WO2021120361A1 - 一种 72 槽 8 极扁铜线绕组结构以及应用该绕组结构的电机 - Google Patents

一种 72 槽 8 极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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WO2021120361A1
WO2021120361A1 PCT/CN2020/072424 CN2020072424W WO2021120361A1 WO 2021120361 A1 WO2021120361 A1 WO 2021120361A1 CN 2020072424 W CN2020072424 W CN 2020072424W WO 2021120361 A1 WO2021120361 A1 WO 2021120361A1
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winding
slot
copper wire
winding structure
branches
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PCT/CN2020/072424
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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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Publication of WO2021120361A1 publication Critical patent/WO2021120361A1/zh

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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

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  • the invention relates to a rectangular copper wire winding structure and a motor using the winding structure, in particular to a 72-slot 8-pole rectangular copper wire winding structure and a motor using the winding structure.
  • the rectangular 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 flat copper wire motor and a round copper wire motor lies in the cross-sectional area and forming method of the copper wire.
  • the flat copper wire is beneficial to the improvement of the slot filling rate of the motor.
  • the slot filling rate of the round copper wire motor is about 40%.
  • the slot full rate of the line motor 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 72-slot 8-pole flat copper wire winding structure and a motor using the winding structure.
  • it is convenient to connect various winding branches by means of a common busbar.
  • the present invention provides a 72-slot 8-pole flat copper wire winding structure, which includes a three-phase winding structure distributed in at least 6 winding layers, and each phase of the winding structure is composed of 2 winding branches, so The winding branches are composed of a plurality of winding elements distributed asymmetrically in each winding layer, and the adjacent winding elements are alternately distributed in the same slot or adjacent slots.
  • the lead-out end of the winding branch is arranged in the innermost winding layer.
  • the lead-out terminal of the winding branch is arranged on the outermost winding layer.
  • the lead-out terminal of the winding branch is arranged on the innermost winding layer or the outermost winding layer.
  • the lead-out end of the winding branch is a U-shaped wire.
  • the pitches of the welding ends of the winding branches are equal.
  • the present invention provides a motor including the 72-slot 8-pole rectangular copper wire winding structure described above.
  • the 72-slot 8-pole flat copper wire winding structure of the present invention and the motor using the winding structure are convenient to realize automatic wire insertion, convenient connection, simplify the connection process, and facilitate the connection of various windings by means of a common busbar
  • the branch achieves the purpose of the present invention.
  • FIG. 1 is an expanded schematic diagram of the three-phase winding of the 72-slot 8-pole 6-layer rectangular copper wire 2-branch winding structure of the present invention
  • FIG. 2 is a schematic diagram of the U-phase connection of the 72-slot 8-pole 6-layer rectangular copper wire 2 branch winding structure of the present invention.
  • FIG. 3 is a schematic diagram of the 72-slot 8-pole 6-layer rectangular copper wire armature of the present invention.
  • the 72-slot 8-pole rectangular copper wire winding structure of the present invention includes a three-phase winding structure distributed in at least six winding layers, and each phase winding structure includes a plurality of winding units. 2 winding branches, 2 winding branches are evenly distributed on the circumference, and the winding units on each winding branch are non-uniformly distributed in each pole.
  • each winding branch includes a U-shaped lead-out wire end and a welding end, and the welding ends of each winding branch have the same pitch, which facilitates automatic wire insertion.
  • 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 with a common busbar.
  • the three-phase windings can either form a delta connection or a star connection.
  • FIG. 2 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):
  • the U-phase 1 branch winding includes a winding branch formed by a plurality of unit windings in series.
  • One branch of the winding winds in from the position U1 in Fig. 1, and finally outputs from the position X1 to the three-phase center point or end point.
  • the slot numbers of a branch connected in series are: 1(1) ⁇ 10(2) ⁇ 1(3) ⁇ 10(4) ⁇ 1(5) ⁇ 10(6) ⁇ 19(6) ⁇ 10(5) ) ⁇ 19(4) ⁇ 10(3) ⁇ 19(2) ⁇ 10(1) ⁇ 3(1) ⁇ 12(2) ⁇ 3(3) ⁇ 12(4) ⁇ 3(5) ⁇ 12(6 ) ⁇ 21(6) ⁇ 12(5) ⁇ 21(4) ⁇ 12(3) ⁇ 21(2) ⁇ 12(1) ⁇ 20(1) ⁇ 29(2) ⁇ 20(3) ⁇ 29(4 ) ⁇ 20(5) ⁇ 29(6) ⁇ 38(6) ⁇ 29(5) ⁇ 38(4) ⁇ 29(3) ⁇ 38(2) ⁇ 29(1) ⁇ 37(1) ⁇ 46(2 ) ⁇ 37(3) ⁇ 46(4) ⁇ 37(5) ⁇ 46(6) ⁇ 55(6) ⁇ 46(5) ⁇ 55(4) ⁇ 46(3) ⁇ 55(2) ⁇ 46(1 ) ⁇ 39(1) ⁇ 48(2) ⁇ 39(3) ⁇ 48(4) ⁇ 39(5) ⁇ 48(6) ⁇ 57(6) ⁇ 48(5) ⁇ 57(4) ⁇ 48(3 ) ⁇ 57(2) ⁇ 48(1) ⁇ 56(1) ⁇ 65(2) ⁇ 56(3) ⁇ 65(4) ⁇ 56(5) ⁇ 65(6) ⁇ 2(6) ⁇ 65(5 ) ⁇ 2(4) ⁇ 65(3) ⁇ 2(2) ⁇ 65(1).
  • 10(2) indicates the position of the second layer of copper conductor in the 10-slot.
  • This branch connection form can form the electrical balance of each branch.
  • the start slot and end slot numbers corresponding to another branch are: U2 corresponds to 2(1), and X2 corresponds to 66(1).
  • the last two branches can be connected through a common busbar to form a complete three-phase star connection or delta connection winding.
  • a motor includes the 72-slot 8-pole rectangular copper wire winding structure of the present invention.
  • a preferred armature structure is shown in Figure 3 (a delta connection). The motor with this structure has high power density and small size, and it is easy to realize the miniaturization of automobiles.

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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72槽8极扁铜线绕组结构以及应用该绕组结构的电机，它包括分布在至少6层绕组层中的三相绕组结构，每相所述绕组结构由2条绕组支路构成，所述绕组支路由不对称分布在各所述绕组层的多个绕组元件构成，相邻所述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2条绕组支路，两条支路可以通过三角型或星型组成完整的三相绕组连接形式，实现本发明的目的。

Description

一种72槽8极扁铜线绕组结构以及应用该绕组结构的电机 技术领域
本发明涉及一种扁铜线绕组结构以及应用该绕组结构的电机，特别涉及一种72槽8极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，扁铜线有利于电机槽满率的提升，一般圆铜线电机的槽满率为40％左右，而扁铜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，为匹配电机的电压值和考虑支流电流的平衡性，电机的绕组的并联支路数被限定为2时，绕组端部连接将变得复杂。
因此，特别需要一种72槽8极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72槽8极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：
第一方面，本发明提供一种72槽8极扁铜线绕组结构，它包括分布在至少6层绕组层中的三相绕组结构，每相所述绕组结构由2条绕组支路构成，所述绕组支路由不对称分布在各所述绕组层的多个绕组元件构成，相邻所述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，所述绕组支路的引出线端设置在最内层的绕组层。
在本发明的一个实施例中，所述绕组支路的引出线端设置在最外层的绕组层。
在本发明的一个实施例中，所述绕组支路的引出线端设置在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，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，所述绕组支路的焊接端的节距相等。
第二方面，本发明提供一种电机，所述电机包括上述所述的72槽8极扁铜线绕组结构。
本发明的72槽8极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8极6层扁铜线2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8极6层扁铜线2支路绕组结构U相连接的示意图。
图3为本发明的72槽8极6层扁铜线电枢的示意图。
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
如图1至图3所示，本发明的72槽8极扁铜线绕组结构，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2条绕组支路，2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非均匀分布在每极中。
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。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。三相绕组即可以形成三角形连接，也可以行成星形连接。
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支路绕组包括由多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或端点。1条支路串联连接经过的槽号为：1(1)→10(2)→1(3)→10(4)→1(5)→10(6)→19(6)→10(5)→19(4)→10(3)→19(2)→10(1)→3(1)→12(2)→3(3)→12(4)→3(5)→12(6)→21(6)→12(5)→21(4)→12(3)→21(2)→12(1)→20(1)→29(2)→20(3)→29(4)→20(5)→29(6)→38(6)→29(5)→38(4)→29(3)→38(2)→29(1)→37(1)→46(2)→37(3)→46(4)→37(5)→46(6)→55(6)→46(5)→55(4)→46(3)→55(2)→46(1)→39(1)→48(2)→39(3)→48(4)→39(5)→48(6)→57(6)→48(5)→57(4)→48(3)→57(2)→48(1)→56(1)→65(2)→56(3)→65(4)→56(5)→65(6)→2(6)→65(5)→2(4)→65(3)→2(2)→65(1)。
在此，10(2)表示10槽中的第2层铜导体位置。该种支路连接形式，可以形成每条支路的电气平衡。类似的另外1条支路对应的起始槽和结束槽号为：U2对应2(1)，X2对应66(1)。最后2条支路可通过公共母排连接，形成完整的三相星形连接或三角形连接绕组。
一种电机，包括上述本发明的72槽8极扁铜线绕组结构，优选的其中一种电枢结构见图3(一种三角形连接)。使用这种结构的电机，它的功率密度大、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 (7)

  1. 一种72槽8极扁铜线绕组结构，其特征在于，它包括分布在至少6层绕组层中的三相绕组结构，每相所述绕组结构由2条绕组支路构成，所述绕组支路由不对称分布在各所述绕组层的多个绕组元件构成，相邻所述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72槽8极扁铜线绕组结构，其特征在于，所述绕组支路的引出线端设置在最内层的绕组层。
  3. 如权利要求1所述的72槽8极扁铜线绕组结构，其特征在于，所述绕组支路的引出线端设置在最外层的绕组层。
  4. 如权利要求1所述的72槽8极扁铜线绕组结构，其特征在于，所述绕组支路的引出线端设置在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72槽8极扁铜线绕组结构，其特征在于，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72槽8极扁铜线绕组结构，其特征在于，所述绕组支路的焊接端的节距相等。
  7. 一种电机，其特征在于，所述电机包括所述的72槽8极扁铜线绕组结构。
PCT/CN2020/072424 2019-12-18 2020-01-16 一种 72 槽 8 极扁铜线绕组结构以及应用该绕组结构的电机 WO2021120361A1 (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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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