CN116979732B - Flat wire winding and motor - Google Patents
Flat wire winding and motor Download PDFInfo
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- CN116979732B CN116979732B CN202311229364.2A CN202311229364A CN116979732B CN 116979732 B CN116979732 B CN 116979732B CN 202311229364 A CN202311229364 A CN 202311229364A CN 116979732 B CN116979732 B CN 116979732B
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- 238000004804 winding Methods 0.000 title claims abstract description 225
- 238000003466 welding Methods 0.000 claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000012163 sequencing technique Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Windings For Motors And Generators (AREA)
Abstract
The invention discloses a flat wire winding and a motor, wherein the flat wire winding comprises a stator winding wound on each stator slot layer of a stator core, the stator winding comprises a plurality of flat wires, straight line sections of the flat wires are respectively inserted into 2i and 2i-1 slot layers, spans on crown sides of two adjacent flat wires positioned on the innermost and outermost two slot layers are Y+1 and Y-1 respectively, spans on crown sides of two adjacent flat wires positioned on an intermediate slot layer are Y and Y+2 respectively, at least part of the flat wires are connected with pins corresponding to the straight line sections of the 2i slot layer and the 2i+1 slot layer, the spans are Y or Y-1, the rest of the flat wires are connected with the pins corresponding to the straight line sections of the 2i slot layer and the 2i-1 slot layer, the welding side corresponding to the innermost two slot layers is Y, the span on the welding side of the intermediate slot layer is Y-1, the flat wire winding formed in the winding mode has a simple structure, the required flat wire types are few, and various different requirements can be met, and the manufacturing cost is reduced.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a flat wire winding and a motor.
Background
The flat wire winding has the advantages of high slot filling rate, high power density, good temperature performance and the like. In the design and manufacture of flat wire motors, different winding arrangement modes exist, the different winding arrangement modes can directly influence the complexity of stator manufacture, in the prior art, the types of flat wires required by flat wire winding are multiple, the winding scheme is not easy to deform, the winding process is complex, the manufacturing cost is high, and an improvement space exists.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a flat wire winding, which has a simple structure, requires few types of flat wires, can perform various different deformations to meet different requirements, and has low manufacturing cost.
The invention further provides a motor.
According to an embodiment of the first aspect of the invention, the flat wire winding comprises stator windings wound on each stator slot layer of a stator core, wherein the stator windings are formed with 2K slot layers;
the stator winding comprises a plurality of flat wires, and the flat wires respectively comprise: the connecting section is connected with one ends of the two straight line sections, the pins are arranged at the other ends of the straight line sections, and the two pins of the same flat wire are respectively bent outwards;
the flat wire comprises a crown side, the crown side is arranged on one side of the stator core, pins of two adjacent flat wires are connected to form a welding side of the stator winding, and the welding side is arranged on the other side of the stator core;
the two pins of the flat wire extend outwards respectively, the straight line section of the flat wire is inserted into the 2i and 2i-1 groove layers respectively, the straight line section inserted into the 2i groove layer is positioned at one side of the straight line section inserted into the 2i-1 groove layer in the first direction, wherein the spans of the crown sides of two adjacent flat wires positioned on the 1 st and 2 nd groove layers, the 2K and 2K-1 st groove layers are Y+1 and Y-1 respectively, and the spans of the crown sides of two adjacent flat wires positioned on the 2a and 2a-1 st groove layers are Y and Y+2 respectively, and 1 < a < K;
At least part of pins corresponding to the straight line segments arranged on the 2i slot layer are connected with the pins corresponding to the straight line segments of the 2i+1 slot layer, so that the cross-layer connection of the stator winding is realized, the rest part of pins corresponding to the straight line segments arranged on the 2i-1 slot layer are connected with the pins corresponding to the straight line segments, the welding sides of the stator winding are formed after the pins of the two flat wires are connected,
the welding side spans of the 2 nd groove layer and the 3 rd groove layer, the 2K-2 nd groove layer and the 2K-1 st groove layer are Y, and the welding side spans of the 2c groove layer and the 2c+1 st groove layer are Y-1, wherein c is more than 1 and less than K-1;
the welding side span of the 1 st groove layer corresponding to the 2 nd groove layer, the 2K groove layer and the 2K-1 groove layer is Y, the welding side span of the 2b groove layer corresponding to the 2b-1 groove layer is Y-1, b is more than 1 and less than K,
the ratio of the number of stator slots formed in the stator core to the number of motor poles is Y, K, i, a, b, c is a positive integer, and K is more than 2.
According to the flat wire winding provided by the embodiment of the application, the flat wire winding formed in the winding mode is simple in structure, few in required flat wire types and capable of being deformed in various ways to meet different requirements, and the manufacturing cost is reduced.
According to some embodiments of the invention, the stator winding comprises:
The crown end span of the first flat wire is Y+1, and the first flat wire comprises two pins with the spans of (Y-1)/2 and (Y+1)/2 respectively;
the span of the crown end of the second flat wire is Y-1, and the second flat wire comprises two pins with the spans of (Y-1)/2 and (Y+1)/2 respectively;
the crown end span of the third flat wire is Y, and the third flat wire comprises two pins with the span of (Y-1)/2;
a fourth flat wire, the span of the crown end of the fourth flat wire is Y+2, and the fourth flat wire comprises two pins with the span of (Y-1)/2,
the straight line segments corresponding to the pins with the span of (Y-1)/2 in the first flat wire and the second flat wire are inserted in the 1 st slot layer and the 2 nd K slot layer, and the straight line segments corresponding to the pins with the span of (Y+1)/2 are inserted in the 2 nd slot layer and the 2K-1 st slot layer.
According to some embodiments of the invention, the stator winding comprises a D-phase winding, each phase winding comprises at least E branches, each branch comprises a plurality of flat wires connected in series in sequence, the number of slots of the stator slots formed in the stator core is F, e=4g, f=h×e×d, and h and g are positive integers.
According to some embodiments of the invention, the E branches included in each phase winding may be connected in series or parallel, or a plurality of branches may be connected in series and then connected in parallel.
According to some embodiments of the present invention, the stator core is provided with 48 slots, the number of poles of the motor is 8, the stator winding comprises three phases including U-phase, V-phase and W-phase, each phase winding has the same winding mode, each stator slot is provided with 8 slot layers m, n, o, p, q, r, s, t, each phase winding comprises four branches,
the winding route of the U-phase first branch of the stator winding is as follows:
1m-8n-14m-19n-25m-32n-38m-43n-1o-9p-14o-20p-25o-33p-38o-44p-1q-9r-14q-20r-25q-33r-38q-44r-2s-9t-15s-20t-26s-33t-39s-44t, wherein pins of flat wires corresponding to the mth slot layer of the 1 st stator slot and the tth slot layer of the 44 th stator slot can respectively form a lead-in end and a lead-out end of the first branch;
the winding route of the U-phase second branch of the stator winding is as follows:
2m-7n-13m-20n-26m-31n-37m-44n-2o-8p-13o-21p-26o-32p-37o-45p-2q-8r-13q-21r-26q-32r-37q-45r-3s-8t-14s-21t-27s-32t-38s-45t, wherein pins of flat wires corresponding to the mth slot layer of the 2 nd stator slot and the tth slot layer of the 45 th stator slot can respectively form a lead-in end and a lead-out end of the second branch;
the winding route of the U-phase third branch of the stator winding is as follows:
2t-45s-39t-32s-26t-21s-15t-8s-2r-44q-39r-31q-26r-20q-15r-7q-2p-44o-39p-31o-26p-20o-15p-7o-1n-44m-38n-31m-25n-20m-14n-7m, wherein pins of flat wires corresponding to the t slot layer of the 2 nd stator slot and the m slot layer of the 7 th stator slot can respectively form a lead-in end and a lead-out end of the third branch;
the winding route of the U-phase fourth branch of the stator winding is as follows:
3t-44s-38t-33s-27t-20s-14t-9s-3r-43q-38r-32q-27r-19q-14r-8q-3p-43o-38p-32o-27p-19o-14p-8o-2n-43m-37n-32m-26n-19m-13n-8m, wherein pins of flat wires corresponding to the 3 rd stator slot t slot layer and the 8 th stator slot m slot layer can respectively form a lead-in end and a lead-out end of the fourth branch.
According to some embodiments of the present invention, the stator core is provided with 48 slots, the number of poles of the motor is 8, the stator winding comprises three phases including U-phase, V-phase and W-phase, each phase winding has the same winding mode, each stator slot is provided with 6 slot layers m, n, o, p, q, r, each phase winding comprises four branches,
the winding route of the U-phase first branch of the stator winding is as follows:
1m-8n-14m-19n-25m-32n-38m-43n-1o-9p-14o-20p-25o-33p-38o-44p-2q-9r-15q-20r-26q-33r-39q-44r, wherein pins of flat wires corresponding to the mth slot layer of the 1 st stator slot and the mth slot layer of the 44 th stator slot can respectively form an inlet end and an outlet end of the first branch;
The winding route of the U-phase second branch of the stator winding is as follows:
2m-7n-13m-20n-26m-31n-37m-44n-2o-8p-13o-21p-26o-32p-37o-45p-3q-8r-14q-21r-27q-32r-38q-45r, wherein pins of flat wires corresponding to the mth slot layer of the 2 nd stator slot and the mth slot layer of the 45 th stator slot can respectively form an inlet end and an outlet end of the second branch;
the winding route of the U-phase third branch of the stator winding is as follows:
2r-45q-39r-32q-26r-21q-15r-8q-2p-44o-39p-31o-26p-20o-15p-7o-1n-44m-38n-31m-25n-20m-14n-7m, wherein pins of flat wires corresponding to the 2 nd stator slot r slot layer and the 7 th stator slot m slot layer can respectively form an inlet end and an outlet end of the third branch;
the winding route of the U-phase fourth branch of the stator winding is as follows:
3r-44q-38r-33q-27r-20q-14r-9q-3p-43o-38p-32o-27p-19o-14p-8o-2n-43 n-32m-26n-19m-13n-8m, wherein pins of flat wires corresponding to the 3 rd stator slot r slot layer and the 8 th stator slot m slot layer can respectively form an inlet end and an outlet end of the fourth branch.
According to some embodiments of the present invention, the stator core is provided with 48 slots, the number of poles of the motor is 8, the stator winding comprises three phases including U-phase, V-phase and W-phase, each phase winding has the same winding mode, each stator slot is provided with 6 slot layers m, n, o, p, q, r, each phase winding comprises four branches,
The winding route of the U-phase first branch of the stator winding is as follows:
1m-8n-14m-19n-25m-32n-38m-43n-1o-9p-14o-20p-25o-33p-38o-44p-2q-9r-15q-20r-26q-33r-39q-44r, wherein pins of flat wires corresponding to the mth slot layer of the 1 st stator slot and the mth slot layer of the 44 th stator slot can respectively form an inlet end and an outlet end of the first branch;
the winding route of the U-phase second branch of the stator winding is as follows:
13m-20n-26m-31n-37m-44n-2m-7n-13o-21p-26o-32p-37o-45p-2o-8p-14q-21r-27q-32r-38q-45r-3q-8r, wherein pins of flat wires corresponding to the 13 th stator slot mth slot layer and the 8 th stator slot mth slot layer can respectively form an inlet end and an outlet end of the second branch;
the winding route of the U-phase third branch of the stator winding is as follows:
2r-45q-39r-32q-26r-21q-15r-8q-2p-44o-39p-31o-26p-20o-15p-7o-1n-44m-38n-31m-25n-20m-14n-7m, wherein pins of flat wires corresponding to the 2 nd stator slot r slot layer and the 7 th stator slot m slot layer can respectively form an inlet end and an outlet end of the third branch;
the winding route of the U-phase fourth branch of the stator winding is as follows:
14r-9q-3r-44q-38r-33q-27r-20q-14p-8o-3p-43o-38p-32o-27p-19o-13n-8m-2n-43m-37n-32m-26n-19m, wherein pins of flat wires corresponding to the 14 th stator slot r slot layer and the 19 th stator slot m slot layer can respectively form an inlet end and an outlet end of the fourth branch.
An electric machine according to a second aspect of the present invention includes a stator core and the aforementioned flat wire winding, wherein a plurality of stator slots are provided in a circumferential direction of the stator core, and the flat wire winding is wound around the stator slots.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a stator winding arrangement in accordance with an embodiment of the present invention;
FIG. 2 is a second stator winding wire arrangement in accordance with an embodiment of the present invention;
FIG. 3 is a stator winding wire layout diagram III according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a flat wire according to an embodiment of the present invention.
Reference numerals:
flat wire 10, straight line segment 1, connecting segment 2, pin 3.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
A flat wire winding according to an embodiment of the present invention is described below with reference to fig. 1 to 4.
The motor adopting the flat wire winding not only has higher torque density and power density, but also has higher motor efficiency. The flat wire winding includes: the stator winding of coiling on each stator slot layer of stator core, stator winding is formed with 2K slot layer, wherein, set up a plurality of stator slots of arranging along stator core circumference on the stator core, after stator winding winds, every stator slot has the 2K slot layer of arranging along stator core radial direction, and wherein K is the positive integer that is greater than 2, namely can hold the even number layer of layers that is greater than 4 in the stator slot, like: 6. 8, 10, etc.
The stator winding comprises a plurality of flat wires 10, the flat wires 10 are formed into a hairpin shape, each flat wire 10 comprises two straight-line sections 1 inserted in a stator groove, two pins 3 respectively positioned at one ends of the two straight-line sections 1, a connecting section 2 connected with the other ends of the two straight-line sections 1, and the two pins 3 of the flat wires 10 respectively extend outwards so as to be connected together in series through welding between two adjacent flat wires 10 on the same branch. Since both the pins 3 of each flat wire 10 in the stator winding extend outward, the clockwise pin 3 of any one flat wire in the stator winding is connected to the counterclockwise pin 3 of the flat wire 10 located in the span corresponding to the clockwise side of the flat wire, and the counterclockwise pin 3 is connected to the clockwise pin 3 of the flat wire 10 located in the span corresponding to the counterclockwise side of the flat wire 10.
Firstly, inserting straight line segments of each flat wire into a stator slot before one axial side of a stator core, wherein the straight line segments of each flat wire are respectively inserted into 2i and 2i-1 slot layers, the straight line segment inserted into the 2i slot layer is positioned at one side of the straight line segment inserted into the 2i-1 slot layer in a first direction, namely, two straight line segments of one flat wire are respectively inserted into a 1 st slot layer and a 2 nd slot layer, a 3 rd slot layer and a 4 th slot layer, a 5 th slot layer and a 6 th slot layer or a 7 th slot layer and an 8 th slot layer, wherein the first direction can be a clockwise direction or a anticlockwise direction, and each flat wire is sequentially inserted into the stator slot along the same direction.
The spans of the crown sides of two adjacent flat wires positioned on the 1 st and 2 nd slot layers are Y+1 and Y-1 respectively, that is, in the stator winding, two kinds of flat wires positioned on the 1 st and 2 nd slot layers are arranged, one kind of flat wire has the span of the crown side of Y+1, the other kind of flat wire has the span of the crown side of Y-1, and the two kinds of different flat wires are staggered in the circumferential direction of the stator core.
Namely, one side pin of a flat wire with a crown side span of Y+1 is arranged in a 1 st, 3 rd, 5 th and other singular sorting stator slots of the 1 st slot layer, the other side pin of a flat wire with a crown side span of Y+1 is arranged in a 2 nd, 4 th, 6 th and other even sorting stator slots of the 2 nd slot layer, one side pin of a flat wire with a crown side span of Y-1 is arranged in a 2 nd, 4 th, 6 th and other side pin of a flat wire with a crown side span of Y-1 is arranged in a 2 nd, 3 rd, 5 th and other singular sorting stator slots of the 2 nd slot layer.
Or, 1 st, 3 rd, 5 th etc. singular sequencing number stator slots of the 1 st slot layer are internally provided with one side pin of a flat wire with a crown side span of Y-1, 2 nd, 4 th, 6 th etc. even sequencing number stator slots of the 2 nd slot layer are internally provided with the other side pin of the flat wire with the crown side span of Y-1, 2 nd, 4 th, 6 th etc. even sequencing number stator slots of the 1 st slot layer are internally provided with one side pin of the flat wire with the crown side span of Y+1, and 1 st, 3 rd, 5 th etc. singular sequencing number stator slots of the 2 nd slot layer are internally provided with the other side pin of the flat wire with the crown side span of Y+1.
The 2K slot layer and the 1 st slot layer are respectively an outermost slot layer or an innermost slot layer of the stator slot with the inner diameter upwards, and the 2K-1 slot layer is a slot layer adjacent to the 2K slot layer. The spans of the crown sides of two adjacent flat wires positioned on the 2K and 2K-1 slot layers are Y+1 and Y-1 respectively, that is, in the stator winding, two types of flat wires positioned on the 2K and 2K-1 slot layers are arranged, one type of flat wire has the span of Y+1, the other type of flat wire has the span of Y-1, and the two types of different flat wires are staggered in the circumferential direction of the stator core.
Namely, one side pin of a flat wire with a crown side span of Y+1 is arranged in a 1 st, 3 rd, 5 th and other singular sorting stator slots of the 2K-1 slot layer, the other side pin of a flat wire with a crown side span of Y+1 is arranged in a 2 nd, 4 th, 6 th and other even sorting stator slots of the 2K-1 slot layer, one side pin of a flat wire with a crown side span of Y-1 is arranged in a 2 nd, 4 th, 6 th and other side pin of a flat wire with a crown side span of Y-1 is arranged in a 1 st, 3 rd, 5 th and other singular sorting stator slots of the 2K slot layer.
Or, 1 st, 3 rd, 5 th etc. singular sequencing number stator slots of the 2K-1 slot layer are internally provided with one side pin of the flat wire with the crown side span of Y-1, 2 nd, 4 th, 6 th etc. even sequencing number stator slots of the 2K slot layer are internally provided with the other side pin of the flat wire with the crown side span of Y-1, 2 nd, 4 th, 6 th etc. even sequencing number stator slots of the 2K-1 slot layer are internally provided with one side pin of the flat wire with the crown side span of Y+1, and 1 st, 3 rd, 5 th etc. singular sequencing number stator slots of the 2K slot layer are internally provided with the other side pin of the flat wire with the crown side span of Y+1.
The spans of the crown sides of two adjacent flat wires positioned on the 2a and 2a-1 slot layers are Y and Y+2 respectively, wherein a is a positive integer smaller than K and larger than 1, that is, when K=3, the 3 rd slot layer and the 4 th slot layer in the stator slot are provided with two flat wires of which the spans of the crown sides are Y and Y+2 respectively; when k=4, the 3 rd slot layer and the 4 th slot layer in the stator slot are provided with two flat wires with crown side spans of Y and Y+2 respectively, and the 5 th slot layer and the 6 th slot layer in the stator slot are provided with two flat wires with crown side spans of Y and Y+2 respectively; when k=5, the 3 rd and 4 th slot layers in the stator slot are provided with two kinds of flat wires whose crown side spans are Y and y+2, the 5 th and 6 th slot layers in the stator slot are provided with two kinds of flat wires whose crown side spans are Y and y+2, and the 7 th and 8 th slot layers in the stator slot are provided with two kinds of flat wires whose crown side spans are Y and y+2, respectively.
Further, the crown side spans of two adjacent flat wires positioned on the 2a and 2a-1 slot layers are Y and Y+2 respectively, namely, one side pin of the flat wire with the crown side span of Y+2 is arranged in the 1 st, 3 rd, 5 th and other singular sorting stator slots of the 2a-1 slot layer, the other side pin of the flat wire with the crown side span of Y+2 is arranged in the 1 st, 3 rd, 5 th and other singular sorting stator slots of the 2a slot layer, one side pin of the flat wire with the crown side span of Y is arranged in the 2 nd, 4 th, 6 th and other even sorting stator slots of the 2a slot layer, and the other side pin of the flat wire with the crown side span of Y is arranged in the 2 nd, 4 th, 6 th and other even sorting stator slots of the 2a slot layer.
Or, one side pin of the flat wire with the crown side span of Y is arranged in the 1 st, 3 rd, 5 th and other singular sorting stator slots of the 2a-1 th slot layer, the other side pin of the flat wire with the crown side span of Y is arranged in the 1 st, 3 rd, 5 th and other singular sorting stator slots of the 2a-1 th slot layer, one side pin of the flat wire with the crown side span of Y+2 is arranged in the 2 nd, 4 th, 6 th and other singular sorting stator slots of the 2a slot layer.
After the flat wire is inserted into the stator slot, the pins of the flat wire are positioned at the other axial side of the stator core, and the pins of a plurality of flat wires are connected together to form a series branch, wherein the pins of the two flat wires are connected to form a welding side of the stator winding.
The number of stator slots arranged on the stator core is 2Y multiplied by beta, beta is a positive integer, and when beta is 1, namely the number of stator slots arranged on the stator core is 2Y, pins corresponding to straight line segments arranged on the 2i slot layer are connected with pins corresponding to straight line segments of the 2i+1 slot layer.
When beta is larger than 1, namely the number of stator slots arranged on the stator core is larger than 2Y, 2Y pins corresponding to the straight line segments arranged on the 2i slot layer are connected with pins corresponding to the straight line segments of the 2i+1 slot layer, so that cross-layer connection of the stator winding is realized, and the rest parts are connected with pins corresponding to the straight line segments of the 2i-1 slot layer.
Pins corresponding to the straight line segments arranged on the 2 i-th groove layer are connected with pins corresponding to the straight line segments of the 2i-1 th groove layer. Namely, the pins corresponding to the straight line segments arranged on the 1 st groove layer are connected with the pins corresponding to the straight line segments arranged on the 2 nd groove layer, the pins corresponding to the straight line segments arranged on the 2K groove layer are connected with the pins corresponding to the straight line segments arranged on the 2K-1 groove layer, and the welding side spans corresponding to the 1 st groove layer, the 2 nd groove layer, the 2K groove layer and the 2K-1 groove layer are Y.
At the moment, the pin connection corresponding to the straight line segment arranged on the 1 st slot layer and the pin connection corresponding to the straight line segment arranged on the 2 nd slot layer can connect the flat wires arranged on the 1 st slot layer and the 2 nd slot layer in series, so that the flat wires arranged on the 1 st slot layer and the 2 nd slot layer are connected in series to form 2Y annular branches arranged adjacently; the pin connection corresponding to the straight line segment arranged on the 2K-1 slot layer and the pin connection corresponding to the straight line segment arranged on the 2K slot layer can connect the flat wires arranged on the 2K-1 slot layer and the 2K slot layer in series, so that the flat wires arranged on the 2K-1 slot layer and the 2K slot layer are connected in series to form 2Y annular branches which are adjacently arranged.
The welding side span corresponding to the 2b-1 groove layer and the 2b-1 groove layer is Y-1, b is an integer smaller than K and larger than 1, at this time, pins corresponding to the straight line segment arranged on the 2b-1 groove layer and pins corresponding to the straight line segment of the 2b groove layer can be connected in series with flat wires arranged on the 2b-1 groove layer and the 2b groove layer, so that the flat wires arranged on the 2b-1 groove layer and the 2b groove layer can also be connected in series to form 2Y annular branches adjacently arranged.
Further, there are 2Y pins corresponding to the straight line segment provided in the 2 i-th groove layer, and are not connected to pins corresponding to the straight line segment provided in the 2i-1 th groove layer, but are connected to pins corresponding to the straight line segment provided in the 2i+1 th groove layer. Therefore, 2Y unit branches are formed by disconnecting 2Y annular branches which are adjacently arranged and are formed by serially connecting flat wires arranged on the 2i slot layer and the 2i-1 slot layer, and the cross-layer connection is realized through pin connection corresponding to the straight line segments arranged on the 2i slot layer and the 2i+1 slot layer, so that the stator winding is formed into 2Y branches formed by serially connecting a plurality of unit branches. The 2Y branches are uniformly arranged on each pole and each phase of the stator winding.
The stator slots formed in the stator core are sequentially ordered along the first direction, there are 2Y pins corresponding to straight line segments on the 2i slot layer and are not connected with pins corresponding to straight line segments on the 2i-1 slot layer, and the pins corresponding to the straight line segments may be respectively λ1×2y+1 stator slots, λ2×2y+2 stator slots on the 2i slot layer, λ3×2y+3 stator slots on the 2i slot layer, λ4×2y+4 stator slots on the 2i slot layer, … … λ2y×2y+2y stator slots, and pins corresponding to the straight line segments are connected with pins corresponding to straight line segments on the 2i+1 slot layer, where λ1, λ2, λ3, and λ4 … … λ2Y are any integer less than β and not less than 0.
Further, the welding side span of the 2 nd groove layer and the 3 rd groove layer, and the welding side span of the 2K-2 nd groove layer and the 2K-1 st groove layer are Y, that is, the pins corresponding to the straight line segments of the X1 st stator groove arranged on the 2 nd groove layer are connected with the pins corresponding to the straight line segments of the X1+Y stator grooves on the 3 rd groove layer. Pins corresponding to straight line segments of the X2 stator slots of the 2K-2 slot layer are connected with pins corresponding to straight line segments of the X2+Y stator slots of the 2K-1 slot layer.
The welding side span of the 2c slot layer and the 2c+1 slot layer is Y-1, and the pin corresponding to the straight line segment of the X3 stator slot arranged on the 2c slot layer is connected with the pin corresponding to the straight line segment of the X3+Y-1 stator slot on the 2c+1 slot layer. c is an integer greater than 1 and less than K-1. That is, when k=8, there is a pin corresponding to the straight line segment of the X3 th stator slot provided in the 4 th slot layer connected to a pin corresponding to the straight line segment of the X3+y-1 th stator slot provided in the 5 th slot layer.
For example, when the motor includes three phases and the number of poles is 8, the number of stator slots is 48, y=6, β=4, the stator winding is formed with 12 branches, and each phase includes four branches. The pins corresponding to the 12 straight line segments in the 2 nd slot layer are connected with the pins corresponding to the straight line segments in the 3 rd slot layer, and are pins corresponding to the straight line segments in the λ1x12+1 th stator slot, the λ2x12+2 nd stator slot, the λ3x12+3 rd stator slot, the λ4x12+4 th stator slot and the … … λ1x12+12 th stator slot respectively. λ1=0, λ2=0, λ3=0, λ4=0, λ5=1, λ6=1, λ7=1, λ8=1, λ9=2, λ10=2, λ11=2, λ12=2.
Therefore, the stator winding is connected in such a way that leads corresponding to the 7 th to 10 th stator slots, the 23 rd to 26 th stator slots and the 39 th to 42 th stator slots of the 1 st slot layer are formed as outgoing lines or incoming lines of 12 branches formed by the stator winding.
The leads corresponding to the straight line segments of the 1 st slot layer, the 1 st-6 th slot, the 11 th-22 th slot, the 27 th-38 th slot and the 43 th-48 th slot are connected with the leads corresponding to the straight line segments of the 5 th-16 th slot, the 21 st-32 th slot and the 37 th-48 th slot of the 2 nd slot layer in a Y-shaped span;
the leads corresponding to the straight line segments of the 1 st to 4 th stator slots, the 17 th to 20 th stator slots and the 33 rd to 36 th stator slots of the 2 nd slot layer are connected with the leads corresponding to the straight line segments of the 7 th to 10 th stator slots, the 23 rd to 26 th stator slots and the 39 th to 42 th stator slots of the 3 rd slot layer in a Y-span.
The leads corresponding to the straight line segments of the 1 st to 6 th stator slots, the 11 th to 22 th stator slots, the 27 th to 38 th stator slots and the 43 rd to 48 th stator slots of the 3 rd slot layer are connected with the leads corresponding to the straight line segments of the 1 st stator slots, the 6 th to 17 th stator slots, the 22 nd to 33 th stator slots and the 38 th to 48 th stator slots of the 4 th slot layer by the span of Y-1.
The leads corresponding to the straight line segments of the 2 th to 5 th stator slots, the 18 th to 21 th stator slots and the 34 th to 37 th stator slots of the 4 th slot layer are connected with the leads corresponding to the 7 th to 10 th stator slots, the 23 rd to 26 th stator slots and the 39 th to 42 th stator slots of the 5 th slot layer in a Y-1 span.
The leads corresponding to the straight line segments of the 1 st to 6 th stator slots, the 11 th to 22 th stator slots, the 27 th to 38 th stator slots and the 43 th to 48 th stator slots of the 5 th slot layer are connected with the leads corresponding to the straight line segments of the 1 st stator slots, the 6 th to 17 th stator slots, the 22 nd to 33 th stator slots and the 38 th to 48 th stator slots of the 6 th slot layer by the span of Y-1.
The leads corresponding to the straight line segments of the 2 th to 5 th stator slots, the 18 th to 21 th stator slots and the 34 th to 37 th stator slots of the 6 th slot layer are connected with the leads corresponding to the straight line segments of the 8 th to 11 th stator slots, the 24 th to 27 th stator slots and the 40 th to 43 th stator slots of the 7 th slot layer in a Y-span mode.
The leads corresponding to the straight line segments of the 1 st to 7 th stator slots, the 12 th to 23 th stator slots, the 28 th to 39 th stator slots and the 44 th to 48 th stator slots of the 7 th slot layer are connected with the leads corresponding to the straight line segments of the 1 st stator slots, the 6 th to 17 th stator slots, the 22 nd to 33 th stator slots and the 38 th to 48 th stator slots of the 8 th slot layer by Y-span.
Leads corresponding to straight line segments of the 8 th slot layer 2 nd to 5 th stator slots, the 18 th to 21 th stator slots and the 34 th to 37 th stator slots are formed into outgoing lines or incoming lines of 12 branches formed by the stator windings.
According to the flat wire winding provided by the embodiment of the application, the flat wire winding formed in the winding mode is simple in structure, few in required flat wire types and capable of being deformed in various ways to meet different requirements, and the manufacturing cost is reduced.
According to some embodiments of the invention, the stator winding includes four flat wires, a first flat wire, a second flat wire, a third flat wire, and a fourth flat wire, respectively.
The first flat wire and the second flat wire are alternately arranged on the first groove layer, the second groove layer, the 2K groove layer and the 2K-1 groove layer, the span of the crown end of the first flat wire is Y+1 and comprises two pins with the spans of (Y-1)/2 and (Y+1)/2, and the span of the crown end of the second flat wire is Y-1 and comprises two pins with the spans of (Y-1)/2 and (Y+1)/2.
The third flat wire and the fourth flat wire are alternately arranged on other middle groove layers except the first groove layer, the second groove layer, the 2K groove layer and the 2K-1 groove layer, the span of the crown end of the third flat wire is Y and comprises two pins with the span of (Y-1)/2, the span of the crown end of the fourth flat wire is Y+2 and comprises two pins with the span of (Y-1)/2.
Therefore, the flat wire winding formed by the winding mode has a simple structure, few types of required flat wires and reduced manufacturing cost.
Further, in the inserting process of the flat wire, the pins of all the flat wires in the same stator slot are simultaneously bent and formed, so that in order to ensure that the pins of two adjacent flat wires on the same branch have enough spans for connection, straight line segments corresponding to the pins with the span of (Y-1)/2 in the first flat wire and the second flat wire are inserted in the 1 st slot layer and the 2K slot layer, and straight line segments corresponding to the pins with the span of (Y+1)/2 are inserted in the 2 nd slot layer and the 2K-1 st slot layer, so that the winding mode is realized.
In some embodiments, the stator winding comprises D-phase windings, each phase winding comprising at least E legs, e=4g, g being a positive integer, i.e. each phase winding may comprise 4 legs, or each phase winding may comprise 8 legs, 12 legs, etc. Each branch comprises a plurality of flat wires which are sequentially connected in series.
The number of stator slots formed in the stator core is F, f=h×e×d, h is a positive integer, that is, when the stator winding includes 3-phase windings and each phase winding includes 4 branches, the number of stator slots formed in the stator core may be 12, 24, 36, 48, etc.
Furthermore, any one of the E branches included in each phase winding is wound from the first slot layer to the 2K slot layer, and the branches are arranged in parallel, in some embodiments, the E branches included in each phase winding may be connected in series or parallel, or the branches are connected in parallel after being connected in series, so that the E branches can be deformed in multiple different ways to meet different requirements, and the manufacturing cost is reduced.
According to some embodiments of the present invention, referring to fig. 1, the stator core is provided with 48 slots of stator slots, the number of poles of the motor is 8, the stator winding comprises three phases including U-phase, V-phase and W-phase, each phase winding has the same winding mode, each stator slot is provided with 8 slot layers m, n, o, p, q, r, s, t, each phase winding comprises four branches,
the winding route of the U-phase first branch of the stator winding is as follows:
1m-8n-14m-19n-25m-32n-38m-43n-1o-9p-14o-20p-25o-33p-38o-44p-1q-9r-14q-20r-25q-33r-38q-44r-2s-9t-15s-20t-26s-33t-39s-44t；
the pins of the flat wire corresponding to the mth slot layer of the 1 st stator slot and the mth slot layer of the 44 th stator slot can respectively form the leading-in end and the leading-out end of the first branch.
When the pin corresponding to the linear section of the mth slot layer of the 1 st stator slot is formed as the leading-in end of the first branch, and the pin corresponding to the linear section of the mth slot layer of the 44 th stator slot is formed as the leading-out end of the first branch, the winding route of the U-phase first branch of the stator winding can be as follows:
1m→8n→14m→19n→25m→32n→38m→43n→1o→9p→14o→20p→25o→33p→38o→44p→1q→9r→14q→20r→25q→33r→38q→44r→2s→9t→15s→20t→26s→33t→39s→44t；
when the pin corresponding to the linear section of the mth slot layer of the 1 st stator slot is formed as the leading-out end of the first branch, and the pin corresponding to the linear section of the mth slot layer of the 44 th stator slot is formed as the leading-in end of the first branch, the winding route of the U-phase first branch of the stator winding can be as follows:
1m←8n←14m←19n←25m←32n←38m←43n←1o←9p←14o←20p←25o←33p←38o←44p←1q←9r←14q←20r←25q←33r←38q←44r←2s←9t←15s←20t←26s←33t←39s←44t。
the winding route of the U-phase second branch of the stator winding is as follows:
2m-7n-13m-20n-26m-31n-37m-44n-2o-8p-13o-21p-26o-32p-37o-45p-2q-8r-13q-21r-26q-32r-37q-45r-3s-8t-14s-21t-27s-32t-38s-45t；
The pins of the flat wire corresponding to the mth slot layer of the 2 nd stator slot and the mth slot layer of the 45 th stator slot can respectively form the leading-in end and the leading-out end of the second branch.
When the pin corresponding to the straight line segment of the mth slot layer of the 2 th stator slot forms the leading-in end of the second branch, and the pin corresponding to the straight line segment of the mth slot layer of the 45 th stator slot forms the leading-out end of the second branch, the winding route of the U-phase second branch of the stator winding can be as follows:
2m→7n→13m→20n→26m→31n→37m→44n→2o→8p→13o→21p→26o→32p→37o→45p→2q→8r→13q→21r→26q→32r→37q→45r→3s→8t→14s→21t→27s→32t→38s→45t；
when the pin corresponding to the straight line segment of the mth slot layer of the 2 th stator slot forms the leading-out end of the second branch, and the pin corresponding to the straight line segment of the mth slot layer of the 45 th stator slot forms the leading-in end of the second branch, the winding route of the U-phase second branch of the stator winding can be as follows:
2m←7n←13m←20n←26m←31n←37m←44n←2o←8p←13o←21p←26o←32p←37o←45p←2q←8r←13q←21r←26q←32r←37q←45r←3s←8t←14s←21t←27s←32t←38s←45t。
the winding route of the U-phase third branch of the stator winding is as follows:
2t-45s-39t-32s-26t-21s-15t-8s-2r-44q-39r-31q-26r-20q-15r-7q-2p-44o-39p-31o-26p-20o-15p-7o-1n-44m-38n-31m-25n-20m-14n-7m；
the pins of the flat wire corresponding to the t slot layer of the 2 nd stator slot and the m slot layer of the 7 th stator slot can respectively form an inlet end and an outlet end of the third branch;
when the pin corresponding to the straight line segment arranged on the t slot layer of the 2 th stator slot forms the leading-in end of the third branch, and the pin corresponding to the straight line segment arranged on the m slot layer of the 7 th stator slot forms the leading-out end of the third branch, the winding route of the U-phase third branch of the stator winding can be as follows:
2t→45s→39t→32s→26t→21s→15t→8s→2r→44q→39r→31q→26r→20q→15r→7q→2p→44o→39p→31o→26p→20o→15p→7o→1n→44m→38n→31m→25n→20m→14n→7m；
When the pin corresponding to the straight line segment arranged on the t slot layer of the 2 th stator slot forms the leading-out end of the third branch, and the pin corresponding to the straight line segment arranged on the m slot layer of the 7 th stator slot forms the leading-in end of the third branch, the winding route of the U-phase third branch of the stator winding can be as follows:
2t←45s←39t←32s←26t←21s←15t←8s←2r←44q←39r←31q←26r←20q←15r←7q←2p←44o←39p←31o←26p←20o←15p←7o←1n←44m←38n←31m←25n←20m←14n←7m。
the winding route of the U-phase fourth branch of the stator winding is as follows:
3t-44s-38t-33s-27t-20s-14t-9s-3r-43q-38r-32q-27r-19q-14r-8q-3p-43o-38p-32o-27p-19o-14p-8o-2n-43m-37n-32m-26n-19m-13n-8m；
the pins of the flat wire corresponding to the 3 rd stator slot and the 8 th stator slot and the m th slot can respectively form the lead-in end and the lead-out end of the fourth branch.
When the pin corresponding to the straight line segment arranged on the 3 th slot layer of the stator slot forms the leading-in end of the fourth branch, and the pin corresponding to the straight line segment arranged on the 8 th slot layer of the stator slot forms the leading-out end of the fourth branch, the winding route of the U-phase fourth branch of the stator winding can be as follows:
3t→44s→38t→33s→27t→20s→14t→9s→3r→43q→38r→32q→27r→19q→14r→8q→3p→43o→38p→32o→27p→19o→14p→8o→2n→43m→37n→32m→26n→19m→13n→8m；
when the pin corresponding to the straight line segment arranged on the 3 rd stator slot and the t slot layer forms the leading-out end of the fourth branch, and the pin corresponding to the straight line segment arranged on the 8 th stator slot and the m slot layer forms the leading-in end of the fourth branch, the winding route of the U-phase fourth branch of the stator winding can be as follows:
3t←44s←38t←33s←27t←20s←14t←9s←3r←43q←38r←32q←27r←19q←14r←8q←3p←43o←38p←32o←27p←19o←14p←8o←2n←43m←37n←32m←26n←19m←13n←8m。
further, the four branches can be connected in series or in parallel, or the plurality of branches are connected in parallel after being connected in series, so that the four branches can be deformed in various ways to meet different requirements, and the manufacturing cost is reduced.
For example, pins corresponding to the straight line segment of the t slot layer of the 3 rd stator slot are connected with pins corresponding to the straight line segment of the t slot layer of the 44 th stator slot, pins corresponding to the straight line segment of the t slot layer of the 2 nd stator slot are connected with pins corresponding to the straight line segment of the t slot layer of the 45 th stator slot, at this time, four branches are connected in series to form two branches connected in parallel with each other,
the winding route of the first branch is as follows:
1m→8n→14m→19n→25m→32n→38m→43n→1o→9p→14o→20p→25o→33p→38o→44p→1q→9r→14q→20r→25q→33r→38q→44r→2s→9t→15s→20t→26s→33t→39s→44t→3t→44s→38t→33s→27t→20s→14t→9s→3r→43q→38r→32q→27r→19q→14r→8q→3p→43o→38p→32o→27p→19o→14p→8o→2n→43m→37n→32m→26n→19m→13n→8m；
the winding route of the second branch is as follows:
2m→7n→13m→20n→26m→31n→37m→44n→2o→8p→13o→21p→26o→32p→37o→45p→2q→8r→13q→21r→26q→32r→37q→45r→3s→8t→14s→21t→27s→32t→38s→45t→2t→45s→39t→32s→26t→21s→15t→8s→2r→44q→39r→31q→26r→20q→15r→7q→2p→44o→39p→31o→26p→20o→15p→7o→1n→44m→38n→31m→25n→20m→14n→7m。
in some embodiments, the two branches are connected in series on the basis that the pin corresponding to the straight line segment of the mth slot layer of the 8 th stator slot is connected with the pin corresponding to the straight line segment of the mth slot layer of the 2 nd stator slot, so that the two branches are formed into one branch.
According to other embodiments of the present invention, as shown in fig. 2, the stator core has 48 slots of stator slots, 8 poles of the motor, the stator winding comprises three phases including U-phase, V-phase and W-phase, each phase winding has the same winding mode, each stator slot has 6 slot layers m, n, o, p, q, r, each phase winding comprises four branches,
the winding route of the U-phase first branch of the stator winding is as follows:
1m-8n-14m-19n-25m-32n-38m-43n-1o-9p-14o-20p-25o-33p-38o-44p-2q-9r-15q-20r-26q-33r-39q-44r；
the pins of the flat wire corresponding to the mth slot layer of the 1 st stator slot and the mth slot layer of the 44 th stator slot can respectively form a lead-in end and a lead-out end of the first branch;
The winding route of the U-phase second branch of the stator winding is as follows:
2m-7n-13m-20n-26m-31n-37m-44n-2o-8p-13o-21p-26o-32p-37o-45p-3q-8r-14q-21r-27q-32r-38q-45r，
the pins of the flat wire corresponding to the mth slot layer of the 2 nd stator slot and the mth slot layer of the 45 th stator slot can respectively form a lead-in end and a lead-out end of the second branch;
the winding route of the U-phase third branch of the stator winding is as follows:
2r-45q-39r-32q-26r-21q-15r-8q-2p-44o-39p-31o-26p-20o-15p-7o-1n-44m-38n-31m-25n-20m-14n-7m，
the pins of the flat wire corresponding to the (2 nd) stator slot (r) slot layer and the (7) stator slot (m) slot layer can respectively form a lead-in end and a lead-out end of the third branch;
the winding route of the U-phase fourth branch of the stator winding is as follows:
3r-44q-38r-33q-27r-20q-14r-9q-3p-43o-38p-32o-27p-19o-14p-8o-2n-43m-37n-32m-26n-19m-13n-8m，
the pins of the flat wire corresponding to the 3 rd stator slot and the 8 th stator slot and the m th slot can respectively form the lead-in end and the lead-out end of the fourth branch.
Further, the four branches can be connected in series or in parallel, or the plurality of branches are connected in parallel after being connected in series, so that the four branches can be deformed in various ways to meet different requirements, and the manufacturing cost is reduced.
According to still other embodiments of the present invention, as shown in fig. 3, the stator core is provided with 48 slots of stator slots, the number of poles of the motor is 8, the stator winding comprises three phases including U-phase, V-phase and W-phase, each phase winding has the same winding mode, each stator slot is provided with 6 slot layers m, n, o, p, q, r, each phase winding comprises four branches,
The winding route of the U-phase first branch of the stator winding is as follows:
1m-8n-14m-19n-25m-32n-38m-43n-1o-9p-14o-20p-25o-33p-38o-44p-2q-9r-15q-20r-26q-33r-39q-44r，
the pins of the flat wire corresponding to the mth slot layer of the 1 st stator slot and the mth slot layer of the 44 th stator slot can respectively form a lead-in end and a lead-out end of the first branch;
the winding route of the U-phase second branch of the stator winding is as follows:
13m-20n-26m-31n-37m-44n-2m-7n-13o-21p-26o-32p-37o-45p-2o-8p-14q-21r-27q-32r-38q-45r-3q-8r，
the pins of the flat wire corresponding to the mth slot layer of the 13 th stator slot and the mth slot layer of the 8 th stator slot can respectively form a lead-in end and a lead-out end of the second branch;
the winding route of the U-phase third branch of the stator winding is as follows:
2r-45q-39r-32q-26r-21q-15r-8q-2p-44o-39p-31o-26p-20o-15p-7o-1n-44m-38n-31m-25n-20m-14n-7m，
the pins of the flat wire corresponding to the (2 nd) stator slot (r) slot layer and the (7) stator slot (m) slot layer can respectively form a lead-in end and a lead-out end of the third branch;
the winding route of the U-phase fourth branch of the stator winding is as follows:
14r-9q-3r-44q-38r-33q-27r-20q-14p-8o-3p-43o-38p-32o-27p-19o-13n-8m-2n-43m-37n-32m-26n-19m，
the pins of the flat wire corresponding to the 14 th stator slot and the 19 th stator slot and the m th slot can respectively form the lead-in end and the lead-out end of the fourth branch.
Further, the four branches can be connected in series or in parallel, or the plurality of branches are connected in parallel after being connected in series, so that the four branches can be deformed in various ways to meet different requirements, and the manufacturing cost is reduced.
Referring to fig. 4, the stator winding includes a plurality of flat wires 10, the flat wires 10 include crown sides, the crown sides are disposed at one side of the stator core, and the pins 3 of two adjacent flat wires are connected to form a welding side of the stator winding, and the welding side is disposed at the other side of the stator core, so that welding is performed at one side in the production process, and the pins 3 of each flat wire 10 are connected, so that the overall arrangement is more orderly, and connection errors are avoided.
As shown in fig. 4, the plurality of flat wires 10 respectively include: two straightway 1, linkage segment 2 and two pins 3, two straightway 1 insert respectively and locate in the stator groove of difference, and linkage segment 2 connects the one end of two straightway 1, and above-mentioned crown side is the one side that linkage segment 2 was located on the flat wire, and the other end of straightway 1 is located to pin 3, and two pins 3 of same flat wire 10 are outwards bent respectively, and the pin 3 of two adjacent flat wires 10 on the same branch is connected, forms stator winding's welding side.
The motor comprises a stator core and the flat wire winding, wherein a plurality of stator slots are formed in the circumferential direction of the stator core, and the flat wire winding is wound on the stator slots. The branches of each phase of the flat wire winding are uniformly distributed in the stator core, the arrangement difficulty of winding wires is low, the electric potential in each branch of each phase is equal, the generation of circulation is effectively prevented, and the running reliability and stability of the motor are higher.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the description of the invention, a "first feature" or "second feature" may include one or more of such features.
In the description of the present invention, "plurality" means two or more.
In the description of the invention, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.
In the description of the invention, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. The flat wire winding is characterized by comprising a stator winding wound on each stator slot layer of a stator core, wherein the stator winding is formed with 2K slot layers;
the stator winding comprises a plurality of flat wires, and the flat wires respectively comprise: the connecting section is connected with one ends of the two straight line sections, the pins are arranged at the other ends of the straight line sections, and the two pins of the same flat wire are respectively bent outwards;
the flat wire comprises a crown side, the crown side is arranged on one side of the stator core, pins of two adjacent flat wires are connected to form a welding side of the stator winding, and the welding side is arranged on the other side of the stator core;
the two pins of the flat wire extend outwards respectively, the straight line section of the flat wire is inserted into the 2i and 2i-1 groove layers respectively, the straight line section inserted into the 2i groove layer is positioned at one side of the straight line section inserted into the 2i-1 groove layer in the first direction, wherein the spans of the crown sides of two adjacent flat wires positioned on the 1 st and 2 nd groove layers, the 2K and 2K-1 st groove layers are Y+1 and Y-1 respectively, and the spans of the crown sides of two adjacent flat wires positioned on the 2a and 2a-1 st groove layers are Y and Y+2 respectively, and 1 < a < K;
At least part of pins corresponding to the straight line segments arranged on the 2i slot layer are connected with the pins corresponding to the straight line segments of the 2i+1 slot layer, so that the cross-layer connection of the stator winding is realized, the rest part of pins corresponding to the straight line segments arranged on the 2i-1 slot layer are connected with the pins corresponding to the straight line segments, the welding sides of the stator winding are formed after the pins of the two flat wires are connected,
the welding side spans of the 2 nd groove layer and the 3 rd groove layer, the 2K-2 nd groove layer and the 2K-1 st groove layer are Y, and the welding side spans of the 2c groove layer and the 2c+1 st groove layer are Y-1, wherein c is more than 1 and less than K-1;
the welding side span of the 1 st groove layer corresponding to the 2 nd groove layer, the 2K groove layer and the 2K-1 groove layer is Y, the welding side span of the 2b groove layer corresponding to the 2b-1 groove layer is Y-1, b is more than 1 and less than K,
the ratio of the number of stator slots formed in the stator core to the number of motor poles is Y, K, i, a, b, c is a positive integer, and K is more than 2.
2. The flat wire winding of claim 1, wherein the stator winding comprises:
the crown end span of the first flat wire is Y+1, and the first flat wire comprises two pins with the spans of (Y-1)/2 and (Y+1)/2 respectively;
the span of the crown end of the second flat wire is Y-1, and the second flat wire comprises two pins with the spans of (Y-1)/2 and (Y+1)/2 respectively;
The crown end span of the third flat wire is Y, and the third flat wire comprises two pins with the span of (Y-1)/2;
a fourth flat wire, the span of the crown end of the fourth flat wire is Y+2, and the fourth flat wire comprises two pins with the span of (Y-1)/2,
the straight line segments corresponding to the pins with the span of (Y-1)/2 in the first flat wire and the second flat wire are inserted in the 1 st slot layer and the 2 nd K slot layer, and the straight line segments corresponding to the pins with the span of (Y+1)/2 are inserted in the 2 nd slot layer and the 2K-1 st slot layer.
3. The flat wire winding according to claim 1, wherein the stator winding comprises a D-phase winding, each phase winding comprises at least E branches, each branch comprises a plurality of flat wires connected in series in turn, the stator core is provided with stator slots having a slot number of F, e=4g, and f=hxexd, h and g are positive integers.
4. A flat wire winding according to claim 3, wherein each phase of winding comprises E branches which may be connected in series or parallel or a plurality of branches which may be connected in series and then in parallel.
5. The flat wire winding according to claim 1, wherein the stator core has 48 slots and 8 poles, the stator winding comprises three phases including U-phase, V-phase and W-phase, each phase winding has the same winding mode, each stator slot has 6 slot layers m, n, o, p, q, r, each phase winding comprises four branches,
The winding route of the U-phase first branch of the stator winding is as follows:
1m-8n-14m-19n-25m-32n-38m-43n-1o-9p-14o-20p-25o-33p-38o-44p-2q-9r-15q-20r-26q-33r-39q-44r，
pins of flat wires corresponding to the mth slot layer of the 1 st stator slot and the mth slot layer of the 44 th stator slot can respectively form a lead-in end and a lead-out end of the first branch;
the winding route of the U-phase second branch of the stator winding is as follows:
2m-7n-13m-20n-26m-31n-37m-44n-2o-8p-13o-21p-26o-32p-37o-45p-3q-8r-14q-21r-27q-32r-38q-45r，
pins of the flat wire corresponding to the mth slot layer of the 2 nd stator slot and the mth slot layer of the 45 th stator slot can respectively form a lead-in end and a lead-out end of the second branch;
the winding route of the U-phase third branch of the stator winding is as follows:
2r-45q-39r-32q-26r-21q-15r-8q-2p-44o-39p-31o-26p-20o-15p-7o-1n-44m-38n-31m-25n-20m-14n-7m，
pins of the flat wire corresponding to the (2 nd) stator slot (r) slot layer and the (7) stator slot (m) slot layer can respectively form a lead-in end and a lead-out end of the third branch;
the winding route of the U-phase fourth branch of the stator winding is as follows:
3r-44q-38r-33q-27r-20q-14r-9q-3p-43o-38p-32o-27p-19o-14p-8o-2n-43m-37n-32m-26n-19m-13n-8m，
the pins of the flat wire corresponding to the 3 rd stator slot and the 8 th stator slot and the m th slot can respectively form the leading-in end and the leading-out end of the fourth branch.
6. The flat wire winding according to claim 1, wherein the stator core has 48 slots and 8 poles, the stator winding comprises three phases including U-phase, V-phase and W-phase, each phase winding has the same winding mode, each stator slot has 6 slot layers m, n, o, p, q, r, each phase winding comprises four branches,
The winding route of the U-phase first branch of the stator winding is as follows:
1m-8n-14m-19n-25m-32n-38m-43n-1o-9p-14o-20p-25o-33p-38o-44p-2q-9r-15q-20r-26q-33r-39q-44r，
pins of flat wires corresponding to the mth slot layer of the 1 st stator slot and the mth slot layer of the 44 th stator slot can respectively form a lead-in end and a lead-out end of the first branch;
the winding route of the U-phase second branch of the stator winding is as follows:
13m-20n-26m-31n-37m-44n-2m-7n-13o-21p-26o-32p-37o-45p-2o-8p-14q-21r-27q-32r-38q-45r-3q-8r，
the pins of the flat wire corresponding to the mth slot layer of the 13 th stator slot and the mth slot layer of the 8 th stator slot can respectively form the leading-in end and the leading-out end of the second branch;
the winding route of the U-phase third branch of the stator winding is as follows:
2r-45q-39r-32q-26r-21q-15r-8q-2p-44o-39p-31o-26p-20o-15p-7o-1n-44m-38n-31m-25n-20m-14n-7m，
pins of the flat wire corresponding to the (2 nd) stator slot (r) slot layer and the (7) stator slot (m) slot layer can respectively form a lead-in end and a lead-out end of the third branch;
the winding route of the U-phase fourth branch of the stator winding is as follows:
14r-9q-3r-44q-38r-33q-27r-20q-14p-8o-3p-43o-38p-32o-27p-19o-13n-8m-2n-43m-37n-32m-26n-19m，
the pins of the flat wire corresponding to the 14 th stator slot and the 19 th stator slot and the m th slot can respectively form the leading-in end and the leading-out end of the fourth branch.
7. The flat wire winding according to claim 1, wherein the stator core has 48 slots and 8 poles, the stator winding comprises three phases including U-phase, V-phase and W-phase, each phase winding has the same winding mode, each stator slot has 8 slot layers m, n, o, p, q, r, s, t, each phase winding comprises four branches,
The winding route of the U-phase first branch of the stator winding is as follows:
1m-8n-14m-19n-25m-32n-38m-43n-1o-9p-14o-20p-25o-33p-38o-44p-1q-9r-14q-20r-25q-33r-38q-44r-2s-9t-15s-20t-26s-33t-39s-44t，
pins of flat wires corresponding to the mth slot layer of the 1 st stator slot and the mth slot layer of the 44 th stator slot can respectively form a lead-in end and a lead-out end of the first branch;
the winding route of the U-phase second branch of the stator winding is as follows:
2m-7n-13m-20n-26m-31n-37m-44n-2o-8p-13o-21p-26o-32p-37o-45p-2q-8r-13q-21r-26q-32r-37q-45r-3s-8t-14s-21t-27s-32t-38s-45t，
pins of the flat wire corresponding to the mth slot layer of the 2 nd stator slot and the mth slot layer of the 45 th stator slot can respectively form a lead-in end and a lead-out end of the second branch;
the winding route of the U-phase third branch of the stator winding is as follows:
2t-45s-39t-32s-26t-21s-15t-8s-2r-44q-39r-31q-26r-20q-15r-7q-2p-44o-39p-31o-26p-20o-15p-7o-1n-44m-38n-31m-25n-20m-14n-7m，
the pins of the flat wire corresponding to the t slot layer of the 2 nd stator slot and the m slot layer of the 7 th stator slot can respectively form the lead-in end and the lead-out end of the third branch;
the winding route of the U-phase fourth branch of the stator winding is as follows:
3t-44s-38t-33s-27t-20s-14t-9s-3r-43q-38r-32q-27r-19q-14r-8q-3p-43o-38p-32o-27p-19o-14p-8o-2n-43m-37n-32m-26n-19m-13n-8m，
the pins of the flat wire corresponding to the 3 rd stator slot and the 8 th stator slot and the m th slot can respectively form the lead-in end and the lead-out end of the fourth branch.
8. An electric motor comprising a stator core and the flat wire winding according to any one of claims 1 to 7, wherein a plurality of stator slots are provided in the circumferential direction of the stator core, and the flat wire winding is wound around the stator slots.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114520560A (en) * | 2022-03-18 | 2022-05-20 | 厦门势拓御能科技有限公司 | Flat wire winding structure, stator assembly and flat wire motor |
| CN114709945A (en) * | 2022-03-18 | 2022-07-05 | 厦门势拓御能科技有限公司 | Flat wire stator winding, stator module and flat wire motor |
| CN115765253A (en) * | 2022-07-07 | 2023-03-07 | 浙江凌昇动力科技有限公司 | Stator, flat wire motor, power assembly and vehicle |
| CN219458775U (en) * | 2022-11-30 | 2023-08-01 | 耐世特汽车系统（苏州）有限公司 | Short-distance flat wire stator and motor |
| CN116599298A (en) * | 2023-05-29 | 2023-08-15 | 重庆青山工业有限责任公司 | Flat wire motor winding connection method |
| CN219611465U (en) * | 2023-06-15 | 2023-08-29 | 天蔚蓝电驱动科技(江苏)有限公司 | Stator of flat wire motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114520560A (en) * | 2022-03-18 | 2022-05-20 | 厦门势拓御能科技有限公司 | Flat wire winding structure, stator assembly and flat wire motor |
| CN114709945A (en) * | 2022-03-18 | 2022-07-05 | 厦门势拓御能科技有限公司 | Flat wire stator winding, stator module and flat wire motor |
| CN115765253A (en) * | 2022-07-07 | 2023-03-07 | 浙江凌昇动力科技有限公司 | Stator, flat wire motor, power assembly and vehicle |
| CN219458775U (en) * | 2022-11-30 | 2023-08-01 | 耐世特汽车系统（苏州）有限公司 | Short-distance flat wire stator and motor |
| CN116599298A (en) * | 2023-05-29 | 2023-08-15 | 重庆青山工业有限责任公司 | Flat wire motor winding connection method |
| CN219611465U (en) * | 2023-06-15 | 2023-08-29 | 天蔚蓝电驱动科技(江苏)有限公司 | Stator of flat wire motor |
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