EP2116111B1 - Générateur d'impulsions de haute tension et lampe à décharge haute pression pourvue d'un générateur de ce type - Google Patents

Générateur d'impulsions de haute tension et lampe à décharge haute pression pourvue d'un générateur de ce type Download PDF

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Publication number
EP2116111B1
EP2116111B1 EP08717396A EP08717396A EP2116111B1 EP 2116111 B1 EP2116111 B1 EP 2116111B1 EP 08717396 A EP08717396 A EP 08717396A EP 08717396 A EP08717396 A EP 08717396A EP 2116111 B1 EP2116111 B1 EP 2116111B1
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EP
European Patent Office
Prior art keywords
pulse generator
spiral
pressure discharge
discharge lamp
voltage
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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.)
Not-in-force
Application number
EP08717396A
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German (de)
English (en)
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EP2116111A1 (fr
Inventor
Andreas Kloss
Bernhard Schalk
Steffen Walter
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Osram GmbH
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Osram GmbH
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Publication of EP2116111B1 publication Critical patent/EP2116111B1/fr
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    • 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

Definitions

  • the invention relates to a high-voltage pulse generator according to the preamble of claim 1.
  • Such generators can be used in particular for the ignition of high-pressure discharge lamps for general lighting or for photo-optical purposes or for motor vehicles.
  • the invention further relates to a high-pressure discharge lamp with such a generator.
  • the object of the present invention is to provide a spiral pulse generator which can be used as a high temperature resistant transformer.
  • a further object is to provide a high-pressure discharge lamp whose ignition behavior is significantly improved compared to previous lamps and in which no damage due to the high voltage is to be feared.
  • the spiral pulse generators generally consist of two conductors of approximately equal length wound up as a spiral, see FIG. 1 , This means that each conductor has approximately the same number of turns. Such a structure is required to use the vector inversion principle.
  • the second conductor only a few turns, while the first conductor has the usual number of turns, such as 20 to 100.
  • the spiral pulse generator acts as a high temperature resistant transformer.
  • This transformer works in a similar way to an integrated Saving Transformer in that the second conductor acts as a capacitor and thus acts as a charging capacitor for the transformer.
  • the generator can also be designed with only one conductor winding with three contacts as a real economy transformer.
  • LTCC component or HTCC component.
  • This material is a special ceramic that can be made temperature resistant to 600 ° C.
  • LTCC has already been used in connection with lamps, see US 2003/00015199 and US Pat. No. 6,853,151 , However, it has been used for quite different purposes in practically barely temperature loaded lamps, with typical temperatures below 100 ° C.
  • the spiral pulse generator is a component that combines the properties of a capacitor with those of a waveguide to produce ignition pulses with a voltage of at least 1.5 kV.
  • Two ceramic "green films" with metallic conductive paste are used for the production printed and then added to a spiral wound and finally isostatically pressed into a molding.
  • the following co-sintering of metal paste and ceramic film takes place in air in the temperature range between 800 and 900 ° C. This processing allows a range of application of the spiral pulse generator up to 700 ° C temperature load.
  • the spiral pulse generator can be accommodated in the immediate vicinity of the discharge vessel in the outer bulb, but also in the base or in the immediate vicinity of the lamp.
  • spiral pulse generator can also be used for other applications, because it is not only high temperature stable, but also extremely compact.
  • the spiral pulse generator is designed as an LTCC component, consisting of ceramic foils and metallic conductive paste.
  • the spiral should have at least 5 turns.
  • an ignition unit which furthermore comprises at least one charging resistor and a switch.
  • the switch can be a spark gap or a Diac in SiC technology.
  • the accommodation in the outer bulb is preferred. Because this eliminates the need for a high voltage resistant voltage supply.
  • a spiral pulse generator can be dimensioned so that the high-voltage pulse even allows a hot re-ignition of the lamp.
  • a very compact design of the spiral pulse generator is possible, so that an installation in commercial outer bulb of high-pressure discharge lamps succeed.
  • the generated high voltage pulse represents a comparatively large energy available, which facilitates the transition to self-discharge after successful breakdown.
  • the large pulse width also facilitates the breakdown in the discharge volume.
  • any conventional glass can be used, ie in particular tempered glass, Vycor or quartz glass.
  • the choice of filling is subject to no particular restriction.
  • FIG. 1 shows the basic structure of a spiral pulse generator 1 in plan view. It consists of a ceramic cylinder 2, in which two different metallic conductors 3 and 4 are spirally wrapped as a film strip.
  • the cylinder 2 is hollow inside and has a given inner diameter ID.
  • the two inner contacts 6 and 7 of the two conductors 3 and 4 are as close to each other as possible and are connected to each other via a spark gap 5.
  • the spiral pulse generator is either wound from two ceramic paste-coated ceramic foils or built up from two metal foils and two ceramic foils.
  • An important parameter is the number n of turns, which should preferably be in the order of 5 to 100.
  • This winding assembly is then laminated and then sintered, creating an LTCC component.
  • the thus created spiral pulse generators with capacitor property are then connected with a spark gap and a charging resistor.
  • the spark gap can be at the inner or the outer terminals or even within the winding of the generator are located.
  • a spark gap can preferably be used, which is temperature-stable. It is also possible to use a semiconductor switching element, preferably in SiC technology. This is suitable for temperatures above 350 ° C.
  • a ceramic film in particular a ceramic tape such as Heratape CT 707 or preferably CT 765 or a mixture of both, respectively from Heraeus, is preferably used as the dielectric. It has a thickness of the green film of typically 50 to 150 microns.
  • Ag conductive paste such as "Cofirable Silver", also from Heraeus, is used as the conductor.
  • a concrete example is TC 7303 from Heraeus. Good results are also provided by the metal paste 6145 from DuPont. These parts are easy to laminate and then heat out ("binder burnout") and sinter together ("co-firing").
  • the inner diameter ID of the spiral pulse generator is 10 mm.
  • the width of the individual strips is also 10 mm.
  • the film thickness is 50 ⁇ m and also the thickness of the two conductors is 50 ⁇ m in each case.
  • a ferrite 50 is shown in E-core shape, the center bar 51 passes through the inner cavity of the generator 1.
  • This technique can also be used for electrodeless lamps, where the spiral pulse generator can serve as a starting aid.
  • this compact high-voltage pulse generator is in the ignition of other devices.
  • the application is particularly advantageous in so-called magic spheres, in the generation of X-ray pulses and in the generation of electron beam pulses.
  • a use in a car as a replacement for the usual ignition coils is possible.
  • the invention develops particular advantages in cooperation with high-pressure discharge lamps for car headlights, which are filled with xenon under high pressure of preferably at least 3 bar and metal halides. These are particularly difficult to ignite because of the high xenon pressure, the ignition voltage is more than 10 kV.
  • high-pressure discharge lamps for car headlights which are filled with xenon under high pressure of preferably at least 3 bar and metal halides. These are particularly difficult to ignite because of the high xenon pressure, the ignition voltage is more than 10 kV.
  • a spiral pulse generator with integrated charging resistor can be accommodated in the base of the vehicle lamp.
  • the invention develops very special advantages in combination with high-pressure discharge lamps which contain no mercury. Such lamps are particularly desirable for environmental reasons. It contains a suitable metal halide fill and, in particular, a noble gas such as xenon under high pressure. Because of the lack of mercury, the ignition voltage is particularly high. It is more than 20 kV. Currently trying to accommodate the components of the ignition unit in the base. A spiral pulse generator with built-in charging resistor can either be housed in the base of the mercury-free lamp or in an outer bulb of the lamp.

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (18)

  1. Générateur compact d'impulsions de haute tension à base d'un générateur spiral-puls, dans lequel le générateur spiral-puls est réalisé sous la forme d'un composant LTCC ou d'un composant HTCC en une feuille de céramique enroulée en spirale et en une pâte métallique conductrice qui y est appliquée en forme de bande, caractérisé en ce que le générateur spiral-puls agit en transformateur par le fait qu'une première feuille en céramique est enroulée avec un premier conducteur métallique en une spirale ayant au moins 5 spires, un deuxième conducteur métallique étant enroulé ensemble avec la première feuille en céramique sur une deuxième feuille en céramique enroulée en spirale et agissant avec elle en tant que condensateur de charge, la longueur d'enroulement de la deuxième feuille en céramique étant cependant plus courte d'au moins deux spires que la longueur d'enroulement de la première feuille en céramique, tandis qu'en outre un commutateur est relié à l'extrémité intérieure du premier et du deuxième conducteurs.
  2. Générateur compact d'impulsions de haute tension à base d'un générateur spiral-puls, dans lequel le générateur spiral-puls est réalisé sous la forme d'un composant LTCC ou d'un composant HTCC en une feuille de céramique enroulée en spirale et en une pâte métallique conductrice qui y est appliquée en forme de bande, caractérisé en ce que le générateur spiral-puls agit en transformateur par le fait qu'une première feuille en céramique est enroulée avec un premier conducteur métallique en une spirale ayant au moins 5 spires, dans lequel il est monté en autotransformateur par le fait qu'une prise ( 40 ) médiane du conducteur métallique est reliée à l'extrémité ( 41 ) intérieure du conducteur métallique par un condensateur ( 10 ) de charge et par un éclateur ( 5 ).
  3. Générateur compact d'impulsions de haute tension suivant la revendication 1, caractérisé en ce que la spirale comprend au moins n = 5 spires et de préférence au plus n = 500 spires.
  4. Générateur compact d'impulsions de haute tension suivant la revendication 1 ou 2, caractérisé en ce que le générateur est entouré en tout ou partie d'un matériau ferritique ayant une perméabilité de µ=50... 5000.
  5. Générateur compact d'impulsions de haute tension suivant la revendication 1 ou 2, caractérisé en ce que le commutateur est un éclateur.
  6. Générateur compact d'impulsions de haute tension suivant la revendication 2, caractérisé en ce que le condensateur de charge est un condensateur classique.
  7. Générateur compact d'impulsions de haute tension suivant la revendication 1, caractérisé en ce que le nombre des enroulements du deuxième conducteur métallique représente au moins un enroulement et au plus 20% du nombre des enroulements du premier conducteur métallique.
  8. Dispositif d'amorçage à base d'un générateur spiral-puls suivant la revendication 1, caractérisé en ce que le dispositif d'amorçage comprend en outre au moins une résistance de charge et un commutateur.
  9. Lampe à décharge à haute pression comprenant une enceinte de décharge qui est logée dans une ampoule extérieure, un dispositif d'amorçage étant intégré dans la lampe et produisant des impulsions de haute tension dans la lampe d'au moins 15 kV, caractérisé en ce que le dispositif d'amorçage est logé dans l'ampoule extérieure et comprend un générateur d'impulsions de haute tension suivant l'une des revendications précédentes 1 à 7.
  10. Lampe à décharge à haute pression suivant la revendication 9, caractérisé en ce que le dispositif d'amorçage est maintenu par une monture dans l'ampoule extérieure.
  11. Lampe à décharge à haute pression suivant la revendication 9, caractérisé en ce que la haute tension fournie par le générateur spiral-puls agit directement sur deux électrodes dans l'enceinte de décharge.
  12. Lampe à décharge à haute pression suivant la revendication 9, caractérisé en ce que la tension fournie par le générateur spiral-puls agit sur une électrode auxiliaire d'amorçage mise à l'extérieur sur l'enceinte de décharge.
  13. Lampe à décharge à haute pression suivant la revendication 9, caractérisé en ce que dans l'ampoule extérieure est logée loge en outre une résistance série, qui limite le courant de charge du générateur spiral-puls.
  14. Lampe à décharge à haute pression comprenant une enceinte de décharge et un culot, un dispositif d'amorçage étant intégré dans la lampe et produisant des impulsions de haute tension dans la lampe d'au moins 15 kV, caractérisé en ce que le dispositif d'amorçage est logé dans le culot de la lampe et comprend un générateur d'impulsions de haute tension suivant l'une des revendications précédentes 1 à 7.
  15. Lampe à décharge à haute pression suivant la revendication 9 ou 14, caractérisé en ce que le générateur spiral-puls est formé de plusieurs couches, le nombre n des couches étant d'au moins n = 5.
  16. Lampe à décharge à haute pression suivant la revendication 15, caractérisé en ce que le nombre n des couches est au plus de n = 500, de préférence au plus de n = 100.
  17. Lampe à décharge à haute pression suivant la revendication 9 ou 14, caractérisé en ce que le générateur spiral-puls a une forme à peu près cylindrique creuse d'un diamètre intérieur d'au moins 10 mm.
  18. Lampe à décharge à haute pression suivant la revendication 9 ou 14, caractérisé en ce que la constante ε diélectrique du générateur spiral-puls est au moins de ε = 10.
EP08717396A 2007-03-06 2008-03-05 Générateur d'impulsions de haute tension et lampe à décharge haute pression pourvue d'un générateur de ce type Not-in-force EP2116111B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007010898A DE102007010898A1 (de) 2007-03-06 2007-03-06 Hochspannungspulsgenerator und Hochdruckentladungslampe mit derartigem Generator
PCT/EP2008/052642 WO2008107447A1 (fr) 2007-03-06 2008-03-05 Générateur d'impulsions de haute tension et lampe à décharge haute pression pourvue d'un générateur de ce type

Publications (2)

Publication Number Publication Date
EP2116111A1 EP2116111A1 (fr) 2009-11-11
EP2116111B1 true EP2116111B1 (fr) 2010-11-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08717396A Not-in-force EP2116111B1 (fr) 2007-03-06 2008-03-05 Générateur d'impulsions de haute tension et lampe à décharge haute pression pourvue d'un générateur de ce type

Country Status (8)

Country Link
US (1) US20100102725A1 (fr)
EP (1) EP2116111B1 (fr)
JP (1) JP5086374B2 (fr)
CN (1) CN101658073A (fr)
AT (1) ATE489835T1 (fr)
DE (2) DE102007010898A1 (fr)
TW (1) TW200845819A (fr)
WO (1) WO2008107447A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008036611A1 (de) 2008-08-06 2010-02-11 Osram Gesellschaft mit beschränkter Haftung Hochspannungsimpulsgenerator und Hochdruckentladungslampe mit einem Hochspannungsimpulsgenerator

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GB1087933A (en) 1963-10-10 1967-10-18 Atomic Energy Authority Uk Improvements in or relating to electrical pulse generators
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DE102005061831A1 (de) 2005-12-23 2007-06-28 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Hochdruckentladungslampe mit verbesserter Zündfähigkeit
DE102006026750A1 (de) 2006-06-08 2007-12-13 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Hochdruckentladungslampe mit verbesserter Zündfähigkeit sowie Hochspannungspulsgenerator

Also Published As

Publication number Publication date
JP2010520596A (ja) 2010-06-10
JP5086374B2 (ja) 2012-11-28
CN101658073A (zh) 2010-02-24
EP2116111A1 (fr) 2009-11-11
US20100102725A1 (en) 2010-04-29
WO2008107447A1 (fr) 2008-09-12
ATE489835T1 (de) 2010-12-15
TW200845819A (en) 2008-11-16
DE502008001885D1 (de) 2011-01-05
DE102007010898A1 (de) 2008-09-11

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