EP2274755A1 - Dispositif a bobines - Google Patents

Dispositif a bobines

Info

Publication number
EP2274755A1
EP2274755A1 EP09729991A EP09729991A EP2274755A1 EP 2274755 A1 EP2274755 A1 EP 2274755A1 EP 09729991 A EP09729991 A EP 09729991A EP 09729991 A EP09729991 A EP 09729991A EP 2274755 A1 EP2274755 A1 EP 2274755A1
Authority
EP
European Patent Office
Prior art keywords
conductor loops
coil arrangement
arrangement according
conductor
dielectric
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Withdrawn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
EP09729991A
Other languages
German (de)
English (en)
Inventor
Andreas SCHÖNECKER
Detlef H. Schenk
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.)
Hydrotech International Ltd
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Hydrotech International Ltd
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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 Hydrotech International Ltd, Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Hydrotech International Ltd
Publication of EP2274755A1 publication Critical patent/EP2274755A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H01F38/14—Inductive couplings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/0006—Printed inductances
    • 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
    • H01F38/14—Inductive couplings
    • H01F2038/146—Inductive couplings in combination with capacitive coupling

Definitions

  • connection of the coils to an external voltage source happens at both ends of the windings.
  • Possible layouts for planar coils are shown in Figures 9 and 10.
  • the lead out of the inner conductor is complex and prone to failure in a planar design.
  • Connection via a bonding wire (FIG. 9) requires additional technological effort.
  • Bridge pressure ( Figure 10) requires an additional insulating layer.
  • Coils are operated in a known manner with DC and AC.
  • an electrical see alternating field results from the coil inductance L of the known constructions an inductive reactance X L , whose size increases linearly with the frequency.
  • the current is therefore reduced.
  • the generated magnetic induction B decreases.
  • the decrease in magnetic induction with increasing frequency at a given voltage is a general disadvantage of known magnetic coils.
  • the invention has for its object to provide a coil assembly which has a high efficiency and high magnetic induction at the desired frequency use and generates a sufficiently large magnetic field even at high frequencies (> 1 kHZ). Furthermore, it is necessary to specify designs which can be realized in planar technology in a simple manner.
  • the invention relates to an arrangement of magnetic coils of increased effectiveness.
  • at least two mutually associated conductor loops are designed as double conductors, which are galvanically separated from one another, but are capacitively coupled according to their arrangement, ie between the first and second conductor loops of the associated conductor loops, which are arranged alternately to one another or nested generates an electric field.
  • the current is coupled in a conductor loop and coupled out of the other associated conductor loop, wherein the ends of the conductor loops, which have no connections for the coupling or decoupling, are open or formed as a free end. Under “open” is understood that the ends are not connected to electrical components, terminals or electronic lines, but the turns or conductor loops open ends.
  • This arrangement has a natural resonant frequency at which the reactance largely disappears and the total resistance reaches a minimum, which is determined by the ohmic resistance of the conductor loops. At a given voltage, the current reaches a maximum value. Accordingly, the generated magnetic field strength also becomes maximum.
  • the technical implementation can be carried out in an advantageous manner by applying technologies of construction and connection technology, polymer electronics and ceramic multilayer technology.
  • the magnet coil arrangement is designed in planar design on a plane in concentric arrangement of the associated conductor loops or double conductors and / or of a plurality of superimposed planes in each case in superposition of the conductor loops or double conductors.
  • several associated conductor loops can be provided concentrically and alternately to each other in the respective levels.
  • the conductor loops are separated by a dielectric.
  • the respectively assigned conductor loops are embodied in an electrically insulated manner by the substrate material and / or the dielectric both in the single-plane arrangement and in the stack arrangement of the planes, wherein the associated conductor loops, which of course can also have several turns, can be formed as separate magnetic coils being stacked. Due to the concentric and / or superimposed, preferably congruent superimposed arrangement of the associated conductor loops takes place a superposition and thus an amplification of the individual magnetic fields.
  • the conductor loops are arranged around a core of magnetic material, wherein the material ferrite but also polymer-bound magnetic Materials can be.
  • a high permeability should be selected and the dielectric should have a high dielectric constant. This facilitates, among other things, miniaturization.
  • transformer or transformer for use as a current and voltage converter, transformer or transformer two arrangements of at least two associated conductor loops, each with a connection for the power supply or for
  • the associated conductor loops of the two arrangements have different turns corresponding to the desired transmission ratio.
  • FIG. 1 shows a magnetic coil arrangement according to a first embodiment on a plane in a plan view
  • FIG. 2 shows the magnet coil arrangement on a plane corresponding to FIG. 1 in a side view
  • FIG. 3 shows a magnetic coil arrangement according to a second exemplary embodiment on a plane with multiple or multiple printed conductors in a plan view
  • FIG. 4 shows the magnetic coil arrangement according to FIG. 3 a plane with multiple or multiple tracks in a side view
  • FIG. 5 shows a side view of a magnet coil arrangement according to a third exemplary embodiment with several levels, where on one level only the conductor tracks 1 and 2 are located and they are through-contacted from plane to plane.
  • FIG. 6 shows the magnetic coil arrangement according to FIG. 5 with several levels in a perspective and schematic top view
  • FIG. 7 shows a coil arrangement current and voltage transformers, each with two associated conductor loops in a perspective plan view
  • a solenoid assembly in planar design is shown in plan view.
  • the magnetic coil arrangement consists in the embodiment of two associated conductor loops 1 and 2, which are each connected to a terminal pad 3 and 4 for coupling or decoupling an electric current.
  • the conductor loops 1 and 2 form a double conductor or double conductor tracks. They are applied to an insulating substrate 5 by known planar techniques.
  • the conductor loops 1, 2 are completely covered with a capacitive layer or a dielectric 6.
  • the ends of the conductor loops which are not connected to the connection pads 3, 4 are open, ie they end without any further connection possibility.
  • the core may also be made of other suitable materials capable of establishing a magnetic field and operating in each frequency range.
  • FIG. 2 the coil assembly of FIG. 1 is shown in section.
  • FIG. 3 shows in FIG. 1, wherein the magnetic coil arrangement is designed in a concentric configuration, ie the double conductors consisting of the mutually associated conductor loops 1 and 2 are connected in parallel to conductor loops 1 'and 2' and executed radially alternately.
  • the arrangement is exemplary.
  • the defined magnetic power further double conductors with the conductor loops 1, 2, I 1 , 2 ', as described above, placed on one and the same plane, wherein the terminal ends are connected in parallel with the connection pads 3, 4.
  • the capacitive layer ie the dielectric 6, preferably the interconnects 1, 2, I 1 , 2 1 , as can be seen in the section of FIG. 4, completely embedded in the dielectric.
  • FIG. 5 and 6 is an embodiment of this in which the coil assembly of FIG. 1 is used.
  • Several coil arrangements or units 9 according to FIGS. 1 and 2 are stacked or stacked in different planes, on which the double conductors with the conductor loops 1, 2, which are separated by the dielectric and optionally a capacitive layer 8, are located.
  • the various coil units 9 can also be provided at a distance (instead of the layer 8) from one another, but they can also lie directly above one another.
  • connection pads 3, 4 are also in each case parallel to each other, via which the circuit is closed.
  • the number of levels depends on the defined magnetic field strength, which must be generated for each application.
  • FIG. 6 shows a greater distance between the coil arrangements 9, this being provided only for clarity of drawing, the coil units can be stacked one above the other with and without spacings.
  • the magnetic coil arrangement consists, as already stated, of a double conductor with the arranged conductor loop 1 and 2 (FIG. 1, 2) or a plurality of double conductors, the conductor loops each being connected to the same terminal polarity (FIGS. 3, 4).
  • the conductor loops 1, 2 are separated from each other by the capacitive layer or the dielectric. Between the conductor loops 1, 2 with different polarity of the current flows at low frequency to high frequency, depending on the specified application.
  • the number of associated conductor loops 1, 2, which can also be implemented in several turns, depends on the application case and the target value of the magnetic induction.
  • the Arrangement of the conductor tracks according to FIG. 4 takes place parallel to the surface in succession on a plane, specifically in such a way that a conductor loop is electrically separated from one another by an insulating substrate and / or a dielectric layer.
  • the current input coupling and current output coupling are respectively connected to the first and the second of the associated conductor leads 1 and 2, but all the first conductor loops and all the second conductor loops are viewed from the phase terminal in the concentric magnet coil arrangement and in FIG the multilayer magnet coil assembly connected in parallel.
  • a current and voltage converter 10 is shown with the previously described magnetic coil assemblies in the same arrangement as Figs. 1 to 6, but with the proviso that there is no via between the levels.
  • the solenoid assembly 1 of the lower level shows the current input Ul and II, wherein the associated conductor loops 1, 2 are also separated from each other galvanically and capacitively.
  • the output with voltage U 2 and current 12 is connected to the technical connections.
  • the current and voltage conversion is realized in the capacitive range, ie the electrical resistances (reactances) are also very low.
  • the input level can be provided in accordance with the technical and / or electrical specifications with a plurality of double conductors, which in turn are connected in parallel with each other.
  • the transmission ratio is 1: 1 because the first and second level arrangements are identical.
  • the number of associated conductor loops and / or the turns of the associated conductor loops of the magnet coil assemblies 11 and 12 are selected differently.
  • the magnet coil arrangement according to the invention can be used in a wide variety of fields, for example for mini-motors, miniature electromagnets, drive systems and acoustic converters and their use in nanoelectronics and microelectronics. Furthermore, it can be used as a magnetic field source, as a filter and sensors and used in ceramic multilayer technology and polymer electronics.
  • a magnet coil according to the invention is produced in a two-level arrangement.
  • the two levels are separated by a dielectric layer.
  • a planar coil of right-handed Cu shape is deposited on an aluminum support substrate by screen printing and subsequent burn-in.
  • the spiral is provided at one end with a connection pad for further contacting.
  • a dielectric paste is printed on the Cu rectangular spiral and then baked.
  • a second Cu rectangular coil is applied to the dielectric layer by screen printing and firing. This also has a connection pad.
  • This second rectangular spiral coil is congruent with the first rectangular spiral coil, with the exception of the connection pads, which remain exposed for soldering the leads exposed.
  • the coil according to the invention flows at the operating frequency 177 kHz and a drive voltage of 1 V, a current of 0.3 A. This value is greater by a factor of 10 compared to a coil of the same geometry according to the prior art. Thus, according to the invention, at the same time a higher by a factor of 10 magnetic induction can be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

L’invention concerne un dispositif à bobines (9) pour générer des champs magnétiques alternatifs avec au moins deux boucles conductrices associées l’une à l’autre (1, 2) et séparées galvaniquement, mais couplées de manière capacitive. La première boucle conductrice (1) présente un raccord (3) destiné à l’alimentation en courant et la deuxième boucle conductrice (2) présente un raccord (4) destiné à l’évacuation du courant. Les extrémités, respectivement opposées aux raccords, des boucles conductrices associées (1, 2) sont ouvertes. Le dispositif à bobines (9) est de préférence réalisé selon une configuration plane.
EP09729991A 2008-04-08 2009-04-08 Dispositif a bobines Withdrawn EP2274755A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810017762 DE102008017762A1 (de) 2008-04-08 2008-04-08 Magnetspule zur Generierung magnetischer Wechselfelder mit geringem Blindwiderstand in Planardesign, herstellbar durch Anwendung von Verfahren der Schichttechnologie sowie als Magnetfeldquelle, Strom- und Spannungswandler, Übertrager oder Transformator
PCT/EP2009/002775 WO2009124783A1 (fr) 2008-04-08 2009-04-08 Dispositif à bobines

Publications (1)

Publication Number Publication Date
EP2274755A1 true EP2274755A1 (fr) 2011-01-19

Family

ID=40677504

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09729991A Withdrawn EP2274755A1 (fr) 2008-04-08 2009-04-08 Dispositif a bobines

Country Status (3)

Country Link
EP (1) EP2274755A1 (fr)
DE (1) DE102008017762A1 (fr)
WO (1) WO2009124783A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102314999B (zh) * 2010-07-08 2013-12-04 晨星软件研发(深圳)有限公司 变压器
DE102013205481A1 (de) * 2013-03-27 2014-10-02 Siemens Aktiengesellschaft Vorrichtung zur drahtlosen, induktiven Energieübertragung auf einen Empfänger
EP2838115A1 (fr) * 2013-08-16 2015-02-18 Siemens Aktiengesellschaft Circuit intégré
CN105655104B (zh) * 2016-03-25 2018-05-08 江苏苏净集团有限公司 一种平面螺旋电磁线圈

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE950138C (de) * 1952-02-14 1956-10-04 Willem Smit U Co S Transformat Transformatorwicklung
GB1440304A (en) * 1974-11-29 1976-06-23 Mullard Ltd Transmission line pulse transformers
KR890004585B1 (ko) * 1980-09-11 1989-11-16 아사히가세이고교가부시키가이샤 마이크로코일(microcoil)
CA2072277A1 (fr) * 1991-07-03 1993-01-04 Nobuo Shiga Element inductif
KR100476920B1 (ko) * 1996-12-30 2005-05-16 코닌클리즈케 필립스 일렉트로닉스 엔.브이. 기판상에집적화된코일을포함하는장치
DE19741302A1 (de) * 1997-09-19 1999-03-25 Inst Halbleiterphysik Gmbh Geometrie für planare Induktivitäten
US6054914A (en) * 1998-07-06 2000-04-25 Midcom, Inc. Multi-layer transformer having electrical connection in a magnetic core
US6661079B1 (en) * 2002-02-20 2003-12-09 National Semiconductor Corporation Semiconductor-based spiral capacitor
US6960968B2 (en) * 2002-06-26 2005-11-01 Koninklijke Philips Electronics N.V. Planar resonator for wireless power transfer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009124783A1 *

Also Published As

Publication number Publication date
WO2009124783A1 (fr) 2009-10-15
DE102008017762A1 (de) 2009-10-29

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