CN110829641B - Hairpin flat wire motor stator and hairpin flat wire motor - Google Patents
Hairpin flat wire motor stator and hairpin flat wire motor Download PDFInfo
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- CN110829641B CN110829641B CN201911034027.1A CN201911034027A CN110829641B CN 110829641 B CN110829641 B CN 110829641B CN 201911034027 A CN201911034027 A CN 201911034027A CN 110829641 B CN110829641 B CN 110829641B
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- 238000004804 winding Methods 0.000 claims abstract description 272
- 238000003466 welding Methods 0.000 claims abstract description 7
- 239000004020 conductor Substances 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000010923 batch production Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for 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
- 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
- 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
- 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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Abstract
The invention provides a hairpin flat wire motor stator and a hairpin flat wire motor, wherein the hairpin flat wire motor stator comprises: the stator core structure is internally provided with a plurality of winding slots extending along the self axial direction at uniform intervals, one end face side of the stator core is a winding hairpin end, and the other end face side of the stator core is a winding welding end; a stator winding disposed in the winding slot, the stator winding comprising: the winding comprises a first phase winding, a second phase winding and a third phase winding, wherein the first phase winding, the second phase winding and the third phase winding respectively comprise four parallel branches; the input terminals and the output terminals of the first phase winding, the second phase winding and the third phase winding are distributed at the winding card sending end. The invention can better meet the requirements of motor performance design and manufacturing manufacturability design under the conditions of a low-voltage platform and high speed of the driving motor of the new energy automobile.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a hairpin flat wire motor stator and a hairpin flat wire motor.
Background
The design of the flat wire motor winding scheme not only needs to meet the requirements of motor performance, but also needs to consider the manufacturability of mass production and manufacturing. The number of parallel branches designed by the conventional flat wire motor winding scheme is small at present, so that the requirements of motor performance design and manufacturing process design are met. However, the domestic new energy automobile driving motor is not only in the low-voltage platform development stage, but also is continuously high-speed, so that the flat wire winding scheme with few parallel branches is difficult to meet the design requirement of motor performance. Patent CN107408855 proposes a four-way parallel flat wire winding scheme, but the connection of the outlet end transition connection wire of the winding scheme is relatively complex, and is not beneficial to reducing the height size of the end of the outlet end, and there is no advantage of compact structure.
Disclosure of Invention
The invention aims to provide a hairpin flat wire motor stator and a hairpin flat wire motor, which can improve the structural compactness and the manufacturing manufacturability of a stator winding.
The invention provides a hairpin flat wire motor stator, comprising:
the stator core structure is provided with a plurality of winding slots extending along the axial direction of the stator core structure at intervals, and a winding hairpin end and a winding welding end are respectively arranged at two sides of the end face of the stator core;
a stator winding included in the winding slot, the stator winding including: the winding comprises a first phase winding, a second phase winding and a third phase winding, wherein the first phase winding, the second phase winding and the third phase winding respectively comprise four parallel branches; the input terminals and the output terminals of the first phase winding, the second phase winding and the third phase winding are distributed on the side of a winding hairpin end.
In the hairpin flat wire motor stator according to the embodiment of the invention, a plurality of conductors are arranged in the winding slot, and the conductors in the slot need to be connected at two sides of the end surface of the stator core according to a certain rule. One side of the winding is a winding hairpin end, and the other side of the winding hairpin end is a winding welding end.
In the hairpin flat wire motor stator according to the embodiment of the invention, the number of conductors in each winding slot is 4, 6, 8, 10 or 12.
In the hairpin flat wire motor stator according to the embodiment of the invention, the first phase winding, the second phase winding and the third phase winding each include a first branch, a second branch, a third branch and a fourth branch, respectively. The relative positions of the three-phase winding outgoing line and the star point line can be divided into three types. The following were used:
the formula I: the input lead ends of the branches of the first phase winding, the second phase winding and the third phase winding are sequentially arranged at the winding card sending end as a first branch of the first phase winding, a second branch of the first winding, a third branch of the third phase winding, a fourth branch of the third phase winding, a first branch of the second phase winding, a second branch of the second phase winding, a third branch of the first phase winding, a fourth branch of the first phase winding, a first branch of the third phase winding, a second branch of the third phase winding, a third branch of the second phase winding and a fourth branch of the second phase winding. See figure 4 for details.
Type II: the input lead ends of the branches of the first phase winding, the second phase winding and the third phase winding are sequentially arranged at the winding card sending end as a first branch of the first phase winding, a second branch of the first phase winding, a first branch of the second phase winding, a second branch of the second phase winding, a third branch of the first phase winding, a fourth branch of the first phase winding, a first branch of the third phase winding, a second branch of the third phase winding, a third branch of the second phase winding, a fourth branch of the second phase winding, a third branch of the third phase winding and a fourth branch of the third phase winding. See figure 5 for details.
A form III: the arrangement of the input lead ends of the branches of the first phase winding, the second phase winding and the third phase winding at the winding hairpin end is as follows in sequence: a first branch, a second branch, a third branch and a fourth branch of the first phase winding; a first branch, a second branch, a third branch and a fourth branch of the third phase winding; and a first branch, a second branch, a third branch, and a fourth branch of the second phase winding. See figure 6 for details.
In the hairpin flat wire motor stator according to the embodiment of the invention, each branch of the first phase winding, the second phase winding and the third phase winding is formed by alternately connecting winding coils with a span of 5 winding slots or a span of 7 winding slots, so as to avoid circulating current generated among different parallel branches.
In the hairpin flat wire motor stator according to the embodiment of the invention, four branches of each phase winding of the first phase winding, the second phase winding and the third phase winding are connected in parallel; or series-parallel connection.
In the hairpin flat wire motor stator according to the embodiment of the invention, the number of the winding slots is generally an even number, such as 36 slots, 48 slots, 60 slots, 72 slots, 96 slots, and the like, but is not limited thereto.
A hairpin flat wire motor comprises any one of the hairpin flat wire motor stators and a rotor, wherein the rotor is coaxially arranged in the hairpin flat wire motor stator.
The beneficial effect of this scheme:
1. the invention designs a four-way parallel flat wire winding scheme, which can better meet the requirements of motor performance design and manufacturing manufacturability design under the conditions of a low-voltage platform and high speed of a driving motor of a new energy automobile.
2. The winding scheme can avoid the generation of circulating current between the same-phase different parallel branches.
3. The winding scheme is beneficial to increasing the number of conductor layers in the slot so as to further reduce the size of the conductor, thereby reducing the influence of high-speed skin effect.
4. The winding of the winding scheme has the advantages of simple and compact structure, small size of the end part of the winding, concentrated distribution of three-phase outgoing lines and good manufacturability in batch production.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a top view block diagram of a hairpin flat wire motor stator core in some embodiments of the invention.
Fig. 2 is a schematic diagram of the distribution of conductors in a slot of a stator core of a hairpin flat-wire motor in some embodiments of the invention.
Fig. 3 is a perspective view of a hairpin flat wire motor stator in some embodiments of the invention.
Fig. 4 is a first winding diagram, pattern i, of a hairpin flat wire motor stator in some embodiments of the invention.
Fig. 5 is a second winding diagram, version ii, of a hairpin flat wire motor stator in some embodiments of the invention.
Fig. 6 is a third winding diagram, version iii, of a hairpin flat wire motor stator in some embodiments of the invention.
Fig. 7-11 are winding diagrams of respective legs of a first phase winding of a hairpin flat wire motor stator in some embodiments of the invention.
Detailed Description
Referring also to fig. 1-3, fig. 1 is a schematic top view of a hairpin flat wire motor stator core in some embodiments of the invention. Fig. 2 is a schematic diagram of the distribution of conductors in a slot of a stator core of a hairpin flat-wire motor in some embodiments of the invention. Fig. 3 is a perspective view of a hairpin flat wire motor stator in some embodiments of the invention. This hairpin flat line motor stator includes: a stator core structure 10 and stator windings 20. The stator core structure 10 is provided with a plurality of winding slots 11 extending along its own axial direction at regular intervals inside, and the conductors 210 are distributed in the winding slots 11. One side of two end faces of the stator core 10 is a winding hairpin end, and the other side is a winding welding end. The stator winding 20 is formed of an in-slot conductor 210, and is disposed in the winding slot 11. The stator winding 20 includes: a first phase winding, a second phase winding, and a third phase winding. The first phase winding, the second phase winding and the third phase winding respectively comprise four parallel branches; the input terminals 211 and the output terminals 212 of the first phase winding, the second phase winding and the third phase winding are distributed at the hairpin end side of the windings, and the input terminals 211 and the output terminals 212 of each branch of the first phase winding, the second phase winding and the third phase winding are arranged in a concentrated manner.
Specifically, in some embodiments, several conductors 210, conductors 12 are placed inside the winding slot 11 and regularly connected on two end face sides of the stator core, one side is a winding hairpin end, and the other side is a winding welding end.
In some embodiments, the number of the conductors 210 in each winding slot 11 is 4, 6, 8, 10 or 12. 8 conductors are provided in fig. 1.
In some embodiments, the first phase winding, the second phase winding and the third phase winding each include a first branch, a second branch, a third branch and a fourth branch, respectively. The four branches of the first phase winding are a first branch a1, a second branch a2, a third branch A3 and a fourth branch a4, respectively. The four branches of the second phase winding are a first branch B1, a second branch B2, a third branch B3 and a fourth branch B4, respectively. The four branches of the third phase winding are a first branch C1, a second branch C2, a third branch C3 and a fourth branch C4, respectively.
As shown in fig. 4, the input terminals 211 of the branches of the first phase winding, the second phase winding and the third phase winding are arranged at the winding hairpin end in sequence as a first branch a1 of the first phase winding, a second branch a2 of the first phase winding, a third branch C3 of the third phase winding, a fourth branch C4 of the third phase winding, a first branch B1 of the second phase winding, a second branch B2 of the second phase winding, a third branch A3 of the first phase winding, a fourth branch a4 of the first phase winding, a first branch C1 of the third phase winding, a second branch C2 of the third phase winding, a third branch B3 of the second phase winding and a fourth branch B4 of the second phase winding. The first, second, third and fourth legs a1, a2, A3, a4 of the first phase winding are wound as shown in fig. 7-11. Here, L1, L2, L3, L4, L5, L6, L7, and L8 respectively represent the in-slot conductors 210 in different layers, as shown in fig. 2. The black dots indicate the layer in which the conductor is located within the winding channel. The thick solid line indicates the end connection on the lead-out wire side of the three-phase winding, and the thin solid line indicates the end connection on the non-lead-out wire side of the three-phase winding. The black arrows indicate the direction in which the in-groove conductors constituting the branch are connected to the output terminal along the input terminal, wherein "+" in each figure represents the input terminal 211 of a certain branch and "-" represents the output terminal 212 of a certain branch.
As shown in fig. 5, in some embodiments, the first phase winding, the second phase winding, and the third phase winding each include a first branch, a second branch, a third branch, and a fourth branch, respectively; the input terminals 211 of the branches of the first phase winding, the second phase winding and the third phase winding are sequentially arranged at the winding hairpin end as a first branch a1 of the first phase winding, a second branch a2 of the first phase winding, a first branch B1 of the second phase winding, a second branch B2 of the second phase winding, a third branch A3 of the first phase winding, a fourth branch a4 of the first phase winding, a first branch C1 of the third phase winding, a second branch C2 of the third phase winding, a third branch B3 of the second phase winding, a fourth branch B4 of the second phase winding, a third branch C3 of the third phase winding and a fourth branch C4 of the third phase winding.
As shown in fig. 6, in some embodiments, the first phase winding, the second phase winding, and the third phase winding each include a first branch, a second branch, a third branch, and a fourth branch, respectively; the arrangement of the input terminals 211 of the branches of the first phase winding, the second phase winding and the third phase winding at the winding card sending end is as follows in sequence: a first branch a1, a second branch a2, a third branch A3, and a fourth branch a4 of the first winding; a first branch C1, a second branch C2, a third branch C3, and a fourth branch C4 of the third winding; and a first branch B1, a second branch B2, a third branch B3, and a fourth branch B4 of the second phase winding.
In some embodiments, each branch of the first phase winding, the second phase winding and the third phase winding is formed by alternately connecting winding coils with the span of 5 winding slots 11 or the span of 7 winding slots 11, so as to avoid circulating current between different branches.
In some embodiments, the four branches of each of the first phase winding, the second phase winding, and the third phase winding are connected in parallel with each other; or series-parallel connection.
In some embodiments, the number of winding slots is generally even, such as 36 slots, 48 slots, 60 slots, 72 slots, 96 slots, or the like. Although it is not limited thereto.
The invention also provides a hairpin flat wire motor which comprises any one of the hairpin flat wire motor stators and a rotor, wherein the rotor is coaxially arranged in the hairpin flat wire motor stator.
The hairpin flat wire motor stator and the hairpin flat wire motor provided by the embodiments of the invention are described in detail above, and the principle and the embodiments of the invention are explained in the present document by applying specific examples, and the description of the embodiments above is only used to help understanding the invention. Meanwhile, for those skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed, and in summary, the content of the present specification should not be construed as limiting the present invention.
Claims (6)
1. Hairpin flat line motor stator, its characterized in that includes:
the stator core structure is internally provided with a plurality of winding slots extending along the self axial direction at uniform intervals, one end face side of the stator core is a winding hairpin end, and the other end face side of the stator core is a winding welding end;
a stator winding included in the winding slot, the stator winding including: the winding comprises a first phase winding, a second phase winding and a third phase winding, wherein the first phase winding, the second phase winding and the third phase winding respectively comprise four parallel branches; the input terminals and the output terminals of the first phase winding, the second phase winding and the third phase winding are distributed at the winding card sending end;
the first phase winding, the second phase winding and the third phase winding respectively comprise a first branch, a second branch, a third branch and a fourth branch, and the relative positions of the outgoing line of the three-phase winding and the star point line are divided into three types:
the formula I: the input lead ends of the branches of the first phase winding, the second phase winding and the third phase winding are sequentially arranged at the winding card sending end as a first branch of the first phase winding, a second branch of the first winding, a third branch of the third phase winding, a fourth branch of the third phase winding, a first branch of the second phase winding, a second branch of the second phase winding, a third branch of the first phase winding, a fourth branch of the first phase winding, a first branch of the third phase winding, a second branch of the third phase winding, a third branch of the second phase winding and a fourth branch of the second phase winding;
type II: the input lead ends of the branches of the first phase winding, the second phase winding and the third phase winding are sequentially arranged at the winding card sending end as a first branch of the first phase winding, a second branch of the first phase winding, a first branch of the second phase winding, a second branch of the second phase winding, a third branch of the first phase winding, a fourth branch of the first phase winding, a first branch of the third phase winding, a second branch of the third phase winding, a third branch of the second phase winding, a fourth branch of the second phase winding, a third branch of the third phase winding and a fourth branch of the third phase winding;
a form III: the arrangement of the input lead ends of the branches of the first phase winding, the second phase winding and the third phase winding at the winding hairpin end is as follows in sequence: a first branch, a second branch, a third branch and a fourth branch of the first phase winding; a first branch, a second branch, a third branch and a fourth branch of the third phase winding; and a first branch, a second branch, a third branch, and a fourth branch of the second phase winding.
2. The hairpin flat wire motor stator of claim 1 wherein a plurality of conductors are disposed in the winding slots, the conductors in the slots being connected at both end face sides of the stator core according to a certain rule; one side of the winding is a winding hairpin end, and the other side of the winding hairpin end is a winding welding end.
3. The hairpin flat wire motor stator of claim 1 wherein the number of conductors in each winding slot may be 4, 6, 8, 10 or an even number of 12 and more.
4. The hairpin flat wire motor stator of claim 1 wherein each leg of the first, second and third phase windings is formed by winding coils spanning 5 winding slots or 7 winding slots alternately connected to avoid circulating currents between different parallel legs.
5. The hairpin flat wire motor stator of claim 1 wherein the four legs of each of the first, second and third phase windings are connected in parallel with each other; or series-parallel connection.
6. A flat hairpin motor comprising the stator of any one of claims 1 to 5 and a rotor coaxially disposed within the stator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911034027.1A CN110829641B (en) | 2019-10-29 | 2019-10-29 | Hairpin flat wire motor stator and hairpin flat wire motor |
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| CN201911034027.1A CN110829641B (en) | 2019-10-29 | 2019-10-29 | Hairpin flat wire motor stator and hairpin flat wire motor |
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| CN110829641A CN110829641A (en) | 2020-02-21 |
| CN110829641B true CN110829641B (en) | 2022-04-01 |
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| CN111355316B (en) * | 2020-04-09 | 2021-07-30 | 合肥巨一动力系统有限公司 | Flat wire motor stator and flat wire motor |
| CN111355317B (en) * | 2020-04-09 | 2021-08-27 | 合肥巨一动力系统有限公司 | Flat wire stator and flat wire motor |
| WO2022077498A1 (en) * | 2020-10-16 | 2022-04-21 | 华为数字能源技术有限公司 | Hairpin motor, power assembly, and vehicle |
| CN112491185B (en) * | 2020-10-26 | 2022-03-29 | 东风汽车集团有限公司 | Flat wire motor stator and flat wire motor |
| CN113162280B (en) * | 2021-04-14 | 2023-06-30 | 浙江龙芯电驱动科技有限公司 | Anti-loose stator assembly and motor |
| CN113258702B (en) * | 2021-06-09 | 2024-06-18 | 厦门势拓御能科技有限公司 | Flat wire motor, flat wire motor stator and winding method thereof |
| CN113922552B (en) * | 2021-09-09 | 2022-11-11 | 智新科技股份有限公司 | Flat wire hairpin type stator structure and motor |
| CN114337033A (en) * | 2021-09-22 | 2022-04-12 | 华为数字能源技术有限公司 | Three-phase flat wire wave winding structure, three-phase motor, power assembly and vehicle |
| CN114204708B (en) * | 2021-10-30 | 2023-04-07 | 华为数字能源技术有限公司 | Stator, flat wire motor, power assembly and vehicle |
| CN114389389A (en) * | 2021-12-31 | 2022-04-22 | 东风汽车集团股份有限公司 | Flat wire motor stator and motor |
| CN115549333A (en) * | 2022-07-13 | 2022-12-30 | 舜驱动力科技(南通)有限公司 | Ten-layer flat copper wire winding motor stator |
| CN115995901B (en) * | 2023-03-25 | 2023-06-02 | 博格华纳汽车零部件（武汉）有限公司 | 72-slot 8-pole hairpin type flat wire armature winding and motor |
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| CN108539891A (en) * | 2018-06-06 | 2018-09-14 | 长鹰信质科技股份有限公司 | Flat wire continuous wave is around dislocation winding and contains the stator of its winding |
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Denomination of invention: The stator of the card issuing flat wire motor and the card issuing flat wire motor Effective date of registration: 20231130 Granted publication date: 20220401 Pledgee: China Merchants Bank Limited by Share Ltd. Hefei branch Pledgor: HEFEI JUYI POWER SYSTEM Co.,Ltd. Registration number: Y2023980068572 |