CN212627374U - Flat wire vertical winding motor winding, motor stator and flat wire vertical winding motor - Google Patents

Abstract

The utility model provides a flat wire is found around motor winding, motor stator and flat wire are found around the motor, and the flat wire is found around every looks of motor winding and is found around coil group including M and coil unit, and every is found around coil unit and includes: the winding device comprises a wire inlet end, a winding part and a wire outlet end; the wire inlet end and/or the wire outlet end are/is formed by the coil conductor along the radial direction, and the winding part is formed by the coil conductor along the circumferential direction; the winding part comprises N vertical winding coils and N-1 overlines, N is more than or equal to 2, N is the number of slots/3/N of the stator core, N is the number of parallel branches of the flat wire vertical winding motor winding, and N is more than 2; a crossover is formed between the two vertically wound coils. Use the flat wire that this application provided to immediately wind motor winding can reduce stator axial occupation space, reduces the use that the copper bar converges, can concentrate the setting with the welding point, has reduced the hourglass and has welded the risk, has reduced manufacturing cost.

Description

Flat wire vertical winding motor winding, motor stator and flat wire vertical winding motor

Technical Field

The embodiment of the utility model provides a relate to motor technical field, especially relate to a flat wire is immediately around motor winding, motor stator and flat wire are immediately around motor.

Background

With the continuous development of new energy automobile technology, the motor is used as one of the core parts of the automobile, the related requirements are higher and higher, and particularly in the field of new energy passenger vehicles, the requirements on the motor are relatively more strict under the condition of limited space. Therefore, how to maximize torque and power density by fully utilizing the limited space becomes a difficult point and a challenge in designing the motor.

At present, a bus bar structure is widely adopted in a motor stator winding used in a hybrid power market, the size of the end part of the winding is increased in a limited space, the local height of a three-phase wire inlet part of a stator is increased, the total height of the whole stator is further increased, and finally the utilization rate of an effective space is reduced; the bus bar also has the defects of more welding spots and unreliability; in addition, the use of the bus bar structure also increases the cost of the motor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a flat wire is found around motor winding, motor stator and flat wire are found around the motor, has reduced stator axial occupation space, has reduced the use that the copper bar converges, can concentrate the welding point and set up, has reduced the hourglass and has welded the risk, has reduced manufacturing cost.

The embodiment of the utility model provides a flat wire vertical winding motor winding, which comprises a three-phase vertical winding coil group; each phase of the vertical winding coil group comprises M vertical winding coil units, M is more than or equal to 2 and is an integer;

wherein each of the vertically wound coil units includes: the winding device comprises a wire inlet end, a winding part and a wire outlet end;

the wire inlet end and/or the wire outlet end are/is formed by a coil conductor along the radial direction, and the winding part is formed by the coil conductor along the circumferential direction;

the winding part comprises N vertical winding coils and N-1 overlines, N is more than or equal to 2, N is the number of slots/3/N of the stator core, N is the number of parallel branches of the flat wire vertical winding motor winding, and N is more than 2; and one crossover is formed between the two vertically wound coils.

Furthermore, the vertical winding coil unit radially extends into the stator core through the coil conductor to form the wire inlet end, circumferentially enters the slot of the stator core to wind the tooth part of the stator core according to a preset rule to form the winding part, and then circumferentially extends to form the wire outlet end;

or the vertically wound coil unit radially extends into the stator core through the coil conductor to form the wire inlet end, circumferentially enters the groove of the stator core, winds the tooth part of the stator core according to a preset rule to form the winding part, and radially extends to form the wire outlet end;

or the vertically wound coil unit extends into the stator core along the circumferential direction through the coil conductor to form the wire inlet end, enters the groove of the stator core along the circumferential direction, winds the tooth part of the stator core according to a preset rule to form the winding part, and then extends out along the radial direction to form the wire outlet end.

Further, the preset rule is that the coil conductor winds one tooth part of the stator core to form a1 st vertical winding coil, and winds the other tooth part of the stator core at a preset distance to form a2 nd vertical winding coil until an Nth vertical winding coil is formed;

wherein, the preset distance is 2Q, Q is a constant and is not less than 1, and Q is an integer.

Further, the coil conductor forming the vertically wound coil unit is a flat wire.

Further, the flying lead is disposed axially outside the edgewise coil.

Furthermore, each of the vertically wound coils includes a plurality of first in-slot portions, a plurality of second in-slot portions, and a plurality of turn portions, and the plurality of first in-slot portions and the plurality of second in-slot portions are disposed in two adjacent slots of the stator core;

and the turning radius R of the turning part is (2 x t + w + x)/2, wherein R is the turning radius of the turning part, t is the thickness of the insulating paper, w is the width of the tooth part, and x is the variable of the gap between the inside of the groove and the tooth part.

Furthermore, the wire inlet end is connected with a phase outgoing wire, and the wire outlet end is connected with a neutral point; or the wire inlet end is connected with a neutral point, and the wire outlet end is connected with a phase outgoing wire.

The embodiment of the utility model provides a still provide a motor stator, include: the stator core and the flat wire vertical winding motor winding of any embodiment;

the stator core is of an integrated structure and comprises P tooth parts; the P tooth parts extend towards the inner side in the radial direction and are uniformly distributed along the circumferential direction, two adjacent tooth parts form a groove, the number of the grooves is P, P is a multiple of 3, and P is an integer;

the flat wire vertical winding motor winding is formed by winding a coil conductor around the tooth part according to a preset rule.

Further, the stator core further comprises a plurality of T-shaped slot wedges, and the T-shaped slot wedges are arranged between two adjacent vertical winding coils in the same slot.

The embodiment of the utility model provides a flat wire is immediately around motor still is provided, a serial communication port, including above-mentioned arbitrary embodiment motor stator.

The utility model discloses flat wire among the technical scheme stands every looks of winding motor winding and stands around coil assembly and include that M stands around the coil unit immediately, and every stands around the coil unit and includes: the winding device comprises a wire inlet end, a winding part and a wire outlet end; the wire inlet end and/or the wire outlet end are/is formed by the coil conductor along the radial direction, and the winding part is formed by the coil conductor along the circumferential direction; the winding part comprises N vertical winding coils and N-1 overlines, N is more than or equal to 2, N is the number of slots/3/N of the stator core, N is the number of parallel branches of the flat wire vertical winding motor winding, and N is more than 2; a crossover is formed between the two vertically wound coils. Use the flat wire that this application provided to immediately wind motor winding can reduce stator axial occupation space, reduces the use that the copper bar converges, can concentrate the setting with the welding point, has reduced the hourglass and has welded the risk, has reduced manufacturing cost.

Drawings

Fig. 1 is a structural diagram of a motor stator according to an embodiment of the present invention;

fig. 2 is a structural diagram of a motor stator with five parallel branches according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a one-phase motor winding of a motor stator with five parallel branches according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a positive rotation vertical winding coil unit in a motor stator with five parallel branches according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a counter-rotating vertical winding coil unit in a motor stator with five parallel branches according to an embodiment of the present invention;

fig. 6 is a schematic diagram of an edgewise coil provided by an embodiment of the present invention;

fig. 7 is a schematic view of a T-shaped slot wedge provided by 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.

The utility model provides a flat wire is immediately around motor winding. Fig. 1 is a structural diagram of a motor stator according to an embodiment of the present invention. Fig. 2 is a structural diagram of a motor stator with five parallel branches according to an embodiment of the present invention; fig. 3 is a schematic structural diagram of a one-phase motor winding of a motor stator with five parallel branches according to an embodiment of the present invention; fig. 4 is a schematic diagram of a positive rotation vertical winding coil unit in a motor stator with five parallel branches according to an embodiment of the present invention; fig. 5 is a schematic diagram of a counter-rotating vertical winding coil unit in a motor stator with five parallel branches according to an embodiment of the present invention.

With reference to fig. 1-5, the flat-wire edgewise-wound motor winding 200 includes a three-phase edgewise-wound coil assembly 201; specifically, three phases refer to a U phase, a V phase and a W phase, each phase of the vertically wound coil group 201 includes M vertically wound coil units 300, M is greater than or equal to 2, and M is an integer; wherein each of the vertically wound coil units 300 includes: a wire inlet end 301, a winding portion 302, and a wire outlet end 303; the wire inlet end 301 and/or the wire outlet end 303 are formed by a coil conductor in the radial direction, and the winding portion 302 is formed by a coil conductor in the circumferential direction; fig. 1 shows, by way of example, two radially extending directions O1O2 and O1O3, a circumferential direction of extension A1a2 and an axial direction of extension B1B 2.

The stator of the motor in fig. 2 and 3 has five parallel branches, so that each phase of the vertically wound coil group 201 includes five vertically wound coil units 300, i.e., U1, U2, U3, U4 and U5 labeled in fig. 2; v1, V2, V3, V4, V5; w1, W2, W3, W4, W5, namely 301-U1, 301-U2, 301-U3, 301-U4, 301-U5, which are marked in the schematic diagram of phase U in FIG. 3; 303-U1, 303-U2, 303-U3, 303-U4, 303-U5.

The winding part 302 comprises N vertically wound coils 401 and N-1 overlines 402, wherein N is more than or equal to 2, N is the number of slots/3/N of the stator core, N is the number of parallel branches of the flat wire vertically wound motor winding 200, and N is more than 2; a flying lead 402 is formed between the two vertically wound coils 401.

As shown in fig. 1 to 3, the wire inlet end 301 of the vertically wound coil unit 300 extends into the stator core in a radial direction and a direction pointing to the center of the circle, and then enters the slots of the stator core in a circumferential direction to form a winding portion 302. Referring to fig. 2, the three-phase wire inlet end 301, i.e., U1, V3, and W5, indicated in fig. 2 may enter the stator core in a direction in which the coil conductors are "standing" like the other phases in fig. 2, in addition to entering the stator core in a direction in which the coil conductors are flat as shown in fig. 2.

In the embodiment of the present invention, the wire inlet end and/or the wire outlet end of the vertical winding coil unit 300 radially extend into the stator core, so that the axial space occupied by the stator is greatly reduced; the use that the copper bar converged has been reduced, can concentrate the welding point and set up, reduced the hourglass and welded the risk, reduced manufacturing cost.

Optionally, the vertically wound coil unit 300 radially extends into the stator core through the coil conductor to form a wire inlet end 301, and circumferentially enters the slot of the stator core to wind the tooth portion of the stator core according to a preset rule to form a winding portion 302, and then circumferentially extends to form a wire outlet end 303;

or, the vertical winding coil unit 300 radially extends into the stator core through the coil conductor to form a wire inlet end 301, circumferentially enters the slot of the stator core to wind the tooth part of the stator core according to a preset rule to form a winding part 302, and radially extends to form a wire outlet end 303;

or, the vertical winding coil unit 300 extends into the stator core along the circumferential direction through the coil conductor to form a wire inlet end 301, and enters the slot of the stator core along the circumferential direction to wind the tooth of the stator core according to a preset rule to form a winding part 302, and then extends out along the radial direction to form a wire outlet end 303.

Specifically, at least one of the wire inlet end 301 and the wire outlet end 303 of the vertically wound coil unit 300 radially extends into the slots of the stator core, as shown in fig. 1 to 3, which schematically illustrate the wire inlet end 301 radially extending into the slots of the stator core.

Optionally, the preset rule is that the coil conductor winds one tooth part of the stator core to form a1 st vertical winding coil, and winds another tooth part of the stator core at a preset distance to form a2 nd vertical winding coil until an nth vertical winding coil is formed; wherein, the preset distance is 2Q, Q is a constant and is not less than 1, and Q is an integer.

Specifically, as shown in fig. 3, each of the edgewise coil units 300 winds one tooth 101 from a coil conductor to form a1 st edgewise coil 301, winds the other tooth 101 at a predetermined distance to form a2 nd edgewise coil 301, and winds the teeth 101 at the predetermined distance in succession based on the above rule until the nth edgewise coil 301 is formed, thereby completing the winding of one edgewise coil unit 300.

The pole pitch refers to the number of slots of the stator core divided by the number of poles, and for example, when the number of slots of the stator core shown in fig. 3 is 30 and the number of poles is 20, the pole pitch is 30/20, which is 1.5. If the number of parallel branches of edgewise motor winding 200 is 5, the distance between flying leads 402 of edgewise coil unit 300 is 6 or 4, specifically, when the winding direction of edgewise coil 401 in edgewise coil unit 300 is the same as the forming direction of flying leads 402, edgewise coil unit 300 is forward-wound edgewise coil unit 400, as shown in fig. 4, it is forward-wound edgewise coil unit 400, and the distance between flying leads 402 of forward-wound edgewise coil unit 400 is 6; when the winding direction of the edgewise coil 401 in the edgewise coil unit 300 is opposite to the forming direction of the crossover 402, the edgewise coil unit 300 is an inversely-rotated edgewise coil unit 500, and as shown in fig. 5, the inversely-rotated edgewise coil unit 500 is provided, and the crossover 402 distance of the inversely-rotated edgewise coil unit 500 is 4.

Alternatively, the coil conductors forming the vertically wound coil unit 300 are flat wires.

Note that the vertical winding of the flat wire means that the coil conductor wound around the coil is a flat wire, and referring to fig. 4, the flat side of the coil conductor is parallel to the axial direction of the stator core, and one tooth of the "three-dimensional" wound stator core is shown.

The above-described edgewise coil unit 300 will be described in detail with reference to a specific embodiment.

Specifically, with reference to fig. 2 to 5, the number of slots of the stator core is determined to be 30, the number of parallel branches n of the edgewise motor winding 200 is 5, and the number M of edgewise coil units 300 in each phase of the edgewise coil group 201 is 5, where the number M of the forward-wound edgewise coil units 400 is M₁The number M of the counter-rotating vertical coil units 500 is 3₂The number N of the edgewise coils 301 is 2.

The 1 st positively wound coil unit 400 is fed counterclockwise into the 2 nd slot 102-2 from the incoming end 301-U1 of the coil conductor, and the 1 st tooth part 101 between the 1 st slot 102-1 and the 2 nd slot 102-2 is vertically wound from outside to inside counterclockwise along the radial direction to form the 1 st vertically wound coil 301 of the 1 st positively rotated vertically wound coil unit 400, the coil conductor extends out from the 1 st slot 102-1 and then enters the 11 th slot 102-11 at an interval of 10 tooth parts 101 along the counterclockwise direction, and vertically winding the 10 th tooth 101 between the 10 th slot 102-10 and the 11 th slot 102-11 counterclockwise from the outside to the inside in the radial direction to form the 2 nd vertically wound coil 301 of the 1 st forward-wound coil unit 400, and extends out of outlet end 304-U1 from the 10 th slot 102-10, wherein the length of the long crossover 302-U1 in the 1 st forward wound coil unit 400 is the length of 10 teeth 101.

The 2 nd forward wound coil unit 400 is fed counterclockwise into the 5 th slot 102-5 from the incoming end 301-U2 of the coil conductor, and vertically winding a 4 th tooth part 101 between a 4 th slot 102-4 and a 5 th slot 102-5 from outside to inside counterclockwise along the radial direction to form a1 st vertically wound coil 301 of a2 nd positively-rotated vertically wound coil unit 400, wherein the coil conductor extends out of the 4 th slot 102-4 and then enters a 14 th slot 102-14 at an interval of 10 teeth parts 101 along the counterclockwise direction, and the 13 th tooth 101 between the 13 th slot 102-13 and the 14 th slot 102-14 is wound vertically from outside to inside counterclockwise in the radial direction, forming the 2 nd vertically wound coil 301 of the 2 nd forward-wound coil unit 400, and extends out of outlet end 303-U2 from 13 th slot 102-13, wherein the length of the long crossover 302-U2 in the 2 nd forward wound coil unit 400 is the length of 10 teeth 101.

The 3 rd positively wound coil unit 400 is fed counterclockwise into the 29 th slot 102-29 from the incoming end 301-U3 of the coil conductor, and the 28 th tooth part 101 between the 28 th slot 102-28 and the 29 th slot 102-29 is vertically wound from outside to inside counterclockwise along the radial direction to form the 1 st vertically wound coil 301 of the 3 rd positively rotated vertically wound coil unit 400, the coil conductor is extended from the 28 th slot 102-28 and then enters the 8 th slot 102-8 along the counterclockwise direction at intervals of 10 tooth parts 101, and vertically winds the 7 th tooth part 101 between the 7 th slot 102-7 and the 8 th slot 102-8 from outside to inside counterclockwise in the radial direction to form the 2 nd vertically wound coil 301 of the 3 rd forward-wound coil unit 400, and extends out of the 7 th slot 102-7 to the outlet terminal 303-U3, wherein the length of the long crossover 302-U3 in the 3 rd forward wound coil unit 400 is the length of 10 teeth 101.

The 1 st contra-rotating edgewise coil unit 500 enters the 26 th slot 102-26 clockwise from the incoming end 301-U4 of the coil conductor, and the 25 th tooth part 101 between the 25 th slot 102-25 and the 26 th slot 102-26 is vertically wound from outside to inside along the counterclockwise radial direction to form the 1 st vertically wound coil 301 of the 1 st reversely-rotated vertically wound coil unit 500, the coil conductor is extended from the 25 th slot 102-25 and then enters the 20 th slot 102-20 along the clockwise direction at intervals of 5 tooth parts 101, and the 19 th tooth 101 between the 19 th slot 102-19 and the 20 th slot 102-20 is wound vertically from outside to inside counterclockwise, forming the 2 nd vertically wound coil 301 of the 1 st reversely wound coil unit 500, and extends out of 19 th slot 102-19 to outlet 303-U4, wherein the long span length 302-U4 in the 1 st derotation edgewise coil unit 500 is the length of 5 teeth 101.

The 2 nd counter-wound coil unit 500 is fed clockwise from the incoming end 301-U5 of the coil conductor into the 23 rd slot 102-23, and the 22 nd tooth part 101 between the 22 nd slot 102-22 and the 23 rd slot 102-23 is vertically wound from outside to inside along the anticlockwise radial direction to form the 1 st vertically wound coil 301 of the 2 nd reversely-rotated vertically wound coil unit 500, the coil conductor is extended from the 22 nd slot 102-22 and then enters the 17 th slot 102-17 along the clockwise direction at intervals of 5 tooth parts 101, and the 16 th tooth 101 between the 16 th slot 102-16 and the 17 th slot 102-17 is wound immediately counterclockwise from the outside to the inside in the radial direction, forming the 2 nd edgewise coil 301 of the 2 nd counter-rotating edgewise coil unit 500, and extends out of 16 th slot 102-16 to outlet end 303-U5, wherein the length of the long crossover 302-U5 in the 2 nd counter-rotating edgewise coil unit 500 is the length of 5 teeth 101.

It should be noted that, in fig. 2 to 5, the winding directions of the vertical coils 401 of the forward-rotation vertical-winding coil unit 400 and the reverse-rotation vertical-winding coil unit 500 can be switched from counterclockwise to clockwise, and correspondingly, the forming direction of the crossover 402 can also be switched from counterclockwise or clockwise to clockwise or counterclockwise, which is not described herein again.

Alternatively, as shown in fig. 1-3, the flying lead 402 is disposed axially outward of the edgewise coil 401.

In the present application, the crossover 402 is provided on the outside of the vertical wound coil 401 in the axial direction, that is, on the upper and lower ends of the slots of the stator core, and does not extend above the yoke portion of the stator core.

Fig. 6 is a schematic diagram of an edgewise coil according to an embodiment of the present invention.

Alternatively, as shown in fig. 6, each of the vertically wound coils 401 includes a plurality of first in-slot portions 4011, a plurality of second in-slot portions 4012, and a plurality of turn portions 4013, the plurality of first in-slot portions 4011 and the plurality of second in-slot portions 4012 being disposed in two adjacent slots on the stator core; the turning radius R of the turning portion 4013 is (2 × t + w + x)/2, where R is the turning radius of the turning portion 4013, t is the thickness of the insulation paper, w is the width of the tooth portion, and x is the variation of the gap between the inside of the slot and the tooth portion.

Specifically, the size of the turning radius of the turning portion 4013 can be obtained by the formula R ═ 2 × t + w + x)/2, the unit of the turning radius R is mm, see fig. 6, and x is a value of a gap between the inside of the slot of the edgewise coil and the tooth portion around which the edgewise coil is wound, and this value is a variable and can be set as needed. The value of turning radius of turning portion 4013 in this application is greater than the radius value of the turning portion of general motor coil, adopts big turning radius to compare with the nearly rectangle structure of the little circular arc of coil tip, and the winding thickness that the coil tip orthodrome structure can reduce to bend and pile up the difficult control of winding thickness that arouses and the winding film is because of piling up the easy damage problem.

It should be noted that the parameter t in the calculation formula of the turning radius R refers to the thickness of the insulating paper, the insulating paper used in this application is special-shaped insulating paper, and the selected insulating paper is preferably insulating paper with a small thickness and a low cost.

Optionally, the incoming line end 301 is connected to a phase outgoing line, and the outgoing line end 303 is connected to a neutral point; alternatively, the incoming line end 301 is connected to a neutral point and the outgoing line end 303 is connected to a phase outgoing line.

Specifically, the incoming line end 301 and the outgoing line end 303 may be connected to the phase outgoing line and the neutral point respectively, or may be connected to the neutral point and the phase outgoing line in reverse respectively, and may be switched as needed in actual use.

The embodiment of the utility model provides a motor stator is still provided, see fig. 2-3, include: the stator core 100 and the flat wire edgewise wound motor winding 200 according to any of the embodiments; the stator core 100 is an integrated structure and includes P teeth 101; the P tooth parts 101 extend towards the inner side in the radial direction and are uniformly distributed along the circumferential direction, two adjacent tooth parts 101 form a groove 102, the number of the grooves 102 is P, P is a multiple of 3, and P is an integer; the flat-wire vertically wound motor winding 200 is formed by winding a coil conductor around the teeth 101 according to a predetermined rule.

FIG. 7 is a schematic view of a T-shaped slot wedge according to an embodiment of the present invention

Optionally, the stator core 100 further includes a plurality of T-slot wedges 60, and the T-slot wedges 60 are disposed between two adjacent edgewise coils 401 in the same slot 102.

Specifically, a T-shaped slot wedge 60 is arranged between two adjacent vertically wound coils 401 in the same slot 102, and the T-shaped slot wedge 60 is made of an insulating material. The T-shaped slot wedge 60 is a radial fixing structure of the coil winding, and the T-shaped slot wedge 60 is arranged, so that the structure is simplified, and the radial stability of the coil is guaranteed.

Alternatively, as shown in fig. 6, the stator core 100 further includes a projection 70, the projection 70 of the stator core 100 is formed by stacking thin steel plates, and a cross-sectional shape of a portion where the stator core 100 fits to the turn 4013 includes one of: trapezoid, step-shaped, and semicircular.

Specifically, the convex portion 70 is matched with the turning portion 4013 of the vertical winding coil 401, and the large-radius arc of the turning portion 4013 and the convex portion 70 formed by stacked thin steel plates can increase the effective material utilization rate as much as possible in a limited space, so that the total volume of the stator is reduced, and the torque and the power density of the motor are improved.

The embodiment of the utility model provides a motor stator includes the flat wire in above-mentioned embodiment and immediately winds motor winding, consequently the embodiment of the utility model provides a motor stator also possesses the beneficial effect that above-mentioned embodiment described, and here is no longer repeated.

The embodiment of the utility model provides a flat wire is immediately around motor still is provided, include as above-mentioned arbitrary embodiment motor stator.

The embodiment of the utility model provides a flat wire is found around motor stator in the motor includes above-mentioned embodiment, consequently the embodiment of the utility model provides a flat wire is found around motor also possesses the beneficial effect that the above-mentioned embodiment described, and here is no longer repeated.

In the description of the embodiments of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled 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 particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art 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 (10)

1. A flat wire vertical winding motor winding is characterized by comprising a three-phase vertical winding coil group; each phase of the vertical winding coil group comprises M vertical winding coil units, M is more than or equal to 2 and is an integer;

wherein each of the vertically wound coil units includes: the winding device comprises a wire inlet end, a winding part and a wire outlet end;

the wire inlet end and/or the wire outlet end are/is formed by a coil conductor along the radial direction, and the winding part is formed by the coil conductor along the circumferential direction;

the winding part comprises N vertical winding coils and N-1 overlines, N is more than or equal to 2, N is the number of slots/3/N of the stator core, N is the number of parallel branches of the flat wire vertical winding motor winding, and N is more than 2; and one crossover is formed between the two vertically wound coils.

2. The edgewise motor winding of claim 1,

the wire inlet end is formed by the vertically wound coil unit extending into the stator core through the coil conductor along the radial direction, the winding part is formed by the coil conductor entering a groove of the stator core along the circumferential direction and winding a tooth part of the stator core, and the wire outlet end is formed by the vertically wound coil unit extending out of the stator core through the coil conductor along the circumferential direction;

or, the wire inlet end is formed by the vertically wound coil unit extending into the stator core through the coil conductor along the radial direction, the winding part is formed by the coil conductor entering the groove of the stator core along the circumferential direction and winding the tooth part of the stator core, and the wire outlet end is formed by the vertically wound coil unit extending out of the stator core through the coil conductor along the radial direction;

or the wire inlet end is formed by the vertically wound coil unit extending into the stator core along the circumferential direction through the coil conductor, the winding part is formed by the coil conductor entering the groove of the stator core along the circumferential direction and winding the tooth part of the stator core, and the wire outlet end is formed by the vertically wound coil unit extending out of the stator core along the radial direction through the coil conductor.

3. The edgewise motor winding of claim 2,

a1 st vertical winding coil is formed by winding one tooth part of the stator core by the coil conductor, a2 nd vertical winding coil is formed by winding the other tooth part of the stator core by the 1 st vertical winding coil at a preset distance, and an Nth vertical winding coil is formed by winding the other tooth part of the stator core by the N-1 th vertical winding coil at the preset distance;

wherein, the preset distance is 2Q, Q is a constant and is not less than 1, and Q is an integer.

4. The edgewise motor winding of claim 1,

the coil conductors forming the vertically wound coil unit are flat wires.

5. The edgewise motor winding of claim 1, wherein the flying lead is disposed axially outward of the edgewise coil.

6. The edgewise motor winding of claim 1,

each vertical winding coil comprises a plurality of first in-slot parts, a plurality of second in-slot parts and a plurality of turning parts, wherein the plurality of first in-slot parts and the plurality of second in-slot parts are arranged in two adjacent slots on the stator core;

and the turning radius R of the turning part is (2 x t + w + x)/2, wherein R is the turning radius of the turning part, t is the thickness of the insulating paper, w is the width of the tooth part, and x is the variable of the gap between the inside of the groove and the tooth part.

7. The flat-wire end-wound motor winding of claim 1, wherein the incoming wire end is connected to a phase outgoing wire, and the outgoing wire end is connected to a neutral point; or the wire inlet end is connected with a neutral point, and the wire outlet end is connected with a phase outgoing wire.

8. An electric machine stator, comprising: a stator core and a flat-wire edgewound machine winding according to any of the preceding claims 1-7;

the stator core is of an integrated structure and comprises P tooth parts; the P tooth parts extend towards the inner side in the radial direction and are uniformly distributed along the circumferential direction, two adjacent tooth parts form a groove, the number of the grooves is P, P is a multiple of 3, and P is an integer;

the flat wire vertical winding motor winding is formed by winding a coil conductor around the tooth part according to a preset rule.

9. The electric machine stator of claim 8, wherein the stator core further comprises a plurality of T-slot wedges disposed between two adjacent edgewise coils in the same slot.

10. A edgewise electrical machine comprising an electrical machine stator according to any of claims 8-9.

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