EP1105893A1 - Procede pour la fabrication de composants inductifs - Google Patents

Procede pour la fabrication de composants inductifs

Info

Publication number
EP1105893A1
EP1105893A1 EP99952348A EP99952348A EP1105893A1 EP 1105893 A1 EP1105893 A1 EP 1105893A1 EP 99952348 A EP99952348 A EP 99952348A EP 99952348 A EP99952348 A EP 99952348A EP 1105893 A1 EP1105893 A1 EP 1105893A1
Authority
EP
European Patent Office
Prior art keywords
mold
melt adhesive
winding
hot melt
core
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.)
Granted
Application number
EP99952348A
Other languages
German (de)
English (en)
Other versions
EP1105893B1 (fr
Inventor
Harald Hundt
Klemens Trabold
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.)
Vacuumschmelze GmbH and Co KG
Original Assignee
Vacuumschmelze GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vacuumschmelze GmbH and Co KG filed Critical Vacuumschmelze GmbH and Co KG
Publication of EP1105893A1 publication Critical patent/EP1105893A1/fr
Application granted granted Critical
Publication of EP1105893B1 publication Critical patent/EP1105893B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H01F41/005—Impregnating or encapsulating
    • 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 invention relates to a method for producing inductive components, in particular current transformers for electricity meters.
  • the object of the present invention is therefore to provide a new manufacturing method for inductive components, in particular for current transformers, in which the above-mentioned problems are largely avoided.
  • this object is achieved by a method of manufacturing inductive components with the following steps:
  • the molds used are usually made of aluminum or an aluminum alloy, which are much cheaper than the injection molds used for the housings according to the prior art. By using these shapes you can also compare to the prior art much shorter product launch times can be achieved because the shapes are much simpler. This results in quick and easy changes to customer-specific embodiments of the inductive components.
  • the molten hotmelt adhesive composition is preferably introduced under a pressure of 0 to 20 bar, preferably of approximately 10 to 20 bar, a thermoplastic hotmelt adhesive based on polyamide being provided as the hotmelt adhesive composition.
  • a thermoplastic hotmelt adhesive based on polyamide is provided as the hotmelt adhesive composition.
  • it is a filler-free hot melt adhesive based on polyamide.
  • various polyamide hot melt adhesives are compostable.
  • these thermoplastics do not necessarily have to be made from fossil materials such as petroleum or coal, but can also be made from renewable raw materials (wood resins).
  • connections of the winding or the connections of the windings are led out of the mold in a defined manner before the magnetic core is inserted into the mold. Cables are provided as connections.
  • connections of the winding or the connections of the windings are placed in the form of blind bores.
  • This enables the use of relatively rigid connections, so that the manufacturing method according to the invention can also be used to produce inductive components which are directly SMD-compatible (Service Mounted Device).
  • Ring cores made of metallic alloys, in particular ring band cores made of amorphous or nanocrystalline alloys, are preferably used as magnetic cores.
  • the use of such amorphous or nanocrystalline alloys results in a considerable volume reduction compared to the previously used crystalline alloys or ferrite cores, as well as significantly better technical properties of the inductive components of the type mentioned at the beginning.
  • the advantage and properties of these amorphous or nanocrystalline Linenen alloys are described in detail in EP 0 271 657 B1, for example.
  • Figure 1 is a plan view of a current transformer with the
  • FIG. 2 shows a section along the line I-I through the current transformer from FIG. 1.
  • a current transformer 1 produced by the method according to the invention consists of a magnetic core 2 which is provided with a secondary winding 3.
  • the secondary winding 3 usually consists of a few 100 to a few 1000 turns.
  • the secondary winding 3 of this current transformer 1 consists of relatively thin wire, i. H. the wire has a thickness of 0.05 to 0.25 mm.
  • the ends of the secondary winding 3 shown here are designed as two-wire strand 5, so that the current transformer 1 can be connected to a circuit board (not shown).
  • the magnetic core 2 of the current transformer 1 shown here is an annular core made of an amorphous alloy.
  • the toroidal core with the secondary winding 3 located thereon was produced using the low-pressure melt casting process according to the invention. ⁇ , O ⁇ PCT / DE99 / 02493 00/10180
  • a mold made of an aluminum alloy was provided (not shown).
  • the toroidal core with the secondary winding 3 located thereon was inserted into this mold, the secondary winding 3, the ends of which are designed as two-wire strands 5, being led out of the mold.
  • the mold was closed and a melted thermoplastic hot melt adhesive based on polyamide was introduced into the mold under a pressure of approx. 15 bar.
  • This creates a casting body 4 surrounding the magnetic core 2.
  • the casting body 4 has a continuous opening 5 through which the primary winding (not shown) of the current transformer 1 can be guided.
  • the mold was then cooled in a defined manner. After the mold had cooled, the mold was opened and the encapsulated current transformer 1 was removed. After removal of the cast current transformer 1, the sprue was removed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Insulating Of Coils (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

L'invention concerne un procédé de fabrication rationnel et économique pour des composants inductifs, notamment pour des transformateurs de courant. Dans ce procédé, on prépare un moule en alliage d'aluminium, dans lequel est placé le noyau magnétique, muni d'au moins un enroulement, du composant inductif. Après la fermeture du moule, celui-ci est rempli d'une matière adhésive fondue, de préférence à base de polyamide. Après le refroidissement définitif du moule, celui-ci est ouvert et l'élément inductif revêtu est enlevé, et les masselottes sont éliminées. Ce procédé se caractérise par un cycle de fabrication sensiblement simplifié par rapport à l'état actuel de la technique, et permettant notamment un positionnement exacte des connexions.
EP99952348A 1998-08-10 1999-08-10 Procede pour la fabrication de composants inductifs Expired - Lifetime EP1105893B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19836146A DE19836146A1 (de) 1998-08-10 1998-08-10 Verfahren zum Herstellen von induktiven Bauelementen
DE19836146 1998-08-10
PCT/DE1999/002493 WO2000010180A1 (fr) 1998-08-10 1999-08-10 Procede pour la fabrication de composants inductifs

Publications (2)

Publication Number Publication Date
EP1105893A1 true EP1105893A1 (fr) 2001-06-13
EP1105893B1 EP1105893B1 (fr) 2005-04-20

Family

ID=7877055

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99952348A Expired - Lifetime EP1105893B1 (fr) 1998-08-10 1999-08-10 Procede pour la fabrication de composants inductifs

Country Status (5)

Country Link
US (2) US6663815B1 (fr)
EP (1) EP1105893B1 (fr)
JP (1) JP2002524840A (fr)
DE (2) DE19836146A1 (fr)
WO (1) WO2000010180A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10024824A1 (de) * 2000-05-19 2001-11-29 Vacuumschmelze Gmbh Induktives Bauelement und Verfahren zu seiner Herstellung
WO2004088681A2 (fr) * 2003-04-02 2004-10-14 Vacuumschmelze Gmbh & Co. Kg Noyau magnetique, procede de realisation associe, utilisation d'un noyau magnetique de ce type notamment dans des transformateurs de courant et dans des bobines de choc a compensation de courant, alliages et bandes pour realiser un tel noyau magnetique
DE102006028389A1 (de) * 2006-06-19 2007-12-27 Vacuumschmelze Gmbh & Co. Kg Magnetkern und Verfahren zu seiner Herstellung
DE102007034925A1 (de) * 2007-07-24 2009-01-29 Vacuumschmelze Gmbh & Co. Kg Verfahren zur Herstellung von Magnetkernen, Magnetkern und induktives Bauelement mit einem Magnetkern
ES2405837B1 (es) 2012-11-12 2013-10-18 Premo, S.L. Dispositivo sensor de corriente de montaje superficial

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2242958A1 (de) * 1972-08-29 1974-03-14 Siemens Ag Stromwandler mit in einem giessharzkoerper eingebetteter primaerwicklungsanordnung
US4210859A (en) * 1978-04-18 1980-07-01 Technion Research & Development Foundation Ltd. Inductive device having orthogonal windings
JPS56112710A (en) * 1980-02-12 1981-09-05 Toshiba Corp Manufacture of molded transformer
JPS57122506A (en) * 1980-12-26 1982-07-30 Mitsubishi Electric Corp Simplified molding method for through current transformer
KR930005345B1 (ko) * 1986-10-23 1993-06-17 후지덴기 가부시기가이샤 소형모터의 고정자 하우징과 회전자
US4910861A (en) 1988-10-07 1990-03-27 Emerson Electric Co. Method of manufacturing retention structure for electric motor rotor magnets
JP2597678B2 (ja) * 1988-10-20 1997-04-09 松下電工株式会社 電流トランス
DE4015752A1 (de) * 1990-05-16 1991-11-21 Basf Lacke & Farben In amidischen loesungsmitteln geloeste schmelzklebelacke fuer hochtemperaturbestaendige beschichtungen
JP2884742B2 (ja) 1990-08-23 1999-04-19 タカタ株式会社 加速度センサの製作方法
US5331730A (en) 1992-09-03 1994-07-26 Siemens Automotive L.P. Method of making a coil molded into a magnetic stator
US5589808A (en) * 1993-07-28 1996-12-31 Cooper Industries, Inc. Encapsulated transformer
DE4426138C2 (de) * 1994-07-22 1998-04-23 Siemens Ag Gießform für eine Transformatorspule mit Kontrollmöglichkeit des Vergusses
FR2723248B1 (fr) 1994-07-29 1996-09-20 Seb Sa Procede de realisation d'un inducteur
JP3374356B2 (ja) 1995-05-26 2003-02-04 出光石油化学株式会社 発泡成形体の製造方法及び発泡成形体
GB2307661B (en) 1995-11-30 1998-04-29 Honda Lock Mfg Co Ltd Electromagnetic sensor and moulding die used for manufacturing the same
DE19746605A1 (de) * 1996-10-28 1998-06-10 Papst Motoren Gmbh & Co Kg Verfahren zum Isolieren des Stators eines elektronisch kommutierten Gleichstrommotors
US6103157A (en) * 1997-07-02 2000-08-15 Ciba Specialty Chemicals Corp. Process for impregnating electrical coils

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0010180A1 *

Also Published As

Publication number Publication date
WO2000010180A1 (fr) 2000-02-24
US6663815B1 (en) 2003-12-16
EP1105893B1 (fr) 2005-04-20
DE59911952D1 (de) 2005-05-25
DE19836146A1 (de) 2000-02-24
USRE41269E1 (en) 2010-04-27
JP2002524840A (ja) 2002-08-06

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