EP1085537A2 - Transformateur planaire, procédé de fabrication de son enroulement et appareil électrique compacte comportant un tel transformateur planaire - Google Patents

Transformateur planaire, procédé de fabrication de son enroulement et appareil électrique compacte comportant un tel transformateur planaire Download PDF

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Publication number
EP1085537A2
EP1085537A2 EP00119213A EP00119213A EP1085537A2 EP 1085537 A2 EP1085537 A2 EP 1085537A2 EP 00119213 A EP00119213 A EP 00119213A EP 00119213 A EP00119213 A EP 00119213A EP 1085537 A2 EP1085537 A2 EP 1085537A2
Authority
EP
European Patent Office
Prior art keywords
electrical
folded
transformer
compact
conductor
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.)
Withdrawn
Application number
EP00119213A
Other languages
German (de)
English (en)
Other versions
EP1085537A3 (fr
Inventor
Reinhold Berberich
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.)
Siemens AG
Original Assignee
Mannesmann VDO AG
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
Priority claimed from DE10039890A external-priority patent/DE10039890A1/de
Application filed by Mannesmann VDO AG filed Critical Mannesmann VDO AG
Publication of EP1085537A2 publication Critical patent/EP1085537A2/fr
Publication of EP1085537A3 publication Critical patent/EP1085537A3/fr
Withdrawn legal-status Critical Current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
    • H01F27/2847—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
    • H01F27/2804—Printed windings
    • 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
    • H01F41/061—Winding flat conductive wires or sheets
    • H01F41/063—Winding flat conductive wires or sheets with insulation
    • 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
    • H01F2027/2861—Coil formed by folding a blank

Definitions

  • the invention relates to a planar transformer and a method for Manufacturing the winding of the planar transformer and a compact electrical device with such a planar transformer according to the respective preambles of claims 1, 6 and 10.
  • the invention has for its object a planar transformer indicate which one with any number of turns simple and is inexpensive to manufacture.
  • the object is achieved in that the primary and the secondary winding each from a folded, a non-circular Cross-section, electrical conductor exists.
  • the advantage of the invention is that the winding is not as before by stacking windings with subsequent connection of the individual parts, but by folding a finite one electrical conductor. The process of connecting individual sheets to form a closed winding.
  • the winding is either manufactured from Metal strips (rolled goods) or from specially shaped sheet metal stampings.
  • the use of metal straps creates a winding which spread apart due to the elastic properties of the metal, which prevents electrical contacting of the individual windings becomes.
  • Shaped sheet metal stampings make it particularly easy Realize tapping.
  • At least one is parallel to the electrical conductor Insulating layer available, which in one operation with the electrical Ladder is folded.
  • Such an insulating layer has the advantage that in addition to the electrical insulation immediately a mechanically stable bond between several winding layers is created.
  • the insulating layer is self-adhesive to fix the electrical conductor educated.
  • transformer arrangements in which special emphasis is placed on a extremely good coupling, there are at least two metal strips arranged together on an insulating layer and are simultaneously folded. Through the intimate nesting of at least two at the same time applied turns improves the coupling among the Turns again.
  • the two windings can be on both sides of the Insulation layer, but alternatively also on one of the surface of the insulation layer spaced apart.
  • the loose end of the metal strip is formed electrical conductor by a first predetermined distance predetermined first angle folded in one direction and then after a second predetermined distance by a second predetermined Angle in the opposite direction to the given one Folded towards. This process is repeated until one desired number of turns is reached.
  • the electrical conductor is at a predetermined angle alternately in a given direction or in the given direction Folded in the opposite direction.
  • a compact electrical Device in particular a switching power supply proposed, with a Transformer for matching different electrical voltages between an electrical circuit and one with a reference voltage connectable contacting device, at least one primary winding of the transformer with the contacting device and at least a secondary winding of the transformer with the electrical circuit are connected via first electrical connections, the primary and the secondary winding has at least part of the transformer core encloses.
  • the primary and the secondary winding each made from a folded electrical conductor, which one has non-circular cross-section.
  • the primary and the secondary winding and / or are advantageously first electrical connections and / or the contacting device in a support body made of insulating material is arranged, and the electrical circuit is arranged on a carrier element via a second electrical connection with at least a first one electrical connection of the carrier body connected.
  • the advantage of the invention is that the individual components Plugs, power supply / distribution and the transformer windings or the transformer core together in a compact unit are arranged.
  • Such an electronic block contains all the necessary ones electrical traces, either by temporary spacers or real insulation layers or layers kept isolated from each other and then overmolded with plastic.
  • the work steps will hereby improve the electrical Insulation properties achieved.
  • this is Compact electronics shockproof and vibration-insensitive, which in particular is advantageous for use in motor vehicles.
  • At least one contact pin is on the plane Carrier element for connecting the electrical circuit with at least a first electrical connection of the carrier body, which is electrically connected to the at least one conductor track Opening protrudes.
  • This arrangement of the rigid pin makes the electrical connection between the electrical circuit and the electrically conductive parts of the carrier body simply by plugging the carrier body onto the Contact pin realized, which at the same time creates a mechanical lock is achieved.
  • This second electrical connection is particularly easy to establish, when the contact pin for making the electrical connection in the opening of the carrier body is pressed. So not only the electrical, but also a permanent mechanical connection produce which is insensitive to vibrations.
  • the first electrical connections are particularly easy produce if they are formed as sheet metal parts. With the help of such stacked stamped and bent sheet metal, which the electrical Form conductor tracks in the carrier body, the carrier body can be easily manufacture as an injection molded part.
  • Angled ends of the sheet metal parts are advantageously made of Carrier body for forming the electrical connections of the plug device led out.
  • the body of the contacting device is through formed the support body.
  • the compact electrical block can be molded in the same plastic design such that the carrier body is part of a housing, which covers the carrier element carrying the electrical circuit.
  • the carrier body is a middle part of the housing with a gasket molded on one side to rest on the support element formed, the housing middle part with a flat cover is closed, which also has a molded seal, which rests on the middle part of the housing.
  • the carrier element is made of metal, preferably made of aluminum, and is also used for cooling the power components of the electronic circuit.
  • the carrier element is a substrate which is made of copper sheet welded onto heat-conducting ceramic (Direct Copper Bonding) exists. Due to the very good heat conduction of this material are high performance of the power transistors enables.
  • the Transformer core is constructed in two parts, with a first E-like Core element rests on the carrier element, the three of which are perpendicular to the Carrier element pioneering webs through corresponding transformer openings grab the support body and a second flat or E-like trained core element covers the webs and magnetically connects with each other, with the primary and secondary winding rotating are arranged between the webs.
  • the transformer By resting the first core element on the as a heat sink trained carrier element is the transformer with high performance operable and can have a high efficiency.
  • the transformer works reliably with those in modern motor vehicles occurring high currents and can be easily cooled.
  • a switching power supply is shown as it is used to adapt different voltage levels in numerous electrical devices Used.
  • a carrier body 1 made of plastic includes several superimposed conductor tracks 2, which as Stamped bending sheets are formed.
  • the conductor tracks 2 are like this arranged within the plastic carrier body 1 that the plastic between the conductor tracks 2 has an insulating effect.
  • the Carrier body 1 windings 3a, 3b which are a primary and a secondary winding form a planar transformer.
  • the primary 3a and the secondary winding 3b is formed by at least one turn.
  • Some conductor tracks 2 are bent out of the plastic carrier body 1 led out, the ends of which form connector pins 4 and the plastic carrier body 1 at the same time by one in an injection molding process made molding forms the plug body 5.
  • the plastic body 1 has metallized and with the Conductor tracks 2 connected contact openings 6 and 7, in which Contact pins 12 engage on an aluminum support element 8 are arranged.
  • a ceramic circuit board 9 is on the carrier element 8 attached, which has copper tracks 10.
  • the ceramic circuit board 9 is glued to the aluminum body 8, for example.
  • the copper tracks 10 establish an electrical connection between the also the printed circuit board 9 arranged power components 11 and Contact pin 12. Furthermore, that is on the aluminum support member 8 Lower part 13 of a planar transformer core arranged.
  • the Pins 12 of the aluminum plate 8 in the contact openings 6 and 7 respectively of the carrier body 1 introduced. This takes place in a press-in process, that is, the diameter of the contact openings 6 and 7 is less than the thickness of the contact pins 12, so that after pressing in the contact pins a both secure mechanical and electrical connection of the contact pin 12 with the windings of the primary and secondary coils 3a, 3b of the transformer and with the conductor tracks 2.
  • the windings 3a, 3b are in the Lower part 13 of the transformer core open at the top.
  • the bottom part 13 has three webs pointing in the direction of the plastic body 1 13a, 13b, 13, c, with the winding 3a, 3b in the spaces 26, 27 of these webs 13a, 13b, 13c is arranged ( Figure 3).
  • Figure 3 After touchdown of the plastic carrier body 1 on the circuit board 8 is the upper part 14 of the transformer core placed on the plastic body 1. Consequently after connecting the reference voltage to the plug device 4, 5 voltage transformed by the so-called planar transformer transferred to the power components 11 via the contact pins 12.
  • Control and regulating electronics 25 as a component on the substrate 9 be arranged.
  • Another is for use in the motor vehicle Plug device 28 is provided, via which this electronics via the CAN bus communicates with other control units.
  • FIG. 2 shows an embodiment of the compact electronics that is particularly favorable in terms of production technology.
  • a seal 20, which rests on the aluminum plate 8, is arranged all around on the collar 19.
  • the edge of the cover 22 also carries a seal 23 on which the plastic carrier body 1 rests. Possible sealing problems when connecting to the base plate are avoided by the molded sealing lip.
  • a device for producing an electrical conductor 15 folded winding package 18 is shown in Figure 4.
  • One on a gimbaled roller 16 arranged copper tape 15 guided over a folding and separating device 17.
  • the folding and separating device 17 folds the copper tape by 180 ° in such a way that it Degree from the actual direction of extension of the copper strip 15 is deflected so that after four folds a rectangle-like Winding arises.
  • the folded end of the electrical conductor 15 lies supposedly on the surface of the metal strip 15.
  • a roller conveyor counter is used to determine the length of the sections to be moved intended.
  • Figure 6 shows a copper tape roll 16 and a roll, which one Insulator or a double-sided tape leads.
  • Roll 24 with the double-sided tape 28 is arranged behind the roller 16 with the copper tape. If the double-sided adhesive tape 29 passes the copper roll, the electrical one Conductor 15 automatically on the self-adhesive surface of the double-sided tape 29 attached and the resulting band 30 is also in folded the way already described.
  • FIG. 7 Preferred embodiments of the folding for the device according to Figures 5 and 6 are shown in Figure 7. It must always be ensured that when folding insulator on insulator and electrical conductor on electrical conductor to prevent insulation in the wrong place.
  • the conductor 15 is simply folded in the simplest manner alternating by 90 ° or - 90 °. With multiple folding it happens for stacking several folds. With a more comfortable one Embodiment according to example B is a double kink when folding the fold, in such a way that the resulting kinks are offset, which achieves a good packing density.
  • FIG. 8 shows a stamped and bent part 31 with a shaped center tap 32 shown. The folded edges 33 are also indicated. At this stamped and bent part 31 is simply three electrical connections realize. The electrical connections are with a and c and the Center tap marked with b.
EP00119213A 1999-09-14 2000-09-06 Transformateur planaire, procédé de fabrication de son enroulement et appareil électrique compacte comportant un tel transformateur planaire Withdrawn EP1085537A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19944072 1999-09-14
DE19944072 1999-09-14
DE10039890 2000-08-16
DE10039890A DE10039890A1 (de) 1999-09-14 2000-08-16 Planartransformator und Verfahren zur Herstellung seiner Wicklung sowie eine kompakte elektrische Vorrichtung mit einem solchen Planartransformator

Publications (2)

Publication Number Publication Date
EP1085537A2 true EP1085537A2 (fr) 2001-03-21
EP1085537A3 EP1085537A3 (fr) 2001-04-11

Family

ID=26006706

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00119213A Withdrawn EP1085537A3 (fr) 1999-09-14 2000-09-06 Transformateur planaire, procédé de fabrication de son enroulement et appareil électrique compacte comportant un tel transformateur planaire

Country Status (2)

Country Link
EP (1) EP1085537A3 (fr)
JP (1) JP2001126933A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2251959A1 (fr) * 2009-05-15 2010-11-17 Electric Drive Technology AG Groupe de bobines électriques et procédé de production de ce groupe de bobines
EP2863402A1 (fr) * 2013-10-18 2015-04-22 ABB Technology AG Enroulement de bande pour transformateurs haute tension
US9620278B2 (en) 2014-02-19 2017-04-11 General Electric Company System and method for reducing partial discharge in high voltage planar transformers

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011009433A (ja) * 2009-06-25 2011-01-13 Fuji Electric Systems Co Ltd エッジワイズ巻き磁気部品
CN102403419B (zh) * 2011-11-09 2013-08-21 东莞勤上光电股份有限公司 一种大功率led散热结构的制作工艺
CN103077808B (zh) * 2013-02-01 2014-03-05 明珠电气有限公司 一种用于核电站的1e级干式变压器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5274904A (en) * 1991-08-07 1994-01-04 Grumman Aerospace Corporation Guideway coil of laminated foil construction for magnetically levitated transportation system
EP0601791A1 (fr) * 1992-12-11 1994-06-15 AT&T Corp. Composant à puissance magnétique monté en surface et procédé pour le fabriquer
GB2294593A (en) * 1994-10-26 1996-05-01 Whitaker Corp Electrical winding and method of making the same
EP0735551A1 (fr) * 1995-03-29 1996-10-02 Valeo Electronique Assemblage de transformateur, notamment pour un dispositf d'alimentation de lampe à décharge de projecteur de véhicule automobile
EP0741396A1 (fr) * 1995-05-04 1996-11-06 AT&T IPM Corp. Dispositif à puissance magnétique utilisant une connexion sans fils à une carte de circuit imprimé et sa méthode de fabrication

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5936411B2 (ja) * 1980-01-31 1984-09-04 株式会社明電舎 箔巻線の製造装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5274904A (en) * 1991-08-07 1994-01-04 Grumman Aerospace Corporation Guideway coil of laminated foil construction for magnetically levitated transportation system
EP0601791A1 (fr) * 1992-12-11 1994-06-15 AT&T Corp. Composant à puissance magnétique monté en surface et procédé pour le fabriquer
GB2294593A (en) * 1994-10-26 1996-05-01 Whitaker Corp Electrical winding and method of making the same
EP0735551A1 (fr) * 1995-03-29 1996-10-02 Valeo Electronique Assemblage de transformateur, notamment pour un dispositf d'alimentation de lampe à décharge de projecteur de véhicule automobile
EP0741396A1 (fr) * 1995-05-04 1996-11-06 AT&T IPM Corp. Dispositif à puissance magnétique utilisant une connexion sans fils à une carte de circuit imprimé et sa méthode de fabrication

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 005, no. 181 (E-083), 20. November 1981 (1981-11-20) & JP 56 108224 A (MEIDENSHA ELECTRIC MFG CO LTD), 27. August 1981 (1981-08-27) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2251959A1 (fr) * 2009-05-15 2010-11-17 Electric Drive Technology AG Groupe de bobines électriques et procédé de production de ce groupe de bobines
WO2010130318A1 (fr) * 2009-05-15 2010-11-18 Electric Drive Technology Ag Groupe de bobines électriques et procédé de production dudit groupe de bobines
EP2863402A1 (fr) * 2013-10-18 2015-04-22 ABB Technology AG Enroulement de bande pour transformateurs haute tension
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
JP2001126933A (ja) 2001-05-11
EP1085537A3 (fr) 2001-04-11

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