WO2021047307A1 - Procédé de soudage par points pour conducteur multicouche d'enroulement de moteur - Google Patents

Procédé de soudage par points pour conducteur multicouche d'enroulement de moteur Download PDF

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Publication number
WO2021047307A1
WO2021047307A1 PCT/CN2020/104583 CN2020104583W WO2021047307A1 WO 2021047307 A1 WO2021047307 A1 WO 2021047307A1 CN 2020104583 W CN2020104583 W CN 2020104583W WO 2021047307 A1 WO2021047307 A1 WO 2021047307A1
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WO
WIPO (PCT)
Prior art keywords
conductors
conductor
spot welding
welded
welding method
Prior art date
Application number
PCT/CN2020/104583
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English (en)
Chinese (zh)
Inventor
林中尉
Original Assignee
苏州阿福机器人有限公司
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Publication date
Application filed by 苏州阿福机器人有限公司 filed Critical 苏州阿福机器人有限公司
Publication of WO2021047307A1 publication Critical patent/WO2021047307A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/10—Spot welding; Stitch welding
    • B23K11/11—Spot welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/16—Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/34—Preliminary treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/36—Auxiliary equipment

Definitions

  • the present invention relates to a conductor welding method for motor windings, in particular to a spot welding method for multilayer conductors of flat wire motor windings.
  • the winding has become a trend from round wires to flat wires, and the flat wire windings are mostly welded windings.
  • the conventional method is to use electric welding on the end of the wire. This welding will cause the solder joints to heat up and solder joints.
  • the strength is low, and the consistency of the conductive cross-sectional area is difficult to ensure (because the copper is recrystallized in the air to be a large crystal, the resistance of the large crystal is increased, and the brittleness is large); or spot welding between every two layers.
  • the object of the present invention is to provide a spot welding method for a motor winding multilayer conductor that can quickly and reliably weld any two adjacent conductors when there are multiple conductors and the distance between adjacent conductors is small .
  • the spot welding method of the multilayer conductor of the motor winding of the present invention is arranged between any two adjacent conductors of at least three conductors that need to be welded together, which helps to weld the two adjacent conductors together.
  • the two electrodes of the resistance welding equipment clamp all the conductors, the welding current flows through all the conductors, and the two conductors on both sides of the fluxing component are welded together.
  • the fluxing member is a fluxing material.
  • two conductors that need to be welded are provided with a bump that reduces the contact area between the two conductors and increases the contact resistance.
  • the bump is Flux components.
  • a fluxing material is arranged between the bump and at least one of the two conductors to be welded, and the bump and the fluxing material are the fluxing members.
  • the bump is an integral structure with one of the two conductors to be welded, and the bump is a bump on the surface of the conductor itself. Or, the bump is independent of the two conductors that need to be welded, and is a separate structure from the two conductors that need to be welded.
  • the soldering material is flake solder or ribbon solder or cream solder.
  • the fluxing member is a conductor with a fluxing material entrained.
  • the conductor is a copper wire
  • the welding member is made of a material that helps to weld the copper together, such as silver solder sheet, silver copper solder sheet , All kinds of copper alloy welding piece, amorphous welding piece, etc.
  • a transition conductor is arranged between the conductors that are not welded to each other to realize a reliable connection between the conductors to reduce the contact resistance.
  • the beneficial effect of this patent as the conductor of the motor (usually copper material), the electrical conductivity is very strong.
  • the flux material soldder
  • bumps and them between the two target welding joint surfaces
  • the contact surfaces of the conductors that are not provided with the soldering member will not be welded together because of the low resistance and low heat generation, and the conductors are not easy to melt.
  • the invention utilizes this principle to realize spot welding of any two-layer conductors with a small multi-layer spacing.
  • Flux materials belong to the prior art, and are a general term for metal alloy materials used to add to welds, surfacing layers and brazing joints, including welding wires, welding rods, and brazing materials.
  • solder There are many types of solder, which can be divided into hard solder and soft solder according to different melting points; according to different composition, it can be divided into tin-lead solder, silver solder, copper solder, etc.
  • tin-lead alloy solder is generally used, tin-lead alloy solder is used for wire end soldering of motors of insulation grade A, B, and E, and pure tin solder is used for grade F and H.
  • Solder is often processed and shaped according to the specified size when in use, and has various shapes such as sheet, block, rod, ribbon and wire.
  • Flake solder (solder) is often used for welding silicon wafers and other flake welding parts.
  • the solder slices are generally extruded, such as tin solder slices, silver solder slices, nickel solder slices, copper solder slices, and are mainly used for brazing. Welding. Ribbon solder is often used in the production line for automatically assembling chips. An automatic soldering machine is used to punch a section from the ribbon-shaped solder for soldering to improve production efficiency.
  • a bump is provided as a welding member.
  • the bump can be a bump of the conductor itself or an independent member. Its function is to reduce the contact area between the conductors and increase the contact area between the conductors.
  • the contact resistance between the conductors, during welding, the heat generated by the electric energy will be mainly concentrated in the place where the resistance is large, so that the small contact area will quickly heat up, and then the melting connection will become a reliable solder joint.
  • the protrusions are round, rectangular, ring-shaped or any other geometric shapes.
  • the conductor is generally a copper wire with a rectangular cross-section
  • the commonly used flux materials are sheet solder, ribbon solder or cream solder, including silver solder, silver copper solder, and various copper alloy solders. , Amorphous solder, and paste solder of corresponding material.
  • the contact surfaces of the conductors that do not need to be welded should be reliably contacted, or a transition conductor should be set between conductors that are not welded to each other to achieve a reliable connection between the conductors to reduce contact resistance.
  • Figure 1 is a schematic diagram of spot welding a multilayer conductor of a motor winding
  • Figure 2 is another schematic diagram of spot welding a multilayer conductor of a motor winding
  • Figure 3 is another schematic diagram of spot welding the multilayer conductor of the motor winding
  • Fig. 4 is another schematic diagram of spot welding a multilayer conductor of a motor winding.
  • Figure 5 is a schematic diagram of spot welding a multilayer conductor of a motor winding
  • FIG. 6 is a bottom view of the conductor 11 or the conductor 14 in FIG. 5.
  • the multiple copper conductors 11, 12, 13, 14, 15 extending from the iron core slot, their ends are in the diameter of the iron core
  • the soldering material (solder) 2 is extended between the conductor 11 and the conductor 12, and between the conductor 14 and the conductor 15, and the two electrodes 31, 32 clamp all the conductors in the radial direction of the iron core, reliable contact between the conductor 12 and the conductor 13, and between the conductor 13 and the conductor 14, the welding current flows through all the conductors, and will be used as the flux material 2 of the flux component.
  • the conductor 11 and the conductor 12 and the conductor 14 and the conductor 15 on both sides are welded together.
  • a transition conductor (such as a conductive pad) is set between the conductor 12 and the conductor 13, and between the conductor 13 and the conductor 14.
  • Piece 4.
  • the multiple copper conductors 11, 12, 14, 15 extending from the iron core slot, their ends are in the radial direction of the iron core
  • the soldering material 2 is extended between the conductor 11 and the conductor 12, and between the conductor 14 and the conductor 15, and the two electrodes 31, 32 are along the iron
  • the core clamps all the conductors in the radial direction, the conductor 12 and the conductor 14 are in reliable contact, the welding current flows through all the conductors, and the conductor 11 and the conductor 12, and the conductor 14 and the conductor on both sides of the flux material 2 as the fluxing member 15 Welded together.
  • a transition conductor (such as a conductive gasket) 4 is provided between the conductor 12 and the conductor 14.
  • the fluxing component can also be made of materials that help braze together, or it can be a multilayer conductor with fluxing material entrained.
  • the conductor may be two or more conductors that have been welded together.
  • soldering material (solder) 2 between the bump 6 on the conductor 14 and the conductor 15.
  • the two electrodes 31, 32 clamp all the conductors along the radial direction of the iron core, and the bump 6 on the conductor 11 and the conductor 12 Contact, reliable contact between the conductor 12 and the conductor 13, and between the conductor 13 and the conductor 14.
  • the bump 6 on the conductor 14 is in contact with the conductor 15 through the soldering material 2, and the welding current flows through all the conductors and will act as a soldering member
  • the conductor 11 and the conductor 12 on both sides of the bump 6 are welded together, and the conductor 14 and the conductor 15 on both sides of the bump 6 as the soldering member and the soldering material 2 are soldered together.
  • the soldering component can also be any amount of solder or any material that helps to braze the brazing together, or it can be a multi-layer conductive structure with solder entrained.
  • the structure, material, state, etc. of the soldering component are different. Affect the protection scope of the claims of the present invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Windings For Motors And Generators (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

Procédé de soudage par points pour un conducteur multicouche d'un enroulement de moteur, comprenant : un composant de fluxage facilitant le soudage de deux conducteurs adjacents l'un à l'autre est disposé entre deux conducteurs quelconques parmi au moins trois conducteurs adjacents qui doivent être soudés les uns aux autres, deux électrodes d'un dispositif de soudage par résistance électrique serrent tous les conducteurs, et un courant de soudage circule à travers tous les conducteurs pour souder l'un à l'autre les deux conducteurs des deux côtés du composant de fluxage. Le procédé met en œuvre un soudage rapide et fiable de deux conducteurs quelconques adjacents dans une condition dans laquelle de multiples conducteurs sont prévus et un espacement entre les conducteurs adjacents est petit.
PCT/CN2020/104583 2019-09-12 2020-07-24 Procédé de soudage par points pour conducteur multicouche d'enroulement de moteur WO2021047307A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910867412.8A CN110560861A (zh) 2019-09-12 2019-09-12 一种电机绕组多层导体的点焊方法
CN201910867412.8 2019-09-12

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Publication Number Publication Date
WO2021047307A1 true WO2021047307A1 (fr) 2021-03-18

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CN (1) CN110560861A (fr)
WO (1) WO2021047307A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110560861A (zh) * 2019-09-12 2019-12-13 苏州阿福机器人有限公司 一种电机绕组多层导体的点焊方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH067952A (ja) * 1992-05-28 1994-01-18 Nippon Steel Corp 複層鋼板の溶接方法
CN1658476A (zh) * 2005-01-21 2005-08-24 程浩川 电子点焊工艺在片式振动电机线圈绕组引线连接上的应用
CN102363249A (zh) * 2011-06-27 2012-02-29 湖州剑力金属制品有限公司 金属工件
CN102794557A (zh) * 2012-08-30 2012-11-28 上海交通大学 一种用于提高差厚多层板薄板侧电阻点焊熔核尺寸的方法
WO2016005283A1 (fr) * 2014-07-08 2016-01-14 Thyssenkrupp Steel Europe Ag Soudage par résistance de tôles en sandwich en plusieurs étapes
CN109048021A (zh) * 2018-09-14 2018-12-21 上海工程技术大学 一种适用于多层薄板的带极点焊焊接工艺
CN109773321A (zh) * 2019-01-31 2019-05-21 上海梅达焊接设备有限公司 一种差强差厚多层板点焊方法
CN110560861A (zh) * 2019-09-12 2019-12-13 苏州阿福机器人有限公司 一种电机绕组多层导体的点焊方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3838986A (en) * 1971-10-27 1974-10-01 Texas Instruments Inc Composite metal thermostatic element
CN100341657C (zh) * 2005-05-10 2007-10-10 武佩 电阻点焊工艺
JP6507826B2 (ja) * 2015-04-28 2019-05-08 日立化成株式会社 導電性接合体および該接合体の製造方法
US10532420B2 (en) * 2017-09-12 2020-01-14 GM Global Technology Operations LLC Resistance spot welding of copper workpieces

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH067952A (ja) * 1992-05-28 1994-01-18 Nippon Steel Corp 複層鋼板の溶接方法
CN1658476A (zh) * 2005-01-21 2005-08-24 程浩川 电子点焊工艺在片式振动电机线圈绕组引线连接上的应用
CN102363249A (zh) * 2011-06-27 2012-02-29 湖州剑力金属制品有限公司 金属工件
CN102794557A (zh) * 2012-08-30 2012-11-28 上海交通大学 一种用于提高差厚多层板薄板侧电阻点焊熔核尺寸的方法
WO2016005283A1 (fr) * 2014-07-08 2016-01-14 Thyssenkrupp Steel Europe Ag Soudage par résistance de tôles en sandwich en plusieurs étapes
CN109048021A (zh) * 2018-09-14 2018-12-21 上海工程技术大学 一种适用于多层薄板的带极点焊焊接工艺
CN109773321A (zh) * 2019-01-31 2019-05-21 上海梅达焊接设备有限公司 一种差强差厚多层板点焊方法
CN110560861A (zh) * 2019-09-12 2019-12-13 苏州阿福机器人有限公司 一种电机绕组多层导体的点焊方法

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