CN214124964U - Motor stator and motor - Google Patents

Abstract

The utility model provides a motor stator and motor, include: stator windings, each phase winding comprising a first conductor set, a plurality of second conductor sets, a plurality of third conductor sets and a fourth conductor set connected in series; the first conductor group is positioned on the radial Mth layer of the stator core, the fourth conductor group is positioned on the radial first layer of the stator core, and the first conductor group positioned on the radial Mth layer of the stator core and the fourth conductor group positioned on the radial first layer of the stator core are adjacently arranged along the circumferential direction of the stator core; according to the technical scheme of the motor stator in the application embodiment, a bus bar connected in series among the windings of each phase in the related technology is omitted, the first conductor group, the second conductor group, the third conductor group and the fourth conductor group of the windings of each phase can be directly connected, each phase of winding and a neutral point can be arranged in any slot and any layer of the winding, the complexity of the manufacturing process is reduced, the production cost is reduced, the material cost is reduced, and the processing efficiency is improved.

Description

Motor stator and motor

Technical Field

The utility model relates to a motor field particularly, relates to a motor stator and motor.

Background

The stator winding comprises a plurality of hairpin conductors, and a plurality of types of hairpin conductors, including U-shaped conductors and S-shaped conductors, penetrate into a slot of a stator core according to a certain arrangement mode to form a three-phase winding of a required motor;

in the prior art, more than 90% of stator windings are all provided with the number of slots of each pole and each phase being more than or equal to 2, but if the stator windings are connected in series among phases, the twisting directions of the welding ends in the same layer of slots or the distances among the twisting slots are inconsistent, the manufacturing process is complex, the forming is difficult, the production cost is high, and the processing efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a motor stator and motor, the kind of the conductor of adoption is few, and the mode of arranging is simple, can cancel busbar and busbar for the welding tip distortion direction that the inslot portion that is located the same one deck of stator inslot radial extends is unanimous with distortion groove distance, realizes that leading terminal and neutral point between each looks winding set up in any one deck in same radial arbitrary groove, reduces the preparation technology complexity, reduction in production cost, improvement machining efficiency.

In order to achieve the above object, according to an aspect of the present invention, there is provided a motor stator including:

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

the stator winding comprises a plurality of phase windings arranged on a stator core, and each slot is divided into M layers by the number of the slots which can be accommodated in the radial direction of the stator core, wherein M is an even number which is more than or equal to 4;

each phase winding comprises a first conductor set, a plurality of second conductor sets, a plurality of third conductor sets and a fourth conductor set which are connected in series;

the first conductor group is positioned on the radial Mth layer of the stator core, the fourth conductor group is positioned on the radial first layer of the stator core, and the first conductor group positioned on the radial Mth layer of the stator core and the fourth conductor group positioned on the radial first layer of the stator core are adjacently arranged along the circumferential direction of the stator core;

the first conductor set includes: the same first conductor, the fourth conductor set comprising: a fourth large conductor and a fourth small conductor; each conductor of the first conductor group and the fourth conductor group comprises two slot interiors positioned in different slots of the same radial layer of the stator core, a wire inserting end positioned outside the slots and two welding ends positioned outside the slots and having the same extending direction;

the third conductor set includes: the same third conductor and/or different fifth large conductor and fifth small conductor are/is arranged, each conductor of the third conductor group is respectively positioned in the radially adjacent N +1 layer and N +2 layer of the stator core, wherein N is an odd number;

the third conductor group, the first conductor group and the fourth conductor group are located in the same radial direction of the stator core.

Further, the second conductor set of each phase winding includes: a second large conductor, a second conductor and a second small conductor; each conductor of the second conductor set is located in N layers and N +1 layers of the stator core, which are radially adjacent.

Furthermore, a second large conductor of the second conductor group of each phase winding surrounds a second small conductor, the second conductor of one of the second conductor groups in two radially adjacent second conductor groups of each phase winding is positioned on one side of the stator core in the circumferential direction of the stator core of the second large conductor and the second small conductor of the second conductor group, the second conductor group is positioned on the M/2 layer and the M/2-1 layer in the radial direction of the stator core, the second conductor of the other one of the two radially adjacent second conductor groups of the stator core in each phase winding is positioned on the other side of the stator core in the circumferential direction of the second large conductor and the second small conductor of the second conductor group, and the second conductor group is positioned on the M/2+1 layer and the M/2+2 layer in the radial direction of the stator core.

Further, the at least one second conductor set of each phase winding includes: a second large conductor, a second conductor and a second small conductor; each conductor of the second conductor set is located in N layers and N +1 layers of the stator core, which are radially adjacent.

Further, the at least one second conductor set of each phase winding includes: and three identical second conductors, each conductor of the second conductor group being located in radially adjacent N layers and N +1 layers of the stator core, respectively.

Further, the at least one second conductor set of each phase winding includes: two sixth large conductors and one sixth small conductor, each conductor of the second conductor set being located in radially adjacent N layers and N +1 layers of the stator core, respectively.

Further, the at least one second conductor set of each phase winding includes: each conductor of the second conductor group is respectively positioned in N layers and N +1 layers which are radially adjacent to the stator core.

Furthermore, the phase winding is provided with a plurality of connecting and welding ends, the connecting and welding ends are formed by connecting the welding ends of the M-1 layers and the welding ends of the M layers which are adjacent to each other in the same radial direction of the stator core, the pitches of the plurality of connecting and welding ends of the phase winding are the same, and M is an even number.

Furthermore, the phase winding is provided with an extension end connected with the lead wire and an extension end connected with the outgoing wire, and the extension ends of the lead wire and the outgoing wire are positioned on two layers of radial adjacent stator cores; the extending ends of the lead wires are positioned on the radial M-1 layer of the stator core, the extending ends of the outgoing wires are positioned on the radial M layer of the stator core, or the extending ends of the lead wires are positioned on the radial M layer of the stator core, and the extending ends of the outgoing wires are positioned on the radial M-1 layer of the stator core.

Further, each weld end of each conductor set of the phase winding is located outside the first end of the stator core, and each plug end of each conductor set of the phase winding is located outside the second end of the stator core.

According to another aspect of the present invention, there is provided a motor, including the above-mentioned motor stator.

Use the technical scheme of the utility model, a motor stator, include: a stator core having a plurality of slots formed on a radially inner surface thereof and spaced apart at predetermined slot pitches in a circumferential direction of the stator core; the stator winding comprises a plurality of phase windings arranged on a stator core, and each slot is divided into M layers by the number of the slots which can be accommodated in the radial direction of the stator core, wherein M is an even number which is more than or equal to 4; each phase winding comprises a first conductor set, a plurality of second conductor sets, a plurality of third conductor sets and a fourth conductor set which are connected in series; the first conductor group is positioned on the radial Mth layer of the stator core, the fourth conductor group is positioned on the radial first layer of the stator core, and the first conductor group positioned on the radial Mth layer of the stator core and the fourth conductor group positioned on the radial first layer of the stator core are adjacently arranged along the circumferential direction of the stator core; the first conductor set includes: the same first conductor, the fourth conductor set comprising: a fourth large conductor and a fourth small conductor; each conductor of the first conductor group and the fourth conductor group comprises two slot interiors positioned in different slots of the same radial layer of the stator core, a wire inserting end positioned outside the slots and two welding ends positioned outside the slots and having the same extending direction; the third conductor set includes: the same third conductor and/or different fifth large conductor and fifth small conductor are/is arranged, each conductor of the third conductor group is respectively positioned in the radially adjacent N +1 layer and N +2 layer of the stator core, wherein N is an odd number; the third conductor group, the first conductor group and the fourth conductor group are located in the same radial direction of the stator core. The above-mentioned technical scheme of adoption of this application, the kind of the conductor of adoption is few, and the mode of arranging is simple, can cancel busbar and busbar for the welding tip distortion direction that is located the inslot portion extension of stator inslot radial same layer is unanimous with the distortion groove pitch, realizes that lead terminal and neutral point between each phase winding set up in any one layer of same radial arbitrary groove, reduces the preparation technology complexity, reduction in production cost, improvement machining efficiency.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of a motor stator according to a first embodiment of the present invention;

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

fig. 3 is a schematic structural diagram of a conductor of a fourth conductor set according to a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a fourth conductor set in the tenth embodiment of the present invention;

fig. 5 is a schematic structural diagram of a conductor of a first conductor set according to a first embodiment of the present invention;

fig. 6 is a schematic structural view of a long full-pitch conductor according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a short-pitch conductor according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a long-pitch conductor according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a second conductor set according to a second embodiment of the present invention;

fig. 10 is a schematic structural diagram of a second conductor set in an eleventh embodiment of the present invention;

fig. 11 is a schematic structural diagram of a second conductor set according to a first embodiment of the present invention;

fig. 12 is a schematic structural diagram of a third conductor set according to a first embodiment of the present invention;

fig. 13 is a schematic structural diagram of a third conductor set according to a fourth embodiment of the present invention;

fig. 14 is a schematic structural diagram of a second conductor set according to a seventh embodiment of the present invention;

fig. 15 is a schematic structural diagram of a third conductor set in a twelfth embodiment of the present invention;

fig. 16 is a schematic plane development view of a middle phase winding according to an embodiment of the present invention;

fig. 17 is a schematic plane development view of a phase winding in the second embodiment of the present invention;

fig. 18 is a schematic plane development view of a phase winding in the third embodiment of the present invention;

fig. 19 is a schematic plane development view of the plug end in the phase winding in the fourth embodiment of the present invention;

fig. 20 is a schematic plane development view of the plug end in the five-phase winding according to the embodiment of the present invention;

fig. 21 is a schematic plane development view of a plug end in a six-phase winding according to an embodiment of the present invention;

fig. 22 is a schematic plane development view of a plug end in a seven-phase winding according to an embodiment of the present invention;

fig. 23 is a schematic plane development view of the plug end in the eight phase winding according to the embodiment of the present invention;

fig. 24 is a schematic plane development view of a plug end in a phase winding in the ninth embodiment of the present invention;

fig. 25 is a schematic plan view of a welding side in phase windings of one to nine phases according to an embodiment of the present invention;

fig. 26 is a schematic diagram illustrating a connection principle of windings of each phase according to an embodiment of the present invention;

fig. 27 is a schematic diagram of another connection principle of the windings of the phases in the embodiment of the present invention;

Detailed Description

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

It should be noted that the terms "first", "second", and the like in the description and claims of the present invention and the accompanying drawings are used for distinguishing different objects, and are not intended to limit a specific order. The embodiments of the present invention can be implemented individually, and can be implemented by combining each other between the embodiments, and the embodiments of the present invention are not limited to this.

The utility model provides a motor stator. In fig. 1, the extending direction of A1a2 is parallel to the axial direction of the stator core, and the pitch in the present application is the interval between two slot inner parts 301 of the same conductor along the circumferential direction, or the pitch is the sum of the span between the slot inner parts 301 corresponding to one welding end of one conductor and the span between the slot inner parts 301 corresponding to one welding end of the other conductor; it should be noted that the first layer of the radial inner layer of the stator core in the present application may be the first layer of the inner layer in the direction away from the central axis of the stator core, and may also be the first layer of the inner layer in the direction close to the central axis of the stator core.

As shown in fig. 1, an embodiment of the present invention provides a motor stator, including: a stator core 20 having a plurality of slots 21 formed on a radially inner surface thereof and spaced apart at predetermined slot pitches in a circumferential direction of the stator core;

as shown in fig. 1 to 2, 16 to 25, the stator winding 10, which includes a plurality of phase windings mounted on the stator core 20 so as to be different from each other in electrical phase and form an even number of layers in the radial direction of the stator core 20, forms 4 layers in the radial direction of the stator core for the phase windings (U-phase winding or V-phase winding or W-phase winding) in the present embodiment; the even number layers may be four, six, eight, or more even number layers. The motor stator in the embodiment is a motor stator in the hair pin motor.

Referring to fig. 16 to 25, in the stator winding 10 in the first to twelfth embodiments of the present embodiment, the stator winding 10 is mounted on the stator core 20, that is, a plurality of phase windings mounted on the stator core 20 so as to be different from each other in electrical phase, wherein the stator winding 10 is a three-phase (i.e., U-phase winding, V-phase winding, W-phase winding) winding, and each phase slot of each pole is equal to or equal to 3; three slots 21 are provided for each magnetic pole of the rotor, the number of slots per pole per phase being 3 in the present embodiment, the rotor has six magnetic poles and is such that the number of slots 21 provided in the stator core 20 is equal to 54 (i.e., 3X6X3) for each phase of the three-phase stator winding 10, and in the present embodiment, each phase winding (U-phase winding, V-phase winding, W-phase winding) includes 1 first conductor group, 4 second conductor groups, 2 third conductor groups, 1 fourth conductor group connected in series;

further, in the present embodiment, the stator core 20 is formed by stacking a plurality of annular magnetic steel plates to form the stator core axial direction both end faces 25, 26 of the stator core 20 by defining one tooth portion 22 by two adjacent slots 21, and other conventional metal plates may be used instead of the magnetic steel plates.

As shown in fig. 16 to 25, in an embodiment, the first conductor set includes: three identical first conductors 150, each first conductor 150 includes two slot interiors 301 located inside different slots of the same radial layer of the stator core, a wire insertion end 302 located outside the slot 21, the wire insertion end 302 located outside the axial 25 end of the slot 21 and connected to the two slot interiors 301 of the conductor, two welding ends 303 located outside the slot and extending in the same direction (both to the left), the two welding ends 303 located outside the axial 26 end of the slot 21 and connected to the two slot interiors 301 of the conductor in the same layer, and the two slot interiors of the first conductors are located on the fourth layer of the innermost radial layer of the stator core; the fourth conductor set includes: each of the two fourth large conductors 100A and the fourth small conductor 100B of the fourth conductor group includes two slot interiors 301 located inside different slots of the same radial layer of the stator core, a wire insertion end 302 located outside the slot 21, the wire insertion end 302 located at the 25 axial outside end of the slot 21 and connected to the two slot interiors 301 of the conductors, two welding ends 303 located outside the slot and extending in the same direction (both right), the two welding ends 303 located at the 26 axial outside end of the slot 21 and connected to the two slot interiors 301 of the conductors in the same layer, and the two slot interiors of each conductor of the fourth conductor group is located at the first layer of the innermost radial layer of the stator core; the two slot interiors of the first conductor 150 of the first conductor set are located in the stator core slots 28, 37, the two slot interiors of the second first conductor 150 of the first conductor set are located in the stator core slots 29, 38, the two slot interiors of the third first conductor 150 of the first conductor set are located in the stator core slots 30, 39, and the two slot interiors of the three first conductors 150 of the first conductor set are sequentially located in three circumferentially adjacent slots of the fourth layer of the stator core. The two slot interiors of the first fourth large conductor 100A of the fourth conductor group are located in the stator core slots 19, 29, the two slot interiors of the second fourth large conductor 100A of the fourth conductor group are located in the stator core slots 20, 30, the two slot interiors of the fourth small conductor 100B of the fourth conductor group are located in the stator core slots 21, 28, and the two slot interiors of the two fourth large conductors 100A of the fourth conductor group surround the two slot interiors of the fourth small conductor 100B in the first layer in the stator core circumferential direction. Referring to fig. 15, the first conductor set of the stator core slots 28, 29, and 30 located on the fourth radial layer of the stator core is disposed along the right side of the stator core circumferential direction, and the fourth conductor set of the stator core slots 28, 29, and 30 located on the first radial layer of the stator core is disposed along the left side of the stator core circumferential direction, that is, the first conductor set of the fourth radial layer of the stator core and the fourth conductor set of the first radial layer of the stator core are disposed adjacent to each other along the stator core circumferential direction.

As shown in fig. 16 to 25, in the first embodiment, the third embodiment, the fourth embodiment, the sixth embodiment, the seventh embodiment, and the ninth embodiment, the third conductor set includes: each of the fifth large conductor 200-1A and the fifth small conductor 200-1B of the third conductor group comprises two slot interiors 301 located inside two radially adjacent layers of different slots of the stator core, a wire inserting end 302 located outside the slot 21 and connected with the two slot interiors 301 of the conductor at an axially outer 25 end of the slot 21, two welding ends 303 located outside the slot and extending in opposite directions (the extending directions of the two welding ends are opposite), the two welding ends 303 located outside the slot 21 and connected with the two slot interiors 301 of the conductor at the axially outer 26 end in the same layer, and the two slot interiors of each conductor of the third conductor group are located at a radially adjacent layer 2 and a radially adjacent layer 3 of the stator core; the two slot interiors of the first fifth large conductor 200A of the third conductor set are located in the stator core slots 19, 29, the two slot interiors of the second fifth large conductor 200-1A are located in the stator core slots 20, 30, the two slot interiors of the fifth small conductor 200-1B are located in the stator core slots 21, 28, the two slot interiors of the first fifth large conductor 200-1A of the second third conductor set are located in the stator core slots 28, 38, the two slot interiors of the second fifth large conductor 200A are located in the stator core slots 29, 39, the two slot interiors of the fifth small conductor 200-1B are located in the stator core slots 30, 37, the first third conductor set is located in the stator core circumferential direction slots 19, 20, 21 and the core slots 28, 29, 30, and the fourth conductor set is located in the same radial direction as the stator core circumferential direction slots 19, 20, 21 and the core slots 28, 29, 30, the second third conductor set is located in the stator core circumferential core slots 28, 29, 30 and the core slots 37, 38, 39 and the first conductor set is located in the stator core circumferential core slots 28, 29, 30 and the core slots 37, 38, 39 in the same radial direction. According to the technical scheme of the motor stator in the embodiment, a bus bar connected in series among the windings of each phase in the related technology is omitted, the first conductor group, the second conductor group, the third conductor group and the fourth conductor group of each phase can be directly connected, each phase of winding and a neutral point can be arranged in any slot and any layer of winding, the complexity of the manufacturing process is reduced, the production cost is reduced, the material cost is reduced, and the processing efficiency is improved. Therefore, the technical scheme of the embodiment of the application effectively solves the problems of complex manufacturing process, high production cost and low processing efficiency of the hairpin winding in the related technology.

As shown in fig. 15, in embodiment eleven, the third conductor set includes: each of the fifth large conductor 200-2A and the fifth small conductor 200-2B of the third conductor group comprises two slot interiors 301 located inside two radially adjacent layers of different slots of the stator core, a wire inserting end 302 located outside the slot 21 and connected with the two slot interiors 301 of the conductor at an axially outer 25 end of the slot 21, two welding ends 303 located outside the slot and extending in opposite directions (the extending directions of the two welding ends are opposite), the two welding ends 303 located outside the slot 21 and connected with the two slot interiors 301 of the conductor at the same layer, and the two slot interiors of each conductor of the third conductor group are located at a2 nd layer and a 3 rd layer radially adjacent to the stator core; the two slot interiors of the fifth large conductor 200-2A of the third conductor set are positioned in the stator core slots 19, 30, the two slot interiors of the first fifth small conductor 200-2B are positioned in the stator core slots 20, 28, the two slot interiors of the second fifth small conductor 200-2B are positioned in the stator core slots 21, 29, the two slot interiors of the fifth large conductor 200-2A of the second third conductor set are positioned in the stator core slots 28, 39, the two slot interiors of the first fifth small conductor 200-2B are positioned in the stator core slots 29, 37, the two slot interiors of the second fifth small conductor 200-2B are positioned in the stator core slots 30, 38, the first third conductor set is positioned in the stator core circumferential core slots 19, 20, 21 and the core slots 28, 29, 30 and the fourth conductor set is positioned in the stator core circumferential core slots 19, 20, 21 and the core slots 28, 29, 30 are located in the same radial direction, the second third conductor set is located in the stator core circumferential core slots 28, 29, 30 and the core slots 37, 38, 39 and the first conductor set is located in the stator core circumferential core slots 28, 29, 30 and the core slots 37, 38, 39 are located in the same radial direction. According to the technical scheme of the motor stator in the embodiment, a bus bar connected in series among the windings of each phase in the related technology is omitted, the first conductor group, the second conductor group, the third conductor group and the fourth conductor group of each phase can be directly connected, each phase of winding and a neutral point can be arranged in any slot and any layer of winding, the complexity of the manufacturing process is reduced, the production cost is reduced, the material cost is reduced, and the processing efficiency is improved. Therefore, the technical scheme of the embodiment of the application effectively solves the problems of complex manufacturing process, high production cost and low processing efficiency of the hairpin winding in the related technology.

As shown in fig. 16 to 25, in the second embodiment, the third embodiment, the fifth embodiment, the sixth embodiment, the eighth embodiment and the ninth embodiment, the third conductor set includes: the same third conductor 250, each of the third conductors 250 of the second conductor group comprises two slot interiors 301 located inside two layers of different slots radially adjacent to the stator core, a wire inserting end 302 located outside the slot 21 and axially outside 25 ends of the slot 21 and connected with the two slot interiors 301 of the conductors, two welding ends 303 located outside the slot and extending in opposite directions (the extending directions of the two welding ends are opposite), the two welding ends 303 located at the axially outside 26 ends of the slot 21 and connected with the two slot interiors 301 of the conductors in the same layer, and the two slot interiors of each of the conductors of the third conductor group are located at the 2 nd layer and the 3 rd layer radially adjacent to the stator core; the two slot interiors of the first third conductor 250 of the third conductor set are located in the stator core slots 19, 28, the two slot interiors of the second third conductor 250 are located in the stator core slots 20, 29, the two slot interiors of the third conductor 250 are located in the stator core slots 21, 30, the two slot interiors of the first third conductor 250 of the second third conductor set are located in the stator core slots 28, 37, the two slot interiors of the second third conductor 250 are located in the stator core slots 29, 38, the two slot interiors of the third conductor 250 are located in the stator core slots 30, 39, the first third conductor set is located in the stator core circumferential core slots 19, 20, 21 and the core slots 28, 29, 30 and the fourth conductor set is located in the stator core circumferential core slots 19, 20, 21 and the core slots 28, 29, 30 are located in the same radial direction, and the second third conductor set is located in the stator core circumferential core slots 28, 29, 30 and core slots 37, 38, 39 are located in the same radial direction as the first conductor set in the stator core circumferential direction the core slots 28, 29, 30 and core slots 37, 38, 39 are located. According to the technical scheme of the motor stator in the embodiment, a bus bar connected in series among the windings of each phase in the related technology is omitted, the first conductor group, the second conductor group, the third conductor group and the fourth conductor group of each phase can be directly connected, each phase of winding and a neutral point can be arranged in any slot and any layer of winding, the complexity of the manufacturing process is reduced, the production cost is reduced, the material cost is reduced, and the processing efficiency is improved. Therefore, the technical scheme of the embodiment of the application effectively solves the problems of complex manufacturing process, high production cost and low processing efficiency of the hairpin winding in the related technology.

With reference to fig. 16 to 18, in the first to third embodiments, each phase winding includes 8 second conductor groups 300, each second conductor group includes one second large conductor 3001-a, one second conductor 3001 and one second small conductor 3001-B, two slot interiors of the second large conductor 3001-a are located in the 3 rd layer 2 nd slot and the 4 th layer 12 th slot in the radial direction of the stator core, two slot interiors of the second conductor 3001 are located in the 1 st slot and the 4 th layer 10 th slot in the radial direction of the stator core, and two slot interiors of the second small conductor 3001-B are located in the 3 rd layer 3 rd slot and the 4 th layer 11 th slot in the radial direction of the stator core; each conductor (3001-A, 3001-B) of the second conductor set is located in 3 and 4 radially adjacent layers of the stator core, respectively; each conductor (3001-a, 3001-B) of the other second conductor set of the phase winding is located in 1 and 2 radially adjacent layers of the stator core, respectively.

With reference to fig. 16 to 18, in the first to third embodiments, one second large conductor 3001-a of the second conductor group 300 of each phase winding surrounds one second small conductor 3001-B, one second conductor group 300 (the second conductor 3001 located at the 1 st (M/2-1) and 2 nd (M/2) layers in the radial direction of the stator core) of the two second conductor groups 300 adjacent to the stator core in each phase winding is located at the 1 st slot and the 10 th slot of the stator core, the second large conductor and the second small conductor of the second conductor group are located at the 2 nd slot and the 12 th slot of the stator core, that is, the second conductor 3001 located at the 1 st and the 2 nd layers in the radial direction of the stator core is located at one circumferential side of the second large conductor and the second small conductor of the second conductor group 300, and one second conductor group 300 (located at the 3 rd (M/2+1) layer in the radial direction of the stator core) of the two second conductor groups 300 adjacent to the stator core in each phase winding is located at one circumferential side of the second conductor groups 300 adjacent to the radial direction of the stator core, The second conductor 3001 of the 4 th layer (M/2+2) is located in the 3 rd slot and the 12 th slot of the stator core, and the second large conductor and the second small conductor of the second conductor group are located in the 1 st slot and the 11 th slot of the stator core, that is, the second conductor 3001 of the 3 rd layer and the 4 th layer in the radial direction of the stator core is located on the other circumferential side of the second large conductor and the second small conductor of the second conductor group 300.

With reference to fig. 19 to 24, in fourth to ninth embodiments, each phase winding includes 4 second conductor sets 300, each second conductor set 300 includes one second large conductor 3001-a, one second conductor 3001 and one second small conductor 3001-B, two slot interiors of the second large conductor 3001-a are located in the 1 st layer 2 nd slot and the 2 nd layer 12 th slot in the radial direction of the stator core, two slot interiors of the second conductor 3001 are located in the 1 st layer 1 st slot and the 2 nd layer 10 th slot in the radial direction of the stator core, and two slot interiors of the second small conductor 3001-B are located in the 1 st layer 3 rd slot and the 2 nd layer 11 th slot in the radial direction of the stator core; each conductor (3001-a, 3001-B) of the second conductor set is located in 1 and 2 radially adjacent layers of the stator core, respectively.

Further, with reference to fig. 19 to 21, in the fourth to sixth embodiments, each phase winding further includes 4 second conductor groups 350, each second conductor group 350 includes three identical second conductors 3001, two slot interiors of a first second conductor 3001 of each second conductor group are located in a1 st slot and a 4 th 10 th slot of a radial 3 rd layer of the stator core, two slot interiors of a second conductor 3001 are located in a2 nd slot and a 4 th 11 th slot of a radial 3 rd layer of the stator core, and two slot interiors of a third second conductor 3001 are located in a 3 rd slot and a 4 th 12 th slot of a radial 3 rd layer of the stator core; each conductor (3001) of the second conductor set is located in radially adjacent 3 and 4 layers, respectively, of the stator core.

Optionally, with reference to fig. 22 to 24, in embodiments seven to nine, each phase winding further includes 4 second conductor sets 380, the second conductor sets 380 include two sixth large conductors and one sixth small conductor, two slot interiors of the first sixth large conductor 3001-a of the second conductor sets are located at the 1 st slot and the 4 th slot of the radial 3 rd layer of the stator core, two slot interiors of the second sixth large conductor 3001-a are located at the 2 nd slot and the 4 th slot of the radial 3 rd layer of the stator core, and two slot interiors of the sixth small conductor 3001-B are located at the 3 rd slot and the 4 th slot of the radial 3 rd layer of the stator core; each conductor (3001-a, 3001-B) of the second conductor set is located in 3 and 4 radially adjacent layers of the stator core, respectively.

Optionally, in combination with fig. 15, in an embodiment twelfth, each phase winding further includes 4 second conductor sets 380, where the second conductor set 390 includes one seventh large conductor and two seventh small conductors, two slots of one seventh large conductor 3001-a of the second conductor set are located at the 1 st slot and the 4 th slot of the radial 3 rd layer of the stator core, two slots of the first seventh small conductor 3001-B are located at the 2 nd slot and the 4 th slot of the radial 3 rd layer of the stator core, and two slots of the second seventh small conductor 3001-B are located at the 3 rd slot and the 4 th slot of the radial 3 th layer of the stator core; each conductor (3001-a, 3001-B) of the second conductor set is located in 3 and 4 radially adjacent layers of the stator core, respectively.

Optionally, in combination with fig. 4, in an embodiment ten, the fourth conductor set includes: each of the four large conductors 100-2A and the two small conductors 100-2B of the fourth conductor group includes two slot interiors 301 located inside different slots of the same radial layer of the stator core, a wire insertion end 302 located outside the slot 21, the wire insertion end 302 located at the 25 axial outside end of the slot 21 and connected to the two slot interiors 301 of the conductor, two welding ends 303 located outside the slot and extending in the same direction (both right), the two welding ends 303 located at the 26 axial outside end of the slot 21 and connected to the two slot interiors 301 of the conductor in the same layer, and the two slot interiors of each of the conductors of the fourth conductor group are located at the first layer of the radially innermost layer of the stator core; the difference between the embodiment ten and the fourth conductor set in the embodiment one is only that the number and the pitch of the conductors are different, and the fourth conductor set in the embodiment ten is the same as the fourth conductor set in the embodiments one to nine in the positions of the stator core slots, and further description is not repeated here.

Referring to fig. 25, each phase winding has 35 connecting and welding terminals, 17 connecting and welding terminals are formed by connecting and welding terminals of a first layer and a second layer of a stator core, 17 connecting and welding terminals are formed by connecting and welding terminals of a third layer and a fourth layer of a stator core, the first connecting and welding terminal is formed by connecting and welding a welding terminal of a conductor of a second conductor group located inside a slot of a1 st slot of the 4 th layer and a welding terminal of a conductor of another second conductor group located inside a slot of a 10 th slot of the 3 rd layer in the same radial direction of the stator core, specifically, the first connecting and welding terminal is formed by connecting and welding terminals of a fourth layer and the third layer of the stator core, a pitch between two corresponding to two slot inner portions of the first connecting and welding terminal is a full pitch 9, and the second connecting and welding terminal is connected and another slot inner portion of a conductor of a second conductor group located inside a slot of a1 st slot of the 2 nd layer And a welding end of one conductor of one second conductor group, which is positioned in the groove interior of the 10 th groove of the 1 st layer and connected with the first layer, is formed by connecting the second layer of the stator core in the same radial direction, the pitch between the two groove interiors corresponding to the two welding ends connected by the second connecting welding end is the whole pitch 9, and correspondingly, the connection mode of the other 33 connecting welding ends is similar to that of the first and second connecting welding ends, and further description is omitted here.

Referring to fig. 25, in the present embodiment, each of the phase windings (U-phase winding, V-phase winding, W-phase winding) further has an extended end connected to the lead wire and an extended end connected to the outlet wire, in the first embodiment, the extending ends U1 of the connecting leads are positioned at the radial fourth layer of the axial 26 th end of the stator core, the extended end U2 of the connection outlet of the phase winding is located at the radial third layer of the axial 26 th end of the stator core, namely, the extending end of the lead wire end and the extending end of the outlet wire end of the phase winding are positioned at two layers adjacent to the stator iron core in the radial direction, of course, the extending end U1 of the phase winding connecting lead may also be located in the radial second layer of the 26 th axial end of the stator core, and the extending end U2 of the connecting outgoing line may also be located in the radial first layer of the 26 th axial end of the stator core.

With reference to fig. 1-25, in the present embodiment, each weld end 303 of each conductor set of each phase winding is located outside the first end 26 of the stator core, and each plug end 302 of each conductor set of each phase winding is located outside the second end 25 of the stator core.

Illustratively, the star connection of the series windings of the motor is shown in fig. 26, and the delta connection of the series windings of the motor is shown in fig. 27.

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

The embodiment of the utility model provides a motor includes the motor stator in above-mentioned embodiment, consequently the embodiment of the utility model provides a motor also possesses the beneficial effect that the above-mentioned embodiment described, no longer gives unnecessary details here.

In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; the connection may be mechanical or electrical, may be direct, may be indirect via an intermediate medium (bus connection), or may be communication between the two components. The above-described meaning of what is specifically intended in the present invention can be understood in specific instances by those of ordinary skill in the art. Finally, it should be noted that the above description is only a preferred embodiment of the present invention and the technical principles applied.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (11)

1. An electric machine stator comprising:

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

the stator winding comprises a plurality of phase windings arranged on the stator core, and each slot is divided into M layers by the number of the slots which can be accommodated in the radial direction of the stator core, wherein M is an even number which is more than or equal to 4;

the method is characterized in that: each of the phase windings comprises a first conductor set, a plurality of second conductor sets, a plurality of third conductor sets and a fourth conductor set which are connected in series;

the first conductor group is located on the radial Mth layer of the stator core, the fourth conductor group is located on the radial first layer of the stator core, and the first conductor group located on the radial Mth layer of the stator core and the fourth conductor group located on the radial first layer of the stator core are arranged adjacently along the circumferential direction of the stator core;

the first conductor set includes: the same first conductor, the fourth conductor set comprising: a fourth large conductor and a fourth small conductor; each conductor of the first conductor group and the fourth conductor group comprises two slot interiors positioned in different slots of the same radial layer of the stator core, a wire inserting end positioned outside the slots and two welding ends positioned outside the slots and having the same extending direction;

the third conductor set includes: the same third conductor, and/or different fifth large conductor and fifth small conductor, each conductor of the third conductor group is respectively positioned in the radially adjacent N +1 layer and N +2 layer of the stator core, wherein N is an odd number;

the third conductor group, the first conductor group and the fourth conductor group are located in the same radial direction of the stator core.

2. The electric machine stator of claim 1, wherein the second conductor set of each of the phase windings comprises: a second large conductor, a second conductor and a second small conductor; each conductor of the second conductor group is respectively positioned on N layers and N +1 layers which are radially adjacent to the stator core.

3. The electric machine stator of claim 2, wherein one of the second large conductors of the second conductor set of each of the phase windings surrounds one of the second small conductors, the second conductor of one of the second conductor sets of each of the phase windings located radially adjacent to the stator core is located on one circumferential side of the stator core of the second large and second small conductors of the second conductor set and is located on one radial M/2, M/2-1, layer of the stator core, the second conductor of the other of the second conductor sets of each of the phase windings located radially adjacent to the stator core is located on the other circumferential side of the stator core of the second large and second small conductors of the second conductor set and is located on one radial M/2+1, layer of the stator core, M/2+2 layers.

4. The electric machine stator of claim 1, wherein at least one of the second conductor sets of each of the phase windings comprises: a second large conductor, a second conductor and a second small conductor; each conductor of the second conductor set is respectively positioned on N layers and N +1 layers which are radially adjacent to the stator core.

5. The electric machine stator of claim 4, wherein at least one of the second conductor sets of each of the phase windings comprises: three identical second conductors, each conductor of the second conductor set being located in N and N +1 radially adjacent layers of the stator core, respectively.

6. The electric machine stator of claim 4, wherein at least one of the second conductor sets of each of the phase windings comprises: two sixth large conductors and one sixth small conductor, each conductor of the second conductor set being located in radially adjacent N layers and N +1 layers of the stator core, respectively.

7. The electric machine stator of claim 4, wherein at least one of the second conductor sets of each of the phase windings comprises: each conductor of the second conductor group is respectively positioned in N layers and N +1 layers which are radially adjacent to the stator core.

8. The motor stator according to any one of claims 2 or 4, wherein the phase winding has a plurality of connection welding terminals, the connection welding terminals are formed by connecting welding terminals of M-1 layers and welding terminals of M layers which are adjacent to each other in the same radial direction of the stator core, the pitch of the plurality of connection welding terminals of the phase winding is the same, and M is an even number.

9. The electric machine stator of claim 8, wherein the phase windings have extended ends connected to lead wires and extended ends connected to outgoing wires, the extended ends of the lead wires and the extended ends of the outgoing wires being located at two layers radially adjacent to the stator core; the extension end of the lead is located on the radial M-1 layer of the stator core, the extension end of the lead is located on the radial M layer of the stator core, or the extension end of the lead is located on the radial M layer of the stator core, and the extension end of the lead is located on the radial M-1 layer of the stator core.

10. The electric machine stator of any one of claims 2 or 4, wherein each weld end of each conductor set of the phase winding is located outside the first end of the stator core, and each plug end of each conductor set of the phase winding is located outside the second end of the stator core.

11. An electrical machine comprising an electrical machine stator according to any one of claims 1 to 10.

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