CN214124958U - 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 M layer is formed in the radial direction of the stator core; the method is characterized in that: each phase winding is formed by a plurality of conductors along the circumferential direction of the stator core, X branch windings are connected in parallel, X is an even number which is more than or equal to 2, and M is an even number which is more than 4; each branch winding at least comprises a first conductor, the inner parts of two slots of the first conductor are positioned on the first layer and the fourth layer in the radial direction of the stator core, and the inner parts of two slots of the other conductors except the first conductor in the branch winding are positioned on two layers adjacent to the stator core in the radial direction; by adopting the technical scheme, the gap bridge wire is omitted, the heat dissipation is uniform, the power and the torque are improved, the wiring mode is simplified, the process is simplified, 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, the hairpin coils penetrate into the slots of the stator core according to a certain arrangement mode to form a single-phase winding or a multi-phase winding of a required motor, the hairpin coils used in the prior art are more in variety, so that the stator winding needs to use a large number of bridge wires to connect the branches of each phase of winding, the arrangement mode of the stator winding 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, cancellation gap bridge line, the heat dissipation is even, and the mode of connection has been simplified to lifting power and moment of torsion, and then has simplified technology, 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 M layers in a radial direction of the stator core;

each phase winding is formed by a plurality of conductors along the circumferential direction of the stator core, X branch windings are connected in parallel, X is an even number which is more than or equal to 2, and M is an even number which is more than 4;

each branch winding at least comprises a first conductor, the inner parts of two slots of the first conductor are positioned on the first layer and the fourth layer in the radial direction of the stator core, and the inner parts of two slots of the other conductors except the first conductor in the branch winding are positioned on two layers adjacent to the stator core in the radial direction;

the other conductors of each branch winding comprise a first conductor, a second conductor and a fourth conductor, the two slot interiors of each conductor in the first conductor, the second conductor and the fourth conductor are respectively positioned on the Nth layer and the (N + 1) th layer in the radial direction of the stator core, wherein N is an odd number which is more than or equal to 1;

the other conductors of each branch winding also comprise a third conductor, the insides of two slots of the third conductor are positioned on the radial Y +1 th layer and the radial Y +2 th layer of the stator core, the third conductor and the first conductor are positioned in the same magnetic pole of the stator winding, wherein Y is 1,5, 9 and 13; the two slot interiors of conductor three are located radially inward of the two slot interiors of the first conductor.

Furthermore, the outgoing lines of each branch winding are located on two layers of the stator core at intervals in the radial direction, and the interval layer distance is smaller than M-1 layers.

Furthermore, the conductor four and the first conductor in each phase winding are positioned in the same magnetic pole of the stator winding, and the inside of one slot of the conductor four and the inside of one slot of the first conductor are positioned in the same radial layer of the stator core.

Further, the pitch of the conductor four of each branch winding is a full pitch, the pitch of the conductor one of the branch winding is a long pitch, the pitch of the conductor two of the branch winding is a short pitch, the pitch of the first conductor of the branch winding is a long pitch, and the pitch of the conductor three of the branch winding is a short pitch.

Further, one welding terminal of the first conductor of each branch winding is connected with one welding terminal of the circumferentially adjacent second conductor in an undulating manner, and/or one welding terminal of the fourth conductor is connected with one welding terminal of the circumferentially adjacent first conductor in an undulating manner, and the other welding terminal of the fourth conductor is connected with one welding terminal of the circumferentially adjacent second conductor in an undulating manner.

Furthermore, the number of layers in the branch winding, which are located in the same magnetic pole of the stator winding as the first conductor and the third conductor, is greater than 4, wherein the number of layers in the radial direction of the stator core in two slots of the first conductor, the second conductor and the fourth conductor, which are located in the same magnetic pole of the stator winding as the first conductor and the third conductor, is one, the second conductor, the fourth conductor, the second conductor or the fourth conductor and the first conductor.

Furthermore, the outlet end of the first branch winding of the X branch windings of each phase winding is connected in series with the lead end of the other branch winding of the X/2+1 th branch winding of the phase winding to form X/2 parallel branch windings.

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 M layers in a radial direction of the stator core; each phase winding is formed by a plurality of conductors along the circumferential direction of the stator core, X branch windings are connected in parallel, X is an even number which is more than or equal to 2, and M is an even number which is more than 4; each branch winding at least comprises a first conductor, the inner parts of two slots of the first conductor are positioned on the first layer and the fourth layer in the radial direction of the stator core, and the inner parts of two slots of the other conductors except the first conductor in the branch winding are positioned on two layers adjacent to the stator core in the radial direction; the other conductors of each branch winding comprise a first conductor, a second conductor and a fourth conductor, the two slot interiors of each conductor in the first conductor, the second conductor and the fourth conductor are respectively positioned on the Nth layer and the (N + 1) th layer in the radial direction of the stator core, wherein N is an odd number which is more than or equal to 1; the other conductors of each branch winding also comprise a third conductor, the insides of two slots of the third conductor are positioned on the radial Y +1 th layer and the radial Y +2 th layer of the stator core, the third conductor and the first conductor are positioned in the same magnetic pole of the stator winding, wherein Y is 1,5, 9 and 13; the two slot interiors of conductor three are located radially inward of the two slot interiors of the first conductor. According to the technical scheme, the gap bridge wire is omitted, the heat dissipation is uniform, the power and the torque are improved, the wiring mode is simplified, the process is simplified, and the processing efficiency is improved.

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 conductor in an embodiment of the present invention;

fig. 4 is a schematic plane development view of a middle phase winding according to an embodiment of the present invention;

fig. 5 is a schematic plane development view of a branch winding in a middle phase winding according to an embodiment of the present invention;

fig. 6 is a schematic plane development view of a phase winding in the second embodiment of the present invention;

fig. 7 is a schematic plane development view of a branch winding in a phase winding in the second embodiment of the present invention;

fig. 8 is a schematic plane development view of a phase winding in the third embodiment of the present invention;

fig. 9 is a schematic plane development view of one branch winding in the third phase winding according to the embodiment of the present invention;

fig. 10 is a schematic plane development view of a phase winding in the fourth embodiment of the present invention;

fig. 11 is a schematic plane development view of one branch winding in the four middle phase windings according to the embodiment of the present invention;

fig. 12 is a schematic plane development view of another branch winding in the four phase windings according to the embodiment of the present invention;

fig. 13 is a schematic plane development view of a phase winding in five phases according to an embodiment of the present invention;

fig. 14 is a schematic plane development view of another branch winding in a middle 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 the present application, the pitch is the interval between two groove interiors 501 of the same conductor along the circumferential direction, or the pitch is the sum of the span between the groove interiors 501 corresponding to one welding end of one conductor and the span between the groove interiors 501 corresponding to one welding end of another conductor; it should be noted that, in this application, the radial first layer of the stator core may be the first layer in the direction away from the central axis of the stator core, and may also be the first 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, 4 to 14, 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 M 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 number of the even-numbered M layers may be six, eight, or more. The motor stator in the embodiment is a motor stator in the hair pin motor.

Referring to fig. 1 to 14, 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, 2 slots per pole per phase in the present embodiment, the rotor having eight poles and doing so for each phase of the three-phase stator winding 10, the number of slots 21 provided in the stator core 20 being equal to 48 (i.e., 2X8X3), the pole pitch being the number of phases per stator winding X slots per pole per phase, the conductors having a pitch less than the pole pitch being short-pitch conductors, the conductors having a pitch equal to the pole pitch being full-pitch conductors, the conductors having a pitch greater than the pole pitch being long-pitch conductors, in the present embodiment the pole pitch being 2X3 being 6; in this application, the first conductor 150A is a long-pitch conductor, the second conductor 150B is a short-pitch conductor, the first conductor 200A is a long-pitch conductor, the third conductor 300B is a short-pitch conductor, and the fourth conductor 400 is a full-pitch conductor.

As shown in fig. 4 to 14, in the first to fourth embodiments, each phase winding (U-phase winding, V-phase winding, W-phase winding) includes a plurality of first conductors, a plurality of second conductors, a plurality of third conductors, and a plurality of fourth conductors, and 4 branch windings are formed in parallel along the circumferential direction of the stator core (X is 4); in the first to fourth embodiments, each branch winding includes at least one first conductor, a plurality of first conductors, a plurality of second conductors, a conductor three, and a plurality of fourth conductors, which are connected in series along the circumferential direction of the stator core; with reference to fig. 3, each conductor includes a welding terminal 503, an in-slot portion 501, a plug terminal 502, an in-slot portion 501 and a welding terminal 503 which are sequentially connected end to end, the two in-slot portions are located in two slots of the stator core circumferentially spaced by a specified slot distance, one end of the plug terminal located outside the axial slot of the stator core is connected with the two in-slot portions, the two welding terminals are located outside the stator core and one end of the plug terminal away from the two welding terminals is connected with the two in-slot portions, the extending directions of the two welding terminals are opposite, and the two welding terminals are located on the same layer relative to the two in-slot portions.

As shown in fig. 4 to 14, in the first to fifth embodiments, two slot interiors of the first conductor 200A are located in the first and fourth radial layers of the stator core (where M is equal to 8), in the first embodiment, two slot interiors of the first conductor 150A are located in two radially adjacent layers of the stator core, that is, the first and second layers or the third layer and the fourth layer or the fifth layer and the sixth layer or the seventh layer and the eighth layer, and two slot interiors of the second conductor 150B are located in two radially adjacent layers of the stator core, that is, the first and second layers or the third and fourth layers or the fifth and sixth layers or the seventh and eighth layer, and two slot interiors of the fourth conductor 400 are located in two radially adjacent layers of the stator core, that is, the first and second layers or the third and fourth layers or the fifth and sixth layers or the seventh and eighth layers, (where N is 1, 3, 5, 7 in the present embodiment);

with reference to fig. 1 to 14, in the first embodiment, the third embodiment to the fifth embodiment, when M is equal to 8, each branch winding further includes a third conductor, two slot interiors of the third conductor are located at the radial 2 nd layer and the radial 3 rd layer of the stator core, where Y is equal to 1, in the second embodiment, when M is equal to 8, each branch winding further includes a third conductor, two slot interiors of the first third conductor are located at the radial 2 nd layer and the radial 3 rd layer of the stator core, and two slot interiors of the second third conductor are located at the radial 6 th layer and the radial 7 th layer of the stator core, where Y is 1, 5;

as shown in fig. 5, 7, 9, 11, and 12, in the first to fifth embodiments, the conductor three 300B and the first conductor 200A in each branch winding are located in the same magnetic pole of the stator winding, and with reference to fig. 4 to 14, in the first to fifth embodiments, the second magnetic pole of the stator winding is located in the 7 th to 14 th slots in the circumferential direction of the stator core, the conductor three 300B of one branch winding in each phase winding is located in the 8 th to 13 th slots in the circumferential direction of the stator core, the first conductor 200A of the branch winding is also located in the 7 th to 14 th slots in the circumferential direction of the stator core, that is, the conductor three 300B and the first conductor 200A of the phase winding are located in the same magnetic pole of the stator winding, and the two slots of the conductor three 300B of one branch winding in each phase winding are located in the 2 nd layer in the radial direction of the stator core, The 3 rd layer, the two slot interiors of the first conductor 200A of the branch winding are located at the 1 st layer and the 4 th layer in the radial direction of the stator core, namely the two slot interiors (2 layers and 3 layers) of the conductor three of the branch winding are located at the radial inner sides of the two slot interiors (1 layer and 4 layers) of the first conductor; referring to fig. 7, in the second embodiment, the sixth magnetic pole of the stator winding is located in the 31 st to 38 th slots in the circumferential direction of the stator core, the conductor three 300B of one of the branch windings in each phase winding is located in the 32 nd to 37 th slots in the circumferential direction of the stator core, the first conductor 200A of the branch winding is also located in the 31 st to 38 th slots in the circumferential direction of the stator core, namely, the conductor three 300B of the phase winding and the first conductor 200A are positioned in the same magnetic pole of the stator winding, the two groove interiors of the conductor three 300B of one branch winding in each phase winding are positioned at the 6 th layer and the 7 th layer in the radial direction of the stator core, the two slot interiors of the first conductor 200A of the branch winding are positioned at the 5 th layer and the 8 th layer in the radial direction of the stator core, namely, two groove interiors (6 layers and 7 layers) of the conductor four of the branch winding are positioned at the radial inner side of two groove interiors (5 layers and 8 layers) of the first conductor; according to the technical scheme, the gap bridge wire is omitted, the heat dissipation is uniform, the power and the torque are improved, the wiring mode is simplified, the process is simplified, and the processing efficiency is improved.

As shown in fig. 4 to 14, in the first to fourth embodiments, the lead end U1 of the first branch winding of the 4 branch windings of each phase winding is located at the 3 rd radial layer of the stator core, the lead end U3 of the branch winding is located at the 8 th radial layer of the stator core, i.e., the lead wires of the first branch winding of the phase winding are located at two radially spaced layers (two non-adjacent layers) of the stator core and the lead wire spacing 5(8-3) of the first branch winding is less than 7(8-1), the lead end U2 of the second branch winding of the 4 branch windings of the phase winding is located at the 3 rd radial layer of the stator core, the lead end U4 of the branch winding is located at the 8 th radial layer of the stator core, i.e., the lead wires of the first branch winding of the phase winding are located at two radially spaced layers (two non-adjacent layers) of the stator core and the lead wire spacing 5(8-3) of the lead wire spacing of the first branch winding is less than 7(8-1), the lead end U5 of the third branch winding of the 4 branch windings of the phase winding is positioned at the radial 8 th layer of the stator core, the outlet end U7 of the third branch winding of the 4 branch windings of the phase winding is located at the radial 3 rd layer of the stator core, that is, the outgoing lines of the first branch winding of the phase winding are positioned at two layers (two non-adjacent layers) which are radially separated from the stator core, the layer distance 5(8-3) between the outgoing lines of the first branch winding is less than 7(8-1), the lead end U6 of the fourth branch winding in the 4 branch windings of the phase winding is positioned at the 8 th layer in the radial direction of the stator core, the outlet end U8 of the fourth branch winding of the 4 branch windings of the phase winding is located at the radial 3 rd layer of the stator core, that is, the outgoing lines of the first branch winding of the phase winding are positioned at two layers (non-adjacent two layers) of the stator core at intervals in the radial direction, and the layer distance 5(8-3) of the outgoing lines of the first branch winding at intervals is less than 7 (8-1).

As shown in fig. 4, 6, 8, 10, and 13, in the first to fifth embodiments, the conductor four 400 and the first conductor 200A in each phase winding are located in the same magnetic pole of the stator winding, the second magnetic pole of the stator winding is located in the 7 th to 14 th slots in the circumferential direction of the stator core, the two slots of the first conductor four 400 in the phase winding are located in the 8 th to 14 th slots in the circumferential direction of the stator core, the two slots of the first conductor 200A in the phase winding are located in the 7 th to 14 th slots in the circumferential direction of the stator core, that is, the conductor four and the first conductor of the phase winding are located in the same magnetic pole (second magnetic pole) of the stator winding, the two slots of the first conductor four 400 in the phase winding are located at the 3 rd and 4 th layers in the radial direction of the stator core, and the two slots of the first conductor 200A in the phase winding are located at the 1 st and 4 th layers in the radial direction of the stator core, that is, that the one slot of the first conductor four conductor 400 in the phase winding and the one slot of the first conductor 200A in the phase winding are located at the 1 st and the one slot in the same position of the stator core The stator core is arranged at the 4 th layer in the radial direction, the two slot interiors of the second conductor four 400 of the phase winding are arranged at the 1 st layer and the 2 nd layer in the radial direction of the stator core, namely, the slot interior of the second conductor four 400 of the phase winding and the slot interior of the first conductor 200A are both arranged at the 1 st layer in the radial direction of the stator core; of course, in this embodiment, the remaining first conductor 200 and the conductor four 400 in each phase winding are also located in the same one of the remaining poles of the stator winding, and the inside of one slot of the conductor four and the inside of one slot of the first conductor are located in the same radial layer of the stator core.

With reference to fig. 1 to 13, in the first to fifth embodiments, two slot interiors of the conductor four 400 are located in the 7 th and 13 th slots in the stator core circumferential direction, the pitch of the conductor four 400 is a full pitch 6, two slot interiors of the conductor one 150A are located in the 1 st and 8 th slots in the stator core circumferential direction, the pitch of the conductor one 150A is a long pitch 7, two slot interiors of the conductor two 150B are located in the 2 nd and 7 th slots in the stator core circumferential direction, the pitch of the conductor two 150B is a short pitch 5, two slot interiors of the first conductor 200A are located in the 7 th and 14 th slots in the stator core circumferential direction, the pitch of the first conductor 200A is a long pitch 7, two slot interiors of the conductor three 300B are located in the 8 th and 13 th slots in the stator core circumferential direction, and the pitch of the conductor three 300B is a short pitch.

Referring to FIG. 5, in one embodiment, U1 leads are routed to one weld end of conductor three 300B, conductor three 300B is routed to one weld end of conductor one 150A, another weld end of conductor one 150A is routed to one weld end of conductor four 400, another weld end of conductor four 400 is routed to one weld end of conductor two 150B, another weld end of conductor two 150B is routed to one weld end of first conductor 200A, another weld end of first conductor 200A is routed to one weld end of conductor two 150B, another weld end of conductor two 150B is routed to one weld end of conductor four 400, another weld end of conductor four 400 is routed to one weld end of conductor one 150A, another weld end of conductor one 150A is routed to one weld end of conductor two 150B, and another weld end of conductor two 150B is routed to one weld end of conductor one 150A, the other weld end of conductor one 150A is crimped around one weld end of conductor two 150B, the other weld end of conductor two 150B is crimped around one weld end of conductor one 150A, the other weld end of conductor one 150A is connected with U3 wire outlet, i.e. one weld end of first conductor 200A of the bypass winding is crimped around one weld end of circumferentially adjacent conductor two 150B, one weld end of conductor four 400 of the bypass winding is crimped around one weld end of circumferentially adjacent conductor one 150A, and the other weld end of conductor four 400 is crimped around one weld end of the connecting circumferentially adjacent conductor two 150B.

Referring to FIG. 7, in the second embodiment, U1 leads are connected to one of the terminals of conductor three 300B, conductor three 300B is connected to one of the terminals of conductor one 150A, another of the terminals of conductor one 150A is connected to one of the terminals of conductor four 400, another of the terminals of conductor four 400 is connected to one of the terminals of conductor two 150B, another of the terminals of conductor two 150B is connected to one of the terminals of first conductor 200A, another of the terminals of first conductor 200A is connected to one of the terminals of conductor two 150B, another of the terminals of conductor two 150B is connected to one of the terminals of conductor four 400, another of the terminals of conductor four 400 is connected to one of the terminals of conductor one 150A, another of the terminals of conductor one 150A is connected to one of the terminals of conductor four 400, and another of the terminals of conductor four 400 is connected to one of the terminals of conductor two 150B, the other weld end of conductor two 150B is crimped to one weld end of conductor two 200A, the other weld end of conductor two 150B is crimped to one weld end of conductor four 400, the other weld end of conductor four 400 is crimped to one weld end of conductor one 150A, the other weld end of conductor one 150A is crimped to one weld end of conductor three 300B, the other weld end of conductor three 300B is crimped to one weld end of conductor one 150A, the other weld end of conductor one 150A is connected to U3 wire outlet, i.e. one weld end of first conductor 200A of the bypass winding is crimped to one weld end of circumferentially adjacent conductor two 150B, one weld end of conductor four 400 of the bypass winding is crimped to one weld end of circumferentially adjacent conductor one 150A, and the other weld end of conductor four 400 is crimped around one weld end of the connecting circumferentially adjacent conductor two 150B.

Referring to FIG. 9, in a third embodiment, U1 leads are routed to one weld end of conductor three 300B, conductor three 300B is routed to one weld end of conductor one 150A, another weld end of conductor one 150A is routed to one weld end of conductor four 400, another weld end of conductor four 400 is routed to one weld end of conductor two 150B, another weld end of conductor two 150B is routed to one weld end of first conductor 200A, another weld end of first conductor 200A is routed to one weld end of conductor two 150B, another weld end of conductor two 150B is routed to one weld end of conductor four 400, another weld end of conductor four 400 is routed to one weld end of conductor one 150A, another weld end of conductor one 150A is routed to one weld end of conductor four 400, and another weld end of conductor four 400 is routed to one weld end of conductor two 150B, the other weld end of conductor two 150B is crimped around one weld end of conductor four 400, the other weld end of conductor four 400 is crimped around one weld end of conductor one 150A, the other weld end of conductor one 150A is crimped around one weld end of conductor four 400, the other weld end of conductor four 400 is crimped around one weld end of conductor two 150B, the other weld end of conductor two 150B is crimped around one weld end of conductor four 400, the other weld end of conductor four 400 is crimped around one weld end of conductor one 150A, the other weld end of conductor one 150A is connected with the U3 outlet terminal, i.e. one weld end of first conductor 200A of the leg winding is crimped around one weld end of circumferentially adjacent conductor two 150B, one weld end of conductor four 400 of the leg winding is crimped around one weld end of circumferentially adjacent conductor one 150A, and the other weld end of conductor four 400 is crimped around one weld end of the connecting circumferentially adjacent conductor two 150B.

Referring to FIG. 11, in a fourth embodiment, U1 is shown with the lead end connected to one of the bonding ends of conductor three 300B, conductor three 300B routed around one of the bonding ends of conductor one 150A, another of the bonding ends of conductor one 150A routed around one of the bonding ends of conductor four 400, another of the bonding ends of conductor four 400 routed around one of the bonding ends of conductor two 150B, another of the bonding ends of conductor two 150B routed around one of the bonding ends of first conductor 200A, another of the bonding ends of first conductor 200A routed around one of the bonding ends of conductor two 150B, another of the bonding ends of conductor two 150B routed around one of the bonding ends of conductor four 400, another of conductor four 400 routed around one of the bonding ends of conductor one 150A, another of the bonding ends of conductor one 150A routed around one of the bonding ends of conductor four 400, and another of the bonding ends of conductor four 400 routed around one of the bonding ends of conductor two 150B, the other weld end of conductor two 150B is crimped around one weld end of conductor four 400, the other weld end of conductor four 400 is crimped around one weld end of conductor one 150A, the other weld end of conductor one 150A is crimped around one weld end of conductor two 150B, the other weld end of conductor two 150B is crimped around one weld end of conductor one 150A, the other weld end of conductor one 150A is connected with U3 outlet, namely, one weld end of first conductor 200A of the bypass winding is crimped around one weld end of circumferentially adjacent conductor two 150B, one weld end of conductor four 400 of the bypass winding is crimped around one weld end of circumferentially adjacent conductor one 150A, and the other weld end of conductor four 400 is crimped around one weld end of the connecting circumferentially adjacent conductor two 150B.

With reference to fig. 5, in the first embodiment, two slot interiors of one conductor two 150B in the same magnetic pole (second magnetic pole) of the stator winding as the first conductor and the conductor three are located at the radial 5 th layer and the radial 6 th layer of the stator core, and two slot interiors of the other conductor two 150B are located at the radial 7 th layer and the radial 8 th layer of the stator core, that is, the conductor two in the same magnetic pole of the stator winding as the first conductor and the conductor three in the branch winding of each phase winding is located at the radial 5 th layer and the radial 6 th layer of the stator core, and the two slot interiors of the conductor two are located at the radial 7 th layer and the radial 8 th layer of the stator core (that is, the number of the slot interiors of the conductor is greater than 4);

with reference to fig. 7 and 9, in the second and third embodiments, two slot interiors of one conductor four 400, which is located in the same magnetic pole (second magnetic pole) of the stator winding as the first conductor and the conductor three, in one branch winding are located at the 5 th and the 6 th radial layers of the stator core, and the other conductor four 400 is located at the 7 th and the 8 th radial layers of the stator core, that is, the conductor four, which is located in the same magnetic pole of the stator winding as the first conductor and the conductor three, in the branch winding of each phase winding is located at the 5 th and the 6 th radial layers of the stator core, and the slot interiors of the conductor four are located at the 7 th and the 8 th radial layers of the stator core (that is, the number of the slot interiors of the conductor at the radial layers of the stator core is greater than 4);

with reference to fig. 11, in the fourth embodiment, two slot interiors of one conductor four 400, which is located in the same magnetic pole (second magnetic pole) of the stator winding as the first conductor and the conductor three, in one branch winding are located in the radial 5 th and 6 th layers of the stator core, two slot interiors of the other conductor two 150B are located in the radial 7 th and 8 th layers of the stator core, that is, the conductor in the same magnetic pole of the stator winding as the first conductor and the conductor three, in the branch winding of each phase winding is the conductor two and the conductor four, and the slot interiors of the conductor two and the conductor four are located in the radial 5 th and 6 th layers, the 7 th and 8 th layers of the stator core (that is, the number of slot interiors of the conductor in the radial direction of the stator core is greater than 4);

with reference to fig. 12, in the fourth embodiment, two slot interiors of one conductor four 400 of the other branch winding, which is located in the same magnetic pole (second magnetic pole) of the stator winding as the first conductor and the conductor three, are located at the radial 5 th and 6 th layers of the stator core, two slot interiors of the other conductor one 150A are located at the radial 7 th and 8 th layers of the stator core, that is, the conductor in the same magnetic pole of the stator winding as the first conductor and the conductor three, in the branch winding of each phase winding is conductor one and conductor four, and the slot interiors of the conductor one and conductor four are located at the radial 5 th and 6 th layers, 7 th and 8 th layers of the stator core (that is, the number of slot interiors of the conductor in the radial direction of the stator core is greater than 4);

with reference to fig. 14, in the first embodiment, two slot interiors of one conductor one 150A in the same magnetic pole (second magnetic pole) of the stator winding as the first conductor and the conductor three are located at the radial 5 th and 6 th layers of the stator core, and two slot interiors of the other conductor one 150A are located at the radial 7 th and 8 th layers of the stator core, that is, the conductor in the same magnetic pole of the stator winding as the first conductor and the conductor three in the branch winding of each phase winding is the first conductor, and the two slot interiors of the first conductor are located at the radial 5 th and 6 th layers, 7 th and 8 th layers of the stator core (that is, the number of the slot interiors of the conductor in the radial layers of the stator core is greater than 4);

with reference to fig. 13, the structure of the fifth embodiment is the same as that of the first embodiment, except that the stator winding of the first embodiment is in 4-branch parallel connection, the stator winding of the fifth embodiment is in 2-branch parallel connection, the fifth embodiment connects the outlet terminal U3 of the first branch winding of the 4 branch windings of the first embodiment in series with the lead terminal U7 of the third branch winding to form the first branch winding of the fifth embodiment, and connects the outlet terminal U4 of the second branch winding of the 4 branch windings of the first embodiment in series with the lead terminal U8 of the fourth branch winding to form the second branch winding of the fifth embodiment; of course, the 4 branch windings of the stator winding in the second to fourth embodiments of the present application may all form the stator winding 2 branch in the fifth embodiment and are connected in parallel, and the X in the present application is 4.

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 (8)

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 thereof;

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

the method is characterized in that: each phase winding is formed by connecting X branch windings in parallel along the circumferential direction of the stator core through a plurality of conductors, X is an even number which is more than or equal to 2, and M is an even number which is more than 4;

each branch winding at least comprises a first conductor, the interiors of two slots of the first conductor are positioned on a first layer and a fourth layer in the radial direction of the stator core, and the interiors of two slots of the other conductors except the first conductor in the branch winding are positioned on two layers adjacent to the radial direction of the stator core;

the other conductors of each branch winding comprise a first conductor, a second conductor and a fourth conductor, the two slot interiors of each conductor in the first conductor, the second conductor and the fourth conductor are respectively positioned on the Nth layer and the (N + 1) th layer in the radial direction of the stator core, wherein N is an odd number which is more than or equal to 1;

the other conductors of each branch winding further include a third conductor, the insides of two slots of the third conductor are located on the radial Y +1 th layer and the radial Y +2 th layer of the stator core, the third conductor and the first conductor are located in the same magnetic pole of the stator winding, wherein Y is 1,5, 9 and 13; the two groove interiors of the conductor three are located radially inward of the two groove interiors of the first conductor.

2. The electric machine stator of claim 1, wherein the lead-out wires of each branch winding are located at two radially spaced layers of the stator core and spaced layer-by-layer distances are less than M-1.

3. The stator according to any one of claims 1 to 2, wherein the conductor four and the first conductor in each phase winding are located in the same magnetic pole of the stator winding, and a slot inside of the conductor four and a slot inside of the first conductor are located in the same radial layer of the stator core.

4. The stator according to claim 3, wherein a pitch of said conductor four of each said branch winding is a full pitch, a pitch of said conductor one of said branch winding is a long pitch, a pitch of said conductor two of said branch winding is a short pitch, a pitch of said first conductor of said branch winding is a long pitch, and a pitch of said conductor three of said branch winding is a short pitch.

5. The stator according to claim 4, wherein one of the welding ends of the first conductor of each of the branch windings is routed to connect one of the welding ends of the second conductor which is circumferentially adjacent, and/or one of the welding ends of the fourth conductor is routed to connect one of the welding ends of the first conductor which is circumferentially adjacent, and the other welding end of the fourth conductor is routed to connect one of the welding ends of the second conductor which is circumferentially adjacent.

6. The stator according to claim 5, wherein the number of layers in the stator core in the radial direction inside two slots of the first conductor, the second conductor, and the fourth conductor in the same magnetic pole of the stator winding as the first conductor and the three conductors in the branch winding is greater than 4.

7. The stator according to claim 2, wherein the outlet terminal of the first branch winding of the X branch windings of each phase winding is connected in series with the outlet terminal of the other branch winding of the X/2+1 th branch winding of the phase winding to form X/2 parallel branch windings.

8. An electrical machine comprising an electrical machine stator according to any one of claims 1 to 7.

Images