CN117200494B - 72-slot 6-pole 4-branch hairpin type flat wire armature winding and motor - Google Patents
72-slot 6-pole 4-branch hairpin type flat wire armature winding and motor Download PDFInfo
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Abstract
The invention provides a 72-slot 6-pole 4-branch hairpin type flat wire armature winding and a motor, wherein the winding comprises an annular stator, wherein the inner side of the annular stator is provided with 8 layers of 72 stator slots in a penetrating and winding way by adopting a three-phase parallel flat wire matched with a hairpin; the U-phase winding comprises four parallel branches, wherein the four branches are respectively formed by winding a flat wire from a first starting point, a second starting point, a third starting point and a fourth starting point which are positioned on a1 st layer to an 8 th layer along the circumferential spiral direction in a matched manner, and then reversely spirally winding the 8 th layer to a first end point, a second end point, a third end point and a fourth end point which are positioned on the 1 st layer; the V-phase winding rotates 8 slots along the increasing direction of the slots relative to the U-phase winding to obtain the V-phase winding; the W-phase winding rotates 16 slots along the increasing direction of the slots relative to the U-phase winding. The winding is beneficial to the improvement of the full rate of the motor slot so as to generate higher magnetic field intensity, improve the motor power, realize the current balance of each parallel branch, avoid the circulation problem and improve the efficiency and the performance of the flat wire motor.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a 72-slot 6-pole 4-branch hairpin type flat wire armature winding and a motor.
Background
Because the flat wire motor can obviously improve the slot filling rate and the motor efficiency of the motor, more and more flat wire motors are applied to new energy automobile driving systems. However, in the existing connection mode of the flat wire stator winding, under the action of skin effect and proximity effect, current is unevenly distributed along the section of the flat copper wire at high rotation speed, so that the resistances of all windings are different, the current flowing through all windings is unbalanced, larger additional copper loss is generated, the efficiency of the motor is influenced, and the continuous performance of the motor is weakened at high speed.
In order to improve the problems, the invention provides a novel 72-slot 6-pole 4-branch hairpin type flat wire armature cross short-distance winding and a motor.
Disclosure of Invention
Based on the expression, the invention provides a 72-slot 6-pole 4-branch hairpin type flat wire armature winding and a motor, which solve the technical problems that the current flowing through each winding of the existing flat wire stator winding is unbalanced, the efficiency and the performance of the motor are affected, simplify the manufacturing process, concentrate phase lines and neutral lines on the same layer of the stator and have very close separation distance, and simplify the design of outgoing line copper bars.
The technical scheme for solving the technical problems is as follows:
the invention provides a 72-slot 6-pole 4-branch hairpin type flat wire armature winding, which is obtained by adopting a three-phase parallel flat wire to be matched with an annular stator with 8 layers of 72 stator slots on the inner side of the stator through hairpin winding; the three phases are a U phase, a V phase and a W phase;
the U-phase winding comprises four parallel branches, wherein the four branches are respectively formed by sequentially winding a flat wire from a first starting point, a second starting point, a third starting point and a fourth starting point which are positioned on the 1 st layer to the 8 th layer along the circumferential spiral direction in a matching manner, and then reversely spirally winding the 8 th layer to a first end point, a second end point, a third end point and a fourth end point which are positioned on the 1 st layer;
the V-phase winding rotates for 8 slots along the increasing direction of the slots relative to the U-phase winding to obtain the V-phase winding;
the W-phase winding rotates for 16 slots along the increasing direction of the slots relative to the U-phase winding.
On the basis of the technical scheme, the invention can be improved as follows.
Further, when the flat wire with three-phase parallel four branches is adopted to pass through 8 layers of 72 slots in cooperation with the hairpin, the pole number is 6, and the branch number is 4; defining xy as the y layer of the x slot position, wherein x is [1, 72], y is [ a, h ], a is the 1 st layer and is positioned in the slot, h is the 8 th layer and is positioned outside the slot, U1+ is the initial inflow point of the first branch current on the U phase, U1-is the final outflow point of the first branch current on the U phase, and the first branch of the U phase winding is:
49a→62b→2c→13d→25e→38f→50g→61h→3h→64g→52f→40e→28d→15c→3b→64a→1a→14b→26c→37d→49e→62f→2g→13h→27h→16g→4f→63e→51d→40c→28b→15a→25a→38b→50c→61d→1e→14f→26g→37h→51h→40g→28f→15e→4d→63c→52b→39a。
further, when the flat wire with three-phase parallel four branches is adopted to pass through 8 layers of 72 slots in cooperation with the hairpin, the pole number is 6, and the branch number is 4; defining xy as the y layer of the x slot position, wherein x is [1, 72], y is [ a, h ], a is the 1 st layer and is positioned in the slot, h is the 8 th layer and is positioned outside the slot, U1+ is the initial inflow point of the first branch current on the U phase, U1-is the final outflow point of the first branch current on the U phase, and the first branch of the U phase winding is:
50a→63b→3c→14d→25e→38f→50g→61h→3h→64g→52f→40e→29d→16c→4b→65a→2a→15b→27c→38d→49e→62f→2g→13h→27h→16g→4f→63e→52d→41c→29b→16a→26a→39b→51c→62d→1e→14f→26g→37h→51h→40g→28f→15e→5d→64c→53b→40a。
further, when the flat wire with three-phase parallel four branches is adopted to pass through 8 layers of 72 slots in cooperation with the hairpin, the pole number is 6, and the branch number is 4; defining xy as the y layer of the x slot position, wherein x is [1, 72], y is [ a, h ], a is the 1 st layer and is positioned in the slot, h is the 8 th layer and is positioned outside the slot, U1+ is the initial inflow point of the first branch current on the U phase, U1-is the final outflow point of the first branch current on the U phase, and the first branch of the U phase winding is:
49a→63b→2c→14d→25e→39f→50g→62h→4h→64g→53f→40e→29d→15c→4b→64a→1a→15b→26c→38d→49e→63f→2g→14h→28h→16g→5f→63e→52d→40c→29b→15a→25a→39b→50c→62d→1e→15f→26g→38h→52h→40g→29f→15e→5d→63c→53b→39a。
in a second aspect, the present invention also provides an electric machine comprising: a rotor and a 72 slot 6 pole 4 branch hairpin flat wire armature winding according to any one of the first aspects; the rotor is rotatable relative to the 72 slot 6 pole 4 branch hairpin flat wire armature winding.
Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:
the 72-slot 6-pole 4-branch hairpin type flat wire armature winding is obtained by winding n layers of 72 slots layer by layer in the circumferential direction by adopting three-phase parallel flat wires, wherein any one phase winding in the three-phase winding is provided with four-branch flat wires, the four-branch flat wires are respectively wound on the n layers of 72 slots layer by layer according to the sequence of current flowing in the slots, namely the four branches are respectively wound from a first starting point, a second starting point, a third starting point and a fourth starting point which are positioned on a1 st layer to the n layers in the circumferential spiral direction by matching with hairpins, and then are formed by constructing a first end point, a second end point, a third end point and a fourth end point which are positioned on the 1 st layer by reversely spirally winding the n layers, wherein the first starting point, the first end point, the second starting point, the second end point, the third end point, the fourth starting point and the fourth end point are annular loops; wherein n is an even number of layers, and a 72-slot 6-pole 4-branch hairpin type flat wire armature winding is formed, so that a novel hairpin type flat wire armature winding mode is provided. Compared with the existing hairpin windings, the 72-slot 6-pole 4-branch hairpin type flat wire armature winding provided by the invention is beneficial to the improvement of the slot filling rate of the motor so as to generate higher magnetic field intensity and improve the motor power, and can realize the complete balance of the current of each parallel branch, so that the problem of circulation is avoided, the winding structure is simple, the process manufacturability is good, and the efficiency and the performance of the flat wire motor are improved; is suitable for mass production and provides a theoretical basis for motor stator products.
Further, the motor provided by the invention comprises the 72-slot 6-pole 4-branch hairpin type flat wire armature winding, so that the motor at least has all the technical effects of the 72-slot 6-pole 4-branch hairpin type flat wire armature winding, and the technical effects are not repeated here.
Drawings
FIG. 1 is a diagram showing an in-slot conductor pattern of a 72 slot 6 pole 4 branch hairpin type flat wire armature winding according to an embodiment of the invention;
fig. 2 is a schematic diagram of a U-phase winding of a 72-slot 6-pole 4-branch hairpin type flat wire armature winding according to an embodiment of the invention;
fig. 3 is a schematic diagram of a U-phase first branch winding of a 72-slot 6-pole 4-branch hairpin type flat wire armature winding according to an embodiment of the invention;
fig. 4 is a schematic view of a V-phase winding of a 72-slot 6-pole 4-branch hairpin type flat wire armature winding according to an embodiment of the invention;
fig. 5 is a W-phase winding schematic diagram of a 72-slot 6-pole 4-branch hairpin type flat wire armature winding according to an embodiment of the invention;
fig. 6 is a U-phase winding schematic diagram of a 72-slot 6-pole 4-branch hairpin type flat wire armature winding according to a second embodiment of the invention;
fig. 7 is a schematic diagram of a U-phase first branch winding of a 72-slot 6-pole 4-branch hairpin type flat wire armature winding according to a second embodiment of the invention;
fig. 8 is a V-phase winding schematic diagram of a 72-slot 6-pole 4-branch hairpin type flat wire armature winding according to a second embodiment of the invention;
fig. 9 is a W-phase winding schematic diagram of a 72-slot 6-pole 4-branch hairpin type flat wire armature winding according to a second embodiment of the invention;
fig. 10 is a U-phase winding schematic diagram of a 72-slot 6-pole 4-branch hairpin type flat wire armature winding according to a third embodiment of the invention;
fig. 11 is a schematic diagram of a U-phase first branch winding of a 72-slot 6-pole 4-branch hairpin type flat wire armature winding according to a third embodiment of the invention;
fig. 12 is a V-phase winding schematic diagram of a 72-slot 6-pole 4-branch hairpin type flat wire armature winding according to a third embodiment of the invention;
fig. 13 is a W-phase winding schematic diagram of a 72-slot 6-pole 4-branch hairpin type flat wire armature winding according to a third embodiment of the invention.
Detailed Description
In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Examples of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Embodiments of the present invention will be described in further detail with reference to the accompanying drawings and examples, which are provided to illustrate the present invention, but are not intended to limit the scope of the present invention.
In a first aspect, embodiments of the present invention provide a 72 slot 6 pole 4 branch hairpin flat wire armature winding comprising: the method comprises the steps of adopting three-phase parallel flat wires to be matched with hairpin wires to wind an annular stator with 8 layers of 72 stator slots on the inner side; the three phases are U phase, V phase and W phase.
The U-phase winding comprises four parallel branches, wherein the four branches are respectively formed by sequentially winding the flat wire from a first starting point, a second starting point, a third starting point and a fourth starting point which are positioned on the 1 st layer to the 8 th layer along the circumferential spiral direction in a matching manner, and then reversely spirally winding the 8 th layer to a first end point, a second end point, a third end point and a fourth end point which are positioned on the 1 st layer.
The V-phase winding rotates for 8 slots along the increasing direction of the slots relative to the U-phase winding.
The W-phase winding rotates for 16 slots along the increasing direction of the slots relative to the U-phase winding.
As shown in fig. 1, the winding provided in the embodiment of the present invention has 8 layers of slots, taking a case that a flat wire of three-phase parallel four branches passes through and winds around the 8 layers of 72 slots, the pole number is 6, and xy is defined as the y layer of the x slot, where x e [1, 72], y e [ a, h ], a-h are the numbers of 1-8 layers of conductors in the slot, a is one layer located in the slot, h is one layer located outside the slot, for example: 1a refers to the a layer of the 1 st stator slot.
In the table, 1-48 are sequences of marking current flowing through the slots, wherein the number 1 is the position where the branch current starts to flow, namely U+, the number 48 is the position where the branch current finally flows, namely U-, namely U1+ is the initial inflow point of the first branch current on the U phase, and U1-is the final outflow point of the first branch current on the U phase.
AA is a U-phase first branch, AB is a U-phase second branch, AC is a U-phase fourth branch, AA1, AB1, AC1 and AD1 are U-phase lead-out ends, AA48, AB48, AC48 and AD48 are neutral lead-out ends. In addition: the leading-out terminal and the neutral terminal can be exchanged, namely AA1, AB1, AC1 and AD1 can be used as neutral terminal, and AA48, AB48, AC48 and AD48 can be used as U-phase terminal.
Example 1
Fig. 2 is a schematic diagram of a U-phase winding of an 8-layer 72-slot 6-pole 4-branch hairpin type flat wire armature winding, wherein a winding link route from a first branch u+ to U-in the U-phase is defined as shown in fig. 3, and a flat wire fit hairpin connection route from u+ to U-in the first branch of the U-phase winding is as follows:
49a, 62b, 2c, 13d, 25e, 38f, 50g, 61h, 3h, 64g, 52f, 40e, 28d, 15c, 3b, 64a, 1a, 14b, 26c, 37d, 49e, 62f, 2g, 13h, 27h, 16g, 4f, 63e, 51d, 40c, 28b, 15a, 25a, 38b, 50c, 61d, 1e, 14f, 26g, 37h, 51h, 40g, 28f, 15e, 4d, 63c, 52b, 39 a. From 49a and finally from 39 a.
Specifically, current flows from the left end of the first hairpin, namely 49a, the right end of the first hairpin (AA 1, AA2 is a hairpin, the AA2 end is twisted right at the b-layer 62 slot and the AA4 arrow is a hairpin, namely the AA3 end is twisted c-layer 2 slot and the stripping end is twisted left) and welded together by the stripping end, namely the AA2 and AA3 are connected by welding, the right end of the second hairpin (AA 4 is twisted right at the d-layer 13 slot and the stripping end is twisted right) and the left end of the third hairpin (AA 5, AA6 is a hairpin, namely the AA5 end is twisted left at the e-layer 25 slot) are welded together by the stripping end after the stripping end is twisted (namely the AA4, AA5 is connected by welding), and the winding current flows to the layers a-b-c-d-e-f-g-h, h-e-c-b-a, and the final winding flows from the layer a-b-a-39 a, and so on.
The winding connection routes from U+ to U-in the U-phase second branch, the third branch and the fourth branch are analogized, the second branch flows in from the a-layer of the No. 50 slot and finally flows out from the a-layer of the No. 40 slot, the third branch flows in from the a-layer of the No. 51 slot and finally flows out from the a-layer of the No. 37 slot, the fourth branch flows in from the a-layer of the No. 52 slot and finally flows out from the a-layer of the No. 38 slot, and the detailed connection route is not repeated.
The winding method of the V-phase winding is that the U-phase winding is obtained by rotating 8 slots along the increasing direction of the slot number, as shown in fig. 4, a first branch flows in from the a layer of the slot number 57 and finally flows out from the a layer of the slot number 47, a second branch flows in from the a layer of the slot number 58 and finally flows out from the a layer of the slot number 48, a third branch flows in from the a layer of the slot number 59 and finally flows out from the a layer of the slot number 45, a fourth branch flows in from the a layer of the slot number 60 and finally flows out from the a layer of the slot number 46, and detailed connection routes are not repeated.
The winding method of the W-phase winding is that the U-phase winding is obtained by rotating 16 slots along the increasing direction of the slot number, as shown in fig. 5, a first branch flows in from the a layer of the 65 th slot and finally flows out from the a layer of the 55 th slot, a second branch flows in from the a layer of the 66 th slot and finally flows out from the a layer of the 56 th slot, a third branch flows in from the a layer of the 67 th slot and finally flows out from the a layer of the 53 th slot, a fourth branch flows in from the a layer of the 68 th slot and finally flows out from the a layer of the 54 th slot, and detailed connection routes are not repeated.
Example two
Fig. 6 is a schematic diagram of a U-phase winding of a 6-layer 72-slot 6-pole 4-branch hairpin type flat wire armature winding, wherein a winding link route from a first branch u+ to U-in the U-phase is defined as shown in fig. 7, and a flat wire fit hairpin connection route from u+ to U-in the first branch of the U-phase winding is as follows:
50a, 63b, 3c, 14d, 25e, 38f, 50g, 61h, 3h, 64g, 52f, 40e, 29d, 16c, 4b, 65a, 2a, 15b, 27c, 38d, 49e, 62f, 2g, 13h, 27h, 16g, 4f, 63e, 52d, 41c, 29b, 16a, 26a, 39b, 51c, 62d, 1e, 14f, 26g, 37h, 51h, 40g, 28f, 15e, 5d, 64c, 53b, 40 a. Inflow from 50a and finally outflow from 40 a.
Specifically, current flows from the left end of the first hairpin, 50a, the right end of the first hairpin (AA 1, AA2 is a hairpin, the AA2 end is twisted right at the b-layer 63 slot end) and the left end of the second hairpin (AA 3, AA4 arrow is a hairpin, i.e., the AA3 end is twisted left at the c-layer 3 slot end) are welded together by the stripping end twist (i.e., AA2 and AA3 are connected by welding), the right end of the second hairpin (AA 4 is twisted right at the d-layer 14 slot end and stripping end is twisted right) and the left end of the third hairpin (AA 5, AA6 is a hairpin, i.e., the AA5 end is twisted left at the e-layer 25 slot end) are also welded together by the stripping end twist (i.e., AA4, AA5 is connected by welding), the winding current flows from the a-b-c-d-e-f-g-h layer, h-g-f-h layer, h-e-c-b-a, and so forth in sequence from the d-layer 40 a-38 b-a).
The winding connection routes of U+ to U-in the U-phase second branch, the third branch and the fourth branch are analogized, the second branch flows in from the a-layer of the 51 # slot and finally flows out from the a-layer of the 41 # slot, the third branch flows in from the a-layer of the 52 # slot and finally flows out from the a-layer of the 38 # slot, the fourth branch flows in from the a-layer of the 53 # slot and finally flows out from the a-layer of the 39 # slot, and the detailed connection route is not repeated.
The winding method of the V-phase winding is that the U-phase winding is obtained by rotating 8 slots along the increasing direction of the slot number, as shown in fig. 8, a first branch flows in from the a layer of the slot number 58, flows out from the a layer of the slot number 48, a second branch flows in from the a layer of the slot number 59, flows out from the a layer of the slot number 49, a third branch flows in from the a layer of the slot number 60, flows out from the a layer of the slot number 46, a fourth branch flows in from the a layer of the slot number 61, and flows out from the a layer of the slot number 47, and detailed connection routes are not repeated.
The winding method of the W-phase winding is that the U-phase winding is obtained by rotating 16 slots along the increasing direction of the slot number, as shown in fig. 9, a first branch flows in from the a layer of the 66 th slot and flows out from the a layer of the 56 th slot, a second branch flows in from the a layer of the 67 th slot and flows out from the a layer of the 57 th slot, a third branch flows in from the a layer of the 68 th slot and flows out from the a layer of the 54 th slot, a fourth branch flows in from the a layer of the 69 th slot and flows out from the a layer of the 55 th slot, and detailed connection routes are not repeated.
Example III
Fig. 10 is a schematic diagram of a U-phase winding of a 6-layer 72-slot 6-pole 4-branch hairpin type flat wire armature winding, wherein a winding link route defining a first branch u+ to U-in the U-phase is shown in fig. 11, and a flat wire mating hairpin connection route of u+ to U-in the first branch of the U-phase winding is:
49a, 63b, 2c, 14d, 25e, 39f, 50g, 62h, 4h, 64g, 53f, 40e, 29d, 15c, 4b, 64a, 1a, 15b, 26c, 38d, 49e, 63f, 2g, 14h, 28h, 16g, 5f, 63e, 52d, 40c, 29b, 15a, 25a, 39b, 50c, 62d, 1e, 15f, 26g, 38h, 52h, 40g, 29f, 15e, 5d, 63c, 53b, 39 a. From 49a and finally from 39 a.
Specifically, current flows from the left end of the first hairpin, namely 49a, the right end of the first hairpin (AA 1, AA2 is a hairpin, the AA2 end is twisted right at the stripping end of the number b slot 63) and the left end of the second hairpin (AA 3, AA4 arrow is a hairpin, namely the AA3 end is twisted left at the stripping end of the number 2 slot c) are welded together by the stripping end twisting (namely the AA2 and AA3 are connected by welding), the right end of the second hairpin (AA 4 is twisted right at the layer d of the number 14 slot and the stripping end is twisted right) and the left end of the third hairpin (AA 5, AA6 is a hairpin, namely the AA5 end is twisted left at the stripping end of the number 25 slot e) are also welded together by the stripping end twisting (namely the AA4, AA5 is connected by welding), the winding current flows to the layers a-b-c-d-e-f-g-h, h-e-d-a, h-d-a, and so on the winding from the layer a-b-a, 39a, and so on.
The winding connection routes of U+ to U-in the U-phase second branch, the third branch and the fourth branch are analogized, the second branch flows in from the a-layer of the No. 50 slot and finally flows out from the a-layer of the No. 40 slot, the third branch flows in from the a-layer of the No. 51 slot and finally flows out from the a-layer of the No. 37 slot, the fourth branch flows in from the a-layer of the No. 52 slot and finally flows out from the a-layer of the No. 38 slot, and the detailed connection route is not repeated.
The winding method of the V-phase winding is that the U-phase winding is obtained by rotating 8 slots along the increasing direction of the slot number, as shown in fig. 12, a first branch flows in from the a layer of the slot number 57 and finally flows out from the a layer of the slot number 47, a second branch flows in from the a layer of the slot number 58 and finally flows out from the a layer of the slot number 48, a third branch flows in from the a layer of the slot number 59 and finally flows out from the a layer of the slot number 45, a fourth branch flows in from the a layer of the slot number 60 and finally flows out from the a layer of the slot number 46, and detailed connection routes are not repeated.
The winding method of the W-phase winding is that the U-phase winding is obtained by rotating 16 slots along the increasing direction of the slot number, as shown in fig. 13, a first branch flows in from the a layer of the 65 th slot and finally flows out from the a layer of the 55 th slot, a second branch flows in from the a layer of the 66 th slot and finally flows out from the a layer of the 56 th slot, a third branch flows in from the a layer of the 67 th slot and finally flows out from the a layer of the 53 th slot, a fourth branch flows in from the a layer of the 68 th slot and finally flows out from the a layer of the 54 th slot, and detailed connection routes are not repeated.
In the embodiment of the invention, the flat wire armature windings with 8 layers are adopted, but in the specific implementation process, the winding of the flat wire armature windings with even layers such as 4, 6, 10, 12 and the like can be realized by deleting or increasing the number of layers of different layers of crossing wires, and the winding can also be realized by moving the upper 4 layers or the lower four layers of windings left and right by a certain number of slots or moving the odd layers or the even layers left and right by a certain number of slots, so the winding method adopted by the invention and the hairpin coil matched with the winding method are not limited to the winding of the flat wire armature windings with 8 layers in the embodiment.
The winding is beneficial to the improvement of the full rate of the motor slot so as to generate higher magnetic field intensity, improve the motor power, balance the potential of each branch, no circulation problem, simple winding structure, good process manufacturability, suitability for batch production and theoretical basis for motor stator products.
In a second aspect, an embodiment of the present invention further provides an electric machine, including: a rotor and a 72 slot 6 pole 4 branch hairpin flat wire armature winding according to any one of the embodiments of the first aspect; the rotor is rotatable relative to a 72 slot 6 pole 4 branch hairpin armature winding.
The motor adopts the 72-slot 6-pole 4-branch hairpin type flat wire armature winding according to the embodiment, and the specific structure of the 72-slot 6-pole 4-branch hairpin type flat wire armature winding refers to the embodiment, and the motor adopts all the technical schemes of all the embodiments, so that the motor has at least all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention 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 invention.
Claims (2)
1. A 72 slot 6 pole 4 branch hairpin armature winding comprising: the method comprises the steps of adopting three-phase parallel flat wires to be matched with hairpin wires to wind an annular stator with 8 layers of 72 stator slots on the inner side; the three phases are a U phase, a V phase and a W phase;
the U-phase winding comprises four parallel branches, wherein the four branches are respectively formed by sequentially winding a flat wire from a first starting point, a second starting point, a third starting point and a fourth starting point which are positioned on the 1 st layer to the 8 th layer along the circumferential spiral direction in a matching manner, and then reversely spirally winding the 8 th layer to a first end point, a second end point, a third end point and a fourth end point which are positioned on the 1 st layer;
the V-phase winding rotates for 8 slots along the increasing direction of the slots relative to the U-phase winding to obtain the V-phase winding;
the W-phase winding rotates for 16 slots along the increasing direction of the slots relative to the U-phase winding to obtain the W-phase winding;
when the flat wire with three-phase parallel four branches is matched with the hairpin to pass through and wind 8 layers of 72 slots, the pole number is 6, and the branch number is 4; defining xy as the y layer of the x slot position, wherein x is [1, 72], y is [ a, h ], a is the 1 st layer and is positioned in the slot, h is the 8 th layer and is positioned outside the slot, U1+ is the initial inflow point of the first branch current on the U phase, U1-is the final outflow point of the first branch current on the U phase, and the first branch of the U phase winding is:
49a→62b→2c→13d→25e→38f→50g→61h→3h→64g→52f→40e→28d→15c→3b→64a→1a→14b→26c→37d→49e→62f→2g→13h→27h→16g→4f→63e→51d→40c→28b→15a→25a→38b→50c→61d→1e→14f→26g→37h→51h→40g→28f→15e→4d→63c→52b→39a；
or, the first branch of the U-phase winding is:
50a→63b→3c→14d→25e→38f→50g→61h→3h→64g→52f→40e→29d→16c→4b→65a→2a→15b→27c→38d→49e→62f→2g→13h→27h→16g→4f→63e→52d→41c→29b→16a→26a→39b→51c→62d→1e→14f→26g→37h→51h→40g→28f→15e→5d→64c→53b→40a；
or, the first branch of the U-phase winding is:
49a→63b→2c→14d→25e→39f→50g→62h→4h→64g→53f→40e→29d→15c→4b→64a→1a→15b→26c→38d→49e→63f→2g→14h→28h→16g→5f→63e→52d→40c→29b→15a→25a→39b→50c→62d→1e→15f→26g→38h→52h→40g→29f→15e→5d→63c→53b→39a。
2. an electric machine, comprising: a rotor and a 72 slot 6 pole 4 branch hairpin flat wire armature winding of claim 1; the rotor is rotatable relative to the 72 slot 6 pole 4 branch hairpin flat wire armature winding.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004364464A (en) * | 2003-06-09 | 2004-12-24 | Hitachi Ltd | Alternator for vehicle |
| CN116131495A (en) * | 2023-01-06 | 2023-05-16 | 博格华纳汽车零部件（武汉）有限公司 | Flat wire motor winding, stator and motor |
| CN116961292A (en) * | 2023-09-21 | 2023-10-27 | 博格华纳汽车零部件（武汉）有限公司 | 72-slot 6-pole hairpin type flat wire armature winding and motor |
| CN116995839A (en) * | 2023-09-26 | 2023-11-03 | 博格华纳汽车零部件（武汉）有限公司 | 72-slot 6-pole hairpin type flat wire armature winding and motor |
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| US11056943B2 (en) * | 2018-07-03 | 2021-07-06 | GM Global Technology Operations LLC | Stator assembly with electrically balanced conductor layers |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004364464A (en) * | 2003-06-09 | 2004-12-24 | Hitachi Ltd | Alternator for vehicle |
| CN116131495A (en) * | 2023-01-06 | 2023-05-16 | 博格华纳汽车零部件（武汉）有限公司 | Flat wire motor winding, stator and motor |
| CN116961292A (en) * | 2023-09-21 | 2023-10-27 | 博格华纳汽车零部件（武汉）有限公司 | 72-slot 6-pole hairpin type flat wire armature winding and motor |
| CN116995839A (en) * | 2023-09-26 | 2023-11-03 | 博格华纳汽车零部件（武汉）有限公司 | 72-slot 6-pole hairpin type flat wire armature winding and motor |
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