EP2067149A1 - Device for storing energy and transforming energy - Google Patents

Device for storing energy and transforming energy

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Publication number
EP2067149A1
EP2067149A1 EP07803387A EP07803387A EP2067149A1 EP 2067149 A1 EP2067149 A1 EP 2067149A1 EP 07803387 A EP07803387 A EP 07803387A EP 07803387 A EP07803387 A EP 07803387A EP 2067149 A1 EP2067149 A1 EP 2067149A1
Authority
EP
European Patent Office
Prior art keywords
core
insulation
winding
energy
peripheral
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
EP07803387A
Other languages
German (de)
French (fr)
Other versions
EP2067149B1 (en
Inventor
Werner Steinberger
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2067149A1 publication Critical patent/EP2067149A1/en
Application granted granted Critical
Publication of EP2067149B1 publication Critical patent/EP2067149B1/en
Active legal-status Critical Current
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
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/12—Ignition, e.g. for IC engines
    • 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
    • H01F38/12—Ignition, e.g. for IC engines
    • H01F2038/127—Ignition, e.g. for IC engines with magnetic circuit including permanent magnet
    • 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

Definitions

  • the present invention relates to a device for energy storage and energy transformation, in particular an ignition coil of an ignition system of a motor vehicle according to the preamble of patent claim 1.
  • ignition coils represent an energy-transmitting high voltage source and are used in operating according to the Otto principle internal combustion engines for controlling a spark plug.
  • electrical energy is converted with a comparatively low supply voltage usually from a DC electrical system in magnetic energy, which is converted to electrical energy with high voltage at a desired time at which an ignition pulse is to be delivered to the spark plug.
  • a first coil which usually represents a winding of copper wire. This creates around this coil around a magnetic field which has a certain direction and is closed in itself.
  • the previously constructed magnetic field is forced to turn by switching off the electric current, whereby in a second coil, which is spatially close to the first coil, and which has a much higher number of turns, an electrical high voltage is created.
  • the now electrical energy at the spark plug the previously established magnetic field collapses and the ignition coil discharges.
  • the second winding, high voltage, spark current and spark duration can be set as required when the internal combustion engine ignites.
  • an ignition coil which has a magnetically active I-core, which is surrounded by a first bobbin with a winding connected to the supply voltage and a second bobbin having a winding connected to a high voltage terminal , Furthermore, the device comprises a peripheral core, which encloses the two bobbin and forms a magnetic circuit with the I-core. In addition, a permanent magnet is arranged at the end of the I-shaped core.
  • DE 103 08 077 Al proposes to arrange the I-core and the peripheral core gap-free. As a result, however, the resulting by the capacitive coupling between the secondary winding and Umformkern potential of the peripheral core is reduced due to the capacitive coupling with the first bobbin.
  • the inventive device for energy storage and energy transformation with the features of claim 1 has the advantage over that a peripheral core can assume a higher potential. Furthermore, the device according to the invention has no undesirable mounting gaps or, due to tolerances of the individual components, gaps of different sizes.
  • the device according to the invention thus has a peripheral core with a high potential. This is inventively achieved in that an insulation is arranged between the I-core and the peripheral core. In particular, the insulation is provided on the longitudinal direction of the I-core lying ends. The insulation thus assumes the function of an air gap and separates the I-core from the peripheral core. Since the insulation has a defined, constant thickness, there are no problems with gap sizes of different size between the I-core and the peripheral core.
  • the device according to the invention can thus provide increased voltage requirements, for example in future spark plugs used in modern engine designs, e.g. Turbocharger, direct injection, lean concepts, candle wear, etc., find use meet.
  • the insulation further allows the I-core to experience a higher electrical capacitive charge, resulting in a reduced overall load on the device in accordance with the increased charge.
  • the first and second insulators between the I-core and the U-core are each a thin film.
  • this has the further advantage that a thickness of the film is constant, so that a defined and constant distance between the I core and peripheral core is defined.
  • the film preferably has a thickness between about 30 ⁇ m to about 100 ⁇ m, in particular about 50 ⁇ m.
  • the material of the film is preferably a plastic film, in particular a polyimide film used.
  • a plastic plate may also be used.
  • the insulation can be produced for example by spraying plastic onto the ends of the I-core. By spraying very thin insulators can be produced on the I-core.
  • the peripheral core is designed in several parts.
  • the peripheral core is composed of essentially L-shaped parts, in particular sheet metal.
  • Figure 1 is a schematic sectional view through an ignition coil according to an embodiment of the invention.
  • the ignition coil 1 shown in Figure 1 is a compact ignition coil comprising a peripheral core 2 and an I-core 3.
  • the peripheral core 2 encloses the I-core 3 and is made of a first part 2a and a second part 2b.
  • the two first and second parts 2a, 2b are substantially L-shaped.
  • the peripheral core and the I-core are made of coated sheets, for example.
  • the peripheral core 2 is further surrounded by a housing 4. - A -
  • a first bobbin 5 is arranged with a first winding 6, which is supplied with a vehicle electrical system current of a vehicle.
  • a second bobbin 7 is arranged adjacent to the first bobbin 5 and comprises a second winding 8. The number of turns of the second winding 8 is much higher than that of the first winding 6.
  • the second bobbin 7 surrounds the first bobbin. 5
  • the I-core 3 has a first end 3a and a second end 3b.
  • the second end 3b has, as shown in Figure 1, a greater width than the first end 3a.
  • a permanent magnet 9 is arranged at the second end 3b.
  • the permanent magnet 9 serves to further increase the magnetic energy.
  • a first insulation 10 is arranged on the permanent magnet 9.
  • a second insulation 11 is arranged at the first end 3 a of the I-core 3.
  • the first insulation 10 and the second insulation 11 are made of a thin film having a thickness of about 50 microns.
  • the film is a polyimide film and insulates the I-core 3 from the peripheral core 2. The thickness of the film is constant over the entire insulation surface.
  • the first insulation 10 and the second insulation 11 may be of any type, e.g. by gluing, on the permanent magnet 9 and the first end 3 a of the I-core are fixed.
  • the permanent magnet 9 is also fixed, for example, by gluing on the I-core 3.
  • the peripheral core 3 is further arranged completely isolated in the housing 4. As a result, an electrical charge of the peripheral core can be made, which is also called "floating.” Thus, the peripheral core 3 is no longer connected to the vehicle ground and charges up to a potential of a few kV, for example about 2 kV to 4 kV a "floating" circumferential core 3 is that an insulation system between high voltage-carrying components such as provided by the second bobbin 7 and the second winding 8 secondary winding and contact plates, etc., and the peripheral core 2 is relieved. Further, since insulation is provided between the circumferential core 2 and the I-core 3, there is thus no conductive connection between the peripheral core 2 and the I-core 3.
  • peripheral core 2 can assume a higher potential between about 6 kV to 8 kV, so that in comparison with the prior art
  • an isolation system to this potential difference is further relieved.
  • an optimized magnetic circuit of the ignition coil 1 can be achieved. Also occur according to the invention no problems with unwanted fluctuations of gap sizes of air gaps.

Abstract

A device for storing energy and transforming energy, e.g., an ignition coil of an ignition system of a vehicle, includes: a magnetically active I core; a first coil element which accommodates a first winding that is connected to a supply voltage; a second coil element which has a second winding that is connected to a high-voltage terminal; a peripheral core which encloses the I core, the first winding and the second winding; a permanent magnet which is situated at one end of the I core; a first insulation situated between the permanent magnet and the peripheral core; and a second insulation situated between the other end of the I core and the peripheral core.

Description

Beschreibung description
Titeltitle
Vorrichtung zur Energiespeicherung und EnergietransformierungDevice for energy storage and energy transformation
Stand der TechnikState of the art
Die vorliegende Erfindung betrifft eine Vorrichtung zur Energiespeicherung und Energietransformierung, insbesondere eine Zündspule einer Zündanlage eines Kraftfahrzeugs gemäß dem Oberbegriff des Patentanspruchs 1.The present invention relates to a device for energy storage and energy transformation, in particular an ignition coil of an ignition system of a motor vehicle according to the preamble of patent claim 1.
Vorrichtungen zur Energiespeicherung und Energietransformierung sind aus dem Stand der Technik in unterschiedlichen Ausgestaltungen bekannt und werden insbesondere als Zündspulen eingesetzt, welche eine energieübertragende Hochspannungsquelle darstellen und in nach dem Otto-Prinzip arbeitenden Brennkraftmaschinen zur Ansteuerung einer Zündkerze dienen. Bei einer derartigen Zündspule wird elektrische Energie mit einer vergleichsweise niedrigen Versorgungsspannung in der Regel aus einem Gleichspannungsbordnetz in magnetische Energie umgewandelt, welche zu einem gewünschten Zeitpunkt, zu dem ein Zündimpuls an die Zündkerze abgegeben werden soll, in elektrische Energie mit Hochspannung umgewandelt wird.Devices for energy storage and energy transformation are known from the prior art in different configurations and are used in particular as ignition coils, which represent an energy-transmitting high voltage source and are used in operating according to the Otto principle internal combustion engines for controlling a spark plug. In such an ignition coil electrical energy is converted with a comparatively low supply voltage usually from a DC electrical system in magnetic energy, which is converted to electrical energy with high voltage at a desired time at which an ignition pulse is to be delivered to the spark plug.
Zur Umwandlung von elektrischer Energie in magnetische Energie fließt der Bordnetzstrom des Kraftfahrzeugs durch eine erste Spule, welche üblicherweise eine Wicklung aus Kupferdraht darstellt. Dadurch entsteht um diese Spule herum ein Magnetfeld, welches eine bestimmte Richtung aufweist und in sich geschlossen ist. Zur Abgabe der gespeicherten elektrischen Energie in Form von Hochspannungsimpulsen wird das zuvor aufgebaute Magnetfeld durch Abschalten des elektrischen Stroms zu einer Richtungsänderung gezwungen, wodurch in einer zweiten Spule, welche sich räumlich nahe an der ersten Spule befindet, und welche eine sehr viel höhere Windungszahl aufweist, eine elektrische Hochspannung entsteht. Durch die Umsetzung der nun elektrischen Energie an der Zündkerze bricht das zuvor aufgebaute Magnetfeld zusammen und die Zündspule entlädt sich. Durch die Auslegung der zweiten Wicklung lassen sich Hochspannung, Funkenstrom und Funkendauer bei der Zündung der Brennkraftmaschine nach Bedarf festlegen. Aus der DE 103 08 007 Al ist ferner eine Zündspule bekannt, welche einen magnetisch wirksamen I-Kern aufweist, der von einem ersten Spulenkörper mit einer mit der Versorgungsspannung verbundenen Wicklung und einem zweiten Spulenkörper, der eine mit einem Hochspannungsanschluss verbundene Wicklung aufweist, umgeben ist. Ferner umfasst die Vorrichtung einen Umfangskern, welcher die beiden Spulenkörper umschließt und mit dem I-Kern einen magnetischen Kreis bildet. Darüber hinaus ist am Ende des I-förmigen Kerns ein Permanentmagnet angeordnet. Allerdings treten bei dieser bekannten Zündspule insbesondere unerwünschte Montagespalte auf. Hierzu schlägt die DE 103 08 077 Al vor, den I-Kern und den Umfangskern spaltfrei anzuordnen. Hierdurch wird jedoch das durch die kapazitive Kopplung zwischen Sekundärwicklung und Umformkern entstehende Potential des Umfangskerns aufgrund der kapazitiven Kopplung mit dem ersten Spulenkörper reduziert.For the conversion of electrical energy into magnetic energy of the vehicle electrical system current of the motor vehicle flows through a first coil, which usually represents a winding of copper wire. This creates around this coil around a magnetic field which has a certain direction and is closed in itself. For discharging the stored electric energy in the form of high-voltage pulses, the previously constructed magnetic field is forced to turn by switching off the electric current, whereby in a second coil, which is spatially close to the first coil, and which has a much higher number of turns, an electrical high voltage is created. By implementing the now electrical energy at the spark plug, the previously established magnetic field collapses and the ignition coil discharges. By designing the second winding, high voltage, spark current and spark duration can be set as required when the internal combustion engine ignites. From DE 103 08 007 Al an ignition coil is also known, which has a magnetically active I-core, which is surrounded by a first bobbin with a winding connected to the supply voltage and a second bobbin having a winding connected to a high voltage terminal , Furthermore, the device comprises a peripheral core, which encloses the two bobbin and forms a magnetic circuit with the I-core. In addition, a permanent magnet is arranged at the end of the I-shaped core. However, undesirable mounting gaps occur in particular in this known ignition coil. For this purpose, DE 103 08 077 Al proposes to arrange the I-core and the peripheral core gap-free. As a result, however, the resulting by the capacitive coupling between the secondary winding and Umformkern potential of the peripheral core is reduced due to the capacitive coupling with the first bobbin.
Vorteile der ErfindungAdvantages of the invention
Die erfindungsgemäße Vorrichtung zur Energiespeicherung und Energietransformierung mit den Merkmalen des Patentanspruchs 1 weist demgegenüber den Vorteil auf, dass ein Umfangskern ein höheres Potential annehmen kann. Ferner weist die erfindungsgemäße Vorrichtung keine unerwünschten Montagespalte bzw. aufgrund von Toleranzen der einzelnen Bauteile unterschiedlich große Spalte auf. Die erfmdungsgemäße Vorrichtung weist somit einen Umfangskern mit einem hohen Potential auf. Dies wird erfindungsgemäß dadurch erreicht, dass zwischen dem I-Kern und dem Umfangskern eine Isolation angeordnet ist. Insbesondere ist die Isolation an den Längsrichtung des I-Kerns liegenden Enden vorgesehen. Die Isolation übernimmt somit die Funktion eines Luftspalts und trennt den I-Kern von dem Umfangskern. Da die Isolation eine definierte, konstante Dicke aufweist, treten auch keine Probleme mit unterschiedlich großen Spaltabständen zwischen I-Kern und Umfangskern auf. Die erfindungsgemäße Vorrichtung kann somit erhöhte Spannungsanforderungen, beispielsweise bei zukünftigen Zündkerzen, welche in modernen Motorenkonzepten, z.B. Turbolader, Direkteinspritzer, Magerkonzepte, Kerzenverschleiß, usw., Verwendung finden, erfüllen. Durch die Isolation kann ferner der I-Kern eine höhere elektrische kapazitive Aufladung erfahren, was zu einer entsprechend der erhöhten Aufladung reduzierten Belastung einer Gesamtisolation der Vorrichtung führt.The inventive device for energy storage and energy transformation with the features of claim 1 has the advantage over that a peripheral core can assume a higher potential. Furthermore, the device according to the invention has no undesirable mounting gaps or, due to tolerances of the individual components, gaps of different sizes. The device according to the invention thus has a peripheral core with a high potential. This is inventively achieved in that an insulation is arranged between the I-core and the peripheral core. In particular, the insulation is provided on the longitudinal direction of the I-core lying ends. The insulation thus assumes the function of an air gap and separates the I-core from the peripheral core. Since the insulation has a defined, constant thickness, there are no problems with gap sizes of different size between the I-core and the peripheral core. The device according to the invention can thus provide increased voltage requirements, for example in future spark plugs used in modern engine designs, e.g. Turbocharger, direct injection, lean concepts, candle wear, etc., find use meet. The insulation further allows the I-core to experience a higher electrical capacitive charge, resulting in a reduced overall load on the device in accordance with the increased charge.
Die Unteransprüche zeigen bevorzugte Weiterbildungen der Erfindung. Vorzugsweise sind der erste und der zweite Isolator zwischen dem I-Kern und dem U-Kern jeweils eine dünne Folie. Neben einer einfachen Herstellbarkeit hat dies ferner den Vorteil, dass eine Dicke der Folie konstant ist, so dass ein definierter und konstanter Abstand zwischen I- Kern und Umfangskern definiert ist.The dependent claims show preferred developments of the invention. Preferably, the first and second insulators between the I-core and the U-core are each a thin film. In addition to easy manufacturability, this has the further advantage that a thickness of the film is constant, so that a defined and constant distance between the I core and peripheral core is defined.
Die Folie weist vorzugsweise eine Dicke zwischen ca. 30 μm bis ca. 100 μm, insbesondere ca. 50 μm auf. Als Material der Folie wird vorzugsweise eine Kunststofffolie, insbesondere eine Polyimidfolie, verwendet. Alternativ kann anstelle der Folie auch ein Kunststoffplättchen verwendet werden. Gemäß einer weiteren bevorzugten Alternative kann die Isolation beispielsweise durch Aufspritzen von Kunststoff auf die Enden des I-Kerns hergestellt werden. Durch das Aufspritzen lassen sich sehr dünne Isolatoren am I-Kern herstellen.The film preferably has a thickness between about 30 μm to about 100 μm, in particular about 50 μm. The material of the film is preferably a plastic film, in particular a polyimide film used. Alternatively, instead of the film, a plastic plate may also be used. According to a further preferred alternative, the insulation can be produced for example by spraying plastic onto the ends of the I-core. By spraying very thin insulators can be produced on the I-core.
Gemäß einer bevorzugten Ausgestaltung der Erfindung ist der Umfangskern mehrteilig ausgebildet. Besonders bevorzugt ist der Umfangskern dabei aus im Wesentlichen L-förmigen Teilen, insbesondere Blechen, aufgebaut.According to a preferred embodiment of the invention, the peripheral core is designed in several parts. Particularly preferably, the peripheral core is composed of essentially L-shaped parts, in particular sheet metal.
Zeichnungdrawing
Nachfolgend wird ein Ausführungsbeispiel der Erfindung unter Bezugnahme auf die begleitende Zeichnung beschrieben. Es zeigt:Hereinafter, an embodiment of the invention will be described with reference to the accompanying drawings. It shows:
Figur 1 eine schematisierte Schnittansicht durch eine Zündspule gemäß einem Ausführungsbeispiel der Erfindung.Figure 1 is a schematic sectional view through an ignition coil according to an embodiment of the invention.
Beschreibung der bevorzugten AusführungsformDescription of the preferred embodiment
Nachfolgend wird unter Bezugnahme auf Figur 1 eine Zündspule 1 gemäß einem Ausführungsbeispiel der Erfindung beschrieben.Hereinafter, an ignition coil 1 according to an embodiment of the invention will be described with reference to FIG.
Die in Figur 1 gezeigte Zündspule 1 ist eine Kompakt- Zündspule, umfassend einen Umfangskern 2 sowie einen I-Kern 3. Der Umfangskern 2 umschließt den I-Kern 3 und ist aus einem ersten Teil 2a und einem zweiten Teil 2b hergestellt. Die beiden ersten und zweiten Teile 2a, 2b sind im Wesentlichen L-förmig. Der Umfangskern sowie der I-Kern sind beispielsweise aus beschichteten Blechen hergestellt. Der Umfangskern 2 ist ferner von einem Gehäuse 4 umgeben. - A -The ignition coil 1 shown in Figure 1 is a compact ignition coil comprising a peripheral core 2 and an I-core 3. The peripheral core 2 encloses the I-core 3 and is made of a first part 2a and a second part 2b. The two first and second parts 2a, 2b are substantially L-shaped. The peripheral core and the I-core are made of coated sheets, for example. The peripheral core 2 is further surrounded by a housing 4. - A -
Um den I-Kern 3 ist ein erster Spulenkörper 5 mit einer ersten Wicklung 6 angeordnet, welche mit einem Bordnetzstrom eines Fahrzeugs versorgt wird. Ein zweiter Spulenkörper 7 ist benachbart zum ersten Spulenkörper 5 angeordnet und umfasst eine zweite Wicklung 8. Die Windungszahl der zweiten Wicklung 8 ist dabei sehr viel höher als die der ersten Wicklung 6. Der zweite Spulenkörper 7 umgibt dabei den ersten Spulenkörper 5.To the I-core 3, a first bobbin 5 is arranged with a first winding 6, which is supplied with a vehicle electrical system current of a vehicle. A second bobbin 7 is arranged adjacent to the first bobbin 5 and comprises a second winding 8. The number of turns of the second winding 8 is much higher than that of the first winding 6. The second bobbin 7 surrounds the first bobbin. 5
Der I-Kern 3 weist ein erstes Ende 3a und ein zweites Ende 3b auf. Das zweite Ende 3b weist, wie in Figur 1 gezeigt, eine größere Breite als das erste Ende 3 a auf. Ferner ist am zweiten Ende 3b ein Permanentmagnet 9 angeordnet. Der Permanentmagnet 9 dient zur weiteren Erhöhung der magnetischen Energie. Ferner ist am Permanentmagnet 9 eine erste Isolation 10 angeordnet. Am ersten Ende 3 a des I-Kerns 3 ist eine zweite Isolation 11 angeordnet. Die erste Isolation 10 und die zweite Isolation 11 sind aus einer dünnen Folie mit einer Dicke von ca. 50 μm hergestellt. Die Folie ist eine Polyimidfolie und isoliert den I-Kern 3 vom Umfangskern 2. Die Dicke der Folie ist dabei über die gesamte Isolationsfläche konstant. Die erste Isolation 10 und die zweite Isolation 11 können auf beliebige Art, z.B. mittels Aufkleben, am Permanentmagnet 9 und am ersten Ende 3 a des I-Kerns fixiert werden. Der Permanentmagnet 9 ist ebenfalls beispielsweise mittels Kleben am I-Kern 3 fixiert.The I-core 3 has a first end 3a and a second end 3b. The second end 3b has, as shown in Figure 1, a greater width than the first end 3a. Further, at the second end 3b, a permanent magnet 9 is arranged. The permanent magnet 9 serves to further increase the magnetic energy. Furthermore, a first insulation 10 is arranged on the permanent magnet 9. At the first end 3 a of the I-core 3, a second insulation 11 is arranged. The first insulation 10 and the second insulation 11 are made of a thin film having a thickness of about 50 microns. The film is a polyimide film and insulates the I-core 3 from the peripheral core 2. The thickness of the film is constant over the entire insulation surface. The first insulation 10 and the second insulation 11 may be of any type, e.g. by gluing, on the permanent magnet 9 and the first end 3 a of the I-core are fixed. The permanent magnet 9 is also fixed, for example, by gluing on the I-core 3.
Der Umfangskern 3 ist ferner vollständig isoliert im Gehäuse 4 angeordnet. Dadurch kann eine elektrische Aufladung des Umfangskerns erfolgen, was auch „Floaten" genannt wird. Somit ist der Umfangskern 3 nicht mehr mit der Fahrzeugmasse verbunden und lädt sich auf ein Potential von einigen kV auf, beispielsweise ca. 2 kV bis 4 kV. Der Vorteil eines „floatenden" Umfangskerns 3 liegt darin, dass ein Isolationssystem zwischen hochspannungsführenden Bauteilen wie der durch den zweiten Spulenkörper 7 und die zweite Wicklung 8 bereitgestellten Sekundärwicklung und Kontaktblechen, usw., und dem Umfangskern 2 entlastet wird. Da ferner eine Isolation zwischen dem Umfangskern 2 und dem I-Kern 3 vorgesehen ist, besteht somit keine leitende Verbindung zwischen dem Umfangskern 2 und dem I-Kern 3. Dadurch wird verhindert, dass das Potential des Umfangskerns 2 durch eine kapazitive Kopplung über den I- Kern mit der Primärwicklung reduziert wird. Somit kann der Umfangskern 2 ein höheres Potential zwischen ca. 6 kV bis 8 kV annehmen, so dass im Vergleich mit dem Stand derThe peripheral core 3 is further arranged completely isolated in the housing 4. As a result, an electrical charge of the peripheral core can be made, which is also called "floating." Thus, the peripheral core 3 is no longer connected to the vehicle ground and charges up to a potential of a few kV, for example about 2 kV to 4 kV a "floating" circumferential core 3 is that an insulation system between high voltage-carrying components such as provided by the second bobbin 7 and the second winding 8 secondary winding and contact plates, etc., and the peripheral core 2 is relieved. Further, since insulation is provided between the circumferential core 2 and the I-core 3, there is thus no conductive connection between the peripheral core 2 and the I-core 3. This prevents the potential of the peripheral core 2 from being capacitively coupled across the I-core - Core is reduced with the primary winding. Thus, the peripheral core 2 can assume a higher potential between about 6 kV to 8 kV, so that in comparison with the prior art
Technik ein Isolationssystem um diesen Potentialunterschied weiter entlastet wird. Somit kann erfindungsgemäß ein optimierter Magnetkreis der Zündspule 1 erreicht werden. Auch treten erfindungsgemäß keine Probleme mit unerwünschten Schwankungen von Spaltgrößen von Luftspalten auf. Technique an isolation system to this potential difference is further relieved. Thus, according to the invention, an optimized magnetic circuit of the ignition coil 1 can be achieved. Also occur according to the invention no problems with unwanted fluctuations of gap sizes of air gaps.

Claims

Ansprüche claims
1. Vorrichtung zur Energiespeicherung und Energietransformierung, insbesondere eine Zündspule einer Zündanlage eines Fahrzeugs, umfassend einen magnetisch wirksamen I-Kern (3), einen ersten Spulenkörper (5), welcher eine mit einer Versorgungsspannung verbundene erste Wicklung (6) aufnimmt, einen zweiten Spulenkörper (7), welcher eine mit einer Hochspannungsanschluss verbundene zweite Wicklung (8) aufweist, einen Umfangskern (2), welcher den I-Kern (3), die erste Wicklung (6) und die zweite Wicklung (8) umschließt, und einen Permanentmagneten (9), welcher an einem Ende (3b) des I-Kerns (3) angeordnet ist, dadurch gekennzeichnet, dass zwischen dem Permanentmagneten (9) und dem Umfangskern (3) eine erste Isolation (10) und zwischen dem anderen Ende (3 a) des I-Kerns und dem Umfangskern (2) eine zweite Isolation (11) angeordnet ist.1. A device for energy storage and energy transformation, in particular an ignition coil of an ignition system of a vehicle comprising a magnetically active I-core (3), a first bobbin (5) which receives a connected to a supply voltage first winding (6), a second bobbin (7) having a second winding (8) connected to a high voltage terminal, a peripheral core (2) enclosing the I-core (3), the first winding (6) and the second winding (8), and a permanent magnet (9) which is arranged at one end (3b) of the I-core (3), characterized in that between the permanent magnet (9) and the peripheral core (3) a first insulation (10) and between the other end (3 a) of the I-core and the peripheral core (2) a second insulation (11) is arranged.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Anordnung, umfassend den I-Kern (3), den Permanentmagneten (9), die erste Isolation (10), die zweite Isolation (11) und den Umfangskern (2), in Längsrichtung des I-Kerns luftspaltfrei ist.2. Apparatus according to claim 1, characterized in that the arrangement comprising the I-core (3), the permanent magnet (9), the first insulation (10), the second insulation (11) and the peripheral core (2), in Longitudinal direction of the I-core is free of air gaps.
3. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die erste Isolation (10) und/oder die zweite Isolation (11) eine dünne Folie ist.3. Device according to one of the preceding claims, characterized in that the first insulation (10) and / or the second insulation (11) is a thin film.
4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die erste Isolation (10) und/oder die zweite Isolation (11) eine Dicke von ca. 30 μm bis ca. 100 μm, insbesondere ca. 50 μm aufweist.4. Device according to one of the preceding claims, characterized in that the first insulation (10) and / or the second insulation (11) has a thickness of about 30 microns to about 100 microns, in particular about 50 microns.
5. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine Dicke der ersten Isolation (10) gleich einer Dicke der zweiten Isolation (11) ist.5. Device according to one of the preceding claims, characterized in that a thickness of the first insulation (10) is equal to a thickness of the second insulation (11).
6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Umfangskern (2) mehrteilig aus einem ersten Teil (2a) und einem zweiten Teil (2b) gebildet ist.6. Device according to one of the preceding claims, characterized in that the peripheral core (2) consists of several parts of a first part (2a) and a second part (2b) is formed.
7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass der erste und zweite Teil (2a), (2b) des Umfangskerns (2) jeweils im Wesentlichen L-förmig ausgebildet ist. 7. The device according to claim 6, characterized in that the first and second part (2a), (2b) of the peripheral core (2) are each formed substantially L-shaped.
8. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die erste Isolation (10) und die zweite Isolation (11) eine Kunststofffolie, insbesondere eine Polyimidfolie, ist.8. Device according to one of the preceding claims, characterized in that the first insulation (10) and the second insulation (11) is a plastic film, in particular a polyimide film.
9. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die erste Isolation (10) und die zweite Isolation (11) aus aufgespritztem Kunststoff hergestellt sind. 9. Device according to one of claims 1 to 7, characterized in that the first insulation (10) and the second insulation (11) are made of injected plastic.
EP07803387A 2006-09-21 2007-09-10 Device for storing energy and transforming energy Active EP2067149B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006044435A DE102006044435A1 (en) 2006-09-21 2006-09-21 Device for energy storage and energy transformation
PCT/EP2007/059484 WO2008034734A1 (en) 2006-09-21 2007-09-10 Device for storing energy and transforming energy

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EP2067149A1 true EP2067149A1 (en) 2009-06-10
EP2067149B1 EP2067149B1 (en) 2010-05-12

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US (1) US20110239999A1 (en)
EP (1) EP2067149B1 (en)
CN (1) CN101517668B (en)
AT (1) ATE467897T1 (en)
DE (2) DE102006044435A1 (en)
WO (1) WO2008034734A1 (en)

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Also Published As

Publication number Publication date
US20110239999A1 (en) 2011-10-06
CN101517668A (en) 2009-08-26
WO2008034734A1 (en) 2008-03-27
ATE467897T1 (en) 2010-05-15
DE502007003789D1 (en) 2010-06-24
DE102006044435A1 (en) 2008-03-27
EP2067149B1 (en) 2010-05-12
CN101517668B (en) 2011-11-23

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