CN212462917U - A motor stator winding, motor stator and motor - Google Patents

Abstract

The utility model provides a stator winding of a motor, which comprises at least one coil group 1, which is arranged on two radially adjacent layers of a stator iron core; at least one coil group 2 is arranged on two radially adjacent layers of the stator iron core; Group 3, coil group 3 is arranged on the radially inner first layer or outer first layer of the stator iron core; coil group 4, coil group 4 is arranged on the first layer opposite to the radial direction of coil group 3 in the stator iron core; wherein, The winding rotation direction of coil group 1 is opposite to that of coil group 2. The beneficial effect of the utility model is that there are few types of conductors used, the arrangement is simple, the bus bar and the bus bar can be eliminated, so that the welding end and the twisted groove extending inside the groove of the same radial layer in the stator iron core groove are twisted in the direction and the twisted groove. The distance is the same, so that the lead terminals and neutral points between the windings of each phase are arranged in any layer of any slot in the same radial direction, which reduces the complexity of the manufacturing process, reduces the production cost, and improves the processing efficiency.

Description

A motor stator winding, motor stator and motor

technical field

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

Background technique

The stator winding includes a plurality of hairpin coils, and the plurality of hairpin coils are inserted into the slots of the stator iron core according to a certain arrangement to form the single-phase winding or multi-phase winding of the required motor. The hairpin coils used in the prior art There are many types and complex arrangements, and a large number of bus bars and bus bars need to be used to connect the branches and neutral points of each phase winding; more than 90% of the stator windings in the prior art are the number of slots per pole per phase. are greater than or equal to 2, but if the stator windings are connected in series between the phases, the twist direction or twist slot spacing of the welding ends located in the same layer of slots will be inconsistent, the manufacturing process is complex, the forming is difficult, the production cost is high, and the processing efficiency is low. .

SUMMARY OF THE INVENTION

In view of the above problems, the present invention provides a motor stator winding to solve the above or other former problems existing in the prior art.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the present utility model is: a motor stator winding, comprising,

At least one coil group 1 is arranged on two adjacent layers in the radial direction of the stator core;

At least one coil group two is arranged on two adjacent layers in the radial direction of the stator core;

Coil group 3, coil group 3 is arranged on the radial inner first layer or the outer first layer of the stator core;

Coil group 4, coil group 4 is arranged on the first layer opposite to the radial direction of coil group 3 in the stator core;

Wherein, the overlapping rotation direction of coil group one is opposite to the overlapping rotation direction of coil group two.

Further, both the first coil group and the second coil group include multiple conductors or multiple conductor groups, and the multiple conductors or multiple conductor groups are arranged in sequence along the circumferential direction of the stator core, and the multiple conductors or multiple conductor groups of the coil group one or The overlapping rotation direction of the multiple conductor groups is opposite to the overlapping rotation direction of the multiple conductors or multiple conductor groups of the second coil group;

Wherein, the conductor group includes a conductor one and a conductor two, and the conductor one is arranged outside the conductor two.

Further, the conductor, conductor 1 and conductor 2 all include a conductor body, a welding end portion 1 and a welding end portion 2, the welding end portion 1 and the welding end portion 2 are both connected to the conductor body, and the welding end portion 1 and the welding end portion 2 are connected. Extending along the circumferential direction of the stator core, the extending directions of the welding end part 1 and the welding end part 2 are opposite or opposite directions; wherein,

The conductor body includes a wire insertion end, an inner slot 1 and an inner slot 2. One end of the inner slot 1 and one end of the inner slot 2 are both connected to the wire insertion end. The inner slot 1 and the inner slot 2 are respectively set at the diameter of the stator core. To two adjacent layers, the span between the inner part one of the slot and the inner part two of the slot is a full pitch or a long pitch or a short pitch.

Further, the conductor of coil group 1 or the welding end portion 1 of the conductor group and the conductor of the coil group 2 or the welding end portion 1 of the conductor group extend in opposite directions; The sum of the extension spans is the whole pitch;

During the winding rotation, the direction of rotation of the wire insertion end of the first coil group is opposite to that of the wire insertion end of the second coil group.

Further, the span between the inner slot 1 of the conductor and the inner slot 2 of the conductor is a full pitch;

The span between the inner slot 1 of the conductor 1 and the inner slot 2 of the conductor 1 is a long pitch, and the span between the inner slot 1 of the conductor 2 and the inner slot 2 of the conductor 2 is a short pitch; or, the inner slot 1 of the conductor 1 is a short pitch. The span with the inner two of the slot is a short pitch, and the span between the inner slot 1 of the conductor 2 and the inner two of the slot is a long pitch.

Further, the coil set 3 includes a plurality of conductors 3, and the plurality of conductors 3 are arranged in sequence along the peripheral side of the stator core; wherein, the conductors 3 include welding end portion 3 and welding end portion 4, welding end portion 3 and welding end portion. Parts four extend along the circumferential direction of the stator core, and the sum of the extension spans of the two welded ends three and one or two of the welded ends is the full pitch, or the two welded ends. The sum of the extension spans of each welding end part 4 and the welding end part 1 or the welding end part 1 is the whole pitch, and the welding end part 3 and the welding end part 4 extend in the same direction;

The conductor 3 also includes the inner slot 3 and the slot inner 4, the inner slot 3 and the slot inner 4 are set on the same radial layer of the stator core, and the span between the slot inner 3 and the slot inner 4 is a short pitch or Long pitch.

Further, the coil set 4 includes a plurality of conductors 4, and the plurality of conductors 4 are arranged in sequence along the peripheral side of the stator core; wherein, the conductor 4 includes a welding end portion 5 and a welding end portion 6, and the welding end portion 5 and the welding end portion. Parts 6 and 6 all extend along the circumference of the stator core, and the sum of the extension spans of the two welded end parts 5 and the welding end part 1 or the welding end part 2 is the whole pitch, or the two welded end parts The sum of the extension spans of each welding end part 6 and the welding end part 1 or the welding end part 2 is the whole pitch, and the welding end part 5 and the welding end part 6 extend in the same direction;

The conductor 4 also includes a slot inner 5 and a slot inner 6, and the slot inner 5 and the slot inner 6 are arranged on the same radial layer of the stator core, and the span between the slot inner 5 and the slot inner 6 is a full pitch.

Further, the number of radial layers of the stator core is an even number of layers greater than or equal to 6.

A motor stator includes a stator iron core and the above-mentioned motor stator winding, and the stator winding is set on the stator iron core.

A motor includes the above-mentioned motor stator.

Due to the above technical solution, there is at least one coil group 1 and at least one coil group 2, the coil group 1 and the coil group 2 are arranged on the stator iron core, and the coil group 1 and the coil group 2 are both arranged adjacent to the stator iron core Two layers, at the same time, the coil group 1 is composed of a plurality of conductors or conductor groups of the same structure, and the coil group 2 is composed of a plurality of conductors or conductor groups of the same structure. Similar to the structure of the conductors or conductor groups of coil group 2, there are few types of conductors used, and the arrangement is simple. The bus bars and bus bars can be eliminated. The welding end of coil group 1 and the welding end of coil group 2 extend direction. On the contrary, the overlapping rotation directions of coil group 1 and coil group 2 are opposite, so that the twisting direction and twisting slot pitch of the welding end extending inside the slot of the same layer in the radial direction in the stator core slot are consistent, and the lead wires between the windings of each phase are realized. The end and the neutral point are arranged in any layer of any groove in the same radial direction, which reduces the complexity of the manufacturing process, reduces the production cost and improves the processing efficiency.

Description of drawings

1 is a schematic diagram of the stator structure of Embodiment 1 of the present invention;

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

3 is a schematic structural diagram of a stator winding one-phase winding according to Embodiment 1 of the present invention;

Fig. 4 is another perspective structural schematic diagram of the stator winding of Fig. 3;

FIG. 5 is a schematic structural diagram of the conductor three of the coil group three according to the first embodiment of the present invention;

6 is a schematic structural diagram of a conductor of coil set 1 according to Embodiment 1 of the present invention;

7 is a schematic structural diagram of the conductors of the second coil group according to the first embodiment of the present invention;

8 is a schematic structural diagram of conductor four of coil set four according to Embodiment 1 of the present invention;

9 is a schematic diagram of a stator winding winding method according to Embodiment 1 of the present invention;

10 is a schematic diagram of the distributed connection structure of the one-phase windings according to the first embodiment of the present invention;

11 is a schematic structural diagram of the stator winding according to the second embodiment of the present invention;

12 is a schematic structural diagram of a phase winding of the stator winding according to the second embodiment of the present invention;

13 is a schematic structural diagram of conductor 1 of coil group 1 according to Embodiment 2 of the present invention;

14 is a schematic structural diagram of conductor 2 of coil set 1 according to Embodiment 2 of the present invention;

15 is a schematic structural diagram of conductor 1 of coil set 2 according to Embodiment 2 of the present invention;

16 is a schematic structural diagram of the second conductor of the second coil group according to the second embodiment of the present invention;

17 is a schematic structural diagram of a conductor set of coil set 1 according to Embodiment 2 of the present invention;

18 is a schematic structural diagram of a conductor set of coil set 2 according to Embodiment 2 of the present invention;

19 is a schematic diagram of the winding method of the stator winding according to the second embodiment of the present invention;

20 is a schematic diagram of the distributed connection structure of the one-phase windings according to the second embodiment of the present invention;

21 is a schematic structural diagram of the stator winding according to the third embodiment of the present invention;

22 is a schematic structural diagram of a phase winding of the stator winding according to the third embodiment of the present invention;

23 is a schematic diagram of the winding method of the stator winding according to the third embodiment of the present invention;

24 is a schematic structural diagram of the stator winding according to the fourth embodiment of the present invention;

25 is a schematic structural diagram of a phase winding of the stator winding according to the fourth embodiment of the present invention.

In the picture:

10, stator winding 20, stator core 21, slot

22. Teeth 110, coil group three 120, coil group one

130, coil group two 140, coil group four 210, conductor three

220, conductor of coil group one 230, conductor of coil group two 240, conductor four

1-301-1, inside the slot three 1-301-2, inside the slot four 1-302, plug-in end

1-303-1, welding end three 1-303-2, welding end four 2-301-1, inner groove one

2-301-2, the inner part of the slot 2 2-302, the plug end 2-303-1, the welding end 1

2-303-2, welding end two 3-301-1, groove inner one 3-301-2, groove inner two

3-302, plug-in end 3-303-1, welding end one 3-303-2, welding end two

4-301-1, inside the slot five 4-301-2, inside the slot six 4-302, plug-in end

4-303-1, welding end five 4-303-2, welding end six 220A, conductor one

220B, conductor two 2A-301-1, inner slot one 2A-301-2, slot inner two

2A-302, plug-in end 2A-303-1, welding end one 2A-303-2, welding end two

2B-301-1, inside the slot one 2B-301-2, inside the slot two 2B-302, plug-in end

2B-303-1, welding end one 2B-303-2, welding end two 230A, conductor one

230B, conductor two 3A-301-1, inner slot one 3A-301-2, slot inner two

3A-302, plug-in end 3A-303-1, welding end one 3A-303-2, welding end two

3B-301-1, inside the slot one 3B-301-2, inside the slot two 3B-302, plug-in end

3B-303-1, welding end one 3B-303-2, welding end two 220’, conductor set

230', conductor set

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

1-25 are schematic structural diagrams of some embodiments of the present invention, specifically showing the structures of some embodiments. Some embodiments of the present invention all relate to a motor stator winding, a motor stator, and a motor. The motor stator The winding has a plurality of coil groups 1 and 2, each coil group 1 or coil group 2 is formed by overlapping a plurality of conductors with the same structure, and the structures of the conductors in different coil groups are similar. The winding rotation direction of the coil group 2 is opposite, which makes the stator winding use fewer types of conductors, and the arrangement is simple. The bus bar and the bus bar are eliminated, so that the inside of the slot located on the same radial layer in the stator core slot extends to the outer end of the slot. The direction and the twisted slot pitch are the same, so that the lead terminals and neutral points between the windings of each phase are arranged on any layer of any slot in the same radial direction, which reduces the complexity of the manufacturing process, reduces the production cost, and improves the processing efficiency.

A motor stator winding 10, as shown in Figures 1-25, includes,

At least one coil group 1 120 is arranged on two adjacent layers in the radial direction of the stator core 20 , the coil group 1 120 may be one or more, and each coil group 1 120 is set on a radial phase of the stator iron core 20 . adjacent two floors;

At least one coil group 2 130 is arranged on two adjacent layers in the radial direction of the stator core 20 , the coil group 2 130 may be one or more, and each coil group 2 130 is set on a radial phase of the stator iron core 20 . adjacent two floors;

The first coil group 120 and the second coil group 130 can be arranged adjacent to each other, or arranged at intervals, which can be selected according to actual needs;

Wherein, the overlapping rotation direction of coil group one 120 is opposite to that of coil group two 130, that is, the overlapping rotation direction of coil group one 120 is clockwise, then the overlapping rotation direction of coil group two 130 The direction is counterclockwise; or, the rotation direction of the coil group 1 120 is counterclockwise, then the rotation direction of the coil group 2 130 is clockwise, which is set according to the actual needs, and the rotation direction of the coil group is opposite. The arrangement of the first coil group 120 and the second coil group 130 is simple, the twist direction and twist slot pitch of each coil group are consistent, the manufacturing process is simple, and the processing efficiency is high.

Specifically, the first coil group 120 and the second coil group 130 each include multiple conductors or multiple conductor groups, and the multiple conductors or multiple conductor groups are sequentially arranged along the circumferential direction of the stator core 20 . The rotation direction of the stacking of the plurality of conductors or the plurality of conductor groups is opposite to that of the plurality of conductors or the plurality of conductor groups of the coil group 2 130. The coil group 1 120 is composed of the plurality of conductors or conductor groups along the stator core. 20 are arranged in turn in the circumferential direction, and are stacked and wound concentrically. Each conductor or conductor group is arranged on two adjacent layers. The twisting modes of the conductors or conductor groups are the same, so that the coil group 1 120 is easily installed on the stator core 20, and the number of conductors or conductor groups of the coil group 120 is selected according to the number of slots in the stator iron core 20; The second 130 consists of a plurality of conductors or conductor groups that are sequentially arranged along the circumferential direction of the stator core 20, and are stacked and arranged concentrically. Each conductor or conductor group is arranged on two adjacent layers, and a plurality of conductors or conductor groups The direction of rotation is the same when winding, so that the twisting modes of the multiple conductors or conductor groups of the second coil group 130 are consistent, so that the second coil group 130 can be installed on the stator core 20, and the number of conductors or conductor groups of the second coil group 130 is determined according to the stator. The number of slots of the iron core 20 is selected; when the coil group 1 120 and the coil group 2 130 are stacked and installed on the stator iron core 20, the overlapping rotation direction of the coil group 1 120 is opposite to that of the coil group 2 130. The conductors of the same layer of the stator core 20 or the conductor groups located outside the slots have the same twist direction and the same twist span, so that the overall stator winding 10 is simple in structure and arrangement.

Among them, the conductor is a single structure, the conductor group is a composite structure, the conductor group includes a conductor 1 and a conductor 2, the conductor 1 is arranged outside the conductor 2, and the conductor 1 and the conductor 2 are arranged coaxially, and the conductor 2 is arranged inside the conductor 1. , the conductor two surrounds the conductor one, and the conductor one and the conductor two are roughly the same in structure, so that the structure of a single conductor group is roughly the same as that of a single conductor, thereby making the overall structure of the coil group one 120 and the coil group two 130 similar, which is convenient for the coil The first group 120 and the second coil group 130 are stacked and installed on the stator iron core 20, and at the same time, the structure is complementary in space, the structure is compact, the arrangement is simple, and the space occupied is small.

The coil group 1 120 may be formed by overlapping multiple conductors, or may be formed by overlapping multiple conductor groups, and each conductor or each conductor group is arranged on two adjacent layers of the stator core 20; the coil The second group 130 can be formed by stacking a plurality of conductors, or by stacking a plurality of conductor groups, and each conductor or each conductor group is arranged on two adjacent layers of the stator core 20; the coil group When the first coil group 120 and the second coil group 130 are overlapped and wound on the stator core 20, it can be: one coil group one 120, one coil group two 130, or one coil group one 120, multiple coil groups two 130, or more One coil group 120, one coil group two 130, or multiple coil groups one 120 and multiple coil groups two 130, are selected according to actual needs; wherein, each coil group one 120 may include multiple conductors or multiple There are several conductor groups, and each coil group 2 130 may include multiple conductors or conductor groups, which are selected according to actual needs, so that there are fewer types of conductors constituting coil group 1 and coil group 2, and the arrangement is simple, eliminating the need for bus bars and bus bars. so that the twisting direction and twisting slot pitch of the welding end extending inside the slot of the same radial layer in the stator core slot are consistent, so as to realize that the lead end and the neutral point between the windings of each phase are arranged in any slot in the same radial direction. any layer.

The above-mentioned conductor, conductor 1 and conductor 2 are similar in structure, and conductor, conductor 1 and conductor 2 all include conductor body, welding end portion 1 and welding end portion 2, and welding end portion 1 and welding end portion 2 are both connected with the conductor body, and The welding end portion 1 and the welding end portion 2 extend along the circumferential direction of the stator core 20 , and the extending directions of the welding end portion 1 and the welding end portion 2 are opposite or opposite directions. The welding end part 1 and the slot outer end plate 2 are located at one end of the outer part of the stator core 20, and the welding end part 1 and the welding end part 2 are respectively connected to the two ends of the conductor body. Both the first and second welding ends extend along the circumferential direction of the stator core 20 for a certain length, and the length is a prescribed slot pitch, which is selected according to actual needs.

The extension directions of the welding end part 1 and the welding end part 2 are opposite to each other, that is, the extension direction of the welding end part 1 and the welding end part 2 are opposite, and at the same time, the welding end part 1 and the welding end part 2 can be extended in opposite directions, or It is the opposite direction away from the extension, set according to actual needs.

The conductors of the first coil group 120 or the welding end portion 1 and the welding end portion 2 of the conductor group and the extending directions of the welding end portion 1 and the welding end portion 2 of the conductor or the conductor group of the coil group 2 130 both extend in the opposite direction, and the extension direction Instead, choose based on actual needs.

In some of the following embodiments, the conductors of the first coil group 120 or the soldered end portions of the conductor group 1 extend in opposite directions to the conductors of the second coil group 130 or the soldered end portions of the conductor groups. The welding end part 1 and the welding end part 2 of the conductor or the conductor group and the extending direction of the welding end part 1 and the welding end part 2 of the conductor or conductor group of the coil group 2 130 both extend in the opposite direction, and one extends in the opposite direction, and the other extends in the opposite direction. One is extending away from each other.

The extension length of the welding end part 1 and the welding end part 2 is a specified slot distance, which is selected according to actual needs. Preferably, in some of the following embodiments, the extension length of the welding end part 1 and the welding end part 2 is the whole pitch. Half, the sum of the extension spans of the two welded ends one and two welded ends is the full distance.

The above-mentioned conductor body includes a wire insertion end, an inner slot 1 and an inner slot 2, one end of the inner slot 1 and one end of the inner slot 2 are both connected to the end of the insertion wire, and the inner slot 1 and the inner slot 2 are respectively set in the stator core. 20 radially adjacent two layers, the span between the inner part one of the slot and the inner part two of the slot is a full pitch or a long pitch or a short pitch, the end of the plug wire is U-shaped or V-shaped, located in the stator core The other end of the outer part of 20 shows the twisting direction of the welding end of the coil assembly. One end of the inner slot 1 and one end of the inner slot 2 are respectively connected to the two ends of the plug wire end, and the connection method is preferably integrally formed. During the stacking rotation, the turning direction of the plug-in end of the coil set 1 120 and the plug-in end of the coil set 2 130 are opposite, so that the stacking rotation direction of the coil set 1 120 and the stacking rotation direction of the coil set 2 130 are opposite. on the contrary.

Slot inner 1 and slot inner 2 are located in the two slots of two radially adjacent layers of the stator core 20, and the span between slot inner 1 and slot inner 2 is a predetermined slot pitch, which is a full pitch or a long distance. Pitch or short pitch, choose according to actual needs. The span between inner slot 1 and inner slot 2 of the conductor of coil group 1 120 may be the same as the span between inner slot 1 and inner slot 2 of the conductor of coil group 2 130, both of which are full pitch or long pitch. Alternatively, the span between the inner slot 1 and the inner slot 2 of the conductor of the coil group 1 120 and the span between the inner slot 1 and the inner slot 2 of the conductor of the coil group 2 130 may also be different. In the same way, the span between the inner slot 1 and the inner slot 2 of the conductor of one coil group is the full pitch, and the span between the inner slot 1 and the inner slot 2 of the conductor of the other coil group is the long pitch and the short pitch, according to Choose according to actual needs.

In the conductor set of coil set 1 120, the span between the inner slot 1 of the conductor 1 and the inner slot 2 of the conductor 1 is different from the span between the inner slot 1 of the conductor 2 and the inner slot 2 of the conductor 2. In the coil set 1 120, the span between the inner slot 1 of the conductor 1 and the inner slot 2 of the conductor 1 is larger than the span between the inner slot 1 and the inner slot 2 of the conductor 2, so that the conductor 2 can be arranged inside the conductor 1. , the conductor one surrounds the conductor two to form the structure of the conductor group. When the span between the inner slot 1 of the conductor 1 and the inner slot 2 of the conductor 1 is a long pitch, the span between the inner slot 1 of the conductor 2 and the inner slot 2 of the conductor 2 is a short pitch; or, the slot of the conductor 1 When the span between inner 1 and slot inner 2 is a short pitch, the span between slot inner 1 and slot inner 2 of conductor 2 is a long pitch.

The stator winding 10 further includes a third coil group 110 , which is disposed on the radially inner first layer or the outer first layer of the stator iron core 20 , and is arranged concentrically.

The coil set 3 110 includes a plurality of conductors 3 210, and the plurality of conductors 3 210 are arranged in sequence along the circumference of the stator core 20; wherein the structure of the conductors 3 210 is similar to that of the conductors, including welding ends and plug-in ends. and the inside of the slot, the plug-in end, the inside of the slot and the welding end are connected in sequence.

The welding end includes welding end three and welding end four. Both welding end three and welding end four extend along the circumferential direction of the stator core. The extension length of welding end three and welding end four is specified. Slot pitch, preferably, the prescribed slot pitch is half of the whole pitch, and the sum of the extension spans of the two welded end portions 3 and the welded end portion 1 or the welded end portion 2 is the full pitch, or The sum of the extension spans of the two welding ends four and the welding end one or the welding end two is the full distance.

The welding end part 3 and the welding end part 4 extend in the same direction, and are selected according to actual needs.

The inside of the slot includes the inner three and the fourth, the inner three and the fourth are set on the same radial layer of the stator core, and the span between the inner three and the fourth is a short pitch or long. Pitch, choose according to actual needs.

The stator winding 10 further includes a fourth coil group 140 , which is arranged on the first layer in the stator core 20 that is radially opposite to the third coil group, and is arranged concentrically according to actual requirements. When the coil group 3 110 is arranged on the radially inner first layer of the stator iron core 20, the coil group 4 140 is arranged in the radial Nth layer of the stator iron core, and N is also the largest layer in the radial direction of the stator iron core; or, when When the third coil group 110 is provided on the first layer on the radially outer side of the stator iron core 20 , the fourth coil group 140 is provided on the first layer on the radially inner side of the stator iron core.

The coil set 4 140 includes a plurality of conductors 4 240, and the plurality of conductors 4 240 are sequentially arranged along the peripheral side of the stator core 20; wherein, the structure of the conductor 4 240 is similar to that of the conductor, including the welding end and the plug-in end. and the inside of the slot, the plug-in end, the inside of the slot and the welding end are connected in sequence.

The welding end includes welding end five and welding end six. The welding end five and welding end six extend along the circumferential direction of the stator core. The extension length of welding end five and welding end six is specified. Slot pitch, preferably, the prescribed length is half of the full pitch, like the extension span between the two welded ends five and the welded end one or the welded end two of the welding is a full pitch, or, like the two welded ends The sum of the extension spans of the welding end part 6 and the welding end part 1 or the welding end part 2 is the full distance.

The extension direction of the welding end part 5 and the welding end part 6 is the same or opposite or opposite direction, which can be selected according to actual needs.

The inner part of the slot includes the inner part five and the inner part 6 of the slot; Pitch or long pitch, choose according to actual needs.

A motor stator includes a stator iron core 20 and the above-mentioned motor stator winding 10. The stator winding 10 is set on the stator iron core 20, and each coil group of the stator winding 10 in each phase is connected in series in sequence.

The stator iron core 20 is formed by stacking a plurality of annular magnetic steel plates, and a plurality of insulating papers are inserted in the magnetic steel plate slots, or other annular metal plates can be stacked and formed. The stator iron core 20 can be selected according to actual needs. The axial direction of the stator iron core 20 is There are two end faces in the direction of the stator core 20; the radial inner surface of the stator core 20 has a plurality of slots 21, and the plurality of slots 21 are spaced at a predetermined slot pitch along the circumferential direction of the stator core, and the two side walls of the slots are The teeth 22, that is, two adjacent slots 21 define a tooth 22; the stator winding 10 is mounted on the stator core 20, wherein the stator winding 10 is three-phase, and the coil group in the stator winding 10 of each phase Connect in series in sequence, that is, the coil groups in U-phase are connected in series in sequence, the coil groups in V-phase are connected in series in sequence, and the coil groups in W-phase are connected in series in sequence, and each pole and each phase slot are greater than or equal to 2. The number of radial layers of the stator core 20 is an even number of layers greater than or equal to 6, which is set according to actual requirements.

A motor includes the above-mentioned motor stator.

In some of the following embodiments, the stator winding 10 is a three-phase stator winding, the number of slots per pole and each phase is 2, and the rotor has 12 magnetic poles, and the same is true for each phase of the three-phase stator winding 10, then the stator winding The number of slots 21 in the core 20 is equal to 72.

Example 1:

As shown in FIGS. 1-4 , the stator winding 10 includes coil group three 110 , at least one coil group one 120 , at least one coil group two 130 , and coil group four 140 , which are sequentially sleeved from the inside to the outside;

As shown in FIGS. 2-4 , 9 and 10 , the coil group 3 110 is located on the first layer on the inner side of the stator core 20 in the radial direction, and may also be located on the first layer on the outer side in the radial direction of the stator iron core 20 . In this embodiment, the coil group The third 110 is located on the first layer in the radial inner side of the stator iron core 20 , the coil group 1 120 is located in the second layer and the third layer in the radial inner side of the stator iron core 20 , and the coil group 2 130 is located in the fourth layer and the third layer in the radial direction of the stator iron core 20 . Five layers, the coil group four 140 is located on the sixth layer in the radial direction of the stator core 20;

As shown in FIGS. 5 , 9 and 10 , the coil group 3 110 includes a plurality of conductors 3 210 . In this embodiment, it includes 36 conductors 3 210 , and the conductors 3 210 include welding end portions 1-303-1 connected in sequence, and the inside of the slot. Three 1-301-1, plug-in end 1-302, slot four 1-301-2, welding end four 1-303-2, constitute U-shaped conductor three 210, among which, slot three 1-301- 1 and the inner slot 4 1-301-2 are respectively located in the two slots 21 of the same layer in the radial direction of the stator core 20 and separated by a predetermined slot pitch. In this embodiment, the inner slot 3 1-301-1 and the inner slot 4 1 The pitch between -301-2 is X, X is a short pitch, and the short pitch is preferably 5; the plug wire end 1-302 is located outside the axial end of the stator core 20, The two ends of the -302 are respectively connected with the inner three 1-301-1 of the slot and the inner four 1-301-2 of the slot; the welding end three 1-303-1 and the welding end four 1-303-2 are located in the stator core 20 Outside the other end of the axial direction, the welding end part 3 1-303-1 is connected with the groove inner part 3 1-301-1, the welding end part 4 1-303-2 is connected with the groove inner part 4 1-301-2, and the welding end part Both the three 1-303-1 and the welding end four 1-303-2 extend along the circumferential direction of the stator core 20 by a predetermined slot pitch Y/2. In this embodiment, Y is a full pitch, and the full pitch is preferably 6, the extension directions of the welding end part 3 1-303-1 and the welding end part 4 1-303-2 both extend in the same direction in the circumferential direction of the stator core 20; the welding end part 3 1-303-1 and the welding end part 4 1-303-2 is located on the same layer as the inner slot 3 1-301-1 and the inner slot 4 1-301-2, that is, the 36 conductors 3 210 of the coil group 3 110 are located at the first radial inner side of the stator core 20. layer within the 72 slots.

As shown in FIGS. 6 , 9 and 10 , the coil group 1 120 includes a plurality of conductors 220 . In this embodiment, the coil group 1 120 includes 72 conductors 220 . As shown in FIG. 6 , the conductors 220 include welding ends connected in sequence. Part 1 2-303-1, inner slot 1 2-301-1, plug end 2-302, slot inner 2 2-301-2, welding end 2 2-303-2, constitute U-shaped conductor 220, The inner slot one 2-301-1 and the slot inner two 2-301-2 are located in the two slots 21 of the stator core 20 radially adjacent to a predetermined slot pitch. In this embodiment, the slot inner one 2- 301-1 and the inner slot 2-301-2 are respectively located on the second and third layers in the radial direction of the stator core 20, and the inner slot 2-301-1 and the inner slot 2 2-301-2 are separated from each other. The pitch is Y, Y is the whole pitch, and the whole pitch is preferably 6; 2-301-1 is connected with the inner part 2-301-2 of the slot; the welding end part 1 2-303-1 and the welding end part 2 2-303-2 are located outside the other axial end of the stator core 20, and the welding end part One 2-303-1 is connected with the inner groove one 2-301-1, the welding end part two 2-303-2 is connected with the internal groove two 2-301-2, and the welding end part one 2-303-1 is connected with the welding end part The second 2-303-2 extends along the circumferential direction of the stator core 20 with a predetermined slot pitch Y/2. In this embodiment, Y is the full pitch, which is preferably 6, and the welding end portion one is 2- 303-1 and the welding end part two 2-303-2 extend in opposite directions and are far away; the welding end part one 2-303-1 and the inner slot one 2-301-1 are located in one of the two adjacent layers of the stator core 20 , such as the second layer, the welding end part two 2-303-2 and the slot inner two 2-301-2 are located in another layer, such as the third layer, that is, the 72 conductors 220 of the coil group one 120 are located in the stator core 20 Inside the 72 grooves of the second and third layers in the radial direction.

As shown in FIGS. 7 , 9 and 10 , the second coil group 130 includes a plurality of conductors 230 . In this embodiment, 72 conductors 230 are included. As shown in FIG. 7 , the conductors 230 include welding end portions one 3-303- 1. The inner part of the slot is 3-301-1, the end of the plug is 3-302, the inner part of the slot is 3-301-2, and the welding end part 2 is 3-303-2, which constitutes the U-shaped conductor 230, and the inner part of the slot is 3-301 -1 and the inner slot 2 3-301-2 are located in the two slots 21 of the stator core 20 which are radially adjacent to each other and separated by a predetermined slot pitch. In this embodiment, the inner slot 3-301-1 and the inner slot 21 The second 3-301-2 is located on the fourth and fifth layers in the radial direction of the stator core 20, respectively. The interval between the first 3-301-1 in the slot and the second 3-301-2 in the slot is Y, and Y is The whole pitch is preferably 6; the plug wire end 3-302 is located outside the axial end of the stator core 20, and the plug wire end 3-302 is respectively connected to the inner slot 3-301-1 and the slot The inner part 2 3-301-2 is connected; the welding end part 1 3-303-1 and the welding end part 2 3-303-2 are located outside the other axial end of the stator core 20, and the welding end part 1 3-303-1 is connected to The inner groove one 3-301-1 is connected, the welding end part 2 3-303-2 is connected with the groove inner part 2 3-301-2, the welding end part 1 3-303-1 is connected with the welding end part 2 3-303-2 A predetermined slot pitch Y/2 extends along the circumferential direction of the stator iron core 20. In this embodiment, Y is a full pitch, and the full pitch is preferably 6, and the welding end portion 3-303-1 and the welding end portion Two 3-303-2 extension directions are opposite and close; the welding end part one 3-303-1 and the inside of the slot one 3-301-1 are located in one of the two radially adjacent layers of the stator core 20, such as the fourth layer, the welding end part 2 3-303-2 and the slot inner part 2 3-301-2 are located on another layer, such as the fifth layer, that is, the 72 conductors 230 of the coil group 2 130 are located on the radial inner side of the stator core 20. In the 48 slots of the fourth and fifth layers.

As shown in FIGS. 8 , 9 and 10 , the coil group four 140 includes a plurality of conductors four 240 . In this embodiment, the coil group four 140 includes 36 conductors four 240 . As shown in FIG. 5 , the conductor four 240 includes sequentially connected The welding end part five 4-303-1, the inner part of the slot 4-301-1, the plug end part 4-302, the inner part of the slot 4-301-2, the welding end part 6 4-303-2, form a U shape Conductor 4 240, inner slot 5 4-301-1 and inner slot 6 4-301-2 are located in the two slots 21 of the same layer in the radial direction of the stator core 20 and separated by a predetermined slot pitch. In this embodiment, the inner slot 5 4-301-1 and 4-301-2 inside the slot are both located on the sixth layer in the radial direction of the stator core 20, and the pitch between the 4-301-1 inside the slot and the 4-301-2 inside the slot 6 is Y, Y are the full pitch, and the short pitch is preferably 6; the plug wire end 4-302 is located outside the axial end of the stator core 20, and the plug wire end 4-302 is respectively connected to the inner part of the slot 4-301 -1 is connected to the inner slot 6 4-301-2; welding end 5 4-303-1 and welding end 6 4-303-2 are located outside the other axial end of the stator core 20, and the welding end 5 4- 303-1 is connected to the inner part of the groove 4-301-1, the welding end part 6 4-303-2 is connected to the inner part of the groove 4-301-2, the welding end part 5 4-303-1 is connected to the welding end part 6 4- 303-2 extends along the circumferential direction of the stator core 20 with a predetermined slot pitch Y/2. In this embodiment, Y is the full pitch, and the full pitch is preferably 6. The welding end portion 4-303-1 and the The extension direction of the welding end part six 4-303-2 is the same, and the extension direction of the welding end part five 4-303-1 and the welding end part six 4-303-2 are opposite, that is, the welding end part in the coil group three 110 The welding ends in the coil group four 140 extend in the opposite direction along the circumferential direction of the stator core 20; The inner six 4-301-2 of the slot are located in the same layer, such as the sixth layer, that is, the 36 conductors four 240 of the coil group four 140 are located in the 72 slots of the sixth layer in the radial inner side of the stator core 20.

Embodiment 2

The stator winding 10 includes coil group three 110, at least one coil group one 120, at least one coil group two 130, and coil group four 140, which are sequentially sleeved from the inside to the outside;

As shown in FIGS. 11-12 , 19 and 20 , the third coil group 110 is located on the first layer on the inner side of the stator core 20 in the radial direction, and may also be located on the first layer on the outer side in the radial direction of the stator iron core 20 . In this embodiment, the coil group The third 110 is located on the first layer in the radial inner side of the stator iron core 20 , the coil group 1 120 is located in the second layer and the third layer in the radial inner side of the stator iron core 20 , and the coil group 2 130 is located in the fourth layer and the third layer in the radial direction of the stator iron core 20 . Five layers, the coil group four 140 is located on the sixth layer in the radial direction of the stator core 20;

As shown in FIGS. 5 , 19 and 20 , the coil group 3 110 includes a plurality of conductors 3 210 . In this embodiment, there are 36 conductors 3 210 , and the conductors 3 210 include welding end portions 1-303-1 connected in sequence, and the inside of the slot. Three 1-301-1, plug-in end 1-302, slot four 1-301-2, welding end four 1-303-2, constitute U-shaped conductor three 210, among which, slot three 1-301- 1 and the inner slot 4 1-301-2 are respectively located in the two slots 21 of the same layer in the radial direction of the stator core 20 and separated by a predetermined slot pitch. In this embodiment, the inner slot 3 1-301-1 and the inner slot 4 1 The pitch between -301-2 is X, X is a short pitch, and the short pitch is preferably 5; the plug wire end 1-302 is located outside the axial end of the stator core 20, The two ends of the -302 are respectively connected with the inner three 1-301-1 of the slot and the inner four 1-301-2 of the slot; the welding end three 1-303-1 and the welding end four 1-303-2 are located in the stator core 20 Outside the other end of the axial direction, the welding end part 3 1-303-1 is connected with the groove inner part 3 1-301-1, the welding end part 4 1-303-2 is connected with the groove inner part 4 1-301-2, and the welding end part Both the three 1-303-1 and the welding end four 1-303-2 extend along the circumferential direction of the stator core 20 by a predetermined slot pitch Y/2. In this embodiment, Y is a full pitch, and the full pitch is preferably 6, the extension directions of the welding end part 3 1-303-1 and the welding end part 4 1-303-2 both extend in the same direction in the circumferential direction of the stator core 20; the welding end part 3 1-303-1 and the welding end part 4 1-303-2 is located on the same layer as the inner slot 3 1-301-1 and the inner slot 4 1-301-2, that is, the 36 conductors 3 210 of the coil group 3 110 are located at the first radial inner side of the stator core 20. layer within the 72 slots.

As shown in FIGS. 13 , 14 and 17 , the first coil group 120 includes a plurality of conductor groups 220 ′. In this embodiment, there are 36 conductor groups 220 ′ 220 . The conductor group 220 ′ includes conductor one 220A and conductor two 220B. Conductor one The conductor 220A is disposed outside the conductor two 220B, the conductor one 220A surrounds the conductor two 220B, and the conductor one 220A and the conductor two 220B have similar structures and are coaxially arranged.

As shown in FIG. 13 , the conductor one 220A includes a welding end part one 2A-303-1, a slot inner part 2A-301-1, a plug wire end part 2A-302, a slot inner part two 2A-301-2, a welding end part 2A-301-2, The end part 2A-303-2 constitutes a U-shaped conductor 1 220A, and the inner slot 2A-301-1 and the inner slot 2A-301-2 are located at two radially adjacent layers of the stator core 20 separated by a predetermined slot pitch. In the two slots 21, in this embodiment, the inner slot one 2A-301-1 and the slot inner two 2A-301-2 are respectively located on the second and third layers in the radial direction of the stator core 20, and the slot inner one 2A The distance between -301-1 and the inner two 2A-301-2 of the slot is Z, Z is a long pitch, and the long pitch is preferably 7; Outside of one end, the plug-in end 2A-302 is respectively connected with the inner slot one 2A-301-1 and the slot inner two 2A-301-2; the welding end one 2A-303-1 and the welding end two 2A-303- 2 is located outside the other end of the stator core 20 in the axial direction, the welding end part 1 2A-303-1 is connected with the inner slot 2A-301-1, the welding end part 2A-303-2 is connected with the inner slot 2A-301-1 2. Connection, welding end part one 2A-303-1 and welding end part two 2A-303-2 extend along the circumferential direction of stator core 20 with a predetermined slot pitch Y/2, in this embodiment, Y is the whole pitch , the whole pitch is preferably 6, and the welding end part one 2A-303-1 and the welding end part two 2A-303-2 extend in opposite directions and are far away; the welding end part one 2A-303-1 and the groove inner part one 2A- 301-1 is located in one of the two adjacent layers of the stator core 20, such as the second layer, and the welding end part 2A-303-2 and the inner groove 2A-301-2 are located in another layer, such as the third layer.

As shown in FIG. 14 , the second conductor 220B includes a welding end part 1 2B-303-1, a groove inner part 2B-301-1, a plug wire end part 2B-302, a groove inner part 2B-301-2, a welding end part 2B-301-2, and a welding end part 2B-301-2 connected in sequence. The second end 2B-303-2 constitutes the second U-shaped conductor 220B. The inner slot 2B-301-1 and the inner slot 2B-301-2 are located at two radially adjacent layers of the stator core 20 separated by a predetermined slot pitch. In each slot 21, in this embodiment, the inner slot 2B-301-1 and the inner slot 2B-301-2 are respectively located on the second and third layers in the radial direction of the stator core 20, and the inner slot 2B The distance between -301-1 and the two 2B-301-2 inside the slot is X, X is a short pitch, and the short pitch is preferably 5; Outside of one end, the plug-in end 2B-302 is respectively connected with the inner slot 1 2B-301-1 and the inner slot 2B-301-2; the welding end 1 2B-303-1 and the welding end 2 2B-303- 2 is located outside the other end of the stator core 20 in the axial direction, the welding end part 1 2B-303-1 is connected with the inner slot 2B-301-1, the welding end part 2B-303-2 is connected with the inner slot 2B-301-1 2 Connection, welding end part one 2B-303-1 and welding end part two 2B-303-2 extend along the circumferential direction of stator core 20 with a predetermined slot pitch Y/2, in this embodiment, Y is the whole pitch , the whole pitch is preferably 6, and the welding end part one 2B-303-1 and the welding end part two 2B-303-2 extend in opposite directions and are far away; the welding end part one 2B-303-1 and the inner groove one 2B- 301-1 is located in one of the two adjacent layers of the stator core 20, such as the second layer, and the welding end part 2B-303-2 and the inner groove 2B-301-2 are located in another layer, such as the third layer.

As shown in FIG. 17 , the conductor one 220A surrounds the conductor two 220B. In this embodiment, the inner slot 2A-301-1 and the inner slot 2A-301-2 of the conductor one 220A are located in the first slot of the stator core 20 respectively. , the eighth slot, the inner slot one 2B-301-1 of the conductor two 220B and the inner slot 2B-301-2 of the slot two are located in the second slot and the seventh slot of the stator core 20, respectively, as shown in FIG. 18, that is, the conductor one 220A Surrounding the second conductor 220B, the 36 conductor groups 220 ′ of the first coil group 120 are located in the 72 slots of the second layer and the third layer in the radial inner side of the stator core 20 .

As shown in FIGS. 15 , 16 and 18 , the second coil group 130 includes a plurality of conductor groups 230 ′. In this embodiment, there are 36 conductor groups 230 ′. The conductor group 230 ′ includes conductor one 230A and conductor two 230B, and conductor one 230A. Located outside the conductor two 230B, the conductor one 230A surrounds the conductor two 230B, and the conductor one 230A and the conductor two 230B have similar structures and are arranged coaxially.

As shown in FIG. 15 , the conductor one 230A includes the welding end part one 3A-303-1, the inner groove part 3A-301-1, the plug wire end part 3A-302, the inner groove part 3A-301-2, the welding end part 3A-301-2, The end part 2 3A-303-2 constitutes a U-shaped conductor 1 230A, and the inner slot 3A-301-1 and the inner slot 2 3A-301-2 are located at two radially adjacent layers of the stator core 20 separated by a predetermined slot pitch. In the first slot 21, in this embodiment, the inner slot one 3A-301-1 and the slot inner two 3A-301-2 are respectively located on the fourth and fifth layers in the radial direction of the stator core 20, and the slot inner one 3A The distance between -301-1 and the inner two 3A-301-2 of the slot is Z, Z is a long pitch, and the long pitch is preferably 7; Outside of one end, the plug-in end 3A-302 is respectively connected with the inner slot 1 3A-301-1 and the inner slot 2 3A-301-2; the welding end 1 3A-303-1 and the welding end 2 3A-303- 2 is located outside the other end of the stator core 20 in the axial direction, the welding end part 1 3A-303-1 is connected with the inner slot 3A-301-1, the welding end part 2 3A-303-2 is connected with the inner slot 3A-301-1 2 Connection, welding end part 1 3A-303-1 and welding end part 2 3A-303-2 extend along the circumferential direction of stator core 20 with a predetermined slot pitch Y/2, in this embodiment, Y is the whole pitch , the whole pitch is preferably 6, and the welding end part one 3A-303-1 and the welding end part two 3A-303-2 extend in opposite and close directions; the welding end part one 3A-303-1 and the inner groove one 3A- 301-1 is located on one of the two adjacent layers of the stator core 20, such as the fourth layer, and the welding end part 2 3A-303-2 and the groove inner part 2 3A-301-2 are located on the other layer, such as the fifth layer.

As shown in FIG. 16 , the second conductor 230B includes a welding end part 1 3B-303-1, a groove inner part 3B-301-1, a plug wire end part 3B-302, a groove inner part 3B-301-2, a welding end part 3B-301-2, a welding end part 2 3B-301-2, The second end 3B-303-2 constitutes the second U-shaped conductor 230B, and the inner slot 1 3B-301-1 and the inner slot 2 3B-301-2 are located at two radially adjacent layers of the stator core 20 separated by a predetermined slot pitch. In the first slot 21, in this embodiment, the inner slot one 3B-301-1 and the slot inner two 3B-301-2 are respectively located on the fourth and fifth layers in the radial direction of the stator core 20, and the slot inner one 3B The distance between -301-1 and the inner part 3B-301-2 of the slot is X, X is a short pitch, and the short pitch is preferably 5; Outside of one end, the plug-in end 3B-302 is respectively connected with the inner slot 1 3B-301-1 and the inner slot 2 3B-301-2; the welding end 1 3B-303-1 and the welding end 2 3B-303- 2 is located outside the other end of the stator core 20 in the axial direction, the welding end part 1 3B-303-1 is connected with the inner slot 3B-301-1, and the welding end part 2 3B-303-2 is connected with the inner slot 2 3B-301- 2 Connection, welding end part one 3B-303-1 and welding end part two 3B-303-2 extend along the circumferential direction of stator core 20 with a predetermined slot pitch Y/2, in this embodiment, Y is the whole pitch , the whole pitch is 6, and the welding end part one 3B-303-1 and the welding end part two 3B-303-2 extend in opposite and close directions; the welding end part one 3B-303-1 and the inner groove one 3B-301 -1 is located in one of the two adjacent layers of the stator core 20, such as the fourth layer, and the welding end part 2 3B-303-2 and the groove inner part 2 3B-301-2 are located in another layer, such as the fifth layer.

As shown in FIG. 18 , the conductor one 230A surrounds the conductor two 230B. In this embodiment, the inner slot 3A-301-1 and the slot inner 2 3A-301-2 of the conductor one 230A are located in the first slot of the stator core 20 respectively. , the eighth slot, the inner slot 3B-301-1 of the conductor two 230B and the inner slot 3B-301-2 of the slot 2 are respectively located in the second slot and the seventh slot of the stator core 20, as shown in Figure 18, that is, the conductor one 230A Surrounding the second conductor 230B, the 36 conductor groups 230 ′ of the first coil group are located in the 72 slots of the fourth layer and the fifth layer in the radial inner side of the stator core 20 .

As shown in FIGS. 8 , 19 and 20 , the coil group four 140 includes a plurality of conductor four 240 . In this embodiment, the coil group four 140 includes 36 conductor four 240 . As shown in FIG. Soldering end five 4-303-1, groove inner five 4-301-1, plug-in end 4-302, groove inner six 4-301-2, welding end six 4-303-2, constitute U-shaped conductor Four 240, the inside of the slot five 4-301-1 and the inside of the slot six 4-301-2 are located in the two slots 21 of the same layer in the radial direction of the stator core 20 and separated by a predetermined slot pitch. In this embodiment, the inside of the slot five 4 -301-1 and slot inner six 4-301-2 are both located on the sixth layer in the radial direction of stator core 20, and the pitch between slot inner five 4-301-1 and slot inner six 4-301-2 is Y , Y is the full pitch, and the short pitch is preferably 6; the plug wire end 4-302 is located outside the axial end of the stator core 20, and the plug wire end 4-302 is respectively connected to the inner part of the slot 4-301- 1 is connected to the inner part of the slot 4-301-2; the welding end part 5 4-303-1 and the welding end part 6 4-303-2 are located outside the other axial end of the stator core 20, and the welding end part 5 4-303 -1 is connected to 4-301-1 of the inner part of the groove, 4-303-2 of the welding end part 6 is connected to the 4-301-2 of the inner part of the groove 6, and 4-303-1 of the welding end part 5 is connected to the 4-303 of the welding end part 6 -2 extends along the circumferential direction of the stator core 20 with a predetermined slot pitch Y/2, in this embodiment, Y is the full pitch, the full pitch is preferably 6, and the welding end portion 4-303-1 is connected to the welding The extension direction of the end part six 4-303-2 is the same, and the extension direction of the welding end part five 4-303-1 and the welding end part six 4-303-2 are opposite, that is, the welding end part in the coil group three 110 is the same as the welding end part six 4-303-2. The welding ends of the coil group four 140 are opposite to the circumferential extension direction of the stator core 20; The inner six 4-301-2 is located in the same layer, such as the sixth layer, that is, the 36 conductors four 240 of the coil group four 140 are located in the 72 slots of the sixth layer in the radial inner side of the stator core 20 .

Embodiment 3

The stator winding 10 includes coil group three 110, at least one coil group one 120, at least one coil group two 130, and coil group four 140, which are sequentially sleeved from the inside to the outside;

As shown in FIGS. 21-23 , the third coil group 110 is located on the first layer on the inner side of the stator core 20 in the radial direction, and may also be located on the first layer on the radial outer side of the stator iron core 20 . In this embodiment, the third coil group 110 is located in the stator core 20 . The first layer in the radial inner side of the iron core 20, the coil group one 120 is located in the second layer and the third layer in the radial inner side of the stator iron core 20, and the coil group two 130 is located in the fourth layer and the fifth layer in the radial direction of the stator iron core 20. Group four 140 is located on the sixth radial layer of the stator core 20;

As shown in FIGS. 5 and 23 , the coil group 3 110 includes a plurality of conductors 3 210 . In this embodiment, it includes 36 conductors 3 210 , and the conductors 3 210 include welding end portions 3 1-303-1 connected in sequence, and inner groove 3 1 . -301-1, plug-in end 1-302, inner slot 4 1-301-2, welding end 4 1-303-2, constitute U-shaped conductor 3 210, among which, slot inner 3 1-301-1 and The inner slots 4 1-301-2 are respectively located in the two slots 21 of the same layer in the radial direction of the stator core 20 separated by a predetermined slot pitch. In this embodiment, the inner slots 3 1-301-1 and the inner slots 4 1-301 The pitch between -2 is X, X is the short pitch, and the short pitch is preferably 5; The two ends of the welding end three 1-301-1 are connected to the inner slot 1-301-1 and the inner slot 4 1-301-2 respectively; On the outside of the other end, welding end part 3 1-303-1 is connected with groove inner part 3 1-301-1, welding end part 4 1-303-2 is connected with groove inner part 4 1-301-2, welding end part 3 1 -303-1 and welding end 4-1-303-2 both extend along the circumferential direction of the stator core 20 by a predetermined slot pitch Y/2, in this embodiment, Y is a full pitch, and the full pitch is preferably 6 , the extension directions of welding end part 3 1-303-1 and welding end part 4 1-303-2 extend in the same direction in the circumferential direction of stator core 20; welding end part 3 1-303-1 and welding end part 4 1- 303-2 is located on the same layer as the inner slot 3 1-301-1 and the inner slot 4 1-301-2, that is, the 36 conductors 3 210 of the coil group 3 110 are located in the first layer in the radial inner side of the stator core 20. 72 slots.

As shown in FIGS. 13 , 14 and 17 , the first coil group 120 includes a plurality of conductor groups 220 ′. In this embodiment, there are 36 conductor groups 220 ′ 220 . The conductor group 220 ′ includes conductor one 220A and conductor two 220B. Conductor one The conductor 220A is disposed outside the conductor two 220B, the conductor one 220A surrounds the conductor two 220B, and the conductor one 220A and the conductor two 220B have similar structures and are coaxially arranged.

As shown in FIG. 13 , the conductor one 220A includes a welding end part one 2A-303-1, a slot inner part 2A-301-1, a plug wire end part 2A-302, a slot inner part two 2A-301-2, a welding end part 2A-301-2, The end part 2A-303-2 constitutes a U-shaped conductor 1 220A, and the inner slot 2A-301-1 and the inner slot 2A-301-2 are located at two radially adjacent layers of the stator core 20 separated by a predetermined slot pitch. In the two slots 21, in this embodiment, the inner slot one 2A-301-1 and the slot inner two 2A-301-2 are respectively located on the second and third layers in the radial direction of the stator core 20, and the slot inner one 2A The distance between -301-1 and the inner two 2A-301-2 of the slot is Z, Z is a long pitch, and the long pitch is preferably 7; Outside of one end, the plug-in end 2A-302 is respectively connected with the inner slot one 2A-301-1 and the slot inner two 2A-301-2; the welding end one 2A-303-1 and the welding end two 2A-303- 2 is located outside the other end of the stator core 20 in the axial direction, the welding end part 1 2A-303-1 is connected with the inner slot 2A-301-1, the welding end part 2A-303-2 is connected with the inner slot 2A-301-1 2. Connection, welding end part one 2A-303-1 and welding end part two 2A-303-2 extend along the circumferential direction of stator core 20 with a predetermined slot pitch Y/2, in this embodiment, Y is the whole pitch , the whole pitch is preferably 6, and the welding end part one 2A-303-1 and the welding end part two 2A-303-2 extend in opposite directions and are far away; the welding end part one 2A-303-1 and the groove inner part one 2A- 301-1 is located in one of the two adjacent layers of the stator core 20, such as the second layer, and the welding end part 2A-303-2 and the inner groove 2A-301-2 are located in another layer, such as the third layer.

As shown in FIG. 14 , the second conductor 220B includes a welding end part 1 2B-303-1, a groove inner part 2B-301-1, a plug wire end part 2B-302, a groove inner part 2B-301-2, a welding end part 2B-301-2, and a welding end part 2B-301-2 connected in sequence. The second end 2B-303-2 constitutes the second U-shaped conductor 220B. The inner slot 2B-301-1 and the inner slot 2B-301-2 are located at two radially adjacent layers of the stator core 20 separated by a predetermined slot pitch. In each slot 21, in this embodiment, the inner slot 2B-301-1 and the inner slot 2B-301-2 are respectively located on the second and third layers in the radial direction of the stator core 20, and the inner slot 2B The distance between -301-1 and the inner two 2B-301-2 of the slot is X, X is a short pitch, and the short pitch is preferably 5; Outside of one end, the plug-in end 2B-302 is respectively connected with the inner slot 1 2B-301-1 and the inner slot 2B-301-2; the welding end 1 2B-303-1 and the welding end 2 2B-303- 2 is located outside the other end of the stator core 20 in the axial direction, the welding end part 1 2B-303-1 is connected with the inner slot 2B-301-1, the welding end part 2B-303-2 is connected with the inner slot 2B-301-1 2 Connection, welding end part one 2B-303-1 and welding end part two 2B-303-2 extend along the circumferential direction of stator core 20 with a predetermined slot pitch Y/2, in this embodiment, Y is the whole pitch , the whole pitch is preferably 6, and the welding end part one 2B-303-1 and the welding end part two 2B-303-2 extend in opposite directions and are far away; the welding end part one 2B-303-1 and the inner groove one 2B- 301-1 is located in one of the two adjacent layers of the stator core 20, such as the second layer, and the welding end part 2B-303-2 and the inner groove 2B-301-2 are located in another layer, such as the third layer.

As shown in FIG. 17 , the conductor one 220A surrounds the conductor two 220B. In this embodiment, the inner slot 2A-301-1 and the inner slot 2A-301-2 of the conductor one 220A are located in the first slot of the stator core 20 respectively. , the eighth slot, the inner slot one 2B-301-1 of the conductor two 220B and the inner slot 2B-301-2 of the slot two are located in the second slot and the seventh slot of the stator core 20, respectively, as shown in FIG. 18, that is, the conductor one 220A Surrounding the second conductor 220B, the 36 conductor groups 220 ′ of the first coil group 120 are located in the 72 slots of the second layer and the third layer in the radial inner side of the stator core 20 .

As shown in FIG. 7 , the second coil group 130 includes a plurality of conductors 230, and in this embodiment, 72 conductors 230 are included. As shown in FIG. 7 , the conductors 230 include a welding end part 1 3-303-1 connected in sequence, and the inner part of the slot 3-303-1. One 3-301-1, the plug end 3-302, the inner slot 2 3-301-2, the welding end 2 3-303-2, constitute the U-shaped conductor 230, the inner slot 3-301-1 and the slot The inner part 2 3-301-2 is located in the two slots 21 of the stator core 20 which are radially adjacent to each other and separated by a predetermined slot pitch. In this embodiment, the inner slot 1 3-301-1 and the inner slot 2 3-301 -2 are located on the fourth and fifth layers in the radial direction of the stator core 20, respectively. The pitch between the inner slot 1 3-301-1 and the inner slot 2 3-301-2 is Y, where Y is the full pitch, The whole pitch is preferably 6; the plug wire end 3-302 is located outside the axial end of the stator core 20, and the plug wire end 3-302 is respectively connected to the inner slot one 3-301-1 and the slot inner two 3- 301-2 connection; welding end part one 3-303-1 and welding end part two 3-303-2 are located outside the other axial end of stator core 20, welding end part one 3-303-1 and slot inside one 3 -301-1 connection, welding end part 2 3-303-2 is connected with slot inner part 2 3-301-2, welding end part 1 3-303-1 and welding end part 2 3-303-2 along the stator core 20 The predetermined groove pitch Y/2 is extended in the circumferential direction. In this embodiment, Y is the whole pitch, and the whole pitch is preferably 6, and the welding end part 1 3-303-1 and the welding end part 2 3-303 -2 The extension direction is opposite and close; the welding end-3-303-1 and the inner slot-3-301-1 are located in one of the two radially adjacent layers of the stator core 20, such as the fourth layer, the welding end The second part 3-303-2 and the inner part 2 3-301-2 of the slot are located on another layer, such as the fifth layer, that is, the 72 conductors 230 of the second coil group 130 are located on the fourth layer, the first layer in the radial inner side of the stator core 20 . 48 slots in five layers.

As shown in FIG. 8 , the coil set 4 140 includes a plurality of conductors 4 240 . In this embodiment, the coil set 4 140 includes 36 conductors 4 240 . As shown in FIG. 8 , the conductors 4 240 include welded end portions 5 connected in sequence. 4-303-1, inside the slot five 4-301-1, inserting wire end 4-302, inside the slot six 4-301-2, welding end six 4-303-2, constitute the U-shaped conductor four 240, slot The inner five 4-301-1 and the inner six 4-301-2 of the slot are located in the two slots 21 of the same layer in the radial direction of the stator core 20 and separated by a predetermined slot pitch. In this embodiment, the inner slot 4-301-1 The six 4-301-2 in the slot and the sixth layer in the radial direction of the stator iron core 20 are both located on the sixth layer. Pitch, the short pitch is preferably 6; the plug wire end 4-302 is located outside the axial end of the stator core 20, and the plug wire end 4-302 is connected to the inner part of the slot 4-301-1 and the inner part of the slot respectively. Six 4-301-2 connection; welding end five 4-303-1 and welding end six 4-303-2 are located outside the other axial end of stator core 20, welding end five 4-303-1 and slot Internal five 4-301-1 connection, welding end six 4-303-2 connected with groove internal six 4-301-2, welding end five 4-303-1 along with welding end six 4-303-2 The stator core 20 extends in the circumferential direction with a predetermined slot pitch Y/2. In this embodiment, Y is a full pitch, and the full pitch is preferably 6. The welding end portion 54-303-1 and the welding end portion 64 -303-2 extends in the same direction, and welding end part five 4-303-1 and welding end part six 4-303-2 extend in opposite directions, that is, the welding end part in coil group three 110 and coil group four 140 The welding ends in the stator core 20 extend in opposite directions in the circumferential direction; the welding ends five 4-303-1 and the welding ends six 4-303-2 are connected with the inner slot five 4-301-1 and the inner slot six 4-4- 301 - 2 is located in the same layer, such as the sixth layer, that is, the 36 conductors four 240 of the coil group four 140 are located in the 72 slots of the sixth layer in the radial inner side of the stator core 20 .

Embodiment 4

The stator winding 10 includes coil group three 110, at least one coil group one 120, at least one coil group two 130, and coil group four 140, which are sequentially sleeved from the inside to the outside;

The third coil group 110 is located on the first layer in the radial inner side of the stator iron core 20 , and may also be located in the first layer radially outside the stator iron core 20 . In this embodiment, the third coil group 110 is located in the first layer in the radial direction inner side of the stator iron core 20 . Layers, coil group one 120 is located on the second and third layers radially inside the stator core 20 , coil group two 130 is located on the fourth and fifth layers radially of the stator iron core 20 , coil group four 140 is located on the stator iron core 20 Radial sixth layer;

As shown in FIG. 5 , the coil set 3 110 includes a plurality of conductors 3 210 . In this embodiment, there are 36 conductors 3 210 . The conductors 3 210 include welding end portions 3 1-303-1 and inner slots 3 1-301 connected in sequence. -1. The plug-in end 1-302, the inner slot 4 1-301-2, the welding end 4 1-303-2, constitute the U-shaped conductor 3 210, wherein the inner slot 1-301-1 and the inner slot 4 1-303-2 The four 1-301-2 are respectively located in the two slots 21 of the same layer in the radial direction of the stator core 20, which are separated by a predetermined slot pitch. The pitch between them is X, X is a short pitch, and the short pitch is preferably 5; The ends are respectively connected with the inner three 1-301-1 of the slot and the inner four 1-301-2 of the slot; 1-303-1 of the welding end part 3 is connected with the inner part 3 1-301-1 of the groove; Both -1 and the welding end portion 4 1-303-2 extend along the circumferential direction of the stator core 20 by a predetermined slot pitch Y/2. In this embodiment, Y is a full pitch, and the full pitch is preferably 6. The extension directions of the end part 3 1-303-1 and the welding end part 4 1-303-2 both extend in the same direction in the circumferential direction of the stator core 20; the welding end part 3 1-303-1 and the welding end part 4 1-303- 2 are located on the same layer as the inner slot 3 1-301-1 and the slot inner 4 1-301-2, that is, the 36 conductors 3 210 of the coil group 3 110 are located in the 72 conductors of the first layer in the radial inner side of the stator core 20 in the slot.

As shown in FIG. 6 , the coil group 1 120 includes a plurality of conductors 220. In this embodiment, the coil group 1 120 includes 72 conductors 220. As shown in FIG. 303-1, the inner part of the slot 1 2-301-1, the plug end part 2-302, the inner part of the slot 2-301-2, the welding end part 2 2-303-2, forming the U-shaped conductor 220, the inner part of the slot 2-2 -301-1 and the inner slot 2-301-2 are located in the two slots 21 of the stator core 20 which are radially adjacent to each other and separated by a predetermined slot pitch. In this embodiment, the inner slot 2-301-1 and the The inner two 2-301-2 of the slot are respectively located on the second layer and the third layer in the radial direction of the stator core 20, and the interval between the inner one 2-301-1 of the slot and the inner second 2-301-2 of the slot is Y , Y is the whole pitch, and the whole pitch is preferably 6; the plug wire end 2-302 is located outside the axial end of the stator core 20, and the plug wire end 2-302 is respectively connected to the inner slot 2-301- 1 is connected to the inner part of the slot 2-301-2; the welding end part 1 2-303-1 and the welding end part 2 2-303-2 are located outside the other axial end of the stator core 20, and the welding end part 1 2-303 -1 is connected to the inner groove one 2-301-1, the welding end part 2 2-303-2 is connected to the groove inner part 2 2-301-2, the welding end part 1 2-303-1 is connected to the welding end part 2 2-303 -2 extends along the circumferential direction of the stator core 20 with a predetermined slot pitch Y/2, in this embodiment, Y is a full pitch, and the full pitch is preferably 6, and the welding end portion one 2-303-1 and the The welding end part 2 2-303-2 extends in the opposite direction and is far away; the welding end part 1 2-303-1 and the inside of the slot 2-301-1 are located in one of the two adjacent layers of the stator core 20, such as the second layer, the welding end part two 2-303-2 and the groove inner part two 2-301-2 are located in another layer, such as the third layer, that is, the 72 conductors 220 of the coil group one 120 are located in the radial inner side of the stator core 20. In the 72 slots of the second and third layers.

As shown in FIGS. 15 , 16 and 18 , the second coil group 130 includes a plurality of conductor groups 230 ′. In this embodiment, there are 36 conductor groups 230 ′. The conductor group 230 ′ includes conductor one 230A and conductor two 230B, and conductor one 230A. Located outside the conductor two 230B, the conductor one 230A surrounds the conductor two 230B, and the conductor one 230A and the conductor two 230B have similar structures and are arranged coaxially.

As shown in FIG. 15 , the conductor one 230A includes the welding end part one 3A-303-1, the inner groove part 3A-301-1, the plug wire end part 3A-302, the inner groove part 3A-301-2, the welding end part 3A-301-2, The end part 2 3A-303-2 constitutes a U-shaped conductor 1 230A, and the inner slot 3A-301-1 and the inner slot 2 3A-301-2 are located at two radially adjacent layers of the stator core 20 separated by a predetermined slot pitch. In the first slot 21, in this embodiment, the inner slot one 3A-301-1 and the slot inner two 3A-301-2 are respectively located on the fourth and fifth layers in the radial direction of the stator core 20, and the slot inner one 3A The distance between -301-1 and the inner two 3A-301-2 of the slot is Z, Z is a long pitch, and the long pitch is preferably 7; Outside of one end, the plug-in end 3A-302 is respectively connected with the inner slot 1 3A-301-1 and the inner slot 2 3A-301-2; the welding end 1 3A-303-1 and the welding end 2 3A-303- 2 is located outside the other end of the stator core 20 in the axial direction, the welding end part 1 3A-303-1 is connected with the inner slot 3A-301-1, the welding end part 2 3A-303-2 is connected with the inner slot 3A-301-1 2 Connection, welding end part 1 3A-303-1 and welding end part 2 3A-303-2 extend along the circumferential direction of stator core 20 with a predetermined slot pitch Y/2, in this embodiment, Y is the whole pitch , the whole pitch is preferably 6, and the welding end part one 3A-303-1 and the welding end part two 3A-303-2 extend in opposite and close directions; the welding end part one 3A-303-1 and the inner groove one 3A- 301-1 is located on one of the two adjacent layers of the stator core 20, such as the fourth layer, and the welding end part 2 3A-303-2 and the groove inner part 2 3A-301-2 are located on the other layer, such as the fifth layer.

As shown in FIG. 16 , the second conductor 230B includes a welding end part 1 3B-303-1, a groove inner part 3B-301-1, a plug wire end part 3B-302, a groove inner part 3B-301-2, a welding end part 3B-301-2, a welding end part 2 3B-301-2, The second end 3B-303-2 constitutes the second U-shaped conductor 230B, and the inner slot 1 3B-301-1 and the inner slot 2 3B-301-2 are located at two radially adjacent layers of the stator core 20 separated by a predetermined slot pitch. In the first slot 21, in this embodiment, the inner slot one 3B-301-1 and the slot inner two 3B-301-2 are respectively located on the fourth and fifth layers in the radial direction of the stator core 20, and the slot inner one 3B The distance between -301-1 and the inner part 3B-301-2 of the slot is X, X is a short pitch, and the short pitch is preferably 5; Outside of one end, the plug-in end 3B-302 is respectively connected with the inner slot 1 3B-301-1 and the inner slot 2 3B-301-2; the welding end 1 3B-303-1 and the welding end 2 3B-303- 2 is located outside the other end of the stator core 20 in the axial direction, the welding end part 1 3B-303-1 is connected with the inner slot 3B-301-1, and the welding end part 2 3B-303-2 is connected with the inner slot 2 3B-301- 2 Connection, welding end part one 3B-303-1 and welding end part two 3B-303-2 extend along the circumferential direction of stator core 20 with a predetermined slot pitch Y/2, in this embodiment, Y is the whole pitch , the whole pitch is 6, and the welding end part one 3B-303-1 and the welding end part two 3B-303-2 extend in opposite and close directions; the welding end part one 3B-303-1 and the inner groove one 3B-301 -1 is located in one of the two adjacent layers of the stator core 20, such as the fourth layer, and the welding end part 2 3B-303-2 and the groove inner part 2 3B-301-2 are located in another layer, such as the fifth layer.

As shown in FIG. 18 , the conductor one 230A surrounds the conductor two 230B. In this embodiment, the inner slot 3A-301-1 and the slot inner 2 3A-301-2 of the conductor one 230A are located in the first slot of the stator core 20 respectively. , the eighth slot, the inner slot 3B-301-1 of the conductor two 230B and the inner slot 3B-301-2 of the slot 2 are respectively located in the second slot and the seventh slot of the stator core 20, as shown in Figure 18, that is, the conductor one 230A Surrounding the second conductor 230B, the 36 conductor groups 230 ′ of the first coil group are located in the 72 slots of the fourth layer and the fifth layer in the radial inner side of the stator core 20 .

As shown in FIG. 8 , the coil group 4 140 includes a plurality of conductors 4 240 . In this embodiment, the coil group 4 140 includes 36 conductors 4 4-303-1, inside the slot five 4-301-1, inserting wire end 4-302, inside the slot six 4-301-2, welding end six 4-303-2, constitute the U-shaped conductor four 240, slot The inner five 4-301-1 and the inner six 4-301-2 of the slot are located in the two slots 21 of the same layer in the radial direction of the stator core 20 and separated by a predetermined slot pitch. In this embodiment, the inner slot 4-301-1 The six 4-301-2 inside the slot are both located on the sixth layer in the radial direction of the stator core 20. The pitch between the five 4-301-1 in the slot and the six 4-301-2 in the slot is Y, and Y is the integer Pitch, the short pitch is preferably 6; the plug wire end 4-302 is located outside the axial end of the stator core 20, and the plug wire end 4-302 is connected to the inner part of the slot 4-301-1 and the inner part of the slot respectively. Six 4-301-2 connection; welding end five 4-303-1 and welding end six 4-303-2 are located outside the other axial end of stator core 20, welding end five 4-303-1 and slot Internal five 4-301-1 connection, welding end six 4-303-2 connected with groove internal six 4-301-2, welding end five 4-303-1 along with welding end six 4-303-2 The stator core 20 extends in the circumferential direction with a predetermined slot pitch Y/2. In this embodiment, Y is a full pitch, and the full pitch is preferably 6. The welding end portion 54-303-1 and the welding end portion 64 -303-2 extends in the same direction, and welding end part five 4-303-1 and welding end part six 4-303-2 extend in opposite directions, that is, the welding end part in coil group three 110 and coil group four 140 The welding ends in the stator core 20 extend in opposite directions in the circumferential direction; the welding ends five 4-303-1 and the welding ends six 4-303-2 are connected with the inner slot five 4-301-1 and the inner slot six 4-4- 301 - 2 is located in the same layer, such as the sixth layer, that is, the 36 conductors four 240 of the coil group four 140 are located in the 72 slots of the sixth layer in the radial inner side of the stator core 20 .

Embodiment 5

Compared with the first embodiment, the second embodiment, the third embodiment and the fourth embodiment, the structures of the first coil group 120 , the second coil group 130 , and the fourth coil group 140 in this embodiment are the same as those of the first embodiment described above. The structures of the first coil group 120 , the second coil group 130 , and the fourth coil group 140 in the second embodiment, the third embodiment, and the fourth embodiment are all the same, and will not be repeated here. The difference is that, as shown in FIGS. 24 and 25 , the structure of the third coil group 110 is different. In this embodiment, the structure of the third coil group 110 is the same as the above-mentioned first, second, third, and third embodiments. The difference in the structure of the coil group 3 110 of the coil group 3 is that the pitch between the inner slot 3 1-301-1 and the inner slot 4 1-301-2 of the conductor 3 of the coil group 3 110 is different. In this embodiment, The pitch between the inner slot 3 1-301-1 and the inner slot 4 1-301-2 of the conductor 3 of the coil set 3 110 is Z, Z is a long pitch, and the long pitch is preferably 7.

Embodiment 6

Compared with the above-mentioned five embodiments, this embodiment has the same structure of coil group one 120 , coil group two 130 , coil group three 110 and coil group four 140 , the difference is that in this embodiment, coil group one The number of 120 is two, and the number of the second coil group 130 is two.

Due to the above technical solution, there is at least one coil group 1 and at least one coil group 2, the coil group 1 and the coil group 2 are arranged on the stator iron core, and the coil group 1 and the coil group 2 are both arranged adjacent to the stator iron core Two layers, at the same time, the coil group 1 is composed of a plurality of conductors or conductor groups of the same structure, and the coil group 2 is composed of a plurality of conductors or conductor groups of the same structure. Similar to the structure of the conductors or conductor groups of coil group 2, there are few types of conductors used, and the arrangement is simple. The bus bars and bus bars can be eliminated. The welding end of coil group 1 and the welding end of coil group 2 extend direction. On the contrary, coil group 1 and coil group 2 rotate in opposite directions, so that the twisting direction and twisting slot pitch of the welding end extending inside the slot of the same radial layer in the stator core slot are consistent, so that the lead wires between the windings of each phase are realized. The end and the neutral point are arranged in any layer of any groove in the same radial direction, thereby reducing the complexity of the manufacturing process, reducing the production cost and improving the processing efficiency.

The embodiments of the present invention have been described in detail above, but the content is only a preferred embodiment of the present invention, and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present utility model should still belong to the scope of the patent of the present utility model.

Claims (10)

1. A motor stator winding, characterized in that: comprising, at least one coil group one, arranged on two adjacent layers in the radial direction of the stator core; at least one coil group two, arranged on two adjacent layers in the radial direction of the stator core; The third coil group, the third coil group is arranged on the radially inner first layer or the outer first layer of the stator core; The fourth coil group, the fourth coil group is arranged in the first layer of the three radially opposite coil groups in the stator core; Wherein, the overlapping rotation direction of the coil group one is opposite to the overlapping rotation direction of the coil group two. 2 . The motor stator winding according to claim 1 , wherein the coil group 1 and the coil group 2 both comprise a plurality of conductors or a plurality of conductor groups, and a plurality of the conductors or the plurality of the conductors. 3 . The groups are arranged in sequence along the circumferential direction of the stator core, and the winding rotation direction of the multiple conductors or multiple conductor groups of the coil group 1 is the same as that of the multiple conductors or multiple conductor groups of the coil group 2. The direction of rotation of the stack is opposite; Wherein, the conductor set includes a conductor one and a conductor two, and the conductor one is arranged outside the conductor two. 3 . The motor stator winding according to claim 2 , wherein the conductor, the first conductor and the second conductor each comprise a conductor body, a welding end part 1 and a welding end part 2 , and the welding end part 3 . The first and second welding ends are both connected to the conductor body, and the first and second welding ends extend along the circumference of the stator core, and the first and second welding ends are connected to the conductor body. The extending direction of the welding end portion 2 is the opposite direction or the opposite direction; wherein, The conductor body includes a wire insertion end, an inner slot 1 and an inner slot 2. One end of the inner slot 1 and one end of the inner slot 2 are both connected to the wire insertion end, and the inner slot 1 is connected to the slot inner 2. The inner part two of the slot are respectively arranged on two adjacent layers in the radial direction of the stator core, and the span between the inner part 1 of the slot and the inner part 2 of the slot is a full pitch, a long pitch or a short pitch. 4 . The motor stator winding according to claim 3 , wherein the welding end portion 1 of the conductor of the first coil group or the conductor group extends from the welding end portion 1 of the conductor or conductor group 1 of the coil group 2 . The directions are opposite; the sum of the extension spans of the two welded end portions one and the two welded end portions is the full pitch; During the stacking rotation, the wire insertion end of the first coil group and the wire insertion end of the second coil group rotate in opposite directions. 5. The motor stator winding according to claim 4, characterized in that: the span between inner slot one and slot inner two of the conductor is a full pitch; The span between the inner slot 1 of the conductor 1 and the inner slot 2 of the conductor 1 is a long pitch, and the span between the inner slot 1 of the conductor 2 and the inner slot 2 of the conductor 2 is a short pitch; or, the The span between the inner slot 1 of the conductor 1 and the inner slot 2 of the conductor 1 is a short pitch, and the span between the inner slot 1 of the conductor 2 and the inner slot 2 of the conductor 2 is a long pitch. 6. The motor stator winding according to any one of claims 3-5, wherein the coil set 3 comprises a plurality of conductors 3, and the plurality of conductors 3 are arranged in sequence along the circumference of the stator core Arrangement; wherein, the conductor 3 includes a welding end portion 3 and a welding end portion 4, and the welding end portion 3 and the welding end portion 4 both extend along the circumferential direction of the stator core and are welded to each other. The sum of the extension spans of the two welding ends three and the welding end one or the welding end two is the full pitch, or the two welding ends four welded to the welding end The sum of the extension spans of the end part 1 or the welding end part 1 is the whole pitch, and the extension direction of the welding end part 3 and the welding end part 4 is the same; The conductor 3 also includes a slot inner 3 and a slot inner 4, and the slot inner 3 and the slot inner 4 are arranged on the same radial layer of the stator core, and the slot inner 3 and the slot The span between the inner quads is either short pitch or long pitch. 7 . The motor stator winding according to claim 6 , wherein the coil set 4 includes a plurality of conductors 4, and the plurality of conductors 4 are arranged in sequence along the circumference of the stator core; wherein, The conductor 4 includes a welding end portion 5 and a welding end portion 6. Both the welding end portion 5 and the welding end portion 6 extend along the circumferential direction of the stator iron core. The sum of the extension spans of the welding end part 5 and the welding end part 1 or the welding end part 2 is the whole pitch, or the two welding end parts 6 and the welding end part 1 or all of the welded end parts are welded together. The sum of the extension spans of the welding end part 2 is the whole pitch, and the welding end part 5 and the welding end part 6 extend in the same direction; The conductor 4 further includes a slot inner 5 and a slot inner 6, and the slot inner 5 and the slot inner 6 are arranged on the same radial layer of the stator core, and the slot inner 5 and the slot The span between inner sixes is full pitch. 8 . The motor stator winding according to claim 1 , wherein the number of radial layers of the stator iron core is an even number of layers greater than or equal to 6. 9 . 9 . A motor stator, characterized by comprising a stator iron core and the motor stator winding according to any one of claims 1 to 8 , wherein the stator winding is arranged on the stator iron core. 10 . 10. A motor, characterized by comprising the motor stator of claim 9.

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