radial direction of the stator core 20, the first coil group one is arranged on the radial first layer and the radial third layer of the stator core 20, and the second coil group one is arranged on the radial second layer and the radial fourth layer of the stator core 20;

the coil group comprises 4 first conductor groups and 4 second conductor groups, wherein the first conductor groups comprise two first short-pitch conductors 200, the two first short-pitch conductors 200 are adjacently arranged, two slot inner parts 301 on one side of the two first short-pitch conductors 200 are positioned in two adjacent slots on the first layer, two slot inner parts 301 on the other side are positioned in two slots on the third layer, and the pitch of the first short-pitch conductors 200 is 5; the second conductor group comprises a first full-pitch conductor 100 and a second short-pitch conductor 400, the first full-pitch conductor 100 is arranged outside the second short-pitch conductor 400, the first full-pitch conductor 100 and the second short-pitch conductor 400 are arranged concentrically, two slot inner parts 301 on one side of the first full-pitch conductor 100 and the second short-pitch conductor 400 are arranged in two adjacent slots on the first layer, two slot inner parts 301 on the other side of the first full-pitch conductor 100 and the second short-pitch conductor 400 are arranged in two adjacent slots on the third layer, the pitch of the first full-pitch conductor 100 is 6, and the pitch of the second short-pitch conductor 400 is 4;

any phase winding of the stator winding 10 has four parallel branches, a lead end U1 to a lead-out end U5 are first parallel branch windings of the phase winding, a lead end U2 to a lead-out end U6 are second parallel branch windings of the phase winding, a lead end U3 to a lead-out end U7 are third parallel branch windings of the phase winding, a lead end U4 to a lead-out end U8 are fourth parallel branch windings of the phase winding, and lead-out ends 30 of the four parallel branch windings are all located at a plug end 40 of the phase winding; the leading-out wire end 30 of each parallel branch winding is arranged at the second conductor group corresponding to the position of the first coil group, and the leading-out wire of each parallel branch winding is formed by opening the wire plugging end 302 of one first full-pitch conductor 100 and the wire plugging end 302 of one second short-pitch conductor 400 in the second conductor group; the leading-out wire ends 30 of the four parallel branch windings are in corresponding positions and are positioned at two groups of second conductor groups in the same radial direction of the stator core 20;

Example twenty three

Compared with twenty-two embodiments, the first coil group has the same structure, but the lead-out wire end 30 of each parallel branch winding is arranged at the first conductor group corresponding to the positions of the two first coil groups, and the lead-out wires of each two parallel branch windings are formed by opening the plug wire end portions 302 of the two first short-pitch conductors 200 in the first conductor group, as shown in fig. 27; the leading-out wire ends 30 of the four parallel branch windings are located at two first conductor sets in the same radial direction of the stator core 20 in a corresponding position.

Example twenty-four

In this embodiment, compared with twenty-two and twenty-three embodiments, the coil group one has the same structure, except that the leading end 30 of each parallel branch winding in each phase winding is provided with the welding end 50 of the phase winding, the leading end 30 of the first parallel branch winding and the leading end 30 of the second parallel branch winding are located in one magnetic pole, and the leading end 30 of the third parallel branch winding and the leading end 30 of the fourth parallel branch winding are located in the other magnetic pole.

Example twenty-five

As shown in fig. 28, any phase winding of the stator core 20 includes two coil groups one, the two coil groups one are sequentially arranged along the radial direction of the stator core 20, the first coil group one is arranged on the radial first layer and the radial third layer of the stator core 20, and the second coil group one is arranged on the radial second layer and the radial fourth layer of the stator core 20;

the coil group comprises 4 first conductor groups and 4 second conductor groups, wherein the first conductor groups comprise two first long-pitch conductors 300, the two first long-pitch conductors 300 are adjacently arranged, two slot inner parts 301 on one side of the two first long-pitch conductors 300 are positioned in two adjacent slots on the first layer, two slot inner parts 301 on the other side are positioned in two slots on the third layer, and the pitch of the first long-pitch conductors 300 is 7; the second conductor group comprises a second long-pitch conductor 500 and a first full-pitch conductor 100, the second long-pitch conductor 500 is arranged outside the first full-pitch conductor 100, the second long-pitch conductor 500 is arranged concentrically with the first full-pitch conductor 100, the second long-pitch conductor 500 and two groove interiors 301 on one side of the first full-pitch conductor 100 are arranged in two adjacent grooves on the first layer, two groove interiors 301 on the other side are arranged in two adjacent grooves on the third layer, the pitch of the second long-pitch conductor 500 is 8, and the pitch of the first full-pitch conductor 100 is 6;

any phase winding of the stator winding 10 has four parallel branches, a lead end U1 to a lead-out end U5 are first parallel branch windings of the phase winding, a lead end U2 to a lead-out end U6 are second parallel branch windings of the phase winding, a lead end U3 to a lead-out end U7 are third parallel branch windings of the phase winding, a lead end U4 to a lead-out end U8 are fourth parallel branch windings of the phase winding, and lead-out ends 30 of the four parallel branch windings are all located at a plug end 40 of the phase winding; the leading-out wire end 30 of each parallel branch winding is arranged at the second conductor group corresponding to the position of the first coil group, and the leading-out wire of each parallel branch winding is formed by opening the wire plugging end 302 of one second long-pitch conductor 500 in the second conductor group and the wire plugging end 302 of the first full-pitch conductor 100; the leading-out wire ends 30 of the four parallel branch windings are in corresponding positions and are positioned at two groups of second conductor groups in the same radial direction of the stator core 20;

The structure of each phase winding in the stator winding 10 is the same, and the stator winding 10 structure is constructed.

Example twenty-six

Compared with twenty-fifth embodiment, the first coil group has the same structure, except that, as shown in fig. 29, the leading line end 30 of each parallel branch winding is arranged at the first conductor group corresponding to the positions of the two first coil groups, and the leading lines of each two parallel branch windings are formed by opening the plug end portions 302 of the two first long-pitch conductors 300 in the first conductor group; the leading-out wire ends 30 of the four parallel branch windings are located at two first conductor sets in the same radial direction of the stator core 20 in a corresponding position.

Example twenty-seven

Compared with twenty-fifth and twenty-sixth embodiments, the first coil group has the same structure, except that the leading-out wire end 30 of each parallel branch winding in each phase winding is provided with the welding end 50 of the phase winding, the leading-out wire end 30 in the first parallel branch winding and the leading-out wire end 30 in the second parallel branch winding are located in one magnetic pole, and the leading-out wire end 30 in the third parallel branch winding and the leading-out wire end 30 in the fourth parallel branch winding are located in the other magnetic pole.

Example twenty-eight

As shown in fig. 30 to 33, any phase winding of the stator core 20 includes two coil groups one, the two coil groups one are sequentially arranged along the radial direction of the stator core 20, the first coil group one is arranged on the radial first layer and the radial fourth layer of the stator core 20, and the second coil group one is arranged on the radial second layer and the radial third layer of the stator core 20;

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims

1. A stator winding for an electrical machine, comprising: any phase winding comprises at least two coil groups I, a plurality of the coil groups I are sequentially arranged along the radial direction of the stator core, wherein,

along the direction from the innermost layer to the outermost layer or the direction from the outermost layer to the innermost layer of the stator core, the first coil group is arranged on the Nth layer and the (N + M/2) th layer of the stator core, wherein M is the radial layer number of the stator core, or the first coil group is arranged on the innermost layer and the outermost layer of the stator core, and the Nth coil group is arranged on the radial (innermost layer + N) th layer and the (outermost layer-N) th layer or the (innermost layer-N) th layer and the (outermost layer + N) th layer of the stator core;

the winding of any phase further comprises an outgoing line end, the outgoing line end is arranged at a plug wire end or a welding end of the winding of any phase, and the outgoing line end is constructed by opening any position of the plug wire end or the welding end.

2. The stator winding of an electric machine of claim 1, wherein: when the number of the second conductor groups is one, the plurality of first conductor groups are arranged on two sides of the second conductor groups;

when the number of the second conductor groups is plural, the plurality of first conductor groups and the plurality of second conductor groups are alternately arranged along the circumferential direction of the stator core.

3. The stator winding of an electric machine of claim 2, wherein: opening from a patch end of at least one conductor of the first conductor set or the second conductor set, constructing the outlet wire end;

or, the two welding end parts welded from any one phase of the welding ends of any one phase of the winding are opened to construct the leading-out wire end.

4. A stator winding for an electrical machine according to any of claims 1-3, wherein: the positions of the leading-out wire ends of each branch are positioned in the same magnetic pole of the stator winding.

5. The stator winding of an electric machine of claim 4, wherein: at least two branches of any phase winding are connected in parallel;

6. The stator winding of an electric machine of claim 5, wherein: when any phase winding is provided with two parallel branches and the leading-out wire end of each branch is positioned at the wire plugging end of any phase winding, the two parallel branches are positioned at the same magnetic pole;

when any phase winding is provided with four parallel branches and the leading-out wire end of each branch is positioned at the wire plugging end of any phase winding, the four parallel branches are positioned at the same magnetic pole.

7. An electric machine stator winding according to any of claims 1-3, 5 and 6, characterized in that: the conductors in the first coil group are all conductors of the same type, welding end portions of the conductors extend along the circumferential direction of the stator core, and the extending directions of the welding end portions extend in opposite directions.

8. The stator winding of an electric machine of claim 7, wherein: the number of radial layers of the stator core is an even number of layers which is more than or equal to four.

9. The stator winding of an electric machine of claim 8, wherein: in the stator winding, the pitch between the two welded ends which are welded is a full pitch, and the full pitch is 6.

10. A stator winding for an electrical machine according to any one of claims 1-3, 5-6 and 8-9, wherein: the pitch of the conductors in the first conductor set is different from the pitch of the conductors in the second conductor set.

11. The stator winding of an electric machine of claim 10, wherein: the first conductor set comprises two first full-pitch conductors which are adjacently arranged, and the pitch of the first full-pitch conductors is 6;

or, the first conductor set comprises two adjacently arranged first short-pitch conductors, and the pitch of the first short-pitch conductors is 5;

or, the first conductor group comprises two adjacently arranged first long-pitch conductors, and the pitch of the first long-pitch conductors is 7.

12. The stator winding of an electric machine of claim 10, wherein: the first conductor group comprises a first long-pitch conductor and a first short-pitch conductor, the first long-pitch conductor is arranged around the outer part of the first short-pitch conductor, the pitch of the first long-pitch conductor is 7, and the pitch of the first short-pitch conductor is 5;

or, the first conductor group comprises a first full-pitch conductor and a second short-pitch conductor, the first full-pitch conductor is arranged around the outside of the second short-pitch conductor, the pitch of the first full-pitch conductor is 6, and the pitch of the second short-pitch conductor is 4;

or, the first conductor group comprises a second long-pitch conductor and a first full-pitch conductor, the second long-pitch conductor is arranged around the outside of the first full-pitch conductor, the pitch of the second long-pitch conductor is 8, and the pitch of the first full-pitch conductor is 6.

13. The stator winding of an electric machine of claim 11, wherein: the second conductor group comprises a first short-pitch conductor and a first long-pitch conductor, the first long-pitch conductor is arranged around the outside of the first short-pitch conductor, the pitch of the first long-pitch conductor is 7, and the pitch of the first short-pitch conductor is 5;

or, the second conductor group comprises a first full-pitch conductor and a second short-pitch conductor, the first full-pitch conductor is arranged around the outside of the second short-pitch conductor, the pitch of the first full-pitch conductor is 6, and the pitch of the second short-pitch conductor is 4.

14. The stator winding of an electric machine of claim 12, wherein: the second conductor group comprises two adjacently arranged first short-pitch conductors, and the pitch of the first short-pitch conductors is 5;

or, the second conductor group comprises two first full-pitch conductors which are adjacently arranged, and the pitch of the first full-pitch conductors is 6.

15. A stator for an electrical machine, comprising: comprising a stator core and a stator winding of an electrical machine according to any one of claims 1-14, which stator winding is arranged on the stator core.

16. An electric machine characterized by: comprising an electric machine stator according to claim 15.