WO2021077641A1 - 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 - Google Patents

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 Download PDF

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WO2021077641A1
WO2021077641A1 PCT/CN2020/072428 CN2020072428W WO2021077641A1 WO 2021077641 A1 WO2021077641 A1 WO 2021077641A1 CN 2020072428 W CN2020072428 W CN 2020072428W WO 2021077641 A1 WO2021077641 A1 WO 2021077641A1
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winding
winding structure
copper wire
branches
layer
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PCT/CN2020/072428
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English (en)
French (fr)
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王丽
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浙江龙芯电驱动科技有限公司
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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

Definitions

  • the invention relates to a motor winding structure and a motor using the winding structure, in particular to a 3-pair pole 6-layer flat copper wire winding structure and a motor using the winding structure.
  • the flat copper wire winding can increase the slot full rate of the motor, thereby reducing the resistance value and the thermal resistance between the winding and the iron core, thereby increasing the power density of the motor.
  • the difference between a rectangular copper wire motor and a round copper wire motor lies in the cross-sectional area and forming method of the copper wire.
  • the rectangular wire is beneficial to the improvement of the slot filling rate of the motor.
  • the slot filling rate of the round wire motor is about 40%, while the rectangular wire motor
  • the slot full rate can reach more than 60%.
  • the rectangular copper wire also has its limitations, that is, the number of serial turns of each phase winding of the motor can be less selective. This is because when the number of slots of the rectangular copper wire motor and the number of conductors per slot are determined, the number of serial turns of each phase winding can only pass Adjust the number of parallel branches. In order to satisfy the balance of each branch, the number of parallel branches is also limited by the number of slots, the number of pole pairs, and the conductors per slot.
  • the purpose of the present invention is to provide a winding structure of 3 pairs of poles and 6 layers of rectangular copper wire and a motor using the winding structure. Aiming at the shortcomings of the prior art, it is convenient to connect each winding branch by means of a common busbar.
  • a winding structure of 3 pairs of poles and 6 layers of rectangular copper wire which is characterized in that it comprises a three-phase mixed winding structure distributed in at least 6 winding layers, and each phase of the mixed winding structure is composed of multiple winding branches.
  • the winding branches are composed of a plurality of winding elements uniformly distributed in each winding layer, and adjacent winding elements are alternately distributed in the same slot or 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.
  • each winding branch is a U-shaped wire.
  • the pitches of the welding ends of the winding branches are equal.
  • each phase of the hybrid winding structure includes 6 winding branches.
  • each phase of the hybrid winding structure includes two winding branches.
  • the three-phase hybrid winding structure is distributed in 72-slot 6-pole windings.
  • the motor includes the rectangular copper wire hybrid winding structure as described in any one of the above.
  • the 3-pair-pole 6-layer rectangular copper wire winding structure and the motor using the winding structure of the present invention are easy to realize automatic wire insertion, easy to connect, simplify the connection process, and facilitate the connection of various wires by means of a common busbar.
  • the winding branch achieves the purpose of the present invention.
  • Fig. 1 is an expanded schematic diagram of the three-phase winding of the 72-slot, 3-pole, 6-layer rectangular copper wire and 6-branch winding structure of the present invention
  • FIG. 2 is a schematic diagram of the U-phase connection of the 72-slot, 3-pole, 6-layer rectangular copper wire and 6-branch winding structure of the present invention
  • Fig. 3 is a schematic diagram of the connection of the 72-slot 3-pole 6-layer rectangular copper wire 2-branch winding structure of the present invention.
  • a 72-slot 3-pole 6-layer rectangular copper wire 6-branch winding structure includes a three-phase winding structure distributed in at least six winding layers, and each phase winding structure includes a plurality of winding units It consists of 6 winding branches.
  • the 6 winding branches are evenly distributed on the circumference, and the winding units on each winding branch are distributed in a pair of poles.
  • each winding branch includes a U-shaped lead terminal and a welding terminal.
  • the pitches of the welding ends of each winding branch are equal, which facilitates automatic wire insertion.
  • the lead-out end of the U-shaped wire contains 3 types of pitches, namely 11, 12, and 14.
  • the lead ends of each winding branch are arranged on the outermost winding layer, which is convenient for connecting each winding branch by means of a common busbar.
  • the star point line end of each winding branch is arranged on the outermost winding layer, which is convenient for connecting each branch by means of a common busbar.
  • FIG. 2 a schematic diagram of the connection of the winding structure of this embodiment, taking a U-phase stacked winding 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 12 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(1) ⁇ 13(2) ⁇ 1(3) ⁇ 13(4) ⁇ 1(5) ⁇ 13(6) ⁇ 2(6) ⁇ 62(5) ) ⁇ 2(4) ⁇ 62(3) ⁇ 2(2) ⁇ 62(1) ⁇ 3(1) ⁇ 15(2) ⁇ 3(3) ⁇ 15(4) ⁇ 3(5) ⁇ 15(6 ) ⁇ 4(6) ⁇ 64(5) ⁇ 4(4) ⁇ 64(3) ⁇ 4(2) ⁇ 64(1).
  • 13(2) indicates the position of the 2-layer conductor in the 13 slot.
  • This kind of branch connection form can form the balance of each branch.
  • the distribution of the starting and ending slot numbers corresponding to the remaining 5 similar tributaries is as follows:
  • the last 6 branches are connected through a common bus bar to form a completed three-phase winding.
  • FIG. 3 it is a schematic diagram of the connection of the winding structure of this embodiment, taking the U-phase stacked winding as an example (the V and W phases are similar to the U phase, and will not be repeated here). It is based on the structure of the embodiment 1. Transformation, that is, X1 is connected with U2, X2 is connected with U3 to form a branch; X4 is connected with U5, and X5 is connected with U6 to form another branch.
  • the winding of the first branch of the U-phase is wound in from the U1 position in Fig. 3, and is output from the X1 position to the three-phase center point.
  • the U-phase second branch winding is wound in from the position U2 in Fig. 3, and output from the position X2 to the three-phase center point.
  • a motor for a new energy vehicle includes the 3-pair-pole 6-layer rectangular copper wire winding structure of the present invention.
  • the 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

本发明的目的在于公开一种3对极6层扁铜线绕组结构以及应用该绕组结构的电机，包括分布在至少6层绕组层中的三相混合绕组结构，每相所述混合绕组结构由多条绕组支路构成，所述绕组支路由均匀分布在各所述绕组层的多个绕组元件构成，并形成相邻绕组元件交替地分布在同一个槽或相邻槽中；与现有技术相比，便于实现自动化插线，便于连接，简化连接线工艺，方便借助公共母排连接各条绕组支路，实现本发明的目的。

Description

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 技术领域
本发明涉及一种电机绕组结构以及应用该绕组结构的电机，特别涉及一种3对极6层扁铜线绕组结构以及应用该绕组结构的电机。
背景技术
从长远来看，小型化、高速化将是新能源汽车电机的主要发展趋势，而小型化必然要求电机功率密度有大幅度提升。扁铜线绕组可以提高电机的槽满率，进而降低电阻值和降低绕组与铁芯间的热阻，从而提升电机的功率密度。
扁铜线电机与圆铜线电机的区别在于铜线的截面积和成型方式，扁线有利于电机槽满率的提升，一般圆线电机的槽满率为40％左右，而扁线电机的槽满率能达到60％以上。同时，扁铜线也有其局限性，即电机每相绕组串联匝数可选择性少，这是因为当扁铜线电机槽数和每槽导体数确定后，每相绕组串联匝数只能通过并联支路数进行调整。为了满足每条支路的平衡性，并联支路数也会受槽数、极对数和每槽导体限制。
现有产品大多采用波绕组形式，绕组的连接形式有一定的局限性，无法简化引出线方式。另外，采用波绕组，3对极6层扁线不能形成完全平衡的并联支路数，例如6支路数，这样限制了该类型的绕组形式的使用。
因此，特别需要一种3对极6层扁铜线绕组结构以及应用该绕组结构的电机，以解决上述现有存在的问题。
发明概述
技术问题
问题的解决方案
技术解决方案
本发明的目的在于提供一种3对极6层扁铜线绕组结构以及应用该绕组结构的电 机，针对现有技术的不足，方便借助公共母排连接各条绕组支路。
本发明所解决的技术问题可以采用以下技术方案来实现：
一种3对极6层扁铜线绕组结构，其特征在于，包括分布在至少6层绕组层中的三相混合绕组结构，每相所述混合绕组结构由多条绕组支路构成，所述绕组支路由均匀分布在各所述绕组层的多个绕组元件构成，并形成相邻绕组元件交替地分布在同一个槽或相邻槽中。
在本发明的一个实施例中，各所述绕组支路的引出线端均位于最内层的绕组层。
在本发明的一个实施例中，各所述绕组支路的引出线端均位于最外层的绕组层。
在本发明的一个实施例中，所述绕组支路的引出线端位于最内层的绕组层或者最外层的绕组层。
在本发明的一个实施例中，各所述绕组支路的引出线端为U型线。
在本发明的一个实施例中，各所述绕组支路的焊接端的节距相等。
在本发明的一个实施例中，每相所述混合绕组结构包括6条绕组支路。
在本发明的一个实施例中，每相所述混合绕组结构包括2条绕组支路。
在本发明的一个实施例中，所述三相混合绕组结构分布在72槽6极绕组中。
在本发明的一个实施例中，所述电机包括如上述任一项所述的扁铜线混合绕组结构。
本发明的3对极6层扁铜线绕组结构以及应用该绕组结构的电机，与现有技术相比，便于实现自动化插线，便于连接，简化连接线工艺，方便借助公共母排连接各条绕组支路，实现本发明的目的。
本发明的特点可参阅本案图式及以下较好实施方式的详细说明而获得清楚地了解。
发明的有益效果
对附图的简要说明
附图说明
图1为本发明的72槽3对极6层扁铜线6支路绕组结构的三相绕组的展开示意图；
图2为本发明的72槽3对极6层扁铜线6支路绕组结构U相连接的示意图；
图3为本发明的72槽3对极6层扁铜线2支路绕组结构的连接示意图。
发明实施例
本发明的实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体图示，进一步阐述本发明。
实施例1
如图1所示，一种72槽3对极6层扁铜线6支路绕组结构，它包括分布在至少六层绕组层中的三相绕组结构，每相绕组结构包括由多个绕组单元组成的6条绕组支路。6条绕组支路在圆周上均匀分布，且每条绕组支路上的绕组单元分布在1对极中。
本实施例中，每条绕组支路包括U型的引出线端和焊接端。各绕组支路的焊接端的节距相等，便于实现自动化插线。U型线的引出线端包含3种节距类型，分别为11、12和14。各绕组支路的引出线端布置在最外层的绕组层，方便借助公共母排连接各条绕组支路。各绕组支路的星点线端布置在最外层的绕组层，方便借助公共母排连接各条支路。
如图2所示，为本实施例的绕组结构的连接示意图，以U相叠绕组为例(V、W相与U相类似，在此不再赘述)：
U相1支路绕组包括由12个单元绕组串联形成的绕组支路，该绕组1条支路从图1中U1位置处绕进去，最后从X1位置处输出至三相中心点。1条支路串联连接经过的槽号为：1(1)→13(2)→1(3)→13(4)→1(5)→13(6)→2(6)→62(5)→2(4)→62(3)→2(2)→62(1)→3(1)→15(2)→3(3)→15(4)→3(5)→15(6)→4(6)→64(5)→4(4)→64(3)→4(2)→64(1)。
在此，13(2)表示13槽中的2层导体位置。该种支路连接形式，可以形成每条支路的平衡。类似的剩余5条支流对应的起始槽和结束槽号分布如下：
U2对应52(1)，X2对应61(1)；U3对应49(1)，X3对应40(1)；U4对应4(1)，X4对应13(1)；U5对应25(1)，X5对应16(1)；U6对应28(1)，X6 对应37(1)。最后6条支路通过公共母排连接，形成完成的三相绕组。
实施例2
如图3所示，为本实施例的绕组结构的连接示意图，以U相叠绕组为例(V、W相与U相类似，在此不再赘述)，它是在实施例1的结构上进行变形，即X1与U2连接，X2与U3连接，形成一条支路；X4与U5连接，X5与U6连接，形成另外一条支路。
U相第1支路绕组从图3中U1位置处绕进去，从X1位置处输出至三相中心点。U相第2支路绕组从图3中的U2为位置处绕进去，从X2位置出处输出至三相中心点。
一种新能源汽车的电机，包括上述本发明的3对极6层扁铜线绕组结构，该汽车电机功率密度大、体积小，易于实现汽车的小型化。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内，本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (10)

  1. 一种3对极6层扁铜线绕组结构，其特征在于，包括分布在至少6层绕组层中的三相混合绕组结构，每相所述混合绕组结构由多条绕组支路构成，所述绕组支路由均匀分布在各所述绕组层的多个绕组元件构成，并形成相邻绕组元件交替地分布在同一个槽或相邻槽中。
  2. 如权利要求1所述的3对极6层扁铜线绕组结构，其特征在于，各所述绕组支路的引出线端均位于最内层的绕组层。
  3. 如权利要求1所述的3对极6层扁铜线绕组结构，其特征在于，各所述绕组支路的引出线端均位于最外层的绕组层。
  4. 如权利要求1所述的3对极6层扁铜线绕组结构，其特征在于，所述绕组支路的引出线端位于最内层的绕组层或者最外层的绕组层。
  5. 如权利要求1所述的3对极6层扁铜线绕组结构，其特征在于，各所述绕组支路的引出线端为U型线。
  6. 如权利要求1所述的3对极6层扁铜线绕组结构，其特征在于，各所述绕组支路的焊接端的节距相等。
  7. 如权利要求1所述的3对极6层扁铜线绕组结构，其特征在于，每相所述混合绕组结构包括6条绕组支路。
  8. 如权利要求1所述的3对极6层扁铜线绕组结构，其特征在于，每相所述混合绕组结构包括2条绕组支路。
  9. 如权利要求1所述的3对极6层扁铜线绕组结构，其特征在于，所述三相混合绕组结构分布在72槽6极绕组中。
  10. 一种电机，其特征在于，所述电机包括如上述任意一项所述3对极6层扁铜线绕组结构。
PCT/CN2020/072428 2019-10-21 2020-01-16 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 WO2021077641A1 (zh)

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CN110855045A (zh) * 2019-10-21 2020-02-28 浙江龙芯电驱动科技有限公司 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

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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

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JP2003189572A (ja) * 2001-12-11 2003-07-04 Aisan Ind Co Ltd 集中巻型ブラシ付ｄｃモータ
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
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