CN213585302U - Motor stator and motor - Google Patents

Abstract

The utility model provides a motor stator and a motor, wherein a stator winding comprises a plurality of phase windings arranged on a stator core, and an even number layer is formed on the stator core in the radial direction; each phase winding is formed by connecting a plurality of conductor groups in series along the circumferential direction of the stator core, or each phase winding is formed by connecting a plurality of conductor groups in K parallel branches along the circumferential direction of the stator core, and K is a multiple of 2 of the number of slots of each phase of each pole; the plurality of conductor sets includes: q first conductor groups, a plurality of second conductor groups, a plurality of third conductor groups, and Q fourth conductor groups, Q being an integer of 1 or more; the adopted conductors are few in types and simple in arrangement mode, and bus bars can be omitted, so that the twisting direction of welding end parts extending towards the inside of the same layer of slots in the stator core slot is consistent with the twisting slot pitch, the lead ends and neutral points between windings of each phase are arranged on any layer of any radial slot, the complexity of the manufacturing process is reduced, the production 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 coils, and the hairpin coils penetrate into a slot of a stator core according to a certain arrangement mode to form a single-phase winding or a multi-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 stator core inslot radial same layer extends is unanimous with distortion groove distance, realizes that lead wire end and neutral point between each phase winding set up in any one deck in same radial arbitrary groove, reduces the preparation technology complexity, reduction in production cost improves 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 core slots formed on a radially inner surface thereof and spaced apart at predetermined slot pitches in a circumferential direction of the stator core;

a stator winding including a plurality of phase windings mounted on the stator core and forming an even number of layers in a radial direction of the stator core;

each phase winding is formed by connecting a plurality of conductor groups in series along the circumferential direction of the stator core, or each phase winding is formed by connecting a plurality of conductor groups in K parallel branches along the circumferential direction of the stator core, and K is a multiple of 2 of the number of slots of each phase of each pole;

the plurality of conductor sets includes: q first conductor groups, a plurality of second conductor groups, a plurality of third conductor groups, and Q fourth conductor groups, Q being an integer of 1 or more;

wherein the first conductor set includes: the two first conductors of the first conductor group are positioned in the radially outermost layer of the stator core;

the second conductor set includes: the sixth large conductor and the sixth small conductor, or the second conductor group includes: each conductor of the second conductor group comprises two in-slot parts positioned in different iron core slots, a wire inserting end positioned outside the iron core slots and two welding ends positioned outside the iron core slots and opposite in extension direction, the two in-slot parts of each conductor of the second conductor group are respectively positioned in N layers and N +1 layers which are adjacent to each other in the radial direction of the stator iron core, wherein N is an odd number;

the third conductor set includes: each conductor of the third conductor group comprises two slot interiors positioned in different iron core slots, a wire inserting end positioned outside the iron core slots and two welding ends positioned outside the iron core slots and opposite in extending direction, and the two slot interiors of each conductor of the third conductor group are respectively positioned in the radially adjacent N +1 layer and the N +2 layer of the stator iron core;

the fourth conductor set includes: the four-conductor-group stator core comprises a fourth large conductor and a fourth small conductor, each conductor of the fourth conductor group comprises two inner slots located in different core slots, a wire inserting end located outside the core slots and two welding ends located outside the core slots and having the same extending direction, the extending direction of each welding end of each conductor of the fourth conductor group is opposite to the extending direction of each welding end of each conductor of the first conductor group, and the two inner slots of each conductor of the fourth conductor group are located in the radially innermost layer of the stator core.

Further, the pitch between the two groove interiors of the first conductor group is a full pitch, the pitch between the two groove interiors of the fourth large conductor of the fourth conductor group is a long pitch, and the pitch between the two groove interiors of the fourth small conductor of the fourth conductor group is a short pitch.

Further, the pitch between the two groove interiors of the sixth large conductor of the second conductor group is a long pitch, and the pitch between the two groove interiors of the sixth small conductor of the second conductor group is a short pitch; the two conductors of the third conductor set are identical third conductors having a pitch between the two groove interiors of the full pitch.

Further, the pitch between the two groove interiors of the sixth large conductor of the second conductor group is a long pitch, and the pitch between the two groove interiors of the sixth small conductor of the second conductor group is a short pitch; the two conductors of the third conductor group are a fifth large conductor whose pitch between the two groove interiors is a long pitch, and a fifth small conductor whose pitch between the two groove interiors is a short pitch.

Further, the pitch between the two groove interiors of the sixth large conductor of the second conductor group is a long pitch, and the pitch between the two groove interiors of the sixth small conductor of the second conductor group is a short pitch; two conductors of a third conductor group of the phase winding are a fifth large conductor and a fifth small conductor, the pitch between the two groove interiors of the fifth large conductor is a long pitch, and the pitch between the two groove interiors of the fifth small conductor is a short pitch; the two conductors of the other third conductor set of the phase winding are third conductors whose pitch between the two slot interiors is a full pitch.

Further, the pitch between the two groove interiors of the second conductors of the second conductor group is a full pitch; the two conductors of the third conductor set are identical third conductors having a pitch between the two groove interiors of the full pitch.

Further, the pitch between the two groove interiors of the second conductors of the second conductor group is a full pitch; the two conductors of the third conductor group are a fifth large conductor whose pitch between the two groove interiors is a long pitch, and a fifth small conductor whose pitch between the two groove interiors is a short pitch.

Further, the pitch between the two groove interiors of the second conductors of the second conductor group is a full pitch; two conductors of a third conductor group of the phase winding are a fifth large conductor and a fifth small conductor, the pitch between the two groove interiors of the fifth large conductor is a long pitch, and the pitch between the two groove interiors of the fifth small conductor is a short pitch; the two conductors of the other third conductor set of the phase winding are third conductors whose pitch between the two slot interiors is a full pitch.

Furthermore, the phase winding is provided with a plurality of first connecting welding ends and a plurality of second connecting welding ends which are connected together, the welding ends positioned on the same radially adjacent M-1 layers of the stator core are the first connecting welding ends, the welding ends positioned on the same radially adjacent M layers of the stator core are the second connecting welding ends, the sum of the span of the first connecting welding ends and the span of the second connecting welding ends is 6, and M is an even number.

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

Furthermore, the welding ends of the phase windings except the welding ends connected with the outgoing lines are located outside the second end of the stator core, each welding end of each conductor of each remaining conductor group in the phase windings is located outside the first end of the stator core, and each plug line end of each conductor group of each 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 core slots formed on a radially inner surface thereof and spaced apart at predetermined slot pitches in a circumferential direction of the stator core; a stator winding including a plurality of phase windings mounted on the stator core and forming an even number of layers in a radial direction of the stator core; 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; wherein the first conductor set includes: the two first conductors of the first conductor group are positioned in the radially outermost layer of the stator core; the second conductor set includes: each conductor of the second conductor group comprises two slot interiors positioned in different iron core slots, a wire inserting end positioned outside the iron core slots and two welding ends positioned outside the iron core slots and opposite in extending direction, the two slot interiors of each conductor of the second conductor group are respectively positioned in N layers and N +1 layers which are adjacent to each other in the radial direction of the stator iron core, wherein N is an odd number; the third conductor set includes: each conductor of the third conductor group comprises two slot interiors positioned in different iron core slots, a wire inserting end positioned outside the iron core slots and two welding ends positioned outside the iron core slots and opposite in extending direction, and the two slot interiors of each conductor of the third conductor group are respectively positioned in the radially adjacent N +1 layer and the N +2 layer of the stator iron core; the fourth conductor set includes: the four-conductor-group stator core comprises a fourth large conductor and a fourth small conductor, each conductor of the fourth conductor group comprises two inner slots located in different core slots, a wire inserting end located outside the core slots and two welding ends located outside the core slots and having the same extending direction, the extending direction of each welding end of each conductor of the fourth conductor group is opposite to the extending direction of each welding end of each conductor of the first conductor group, and the two inner slots of each conductor of the fourth conductor group are located in the radially innermost layer of the stator core. The above-mentioned technical scheme of adoption of application, the conductor that adopts is of few kind, and the mode of arranging is simple, can cancel busbar and busbar for the welding tip distortion direction that the inslot that is located stator core inslot radial same layer extends 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 phase winding in a stator winding according to an embodiment of the present invention;

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

fig. 4 is a schematic structural diagram of a fourth conductor set according to a first embodiment of the present invention;

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

fig. 6 is a schematic structural diagram of a third conductor according to a first embodiment of the present invention;

fig. 7 is a schematic structural diagram of a third conductor set according to a second embodiment of the present invention;

fig. 8 is a schematic structural diagram of a second conductor according to a first embodiment of the present invention;

fig. 9 is a schematic diagram of a planar expansion of a plug end of a middle phase winding according to an embodiment of the present invention;

fig. 10 is a schematic diagram of a second phase winding according to the embodiment of the present invention showing a plane expansion of the plug end;

fig. 11 is a schematic diagram of a plane expansion of a plug end of a phase winding in the third embodiment of the present invention;

fig. 12 is a schematic diagram of a plane expansion of a plug end of a phase winding in the fourth embodiment of the present invention;

fig. 13 is a schematic diagram of a plane expansion of the plug end of a five-phase winding according to an embodiment of the present invention;

fig. 14 is a schematic diagram of a plane expansion of a plug end of a phase winding in six embodiments of the present invention;

fig. 15 is a schematic diagram of a planar expansion of a welding wire end of a phase winding according to one embodiment to six embodiments of the present invention;

fig. 16 is a schematic plane development view of a phase winding in the seventh embodiment of the present invention;

fig. 17 is a schematic plane development view of an eighth phase winding according to an 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 in this application, the radial outermost layer of the stator core may be the outermost layer in the direction away from the central axis of the stator core, or may be the outermost 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, the stator core 20 having a plurality of core 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, 9 to 17, 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 of layers may be four, six, eight, or more. The motor stator in the embodiment is a motor stator in the hair pin motor.

Referring to fig. 1 to 17, in the stator winding 10 in 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 2; two slots 21 are provided for each pole of the rotor, the number of slots per pole per phase being 2 in the present embodiment, the rotor having eight poles and being such that the number of slots 21 provided in the stator core 20 is equal to 48 (i.e., 2X8X3) for each phase of the three-phase stator winding 10, and further, in the present embodiment, the stator core 20 defines one tooth 22 by two adjacent slots 21. in the present embodiment, the stator core 20 is formed by laminating a plurality of annular magnetic steel plates to form both end faces 25, 26 in the axial direction of the stator core, and other conventional metal plates may be used instead of the magnetic steel plates.

As shown in fig. 9 to 17, in the first to sixth embodiments, each phase winding (U-phase winding, V-phase winding, W-phase winding) includes 1 first conductor group, 12 second conductor groups, 2 third conductor groups, and 1 fourth conductor group (Q is equal to 1 in this case) connected in series, and as shown in fig. 16, in the seventh embodiment, each phase winding (U-phase winding, V-phase winding, W-phase winding) is a 2-branch parallel winding, and the 2-branch parallel winding includes 2 first conductor groups, 8 second conductor groups, 4 third conductor groups, and 2 fourth conductor groups (K is equal to 2 in this case, Q is equal to 2 in this case); as shown in fig. 17, in the eighth embodiment, each phase winding (U-phase winding, V-phase winding, W-phase winding) includes 1 first conductor group, 11 second conductor groups, 2 third conductor groups, and 1 fourth conductor group (Q is equal to 1 in this case) connected in series.

As shown in fig. 3, 9, 11, 12, 13, 14, 16, and 17, in the first to eighth embodiments, the first conductor set includes: the two identical first conductors 150 are arranged, each first conductor 150 comprises two in-slot portions 301 located inside the same radial different iron core slots, a wire inserting end 302 located outside the iron core slot 21, the wire inserting end 302 located outside the axial outer portion 25 of the iron core slot 21 and connected with the two in-slot portions 301 of the conductor, two welding ends 303 located outside the iron core slot and extending in the same direction (both towards the left), the two welding ends 303 located outside the axial outer portion 26 of the iron core slot 21 and connected with the two in-slot portions 301 of the conductor in the same layer, and the two in-slot portions of the first conductor are located in the first layer in the radially outermost layer of the stator core; the two slot interiors of the first conductor 150 of the first conductor group are located in the core slots 25, 31, and the two slot interiors of the second first conductor 150 of the first conductor group are located in the core slots 26, 32, so that it can be seen that the two slot interiors of the two first conductors 150 of the first conductor group are respectively located in two core slots adjacent to each other in the circumferential direction of the stator core.

As shown in fig. 8, 9, 10, and 11, in the first to third embodiments, the seventh embodiment, and the eighth embodiment, the second conductor set includes: two identical conductors, namely a second conductor 350, the second conductor 350 of the second conductor group comprises two slot interiors 301 located inside different core slots of two radially adjacent layers, a wire inserting end 302 located outside the core slot 21 and connected with the two slot interiors 301 of the conductor at the axial outer 25 end of the core slot 21, two welding ends 303 located outside the core slot and extending in opposite directions (the extending directions of the two welding ends are opposite), the two welding ends 303 located at the axial outer 26 end of the core slot 21 and connected with the two slot interiors 301 of the conductor in the same layer respectively, the two slot interiors of each conductor of the different second conductor groups are located on the 1 st layer and the 2 nd layer which are radially adjacent to the stator core, and the two slot interiors of each conductor of the other second conductor group are located on the 3 rd layer and the 4 th layer which are radially adjacent to the stator core; the two slot interiors of the second conductor 350 of the second conductor group are located in the core slots 1, 7, and the two slot interiors of the second conductor 350 of the second conductor group are located in the core slots 2, 8, so that it can be seen that the two slot interiors of the two second conductors 350 of the second conductor group are respectively located in two core slots adjacent to each other in the circumferential direction of the stator core.

As shown in fig. 5, 12, 13, and 14, in the fourth to sixth embodiments, the second conductor group includes: two different conductors, sixth large conductor 300A, each of the sixth large conductor 300A and the sixth small conductor 300B of the second conductor group includes two slot interiors 301 located inside different core slots, a wire inserting end 302 located outside the core slot 21, the wire inserting end 302 located at the axially outer 25 end of the core slot 21 and connected to the two slot interiors 301 of the conductor, two welding ends 303 located outside the core slot and extending in opposite directions (the two welding ends extend in opposite directions), the two welding ends 303 located at the axially outer 26 end of the core slot 21 and connected to the two slot interiors 301 of the conductor in the same layer respectively, the two slot interiors of each conductor of different second conductor groups are located on the 1 st layer and the 2 nd layer which are radially adjacent to the stator core, and the two slot interiors of each conductor of another second conductor group are located on the 3 rd layer and the 4 th layer which are radially adjacent to the stator core; the two slot interiors of the sixth large conductor 300A of the second conductor group are located in the core slots 1, 8, and the two slot interiors of the sixth small conductor 300B of the second conductor group are located in the core slots 2, 7, whereby it can be seen that the two slot interiors of the sixth large conductor 300A of the second conductor group surround the sixth small conductor 300B of the second conductor group.

As shown in fig. 1 to 17, in the first to eighth embodiments, the third conductor set includes: two conductors 250(200A, 200B), each conductor 250(200A, 200B) includes two slot interiors 301 located inside different core slots of two radially adjacent layers of the stator core, a wire insertion end 302 located outside the core slot 21, the wire insertion end 302 located outside 25 axial ends of the core slot 21 and connected to the two slot interiors 301 of the conductor, two welding ends 303 located outside the core slot and extending in opposite directions (the extending directions of the two welding ends are opposite), the two welding ends 303 located outside 26 axial ends of the core slot 21 and connected to the two slot interiors 301 of the conductor in the same layer respectively, and the two slot interiors of the conductor of the third conductor group are located on the 2 nd layer and the 3 rd layer radially adjacent to the stator core.

As shown in fig. 4 and 9 to 17, in the first to eighth embodiments, the fourth conductor set includes: each of the fourth large conductor 100A and the fourth small conductor 100B of the fourth conductor group includes two slot interiors 301 located inside the same radial different iron core slots of the stator core, a wire insertion end 302 located outside the iron core slot 21, the wire insertion end 302 located outside the iron core slot 21 and connected to the two slot interiors 301 of the conductor, two welding ends 303 located outside the iron core slot and extending in the same direction (both right), the two welding ends 303 located outside the iron core slot 21 and extending in the same direction 26 and connected to the two slot interiors 301 of the conductor in the same layer, and the two slot interiors of each conductor of the fourth conductor group are located in the first layer (the fourth layer located on the radially outermost layer) of the radially innermost layer of the stator core; the two slot interiors of the fourth large conductor 100A of the fourth conductor group are located in the core slots 19, 26, and the two slot interiors of the fourth small conductor 100B of the fourth conductor group are located in the core slots 20, 25, whereby it can be seen that the two slot interiors of the fourth large conductor 100A of the fourth conductor group surround the two slot interiors of the fourth small conductor 100B. According to the technical scheme of the motor stator in the application embodiment, a bus bar which is connected in series or in parallel among 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 layer of any iron core slot and any layer of any 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. 3, 4, 6, 8, 9 to 17, in the first to seventh embodiments, the two groove interiors of the first conductor group are located in the core grooves 25, 31, respectively, and thus it can be seen that the pitch between the two groove interiors of the first conductor is the full pitch 6, and the two groove interiors of the fourth large conductor of the fourth conductor group are located in the core grooves 19, 26, respectively, and thus it can be seen that the pitch between the two groove interiors of the fourth large conductor 100A is the long pitch 7, and the two groove interiors of the fourth small conductor of the fourth conductor group are located in the core grooves 20, 25, respectively, and thus it can be seen that the pitch between the two groove interiors of the fourth small conductor 100B is the short pitch 5.

With reference to fig. 9, 15, and 17, in the first and eighth embodiments, the phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2 third conductor sets, that is, includes two identical third conductor sets, and when the even-numbered layer is 6, the U-phase winding includes 4 third conductor sets, and when the even-numbered layer is 8, the U-phase winding includes 6 third conductor sets; the phase winding (U-phase winding or V-phase winding or W-phase winding) is provided with a plurality of first connecting and welding ends and second connecting and welding ends which are connected together, the welding end positioned on a first layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a second layer in the radial direction of the stator core is the second connecting and welding end, the welding end positioned on a third layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a fourth layer in the radial direction of the stator core is the second connecting and welding end, and the sum of the span of the first connecting and welding ends adjacent to the second connecting and welding ends in the same radial direction of the stator core is the whole pitch 6; specifically, the pitch of the connection between the first connection welding end of one first conductor 150 or one second conductor 350 located in the same radial fourth layer of the stator core and the second connection welding end of one second conductor 350 or one third conductor 250 located in the same radial adjacent third layer of the stator core is the whole pitch 6, and the pitch of the connection between the first connection welding end of the other welding end of one second conductor 350 or one third conductor 250 located in the same radial second layer of the stator core and the second connection welding end of one second conductor 350 or one fourth large conductor 100A or one fourth small conductor 100B located in the same radial adjacent first layer of the stator core is the whole pitch 6; the two in-slot portions of the second conductor 350 of the second conductor group are located in the core slots 1 and 7, respectively, i.e., the pitch between the two in-slot portions of the second conductor is the full pitch 6, the two conductors of the third conductor group are the same third conductor 250, the two in-slot portions of the first third conductor 250 of the third conductor group are located in the core slots 19 and 25, and the two in-slot portions of the second third conductor 250 of the third conductor group are located in the core slots 20 and 26, i.e., the pitch between the two in-slot portions of the third conductor 250 is the full pitch, so that it can be seen that the two in-slot portions of the two third conductors 250 of the third conductor group are located in the two core slots adjacent to each other in the circumferential direction of the stator core, respectively.

As shown in fig. 10 and fig. 15, in the second embodiment, the phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2 third conductor sets, that is, includes two identical third conductor sets, and when the even number layer is 6, the U-phase winding includes 4 third conductor sets, and when the even number layer is 8, the U-phase winding includes 6 third conductor sets; the phase winding (U-phase winding or V-phase winding or W-phase winding) is provided with a plurality of first connecting and welding ends and second connecting and welding ends which are connected together, the welding end positioned on a first layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a second layer in the radial direction of the stator core is the second connecting and welding end, the welding end positioned on a third layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a fourth layer in the radial direction of the stator core is the second connecting and welding end, and the sum of the span of the first connecting and welding ends adjacent to the second connecting and welding ends in the same radial direction of the stator core is the whole pitch 6; specifically, the pitch of the connection between the first connection welding end of one first conductor 150 or one second conductor 350 located in the same radial fourth layer of the stator core and the second connection welding end of one second conductor 350 or one fifth large conductor 200A or one fifth small conductor 200B located in the same radial adjacent third layer of the stator core is a whole pitch 6, and the pitch of the connection between the first connection welding end of the other welding end of one second conductor 350 or one fifth large conductor 200A or one fifth small conductor 200B located in the same radial second layer of the stator core and the second connection welding end of one second conductor 350 or one fourth large conductor 100A or one fourth small conductor 100B located in the same radial adjacent first layer of the stator core is a whole pitch 6; the two groove interiors of the second conductor group are respectively located in the core grooves 1 and 7, namely, the pitch between the two groove interiors of the second conductor is the whole pitch 6, the two conductors of the third conductor group are the different fifth large conductor 200A and the fifth small conductor 200B, the two groove interiors of the fifth large conductor 200A of the third conductor group are respectively located in the core grooves 19 and 26, the two groove interiors of the fifth small conductor 200B of the third conductor group are respectively located in the core grooves 20 and 25, namely, the pitch between the two groove interiors of the fifth large conductor 200A is the long pitch, the pitch between the two groove interiors of the fifth small conductor 200B is the short pitch, and the two groove interiors of the fifth large conductor 200A of the third conductor group surround the fifth small conductor 200B of the third conductor group.

As shown in fig. 11 and fig. 15, in the third embodiment, the phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2 third conductor sets, that is, includes two different third conductor sets, and when the even number layer is 6, the U-phase winding includes 4 third conductor sets, and when the even number layer is 8, the U-phase winding includes 6 third conductor sets; the phase winding (U-phase winding or V-phase winding or W-phase winding) is provided with a plurality of first connecting and welding ends and second connecting and welding ends which are connected together, the welding end positioned on a first layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a second layer in the radial direction of the stator core is the second connecting and welding end, the welding end positioned on a third layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a fourth layer in the radial direction of the stator core is the second connecting and welding end, and the sum of the span of the first connecting and welding ends adjacent to the second connecting and welding ends in the same radial direction of the stator core is the whole pitch 6; specifically, the pitch of the connection between the first connection welding end of one first conductor 150 or one second conductor 350 located in the same radial fourth layer of the stator core and the second connection welding end of one second conductor 350 or one third conductor 250 or one fifth large conductor 200A or one fifth small conductor 200B located in the same radial adjacent third layer of the stator core is the whole pitch 6, and the pitch of the connection between the first connection welding end of the other welding end of one second conductor 350 or one fifth large conductor 200A or one fifth small conductor 200B located in the same radial second layer of the stator core and the second connection welding end of one second conductor 350 or one fourth large conductor 100A or one fourth small conductor 100B located in the same radial adjacent first layer of the stator core is the whole pitch 6; the two groove interiors of the second conductor group are respectively positioned in the core grooves 1 and 7, namely the pitch between the two groove interiors of the second conductor is the whole pitch 6, the two conductors of the first third conductor group are the different fifth large conductor 200A and the fifth small conductor 200B, the two groove interiors of the fifth large conductor 200A of the third conductor group are respectively positioned in the core grooves 19 and 26, the two groove interiors of the fifth small conductor 200B of the third conductor group are respectively positioned in the core grooves 20 and 25, namely the pitch between the two groove interiors of the fifth large conductor 200A is the long pitch, the pitch between the two groove interiors of the fifth small conductor 200B is the short pitch, and the two groove interiors of the fifth large conductor 200A of the third conductor group surround the fifth small conductor 200B of the third conductor group; the two conductors of the second third conductor group are the same third conductor 250, the two slot interiors of the first third conductor 250 of the third conductor group are located in the core slots 25 and 31, and the two slot interiors of the second third conductor 250 of the third conductor group are located in the core slots 26 and 32, that is, the pitch between the two slot interiors of the third conductor 250 is a full pitch, so that it can be seen that the two slot interiors of the two third conductors 250 of the third conductor group are respectively in the two core slots adjacent to each other in the circumferential direction of the stator core.

With reference to fig. 13 and 15, in the fifth embodiment, the phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2 third conductor sets, that is, includes two identical third conductor sets, and when the even number layer is 6, the U-phase winding includes 4 third conductor sets, and when the even number layer is 8, the U-phase winding includes 6 third conductor sets; the phase winding (U-phase winding or V-phase winding or W-phase winding) is provided with a plurality of first connecting and welding ends and second connecting and welding ends which are connected together, the welding end positioned on a first layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a second layer in the radial direction of the stator core is the second connecting and welding end, the welding end positioned on a third layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a fourth layer in the radial direction of the stator core is the second connecting and welding end, and the sum of the span of the first connecting and welding ends adjacent to the second connecting and welding ends in the same radial direction of the stator core is the whole pitch 6; specifically, the pitch of connecting the first connecting weld end of one first conductor 150 or one sixth large conductor 300A or one sixth small conductor 300B positioned on the same radial fourth layer of the stator core and the second connecting weld end of one sixth large conductor 300A or sixth small conductor 300B or one third conductor 250 positioned on the same radial adjacent third layer of the stator core is the whole pitch 6, the pitch of the connection between the first connection welding end of the other welding end of one sixth large conductor 300A or sixth small conductor 300B or one third conductor 250 positioned on the same radial second layer of the stator core and the second connection welding end of one welding end of the sixth large conductor 300A or sixth small conductor 300B or fourth large conductor 100A or fourth small conductor 100B positioned on the same radial adjacent first layer of the stator core is the whole pitch 6; the two slot interiors of the sixth large conductor of the second conductor group are located in the core slots 1 and 8, respectively, the two slot interiors of the sixth small conductor of the second conductor group are located in the slots 2 and 7, respectively, that is, the pitch between the two slot interiors of the sixth large conductor is long pitch 7, the pitch between the two slot interiors of the sixth small conductor is short pitch 5, the two conductors of the third conductor group are the same third conductor 250, the two slot interiors of the first third conductor 250 of the third conductor group are located in the core slots 19 and 25, and the two slot interiors of the second third conductor 250 of the third conductor group are located in the core slots 20 and 26, respectively, and thus it can be seen that the two slot interiors of the two third conductors 250 of the third conductor group are located in the two core slots adjacent to the stator core in the circumferential direction, that is, respectively, that is, the pitch between the two slot interiors of the third conductor 250 is a full pitch.

As shown in fig. 12 and fig. 15, in the fourth embodiment, the phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2 third conductor sets, that is, includes two identical third conductor sets, and when the even number layer is 6, the U-phase winding includes 4 third conductor sets, and when the even number layer is 8, the U-phase winding includes 6 third conductor sets; the phase winding (U-phase winding or V-phase winding or W-phase winding) is provided with a plurality of first connecting and welding ends and second connecting and welding ends which are connected together, the welding end positioned on a first layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a second layer in the radial direction of the stator core is the second connecting and welding end, the welding end positioned on a third layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a fourth layer in the radial direction of the stator core is the second connecting and welding end, and the sum of the span of the first connecting and welding ends adjacent to the second connecting and welding ends in the same radial direction of the stator core is the whole pitch 6; specifically, the pitch of the first connecting weld end of one first conductor 150 or one sixth large conductor 300A or one sixth small conductor 300B located in the same radial fourth layer of the stator core and the second connecting weld end of one sixth large conductor 300A or one sixth small conductor 300B or one fifth large conductor 200A or one fifth small conductor 200B located in the same radial adjacent third layer of the stator core is the whole pitch 6, and the pitch of the first connecting weld end of the other weld end of one sixth large conductor 300A or one sixth small conductor 300B or one fifth large conductor 200A or one fifth small conductor 200B located in the same radial second layer of the stator core and the second connecting weld end of one sixth large conductor 300A or one sixth small conductor 300B or one fourth large conductor 100A or one fourth small conductor 100B located in the same radial adjacent first layer of the stator core and the second connecting weld end of one sixth large conductor 300A or one sixth small conductor 300B or one fourth large conductor 100A or one fourth small conductor 100B located in the same radial adjacent first layer of the stator core is the whole pitch 6 (ii) a The two inner slots of the sixth large conductor of the second conductor set are located in slots 1, 8, respectively, the two inner slots of the sixth small conductor of the second conductor set are located in slots 2, 7, respectively, that is, the pitch between the inside of the two slots of the sixth large conductor is long pitch 7, the pitch between the inside of the two slots of the sixth small conductor is short pitch 5, the two conductors of the third conductor group are the different fifth large conductor 200A, the fifth small conductor 200B, the inside of the two slots of the fifth large conductor 200A of the third conductor group are respectively located in the core slots 19, 26, the inside of the two slots of the fifth small conductor 200B of the third conductor group are respectively located in the core slots 20, 25, that is, the pitch between the two groove interiors of the fifth large conductor 200A is a long pitch, the pitch between the two groove interiors of the fifth small conductor 200B is a short pitch, and the two groove interiors of the fifth large conductor 200A of the third conductor group surround the fifth small conductor 200B of the third conductor group.

With reference to fig. 14 and 15, in the sixth embodiment, the phase winding (U-phase winding or V-phase winding or W-phase winding) includes 2 third conductor sets, that is, includes two different third conductor sets, and when the even number layer is 6, the U-phase winding includes 4 third conductor sets, and when the even number layer is 8, the U-phase winding includes 6 third conductor sets; the phase winding (U-phase winding or V-phase winding or W-phase winding) is provided with a plurality of first connecting and welding ends and second connecting and welding ends which are connected together, the welding end positioned on a first layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a second layer in the radial direction of the stator core is the second connecting and welding end, the welding end positioned on a third layer in the radial direction of the stator core is the first connecting and welding end, the welding end positioned on a fourth layer in the radial direction of the stator core is the second connecting and welding end, and the sum of the span of the first connecting and welding ends adjacent to the second connecting and welding ends in the same radial direction of the stator core is the whole pitch 6; specifically, the pitch of the first connecting weld end of one first conductor 150 or one sixth large conductor 300A or one sixth small conductor 300B located in the same radial fourth layer of the stator core and the second connecting weld end of one sixth large conductor 300A or one sixth small conductor 300B or one third conductor 250 or one fifth large conductor 200A or one fifth small conductor 200B located in the same radial adjacent third layer of the stator core is the whole pitch 6, and the first connecting weld end of the other weld end of one sixth large conductor 300A or one sixth small conductor 300B or one fifth large conductor 200A or one fifth small conductor 200B located in the same radial second layer of the stator core and the second connecting weld end of one sixth large conductor 300A or one sixth small conductor 300B or one fourth large conductor 100A or one fourth small conductor 100B located in the same radial adjacent first layer of the stator core The pitch of the connection is a full pitch 6; the two inner slots of the sixth large conductor of the second conductor set are located in slots 1, 8, respectively, the two inner slots of the sixth small conductor of the second conductor set are located in slots 2, 7, respectively, that is, the pitch between the inside of the two slots of the sixth large conductor is long pitch 7, the pitch between the inside of the two slots of the sixth small conductor is short pitch 5, the two conductors of the first and third conductor groups are the different fifth large conductor 200A and the fifth small conductor 200B, the inside of the two slots of the fifth large conductor 200A of the third conductor group are respectively located in the core slots 19 and 26, the inside of the two slots of the fifth small conductor 200B of the third conductor group are respectively located in the core slots 20 and 25, that is, the pitch between the two groove interiors of the fifth large conductor 200A is a long pitch, the pitch between the two groove interiors of the fifth small conductor 200B is a short pitch, and the two groove interiors of the fifth large conductor 200A of the third conductor group surround the fifth small conductor 200B of the third conductor group; the two conductors of the second third conductor group are the same third conductor 250, the two slot interiors of the first third conductor 250 of the third conductor group are located in the core slots 25 and 31, and the two slot interiors of the second third conductor 250 of the third conductor group are located in the core slots 26 and 32, so that it can be seen that the two slot interiors of the two third conductors 250 of the third conductor group are respectively located in two core slots adjacent to the stator core in the circumferential direction, that is, the pitch between the two slot interiors of the third conductor 250 is the whole pitch.

With reference to fig. 1 to 16, in the first to seventh embodiments of the present invention, two welding ends of the first conductor group of the phase winding (U-phase winding or V-phase winding or W-phase winding) are located at the 25 outside of the stator slot, two welding ends of the sixth large conductor of the second conductor group are located at the 25 outside of the stator slot, two welding ends of the sixth small conductor of the second conductor group are located at the 25 outside of the stator slot, or two welding ends of the second conductor group are located at the 25 outside of the stator slot, two welding ends of the third conductor group or the fifth large conductor and the fifth small conductor of the third conductor group are located at the 25 outside of the stator slot, two welding ends of the fourth large conductor of the fourth small conductor group are located at the 25 outside of the stator slot, that is, each welding end of each conductor group of each phase winding is located at the 25 outside of the stator slot, and wire insertion end of the first conductor group of the phase winding (U-phase winding or V-phase winding) is located at the 25 outside of the stator slot The plug wire ends of the sixth large conductor of the second conductor group are located at the 26 ends outside the stator slot, the plug wire ends of the sixth small conductor of the second conductor group are located at the 26 ends outside the stator slot, or the plug wire ends of the second conductor group are located at the 26 ends outside the stator core slot, the plug wire ends of the third conductor or the fifth large conductor and the fifth small conductor of the third conductor group are located at the 26 ends outside the stator slot, the plug wire ends of the fourth large conductor and the fourth small conductor of the fourth conductor group are located at the 26 ends outside the stator slot, namely, each plug wire end of each conductor group of each phase winding is located at the 26 ends outside the stator slot.

Referring to fig. 17, in the eighth embodiment, in addition to the welding terminals connected to the outgoing lines in the phase winding (U-phase winding or V-phase winding or W-phase winding) (400 conductor includes a slot interior and two welding terminals located at two axial end faces of the stator core and connected to the slot interior, the weld end connected to the lead-out wire is a weld end of the 400 conductor on the side of the second end 26 of the stator core) is located outside the second end 26 of the stator core, each weld end 303 of each conductor of each of the remaining conductor sets (first, second, third, fourth) of the phase windings is located outside the first end 25 of the stator core, and each plug end 302 of each conductor set of the first, second, third, fourth) of each phase windings is located outside the second end 26 of the stator core.

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 (12)

1. An electric machine stator comprising:

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

a stator winding including a plurality of phase windings mounted on the stator core and forming an even number of layers in a radial direction of the stator core;

the method is characterized in that: each phase winding is formed by connecting a plurality of conductor groups in series along the circumferential direction of the stator core, or each phase winding is formed by connecting a plurality of conductor groups in parallel in a way that K parallel branches are formed along the circumferential direction of the stator core, wherein K is a multiple of 2 of the number of slots of each phase of each pole;

the plurality of conductor sets includes: q first conductor groups, a plurality of second conductor groups, a plurality of third conductor groups, and Q fourth conductor groups, Q being an integer of 1 or more;

wherein the first conductor set includes: the two first conductors of the first conductor group are positioned in the radially outermost layer of the stator core;

the second conductor set includes: a sixth large conductor and a sixth small conductor, or the second conductor set includes: two identical second conductors; each conductor of the second conductor group comprises two slot interiors positioned in different iron core slots, a wire inserting end positioned outside the iron core slots and two welding ends positioned outside the iron core slots and opposite in extending direction, the two slot interiors of each conductor of the second conductor group are respectively positioned in N layers and N +1 layers which are adjacent to each other in the radial direction of the stator iron core, wherein N is an odd number;

the third conductor set includes: each conductor of the third conductor group comprises two in-slot parts positioned in different iron core slots, a wire inserting end positioned outside the iron core slots and two welding ends positioned outside the iron core slots and opposite in extension direction, and the two in-slot parts of each conductor of the third conductor group are respectively positioned in the radially adjacent N +1 layer and the N +2 layer of the stator iron core;

the fourth conductor set includes: each conductor of the fourth conductor group comprises two in-slot parts located in different iron core slots, a wire inserting end located outside the iron core slots and two welding ends located outside the iron core slots and having the same extending direction, the extending direction of each welding end of each conductor of the fourth conductor group is opposite to the extending direction of each welding end of each conductor of the first conductor group, and the two in-slot parts of each conductor of the fourth conductor group are located in the radially innermost layer of the stator core.

2. The stator according to claim 1, wherein a pitch between two groove insides of the first conductor group is a full pitch, a pitch between two groove insides of the fourth large conductor of the fourth conductor group is a long pitch, and a pitch between two groove insides of the fourth small conductor of the fourth conductor group is a short pitch.

3. The electric machine stator according to claim 2, wherein a pitch between two groove interiors of a sixth large conductor of the second conductor group is a long pitch, and a pitch between two groove interiors of a sixth small conductor of the second conductor group is a short pitch; the two conductors of the third conductor set are identical third conductors, and the pitch between the two groove interiors of the third conductors is a full pitch.

4. The electric machine stator according to claim 2, wherein a pitch between two groove interiors of a sixth large conductor of the second conductor group is a long pitch, and a pitch between two groove interiors of a sixth small conductor of the second conductor group is a short pitch; the two conductors of the third conductor group are a fifth large conductor and a fifth small conductor, the pitch between the two groove interiors of the fifth large conductor is a long pitch, and the pitch between the two groove interiors of the fifth small conductor is a short pitch.

5. The electric machine stator according to claim 2, wherein a pitch between two groove interiors of a sixth large conductor of the second conductor group is a long pitch, and a pitch between two groove interiors of a sixth small conductor of the second conductor group is a short pitch; two conductors of one third conductor group of the phase winding are a fifth large conductor and a fifth small conductor, the pitch between the two groove interiors of the fifth large conductor is a long pitch, and the pitch between the two groove interiors of the fifth small conductor is a short pitch; the two conductors of the other of the third conductor sets of the phase winding are third conductors having a pitch between two slot interiors of the full pitch.

6. The electric machine stator of claim 2, wherein the pitch between the two slot interiors of the second conductors of the second conductor set is a full pitch; the two conductors of the third conductor set are identical third conductors, and the pitch between the two groove interiors of the third conductors is a full pitch.

7. The electric machine stator of claim 2, wherein the pitch between the two slot interiors of the second conductors of the second conductor set is a full pitch; the two conductors of the third conductor group are a fifth large conductor and a fifth small conductor, the pitch between the two groove interiors of the fifth large conductor is a long pitch, and the pitch between the two groove interiors of the fifth small conductor is a short pitch.

8. The electric machine stator of claim 2, wherein the pitch between the two slot interiors of the second conductors of the second conductor set is a full pitch; two conductors of one third conductor group of the phase winding are a fifth large conductor and a fifth small conductor, the pitch between the two groove interiors of the fifth large conductor is a long pitch, and the pitch between the two groove interiors of the fifth small conductor is a short pitch; the two conductors of the other of the third conductor sets of the phase winding are third conductors having a pitch between two slot interiors of the full pitch.

9. The electric machine stator of claim 1, wherein the phase winding has a plurality of first connection weld ends and a plurality of second connection weld ends connected together, the weld ends located in the same radially adjacent M-1 layers of the stator core are the first connection weld ends, the weld ends located in the same radially adjacent M layers of the stator core are the second connection weld ends, the sum of the span of the first connection weld ends and the span of the second connection weld ends is 6, and M is an even number.

10. The electric machine stator of any one of claims 1 to 9, 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 each phase winding is located outside the second end of the stator core.

11. The electric machine stator according to any one of claims 1 to 9, wherein the weld ends of the phase windings other than the connection lead-out wire are located outside the second end of the stator core, each weld end of each conductor group of the remaining phase windings is located outside the first end of the stator core, and each plug end of each conductor group of each phase winding is located outside the second end of the stator core.

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

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