WO2021023029A1 - Welding type motor winding end portion connection structure - Google Patents

Welding type motor winding end portion connection structure Download PDF

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Publication number
WO2021023029A1
WO2021023029A1 PCT/CN2020/104586 CN2020104586W WO2021023029A1 WO 2021023029 A1 WO2021023029 A1 WO 2021023029A1 CN 2020104586 W CN2020104586 W CN 2020104586W WO 2021023029 A1 WO2021023029 A1 WO 2021023029A1
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wire
wires
iron core
welded
welding
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PCT/CN2020/104586
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French (fr)
Chinese (zh)
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林中尉
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南京好龙电子有限公司
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Priority to CN201921276298.3 priority Critical
Priority to CN201921276298.3U priority patent/CN210167877U/en
Priority to CN201910726976.X priority
Priority to CN201910726976.XA priority patent/CN110380549A/en
Application filed by 南京好龙电子有限公司 filed Critical 南京好龙电子有限公司
Publication of WO2021023029A1 publication Critical patent/WO2021023029A1/en

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/04Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28Layout of windings or of connections between windings
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/46Fastening of windings on the stator or rotor structure
    • H02K3/50Fastening of winding heads, equalising connectors, or connections thereto

Abstract

A welding type motor winding end portion (11, 21) connection structure: after two wires (1, 2) extending from two slots of an iron core are bent towards each other, the two wires (1, 2) are welded at the intersection or the two wires (1, 2) are welded to two segments perpendicular to the core slots. The structure can effectively reduce the length of a winding and the wires (1, 2) along an axial direction of the iron core, shorten the length of the winding, reduce resistance of the motor winding, and improve motor efficiency.

Description

一种焊接式电机绕组端部连接结构A welding type motor winding end connection structure 技术领域Technical field
本专利涉及电机绕组端部连接结构This patent relates to the connection structure of the motor winding end
背景技术Background technique
随着动力电机的发展,扁截面导线用于动力电机成为发展趋势,穿过铁芯线槽的扁截面导线端部要相互焊接。为了实现焊接和扭头,参见图1,从铁芯线槽内延伸出来的导线1在铁芯周向弯折后,其端部还有一段与铁芯线槽平行的导线段10,用做扭头的夹持段和与其它导线焊接的结合段。这种结构,穿过线槽的两根导线相焊接的端部都必须有一段与铁芯线槽平行的导线段,两根导线通过相互平行且相对的两导线段焊接,虽然能够满足工艺要求,但是,在铁芯轴向方向(即与铁芯线槽相平行的方向)上额外增加了导线的长度和电机定子所占的空间。因此发明一种在铁芯轴向方向上不额外增加导线长度,且具有较短的端部连接部的焊接绕组,是扁线电机技术发展的方向。With the development of power motors, the use of flat cross-section wires in power motors has become a development trend, and the ends of the flat cross-section wires passing through the iron-core wire groove must be welded to each other. In order to realize welding and twisting, refer to Figure 1. After the wire 1 extending from the iron core slot is bent in the circumferential direction of the iron core, there is also a wire section 10 parallel to the iron core slot at its end, which is used as a clamp for the twisting head. The holding section and the joint section welded with other wires. With this structure, the welding ends of the two wires passing through the wire slot must have a wire segment parallel to the iron core wire slot, and the two wires are welded through two parallel and opposite wire segments, although it can meet the process requirements However, the length of the wire and the space occupied by the motor stator are additionally increased in the axial direction of the iron core (that is, the direction parallel to the iron core slot). Therefore, inventing a welding winding that does not increase the length of the wire in the axial direction of the iron core and has a shorter end connection is the direction of the development of the flat wire motor technology.
发明内容Summary of the invention
本专利的目的是提供一种能够有效降低绕组和导线在铁芯轴向方向的长度,绕组长度缩短,减小电机绕组的电阻,提高电机效率的焊接式电机绕组端部连接结构。The purpose of this patent is to provide a welding type motor winding end connection structure that can effectively reduce the length of the winding and the wire in the axial direction of the iron core, shorten the winding length, reduce the resistance of the motor winding, and improve the efficiency of the motor.
本专利所述的焊接式电机绕组端部连接结构,从铁芯的两个线槽内延伸出来的两根导线相向弯折后,两导线在相交处相焊接或者两导线与铁芯线槽垂直的两段相焊接。In the welding type motor winding end connection structure described in this patent, after two wires extending from the two wire slots of the iron core are bent toward each other, the two wires are welded at the intersection or the two wires are perpendicular to the iron core wire slot The two sections are welded together.
本专利的有益效果:相对于现有技术中导线端部必须有一段与铁芯线槽平行的导线段结构,本专利中的导线在铁芯端面相向进行弯折,相焊接的两根导线端部是不与铁芯线槽平行的,而是与铁芯线槽倾斜或者垂直的。也就是说,本技术中的导线没有现有技术中的与铁芯线槽平行的导线段10,所以导线在铁芯轴向方向只需要较短长度,而且也缩短了绕组端部的在铁芯轴向方向上的长度,进一步缩小电机尺寸,这样也减小了电机绕组的电阻,提高了电机效率。The beneficial effects of this patent: Compared with the prior art, the wire end must have a wire segment structure parallel to the iron core slot. The wire in this patent is bent at the end of the iron core, and the two wire ends are welded. The part is not parallel to the iron core slot, but is inclined or perpendicular to the iron core slot. That is to say, the wire in this technology does not have the wire section 10 parallel to the iron core slot in the prior art, so the wire only needs a short length in the axial direction of the iron core, and it also shortens the winding end in the iron core. The length of the core in the axial direction further reduces the size of the motor, which also reduces the resistance of the motor windings and improves the efficiency of the motor.
上述焊接式电机绕组端部连接结构,两根导线端部在铁芯径向相对的贴合面相焊接。In the welding type motor winding end connection structure, the two wire ends are welded on the diametrically opposed bonding surfaces of the iron core.
上述焊接式电机绕组端部连接结构,一根导线的端部周边全部或局部与另一根导线的端部周边全部或局部之间相焊接,例如,一根导线的端部端面或端部端面的一部分与另一根导线的端部侧面之间相焊接等等。In the above welding type motor winding end connection structure, all or part of the periphery of the end of one wire is welded to all or part of the periphery of the end of another wire, for example, the end face or end face of a wire Part of the wire is welded to the end side of the other wire, etc.
上述焊接式电机绕组端部连接结构,一根导线的端部在径向方向弯折后与另一根导线的端部 相焊接。这样,两根导线之间就形成了绝缘空间。In the welding type motor winding end connection structure, the end of one wire is bent in the radial direction and then welded to the end of the other wire. In this way, an insulating space is formed between the two wires.
上述焊接式电机绕组端部连接结构,两根导线的端部在径向方向同时弯折后端部相焊接。这样,两根导线之间就形成了绝缘空间。In the welding type motor winding end connection structure, the ends of the two wires are simultaneously bent in the radial direction and the rear ends are welded. In this way, an insulating space is formed between the two wires.
导线端部的形状不影响本专利的权利要求范围;The shape of the wire end does not affect the scope of the patent claims;
两根导线之间的焊接工艺,以及各种预处理等工艺,不影响本专利的权利要求范围;The welding process between the two wires, as well as various pretreatment processes, etc., do not affect the scope of the patent claims;
两根导线的伸出铁芯部分的结构,不影响本专利的权利要求范围。The structure of the part of the two wires extending out of the core does not affect the scope of the patent claims.
附图说明Description of the drawings
图1是现有技术的焊接式电机绕组端部连接结构的展开示意图;Fig. 1 is an exploded schematic diagram of a welding type motor winding end connection structure in the prior art;
图2是本专利的焊接式电机绕组端部连接结构的展开示意图;Figure 2 is an expanded schematic diagram of the welding-type motor winding end connection structure of the patent;
图3是穿过铁芯线槽的两根导线焊接结构示意图;Figure 3 is a schematic diagram of the welding structure of two wires passing through the iron core slot;
图4是图3的A向视图(两根导线端部在铁芯径向无弯折,在铁芯径向相对的贴合面相焊接的结构示意图);Fig. 4 is a view from the direction A of Fig. 3 (a schematic diagram of the structure in which the ends of the two wires are not bent in the radial direction of the iron core and are welded on the radially opposite bonding surfaces of the iron core);
图5是穿过铁芯线槽的两根导线焊接结构示意图;Figure 5 is a schematic diagram of the welding structure of two wires passing through the iron core slot;
图6是图5的A向视图(一根导线端部在铁芯径向弯折,两根导线在铁芯径向相对的贴合面相焊接的结构示意图);Fig. 6 is a view from the direction A of Fig. 5 (a structural diagram in which the end of one wire is bent in the radial direction of the iron core, and the two wires are welded on the radially opposite bonding surfaces of the iron core);
图7是穿过铁芯线槽的两根导线焊接结构示意图;Figure 7 is a schematic diagram of the welding structure of two wires passing through the iron core slot;
图8是图7的A向视图(两根导线端部在铁芯径向无弯折,一根导线的端部端面与另一根导线的端部侧面之间相焊接的结构示意图);8 is a view from the direction A of FIG. 7 (the ends of the two wires are not bent in the radial direction of the core, and the end face of one wire is welded to the side face of the other wire);
图9是穿过铁芯线槽的两根导线焊接结构示意图;Figure 9 is a schematic diagram of the welding structure of two wires passing through the iron core slot;
图10是图9的A向视图(一根导线端部在铁芯径向弯折,一根导线的端部端面与另一根导线的端部侧面之间相焊接的结构示意图);Fig. 10 is a view from the direction A of Fig. 9 (a structural diagram in which the end of one wire is bent in the radial direction of the iron core, and the end face of one wire is welded to the end side face of the other wire);
图11是穿过铁芯线槽的两根导线焊接结构示意图;Figure 11 is a schematic diagram of the welding structure of two wires passing through the iron core wire slot;
图12是图11的A向视图(两根导线端部在铁芯径向无弯折,一根导线的端部端面和端部侧面的一部分与另一根导线的端部端面和端部侧面的一部分之间相焊接的结构示意图);Fig. 12 is a view from the direction A of Fig. 11 (the ends of the two wires are not bent in the radial direction of the core, part of the end face and side face of one wire and the end face and end face of the other wire Schematic diagram of the welded part of the structure);
图13是穿过铁芯线槽的两根导线焊接结构示意图;Figure 13 is a schematic diagram of the welding structure of two wires passing through the iron core wire slot;
图14是图13的A向视图(两根导线端部在铁芯径向弯折,一根导线的端部端面与另一根导线的端部侧面相焊接的结构示意图);Fig. 14 is a view from the direction A of Fig. 13 (the ends of two wires are bent in the radial direction of the iron core, and the end surface of one wire is welded to the side surface of the other wire);
图15是穿过铁芯线槽的两根导线焊接结构示意图(两根导线在铁芯周向两次相向弯折);Figure 15 is a schematic diagram of the welding structure of two wires passing through the iron core slot (the two wires are bent toward each other twice in the circumferential direction of the iron core);
图16是图15的俯视图(一根导线端部在铁芯径向弯折,在铁芯径向相对的贴合面相焊接,焊 接的两导线端部相平行的结构示意图);Fig. 16 is a top view of Fig. 15 (a structural schematic diagram in which the end of a wire is bent in the radial direction of the iron core, and the welding surface is welded on the radially opposite bonding surface of the iron core, and the ends of the welded two wires are parallel);
图17是穿过铁芯线槽的两根导线焊接结构示意图(两根导线在铁芯周向多次相向弯折);Figure 17 is a schematic diagram of the welding structure of two wires passing through the iron core wire slot (the two wires are bent toward each other multiple times in the circumferential direction of the iron core);
图18是图17的俯视图(一根导线端部在铁芯径向弯折,在铁芯径向相对的贴合面相焊接,焊接的两导线端部相平行的结构示意图)。Fig. 18 is a top view of Fig. 17 (a structural schematic diagram in which the ends of a wire are bent in the radial direction of the iron core, and the welding surfaces are welded on the radially opposite bonding surfaces of the iron core, and the welded ends of the two wires are parallel).
具体实施方式detailed description
实施例:两导线在相交处相焊接Example: Two wires are welded at the intersection
参见图2所示的焊接式电机绕组端部连接结构,从两个铁芯线槽内延伸出来的两根导线1、2在铁芯周向相向弯折一次后,它们相交的端部相焊接。焊接时,一根导线的端部周边全部或局部与另一根导线的端部周边全部或局部之间相焊接。Refer to the welding type motor winding end connection structure shown in Figure 2. After the two wires 1 and 2 extending from the two iron core slots are bent once in the circumferential direction of the iron core, their intersecting ends are welded . During welding, all or part of the periphery of the end of one wire is welded to all or part of the periphery of the end of the other wire.
参见图3-6,导线1的端部11与导线2的端部21在铁芯径向相对的贴合面相焊接。Referring to Figures 3-6, the end 11 of the wire 1 and the end 21 of the wire 2 are welded on the diametrically opposed surfaces of the iron core.
参见图7-10,导线1的端部11端面与导线2的端部21侧面之间相焊接,同时,导线2的端部21端面与导线1的端部11侧面之间相焊接。7-10, the end surface of the end 11 of the wire 1 and the side surface of the end 21 of the wire 2 are welded, and at the same time, the end surface of the end 21 of the wire 2 and the end 11 side of the wire 1 are welded.
参见图6、10,两根导线之间为形成绝缘空间3,导线2的端部21在径向方向弯折后与导线1的端部11相焊接(图6),或者导线1的端部在径向方向弯折后与导线2的端部相焊接(图10)。6 and 10, an insulating space 3 is formed between the two wires. The end 21 of the wire 2 is bent in the radial direction and then welded to the end 11 of the wire 1 (Fig. 6), or the end of the wire 1 After bending in the radial direction, it is welded to the end of the wire 2 (Figure 10).
参见图11、12,导线1的端部11端面和侧面的一部分与导线2的端部21端面和侧面的一部分之间相焊接。11 and 12, a part of the end surface and side surface of the end portion 11 of the wire 1 and a part of the end surface and side surface of the end portion 21 of the wire 2 are welded.
参见图13、14,导线1的端部11端面与导线2的端部21侧面之间相焊接,且两根导线之间为形成绝缘空间3,两根导线的端部在径向方向同时弯折后相交的端部相焊接。Referring to Figures 13 and 14, the end surface of the end 11 of the wire 1 and the side surface of the end 21 of the wire 2 are welded, and an insulating space 3 is formed between the two wires. The ends of the two wires are simultaneously bent in the radial direction. After folding, the intersecting ends are welded together.
在对导线伸出铁芯的部分扭头时,通过扭头工装拨动导线在铁芯周向的侧面,使导线弯曲到需要斜度,且使需要连接的两根导线的端部重叠在一起,形成如图3-6所示的状态,通过电阻焊或超声波焊或其他任何能够使导线两个贴合面之间形成金属连接的焊接工艺,将两导线端部焊接在一起。当然也可以使用电焊或激光焊或其他任何能够将两个金属件的缝隙焊接到一起的焊接工艺,参见图7-14,将导线的边缘附近焊接在一起,所述的焊接可以是一个焊点也可以是一个一个以上的焊点。When twisting the part of the wire protruding from the iron core, use the twisting tool to pull the wire on the circumferential side of the iron core to bend the wire to the required slope and overlap the ends of the two wires to be connected to form As shown in Figure 3-6, the ends of the two wires are welded together by resistance welding or ultrasonic welding or any other welding process that can form a metal connection between the two bonding surfaces of the wires. Of course, electric welding or laser welding or any other welding process that can weld the gap of two metal parts together can also be used. See Figure 7-14. Weld the edges of the wires together. The welding can be a welding spot. It can also be more than one solder joint.
而且,对于图3-14来说,当对伸出铁芯线槽的导线扭头使得导线在铁芯周向弯折时,只需要扭头工装对导线在铁芯周向方向上的侧面施加外力即可。因而在导线扭头时,由于图3-14中所示相焊接的导线只有一个部位进行折弯(导线倾斜部分的折弯除外),因此,扭头成型阻力只有常规的一半,扭头工装的受力只有常规的一半,所以更容易成型和保证质量。Moreover, for Figure 3-14, when twisting the wire extending from the iron core slot to make the wire bend in the circumferential direction of the iron core, only the twisting tool is needed to apply external force to the side of the wire in the circumferential direction of the iron core. Therefore, when the wire is twisted, since the welded wire shown in Figure 3-14 has only one part to be bent (except for the bending of the inclined part of the wire), the forming resistance of the twisting head is only half of the conventional one, and the force of the twisting tooling is only Half of the conventional, so it is easier to shape and ensure quality.
实施例:两导线与铁芯线槽垂直的两段相焊接Example: Two wires are welded to the two vertical sections of the iron core slot
参见图15-18所示的焊接式电机绕组端部连接结构,从两个铁芯线槽内延伸出来的两根导线1、2在铁芯周向相向弯折两次或多次后,它们与铁芯线槽垂直的导线端部11、12相焊接。两根导线端部11、12在平行于铁芯端面的平面内相互平行。焊接时,参见图16、18,导线1的端部11与导线2的端部21在铁芯径向相对的贴合面相焊接,且导线2的端部21在径向方向弯折后与导线1的端部11相焊接。通过电阻焊或超声波焊或其他任何能够使导线两个贴合面之间形成金属连接的焊接工艺,将两导线端部焊接在一起。Refer to the welding type motor winding end connection structure shown in Figure 15-18. After the two wires 1 and 2 extending from the two iron core slots are bent two or more times in the circumferential direction of the iron core, they The wire ends 11 and 12 perpendicular to the iron core slot are welded. The two wire ends 11 and 12 are parallel to each other in a plane parallel to the end face of the iron core. When welding, referring to Figures 16 and 18, the end 11 of the wire 1 and the end 21 of the wire 2 are welded on the radially opposite bonding surface of the iron core, and the end 21 of the wire 2 is bent in the radial direction with the wire The ends of 1 are welded together. The ends of the two wires are welded together by resistance welding or ultrasonic welding or any other welding process that can form a metal connection between the two bonding surfaces of the wires.
这样,相对于现有技术,本专利中的导线不需要留有额外的夹持部分,也不需要单独的与铁芯线槽平行的焊接部分,该结构使电机绕组端部尺寸缩短,导线长度缩短,既减小了电机绕组的电阻,提高电机效率,同时又减小了电机绕组的长度,具有很好的现实意义和先进性。In this way, compared with the prior art, the wire in this patent does not need to leave an extra clamping part, nor does it require a separate welding part parallel to the iron core slot. This structure shortens the size of the motor winding end and the wire length Shortening not only reduces the resistance of the motor windings and improves the efficiency of the motor, but also reduces the length of the motor windings, which has good practical significance and advancement.

Claims (5)

  1. 一种焊接式电机绕组端部连接结构,其特征是:从铁芯的两个线槽内延伸出来的两根导线相向弯折后,两导线在相交处相焊接或者两导线与铁芯线槽垂直的两段相焊接。A welding type motor winding end connection structure, which is characterized in that: after two wires extending from the two wire slots of the iron core are bent toward each other, the two wires are welded at the intersection or the two wires and the iron core wire slot The two vertical sections are welded together.
  2. 如权利要求1所述的焊接式电机绕组端部连接结构,其特征是:两根导线端部在铁芯径向相对的贴合面相焊接。The welding type motor winding end connection structure according to claim 1, characterized in that the ends of the two wires are welded on the radially opposite bonding surfaces of the iron core.
  3. 如权利要求1所述的焊接式电机绕组端部连接结构,其特征是:一根导线的端部周边全部或局部与另一根导线的端部周边全部或局部之间相焊接。The welding type motor winding end connection structure according to claim 1, wherein the whole or part of the periphery of the end of one wire is welded to the whole or part of the periphery of the end of the other wire.
  4. 如权利要求1所述的焊接式电机绕组端部连接结构,其特征是:一根导线的端部在径向方向弯折后与另一根导线的端部相焊接。The welding type motor winding end connection structure according to claim 1, wherein the end of one wire is bent in the radial direction and then welded to the end of the other wire.
  5. 如权利要求1所述的焊接式电机绕组端部连接结构,其特征是:两根导线的端部在径向方向同时弯折后端部相焊接。The welding type motor winding end connection structure according to claim 1, wherein the ends of the two wires are simultaneously bent in the radial direction and the rear ends are welded.
PCT/CN2020/104586 2019-08-07 2020-07-24 Welding type motor winding end portion connection structure WO2021023029A1 (en)

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CN201921276298.3 2019-08-07
CN201921276298.3U CN210167877U (en) 2019-08-07 2019-08-07 Welded motor winding end connection structure
CN201910726976.X 2019-08-07
CN201910726976.XA CN110380549A (en) 2019-08-07 2019-08-07 A kind of welded type motor winding terminal portion connecting structure

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014100039A (en) * 2012-11-16 2014-05-29 Hitachi Automotive Systems Ltd Stator of rotary electric machine
CN108233575A (en) * 2016-12-14 2018-06-29 丰田自动车株式会社 Electric rotating machine
CN108988593A (en) * 2018-08-09 2018-12-11 苏州阿福机器人有限公司 Machine winding production method and winding construction
CN109245342A (en) * 2017-07-10 2019-01-18 本田技研工业株式会社 The stator of rotating electric machine
CN110380549A (en) * 2019-08-07 2019-10-25 南京好龙电子有限公司 A kind of welded type motor winding terminal portion connecting structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014100039A (en) * 2012-11-16 2014-05-29 Hitachi Automotive Systems Ltd Stator of rotary electric machine
CN108233575A (en) * 2016-12-14 2018-06-29 丰田自动车株式会社 Electric rotating machine
CN109245342A (en) * 2017-07-10 2019-01-18 本田技研工业株式会社 The stator of rotating electric machine
CN108988593A (en) * 2018-08-09 2018-12-11 苏州阿福机器人有限公司 Machine winding production method and winding construction
CN110380549A (en) * 2019-08-07 2019-10-25 南京好龙电子有限公司 A kind of welded type motor winding terminal portion connecting structure

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