EP1293995A2 - Composant inductif électronique de type plat, en particulier transformateur planaire ou inducteur planaire - Google Patents

Composant inductif électronique de type plat, en particulier transformateur planaire ou inducteur planaire Download PDF

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Publication number
EP1293995A2
EP1293995A2 EP02020299A EP02020299A EP1293995A2 EP 1293995 A2 EP1293995 A2 EP 1293995A2 EP 02020299 A EP02020299 A EP 02020299A EP 02020299 A EP02020299 A EP 02020299A EP 1293995 A2 EP1293995 A2 EP 1293995A2
Authority
EP
European Patent Office
Prior art keywords
winding elements
winding
insulation
electronic component
inductive electronic
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
EP02020299A
Other languages
German (de)
English (en)
Other versions
EP1293995A3 (fr
EP1293995B1 (fr
Inventor
Christoph Gulden
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.)
STS
Sts Spezial-Transformatoren-Stockach & Co GmbH
Original Assignee
STS
Sts Spezial-Transformatoren-Stockach & Co GmbH
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 STS, Sts Spezial-Transformatoren-Stockach & Co GmbH filed Critical STS
Publication of EP1293995A2 publication Critical patent/EP1293995A2/fr
Publication of EP1293995A3 publication Critical patent/EP1293995A3/fr
Application granted granted Critical
Publication of EP1293995B1 publication Critical patent/EP1293995B1/fr
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
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/323—Insulation between winding turns, between winding layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2847—Sheets; Strips
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F19/00—Fixed transformers or mutual inductances of the signal type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2804—Printed windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/06—Insulation of windings

Definitions

  • the invention relates to an inductive electronic component in Planar construction, in particular a planar transformer or a Planar coil, with a winding package, which one or more planar Has windings, the windings from each other lying, flat and conductive, by insulating foils from each other separate, winding elements are formed, which around a winding core to be ordered.
  • winding elements in planar transformers and coils are insulated one above the other, with those assigned to the individual windings Winding elements in series connection electrically conductive with each other are connected.
  • the winding elements each comprise two electrical connections.
  • transformers which are usually one Have primary winding and at least one secondary winding, the Connections of the primary and secondary windings opposite each other executed.
  • Transformers and coils of this type are used, for example, in Switching power supplies are used and at switching frequencies from a few tens to several hundred kilohertz. Due to the high switching frequencies the number of winding elements and the size of the transformer or the coil can be kept small.
  • planar transformer or planar coil important by the responsible security authorities, such as V.D.E. (Germany), U.L. (USA), C.S.A (Canada) Safety criteria regarding the minimum clearances and creepage distances as well Insulation thicknesses between the individual winding elements and the core observed.
  • the air and creepage distances as well as the insulation thicknesses depend on the Rated voltage. For example, at a rated voltage of 300 volts for a safe separation between the winding elements as well as the winding elements and the core air gaps of 5.5 mm and Adhere to creepage distances of 6 mm.
  • the insulation thickness between the individual winding elements must be fixed depending on the application Insulation 1.0 mm and for multi-layer (3-layer) insulation a total of 0.3 mm.
  • transformers therefore comprise winding elements from one insulating film on which electrically conductive tracks are applied. At least one of the windings is in a closed housing led to maintain the prescribed creepage distances. additionally the conductor tracks are at a sufficient distance from the edge of the insulating foils arranged.
  • This type of isolation is e.g. in EP-B-0 542,445.
  • the disadvantage here is that due to the housing and the Distance of the conductor tracks to the film edge actually for the conductor tracks available changing window width is not fully used can be.
  • the object of the invention is an inductive electronic Component in planar construction, in particular a planar transformer or a planar coil of the type mentioned, with an insulation system provided that the prescribed safety requirements and a compact design of the transformer or coil at high Power density allows.
  • the insulation foils are dimensioned in such a way that the insulation, air and creepage distances prescribed by the responsible safety authorities are observed.
  • the term "film” should not be viewed as restrictive.
  • the insulation foils can be made of any suitable insulation material, preferably plastics such as polyester, PEN, polyamide, Nomex, are used.
  • the choice of insulation material depends on the requirements of the component (temperature resistance, UL approval, price, etc.).
  • the advantage of the invention can be seen in the fact that the prescribed insulation criteria are met without the need for special coil formers which ensure the insulation. Furthermore, the existing changing window width can be fully used.
  • the Dimensions of the insulation films in some areas the dimensions of the Winding elements and go in the other areas over the Dimensions of the winding elements, i.e. they are in them Subareas over the outer edges of the winding elements.
  • Winding elements can e.g. the following adhesive tapes are used: Polyester adhesive tape, PEN adhesive tape (Kaladex 2000), polyimide adhesive tape (Kapton). These are common, in transformer and Spulenbau used insulation adhesive tapes.
  • the insulation foils can be constructed in one layer as well as consist of several individual foil layers. Multiple layers have the advantage that the total insulation thickness required is reduced.
  • the winding elements are designed as essentially rectangular or oval, open conductor loops, each with two long legs and two short legs. The insulation foils, in particular in the area of the short legs, extend beyond the outer dimensions of the winding elements and ensure compliance with the insulation and creepage distances.
  • Invention can be provided that the winding package in the long Leg of the winding elements with several layers of an insulation film is wrapped.
  • the winding elements preferably consist of conductor plates, in particular from copper sheet.
  • the winding elements can also be made of a flat insulator with an applied conductive layer.
  • Figure 1 shows a view of a typical winding element, which preferably consists of a copper sheet.
  • the winding element 1 is in the Essentially designed and possessed as a rectangular or oval conductor loop each two, approximately parallel long legs 2, 3 and two mutually parallel short legs 4, 5.
  • Each winding element has 1 connections 6, 7 for winding elements. When several winding elements are stacked on top of each other, they come Connections 6, 7 lie exactly one above the other and allow a simple one Contacting the winding elements 1 with each other. The connections of the other winding are carried out opposite.
  • an insulation film 9 is introduced, as shown in FIG. 3 is shown.
  • the shape of the insulation foil corresponds approximately to that Winding elements 1.
  • the areas 10 of the insulation film 9 are approximately like this broad as the long legs 2, 3 of the winding elements 1, wherein however, the areas 11 are wider and longer, and in particular in the area of the short legs 4, 5, over the outer edges of the Stand out winding elements 1.
  • FIG. 4 shows a winding element 1 flanged with adhesive tape 8, which is placed on an insulation film 9.
  • the Insulation film 9 z. B. at the edges 12, 13 and 14 of the winding element 1 protrudes beyond these edges by a distance s.
  • This supernatant forms again the prescribed creepage distance of 2 x s between two superimposed winding elements 1.
  • the winding core 15, the two, in cross-section approximately E-shaped, core halves, is between the introduced winding package consisting of several winding elements 1, so that two legs of the core left and right of the long legs 2, 3 of the winding package and the middle leg of the core 15 lies in the interior of the winding package.
  • the supernatant of the Insulation film 9 on the edges 12 and 14 of the winding element 1 is a Corresponding insulation distance of 1 x s to the core 15 and 2 x s between the winding elements 1 ensured.
  • FIG. 5 shows a cross section through a long leg 2 of the finished Winding package. You can see the one on top of the other Winding elements 1, between each of which an insulating film 9 is arranged is.
  • the winding elements 1 are provided with an adhesive film 8 on their outer edges umbördelt.
  • the insulation foils 9 have a certain thickness d to the prescribed insulation distance between the respective Ensure winding elements 1.
  • On the outer edges of the Winding elements 1 only the flanged adhesive film 8 acts as insulation. Out for this reason, the outer legs of the winding package are additional wrapped with several layers of insulation film 16.
  • FIG. 6 shows an assembly aid 17 for assembling the Winding package shown.
  • the assembly aid consists of a flat one Base plate and several, from the base plate vertically upwards standing assembly mandrels 18 to 20.
  • the inner assembly mandrels 18 are of this type arranged that they in the interior of the winding elements 1 and the Intervene insulation foils 9. This will make the one on top of the other Layers of winding elements 1 and insulating foils aligned with each other.
  • the mounting mandrels 19 are arranged so that they are in the solder holes Connections 6, 7 of the winding elements 1 engage and thus ensure a further precise alignment of the winding elements.
  • the assembly mandrels 20 are used to align winding elements 1 with different designs Connections and solder holes.
  • FIG. 7 finally shows a top view of an inventive Transformer, the upper half of the winding core 15 of the overview is not shown for the sake of it. That surrounding the winding core 15 Winding package 21 comprises connections 22 led out opposite one another, 23 for the respective primary and secondary windings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Insulating Of Coils (AREA)
  • Coils Or Transformers For Communication (AREA)
EP02020299A 2001-09-14 2002-09-11 Composant inductif électronique de type plat, en particulier transformateur planaire ou inducteur planaire Expired - Lifetime EP1293995B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10145278 2001-09-14
DE10145278A DE10145278A1 (de) 2001-09-14 2001-09-14 Induktives elektronisches Bauelement in Flachbauweise insbesondere Planartransformator oder Planarspule

Publications (3)

Publication Number Publication Date
EP1293995A2 true EP1293995A2 (fr) 2003-03-19
EP1293995A3 EP1293995A3 (fr) 2003-04-16
EP1293995B1 EP1293995B1 (fr) 2006-06-14

Family

ID=7698994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02020299A Expired - Lifetime EP1293995B1 (fr) 2001-09-14 2002-09-11 Composant inductif électronique de type plat, en particulier transformateur planaire ou inducteur planaire

Country Status (7)

Country Link
EP (1) EP1293995B1 (fr)
AT (1) ATE330322T1 (fr)
CY (1) CY1105203T1 (fr)
DE (2) DE10145278A1 (fr)
DK (1) DK1293995T3 (fr)
ES (1) ES2266372T3 (fr)
PT (1) PT1293995E (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010035132A1 (fr) * 2008-09-26 2010-04-01 Lincoln Global, Inc. Transformateur plan et son procédé de fabrication
EP2400511A1 (fr) * 2010-06-28 2011-12-28 ABB Technology AG Bobine modulaire non circulaire pour transformateurs
US9620278B2 (en) 2014-02-19 2017-04-11 General Electric Company System and method for reducing partial discharge in high voltage planar transformers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04250605A (ja) * 1991-01-10 1992-09-07 Toshiba Corp 箔巻変圧器
EP0608127A1 (fr) * 1993-01-22 1994-07-27 AT&T Corp. Système d'isolation pour enroulements magnétiques avec des conducteurs plats empilés
US6087922A (en) * 1998-03-04 2000-07-11 Astec International Limited Folded foil transformer construction

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6379307A (ja) * 1986-09-22 1988-04-09 Murata Mfg Co Ltd 積層トランス
JPH06151179A (ja) * 1992-11-02 1994-05-31 Murata Mfg Co Ltd コイル
AT1045U1 (de) * 1995-10-03 1996-09-25 Fronius Schweissmasch Spulenkörper und verfahren zu dessen herstellung für einen transformator
DE19615921A1 (de) * 1996-04-22 1997-10-23 Vacuumschmelze Gmbh Induktives Bauelement in flacher Bauform
DE19834615A1 (de) * 1998-07-31 2000-02-03 Thomson Brandt Gmbh Transformator
DE19805914A1 (de) * 1998-02-13 1999-08-19 Thomson Brandt Gmbh Transformator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04250605A (ja) * 1991-01-10 1992-09-07 Toshiba Corp 箔巻変圧器
EP0608127A1 (fr) * 1993-01-22 1994-07-27 AT&T Corp. Système d'isolation pour enroulements magnétiques avec des conducteurs plats empilés
US6087922A (en) * 1998-03-04 2000-07-11 Astec International Limited Folded foil transformer construction

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 028 (E-1308), 19. Januar 1993 (1993-01-19) & JP 04 250605 A (TOSHIBA CORP), 7. September 1992 (1992-09-07) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010035132A1 (fr) * 2008-09-26 2010-04-01 Lincoln Global, Inc. Transformateur plan et son procédé de fabrication
US8054154B2 (en) 2008-09-26 2011-11-08 Linclon Global, Inc. Planar transformer and method of manufacturing
EP2400511A1 (fr) * 2010-06-28 2011-12-28 ABB Technology AG Bobine modulaire non circulaire pour transformateurs
US9620278B2 (en) 2014-02-19 2017-04-11 General Electric Company System and method for reducing partial discharge in high voltage planar transformers
US10236113B2 (en) 2014-02-19 2019-03-19 General Electric Company System and method for reducing partial discharge in high voltage planar transformers

Also Published As

Publication number Publication date
EP1293995A3 (fr) 2003-04-16
EP1293995B1 (fr) 2006-06-14
CY1105203T1 (el) 2010-03-03
ES2266372T3 (es) 2007-03-01
DE50207174D1 (de) 2006-07-27
DE10145278A1 (de) 2003-04-10
PT1293995E (pt) 2006-11-30
DK1293995T3 (da) 2006-10-16
ATE330322T1 (de) 2006-07-15

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