CN113675965B

CN113675965B - Motor stator and motor

Info

Publication number: CN113675965B
Application number: CN202111044949.8A
Authority: CN
Inventors: 李久富
Original assignee: Borgwarner Powertrain Tianjin Co ltd
Current assignee: Tianjin Songzheng Auto Parts Co ltd
Priority date: 2020-12-07
Filing date: 2021-09-07
Publication date: 2023-04-18
Anticipated expiration: 2041-09-07
Also published as: CN113675965A

Abstract

The invention provides a motor stator and a motor, wherein each phase of the stator winding at least comprises a conductor group, the conductor group comprises two long-span layer conductors which radially span G layers in the inner part of a slot, G/2 of the long-span layer conductors between the radial cross layers are the same as the radial cross layer direction of the long-span layer conductors along the adjacent cross layer conductors and G/2-1 of the long-span layer conductors in the opposite direction of the radial cross layer direction of the long-span layer conductors, G is more than or equal to 4 and less than or equal to M; the two slots of the other conductors except the long span layer conductor in the phase winding are positioned at two circumferentially adjacent layers of the stator core. 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 invention relates to the field of motors, in particular to a motor stator and a 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 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.

Disclosure of Invention

The invention mainly aims to provide a motor stator and a motor, wherein a gap bridge wire is omitted, heat dissipation is uniform, power and torque are improved, a wiring mode is simplified, a process is simplified, and machining efficiency is improved.

To achieve the above object, according to one aspect of the present invention, there is provided a stator of an electric motor, 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 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;

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

each phase of winding at least comprises a conductor group, the conductor group comprises two long-span layer conductors which radially span G layers in the groove, G/2 of the long-span layer conductors between the radial cross layers are same as the long-span layer conductors in the radial cross layer direction, G/2-1 of the long-span layer conductors in the clockwise direction are opposite to the long-span layer conductors in the radial cross layer direction, G is more than or equal to 4, and is less than or equal to M;

the two slots of the other conductors except the long span layer conductor in the phase winding are positioned at two circumferentially adjacent layers of the stator core.

Further, in one conductor group, the inner parts of the outermost side groove of the two grooves of the outermost side along the radial direction of the stator core and the innermost side groove of the two grooves of the innermost side along the radial direction of the adjacent cross-layer conductor are respectively positioned at the inner sides in the circumferential direction of the inner parts of the two grooves of the long cross-layer conductor and the grooves of the same layer of the long cross-layer conductor;

when M is equal to 4, the inner parts of the other one of the two slots of the outermost clockwise adjacent cross-layer conductor and the other one of the two slots of the innermost clockwise adjacent cross-layer conductor are respectively positioned at the circumferential adjacent sides of the inner parts of the two slots of one anti-adjacent cross-layer conductor and the slot of the same layer of the anti-adjacent cross-layer conductor;

when M is larger than 4, the inner part of the other groove in the two grooves of the outmost side along the adjacent cross-layer conductor, the inner part of the other groove in the two grooves of the innermost side along the adjacent cross-layer conductor and the inner parts of the other two grooves of the other side along the adjacent cross-layer conductor are respectively positioned on the two adjacent sides of the plurality of reverse adjacent cross-layer conductors in the circumferential direction with the inner parts of the same-layer grooves.

Further, each phase of winding further comprises a transition adjacent cross-layer conductor, the transition adjacent cross-layer conductor is the same as the radial cross-layer direction of the adjacent cross-layer conductor, the positions of the two groove interiors of the conductors in the conductor group are removed, every two transition adjacent cross-layer conductors are grouped into one group, the circumferential directions of the two groove interiors of the head part of each group of transition adjacent cross-layer conductor are adjacent, and the circumferential directions of the two groove interiors of the tail part of each group of transition adjacent cross-layer conductor are adjacent.

Further, when G is equal to M, the magnetic pole where each long-span layer conductor is located contains a conductor group, and the long-span layer conductor is located on the first layer and the Mth layer of the stator core in the radial direction in the two slots.

Further, when M is an even number of 4 greater than 4 and G is smaller than M, the magnetic pole where each long-span layer conductor is located includes at least 1 conductor group, and the long-span layer conductor is located on the radial 1 st layer and the G th layer of the stator core in the two slots, and/or the long-span layer conductor is located on the radial G +1 st layer and the 2 nd layer of the stator core in the two slots.

Further, at least one adjacent in-line adjacent cross-layer conductor and/or transition adjacent cross-layer conductor is/are connected in series between the long cross-layer conductor and the reverse adjacent cross-layer conductor of each branch winding.

Further, the outlet end of the 1 st branch winding of the 4 branch windings of each phase winding is connected in series with the lead end of the 3 rd branch winding of the phase winding, and the outlet end of the 2 nd branch winding is connected in series with the lead end of the 4 th branch winding of the phase winding to form 2 parallel branch windings.

According to another aspect of the present invention, there is provided an electric machine comprising the electric machine stator described above.

The invention has the beneficial effects that:

by applying the technical scheme of the invention, the in-phase and out-phase motor stator comprises the following components:

each phase of winding is formed by adjacently connecting a plurality of conductors along the circumferential direction of the stator core in a wave winding manner to form 4 branch windings which are connected in parallel, wherein M is an even number which is more than or equal to 4;

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 are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiment(s) 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 stator of a motor according to a first embodiment of the present invention;

FIG. 2 is a schematic diagram of a phase winding of a stator winding according to one embodiment of the present invention;

FIG. 3 is a schematic diagram of a conductor structure in an embodiment of the invention;

FIG. 4 is a schematic plan view of a phase winding in a phase winding according to an embodiment of the present invention;

FIG. 5 is a schematic plane development of a phase winding according to a second embodiment of the present invention;

FIG. 6 is a schematic plane development of a branch winding in the phase winding according to the second embodiment of the present invention;

FIG. 7 is a schematic plan view of a phase winding in a third embodiment of the present invention;

fig. 8 is a schematic plan-view development of a phase winding in a fourth embodiment of the present invention;

FIG. 9 is a schematic plan view of a phase winding in a fifth embodiment of the present invention;

fig. 10 is a schematic plan view of a phase winding in a sixth embodiment of the present invention;

FIG. 11 is a schematic plan view of a branch winding in a six-phase winding according to an embodiment of the present invention;

fig. 12 is a schematic plan-view development of a phase winding in the seventh embodiment of the present invention;

fig. 13 is a schematic plane development view of one branch winding in the phase winding in the seventh embodiment of the present invention;

fig. 14 is a schematic plan view of a phase winding in an eighth embodiment of the present invention;

FIG. 15 is a schematic plane development of a branch winding in an eight-phase winding according to an embodiment of the present invention;

fig. 16 is a schematic plan view of a phase winding in accordance with the ninth embodiment of the present invention;

fig. 17 is a schematic plan view of a branch winding in the phase winding according to the ninth embodiment of the present invention;

FIG. 18 is a schematic plan view of a phase winding in a tenth embodiment of the invention;

FIG. 19 is a schematic plan view of a branch winding in a ten-phase winding according to an embodiment of the present invention;

FIG. 20 is a schematic plan view of a phase winding in an eleventh phase of an embodiment of the present invention;

FIG. 21 is a schematic plan view of a branch winding in an eleventh phase winding according to an embodiment of the present invention;

fig. 22 is a schematic plan development view of a phase winding in the twelfth embodiment of the invention;

fig. 23 is a schematic plan development view of one branch winding in the twelve phase windings according to the embodiment of the present invention;

fig. 24 is a schematic plan view showing the development of a phase winding in the thirteenth embodiment of the invention;

FIG. 25 is a schematic plan view of a phase winding in a fourteenth embodiment of the invention;

FIG. 26 is a schematic plan view of a branch winding in a fourteenth phase winding according to an embodiment of the present invention;

fig. 27 is a schematic plan view of a phase winding in a fifteenth embodiment of the invention;

FIG. 28 is a schematic plan view of a branch winding in a fifteen phase winding in accordance with an embodiment of the invention;

fig. 29 is a schematic plan development view of a phase winding according to a sixteen embodiment of the present invention.

Wherein:

200. the full-pitch long-span conductor, 200A, 400, full-pitch along-adjacent-span conductors, 400B, short-pitch along-adjacent-span conductors, 401, outermost along-adjacent-span conductors, 402, innermost along-adjacent-span conductors, 300, full-pitch reverse-adjacent-span conductors, 300A, long-pitch reverse-adjacent-span conductors, 300B, short-pitch reverse-adjacent-span conductors, 150, full-pitch transition adjacent-span conductors, 150A, long-pitch transition adjacent-span conductors, 150B, short-pitch transition adjacent-span conductors, 10, a stator winding, 20, a stator core, 21, and an iron core slot.

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 structures related to the present invention are shown in the drawings, not all of them.

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 used for limiting a specific order. The following embodiments of the present invention may be implemented individually, or may be implemented in combination with each other, and the embodiments of the present invention are not limited in this respect.

The invention 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; note that in the present 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, or may be the first layer in the direction close to the central axis of the stator core; referring to fig. 3, each conductor includes a welding end 503, an inside 501, a plug terminal 502, an inside 501 and a welding end 503 which are sequentially connected end to end, the two insides are located in two slots of the stator core circumferentially spaced by a specified slot distance, the plug terminal is located at one end outside the axial slot of the stator core and connected with the two insides, the two welding ends are located outside the stator core and connected with the two insides, the ends far away from the plug terminal are opposite in extending direction, and the two welding ends are located on the same layer corresponding to the two insides.

As shown in fig. 1, an embodiment of the present invention provides a stator of an electric motor, 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 29, the stator winding 10, which includes a plurality of phase windings mounted on the stator core so as to be different from each other in electrical phase and form an even number of layers in the stator core radial direction, forms M layers in the stator core radial direction for the phase windings (U-phase winding or V-phase winding or W-phase winding) in the present embodiment; the even number of M 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 29, in the present embodiment, a stator winding is mounted on a stator core, that is, a plurality of phase windings are mounted on the stator core so as to be different from each other in electrical phase, wherein the stator winding 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 are provided for each pole of the rotor, 2 slots per pole per phase in this embodiment, eight poles, and so on for each phase of the three-phase stator winding, the number of slots provided in the stator core equals 48 (i.e., 2X8X 3), the pole pitch = number of phases per pole per phase slot per stator winding, the conductors with a pitch less than the pole pitch are short-pitch conductors, the conductors with a pitch equal to the pole pitch are full-pitch conductors, the conductors with a pitch greater than the pole pitch are long-pitch conductors, in this embodiment, the pole pitch =2x3=6; in addition, in the present embodiment, the stator core is formed by stacking a plurality of annular magnetic steel plates to form two end faces in the axial direction of the stator core, and the stator core is defined by two adjacent slots, and other conventional metal plates may be used instead of the magnetic steel plates.

With reference to fig. 4 to 24, in the first to thirteenth embodiments, 200A and 200 b are long-span layer conductors, two slot interiors of the long-span layer conductors are located in the first radial-span layer and the mth layer of the stator core, where G = M, and two slot interiors of the remaining conductors in the phase winding except for the long-span layer conductors are located in two circumferentially adjacent layers of the stator core;

the conductor set of each phase winding comprises a long cross-layer conductor 200A (200), G/2 clockwise adjacent cross-layer conductors 400 (400A, 400B) which are arranged between the radial cross-layers of the long cross-layer conductors and have the same direction as the radial cross-layer direction of the long cross-layer conductors, and G/2-1 anti-clockwise adjacent cross-layer conductors 300 (300A, 300B) which are opposite to the radial cross-layer direction of the long cross-layer conductors. When M is 4, G =4, the number of sequentially adjacent cross-layer conductors is 2, the number of reversely adjacent cross-layer conductors is 1, when M is 6, G =6, the number of sequentially adjacent cross-layer conductors is 3, the number of reversely adjacent cross-layer conductors is 2, when M is 8, G =8, the number of sequentially adjacent cross-layer conductors is 4, and the number of reversely adjacent cross-layer conductors is 3.

With reference to fig. 5 and 6, in the first and second embodiments, M =4, the seventh slot located in the fourth layer, the fourteenth slot in the first layer, G =4= M, 2 consecutive cross-layer conductors 400B in the same direction as the radial cross-layer direction of the long cross-layer conductor, between the radial cross-layers of the conductor group, located in the fourth layer, the eighth slot located in the fourth layer, inside the outermost slot of the consecutive cross-layer conductor 401, the thirteenth slot located in the first layer, inside the innermost slot of the two slots of the innermost consecutive cross-layer conductor 402, located circumferentially inward of the two slots of the long cross-layer conductor 200A, the seventh groove of the second layer and the fourteenth groove of the third layer are located inside the grooves of the two grooves of the opposite adjacent cross-layer conductor 300A, the number of conductor groups in the first embodiment is 1, the number of conductor groups in the second embodiment is 4, a magnetic pole where each long cross-layer conductor is located contains one conductor group, the grooves of the rest positions of the phase winding are adjacent cross-layer conductors 150A and 150B in a transition manner, one conductor group of the adjacent cross-layer conductor 150A and one conductor group of the adjacent cross-layer conductor 150B in a transition manner, the two grooves of the adjacent cross-layer conductor in each transition manner are circumferentially adjacent, and the grooves of the tail portion are circumferentially adjacent. Namely, the insides of two grooves of the outmost adjacent cross-layer conductor and the innermost adjacent cross-layer conductor are positioned at the inner circumferential sides of the insides of the two grooves of the long cross-layer conductor;

the other two slots of the outmost side along the adjacent cross-layer conductor and the innermost side along the adjacent cross-layer conductor in the radial direction of the stator core are positioned on the adjacent sides in the circumferential direction of the two slots of the opposite adjacent cross-layer conductor.

In connection with fig. 7, an embodiment of three M =6, 3 consecutive cross-layer conductors 400B in the same direction as the radial cross-layer direction of the long cross-layer conductor among the two slots of the long cross-layer conductor 200A in the conductor group, the sixth eighth slot in the sixth layer in the slot of the outermost slot of the two slots of the consecutive cross-layer conductor 401 in the outermost radial direction, the thirteenth slot in the first layer in the slot of the innermost slot of the two slots of the consecutive cross-layer conductor 402 in the innermost radial cross-layer conductor, the seventh slot in the second layer in the two slots of the long cross-layer conductor 200A in the circumferential direction, the eighth slot in the fourth layer in the two slots of the other consecutive cross-layer conductors, the thirteenth slot in the third layer, and the seventh slot in the second layer in the two slots of the 2 inverse consecutive cross-layer conductor 300A, the adjacent cross-layer conductor 150A and the adjacent cross-layer conductor 150B of a transition are in a group, the two grooves of the adjacent cross-layer conductor of each group are circumferentially adjacent, and the two grooves of the adjacent cross-layer conductor of each transition are circumferentially adjacent at the head of the tail.

With reference to fig. 8, in an embodiment of four M =8, 4 consecutive cross-layer conductors 400B in the same radial cross-layer direction as the long cross-layer conductor among the two slots of the long cross-layer conductor 200A in the conductor group, a fourteenth slot in the first layer, G =8, between the radial cross-layers thereof, an eighth slot in the eighth layer, an thirteenth slot in the first layer, an innermost slot in the innermost slot of the two slots of the consecutive cross-layer conductor 401, a thirteenth slot in the first layer, an eighth slot in the fourth layer, a thirteenth slot in the third layer, an eighth slot in the sixth layer, and a thirteenth slot in the fifth layer, are located inside the two slots of the long cross-layer conductor 200A in the circumferential direction, the inner parts of the two grooves of the 3 reversely adjacent cross-layer conductors 300A are respectively positioned in a seventh groove of a second layer, a fourteenth groove of a third layer and a seventh groove of a fourth layer, a fourteenth groove of a fifth layer and a seventh groove of a sixth layer, a fourteenth groove of a seventh layer, a seventh groove of a seventh layer, a thirteenth groove of a seventh layer, an eighth groove of a second layer and two grooves of other adjacent cross-layer conductors positioned in the opposite direction, wherein the outermost adjacent cross-layer conductors are positioned in the seventh groove of the two grooves of the opposite adjacent cross-layer conductors, the number of conductor groups in the embodiment is 4, a magnetic pole in which each long-span layer conductor is positioned comprises one conductor group, the rest grooves of the phase winding are adjacent cross-layer conductors 150A and 150B in transition, one of the adjacent cross-layer conductors 150A in transition and one of the adjacent cross-layer conductors 150B in transition are in a group, the head of the adjacent cross-layer conductors in the transition of each group is positioned in the circumferential direction, and the two grooves in the tail are adjacent in the circumferential direction.

With reference to fig. 6, in the second embodiment, the U2 lead end of the branch winding is connected to one welding end of the long span layer conductor 200A, one welding end of the long span layer conductor 200A is connected to one welding end of the circumferentially adjacent transition adjacent span layer conductor 150B in a wave winding manner, the other welding end of the transition adjacent span layer conductor 150B is connected to one welding end of the circumferentially adjacent reverse adjacent span layer conductor 300A in a wave winding manner, the other welding end of the reverse adjacent span layer conductor 300A is connected to one welding end of the transition adjacent span layer conductor 150B in a wave winding manner, the other welding end of the transition adjacent span layer conductor 150B is connected to one welding end of the circumferentially adjacent span layer conductor 200A in a wave winding manner, and the other welding end of the long span layer conductor 200A is connected to another welding end of the transition adjacent span layer conductor 150B in a wave winding manner, and the other welding end of the U2 lead end of the transition adjacent span layer conductor 150B is connected to another welding end of the U4.

Fig. 4 to 13, 19 and 24 to 29 are in phase, and fig. 14 to 18 and 20 to 23 are out of phase, wherein pitches of the long cross-layer conductor of the sixth embodiment to the twelfth embodiment, the clockwise adjacent cross-layer conductor, the counterclockwise adjacent cross-layer conductor and the transitional adjacent cross-layer conductor are different from those of the first embodiment to the fifth embodiment, but the conductor set and the phase winding are formed in the same manner. 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.

With reference to fig. 25, in the fourteenth embodiment M =8, the seventh slot of the fourth layer, the fourteenth slot of the first layer, G =4, 2 consecutive cross-layer conductors 400 in the same direction as the radial cross-layer direction of the long-span conductor between the radial cross-layers thereof, the eighth slot of the fourth layer, the fourteenth slot of the third layer, located inside the two slots of the outermost consecutive cross-layer conductor 401, the seventh slot of the second layer, the thirteenth slot of the first layer, located inside the two slots of the innermost consecutive cross-layer conductor 402, the eighth slot of the second layer, the thirteenth slot of the third layer, located inside the two slots of the long-span conductor 200A in the circumferential direction, and the eighth slot of the second layer, the thirteenth slot of the third layer, located inside the two slots of the 1 consecutive cross-layer conductor 300B in the radial cross-layer direction thereof, two groove insides of the other two grooves of the outmost forward adjacent cross-layer conductor and the innermost forward adjacent cross-layer conductor are positioned on the circumferential adjacent sides of the two groove insides of the reverse adjacent cross-layer conductor, in the example, the number of the conductor groups is 4, G is smaller than M, at least 1 conductor group, in the example, 1 conductor group is arranged in the magnetic pole where each long cross-layer conductor is positioned, in the two groove insides, of the 1 st layer and the G th layer in the radial direction of the stator core, namely, the first layer, and the rest position grooves of the 4 th layer phase winding are transition adjacent cross-layer conductors 150A and 150B, wherein one transition adjacent cross-layer conductor 150A and one transition adjacent cross-layer conductor 150B are in a group, the head parts of the two groove insides of each group of transition adjacent cross-layer conductors are circumferentially adjacent, and the two groove insides of the tail parts are circumferentially adjacent.

Referring to fig. 26, a reverse adjacent cross-layer conductor 300B, a transition adjacent cross-layer conductor 150A, a transition adjacent cross-layer conductor 400, a transition adjacent cross-layer conductor 150B, a long cross-layer conductor 200A, a transition adjacent cross-layer conductor 150B, a transition adjacent cross-layer conductor 400, a transition adjacent cross-layer conductor 150A, a transition adjacent cross-layer conductor 150B, a transition adjacent cross-layer conductor 150A, a transition adjacent cross-layer conductor 150B, and a transition adjacent cross-layer conductor 150A are sequentially connected in series between a lead terminal U1 and a lead terminal U3 of the branch winding.

With reference to fig. 27, in a fifteenth embodiment, where M =8, in the first conductor group, each long-span layer conductor 200A is located inside a seventh slot of the fourth layer inside a slot of two slots, where the first, fourteenth slot is located in the fourth layer, G =4, where G is smaller than M, and each long-span layer conductor is located in a magnetic pole containing 2 conductor groups, where the long-span layer conductor is located inside two slots at the 1 st layer, the G th layer, (1 st layer, 4 th layer), 2 consecutive cross-layer conductors 400 having the same direction as the radial cross-layer direction of the long-span layer conductor between the radial cross-layer conductors, the outermost consecutive cross-layer conductor 401 is located inside a eighth slot of the fourth layer inside a slot of two slots, the fourteenth slot of the third layer, the innermost consecutive cross-layer conductor 402 is located inside a seventh slot of the second layer, the first layer is located inside a slot of two slots of the long-span layer conductor 200A, and 1 anti-phase neighboring conductor 300B is located inside a slot of the second layer, and the innermost consecutive cross-layer conductor is located inside a slot of the second layer, and the outermost consecutive cross-layer conductor 200B;

and the long-span layer conductor is positioned at the G +1 th layer, the 2G th layer, (the 5 th layer and the 8 th layer) of the radial direction of the stator core in the two slots. The groove inner parts of two grooves of the long span layer conductor 200A in the conductor group II are located in a fifth layer fourteenth groove, an eighth layer seventh groove, 2 adjacent layer crossing conductors 400 which are the same with the long span layer conductor in the radial layer crossing direction are arranged between the radial layers of the groove inner parts of the two grooves of the long span layer conductor 200A, the outermost side of the groove inner parts of the two grooves of the adjacent layer crossing conductor 401 is located in an eighth layer eighth groove, the seventh layer fourteenth groove, the innermost side of the groove inner parts of the two grooves of the adjacent layer crossing conductor 402 is located in a sixth layer seventh groove, the fifth layer thirteenth groove is located in the circumferential inner side of the two grooves of the long span layer conductor 200A, the groove inner parts of the two grooves of the 1 reverse adjacent layer crossing conductor 300B are respectively located in a sixth layer eighth groove, the seventh layer thirteenth groove, the outermost side of the groove inner side of the two grooves of the forward adjacent layer crossing conductor and the innermost side of the other two grooves of the adjacent layer crossing conductor are located in the circumferential inner side of the reverse adjacent layer conductor.

In the fifteenth embodiment, M is an even number of 4 greater than 4, and G is less than M, the slots at the remaining positions of the phase winding are transition adjacent cross-layer conductors 150a,150b, one transition adjacent cross-layer conductor 150A and one transition adjacent cross-layer conductor 150B are in one group, the two slots at the head of each group of transition adjacent cross-layer conductors are circumferentially adjacent, and the two slots at the tail are circumferentially adjacent. 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.

Referring to fig. 28, a reverse adjacent cross-layer conductor 300B, a transition adjacent cross-layer conductor 150A, a forward adjacent cross-layer conductor 400, a transition adjacent cross-layer conductor 150B, a long cross-layer conductor 200A, a transition adjacent cross-layer conductor 150B, a forward adjacent cross-layer conductor 400, a transition adjacent cross-layer conductor 150A, a forward adjacent cross-layer conductor 400, a transition adjacent cross-layer conductor 150B, a transition adjacent cross-layer conductor 150A, a transition adjacent cross-layer conductor 150B, a long cross-layer conductor 200A, a transition adjacent cross-layer conductor 150B, a forward adjacent cross-layer conductor 400, a transition adjacent cross-layer conductor 150A, a reverse adjacent cross-layer conductor 300B, and a transition adjacent cross-layer conductor 150A are sequentially connected in series between a lead terminal U1 and a lead terminal U3 of the branch winding.

Namely, at least one adjacent forward adjacent cross-layer conductor and/or transition adjacent cross-layer conductor is/are connected in series between the long cross-layer conductor and the reverse adjacent cross-layer conductor of each branch winding.

With reference to fig. 9, the structure of the fifth embodiment is the same as that of the first embodiment, fig. 24 is the same as that of the seventh embodiment, fig. 29 is the same as that of the sixteenth embodiment, and the difference is that the stator winding of the first embodiment or the seventh embodiment or the fourteenth embodiment is in 4-branch parallel connection, in the fifth embodiment or the thirteenth embodiment or the sixteenth embodiment, the stator winding is in 2-branch parallel connection, the outlet terminal U3 of the first branch winding of the 4-branch winding is connected in series with the lead terminal U7 of the third branch winding to form a first branch winding, and the outlet terminal U4 of the second branch winding of the 4-branch winding is connected in series with the lead terminal U8 of the fourth branch winding to form a second branch winding; of course, the 4 branch windings of the stator winding of the other embodiments of the present application may all form the stator winding 2 branch parallel connection in embodiment five or in embodiment thirteen or in embodiment sixteen. 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.

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

The motor provided by the embodiment of the present invention includes the motor stator in the above embodiment, and therefore, the motor provided by the embodiment of the present invention also has the beneficial effects described in the above embodiment, and details are not described herein again.

In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection may be mechanical or electrical, may be direct, may be indirect via an intermediate medium (a bridge wire connection), or may be a communication between two elements. Those skilled in the art will understand what is specifically meant by the present invention. Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention and the technical principles applied thereto.

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

Claims

1. An electric machine stator, in-phase and out-of-phase comprising:

the method is characterized in that:

the insides of two slots of the other conductors except the long span layer conductor in the phase winding are positioned at two adjacent layers of the stator core in the circumferential direction,

in one conductor group, the inner parts of the outermost side groove of the two grooves of the outermost side along the adjacent cross-layer conductor and the innermost side groove of the two grooves of the innermost side along the adjacent cross-layer conductor in the radial direction of the stator core are respectively positioned at the inner circumferential sides of the two grooves of the long cross-layer conductor and the inner circumferential sides of the grooves of the same layer of the long cross-layer conductor;

when M is equal to 4, the inner parts of the other one of the two slots of the outmost forward adjacent cross-layer conductor and the other one of the two slots of the innermost forward adjacent cross-layer conductor are respectively positioned on the circumferential adjacent sides of the inner parts of the two slots of one reverse adjacent cross-layer conductor and the slots on the same layer;

2. The machine stator of claim 1, wherein each phase winding further comprises transition adjacent cross-layer conductors, each of the transition adjacent cross-layer conductors having a same radial cross-layer direction as the adjacent cross-layer conductor, and having two slot interiors at positions inside the slots excluding the conductors in the conductor set, and each of the transition adjacent cross-layer conductors being grouped in pairs, with the two slot interiors at the head of each group of transition adjacent cross-layer conductors being circumferentially adjacent and the two slot interiors at the tail being circumferentially adjacent.

3. An electric machine stator according to claim 1 or 2, characterized in that when G equals M, each long-span layer conductor is located in a magnetic pole containing a conductor group, and the long-span layer conductor is located in the first layer and the M-th layer in the radial direction of the stator core inside two slots.

4. The motor stator according to claim 1 or 2, wherein when M is an even number greater than 4 and G is smaller than M, each long-span layer conductor is located in a magnetic pole including at least 1 conductor group, and the long-span layer conductor is located on the 1 st layer and the G th layer in the radial direction of the stator core inside two slots, and/or the long-span layer conductor is located on the G +1 st layer and the 2 nd layer in the radial direction of the stator core inside two slots.

5. The electric machine stator according to claim 1 or 2, characterized in that at least one adjacent forward adjacent cross-layer conductor and/or transition adjacent cross-layer conductor is connected in series between the long cross-layer conductor and the reverse adjacent cross-layer conductor of each branch winding.

6. The stator according to claim 1 or 2, wherein the outlet terminal of the 1 st branch winding of the 4 branch windings of each phase winding is connected in series with the lead terminal of the 3 rd branch winding of the phase winding, and the outlet terminal of the 2 nd branch winding is connected in series with the lead terminal of the 4 th branch winding of the phase winding to form 2 parallel branch windings.

7. An electrical machine comprising an electrical machine stator according to claim 1 or 2.