EP0668596B1 - Herstellungsverfahren für eine Spule auf einem toroidalen Magnetkreis - Google Patents

Herstellungsverfahren für eine Spule auf einem toroidalen Magnetkreis Download PDF

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Publication number
EP0668596B1
EP0668596B1 EP95400122A EP95400122A EP0668596B1 EP 0668596 B1 EP0668596 B1 EP 0668596B1 EP 95400122 A EP95400122 A EP 95400122A EP 95400122 A EP95400122 A EP 95400122A EP 0668596 B1 EP0668596 B1 EP 0668596B1
Authority
EP
European Patent Office
Prior art keywords
winding
magnetic circuit
toroidal magnetic
toroidal
gap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95400122A
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English (en)
French (fr)
Other versions
EP0668596A1 (de
Inventor
Rouelle Raholijaona
Luc Colombel
Roger Deon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mecagis SNC
Original Assignee
Mecagis SNC
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Publication date
Application filed by Mecagis SNC filed Critical Mecagis SNC
Publication of EP0668596A1 publication Critical patent/EP0668596A1/de
Application granted granted Critical
Publication of EP0668596B1 publication Critical patent/EP0668596B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/08—Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type
    • H01F17/04—Fixed inductances of the signal type with magnetic core
    • H01F17/06—Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid
    • H01F17/062—Toroidal core with turns of coil around it
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase AC
    • H01F38/28—Current transformers
    • H01F38/30—Constructions
    • H01F2038/305—Constructions with toroidal magnetic core
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49071—Electromagnet, transformer or inductor by winding or coiling

Definitions

  • the present invention relates to the manufacture of a winding on a toroidal magnetic circuit comprising an air gap.
  • Many electrical devices include a coil surrounding a toroidal magnetic circuit having an air gap. These are in particular Hall effect current sensors with zero flow, self-inductors, transformers with air gap.
  • a shuttle is used which is loaded beforehand with conductive wire which is rotated around the magnetic coil circuit so as to deposit, each turn, a turn on the magnetic circuit.
  • WO-A-87/04559 discloses a method for manufacturing toroidal windings on circuits magnetic toric in which a linear winding is produced by winding a conducting wire around a mandrel.
  • the winding is engaged on a magnetic circuit comprising an open air gap and the air gap is closed by bringing the lips together by deformation in the plane of the core.
  • EP-A-0 566 303 describes a deflection coil and its manufacturing method according to which a winding is impregnated with a thermoplastic resin which is heated to facilitate impregnation, said impregnation being carried out after winding.
  • the object of the present invention is to remedy these drawbacks by proposing a method of manufacturing windings on a toroidal magnetic circuit comprising an air gap, more compact, more precise and less expensive than the windings obtained by the prior art.
  • the subject of the invention is a method of manufacturing a winding on a toroidal magnetic circuit, according to which a linear winding is produced by winding around a cylindrical mandrel a conducting wire coated with a thermoadherent varnish, heating said conductive wire between 140 ° and 160 ° C, to open the magnetic circuit comprising an air gap, the lips of the air gap are moved aside, in a direction perpendicular to the plane of the toroidal magnetic circuit, the linear winding is removed from the mandrel cylindrical, the linear winding is heated to make it flexible, the linear winding is threaded onto the open toric magnetic circuit, the toric magnetic circuit is closed and the assembly is allowed to cool.
  • thermoadherent varnish is for example polyurethane modified with polyester and covered with a layer of polyamine (in accordance with standards NFC 31.622 and IEC 55-1 and IEC 55-2) and the temperature for reheating the linear winding is between 140 ° and 160 ° for a class F wire (standard NFC 31.461).
  • the linear winding can be carried out with a grade 1, class F copper wire from 0.18 mm to 0.25 mm in diameter.
  • the toroidal magnetic circuit is made of a soft iron-nickel alloy containing about 80% nickel.
  • a toric magnetic core with air gap 1 consisting of a rod of diameter ⁇ made of a soft fernickel alloy containing about 80% nickel.
  • the toroidal magnetic core with air gap 1 is a circular ring cut at a point, the cut constituting an air gap 2 of width e.
  • a coil 4 made up of wound electrically conductive wires.
  • the conductive wires are copper wires coated with a thermoadherent insulating varnish in accordance with NFC 31.622, IEC 55-1 and 55-2 standards, the varnish is a polyurethane modified with polyester and covered with a layer of polyamine.
  • the winding has a developed length L less than the developed length of the toric magnetic core and an internal diameter ⁇ + ⁇ slightly greater than the diameter ⁇ of the rod constituting the toric core.
  • a cylindrical winding 4 is produced in known manner by winding the conducting wire around a cylindrical mandrel 5 of diameter ⁇ + ⁇ by distributing the turns according to the envisaged application and causing adhesion. turns to each other by heating between 140 ° and 160 ° C.
  • This heating also causes polymerization of the assembly.
  • a mechanically homogeneous and rigid block is thus obtained, the geometric and electrical characteristics of which are well controlled.
  • This method has the advantage of making it possible to manufacture windings which, with identical electrical properties, are substantially less bulky than the windings obtained by the prior art. This is due to the fact that, in the prior art, the winding of the conductive wire around a torus causes a significant tension in the wire, which requires a very thick layer of protective varnish (grade 2 wires), whereas the technique according to the invention is done without twisting the wire, which allows the use of son having a much thinner varnish layer (grade 1 son).
  • a grade n wire is protected by n layers of varnish.
  • a coil of 2500 turns was produced at constant volume with a wire whose copper diameter was 0.25 mm, while in the prior art a wire whose copper diameter was to be used was 0.225 mm. This has resulted in a reduction in electrical resistance.
  • toric coils with perfectly organized contiguous turns are produced with wires with a diameter of less than 0.5 mm, the end flanks of which are perpendicular to the mean line. of the winding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Paints Or Removers (AREA)
  • Soft Magnetic Materials (AREA)
  • Insulating Of Coils (AREA)

Claims (9)

  1. Verfahren zur Herstellung einer Spule auf einem torischen Magnetkreis (1), bei dem man eine lineare Spule (4) durch Wickeln eines Leiterdrahtes, der mit einem thermoadhäsiven Harz bestrichen ist, um einen zylindrischen Dorn (5) herum, herstellt, den Leiterdraht auf zwischen 140 und 160°C erwärmt, zum Öffnen des Magnetkreises, der einen Luftspalt (2) aufweist, die Lippen des Luftspalts (2) in Richtung senkrecht zur Ebene des torischen Magnetkreises (1) trennt, die lineare Spule (4) vom zylindrischen Dorn (5) abzieht, die lineare Spule (4) zur Erweichung erwärmt, die lineare Spule auf den offenen torischen Magnetkreis (1) aufschiebt, den torischen Magnetkreis wieder schließt und die Anordnung abkühlen läßt.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der torische Magnetkreis (1) erwärmt wird auf eine Temperatur in der Nähe der Erwärmungstemperatur der linearen Spule (4).
  3. Verfahren nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß das thermoadhäsive Harz ein Polyurethan, das mit Polyester modifiziert ist, und eine Lage Polyamin ist.
  4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß die Temperatur der Erwärmung der linearen Spule zwischen 140 und 160°C für einen Draht der Klasse F ist.
  5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Spule aus einem Kupferdraht des ersten Grades, Klasse F, von 0,18 bis 0,25 mm Durchmesser hergestellt wird.
  6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Magnetkreis hergestellt wird aus einer Eisen-Nickel-Legierung.
  7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß beim Schließen des torischen Magnetkreises ein Luftspalt zurückgelassen wird, damit eine Spule auf einem torischen Kreis mit Luftspalt erhalten wird.
  8. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß beim Schließen des torischen Magnetkreises die Lippen des Luftspaltes miteinander verschweißt werden, damit eine Spule auf einem torischen Kreis ohne Luftspalt erhalten wird.
  9. Spule aus einem torischen magnetischen Kern mit gegeneinander anliegenden Wicklungen, dadurch gekennzeichnet, daß sie hergestellt ist nach dem Verfahren gemäß einem der Ansprüche 1 bis 8.
EP95400122A 1994-02-16 1995-01-20 Herstellungsverfahren für eine Spule auf einem toroidalen Magnetkreis Expired - Lifetime EP0668596B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9401772A FR2716291B1 (fr) 1994-02-16 1994-02-16 Procédé de fabrication d'un bobinage sur un circuit magnétique torique.
FR9401772 1994-02-16

Publications (2)

Publication Number Publication Date
EP0668596A1 EP0668596A1 (de) 1995-08-23
EP0668596B1 true EP0668596B1 (de) 1997-04-23

Family

ID=9460145

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95400122A Expired - Lifetime EP0668596B1 (de) 1994-02-16 1995-01-20 Herstellungsverfahren für eine Spule auf einem toroidalen Magnetkreis

Country Status (8)

Country Link
US (1) US5583475A (de)
EP (1) EP0668596B1 (de)
JP (1) JPH0837123A (de)
AT (1) ATE152282T1 (de)
CA (1) CA2142565A1 (de)
DE (1) DE69500246T2 (de)
ES (1) ES2104459T3 (de)
FR (1) FR2716291B1 (de)

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* Cited by examiner, † Cited by third party
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US6566994B1 (en) 1997-03-17 2003-05-20 Fluke Corporation Coil for an AC current sensor
US6675463B2 (en) 1997-09-12 2004-01-13 General Electric Company Methods for forming torodial windings for current sensors
US6242948B1 (en) * 1997-11-19 2001-06-05 Mitsubishi Denki Kabushiki Kaisha Semiconductor integrated circuit device
US6248279B1 (en) 1999-05-25 2001-06-19 Panzer Tool Works, Inc. Method and apparatus for encapsulating a ring-shaped member
EP1058278B1 (de) * 1999-06-04 2012-02-29 Liaisons Electroniques-Mecaniques Lem S.A. Gewickelter Magnetkreis
JP4851657B2 (ja) * 2001-05-14 2012-01-11 株式会社エス・エッチ・ティ 電流検出機能を具えたコイル装置
JP4603728B2 (ja) * 2001-06-22 2010-12-22 Ｎｅｃトーキン株式会社 磁心及びコイル部品
JP4745543B2 (ja) * 2001-06-22 2011-08-10 Ｎｅｃトーキン株式会社 磁芯およびコイル部品
CN1258782C (zh) * 2001-07-03 2006-06-07 Sht有限公司 线圈装置的制造方法
JP5008803B2 (ja) * 2001-07-17 2012-08-22 Ｎｅｃトーキン株式会社 コイル部品
FR2828002B1 (fr) * 2001-07-30 2003-10-31 Abb Control Sa Procede de fabrication d'une bobine torique dont le noyau magnetique presente un entrefer et boitier pour la mise en oeuvre de ce procede
NZ523324A (en) * 2002-12-20 2005-03-24 Wellington Drive Technologies Bobbins for toroidal core wound continuously
US7154368B2 (en) * 2003-10-15 2006-12-26 Actown Electricoil, Inc. Magnetic core winding method, apparatus, and product produced therefrom
JP4763609B2 (ja) * 2004-08-23 2011-08-31 日本科学冶金株式会社 磁性コア部品の製造方法
US20070077783A1 (en) * 2005-09-30 2007-04-05 Trw Automotive U.S. Llc Rotary connector system
US7880578B2 (en) * 2007-10-02 2011-02-01 Advanced Magnet Lab, Inc. Conductor assembly including a flared aperture region
CN101552135B (zh) * 2008-12-18 2011-08-24 台达电子（东莞）有限公司 制造环形线圈总成的方法及装置
US8674682B2 (en) * 2009-09-30 2014-03-18 General Electric Company Monitoring system and current transformers for partial discharge detection
TW201220337A (en) * 2010-11-02 2012-05-16 Largan Precision Co Ltd Method for producing coils
CN102543419A (zh) * 2010-12-07 2012-07-04 大立光电股份有限公司 线圈的制作方法
JP2011135091A (ja) * 2011-02-16 2011-07-07 Nec Tokin Corp 磁芯およびコイル部品
WO2014205164A1 (en) * 2013-06-20 2014-12-24 Liu Yuexin Magnetic components and rolling manufacturing method
SK500132014A3 (en) * 2014-02-11 2016-03-01 Ladislav Grno The sensor and method for electric current measuring
JP6454544B2 (ja) * 2014-12-26 2019-01-16 甲神電機株式会社 可飽和コアの固定具及び固定方法並びにフラックスゲート電流センサ
US9812246B1 (en) 2016-08-28 2017-11-07 Daniel Nunez Apparatus and method for a coiled wire nest and frame for toroidal induction
CN111323632B (zh) * 2019-07-15 2023-06-16 国网江西省电力有限公司电力科学研究院 交直流零磁通磁通门电流传感器及其程控配置及校准方法
CN113903591B (zh) * 2020-06-22 2023-08-15 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） 一种零磁通线圈的绕制方法及零磁通线圈

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US1994534A (en) * 1932-04-23 1935-03-19 Rca Corp Inductance coil and method of manufacture thereof
US3153841A (en) * 1960-06-06 1964-10-27 Admiral Corp Method of manufacturing a radio frequency coil
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JPH05290731A (ja) * 1992-04-13 1993-11-05 Murata Mfg Co Ltd 偏向コイルおよびその製造方法
US5247907A (en) * 1992-05-05 1993-09-28 The M. W. Kellogg Company Process furnace with a split flue convection section

Also Published As

Publication number Publication date
US5583475A (en) 1996-12-10
CA2142565A1 (fr) 1995-08-17
DE69500246D1 (de) 1997-05-28
JPH0837123A (ja) 1996-02-06
DE69500246T2 (de) 1997-08-07
FR2716291B1 (fr) 1996-05-03
ATE152282T1 (de) 1997-05-15
EP0668596A1 (de) 1995-08-23
FR2716291A1 (fr) 1995-08-18
ES2104459T3 (es) 1997-10-01

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