CN115001184B - Odd-layer flat wire winding - Google Patents
Odd-layer flat wire winding Download PDFInfo
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- CN115001184B CN115001184B CN202210588106.2A CN202210588106A CN115001184B CN 115001184 B CN115001184 B CN 115001184B CN 202210588106 A CN202210588106 A CN 202210588106A CN 115001184 B CN115001184 B CN 115001184B
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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
-
- 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
Abstract
The invention discloses an odd-layer flat wire winding, which adopts three-phase parallel two-branch flat wires to pass through 6X M slot positions N layers in cooperation with hairpin winding, 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 a first branch, points are marked according to the sequence of current flowing through the slots, and the points are alternately staggered one by one according to the sequenceEach slot positionThe slots being alternatively staggered one by oneEach slot positionThe number of the slots, P is the pole pair number, for the second branch, starting from the 1 st point, every N point positions are in a group, each group of point positions is staggered by 1 slot position in the same direction with the corresponding point position on the first branch, and the staggered directions of the adjacent groups of point positions are opposite; the V-phase winding and the W-phase winding are respectively rotated by M and M/2 slots along the increasing direction of the slot number relative to the U-phase winding. The invention realizes direct welding of odd layers, does not need to additionally increase an expansion layer for welding, and does not cause insulation hidden trouble caused by reduction of electric gaps.
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 fullness rate and the motor efficiency of the motor, in a new energy automobile driving system, the currently used flat wire motor is almost all even-number-layer conductors (such as 2, 4, 6, 8 layers and the like), and odd-number-layer conductors rarely appear, because the flat wire connection of the odd-number-layer flat wire winding is difficult to realize, the selection of the number of turns is very limited when the flat wire motor is designed, and the number of turns of the motor is different from that of a round wire motor to be any positive integer.
At present, chinese patent CN111478477a discloses a motor stator and a motor, in which, as shown in fig. 1 and 2, the winding method of the odd-layer flat wire winding is 5 layers of flat wires, but an additional layer is added to extend to the 6 th layer for welding, which additionally increases the outer diameter of the winding, resulting in a reduction of the electrical gap between the outer diameter of the winding and the inner diameter of the casing, and bringing about the 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 of an even layer, so that the number of layers is not limited any more when the flat wire motor is designed, the direct welding of the odd layer is realized, an additional expansion layer is not needed to be added for welding, and the insulation hidden trouble caused by the reduction of an electric gap is avoided.
The technical scheme adopted by the invention is as follows:
an odd-layer flat wire winding adopts three-phase parallel two-branch flat wires to pass through 6X M slot N layers in cooperation with hairpin winding, 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 a first branch, marking points according to the sequence of current flowing through a slot, taking the 1 st point positioned on the 1 st layer as a starting point, firstly performing layer-by-layer staggered winding to the N layer along the circumferential direction, then performing layer-by-layer staggered winding for more times, performing layer-by-layer staggered reverse winding to the 1 st layer along the circumferential direction, performing staggered winding for more times on the 1 st layer, and then circulating until the N multiplied by M point positioned on the 1 st layer is reached, wherein the points are alternately staggered one by one according to the sequenceEach slot positionThe slots are alternatively staggered one by one>Slot and->The slot positions, P is the pole pair, from the 1 st point, every 2 points are taken as a pair, the two paint stripping ends of the hairpin are respectively connected with 2 points after twisting in opposite directions aiming at the pair of the point staggered layers, and the hairpin is aimed at the pair of the same layer of the pointThe two paint stripping ends of the card are respectively connected with 2 point positions after twisting in the same direction, the card is ordered according to the connection sequence, the two card is welded together after twisting through the paint stripping ends for adjacent sequence and staggered card issuing, and the two card is welded together through copper wires or integral bus bars for adjacent sequence and same layer card issuing; in the U-phase winding, for the second branch, starting from the 1 st point, every N point positions are in a group, each group of point positions is staggered by 1 slot position in the same direction with the corresponding point position on the first branch, the staggered directions of the adjacent groups of point positions are opposite, and the connection mode of the second branch and the hairpin in the first branch is the same; the V-phase winding is obtained by rotating M slots 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 slots along the increasing direction of the slot number relative to the U-phase winding.
Preferably, when the flat wire of the three-phase parallel two branches is matched with the hairpin to wind 48 slot 5 layers, the pole pair number is 4, xy is defined as the y layer of the x slot, wherein x epsilon [1, 48], y epsilon [ a, e ], and the winding connection route from U+ to U-in the first branch of the U phase winding is 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, the winding connection of u+ to U-in the second leg of the U-phase winding is in turn 2a, 9b, 14c, 21d, 26e, 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, 43a.
Preferably, when the flat wire of the three-phase parallel two branches is matched with the hairpin to wind 48 slot 5 layers, the pole pair number is 4, xy is defined as the y layer of the x slot, wherein x epsilon [1, 48], y epsilon [ a, e ], and the winding connection route from U+ to U-in the first branch of the U phase winding is 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 in sequence, the winding connection of u+ to U-in the second leg of the U-phase winding is in turn 2a, 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, 45a.
The beneficial effects of the invention are as follows:
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 any more when the flat wire motor is designed; the invention realizes direct welding of odd layers, does not need to additionally increase an expansion layer for welding, and does not cause insulation hidden trouble caused by reduction of electric gaps.
Drawings
Fig. 1 is a U-phase first leg winding wiring diagram of a conventional odd-layer flat wire winding.
Fig. 2 is a U-phase second leg winding wiring diagram of a conventional odd-layer flat wire winding.
Fig. 3 is a U-phase first branch winding wiring diagram when a flat wire with three-phase parallel two branches is adopted to match with a hairpin to wind 48 slots by 5 layers in the first embodiment of the invention.
Fig. 4 is a wiring diagram of a U-phase second branch winding when a flat wire with two branches connected in parallel in three phases is adopted to match with a hairpin to wind 48 slots by 5 layers in the first embodiment of the invention.
Fig. 5 is a wiring diagram of a U-phase first branch winding when a flat wire with two branches connected in parallel in three phases is adopted to match with a hairpin to wind 48 slots by 5 layers in the second embodiment of the invention.
Fig. 6 is a wiring diagram of a U-phase second branch winding when a flat wire with two branches connected in parallel in three phases is adopted to match with a hairpin to wind 48 slots by 5 layers in the second embodiment of the invention.
Detailed Description
The invention is further described below with reference to the drawings and examples.
An odd-layer flat wire winding adopts three-phase parallel two-branch flat wires to pass through 6X M slot N layers in cooperation with hairpin winding, 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 positions of the points are marked according to the sequence of current flowing through the slots so as to be positioned on the 1 st layerThe 1 st point is used as a starting point, firstly, the winding line is staggered from the nth layer along the circumferential direction, then the winding is performed for more times at the nth layer, then the reverse winding line is staggered from the nth layer to the 1 st layer along the circumferential direction, then the winding is performed for more times at the 1 st layer, and then the cycle is performed until the NxM point positioned at the 1 st layer is reached, wherein the point positions are staggered alternately one by one according to the sequenceEach slot positionThe slots are alternatively staggered one by one>Slot and->The method comprises the steps that from the 1 st point, every 2 points are taken as a pair, two paint stripping ends of a card clip are twisted in opposite directions and then are respectively connected with the 2 points, for the pair of the same layers of the points (namely, the pair positioned on the N th layer), the two paint stripping ends of the card clip are twisted in the same direction and then are respectively connected with the 2 points, the card clips are ordered according to the connection sequence, for the card clips of adjacent sequence and staggered layers, the two card clips are welded together after being twisted by the paint stripping ends, and for the card clips of adjacent sequence and same layer (namely, the card clips positioned on the uppermost layer), the two card clips are welded together through copper wires or integral buses; in the U-phase winding, for the second branch, starting from the 1 st point, every N point positions are in a group, each group of point positions is staggered by 1 slot position in the same direction with the corresponding point position on the first branch, the staggered directions of the adjacent groups of point positions are opposite, and the connection mode of the second branch and the hairpin in the first branch is the same; the V-phase winding is obtained by rotating M slots 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 slots along the increasing direction of the slot number relative to the U-phase winding.
Taking a case that a flat wire of two parallel three-phase branches is matched with a hairpin to pass through 48 slot 5 layers, the pole pair number is 4, the numbers 1-48 of a first row are slot numbers, the first columns a-e are layer numbers of conductors in the slots, 1-40 in the table only marks the sequence of current flowing in the slots, wherein the number 1 is the position (U+), where the current starts to flow in, of the branch, the number 40 is the position (U-), where the current finally flows out, of the branch, the arrowed line represents the hairpin, the arrowed direction is the torsion direction, xy is defined as the y layer of the x slot, x is [1, 48], y is [ a, e ]:
in a first embodiment, as shown in fig. 3 and 4, the positions are alternately staggered by 7 slots and 5 slots one by one in order, the winding connection routes from u+ to U-in the first leg 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 leg of the U-phase winding are sequentially 2a, 9b, 14c, 21d, 26e, 31e, 26d, 19c, 14b, 7a, 14a, 21b, 26c, 33d, 38e, 38b, 31b, 14c, 43d, 33e, 43e, 31b, 14c, 43d, 33c, 43e, 31b, 14c, 43c, 14c, 2c, 38d, 43e, 38c, 2c, 43e, 38b, and 43 c.
In the second embodiment, as shown in fig. 5 and 6, the positions are staggered by 5 slots and 7 slots one by one alternately according to the sequence, when the flat wire of the three-phase parallel two branches is matched with the hairpin to wind 48 slots 5 layers, xy is defined as the y layer of the x-th slot, wherein x is [1, 48], y is [ a, e ], and the winding connection route from U+ to U-in the first branch of the U-phase winding is 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, the winding connection of u+ to U-in the second leg of the U-phase winding is in turn 2a, 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, 45a.
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 any more when the flat wire motor is designed; the invention realizes direct welding of odd layers, does not need to additionally increase an expansion layer for welding, and does not cause insulation hidden trouble caused by reduction of electric gaps.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (2)
1. An odd-layer flat wire winding, characterized in that: the flat wire of the three-phase parallel two branches is matched with the hairpin to wind N layers of 6X M slot positions, 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 a first branch, marking points according to the sequence of current flowing through a slot, taking the 1 st point positioned on the 1 st layer as a starting point, firstly performing layer-by-layer staggered winding to the N layer along the circumferential direction, then performing layer-by-layer staggered winding for more times, performing layer-by-layer staggered reverse winding to the 1 st layer along the circumferential direction, performing staggered winding for more times on the 1 st layer, and then circulating until the N multiplied by M point positioned on the 1 st layer is reached, wherein the points are alternately staggered one by one according to the sequenceSlot and->The number of slots, P is the pole pair number; starting from the 1 st point, taking every 2 points as a pair, twisting two paint stripping ends of a card clip in opposite directions for the pair of point staggered layers, respectively connecting the two paint stripping ends of the card clip with the adjacent 2 points, twisting the two paint stripping ends of the card clip in the same direction for the pair of point staggered layers, respectively connecting the two paint stripping ends of the card clip with the adjacent 2 points, sequencing the card clips according to a connection sequence, twisting the two card clips in the adjacent sequence and staggered layers, welding the two card clips together through the paint stripping ends, and welding the two card clips together through copper wires or integral buses for the card clips in the adjacent sequence and same layer; in the U-phase winding, for the second branch, starting from point 1, every N points are in groups, each group of points is corresponding to point 1The corresponding point positions on one branch are staggered by 1 slot position in the same direction, the staggered directions of the adjacent groups of point positions are opposite, and the connection mode of the hairpin in the second branch and the hairpin in the first branch are the same; the V-phase winding rotates M slots along the increasing direction of the slot number relative to the U-phase winding, and the W-phase winding rotates M/2 slots along the increasing direction of the slot number relative to the U-phase winding;
when the flat wire of the three-phase parallel two branches is matched with the hairpin to wind 48 slot 5 layers, the pole pair number is 4, xy is defined as the y layer of the x slot, wherein x epsilon [1, 48], y epsilon [ a, e ], and 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, the winding connection of u+ to U-in the second leg of the U-phase winding is in turn 2a, 9b, 14c, 21d, 26e, 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, 43a.
2. An odd-layer flat wire winding, characterized in that: the flat wire of the three-phase parallel two branches is matched with the hairpin to wind N layers of 6X M slot positions, 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 a first branch, marking points according to the sequence of current flowing through a slot, taking the 1 st point positioned on the 1 st layer as a starting point, firstly performing layer-by-layer staggered winding to the N layer along the circumferential direction, then performing layer-by-layer staggered winding for more times, performing layer-by-layer staggered reverse winding to the 1 st layer along the circumferential direction, performing staggered winding for more times on the 1 st layer, and then circulating until the N multiplied by M point positioned on the 1 st layer is reached, wherein the points are alternately staggered one by one according to the sequenceSlot and->The number of slots, P is the pole pair number; starting from the 1 st point, taking every 2 points as a pair, twisting two paint stripping ends of a card clip in opposite directions for the pair of point staggered layers, respectively connecting the two paint stripping ends of the card clip with the adjacent 2 points, twisting the two paint stripping ends of the card clip in the same direction for the pair of point staggered layers, respectively connecting the two paint stripping ends of the card clip with the adjacent 2 points, sequencing the card clips according to a connection sequence, twisting the two card clips in the adjacent sequence and staggered layers, welding the two card clips together through the paint stripping ends, and welding the two card clips together through copper wires or integral buses for the card clips in the adjacent sequence and same layer; in the U-phase winding, for the second branch, starting from the 1 st point, every N point positions are in a group, each group of point positions is staggered by 1 slot position in the same direction with the corresponding point position on the first branch, the staggered directions of the adjacent groups of point positions are opposite, and the connection mode of the second branch and the hairpin in the first branch is the same; the V-phase winding rotates M slots along the increasing direction of the slot number relative to the U-phase winding, and the W-phase winding rotates M/2 slots along the increasing direction of the slot number relative to the U-phase winding;
when the flat wire of the three-phase parallel two branches is matched with the hairpin to wind 48 slot 5 layers, the pole pair number is 4, xy is defined as the y layer of the x slot, wherein x epsilon [1, 48], y epsilon [ 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 in sequence, the winding connection of u+ to U-in the second leg of the U-phase winding is in turn 2a, 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, 45a.
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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| 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 |
| 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 |
| 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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