EP0933975B1 - Arrangement of two ignition transformers - Google Patents
Arrangement of two ignition transformers Download PDFInfo
- Publication number
- EP0933975B1 EP0933975B1 EP99101907A EP99101907A EP0933975B1 EP 0933975 B1 EP0933975 B1 EP 0933975B1 EP 99101907 A EP99101907 A EP 99101907A EP 99101907 A EP99101907 A EP 99101907A EP 0933975 B1 EP0933975 B1 EP 0933975B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- winding
- secondary winding
- soft magnetic
- ignition
- arrangement according
- 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.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/02—Details
- H05B41/04—Starting switches
- H05B41/042—Starting switches using semiconductor devices
-
- 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
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/12—Ignition, e.g. for IC engines
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/02—Details
- H05B41/04—Starting switches
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Coils Of Transformers For General Uses (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
Description
Die Erfindung betrifft eine Anordnung von zwei Zündtransformatoren für Impulszündgeräte für Hochdruckgasentladungslampen in Kraftfahrzeugen zur Erzeugung einer Zündspannung, die der Leerlaufspannung eines Lampenvorschaltgerätes überlagert ist, wobei die Zündtransformatoren derart verschaltet sind, daß sich die sekundärseitigen Zündspannungen addieren.The invention relates to an arrangement of two ignition transformers for Pulse igniters for high pressure gas discharge lamps in motor vehicles Generation of an ignition voltage that corresponds to the open circuit voltage of a Lamp ballast is superimposed, the ignition transformers such are connected so that the secondary ignition voltages add up.
Eine Anordnung von zwei Zündtransformatoren, die derart verschaltet sind, daß sich die sekundärseitigen Zündspannungen addieren ist aus der EP 0 331 840 A1 bekannt.An arrangement of two ignition transformers, which are connected in such a way that the ignition voltages on the secondary side are from EP 0 331 840 A1 known.
Die DE 195 21 070 A1 offenbart einen Zündtransformator für ein Überlagerungszündgerät zum Zünden einer Halogen-Dampflampe mit einer Sekundärwicklung, die einlagig auf einen Ferritkern gewickelt ist und einer Primärwicklung, die aus zwei U-förmigen Kupferdrähten besteht und elektrisch von der Sekundärwicklung isoliert angeordnet ist.DE 195 21 070 A1 discloses an ignition transformer for a Superimposed ignitor for igniting a halogen vapor lamp with a Secondary winding, which is wound in one layer on a ferrite core and one Primary winding, which consists of two U-shaped copper wires and is electrically powered by the secondary winding is arranged insulated.
Aus den Patent Abstracts of Japan vol. 18, no 545 (E-1617), 18/10/94 & JP-A- 06 196336 ist ein Hochspannungstransformator bekannt, bei dem die Primär- und die Sekundärwicklung auf ineinander verschachtelten Kernen angeordnet und die Primärspule aus mehreren parallelgeschalteten Wicklungen besteht.From the Patent Abstracts of Japan vol. 18, no 545 (E-1617), 18/10/94 & JP-A-06 196336 a high voltage transformer is known in which the primary and the Secondary winding arranged on nested cores and the Primary coil consists of several windings connected in parallel.
Zur Zündung von kraftfahrzeugtypischen Hochdruckgasentladungslampen (z. B. der D2-Lampe von Philips) werden Spannungen von U > 23 kV benötigt, die durch Zündtransformatoren erzeugt werden.For the ignition of high pressure gas discharge lamps typical of motor vehicles (e.g. the D2 lamp from Philips) voltages of U> 23 kV are required, which are caused by Ignition transformers are generated.
Aus der DE 41 17 288 A1 ist ein Zündübertrager auf einem Stabkern und mit einem Folienwickel bekannt. Bei einer anderen möglichen Bauform eines Zündtransformators ist die Sekundärwicklung als Drahtwickel in voneinander isolierten Kammern angeordnet. From DE 41 17 288 A1 is an ignition transformer on a rod core and with one Film wrap known. With another possible design one Ignition transformer is the secondary winding as a wire winding in each other insulated chambers arranged.
Um die Hochspannungsfestigkeit solcher Zündtransformatoren zu gewährleisten, sind diese zumindest zu vergießen. Bei den kammergewickelten Zündtransformatoren ist überdies die Isolierung zwischen dem Wickel einer Kammer und den zugehörigen Wickelzuführungen erforderlich, die nur sehr aufwendig realisierbar ist.To ensure the high voltage strength of such ignition transformers, are at least to be shed. With the chamber-wound Ignition transformers are also the insulation between the winding of a chamber and the associated winding feeds required, which is only very complex is feasible.
Damit sind bekannte Zündtransformatoren relativ aufwendig aufgebaut und damit auch kostenaufwendig und zum Teil zudem recht großbauend.Known ignition transformers are thus constructed in a relatively complex manner and thus also expensive and partly also quite large.
Nachteilig ist weiterhin, daß zur Unterdrückung von hochfrequenten Störimpulsen, welche die Hochdruckgasentladungslampe erzeugt, zusätzliche Mittel zur funktechnischen Entstörung vorgesehen werden müssen, die ebenfalls einen gewissen Einbauraum erfordern und Kosten verursachen.Another disadvantage is that in order to suppress high-frequency interference pulses, which generates the high pressure gas discharge lamp, additional means for radio interference suppression must be provided, which is also a require certain installation space and incur costs.
Da Einbauraum sowie Kosten im Kraftfahrzeugbau ganz besonders kritische Größen sind, ist es daher die Aufgabe der Erfindung, einen Zündtransformator zu schaffen, der besonders einfach, kostengünstig und kleinbauend ausführbar ist und der zusätzliche funktechnische Entstörmittel so weit wie möglich entbehrlich macht.Because installation space and costs in motor vehicle construction are particularly critical sizes it is therefore the object of the invention to provide an ignition transformer which is particularly simple, inexpensive and small in size and which makes additional radio interference suppression as unnecessary as possible.
Diese Aufgabe wird erfindungsgemäß durch die Merkmalkombination des Anspruches 1 gelöst.This object is achieved by the combination of features of Claim 1 solved.
Die erfindungsgemäße Anordnung ist damit sehr einfach aufgebaut und kostengünstig herstellbar. Aufwendige Isolations- und Vergußmaßnahmen der Zündtransformatoren sind nicht erforderlich, da jeder Zündtransformator nur die halbe Zündspannung erzeugt. Dieses wird dadurch ausgeglichen, daß (mindestens) zwei Zündtransformatoren so miteinander verschaltet sind, daß sich deren sekundärseitig erzeugte Zündspannungen addieren.The arrangement according to the invention is thus very simple and inexpensive to manufacture. Elaborate isolation and potting measures of the Ignition transformers are not required as each ignition transformer is only the half ignition voltage generated. This is compensated for by the fact that (at least) two ignition transformers are interconnected so that their Add ignition voltages generated on the secondary side.
Besonders vorteilhaft ist auch, daß der Isolationsaufwand jedes Zündtransformators ganz besonders gering ist, da sich dieser überproportional mit der Abnahme der Sekundärspannung verringert. Ausreichend ist, einen einfachen Schrumpfschlauch, Isolierschlauch, eine Isolierfolie oder ein Isollerröhrchen zwischen der Primärwicklung und der Sekundärwicklung vorzusehen und eventuell als Berührungsschutz auch die Primärwicklung mit einer Isolierung zu umhüllen. Kostenaufwendige Vergußmaßnahmen wie bei bekannten Zündtransformatoren sind dagegen nicht erforderlich.It is also particularly advantageous that the insulation effort of each ignition transformer is particularly low, since this increases disproportionately with the decrease in Secondary voltage reduced. A simple shrink tube is sufficient, Insulating tube, an insulating film or an isoller tube between the To provide primary winding and the secondary winding and possibly as Protection against accidental contact also to cover the primary winding with insulation. Expensive encapsulation measures as in known ignition transformers are against it not necessary.
Auch bei Verwendung von zwei Zündtransformatoren in einem Zündgerät sind diese aufgrund ihres weitaus einfacheren Aufbaues, verglichen mit bekannten Zündtransformatoren, hinsichtlich Baugröße und Kostenaufwand konkurrenzfähig.Even when using two Ignition transformers in an ignitor are by far their most common simpler construction, compared to known ignition transformers, in terms of Size and cost competitive.
Dies gilt um so mehr, als die erfindungsgemäße Anordnung von zwei Zündtransformatoren den Einsatz zusätzlicher funktechnischer Entstörmittel verzichtbar macht, so daß deren Einbauraum und Kosten eingespart werden können.This is all the more true since the arrangement according to the invention of two ignition transformers is used makes additional radio interference suppression dispensable, so that their Installation space and costs can be saved.
Dies wird erfindungsgemäß dadurch möglich, daß die Primärwicklung eine Drahtwicklung ist, die aus wenigen, dicht beieinanderliegenden Windungen besteht und elektrisch isoliert von der Sekundärwicklung angeordnet ist. Die wenigen dicht beieinanderliegenden Windungen sind dabei vorzugsweise mittig auf der Sekundärwicklung aufgebracht, um eine, verglichen mit einer Anordnung im Anfangs- oder Endbereich der Sekundärwicklung, stärkere Ankopplung zwischen Primär- und Sekundärwicklung zu erreichen.This is possible according to the invention in that the primary winding is a Is wire winding, which consists of a few, closely spaced turns and is arranged electrically insulated from the secondary winding. The few close adjacent turns are preferably centered on the Secondary winding applied to a, compared to an arrangement in the Start or end area of the secondary winding, stronger coupling between To achieve primary and secondary winding.
Da die Primärwicklung nur einen Teil der Sekundärwicklung umgibt, besitzt die Sekundärwicklung vorteilhafterweise eine relativ hohe Streuinduktivität, wodurch die Wirkung einer Funkentstördrossel erzielt wird. Sekundärwicklungen mit hoher Streuinduktivität sind an sich aus US 50 36 256 bekannt.Since the primary winding surrounds only part of the secondary winding, it has Secondary winding advantageously has a relatively high leakage inductance, whereby the Effect of a radio interference suppression choke is achieved. Secondary windings with high leakage inductance are known per se from US 50 36 256.
Tatsächlich kann der Zündtransformator der erfindungsgemäßen Anordnung auf einfache Weise aus einer handelsüblichen und kostengünstigen HF-(UKW-) Drossel (oder einem einer solchen nachempfundenen Aufbau) unter einfacher Hinzufügung einiger weniger Drahtwindungen als Primärwicklung ausgeführt werden.In fact, the ignition transformer of the arrangement according to the invention can be easily removed a commercially available and inexpensive HF (VHF) choke (or one such a model) with the simple addition of a few Wire windings are carried out as a primary winding.
Besonders vorteilhaft ist, den hochohmigen weichmagnetischen Kern als Ferritkern auszuführen, da dieser elektrisch sehr verlustarm und außerdem kostengünstig ist. It is particularly advantageous to use the high-resistance soft magnetic core as a ferrite core to carry out, since this is very low loss and also inexpensive.
Vorteilhaft ist aber auch, den weichmagnetischen Kern als Metallpulverkern (Eisenpulverkern, Molybdän-Permalloy-Pulver-Kern) auszubilden, da solche besonders hoch ansteuerbar sind und damit besonders kleinbauend ausgeführt werden können.But it is also advantageous to use the soft magnetic core as a metal powder core (Iron powder core, molybdenum permalloy powder core) to train, as such are particularly highly controllable and are therefore designed to be particularly small can be.
Im folgenden soll ein Ausführungsbeispiel eines in der erfindungsgemäßen Anordnung verwendeten Zündtransformators anhand der Zeichnung dargestellt werden.The following is an embodiment of one in the invention Arrangement used ignition transformer shown in the drawing become.
Die einzige Figur zeigt den Zündtransformator im Querschnitt.The single figure shows the ignition transformer in cross section.
Der Zündtransformator besteht aus einer einlagig gewickelten Stabkerndrossel mit einem hochohmigen Ferritkern (3), auf der eine weitere Wicklung (Primärwicklung (1)) mit wenigen dicht beieinanderliegenden Windungen angeordnet ist. Zwischen der Sekundärwicklung (2) und der Primärwicklung (1) ist eine einfache Isolierung (4), z. B. in Form eines Isolierschlauches oder einer Isolierfolie, vorgesehen.The ignition transformer consists of a single-core rod choke a high-resistance ferrite core (3) on which another winding (primary winding (1)) is arranged with a few closely spaced turns. Between the secondary winding (2) and the primary winding (1) are simple insulation (4), z. B. in the form of an insulating tube or an insulating film.
Die Enden der Sekundärwicklung (2) sind mit den axial herausgeführten Sekundäranschlüssen (S 1, S 2) verbunden; die Enden der Primärwicklung (1) sind als Primäranschlüsse (P 1, P 2) erkennbar.The ends of the secondary winding (2) are brought out axially Secondary connections (S 1, S 2) connected; the ends of the primary winding (1) recognizable as primary connections (P 1, P 2).
Der hochohmige Ferritkern (3) ist ca. 30 mm lang und hat einen Durchmesser von ca. 6 mm. Die Sekundärwicklung (2) hat ca. 100 Windungen und erstreckt sich fast über die ganze Länge des Ferritkerns (3). Die Primärwicklung (1) weist ca. 4 Windungen auf und ist sehr viel kürzer als der Ferritkern (3). Die angeführten Abmessungen sowie die Windungszahlen sind selbstverständlich nur beispielhaft.The high-resistance ferrite core (3) is approx. 30 mm long and has a diameter of approx. 6 mm. The secondary winding (2) has approximately 100 turns and almost extends over the entire length of the ferrite core (3). The primary winding (1) has approximately 4 Turns and is much shorter than the ferrite core (3). The listed Dimensions and the number of turns are of course only exemplary.
Zur Erzielung einer ausreichend hohen Zündspannung für in Kraftfahrzeugen verwendete Hochdruckgasentladungslampen wird der Zündtransformator mit einem weiteren gleichartigen Zündtransformator derart verschaltet, daß sich die sekundärseitig erzeugten Zündspannungen addieren. To achieve a sufficiently high ignition voltage for motor vehicles High-pressure gas discharge lamps used, the ignition transformer with a another similar ignition transformer connected in such a way that the Add ignition voltages generated on the secondary side.
Anordnung von zwei Zündtransformatoren
- 1
- Primärwicklung
- 2
- Sekundärwicklung
- 3
- hochohmiger weichmagnetischer Kern (Ferritkern)
- 4
- Isolierung
- P 1,
P 2 - Primäranschlüsse
- S 1,
S 2 - Sekundäranschlüsse
- 1
- primary
- 2
- secondary winding
- 3
- high-resistance soft magnetic core (ferrite core)
- 4
- insulation
- P 1,
P 2 - primary connections
- S 1,
S 2 - Secondary connections
Claims (5)
- Arrangement of two starter transformers for impulse starter devices for high pressure gas discharge lamps in vehicles, for generating a starting voltage which is overlaid by the no-load voltage of a lamp ballast, whereby the starter transformers are connected such that the secondary starting voltages become added together, whereby each starter transformer has a primary winding and a secondary winding arranged isolated from this, whereby the secondary winding (2) is a wire winding arranged in a single layer on a high impedance soft magnetic core (3), whereby the primary winding (1) is a wire winding comprising a few closely packed windings and arranged electrically isolated from the secondary winding, whereby the insulation (4) is formed between the primary winding (1) and the secondary winding (2) by a heat-shrink sleeve, an insulating sleeve, an insulating film or an insulating tube.
- Arrangement according to Claim 1, characterised in that the primary winding (1) is arranged centrally on the secondary winding (2).
- Arrangement according to Claim 1, characterised in that the secondary winding (2) and the high impedance soft magnetic core (3) is formed by a commercially available VHF choke.
- Arrangement according to Claim 1, characterised in that the high impedance soft magnetic core (3) is a ferrite core.
- Arrangement according to Claim 1, characterised in that the high impedance soft magnetic core (3) is a metal powder core.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19803856A DE19803856A1 (en) | 1998-01-31 | 1998-01-31 | Ignition transformer |
| DE19803856 | 1998-01-31 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0933975A2 EP0933975A2 (en) | 1999-08-04 |
| EP0933975A3 EP0933975A3 (en) | 2000-11-02 |
| EP0933975B1 true EP0933975B1 (en) | 2002-09-18 |
Family
ID=7856295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99101907A Expired - Lifetime EP0933975B1 (en) | 1998-01-31 | 1999-01-29 | Arrangement of two ignition transformers |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0933975B1 (en) |
| AT (1) | ATE224633T1 (en) |
| DE (2) | DE19803856A1 (en) |
| ES (1) | ES2184359T3 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7170381B2 (en) | 2003-07-09 | 2007-01-30 | Power Integrations, Inc. | Method and apparatus for transferring energy in a power converter circuit |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1968695U (en) * | 1962-12-24 | 1967-09-21 | Siemens Ag | HIGH FREQUENCY TRANSFORMER FOR IGNITORS OF XENON AND MERCURY VAPOR HIGH PRESSURE DISCHARGE VESSELS. |
| US4890041A (en) * | 1988-03-10 | 1989-12-26 | Hubbell Incorporated | High wattage HID lamp circuit |
| US5036256A (en) * | 1990-06-21 | 1991-07-30 | Gte Products Corporation | Arc discharge ballast suitable for automotive applications |
| US5072158A (en) * | 1990-10-16 | 1991-12-10 | Ilc Technology, Inc. | Silent lamp igniter |
| DE4117288A1 (en) * | 1991-05-27 | 1992-12-03 | Hella Kg Hueck & Co | HIGH VOLTAGE IGNITION TRANSMITTER FOR IGNITING AND OPERATING AC HIGH PRESSURE GAS DISCHARGE LAMPS IN MOTOR VEHICLES |
| JPH06196336A (en) * | 1991-11-29 | 1994-07-15 | Matsushita Electric Works Ltd | High voltage pulse transformer |
| JPH08130127A (en) * | 1994-06-15 | 1996-05-21 | Nippondenso Co Ltd | High voltage transformer and discharge lamp circuit |
| DE19610388A1 (en) * | 1996-03-16 | 1997-09-18 | Bosch Gmbh Robert | Ignition device e.g. for discharge lamp of motor vehicle |
| US6181081B1 (en) * | 1997-05-21 | 2001-01-30 | Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh | Ignition device for a discharge lamp and method for igniting a discharge lamp |
| IT1293443B1 (en) * | 1997-07-11 | 1999-03-01 | Magneti Marelli Spa | CONTROL DEVICE FOR A GAS DISCHARGE LAMP, PARTICULARLY FOR VEHICLES. |
| DE29811368U1 (en) * | 1998-06-28 | 1998-09-24 | Niggemeyer Gert Guenther Ing G | Ignition pulse transformer for ballasts for gas discharge lamps |
-
1998
- 1998-01-31 DE DE19803856A patent/DE19803856A1/en not_active Withdrawn
-
1999
- 1999-01-29 DE DE59902708T patent/DE59902708D1/en not_active Expired - Fee Related
- 1999-01-29 AT AT99101907T patent/ATE224633T1/en not_active IP Right Cessation
- 1999-01-29 EP EP99101907A patent/EP0933975B1/en not_active Expired - Lifetime
- 1999-01-29 ES ES99101907T patent/ES2184359T3/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0933975A3 (en) | 2000-11-02 |
| DE19803856A1 (en) | 1999-08-05 |
| DE59902708D1 (en) | 2002-10-24 |
| ATE224633T1 (en) | 2002-10-15 |
| ES2184359T3 (en) | 2003-04-01 |
| EP0933975A2 (en) | 1999-08-04 |
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