WO2024016765A1 - 六极五十四槽扁铜线电机两支路平衡绕组结构 - Google Patents

六极五十四槽扁铜线电机两支路平衡绕组结构 Download PDF

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Publication number
WO2024016765A1
WO2024016765A1 PCT/CN2023/090385 CN2023090385W WO2024016765A1 WO 2024016765 A1 WO2024016765 A1 WO 2024016765A1 CN 2023090385 W CN2023090385 W CN 2023090385W WO 2024016765 A1 WO2024016765 A1 WO 2024016765A1
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Prior art keywords
flat copper
phase
winding
copper wire
wire
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PCT/CN2023/090385
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English (en)
French (fr)
Inventor
姜华
殷浩
管博
李西京
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格至控智能动力科技（上海）有限公司
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Priority to EP23841838.8A priority Critical patent/EP4380013A1/en
Publication of WO2024016765A1 publication Critical patent/WO2024016765A1/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
    • H02K3/28—Layout of windings or of connections between windings
    • 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
    • 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
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/48—Fastening of windings on the stator or rotor structure in slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto

Definitions

  • This application relates to the field of components of motor windings arranged in slots, specifically a two-circuit balanced winding structure of a six-pole, fifty-four-slot flat copper wire motor.
  • New energy vehicle flat copper wire drive motors commonly have problems such as unbalanced winding AC branch currents, many special-shaped wires, and poor mass production processability.
  • the parallel branch currents of each phase winding will gradually be distributed unevenly, and circulating currents will exist between the branches, eventually causing branching of the inner and outer armature windings.
  • the uneven heating of the circuit will damage the insulation system of the motor.
  • the bridge wires, star point connection wires, power lead wires and other special-shaped wires connected to the ends of the flat copper wires have complex structures, which cannot meet the automated mass production process of flat wire windings. Require.
  • this application discloses a two-circuit balanced winding structure of a six-pole, fifty-four-slot flat copper wire motor.
  • a two-circuit balanced winding structure of a six-pole, fifty-four-slot flat copper wire motor including three-phase flat copper wire windings distributed symmetrically in the circumferential direction of the core slots, wherein the three-phase flat copper wire windings include distributed The straight part of the wire in the iron core slot, the welding end distributed on one side of the iron core end, and the power lead-out wire end distributed on the other side of the iron core.
  • the spans of the welding ends are all equal, and the lead wire heights of the welding ends are all equal; the power lead wire ends are composed of three span U-pin wires and special-shaped wires.
  • the special-shaped wires include U-phase power wires, V-phase power wires, W-phase power wires, inner star point wires and outer star point wires, and there are no other protruding special-shaped wires and bridge wires.
  • the special-shaped wires include U-phase power wire (5), V-phase power wire (6), W-phase power wire (7), and there are no other protruding special-shaped wires and bridge wires.
  • the two-branch balanced winding structure of the six-pole fifty-four-slot flat copper wire motor wherein the three-phase flat copper wire winding is a multi-layer winding, and each phase winding is composed of two branches connected in parallel, and each layer The winding skew directions are consistent, and each branch is composed of each layer of flat copper wire conductors in the core slot;
  • the number of layers N of the three-phase flat copper wire winding is an even number not less than four, which is suitable for multi-layer flat copper wire windings per slot;
  • the three-phase flat copper wire winding is a distributed winding, and the main body is in the form of a wave winding.
  • the six-pole fifty-four slot flat copper wire motor has a two-circuit balanced winding structure, in which the U-phase power line, V-phase power line and W-phase power line of the three-phase flat copper wire winding adopt a star shape (Y connection) connection or triangle connection (i.e. two circuits connected in parallel triangle connection).
  • the three-phase flat copper wire winding adopts a short pitch with a pitch Y of 8, a full pitch with a pitch Y of 9, or a long pitch with a pitch Y of 10.
  • the two-circuit balanced winding structure of the six-pole fifty-four-slot flat copper wire motor among which, for the star connection, there are two U-phase power wires, two V-phase power wires, two W-phase power wires, and three inner star connections.
  • the point wire and the three outer star point wires are distributed on the outermost and innermost windings at the end of the flat copper wire power outlet; for corner connection, four U-phase power wires, four V-phase power wires, and four W-phase
  • the power lines are distributed on the outermost and innermost windings at the end of the flat copper wire power outlet.
  • the connection methods of U-phase power cord, V-phase power cord, W-phase power cord, inner star point wire and outer star point wire are suitable for connecting single formed special-shaped wires, and are also suitable for internally connected and plastic-sealed busbars. connect.
  • the winding structure consists of three parts: a straight part distributed in the iron core slot, a welding end distributed on one side of the iron core end, and a power lead terminal distributed on the other side of the iron core.
  • the spans of the welding ends of the flat copper wire motor windings are all equal, and the lead-out heights of the welding ends are all equal.
  • the power lead-out wire end consists of three span U-pin wires and six special-shaped wires that constitute the power supply lead-out wire and six star points. There are no other protruding special-shaped wires and bridge wires.
  • the power lead-out terminal consists of three span U-pin wires and twelve power lead-out wires. There are no other protruding special-shaped wires and bridge wires. There are only three types of spans for all U-Pin lines, and the skew direction of each layer of conductors is the same. In addition, the number and type of special-shaped lines remain unchanged.
  • star connection it consists of six power lead wires and six star point wires, which are distributed at the ends of the outermost and innermost windings (three star point wires of the same type on the outer layer, three power supply lead wires of the same type, and three star point wires on the inner layer) Star point wires of the same type, three power supply lead wires of the same type.
  • For corner connection it consists of twelve power supply lead wires, distributed at the ends of the outermost and innermost windings (the outermost six power supply lead wires of the same type; There are six power lead-out wires of the same type in the innermost layer, and there are no other protruding cross-bridge wires.
  • the current of the three-phase windings is balanced, and the branch current of each phase flat copper wire winding can be balanced, which solves the adverse effects of increased AC losses in the windings due to unbalanced branch currents, reduces the circulating current between branches, and reduces Reduces winding copper loss, thereby improving motor efficiency;
  • winding welding ends have equal spans and heights, and the circumferential distribution is consistent, which facilitates mass production processes such as automatic expansion, twisting, cutting, welding and coating, reduces the complexity of automation equipment, and facilitates mass production automation;
  • the yoke space of the armature core or the inner diameter space layout of the armature winding end can be used to shorten the axial end height of the motor winding.
  • Figure 1 is a front view of the iron core and star-connected flat copper wire winding structure in this application;
  • Figure 2 is a diagram of the welding end of the iron core and star-connected flat copper wire winding structure in this application;
  • Figure 3 is a diagram of the power outlet terminal of the iron core and star-connected flat copper wire winding structure in this application;
  • FIG. 4 is an expanded connection diagram of the star-connected U-phase winding principle in this application.
  • Figure 5 is an expanded connection diagram of the three-phase winding principle of U, V, W star connection in this application;
  • Figure 6 is a connection diagram of the lead-out wire at the star terminal of the U, V, and W three-phase windings in this application;
  • Figure 7 is a connection diagram of the lead-out wires at the corners of the U, V, and W three-phase windings in this application.
  • the winding expansion diagram shows a six-layer flat copper wire winding, that is, there are 6 flat copper wires in each slot number;
  • the U-phase winding consists of forward branch 1 (U1-U6) and reverse branch 2 (X6-X1)
  • V-phase winding consists of forward branch 1 (V1-V6) It consists of forward branch 1 (W1-W6) and reverse branch 2 (Z6-Z1).
  • U-phase reverse branch 2 (X6-X1) is the same as that of U-phase branch forward branch 1 (U1-U6), except that the wiring method is along the circumference opposite to the forward direction.
  • the first end X6 of branch 2 enters from the sixth layer L6 of slot 3 of the winding, and finally leads out from the first layer of slot 12 to the tail end X1 of reverse branch 2.
  • the detailed connection method is shown in Figure 4.
  • the power supply lead wire consists of U phase (composed of U1, X6), V phase (composed of V1, Y6), W phase (composed of W1, Z6), and the three-phase layout
  • U1, V1, and W1 are all distributed on the first layer of the winding
  • X6, Y6, and Z6 are all distributed on the sixth layer of the winding.
  • the two star points X1-Y1-Z1 and U6-V6-W6 are distributed on the innermost and outermost layers of the winding at the end of the power supply lead.
  • the winding connection structure is shown in Figure 5 and Figure 7. The specific structure is:
  • the winding expansion diagram shows a six-layer flat copper wire winding, that is, there are 6 flat copper wires in each slot number;
  • the linear part and welding end of the winding are exactly the same as in Figure 5. The difference is that the three-phase winding is not star-connected, but corner-connected.
  • the connection method of the power lead wire is shown in Figure 7.
  • the U-phase winding is composed of (U1- X6-Y1-V6)
  • the V-phase winding is composed of (V1-Y6-Z1-W6)
  • the W-phase winding is composed of (W1-Z6-X1-U6).

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

Abstract

本申请涉及电机在槽中排列的绕组的零部件领域，具体为一种六极五十四槽扁铜线电机两支路平衡绕组结构。一种六极五十四槽扁铜线电机两支路平衡绕组结构，包括三相扁铜线绕组，其中，所述三相扁铜线绕组包括分布在铁芯槽中的导线直线部分（4）、分布在铁芯（2）端部一侧的焊接端（3）和分布在铁芯（2）另一侧的电源引出线端（1），焊接端（3）的跨距均相等，且焊接端（3）引出线高度均相等。

Description

六极五十四槽扁铜线电机两支路平衡绕组结构
本申请要求于2022年7月20日申请的、申请号为202210851120.7的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电机在槽中排列的绕组的零部件领域，具体为一种六极五十四槽扁铜线电机两支路平衡绕组结构。
 背景技术
现有新能源汽车驱动电机领域，驱动电机向扁铜线发展的趋势日趋明显。新能源汽车扁铜线驱动电机普遍存在绕组交流支路电流不平衡、异型线多、量产工艺性不好的问题。随着电源频率逐渐升高时，因电机绕组的集肤效应、邻近效应逐渐突出，每相绕组的并联支路电流会逐渐分配不均，支路间存在环流，最终导致内外层电枢绕组支路发热不均匀，进而损害电机的绝缘体系。扁铜线电机因为绕组有多条并联支路，导致扁铜线端部连接的过桥线、星点连接线、电源引出线等异型线结构复杂，不能满足自动化的扁线绕组自动化量产工艺要求。
 技术问题
为了克服现有技术的缺陷，提供一种结构紧凑、电流平衡的电机绕组结构，本申请公开了一种六极五十四槽扁铜线电机两支路平衡绕组结构。
 技术解决方案
本申请通过如下技术方案达到发明目的：
一种六极五十四槽扁铜线电机两支路平衡绕组结构，包括以铁芯槽圆周方向对称分相分布的三相扁铜线绕组，其中，所述三相扁铜线绕组包括分布在铁芯槽中的导线直线部分、分布在铁芯端部一侧的焊接端和分布在铁芯另一侧的电源引出线端。
焊接端的跨距均相等，且焊接端引出线高度均相等；电源引出线端由三种跨距U-pin线和异型线组成。对于星接（图6），所述异型线包括U相电源线、V相电源线、W相电源线、内侧星点线和外侧星点线，没有其它凸出异型线和过桥线。对于角接（图7），所述异型线包括U相电源线(5)、V相电源线(6)、W相电源线(7)，没有其它凸出异型线和过桥线。
所述的六极五十四槽扁铜线电机两支路平衡绕组结构，其中，所述三相扁铜线绕组为多层绕组，每相绕组均由两条支路并联组成，且每层绕组扭斜方向均一致，每条支路均由铁芯槽中的每一层扁铜线导体组成；
所述的三相扁铜线绕组的层数N为不小于四的偶数，适用于每槽多层扁铜线绕组；
所述的三相扁铜线绕组为分布绕组，主体为波绕组形式。
所述的六极五十四槽扁铜线电机两支路平衡绕组结构，其中，所述三相扁铜线绕组的U相电源线、V相电源线和W相电源线采用星型（Y接）接法或三角形接法（即两支路并联三角形接法）。
所述的三相扁铜线绕组采用节距Y为8的短距、节距Y为9的整距或节距Y为10的长距。
所述的六极五十四槽扁铜线电机两支路平衡绕组结构，其中，对于星接，两根U相电源线、两根V相电源线、两根W相电源线、三根内侧星点线和三根外侧星点线都分布在扁铜线电源引出线端的最外层和最内层绕组上；对于角接，四根U相电源线、四根V相电源线、四根W相电源线都分布在扁铜线电源引出线端的最外层和最内层绕组上。U相电源线、V相电源线、W相电源线、内侧星点线和外侧星点线的连接方式适用于单根的成型好的异型线连接，也适用于内部连接好且塑封的母排连接。
本申请克服了现有技术的缺陷，提出一种六极五十四槽扁铜线电机两支路平衡绕组结构。该绕组结构由分布在铁芯槽中的直线部分，分布在铁芯端部一侧的焊接端和分布在铁芯另一侧的电源引出线端三部分组成。其中：扁铜线电机绕组焊接端的跨距均相等，且焊接端引出线高度均相等。对于星接，电源引出线端由三种跨距U-pin线和六根组成电源引出线、六根星点的异型线组成，没有其它凸出异型线和过桥线。对于角接，电源引出线端由三种跨距U-pin线和十二根电源引出线组成，没有其它凸出异型线和过桥线。所有U-Pin线的跨距只有三种，且每层导体的扭斜方向一样。另外异型线数量和类型均不变。对于星接，由六根电源引出线、六根星点线组成，分别是分布在最外层和最内层绕组端部（外层三根同类型星点线，三根同类型电源引出线，内层三根同类型星点线，三根同类型电源引出线。对于角接，由十二根电源引出线组成，分别分布在最外层和最内层绕组端部（最外层六根同类型电源引出线；最内层六根同类型电源引出线，没有其它凸出跨桥线。
 有益效果
1、三相绕组电流平衡，且能够让每相扁铜线绕组的支路电流的平衡，解决了因为支路电流不平衡导致绕组交流损耗增加产生的不良影响，减少了支路间环流，降低了绕组铜耗，进而提高了电机的效率；
2、因为解决了各支路电流不平衡的问题，改善了扁铜线绕组内、外层温度分布的不均匀性，进而提高了整个定子绝缘系统的可靠性；
3、绕组焊接端等跨距，等高度，而且圆周分布规律一致，便于自动化扩口、扭头、切头、焊接和涂敷等量产工艺，降低自动化设备复杂度，便于量产自动化；
4、绕组电源引出线端异型线规格少。对于星接，除6根电源引出线和6根星点线外，无其它凸出跨桥线；对于角接，除12根电源引出线外，无其它凸出跨桥线，所需量产模具少，便于设备实现自动化插线；
5、因电源引出线和星点线均位于最外层和最内层，可以利用电枢铁芯轭部空间，或电枢绕组端部内径空间布局，缩短电机绕组轴向端部高度。
 附图说明
图1是本申请中铁芯和星型连接扁铜线绕组结构主视图；
图2是本申请中铁芯和星型连接扁铜线绕组结构焊接端图；
图3是本申请中铁芯和星型连接扁铜线绕组结构电源引出线端图；
图4是本申请中星型连接U相绕组原理展开连线图；
图5是本申请中星型连接U、V、W三相绕组原理展开连线图；
图6是本申请中U、V、W三相绕组星接端部引出线连线图；
图7是本申请中U、V、W三相绕组角接端部引出线连线图。
 本发明的实施方式
以下通过具体实施例进一步说明本申请。
实施例1
以54槽6层扁铜线、短距（Y=8）、星型连接、并联支路数（a=2）举例说明绕组连线结构，如图1～图6所示，具体结构是：
所述的绕组直线部分：按短距（Y=8），三相扁铜线绕组直线部分平均分成三相对称绕组U相、V相和W相，如图5所示。
所述绕组展开图为六层扁铜线绕组，即每个槽号中有6根扁铜线；
所述绕组为星型连接，并联支路数a=2，每相绕组由两个支路并联组成。
如图5和图6所示，U相绕组由正向支路1（U1-U6）和反向支路2（X6-X1）组成，V相绕组由正向支路1（V1-V6）和反向支路2（Y6-Y1）组成，W相绕组由正向支路1（W1-W6）和反向支路2（Z6-Z1）组成。
如图4所示，U相的正向支路1（U1-U6）的首端U1从绕组3槽第一层L1进入，以跨距（Y1=8）进入到11槽的第二层L2，然后以跨距（Y2=10）进入到21槽第一层L1，然后以同样的规律依次进入到29槽第二层L2，39槽第一层L1，47槽第二层L2，然后以跨槽数（Y2=9）进入到2槽第一层L1，然后又以同样的规律进入到10槽第二层L2，20槽第一层L1，28槽第二层L2，38槽第一层L1，46槽第二层L2，1槽第一层L1，9槽第二层L2，19槽第一层L1，27槽第二层L2，37槽第一层L1，45号槽第二层L2，然后以跨距（Y2=12）进入到3槽第三层L3，然后以和第一、二层的规律进入到11槽第四层L4，到21槽第三层L3,29槽第四层L4，39槽第三层L3，47槽第四层L4，2槽第三层L3，10槽第四层L4，20槽第三层L3，28槽第四层L4，38槽第三层L3，46槽第四层L4，1槽第三层L3，9槽第四层L4，19槽第三层L3，27槽第四层L4，37槽第三层L3，45槽第四层L4，3槽第五层L5，然后以和第三、四层的规律进入到11槽第六层L6，到21槽第五层L5,29槽第六层L6，39槽第五层L5，47槽第六层L6，2槽第五层L5，10槽第六层L6，20槽第五层L5，28槽第六层L6，38槽第五层L5，46槽第六层L6，1槽第五层L5，9槽第六层L6，19槽第五层L5，27槽第六层L6，37槽第五层L5，45槽第六层L6，然后引出到正向支路1的尾端U6。
U相的反向支路2（X6-X1）连线方式与U相支路正向支路1（U1-U6）规律一样，只不过是沿与正向方向相反的圆周布线方式，反向支路2首端X6从绕组3槽第六层L6进入，最终从12槽第一层引出到反向支路2的尾端X1，详细连线方式见图4。
同理V相绕组的正向支路1（V1-V6）和反向支路2（Y6-Y1），W相绕组的正向支路1（W1-W6）和反向支路2（Z6-Z1）以和U相绕组同样的规律布线，详见图5。
如图5三相绕组原理展开图所示，电源引出线U相（由U1、X6组成）、V相（由V1、Y6组成）、W相（由W1、Z6组成）组成，且三相布置空间不交叉，其中U1、V1、W1均分布在绕组第一层，X6、Y6、Z6均分布在绕组第六层。
两个星点X1-Y1-Z1、U6-V6-W6均分布在电源引出线端绕组的最内层和最外层，布置连线时有利于利用端部径向空间，进而缩短端部轴向高度。
实施例2以54槽6层扁铜线、短距（Y=8）、角接、并联支路数（a=2）举例说明。绕组连线结构，如图5和图7所示，具体结构是：
所述绕组直线部分：按短距（Y=8），三相扁铜线绕组直线部分平均分成三相对称绕组U相、V相和W相，如图5所示。
所述绕组展开图为六层扁铜线绕组，即每个槽号中有6根扁铜线；
所述绕组为角接，并联支路数a=2，每相绕组由两个支路并联组成。
所述绕组直线部分、焊接端与图5完全一样，不一样的是三相绕组不是星接，而是采用角接，其电源引出线连接方式如图7所示，U相绕组由（U1-X6-Y1-V6）组成，V相绕组由（V1-Y6-Z1-W6）组成，W相绕组由（W1-Z6-X1-U6）组成。

Claims (5)

  1. 一种六极五十四槽扁铜线电机两支路平衡绕组结构，包括以铁芯槽圆周方向对称分相分布的三相扁铜线绕组，其中，所述三相扁铜线绕组包括分布在铁芯槽中的导线直线部分(4)、分布在铁芯(2)端部一侧的焊接端(3)和分布在铁芯(2)另一侧的电源引出线端(1)，
    焊接端(3)的跨距均相等，且焊接端(3)引出线高度均相等；电源引出线端(1)由三种跨距U-pin线(9)和异型线组成；对于星型接法，所述异型线包括U相电源线(5)、V相电源线(6)、W相电源线(7)、内侧星点线(8)和外侧星点线(10)；对于三角形接法，所述异型线包括所述U相电源线(5)、所述V相电源线(6)和所述W相电源线(7)。
  2. 如权利要求1所述的六极五十四槽扁铜线电机两支路平衡绕组结构，其中，所述三相扁铜线绕组为多层绕组，每相绕组均由两条支路并联组成，且每层绕组扭斜方向均一致，每条支路均由铁芯槽中的每一层扁铜线导体组成；
    所述的三相扁铜线绕组的层数N为不小于四的偶数；
    所述的三相扁铜线绕组为分布绕组，主体为波绕组形式。
  3. 如权利要求1或2所述的六极五十四槽扁铜线电机两支路平衡绕组结构，其中，所述三相扁铜线绕组的U相电源线(5)、V相电源线(6)和W相电源线(7)采用所述星型接法或所述三角形接法；
    所述的三相扁铜线绕组采用节距Y为八的短距、节距Y为九的整距或节距Y为十的长距。
  4. 如权利要求3所述的六极五十四槽扁铜线电机两支路平衡绕组结构，所述绕组结构采用两支路星型连接，其中，两根所述U相电源线(5)、两根所述V相电源线(6)、两根所述W相电源线(7)、三根所述内侧星点线(8)和三根所述外侧星点线(10)都分布在扁铜线电源引出线端(1)的最外层和最内层绕组上。
  5. 如权利要求3所述的六极五十四槽扁铜线电机两支路平衡绕组结构，所述绕组结构采用两支路三角形连接，其中，四根所述U相电源线(5)、四根所述V相电源线(6)和四根所述W相电源线(7)都分布在所述扁铜线电源引出线端(1)的最外层和最内层绕组上。
PCT/CN2023/090385 2022-07-20 2023-04-24 六极五十四槽扁铜线电机两支路平衡绕组结构 WO2024016765A1 (zh)

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