CN219918519U - Stator assembly with inner layer flaring and motor - Google Patents
Stator assembly with inner layer flaring and motor Download PDFInfo
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- CN219918519U CN219918519U CN202321289655.6U CN202321289655U CN219918519U CN 219918519 U CN219918519 U CN 219918519U CN 202321289655 U CN202321289655 U CN 202321289655U CN 219918519 U CN219918519 U CN 219918519U
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- 238000004804 winding Methods 0.000 claims abstract description 90
- 239000004020 conductor Substances 0.000 claims abstract description 81
- 238000003466 welding Methods 0.000 claims description 26
- 238000005452 bending Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
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- 230000001360 synchronised effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of flat wire motors, in particular to a stator assembly with an inner layer flaring, which comprises a stator assembly and a stator winding, wherein the stator assembly comprises a stator core and a stator winding; a plurality of stator slots are formed in the stator core; the width of the notch of the stator slot is larger than the thickness of the rectangular conductor on the layer B; the winding wire of the stator winding adopts rectangular conductors, and B layers of rectangular conductors are arranged in each stator slot along the radial direction of the stator core; wherein B is an odd number greater than 3; the stator winding comprises P small units, wherein half of the small units are flaring small units and half of the common small units, and the flaring small units and the common small units are arranged at intervals; wherein, p=a/E, a is the number of stator slots on the stator core, and E is the number of stator slots per pole per phase. The notch width design of stator groove is to the inward flaring of layer B rectangular conductor turn-ups provides the space, and notch width design helps reducing the alternating current loss simultaneously, improves motor efficiency.
Description
Technical Field
The utility model belongs to the field of flat wire motors, and particularly relates to a stator assembly with an inner layer flaring and a motor.
Background
With the rapid development of new energy automobiles, the permanent magnet synchronous motor is applied in a large scale. As a core driving component of a new energy automobile, high efficiency, high speed and high power density ratio are main development trends of permanent magnet synchronous motors.
In the existing flat wire motor scheme, the number of conductors in each stator slot is an even number. The number of conductors in each slot is even, the number of turns in series connection of each phase winding of the motor can be less, the number of turns matching cannot be optimal, and the power and torque performance of the motor are affected. However, when the number of conductors in the stator slot is set to an odd number, there are the following problems: when in welding, every two adjacent conductors are welded in a group along the radial direction of the stator core, so that one conductor is added, the welding cannot be performed in a crossing layer combination mode, each branch is completely communicated, a plurality of bridging wires are needed, and the structure wiring is complex and the mass production manufacturability is poor.
Disclosure of Invention
In view of the above problems, the present utility model provides a stator assembly with an inner layer flaring, the stator assembly including a stator core and a stator winding; a plurality of stator slots are formed in the stator core;
the width of the notch of the stator slot is larger than the thickness of the rectangular conductor on the layer B;
the winding wire of the stator winding adopts rectangular conductors, and B layers of rectangular conductors are arranged in each stator slot along the radial direction of the stator core; wherein B is an odd number greater than 3;
the stator winding comprises P small units, wherein half of the small units are flaring small units and half of the common small units, and the flaring small units and the common small units are arranged at intervals; wherein, p=a/E, a is the number of stator slots on the stator core, and E is the number of stator slots per pole per phase.
Further, the flaring small unit refers to a small unit subjected to flaring treatment and twisting treatment;
the common small unit refers to a small unit which is processed by twisting;
the flaring treatment is to bend the welding end of the rectangular conductor of the layer B towards the radial inner side of the stator core;
the twisting treatment refers to bending the welding end of the rectangular conductor towards the circumferential direction of the stator core.
Further, the distance from the inner edge of the conductor of the layer B rectangular conductor at the welding end to the axis of the stator core is not smaller than the distance from the inner wall of the stator core to the axis of the stator core.
Further, the connection mode of the stator winding at the hairpin end comprises: the 1 st layer rectangular conductor of one stator slot is connected with the 1 st layer rectangular conductor of the other stator slot in a combined span mode; the 2 nd layer rectangular conductor of one stator slot is connected with the 3 rd layer rectangular conductor of the other stator slot in a whole pitch span mode; the G layer rectangular conductor of one stator slot and the G+1 layer rectangular conductor of the other stator slot are connected in a combined span mode; wherein G is more than 3 and less than B, and G is an even number;
the connection mode of the stator winding at the welding end comprises the following steps: the H layer rectangular conductor of one stator slot is connected with the H+1 layer rectangular conductor of the other stator slot in a whole-distance span mode; the rectangular conductors of the B layer of one stator slot are connected with the rectangular conductors of the B layer of the other stator slot in a span mode; wherein H is more than or equal to 1 and less than B, and H is an odd number.
Further, the combined span represents a mixed span mode of full distance, long distance and short distance.
Further, the integral distance has a calculation formula: i=a/2D; wherein I is the whole distance, A is the number of stator slots, and D is the pole pair number of the stator winding;
the calculation formula of the long distance is as follows: j=i+k; wherein J is a long distance, I is an integral distance, K is an integer, K is more than or equal to 1 and less than E, and E is the number of stator slots of each pole and each phase;
the calculation formula of the short distance is as follows: l=i-K; wherein L is short distance, I is whole distance, K is integer, K is more than or equal to 1 and less than E, E is the number of stator slots of each pole and each phase.
Further, the average value of the whole distance, the long distance and the short distance adopted by the combined span is a whole distance value.
Further, when the stator assembly is used for outgoing lines at the card sending end, the outgoing lines of the same branch of the welding end are connected with star point lines, any card sending line at the card sending end is divided into two I-pin lines, any one I-pin line is taken as the outgoing line, and the other I-pin line is taken as the star point line.
The utility model also provides a motor, which comprises the stator assembly.
The beneficial effects of the utility model are as follows:
1. the notch width design of stator groove is to the inward flaring of layer B rectangular conductor turn-ups provides the space, and notch width design helps reducing the alternating current loss simultaneously, improves motor efficiency.
2. The utility model solves the problem of arrangement and connection of odd-layer windings while ensuring normal cooperation operation of the rotor assembly and the stator assembly, and the welding ends have no jumper wires or cross wires, thereby being beneficial to the structural arrangement of the motor and reducing the space size of the end part of the motor winding.
3. The stator winding hairpin end winding provided by the utility model has the advantages that the innermost layer of the stator winding hairpin end winding is not provided with the hairpin connected with the same layer, the layer is not required to be externally expanded, the wire forming is facilitated, the wire plugging is simple, the manufacturing manufacturability is good, and the size of the coil is more advantageous.
4. According to the winding connection scheme of the stator winding, the number of elements of each branch of each phase winding is the same, the number of phase slots and the number of layers of each branch are the same, and balanced arrangement of the three-phase winding is realized. The odd-layer flat copper wire motor provides more turns ratio selection for matching the performance of the motor, and improves the output performance of the motor; the problem of odd-layer winding arrangement connection is solved, and a solution with good manufacturability is provided for the realization of an odd-layer winding motor.
5. The stator winding provided by the utility model can be used for outgoing lines at the welding end and also can be used for outgoing lines at the hairpin end. The winding scheme of the odd-layer flat wire motor is enriched.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a welded end of a stator assembly according to an embodiment of the present utility model;
FIG. 2 shows an enlarged schematic view of portion A of FIG. 1;
fig. 3 shows a schematic structure of the stator slot.
In the figure: 1-a stator core; 11-inner wall of stator core; 2-stator slots; 3-in-slot conductors; 31-layer B rectangular conductors; 311-conductor inner edge; 4-notch.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
An embodiment of the utility model provides an electric machine, comprising a rotor assembly and a stator assembly, wherein the rotor assembly is positioned on the inner side of the stator assembly.
Specifically, as shown in fig. 1 to 3, the stator assembly includes a stator core 1 and a stator winding; the stator core 1 is substantially cylindrical in shape so as to house a motor rotor assembly within the stator core. The stator core 1 is provided with a plurality of stator slots 2, and the stator slots 2 are sequentially distributed along the circumferential direction of the stator core 1 and are in an annular array shape. The winding wire of the stator winding adopts a rectangular conductor.
B layers of rectangular conductors are arranged in each stator slot along the radial direction of the stator core, wherein A is an integer, and B is an odd number greater than 3.
For convenience of description, in the embodiment of the present utility model, each layer of rectangular conductors in the same stator slot is sequentially defined as a1 st layer of rectangular conductor, a2 nd layer of rectangular conductor, a … nd layer of rectangular conductor according to a direction from an outer wall of the stator core to an axial center of the stator core.
Specifically, as shown in fig. 2 and 3, the width m of the notch 4 of the stator slot is greater than the thickness n of the rectangular conductor 31 of the B-th layer.
The slot opening width design of the stator slot provides space for the B-layer rectangular conductor to the flaring torsion head at the inner side of the stator core, and meanwhile, the slot opening width design is beneficial to reducing alternating current loss and improving motor efficiency.
Further, the stator winding is a three-phase winding, namely, the phase number c=3; the number of poles of the stator winding is 2D, the number of stator slots of each pole per phase is E=A/(C.times.2D), and the number of parallel branches of each phase winding is F, wherein F is less than or equal to E.
Further, the E number of the B-th rectangular conductors in each phase of each pole is set as a small unit, and the stator core has P=A/E small units in the circumferential direction. The P/2 small units are subjected to flaring treatment and twisting treatment and are marked as flaring small units; in addition, the P/2 small units are not subjected to flaring treatment, and are only subjected to twisting treatment and marked as common small units. The flaring small units are arranged at intervals with the common small units, namely, two small units adjacent to one flaring small unit are both common small units, and two small units adjacent to one common small unit are flaring small units.
The stator winding may be divided into an in-slot winding and an end winding; the in-slot winding is the part of the rectangular conductor in the stator slot, and a plurality of layers of rectangular conductors are sequentially arranged in each stator slot along the radial direction of the stator core. The end windings are used for pairing according to a certain span and connecting rectangular conductors at different positions in different stator slots so as to realize the internal connection of the stator windings. The end windings are distributed on two sides of the stator core and are respectively a hairpin end and a welding end.
Specifically, the flaring refers to bending the welded end of the B-th rectangular conductor 31 radially inward of the stator core 1.
The twisting process is to bend the welding end of the rectangular conductor 3 in the circumferential direction of the stator core 1.
The B-th layer rectangular conductor 31 after the flaring and twisting is in a two-layer distribution state at the welded end. And combining and connecting the layered rectangular conductors of the layer B according to the connection mode of the stator winding at the welding end.
Preferably, the distance between the inner edge 311 of the conductor at the welding end of the rectangular conductor 31 of the layer B and the axial center of the stator core 1 is not smaller than the distance between the inner wall 11 of the stator core and the axial center of the stator core 1. I.e. at the welded ends, the edges of the end windings do not always exceed the inner wall 11 of the stator core. The rotor assembly and the stator assembly are guaranteed to operate in a normal matching mode, the problem of arrangement and connection of odd-layer windings is solved, and the welding ends do not have jumper wires or cross wires, so that the motor structure arrangement is facilitated, and the space size of the end part of the motor winding is reduced.
Further preferably, the winding mode of the stator winding is determined by a connection mode of the stator winding at the hairpin end and a connection mode of the stator winding at the welding end.
Specifically, the connection mode of the stator winding at the hairpin end comprises: the 1 st layer rectangular conductor of one stator slot is connected with the 1 st layer rectangular conductor of the other stator slot in a combined span mode; the 2 nd layer rectangular conductor of one stator slot is connected with the 3 rd layer rectangular conductor of the other stator slot in a whole pitch span mode; the G layer rectangular conductor of one stator slot and the G+1 layer rectangular conductor of the other stator slot are connected in a combined span mode; wherein, G is more than 3 and less than B, and G is even.
The connection mode of the stator winding at the welding end comprises the following steps: the H layer rectangular conductor of one stator slot is connected with the H+1 layer rectangular conductor of the other stator slot in a whole-distance span mode; the rectangular conductors of the B layer of one stator slot are connected with the rectangular conductors of the B layer of the other stator slot in a span mode; wherein H is more than or equal to 1 and less than B, and H is an odd number.
Specifically, the combined span means a mixed span mode of full distance, long distance and short distance.
The calculation formula of the whole distance is as follows: i=a/2D; wherein I is the whole distance, A is the number of stator slots, and D is the pole pair number of the stator winding.
The calculation formula of the long distance is as follows: j=i+k; wherein J is a long distance, I is an integer distance, K is an integer, K is more than or equal to 1 and less than E, and E is the number of stator slots of each pole and each phase.
The calculation formula of the short distance is as follows: l=i-K; wherein L is short distance, I is whole distance, K is integer, K is more than or equal to 1 and less than E, E is the number of stator slots of each pole and each phase.
Specifically, the average value of the whole distance, the long distance and the short distance adopted by the combined span is a whole distance value.
For example, the combined span employed by the stator assembly includes three spans of full pitch I, first long pitch J1, and first short pitch L1, then (i+j1+l1)/3=i is satisfied.
For another example, the combined span employed by the stator assembly includes five spans of full pitch I, first long pitch J1, second long pitch J2, first short pitch L1, and second short pitch L2, then (i+j1+j2+l1+l2)/5=i is satisfied.
The two rectangular conductors in the winding in the slot are connected through the hairpin end or the welding end, and the number of stator slots spaced between the two rectangular conductors is increased by one along the circumferential direction of the stator core, so that the span of the two rectangular conductors at the hairpin end or the welding end is represented.
The stator winding hairpin end winding innermost layer does not have a hairpin connected with the same layer, does not need layer expansion, is beneficial to wire forming, is simple in wire insertion, good in manufacturing manufacturability and more advantageous in coil size.
According to the winding connection scheme of the stator winding, the number of elements of each branch of each phase winding is the same, the number of phase slots and the number of layers of each branch are the same, and balanced arrangement of the three-phase winding is realized. The odd-layer flat copper wire motor provides more turns ratio selection for matching the performance of the motor, and improves the output performance of the motor; the problem of odd-layer winding arrangement connection is solved, and a solution with good manufacturability is provided for the realization of an odd-layer winding motor.
Further preferably, when the stator assembly is used for outgoing lines at the card sending end, the outgoing lines of the same branch of the welding end are connected with star point lines, any one card sending line at the card sending end is divided into two I-pin lines, any one I-pin line is taken as the outgoing line, and the other I-pin line is taken as the star point line.
The stator assembly can be led out at the welding end or the hairpin end. The winding scheme of the odd-layer flat wire motor is enriched.
Further preferably, as shown in fig. 1 and 2, the stator slots of the stator assembly have an unequal width slot structure. The winding scheme of the odd-layer flat wire motor is further enriched.
Example 1
The embodiment provides a three-phase motor stator, 72 stator slots are arranged on a stator core, the pole pair number is 4, a stator winding comprises X, Y, Z three-phase windings, the number of stator slots of each phase of each pole is 3, and the number of parallel branches is 3. The number of rectangular conductor layers 5 in each stator slot. I.e. a=72, d=4, c=3, e=3, f=3, b=5. The outgoing line position of the stator assembly is at the welding end.
For convenience of description, all stator slots on the stator core are sequentially ordered according to a circumferential direction, and are respectively denoted as A1, A2, A3, … and a 72. A1 (1) A1 st layer rectangular conductor of A1 st stator slot.
The first branch winding route of the X-phase winding is as follows:
A38(2)→A47(3)→A38(4)→A48(5)→A57(5)→A49(4)→A58(3)
→A49(2)→A58(1)→A65(1)→A56(2)→65(3)→A56(4)→A65(5)→A2(5)→A65(4)→A2(3)→A65(2)→A2(1)→A12(1)→A3(2)→A12(3)→A3(4)→A12(5)→A21(5)→A12(4)→A21(3)→A12(2)→A21(1)→A31(1)→A22(2)→A31(3)→A22(4)→A31(5)→A40(5)→A31(4)→A40(4)→A31(2)→A40(1)→A47(1)。
the second branch winding route of the X-phase winding is as follows:
A39(2)→A48(3)→A39(4)→A49(5)→A58(5)→A47(4)→A56(3)
→A47(2)→A56(1)→A66(1)→A57(2)→A66(3)→A57(4)→A66(5)→A3(5)→A66(4)→A3(3)→A66(2)→A3(1)→A13(1)→A4(2)→A13(3)→A4(4)→A13(5)→A22(5)→A13(4)→A22(3)→A13(2)→A22(1)→A29(1)→A20(2)→A29(3)→A20(4)→A29(5)→A38(5)→A29(4)→A38(3)→A29(2)→A38(1)→A48(1)。
the third branch winding route of the X-phase winding is as follows:
A40(2)→A49(3)→A40(4)→A47(5)→A56(5)→A48(4)→A57(3)
→A48(2)→A57(1)→A67(1)→A58(2)→A67(3)→A58(4)→A67(5)→A4(5)→A67(4)→A4(3)→A67(2)→A4(1)→A11(1)→A2(2)→A11(3)→A2(4)→A11(5)→A20(5)→A11(4)→A20(3)→A11(2)→A20(1)→A30(1)→A21(2)→A30(3)→A21(4)→A30(5)→A39(5)→A30(4)→A39(3)→A30(2)→A39(1)→A49(1)。
according to the design of the winding path, the number of elements of each branch of each phase winding of the stator winding is the same, the number of phase slots and the number of layers of each branch passing through are the same, the counter potential phases of each branch are basically realized to be the same, the resistances and the inductances of the head end and the tail end of each branch are the same, and the balanced arrangement of the three-phase windings is realized.
Example 2
The embodiment provides a three-phase motor stator, 72 stator slots are arranged on a stator core, the pole pair number is 4, a stator winding comprises X, Y, Z three-phase windings, the number of stator slots of each phase of each pole is 3, and the number of parallel branches is 3. The number of rectangular conductor layers 5 in each stator slot. I.e. a=72, d=4, c=3, e=3, f=3, b=5. The outlet position of the stator assembly is at the card sending end.
When the stator assembly is used for outgoing lines at the card issuing end, the outgoing lines of the same branch of the welding end are connected with star point lines, any one card issuing line at the card issuing end is divided into two I-pin lines, any one I-pin line can be used as the outgoing line, and the other I-pin line is used as the star point line.
For convenience of description, all stator slots on the stator core are sequentially ordered according to a circumferential direction, and are respectively denoted as A1, A2, A3, … and a 72. A1 (1) A1 st layer rectangular conductor of A1 st stator slot.
The first branch winding route of the X-phase winding is as follows:
A47(1)→A38(2)→A47(3)→A38(4)→A48(5)→A57(5)→A49(4)
→A58(3)→A49(2)→A58(1)→A65(1)→A56(2)→65(3)→A56(4)→A65(5)→A2(5)→A65(4)→A2(3)→A65(2)→A2(1)→A12(1)→A3(2)→A12(3)→A3(4)→A12(5)→A21(5)→A12(4)→A21(3)→A12(2)→A21(1)→A31(1)→A22(2)→A31(3)→A22(4)→A31(5)→A40(5)→A31(4)→A40(4)→A31(2)→A40(1)。
the second branch winding route of the X-phase winding is as follows:
A48(1)→A39(2)→A48(3)→A39(4)→A49(5)→A58(5)→A47(4)
→A56(3)→A47(2)→A56(1)→A66(1)→A57(2)→A66(3)→A57(4)→A66(5)→A3(5)→A66(4)→A3(3)→A66(2)→A3(1)→A13(1)→A4(2)→A13(3)→A4(4)→A13(5)→A22(5)→A13(4)→A22(3)→A13(2)→A22(1)→A29(1)→A20(2)→A29(3)→A20(4)→A29(5)→A38(5)→A29(4)→A38(3)→A29(2)→A38(1)。
the third branch winding route of the X-phase winding is as follows:
A49(1)→A40(2)→A49(3)→A40(4)→A47(5)→A56(5)→A48(4)
→A57(3)→A48(2)→A57(1)→A67(1)→A58(2)→A67(3)→A58(4)→A67(5)→A4(5)→A67(4)→A4(3)→A67(2)→A4(1)→A11(1)→A2(2)→A11(3)→A2(4)→A11(5)→A20(5)→A11(4)→A20(3)→A11(2)→A20(1)→A30(1)→A21(2)→A30(3)→A21(4)→A30(5)→A39(5)→A30(4)→A39(3)→A30(2)→A39(1)。
although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (9)
1. An inner flared stator assembly comprising the stator assembly including a stator core and a stator winding; the stator core is provided with a plurality of stator slots, which is characterized in that,
the width of the notch of the stator slot is larger than the thickness of the rectangular conductor on the layer B;
the winding wire of the stator winding adopts rectangular conductors, and B layers of rectangular conductors are arranged in each stator slot along the radial direction of the stator core; wherein B is an odd number greater than 3;
the stator winding comprises P small units, wherein half of the small units are flaring small units and half of the common small units, and the flaring small units and the common small units are arranged at intervals; wherein, p=a/E, a is the number of stator slots on the stator core, and E is the number of stator slots per pole per phase.
2. An inner flared stator assembly according to claim 1, wherein the flared small units are small units which are flared and twist-treated;
the common small unit refers to a small unit which is processed by twisting;
the flaring treatment is to bend the welding end of the rectangular conductor of the layer B towards the radial inner side of the stator core;
the twisting treatment refers to bending the welding end of the rectangular conductor towards the circumferential direction of the stator core.
3. The inner flared stator assembly of claim 2, wherein the distance from the inner edge of the welded end of the rectangular B-th layer conductor to the core axis is no less than the distance from the inner wall of the core to the core axis.
4. The inner flared stator assembly of claim 1, wherein the stator windings are connected at the hairpin end in a manner comprising: the 1 st layer rectangular conductor of one stator slot is connected with the 1 st layer rectangular conductor of the other stator slot in a combined span mode; the 2 nd layer rectangular conductor of one stator slot is connected with the 3 rd layer rectangular conductor of the other stator slot in a whole pitch span mode; the G layer rectangular conductor of one stator slot and the G+1 layer rectangular conductor of the other stator slot are connected in a combined span mode; wherein G is more than 3 and less than B, and G is an even number;
the connection mode of the stator winding at the welding end comprises the following steps: the H layer rectangular conductor of one stator slot is connected with the H+1 layer rectangular conductor of the other stator slot in a whole-distance span mode; the rectangular conductors of the B layer of one stator slot are connected with the rectangular conductors of the B layer of the other stator slot in a span mode; wherein H is more than or equal to 1 and less than B, and H is an odd number.
5. The inner flared stator assembly of claim 4, wherein the combined span representation is in a mixed span manner of full, long, and short spans.
6. The inner flared stator assembly of claim 5, wherein the integer distance is calculated as: i=a/2D; wherein I is the whole distance, A is the number of stator slots, and D is the pole pair number of the stator winding;
the calculation formula of the long distance is as follows: j=i+k; wherein J is a long distance, I is an integral distance, K is an integer, K is more than or equal to 1 and less than E, and E is the number of stator slots of each pole and each phase;
the calculation formula of the short distance is as follows: l=i-K; wherein L is short distance, I is whole distance, K is integer, K is more than or equal to 1 and less than E, E is the number of stator slots of each pole and each phase.
7. The inner flared stator assembly of claim 5 or 6, wherein the combined spans take the form of an integer, long, and short average value of an integer value.
8. The stator assembly with the flaring of the inner layer according to claim 4, wherein when the stator assembly is used for outgoing lines of the hairpin end, the outgoing lines of the same branch of the welding end are connected with star points, any one of the hairpin lines of the hairpin end is divided into two I-pin lines, any one of the I-pin lines can be used as the outgoing lines, and the other I-pin line can be used as the star points.
9. An electric machine comprising the stator assembly of any one of claims 1-8.
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| CN202321289655.6U CN219918519U (en) | 2023-05-25 | 2023-05-25 | Stator assembly with inner layer flaring and motor |
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| CN202321289655.6U Active CN219918519U (en) | 2023-05-25 | 2023-05-25 | Stator assembly with inner layer flaring and motor |
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2023
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