EP1536436A1 - Procede de fabrication de transformateurs planaires et transformateur planaire fabrique selon ledit procede - Google Patents

Procede de fabrication de transformateurs planaires et transformateur planaire fabrique selon ledit procede Download PDF

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Publication number
EP1536436A1
EP1536436A1 EP03761602A EP03761602A EP1536436A1 EP 1536436 A1 EP1536436 A1 EP 1536436A1 EP 03761602 A EP03761602 A EP 03761602A EP 03761602 A EP03761602 A EP 03761602A EP 1536436 A1 EP1536436 A1 EP 1536436A1
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EP
European Patent Office
Prior art keywords
windings
resin
block
planar
insulating
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
EP03761602A
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German (de)
English (en)
Other versions
EP1536436B1 (fr
Inventor
Javier Gazo Pastor
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.)
Premo SA
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Premo SA
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Publication date
Application filed by Premo SA filed Critical Premo SA
Publication of EP1536436A1 publication Critical patent/EP1536436A1/fr
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Publication of EP1536436B1 publication Critical patent/EP1536436B1/fr
Anticipated expiration legal-status Critical
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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
    • H01F41/005—Impregnating or encapsulating
    • 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
    • H01F27/02—Casings
    • H01F27/022—Encapsulation
    • 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
    • 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
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • 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
    • 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
    • H01F27/325—Coil bobbins
    • 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
    • H01F27/327—Encapsulating or impregnating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads
    • H01F2005/043—Arrangements of electric connections to coils, e.g. leads having multiple pin terminals, e.g. arranged in two parallel lines at both sides of the coil
    • 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
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H01F2027/297—Terminals; Tapping arrangements for signal inductances with pin-like terminal to be inserted in hole of printed path

Definitions

  • This invention relates to a process for the manufacture of planar transformers and a planar transformer manufactured by means of said process.
  • the object of this invention is to provide planar transformers of very small size and with a large capacity for insulation between layers, in particular between windings, offering the further possibility that they may be manufactured economically.
  • this invention discloses the manufacture of planar transformers comprising solely of windings and insulating layers of variable thickness according to the insulation between integrated circuits and/or windings manufactured by the punching of copper sheets or wound copper, ensuring that there is dielectric strength in the vertical direction.
  • Document US 5,317,300 describes a wholly conventional non-planar transformer with a coil, windings and terminals and a core formed by retention plates. Therefore it relates in fact to a transformer which belongs to a wholly separate stage in the development of transformers. It is cited because unlike the documents mentioned above it describes the total or partial encapsulation of the transformer with a thermoplastic material by injection.
  • manufacture of the planar transformer is effected through a series of successive operations which in total comprise:
  • the insulating layers In order to achieve good penetration by the resin, for example polyurethane, between the windings, it is necessary for the insulating layers to be of sufficient size to permit such penetration, in order to leave a larger region for penetration by the insulating resin.
  • the resin for example polyurethane
  • the box for moulding the assembly of windings, insulating plates and printed circuits may be incorporated in the transformer for the purpose of acting as an envelope for the assembly, although the transformer may be manufactured in the manner indicated within a metal or shell mould, in which case there is no outer box moulding the polyurethane resin.
  • Figure 1 illustrates the set of parts forming a planar transformer manufactured according to this invention, in which the relative position of a resin moulding box and the ferrite cores can be seen.
  • Figure 2 shows a cross-section of the planar transformer on a larger scale in which the moulding box is arranged in the form of a protective envelope.
  • Figure 3 illustrates a second cross-section of the planar transformer along a plane parallel to that in Figure 2.
  • Figure 4 shows a plan view
  • a planar transformer according to this invention comprises a set of interleaved windings and insulating layers stacked into an assembly joined together by a set of connecting pins as seen in Figure 1, in which may be seen the laminar printed circuit winding members -1- and -2- and intermediate windings -3- and -4-, punched from copper sheet or wound from the same material, the separators of insulating material -5-, -6-, -7-, -8- and -9- being located on each side of the said members and having surface dimensions which are smaller than those of printed circuit windings -1- and -2-.
  • the arrangement is that which may be seen in Figures 2 and 3, in which the arrangement of the windings, printed circuit boards and separators can be seen, fixed in position through a variable number of through pins, with the pins represented by the numbers -10-, -10'-, -10"- ..., as may be seen in Figure 1, it being understood that their number and arrangement will depend on the circuits enclosed.
  • These pins are inserted in the corresponding orifices in the printed circuit boards and winding boards as indicated for example by numbers -11-, - 11'-, -11"- ... in printed circuit board -1- and numbers -12- and -12'- in winding -3-.
  • pins are attached to the said panels and windings in ways which are known in the art, for example by cold welding, cementing masses or other means.
  • the assembly is embedded in a mass of insulating resin, for example polyurethane, which can be achieved by casting in an external or "shell” mould or using a box of appropriate structure -13-, which has an external shape matching that of the printed circuit boards, with lateral steps such as -14- and -15- to match lateral notches -16- and -17- of the said printed circuit boards and an extended central core -18- designed to coincide with the central openings of the said stacked members, that is, printed circuit boards, windings and insulating separators.
  • insulating resin for example polyurethane
  • ferrite cores -19- and -20- are attached, being joined by laminar insulating members fitted externally thereto or by any other means known in the art.
  • Figure 4 illustrates a plan view of an embodiment of a planar transformer manufactured in accordance with this invention, in which will be seen enclosing box -13- incorporated in the mass of polyurethane resin, forming end blocks -21- and -34- which are interconnected by portions -22- and -23- of which only the beginning can be seen in Figure 4, edging the central opening -25-.
  • the ends of the connecting pins extend beyond the block of polyurethane resin, being represented by the numbers -26-, -27-, -28- and -29- in the case of block -20- and pins -30-, -31-, -32- and -33- in the case of block -21-, although it should be understood that the number and arrangement of the said pins may vary with the specific design of the planar transformer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Insulating Of Coils (AREA)
EP03761602.6A 2002-06-26 2003-06-23 Procede de fabrication de transformateurs planaires et transformateur planaire fabrique selon ledit procede Expired - Lifetime EP1536436B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ES200201465 2002-06-26
ES200201465A ES2197830B1 (es) 2002-06-26 2002-06-26 Procedimiento para la fabricacion de transformadores planares y transformador planar fabricado de acuerdo con el mismo.
PCT/ES2003/000309 WO2004003947A1 (fr) 2002-06-26 2003-06-23 Procede de fabrication de transformateurs planaires et transformateur planaire fabrique selon ledit procede

Publications (2)

Publication Number Publication Date
EP1536436A1 true EP1536436A1 (fr) 2005-06-01
EP1536436B1 EP1536436B1 (fr) 2017-01-25

Family

ID=29797398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03761602.6A Expired - Lifetime EP1536436B1 (fr) 2002-06-26 2003-06-23 Procede de fabrication de transformateurs planaires et transformateur planaire fabrique selon ledit procede

Country Status (4)

Country Link
EP (1) EP1536436B1 (fr)
AU (1) AU2003242793A1 (fr)
ES (1) ES2197830B1 (fr)
WO (1) WO2004003947A1 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2230676A2 (fr) 2009-03-19 2010-09-22 TDK Corporation Composant de bobine, transformateur, unité d'alimentation électrique de commutation et procédé de fabrication du composant de bobine
EP2500918A1 (fr) * 2011-03-16 2012-09-19 Delphi Technologies, Inc. Structure magnétique planaire
DE102011075707A1 (de) * 2011-05-12 2012-11-15 SUMIDA Components & Modules GmbH Transformator mit geblechter Wicklung
CN102791076A (zh) * 2012-08-27 2012-11-21 河南兵峰电子科技有限公司 Pcb平面变压器
WO2014062357A1 (fr) * 2012-10-17 2014-04-24 Covidien Lp Transformateurs plans dotés de pertes de terminaison réduites
EP2583288A4 (fr) * 2010-06-21 2015-07-29 Lg Innotek Co Ltd Transformateur plan
US9196414B2 (en) 2012-10-17 2015-11-24 Covidien Lp Planar transformers having reduced termination losses
US9620278B2 (en) 2014-02-19 2017-04-11 General Electric Company System and method for reducing partial discharge in high voltage planar transformers
EP3370240A4 (fr) * 2015-10-28 2019-06-26 Terra Bee Co., Ltd. Transformateur
CN110444373A (zh) * 2018-05-02 2019-11-12 联宝电子股份有限公司 磁感应组件及其制造方法
US11152146B2 (en) * 2017-11-30 2021-10-19 Premo, S.A. Annular magnetic power unit
CN113539638A (zh) * 2021-07-06 2021-10-22 辽宁意思德电气有限公司 一种大容量电感
WO2023232437A1 (fr) * 2022-05-30 2023-12-07 Valeo Eautomotive France Sas Ensemble et transformateur électrique planaire
EP4362051A1 (fr) * 2022-10-25 2024-05-01 Delta Electronics, Inc. Carte de circuit imprimé, transformateur de puissance et son procédé de fabrication

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2393695B1 (es) * 2012-11-12 2013-08-08 Premo, S.L. Transformador con inductor integrado
KR102647780B1 (ko) * 2022-06-13 2024-03-14 케이에이치필룩스 주식회사 변압 장치
KR102657251B1 (ko) * 2024-03-07 2024-04-15 주식회사 씨트로닉스 평판코일을 구비한 변압기

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4622627A (en) * 1984-02-16 1986-11-11 Theta-J Corporation Switching electrical power supply utilizing miniature inductors integrally in a PCB
EP0267822A1 (fr) * 1986-10-15 1988-05-18 Electronique Serge Dassault Transformateur haute fréquence avec enroulement en circuit imprimé, en particulier pour alimentation à très haute tension
US5317300A (en) * 1990-03-13 1994-05-31 Boesel Robert P Encapsulated high efficiency transformer and power supply
US6211767B1 (en) * 1999-05-21 2001-04-03 Rompower Inc. High power planar transformer
US6380834B1 (en) * 2000-03-01 2002-04-30 Space Systems/Loral, Inc. Planar magnetic assembly

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5010314A (en) * 1990-03-30 1991-04-23 Multisource Technology Corp. Low-profile planar transformer for use in off-line switching power supplies
US6000128A (en) * 1994-06-21 1999-12-14 Sumitomo Special Metals Co., Ltd. Process of producing a multi-layered printed-coil substrate
AT1045U1 (de) * 1995-10-03 1996-09-25 Fronius Schweissmasch Spulenkörper und verfahren zu dessen herstellung für einen transformator
DE19629067A1 (de) * 1996-07-18 1998-01-22 Rene Weiner Spulenkörper für eine Flachspule

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4622627A (en) * 1984-02-16 1986-11-11 Theta-J Corporation Switching electrical power supply utilizing miniature inductors integrally in a PCB
EP0267822A1 (fr) * 1986-10-15 1988-05-18 Electronique Serge Dassault Transformateur haute fréquence avec enroulement en circuit imprimé, en particulier pour alimentation à très haute tension
US5317300A (en) * 1990-03-13 1994-05-31 Boesel Robert P Encapsulated high efficiency transformer and power supply
US6211767B1 (en) * 1999-05-21 2001-04-03 Rompower Inc. High power planar transformer
US6380834B1 (en) * 2000-03-01 2002-04-30 Space Systems/Loral, Inc. Planar magnetic assembly

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GUNEWARDENA T.R.: "Manufacturing design considerations for planar magnetics", ELECTRICAL INSULATION CONFERENCE, 1997, AND ELECTRICAL MANUFACTURING & COIL WINDING CONFERENCE. PROCEEDINGS ROSEMONT, IL, USA 22-25 SEPT. 1997, NEW YORK, NY, USA,IEEE, US, 22 September 1997 (1997-09-22), pages 309-311, XP010265713, ISBN: 978-0-7803-3959-0 *
See also references of WO2004003947A1 *

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2230676A2 (fr) 2009-03-19 2010-09-22 TDK Corporation Composant de bobine, transformateur, unité d'alimentation électrique de commutation et procédé de fabrication du composant de bobine
EP2230676A3 (fr) * 2009-03-19 2011-08-03 TDK Corporation Composant de bobine, transformateur, unité d'alimentation électrique de commutation et procédé de fabrication du composant de bobine
US8217749B2 (en) 2009-03-19 2012-07-10 Tdk Corporation Coil component, transformer, switching power supply unit, and method for manufacturing coil component
US9401243B2 (en) 2010-06-21 2016-07-26 Lg Innotek Co., Ltd. Planar transformer
EP2583288A4 (fr) * 2010-06-21 2015-07-29 Lg Innotek Co Ltd Transformateur plan
US8441331B2 (en) 2011-03-16 2013-05-14 Delphi Technologies, Inc. Planar magnetic structure
US8516684B2 (en) 2011-03-16 2013-08-27 Delphi Technologies, Inc. Planar magnetic structure
EP2500918A1 (fr) * 2011-03-16 2012-09-19 Delphi Technologies, Inc. Structure magnétique planaire
DE102011075707A1 (de) * 2011-05-12 2012-11-15 SUMIDA Components & Modules GmbH Transformator mit geblechter Wicklung
CN102791076B (zh) * 2012-08-27 2014-09-03 河南兵峰电子科技有限公司 Pcb平面变压器
CN102791076A (zh) * 2012-08-27 2012-11-21 河南兵峰电子科技有限公司 Pcb平面变压器
US10390876B2 (en) 2012-10-17 2019-08-27 Covidien Lp Planar transformers having reduced termination losses
WO2014062357A1 (fr) * 2012-10-17 2014-04-24 Covidien Lp Transformateurs plans dotés de pertes de terminaison réduites
US9196414B2 (en) 2012-10-17 2015-11-24 Covidien Lp Planar transformers having reduced termination losses
US9449746B2 (en) 2012-10-17 2016-09-20 Covidien Lp Methods of manufacturing planar transformers
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
EP3370240A4 (fr) * 2015-10-28 2019-06-26 Terra Bee Co., Ltd. Transformateur
US11152146B2 (en) * 2017-11-30 2021-10-19 Premo, S.A. Annular magnetic power unit
CN110444373A (zh) * 2018-05-02 2019-11-12 联宝电子股份有限公司 磁感应组件及其制造方法
CN110444373B (zh) * 2018-05-02 2021-12-17 联宝电子股份有限公司 磁感应组件及其制造方法
CN113539638A (zh) * 2021-07-06 2021-10-22 辽宁意思德电气有限公司 一种大容量电感
WO2023232437A1 (fr) * 2022-05-30 2023-12-07 Valeo Eautomotive France Sas Ensemble et transformateur électrique planaire
EP4362051A1 (fr) * 2022-10-25 2024-05-01 Delta Electronics, Inc. Carte de circuit imprimé, transformateur de puissance et son procédé de fabrication

Also Published As

Publication number Publication date
EP1536436B1 (fr) 2017-01-25
ES2197830A1 (es) 2004-01-01
WO2004003947A1 (fr) 2004-01-08
ES2197830B1 (es) 2005-01-01
AU2003242793A1 (en) 2004-01-19

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