CN115001184A - Odd-layer flat wire winding - Google Patents
Odd-layer flat wire winding Download PDFInfo
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- CN115001184A CN115001184A CN202210588106.2A CN202210588106A CN115001184A CN 115001184 A CN115001184 A CN 115001184A CN 202210588106 A CN202210588106 A CN 202210588106A CN 115001184 A CN115001184 A CN 115001184A
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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
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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
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- 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
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- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The invention discloses an odd-layer flat wire winding, which adopts a three-phase parallel two-branch flat wire to match with a hairpin to penetrate and wind 6 multiplied by M slot positions N layers, wherein N is an odd number more than or equal to 3, and M is an even number more than or equal to 6; in the U-phase winding, for the first branch, the point positions are marked according to the sequence of current flowing through the slots, and the point positions are staggered one by one according to the sequence
A slot position and
with slots alternately staggered or staggered one by one
A slot position and
one slot positionP is a pole pair number, for the second branch, starting from the 1 st point, every N points are in one group, each group of points and the corresponding points on the first branch are staggered by 1 slot position in the same direction, and the staggered directions of the adjacent groups of points are opposite; and the V-phase winding and the W-phase winding are obtained by respectively rotating M and M/2 slot positions along the increasing direction of the slot numbers relative to the U-phase winding. The invention realizes the direct welding of odd layers without additionally adding an expansion layer for welding, and can not cause the insulation hidden trouble caused by the reduction of an electric gap.
Description
Technical Field
The invention belongs to the field of motors, and particularly relates to an odd-layer flat wire winding.
Background
The flat wire motor can obviously improve the slot filling factor and the motor efficiency of the motor, in a new energy automobile driving system, the flat wire motor used at present is almost all even-layer conductors (such as 2, 4, 6, 8 layers and the like), and odd-layer conductors rarely appear, because the flat wire connection of odd-layer flat wire windings is difficult to realize, the selection of the number of turns in the design of the flat wire motor is very limited, and the number of turns of the flat wire motor is not any positive integer like the number of turns of a round wire motor.
At present, chinese patent CN111478477A discloses a motor stator and a motor, and a winding method of odd-numbered layers of flat wire windings is shown in fig. 1 and fig. 2, although 5 layers of flat wires are used, an extra layer is actually needed to be added and expanded to the 6 th layer for welding, which additionally increases the outer diameter of the winding, and leads to a reduction in the electrical gap between the outer diameter of the winding and the inner diameter of the housing, and brings about a potential safety hazard of electrical insulation.
Disclosure of Invention
The invention aims to provide an odd-layer flat wire winding, which breaks through the constraint that the existing flat wire motor can only be an even layer, so that the selection of the number of layers is not limited when the flat wire motor is designed, the odd layer is directly welded, an additional expanded layer is not required to be added for welding, and the potential insulation hazard caused by the reduction of an electric gap is avoided.
The technical scheme adopted by the invention is as follows:
a flat wire winding of odd layers is characterized in that a flat wire of three-phase parallel two branches is matched with a hairpin to be wound in N layers of 6 multiplied by M slot positions, N is an odd number larger than or equal to 3, and M is an even number larger than or equal to 6; in the U-phase winding, point positions are marked according to the sequence of current flowing through the slots for a first branch, the 1 st point on the 1 st layer is taken as a starting point, the first branch is staggered and detoured to the Nth layer by layer along the circumferential direction, then the Nth layer is staggered and detoured for more times, then the second branch is staggered and reversely detoured to the 1 st layer by layer along the circumferential direction, then the second branch is staggered and detoured for more times, and then the process is circulated until the NxM point on the 1 st layer is reached, and the point positions are staggered and staggered one by one according to the sequence
A slot position and
with individual slots or staggered alternately one by one
A slot position and
the two paint stripping ends of the hairpins are twisted in opposite directions and then are respectively connected with the 2 point pairs, the two paint stripping ends of the hairpins are twisted in the same direction and then are respectively connected with the 2 point pairs, the hairpins are sequenced according to a connection sequence, the two hairpins are welded together by the twisted paint stripping ends for the hairpins in adjacent sequence and on the same layer, and the two hairpins are welded together by the twisted paint stripping ends for the hairpins in adjacent sequence and on the same layer through copper wires or an integral busbar; in the U-phase winding, for a second branch, starting from a point 1, every N points are in one group, each group of point locations and corresponding point locations on a first branch are staggered by 1 slot location in the same direction, the staggered direction of adjacent groups of point locations is opposite, and the connection mode of the second branch and a hairpin in the first branch is the same; the V-phase winding is obtained by rotating M slot positions along the increasing direction of the slot number relative to the U-phase winding, and the W-phase winding is obtained by rotating M/2 slot positions along the increasing direction of the slot number relative to the U-phase winding.
Preferably, when a three-phase parallel two-branch flat wire is adopted to match with a hairpin to penetrate and wind 48 slot positions and 5 layers, the pole pair number is 4, xy is defined as the y layer of the x slot position, wherein x epsilon [1, 48], y epsilon [ a, e ], the winding connecting routes of U + to U-in the first branch of the U-phase winding are 1a, 8b, 13c, 20d, 25e, 32e, 27d, 20c, 15b, 8a, 13a, 20b, 25c, 32d, 37e, 44e, 39d, 32c, 27b, 20a, 25a, 32b, 37c, 44d, 1e, 8e, 3d, 44c, 39b, 32a, 37a, 44b, 1c, 8d, 13e, 20e, 15d, 8c, 3b, 44a, and 2a, 9b, 14c, 14e, 21d, 26e, 26c, 14c, 26d, 26e and 2a in turn, 31e, 26d, 19c, 14b, 7a, 14a, 21b, 26c, 33d, 38e, 43e, 38d, 31c, 26b, 19a, 26a, 33b, 38c, 45d, 2e, 7e, 2d, 43c, 38b, 31a, 38a, 45b, 2c, 9d, 14e, 19e, 14d, 7c, 2b, 43 a.
Preferably, when a three-phase parallel two-branch flat wire is adopted to match with a hairpin to penetrate and wind 48 slot positions and 5 layers, the pole pair number is 4, xy is defined as the y layer of the x slot position, wherein x epsilon [1, 48], y epsilon [ a, e ], the winding connecting routes of U + to U-in the first branch of the U-phase winding are 3a, 8b, 15c, 20d, 27e, 32e, 25d, 20c, 13b, 8a, 15a, 20b, 27c, 32d, 39e, 44e, 37d, 32c, 25b, 20a, 27a, 32b, 39c, 44d, 3e, 8e, 1d, 44c, 37b, 32a, 39a, 44b, 3c, 8d, 15e, 20e, 13d, 8c, 1b, 44a, and 2a, 7b, 7c, 14e, 14c, 26e and 14a in sequence, and the winding connecting routes of U + to U-in the second branch of the U-phase winding are 2a, 7b, 7, 14c, 14e and 14e in sequence, 33e, 26d, 21c, 14b, 9a, 14a, 19b, 26c, 31d, 38e, 45e, 38d, 33c, 26b, 21a, 26a, 31b, 38c, 43d, 2e, 9e, 2d, 45c, 38b, 33a, 38a, 43b, 2c, 7d, 14e, 21e, 14d, 9c, 2b, 45 a.
The invention has the beneficial effects that:
the invention breaks through the constraint that the existing flat wire motor can only be an even number of layers, so that the selection of the number of layers is not limited when the flat wire motor is designed; the invention realizes the direct welding of odd layers without additionally adding an expansion layer for welding, and can not cause the insulation hidden trouble caused by the reduction of an electric gap.
Drawings
Fig. 1 is a U-phase first branch winding wiring diagram of a conventional odd-numbered layer flat wire winding.
Fig. 2 is a wiring diagram of a U-phase second branch winding of a conventional odd-level flat wire winding.
Fig. 3 is a connection diagram of the U-phase first branch winding when a three-phase parallel two-branch flat wire is used to match with a hairpin to penetrate and wind 48 slot positions by 5 layers in the first embodiment of the invention.
Fig. 4 is a connection diagram of a U-phase second branch winding when a three-phase parallel two-branch flat wire is used to match with a hairpin to cross-wind 48 slots at 5 layers in the first embodiment of the invention.
Fig. 5 is a connection diagram of the U-phase first branch winding when a flat wire of two branches connected in parallel in three phases is used to match with a hairpin to penetrate and wind 48 slot positions by 5 layers in the second embodiment of the present invention.
Fig. 6 is a connection diagram of a U-phase second branch winding when a three-phase parallel two-branch flat wire is used to cooperate with a hairpin to cross-wind 48 slots at 5 layers in the second embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
A flat wire winding of odd layers is characterized in that a flat wire of three-phase parallel two branches is matched with a hairpin to be wound in N layers of 6 multiplied by M slot positions, N is an odd number larger than or equal to 3, and M is an even number larger than or equal to 6; in the U-phase winding, point positions are marked according to the sequence of current flowing through the slots for a first branch, the 1 st point on the 1 st layer is taken as a starting point, the first branch is staggered and detoured to the Nth layer by layer along the circumferential direction, then the Nth layer is staggered and detoured for more times, then the second branch is staggered and reversely detoured to the 1 st layer by layer along the circumferential direction, then the second branch is staggered and detoured for more times, and then the process is circulated until the NxM point on the 1 st layer is reached, and the point positions are staggered and staggered one by one according to the sequence
A slot position and
with individual slots or staggered alternately one by one
A slot position and
the slot positions are P polar pairs, starting from the point 1, every 2 points are used as a pair, aiming at the pair of the point dislocation layers, two paint stripping ends of the hairpin are twisted in opposite directions and then are respectively connected with the 2 points, aiming at the pair of the point same layer (namely, the pair positioned on the Nth layer), the two paint stripping ends of the hairpin are twisted in the same direction and then are respectively connected with the 2 points, the hairpins are sequenced according to the connection sequence, aiming at the hairpins in adjacent sequence and dislocation layers, the two hairpins are welded together by twisting the paint stripping ends, and aiming at the adjacent sequence and dislocation layers, the two hairpins are welded together by twisting the paint stripping endsSequentially and hierarchically arranged hairpins (namely, the hairpins positioned on the uppermost layer), wherein the two hairpins are welded together through a copper wire or an integral bus; in the U-phase winding, for a second branch, starting from a point 1, every N points are in one group, each group of point locations and corresponding point locations on a first branch are staggered by 1 slot location in the same direction, the staggered direction of adjacent groups of point locations is opposite, and the connection mode of the second branch and a hairpin in the first branch is the same; the V-phase winding is obtained by rotating M slot positions relative to the U-phase winding along the increasing direction of the slot number, and the W-phase winding is obtained by rotating M/2 slot positions relative to the U-phase winding along the increasing direction of the slot number.
Taking the example that flat wires of two branches connected in parallel in three phases are matched with a hairpin to penetrate and wind 48 slot positions and 5 layers as an example, the number of pole pairs is 4, the numbers 1-48 of the first row are slot numbers, the first column a-e are the layer numbers of conductors in the slots, 1-40 in the table only mark the sequence of the current flowing through the slots, wherein the number 1 is the position (namely U +) where the current of the branch starts to flow, the number 40 is the position (namely U-) where the current of the branch finally flows out, a line with an arrow represents the hairpin, the direction of the arrow is the direction of a twist type, and xy is defined as the y layer of the x slot position, wherein x belongs to [1, 48], y belongs to [ a, e ]:
in the first embodiment, as shown in fig. 3 and 4, the point locations are alternately staggered by 7 slot locations and 5 slot locations one by one, the winding connection routes from U + to U-in the first branch of the U-phase winding are sequentially 1a, 8b, 13c, 20d, 25e, 32e, 27d, 20c, 15b, 8a, 13a, 20b, 25c, 32d, 37e, 44e, 39d, 32c, 27b, 20a, 25a, 32b, 37c, 44d, 1e, 8e, 3d, 44c, 39b, 32a, 37a, 44b, 1c, 8d, 13e, 20e, 15d, 8c, 3b, 44a, and the winding connection routes from U + to U-in the second branch of the U-phase winding are sequentially 2a, 9b, 14c, 21d, 26e, 31e, 26d, 19c, 14b, 7a, 14b, 21d, 26e, 33d, 33e, 33c, and 33d, 43e, 38d, 31c, 26b, 19a, 26a, 33b, 38c, 45d, 2e, 7e, 2d, 43c, 38b, 31a, 38a, 45b, 2c, 9d, 14e, 19e, 14d, 7c, 2b, 43 a.
In the second embodiment, as shown in fig. 5 and 6, 5 slots and 7 slots are alternately staggered between point locations one by one in sequence, and when a flat wire of three-phase parallel two branches is used to be clamped and wound through 48 slots 5 layers, xy is defined as the y-th layer of the x-th slot, where x e [1, 48], y e [ a, e ], and the winding connection routes from U + to U-in the first branch of the U-phase winding are 3a, 8b, 15c, 20d, 27e, 32e, 25d, 20c, 13b, 8a, 15a, 20b, 27c, 32d, 39e, 44e, 37d, 32c, 25b, 20a, 27a, 32b, 39c, 44d, 3e, 8e, 1d, 44c, 37b, 32a, 39a, 44b, 3c, 8d, 15e, 20e, 13d, 8c, 1b, 44a, and the winding connection routes from U + to U-in the second branch are 3c, 8d, 15e, 20e, 13d, 8c, 1b, 44a and U + to U-phase winding connection routes from U-2, 7b, 14c, 19d, 26e, 33e, 26d, 21c, 14b, 9a, 14a, 19b, 26c, 31d, 38e, 45e, 38d, 33c, 26b, 21a, 26a, 31b, 38c, 43d, 2e, 9e, 2d, 45c, 38b, 33a, 38a, 43b, 2c, 7d, 14e, 21e, 14d, 9c, 2b, 45 a.
The invention breaks through the constraint that the existing flat wire motor can only be an even number of layers, so that the selection of the number of layers is not limited when the flat wire motor is designed; the invention realizes the direct welding of odd layers without additionally adding an expansion layer for welding, and can not cause the insulation hidden trouble caused by the reduction of an electric gap.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (3)
1. An odd-level flat wire winding, characterized in that: adopting a three-phase parallel two-branch flat wire to match with a hairpin to penetrate and wind N layers of 6 multiplied by M slot positions, wherein N is an odd number more than or equal to 3, and M is an even number more than or equal to 6; in the U-phase winding, point positions are marked according to the sequence of current flowing through the slots for a first branch, the 1 st point on the 1 st layer is taken as a starting point, the first branch is staggered and detoured to the Nth layer by layer along the circumferential direction, then the Nth layer is staggered and detoured for more times, then the second branch is staggered and reversely detoured to the 1 st layer by layer along the circumferential direction, then the second branch is staggered and detoured for more times, and then the process is circulated until the NxM point on the 1 st layer is reached, and the point positions are staggered and staggered one by one according to the sequence
A slot position and
with individual slots or staggered alternately one by one
A slot position and
the two paint stripping ends of the hairpins are twisted in opposite directions and then are respectively connected with the 2 point pairs, the two paint stripping ends of the hairpins are twisted in the same direction and then are respectively connected with the 2 point pairs, the hairpins are sequenced according to a connection sequence, the two hairpins are welded together by the twisted paint stripping ends for the hairpins in adjacent sequence and on the same layer, and the two hairpins are welded together by the twisted paint stripping ends for the hairpins in adjacent sequence and on the same layer through copper wires or an integral busbar; in the U-phase winding, for a second branch, starting from a point 1, every N points are arranged in one group, each group of point is staggered by 1 slot position in the same direction with the corresponding point position on the first branch, the staggered direction of adjacent groups of point positions is opposite, and the connection mode of the hairpin in the second branch and the first branch is the same; the V-phase winding is obtained by rotating M slot positions along the increasing direction of the slot number relative to the U-phase winding, and the W-phase winding is obtained by rotating M/2 slot positions along the increasing direction of the slot number relative to the U-phase winding.
2. An odd-level flat wire winding as in claim 1 wherein: when the flat wires of the three-phase parallel two branches are matched with each other to be clamped and wound for 48 slot positions and 5 layers, the pole pair number is 4, xy is defined as the y layer of the x slot position, wherein x belongs to [1, 48], y belongs to [ a, e ], and the winding connecting routes from U + to U-in the first branch of the U-phase winding are 1a, 8b, 13c, 20d, 25e, 32e, 27d, 20c, 15b, 8a, 13a, 20b, 25c, 32d, 37e, 44e, 39d, 32c, 27b, 20a, 25a, 32b, 37c, 44d, 1e, 8e, 3d, 44c, 39b, 32a, 37a, 44b, 1c, 8d, 13e, 20e, 15d, 8c, 3b, 44a in sequence, and the connecting routes from U + to U-in the second branch of the U-phase winding are 2a, 9c, 14e, 26d, 26e and 31e in sequence, 19c, 14b, 7a, 14a, 21b, 26c, 33d, 38e, 43e, 38d, 31c, 26b, 19a, 26a, 33b, 38c, 45d, 2e, 7e, 2d, 43c, 38b, 31a, 38a, 45b, 2c, 9d, 14e, 19e, 14d, 7c, 2b, 43 a.
3. An odd-level flat wire winding as in claim 1 wherein: when the flat wires of the three-phase parallel two branches are matched with each other to be clamped and wound for 48 slot positions and 5 layers, the pole pair number is 4, xy is the y layer of the x slot position, wherein x belongs to [1, 48], y belongs to [ a, e ], the winding connecting routes from U + to U-in the first branch of the U-phase winding are 3a, 8b, 15c, 20d, 27e, 32e, 25d, 20c, 13b, 8a, 15a, 20b, 27c, 32d, 39e, 44e, 37d, 32c, 25b, 20a, 27a, 32b, 39c, 44d, 3e, 8e, 1d, 44c, 37b, 32a, 39a, 44b, 3c, 8d, 15e, 20e, 13d, 8c, 1b, 44a, and the connecting routes from U + to U-in the second branch of the U-phase winding are 2a, 7c, 19e, 26d, 26e and 26e, 21c, 14b, 9a, 14a, 19b, 26c, 31d, 38e, 45e, 38d, 33c, 26b, 21a, 26a, 31b, 38c, 43d, 2e, 9e, 2d, 45c, 38b, 33a, 38a, 43b, 2c, 7d, 14e, 21e, 14d, 9c, 2b, 45 a.
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| CN115995900A (en) * | 2023-03-22 | 2023-04-21 | 哈尔滨理工大学 | Single-turn connection type winding and stator of electric drive permanent magnet motor |
| CN116054456A (en) * | 2023-04-01 | 2023-05-02 | 博格华纳汽车零部件（武汉）有限公司 | 72-slot 8-pole continuous wave 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 |
| CN117498601A (en) * | 2024-01-03 | 2024-02-02 | 博格华纳汽车零部件（武汉）有限公司 | 60-slot 10-pole 2-branch hairpin type flat wire armature winding and motor |
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| CN115995900B (en) * | 2023-03-22 | 2023-05-26 | 哈尔滨理工大学 | Single-turn connection type winding and stator of electric drive permanent magnet motor |
| CN116054456A (en) * | 2023-04-01 | 2023-05-02 | 博格华纳汽车零部件（武汉）有限公司 | 72-slot 8-pole continuous wave winding and motor |
| CN116054456B (en) * | 2023-04-01 | 2023-06-02 | 博格华纳汽车零部件（武汉）有限公司 | 72-slot 8-pole continuous wave 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 |
| CN116995839B (en) * | 2023-09-26 | 2023-12-22 | 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 |
| CN117498601A (en) * | 2024-01-03 | 2024-02-02 | 博格华纳汽车零部件（武汉）有限公司 | 60-slot 10-pole 2-branch hairpin type flat wire armature winding and motor |
| CN117498601B (en) * | 2024-01-03 | 2024-03-15 | 博格华纳汽车零部件（武汉）有限公司 | 60-slot 10-pole 2-branch hairpin type flat wire armature winding and motor |
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| CN115001184B (en) | 2023-09-26 |
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