WO2021077595A1 - Structure d'enroulement hybride de fil de cuivre plat à 6 couches et 72 rainures et moteur électrique appliquant la structure d'enroulement - Google Patents

Structure d'enroulement hybride de fil de cuivre plat à 6 couches et 72 rainures et moteur électrique appliquant la structure d'enroulement Download PDF

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Publication number
WO2021077595A1
WO2021077595A1 PCT/CN2019/127442 CN2019127442W WO2021077595A1 WO 2021077595 A1 WO2021077595 A1 WO 2021077595A1 CN 2019127442 W CN2019127442 W CN 2019127442W WO 2021077595 A1 WO2021077595 A1 WO 2021077595A1
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WO
WIPO (PCT)
Prior art keywords
winding
winding structure
slot
layer
copper wire
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Application number
PCT/CN2019/127442
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English (en)
Chinese (zh)
Inventor
王丽
Original Assignee
浙江龙芯电驱动科技有限公司
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Application filed by 浙江龙芯电驱动科技有限公司 filed Critical 浙江龙芯电驱动科技有限公司
Publication of WO2021077595A1 publication Critical patent/WO2021077595A1/fr

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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

Definitions

  • the invention relates to a motor winding structure and a motor using the winding structure, in particular to a 72-slot 6-layer flat copper wire mixed winding structure and a motor using the winding structure.
  • the difference between the flat wire motor and the round wire motor is the copper wire forming method.
  • the flat wire is beneficial to the improvement of the slot full rate of the motor.
  • the slot full rate of the round wire motor is about 40%, while the slot full rate of the flat wire motor can reach More than 60%.
  • the improvement of the slot full rate means that more copper wires can be filled under the premise of the same space. The lower the resistance of the motor, the lower the copper loss under the same current.
  • the contact area between the copper conductors in the flat wire motor slot is larger, and the thermal conductivity is better.
  • the double-layer wave winding structure includes components distributed in different layers.
  • the inductance values of the components in different layers are different.
  • the smallest coil unit itself is not self-balanced. It is impossible to change the series-parallel connection between the smallest coil units. To realize the power change of multiple power levels.
  • the purpose of the present invention is to provide a 72-slot 6-layer flat copper wire hybrid winding structure and a motor using the winding structure. Aiming at the shortcomings of the prior art, the structure layout of the special-shaped wire at the winding end is greatly simplified, and the end of the winding structure is reduced. The size of the space.
  • a 72-slot 6-layer flat copper wire hybrid winding structure which is characterized in that it comprises a three-phase hybrid winding structure distributed in at least 6 winding layers, and each phase of the hybrid winding structure is composed of two winding branches.
  • the winding branches are composed of a plurality of winding elements evenly distributed in each winding layer, and adjacent winding elements are alternately distributed in the same slot and adjacent slots.
  • the lead ends of each of the winding branches are located in the innermost winding layer.
  • the lead ends of each of the winding branches are located in the outermost winding layer.
  • the lead-out terminal of the winding branch is located in the innermost winding layer or the outermost winding layer.
  • the pitches of the lead ends of the winding branches are not equal.
  • each winding branch is a U-shaped wire.
  • the pitches of the welding ends of the winding branches are equal.
  • the three-phase hybrid winding structure is distributed in 72-slot 8-pole windings or 72-slot 12-pole windings.
  • the motor includes the rectangular copper wire hybrid winding structure as described in any one of the above.
  • the 72-slot 6-layer flat copper wire hybrid winding structure of the present invention and the motor using the winding structure are easy to realize automatic wire insertion, easy to connect, simplify the connection process, and greatly simplify the design of the special-shaped wire at the end of the winding.
  • the structure layout reduces the space size occupied by the end of the winding structure, and achieves the purpose of the present invention.
  • Figure 1 is an expanded schematic diagram of the three-phase winding of the 72-slot, 6-layer, 8-pole flat copper wire hybrid winding structure of the present invention
  • FIG. 2 is a schematic diagram of the connection of the 72-slot 6-layer 8-pole flat copper wire hybrid winding structure of the present invention
  • FIG. 3 is an expanded schematic diagram of the three-phase winding of the 72-slot 6-layer 12-pole flat copper wire hybrid winding structure of the present invention.
  • FIG. 4 is a schematic diagram of the connection of the 72-slot 6-layer 12-pole flat copper wire hybrid winding structure of the present invention.
  • the 72-slot 6-layer rectangular copper wire hybrid winding structure of the present invention includes a three-phase hybrid winding structure distributed in at least six winding layers, and each phase hybrid winding structure includes a plurality of winding units It consists of 2 winding branches.
  • the winding units on each winding branch are distributed in 6 pairs of poles, and the number of winding units distributed under each pole is different.
  • the number of winding units of a winding branch under 8 poles is distributed as: 9, 6, 6, 6, 9, 12, 12, 12, and the other winding branch corresponds to the winding under the pole
  • the number of units is distributed as: 9, 12, 12, 12, 9, 6, 6, 6.
  • the two winding branches are distributed evenly and symmetrically in different winding layers.
  • each winding branch includes a U-shaped lead wire end and a welding end.
  • the pitches of the welding ends of each winding branch are equal, which facilitates automatic wire insertion.
  • the lead ends of each winding branch are arranged on the outermost winding layer and separated by a slot, which is convenient for connection and simplifies the connection process.
  • the lead ends of the two winding branches can be arranged on the first winding layer of the first and third slots (as shown in Figure 1 U1 and U2 are branch lead marks), which greatly simplifies the winding
  • the structural layout of the end special-shaped wire reduces the size of the space occupied by the end of the winding structure.
  • FIG. 1 it is a schematic diagram of the connection of the winding structure of this embodiment, taking U-phase stacked windings as an example (V and W phases are similar to U phases, and will not be repeated here):
  • the U-phase 1 branch winding includes a winding branch formed by 72 unit windings in series.
  • One branch of the winding winds in from the U1 position in Figure 1, and finally outputs from the X1 position to the three-phase center point.
  • the slot numbers of a branch connected in series are: 1 ⁇ 10 ⁇ 19 ⁇ 10 ⁇ 20 ⁇ 29 ⁇ 38 ⁇ 29 ⁇ 39 ⁇ 48 ⁇ 57 ⁇ 48 ⁇ 57 ⁇ 66 ⁇ 3 ⁇ 66 ⁇ 2 ⁇ 11 ⁇ 20 ⁇ 11 ⁇ 19 ⁇ 28 ⁇ 37 ⁇ 28.
  • the slot number that another branch passes through in series is: 3 ⁇ 12 ⁇ 21 ⁇ 12 ⁇ 21 ⁇ 30 ⁇ 39 ⁇ 30 ⁇ 38 ⁇ 47 ⁇ 56 ⁇ 47 ⁇ 56 ⁇ 47 ⁇ 37 ⁇ 46 ⁇ 55 ⁇ 46 ⁇ 55 ⁇ 64 ⁇ 1 ⁇ 64 ⁇ 56 ⁇ 65 ⁇ 2 ⁇ 65.
  • Each branch winding element is connected in series through a mixed connection form, and each branch is balanced.
  • FIG. 3 an expanded view of a 72-slot 12-pole 6-layer rectangular copper wire winding structure, which includes a three-phase mixed winding structure distributed in at least six winding layers.
  • the hybrid winding structure of each phase includes 2 winding branches composed of 6 winding units.
  • the 6 winding units are distributed under 6 pairs of poles in a one-to-one correspondence.
  • Each winding unit has 6 windings, which are connected in series through a hybrid connection.
  • Each winding branch runs through all the slot numbers of the corresponding phase, and at the same time, a sub-pole winding is distributed in different parity layers in adjacent slots.
  • adjacent winding elements are separated by a winding layer.
  • Each winding branch includes a U-shaped lead wire end and a welding end.
  • the pitches of the welding ends of each winding branch are equal, which facilitates automatic wire insertion.
  • the lead-out ends of each winding branch are arranged in the outermost winding layer and distributed in adjacent slots, which is convenient for connection and simplifies the connection process.
  • the star point line ends of each winding branch are arranged on the outermost winding layer and distributed in adjacent slots, which is convenient for connection and simplifies the connection process.
  • the lead-out ends of the two winding branches can be arranged on the first winding layer of the first and second slots respectively (as shown in Figure 3, U1 and U2 are branch lead-out lines identification), which greatly simplifies the winding
  • the structural layout of the end special-shaped wire reduces the size of the space occupied by the end of the winding structure.
  • FIG. 4 a schematic diagram of the connection of the winding structure of this embodiment, taking a U-phase stacked winding as an example (the V and W phases are similar to the U phase, and will not be repeated here):
  • the U-phase 1 branch winding includes a winding branch formed by 6 unit windings in series.
  • One branch of the winding is wound from the position of U1 in Figure 1.
  • the slot number of a unit winding is: 1 ⁇ 7 ⁇ 14 ⁇ 8, the other 5 units are symmetrically distributed in series, and finally output from the X1 position to the three-phase center point.
  • An electrode for a new energy automobile includes the 72-slot 6-layer flat copper wire hybrid winding structure of the present invention.
  • the automobile motor has high power density and small size, and is easy to realize the miniaturization of the automobile.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

L'invention concerne une structure d'enroulement hybride de fil de cuivre plat à 6 couches et 72 rainures et un moteur électrique appliquant la structure d'enroulement, comprenant une structure d'enroulement hybride triphasée répartie dans au moins six couches d'enroulement. Chaque phase de la structure d'enroulement hybride est constituée de deux branches d'enroulement. Les branches d'enroulement sont constituées de multiples éléments d'enroulement répartis uniformément dans les couches d'enroulement et sont disposées en tant qu'éléments d'enroulement adjacents qui sont répartis en alternance dans une même rainure et des rainures adjacentes. Par comparaison avec l'état de la technique, la mise en oeuvre d'une insertion de fil automatisée est facilitée, la connexion est pratique, un processus de connexion de fil est simplifié, l'agencement structural de fils de forme irrégulière au niveau d'une partie d'extrémité de l'enroulement est considérablement simplifié, et l'empreinte de la partie d'extrémité de la structure d'enroulement est réduite.
PCT/CN2019/127442 2019-10-21 2019-12-23 Structure d'enroulement hybride de fil de cuivre plat à 6 couches et 72 rainures et moteur électrique appliquant la structure d'enroulement WO2021077595A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201911000279.2A CN110855045A (zh) 2019-10-21 2019-10-21 一种72槽6层扁铜线混合绕组结构以及应用该绕组结构的电机
CN201911000279.2 2019-10-21

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WO2021077595A1 true WO2021077595A1 (fr) 2021-04-29

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WO (1) WO2021077595A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111555501B (zh) * 2020-05-18 2021-05-04 株洲中车时代电气股份有限公司 一种定子组件、电机及机动车辆

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6995492B1 (en) * 2002-07-12 2006-02-07 Denso Corporation Electric rotary machine equipped with stator coil consisting of sequentially connected conductor segments
CN108347115A (zh) * 2018-03-30 2018-07-31 华域汽车电动系统有限公司 一种改进的扁铜线波绕组电枢绕组
CN109120084A (zh) * 2018-09-21 2019-01-01 华域汽车电动系统有限公司 一种电流平衡的扁铜线波绕组电枢绕组
CN109327094A (zh) * 2018-11-05 2019-02-12 浙江龙芯电驱动科技有限公司 一种72槽6层以上扁铜线叠绕组结构以及应用该绕组结构的新能源汽车
CN110855044A (zh) * 2019-10-21 2020-02-28 浙江龙芯电驱动科技有限公司 一种3对极6层扁铜线绕组结构以及应用该绕组结构的电机

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6995492B1 (en) * 2002-07-12 2006-02-07 Denso Corporation Electric rotary machine equipped with stator coil consisting of sequentially connected conductor segments
CN108347115A (zh) * 2018-03-30 2018-07-31 华域汽车电动系统有限公司 一种改进的扁铜线波绕组电枢绕组
CN109120084A (zh) * 2018-09-21 2019-01-01 华域汽车电动系统有限公司 一种电流平衡的扁铜线波绕组电枢绕组
CN109327094A (zh) * 2018-11-05 2019-02-12 浙江龙芯电驱动科技有限公司 一种72槽6层以上扁铜线叠绕组结构以及应用该绕组结构的新能源汽车
CN110855044A (zh) * 2019-10-21 2020-02-28 浙江龙芯电驱动科技有限公司 一种3对极6层扁铜线绕组结构以及应用该绕组结构的电机

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