EP0895644B1 - Pyrotechnic circuit-breaking element for electric circuits - Google Patents
Pyrotechnic circuit-breaking element for electric circuits Download PDFInfo
- Publication number
- EP0895644B1 EP0895644B1 EP97921730A EP97921730A EP0895644B1 EP 0895644 B1 EP0895644 B1 EP 0895644B1 EP 97921730 A EP97921730 A EP 97921730A EP 97921730 A EP97921730 A EP 97921730A EP 0895644 B1 EP0895644 B1 EP 0895644B1
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- EP
- European Patent Office
- Prior art keywords
- current conductor
- separating
- pyrotechnic
- cross
- 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.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
- H01H39/006—Opening by severing a conductor
Definitions
- the invention relates to a pyrotechnic security element for circuits according to the preamble of claim 1, as known from US-A-42 24 487.
- Pyrotechnic fuse elements for circuits are for example from DE 42 11 079 A1 and DE 44 22 177 A1 known. In both cases, one cuts pyrotechnically operable separation device with a Separating element a conductor. In the case of the securing element according to DE 42 11 079 A1, the current conductor, in the area of a separating section to which the Separator acts, in one piece and with the same Cross-section as in the rest of the area, severed by destruction. A separating or Punching element / tool.
- the electrically conductive as well as force and form-fitting with two overlapping conductor sections is connected as a result of pyrotechnic operable disconnect device out of contact with at least brought one of the two conductor sections.
- the pyrotechnic charge by means of an ignition pulse or the like ignited, which is generated when using a Detector or the like Measuring device a current in the circuit to be secured is measured above of a maximum value. That way, with the known pyrotechnic security elements Circuits are protected against overcurrents, i.e. be protected against currents above the nominal or Continuous current.
- the invention has for its object a pyrotechnic To create a fuse element for circuits, that works well for a long time as well as its maintains electrical properties and beyond pyrotechnic charges as small as possible required.
- At least a current conductor in the area of its separating section in Make the cross-section smaller than outside of it Separating section.
- the reduction in cross section in the separating section is designed so that the voltage drop is negligibly small and so far the reduction in cross section electrically practical does not affect.
- Because of its reduced cross section in the area of the separating section at least one conductor with a comparatively small number Sever forces, which is beneficial to the Size of the pyrotechnic fuse element according to the invention and the sizing of pyrotechnic Charge affects.
- Securing elements also take place in the case of the invention Securing element triggering when by means of a current detector that is to be protected Circuit on above a threshold current flows.
- This depression is conveniently in the side section facing the separating element Arranged outer surface of the conductor.
- the opposing flanks serve in this way the recess as a guide for the separating element whose movement towards and through the separating section Conductor through.
- the at least one separating element in its starting position, out of it as a result of firing the pyrotechnic Charge to cut the conductor is movable, already immersed in the recess is.
- the cross-sectional area of the current conductor is preferably in the separating section about 50% or less than 50% and in particular less than 30% of the cross-sectional area of the conductor outside the separation section.
- the cross-sectional area is most preferably of the current conductor in the isolating section 5% up to 15% and in particular 10% of the cross-sectional area of the conductor outside the separation section.
- Figs. 1 to 4 is an embodiment of the Pyrotechnic securing element 10 according to the invention in different cross-sectional views on the one hand in Initial state with the conductor not yet cut (FIGS. 1 and 2) and on the other hand shown in the state in which the conductor is cut.
- FIGS. 1 and 2 the pyrotechnic Securing element 10 shown; for reasons the electronic is missing for better clarity Circuit for generating the ignition pulse for the pyrotechnic charge.
- the securing element has 10 a housing 12 made in particular electrically non-conductive material in which a cavity 14th is trained. Extends through the cavity 14 the electrical current conductor 16, which is on both sides is led out of the housing 12. To the led out ends of the conductor 16 can Connect the circuit to be protected.
- cylindrical cavity 14 is a pyrotechnic operable separation device 18, the one Has plastic piston 20.
- the plastic piston 20 carries on its end facing the conductor 16 a separating element 22 in the form of a plastic sword, preferably in one piece with the plastic piston 20 is connected.
- On the separating element 22 facing away from the end of the plastic piston 20 a pyrotechnic in the housing 12 Charge 24 with an ignition element (not shown), the electrically ignited via electrical feed lines 26 can be.
- the separating element 22 is included its front end in a recess 28 of the conductor 16 submerged.
- This recess 28 where it in the case of the exemplary embodiment is a cross section rectangular groove that extends over the entire Width of the conductor 16 extends, represents the Separating section 30 of the current conductor 16, in the Area of the current conductor 16 by means of the separating device 18 can be severed.
- the recess 28 is in the part 32 of the separator facing the Introduced outer surface of the conductor 16.
- On the side of the conductor remote from the separating device 18 16 is in the extension of the separating element 22 in the housing 12 a receiving space 34.
- the pyrotechnic fuse element 10 is protruding was explained using an example in which the Current conductor 16 reduced a separation section 30 Cross section.
- the current conductor 16 could, however also with several, e.g. provided two separating sections be, the separating element 22 then the middle part of the Current conductor 16 between the two separating sections would separate out.
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- Fuses (AREA)
Description
Die Erfindung betrifft ein pyrotechnisches Sicherungselement für Stromkreise gemäß dem Oberbegriff des Anspruchs 1, wie aus US-A-42 24 487 bekannt. The invention relates to a pyrotechnic security element for circuits according to the preamble of claim 1, as known from US-A-42 24 487.
Pyrotechnisch arbeitende Sicherungselemente für Stromkreise sind beispielsweise aus DE 42 11 079 A1 und DE 44 22 177 A1 bekannt. In beiden Fällen durchtrennt eine pyrotechnisch betreibbare Trennvorrichtung mit einem Trennelement einen Stromleiter. Im Falle des Sicherungselements nach DE 42 11 079 A1 wird der Stromleiter, der im Bereich eines Trennabschnitts, auf den die Trennvorrichtung einwirkt, einstückig und mit gleichem Querschnitt wie im übrigen Bereich ausgebildet ist, durch Zerstörung durchtrennt. Hierzu dient ein Trenn-bzw. Stanzelement/Werkzeug. Bei dem pyrotechnischen Sicherungselement nach DE 44 22 177 A1 wird ein Verbindungsteil, das elektrisch leitend sowie kraft- und formschlüssig mit zwei sich überlappenden Stromleiterabschnitten verbunden ist, infolge der pyrotechnisch betreibbaren Trennvorrichtung außer Kontakt mit mindestens einem der beiden Stromleiterabschnitte gebracht. Bei beiden bekannten Sicherungselementen wird die pyrotechnische Ladung mittels eines Zündimpulses o.dgl. gezündet, der erzeugt wird, wenn mittels eines Detektors o.dgl. Meßvorrichtung eine Stromstärke in dem zu sichernden Stromkreis gemessen wird, die oberhalb eines Maximalwertes liegt. Auf diese Weise können mit den bekannten pyrotechnischen Sicherungselementen Stromkreise gegen Überströme geschützt werden, d.h. gegen Ströme geschützt werden, die oberhalb des Nenn-bzw. Dauerstroms liegen. Pyrotechnic fuse elements for circuits are for example from DE 42 11 079 A1 and DE 44 22 177 A1 known. In both cases, one cuts pyrotechnically operable separation device with a Separating element a conductor. In the case of the securing element according to DE 42 11 079 A1, the current conductor, in the area of a separating section to which the Separator acts, in one piece and with the same Cross-section as in the rest of the area, severed by destruction. A separating or Punching element / tool. With the pyrotechnic Securing element according to DE 44 22 177 A1 becomes a connecting part, the electrically conductive as well as force and form-fitting with two overlapping conductor sections is connected as a result of pyrotechnic operable disconnect device out of contact with at least brought one of the two conductor sections. In both known security elements the pyrotechnic charge by means of an ignition pulse or the like ignited, which is generated when using a Detector or the like Measuring device a current in the circuit to be secured is measured above of a maximum value. That way, with the known pyrotechnic security elements Circuits are protected against overcurrents, i.e. be protected against currents above the nominal or Continuous current.
Wie sich in der Praxis herausgestellt hat, können bei den bekannten Sicherungselementen nach DE 44 22 177 A1 Langzeitprobleme durch Korrosion o.dgl. an den Kontaktstellen zwischen dem Verbindungselement und den beiden sich überlappenden Stromleiterabschnitten entstehen. Diesbezüglich wäre eine einteilige Ausbildung des Stromleiters im Bereich seines Trennabschnitts vorteilhaft. Demgegenüber erfordert das Sicherungselement nach DE 42 11 079 A1 recht hohe Kräfte zum Durchtrennen des Stromleiters, da dieser über seine gesamte Dicke durchgetrennt werden muß, was insbesondere bei Stromkreisen für hohe Ströme, wo Stromleiterschienen o.dgl. eingesetzt werden, großdimensionierte Sicherungselemente mit großen pyrotechnischen Ladungen erfordert. As it turned out in practice, at the known security elements according to DE 44 22 177 A1 Long-term problems due to corrosion or the like. at the contact points between the connecting element and the two overlapping conductor sections arise. In this regard, a one-piece training of the Current conductor in the region of its separating section advantageous. In contrast, the securing element requires DE 42 11 079 A1 quite high forces to cut the Conductor because it is cut across its entire thickness must be what, especially in circuits for high currents, where conductor rails or the like. used large-sized fuse elements with large pyrotechnic charges.
Der Erfindung liegt die Aufgabe zugrunde, ein pyrotechnisches Sicherungselement für Stromkreise zu schaffen, das über lange Zeit problemlos funktioniert sowie seine elektrischen Eigenschaften beibehält und darüber hinaus möglichst kleindimensionierte pyrotechnische Ladungen erfordert. The invention has for its object a pyrotechnic To create a fuse element for circuits, that works well for a long time as well as its maintains electrical properties and beyond pyrotechnic charges as small as possible required.
Zur Lösung dieser Aufgabe wird mit der Erfindung ein pyrotechnisches Sicherungselement für Stromkreise gemäß Anspruch 1 vorgeschlagen. To solve this problem, the invention Pyrotechnic fuse element for circuits proposed according to claim 1.
Nach der Erfindung ist also vorgesehen, den mindestens einen Stromleiter im Bereich seines Trennabschnitts im Querschnitt kleiner auszubilden als außerhalb dieses Trennabschnitts. Die Querschnittsverringerung im Trennabschnitt ist dabei derart ausgelegt, daß der Spannungsabfall vernachlässigbar klein ist und sich insofern die Querschnittsverringerung elektrisch praktisch nicht auswirkt. Aufgrund seines verminderten Querschnitts im Bereich des Trennabschnitts läßt sich der mindestens eine Stromleiter mit vergleichsweise geringen Kräften durchtrennen, was sich vorteilhaft auf die Baugröße des erfindungsgemäßen pyrotechnischen Sicherungselements und die Dimensionierung der pyrotechnischen Ladung auswirkt. Wie bei den bekannten pyrotechnischen Sicherungselementen erfolgt auch bei dem erfindungsgemäßen Sicherungselement die Auslösung dann, wenn mittels eines Stromdetektors erkannt wird, daß im abzusichernden Stromkreis ein oberhalb eines Schwellwerts liegender Strom fließt. According to the invention it is therefore provided that at least a current conductor in the area of its separating section in Make the cross-section smaller than outside of it Separating section. The reduction in cross section in the separating section is designed so that the voltage drop is negligibly small and so far the reduction in cross section electrically practical does not affect. Because of its reduced cross section in the area of the separating section at least one conductor with a comparatively small number Sever forces, which is beneficial to the Size of the pyrotechnic fuse element according to the invention and the sizing of pyrotechnic Charge affects. As with the well-known pyrotechnic Securing elements also take place in the case of the invention Securing element triggering when by means of a current detector that is to be protected Circuit on above a threshold current flows.
Grundsätzlich ist es von Vorteil, das Trennelement bzw. die Trennvorrichtung aus einem elektrisch isolierenden Material herzustellen. Infolge der lediglich geringen Kräfte zum Durchtrennen des Stromleiters in dessen Trennabschnitt ist es beispielsweise möglich, die Trennvorrichtung und insbesondere deren Trennelement in Kunststoff auszuführen, was auch im Hinblick auf die einfache Handhabbarkeit und die geringen Herstellungskosten von Vorteil ist. In principle, it is advantageous to use the separating element or the separator from an electrically insulating To produce material. As a result of the only minor Forces to cut the conductor in it Separating section it is possible, for example, the Separating device and in particular the separating element in Plastic to execute, which also with regard to easy handling and low manufacturing costs is an advantage.
In der Erfindung ist der Trennabschnitt als in die Außenfläche des Stromleiters eingebrachte Vertiefung insbesondere in Form einer Nute ausgeführt. Diese Vertiefung ist zweckmäßigerweise in dem dem Trennelement zugewandten Seitenabschnitt der Außenfläche des Stromleiters angeordnet. Auf diese Weise dienen die einander gegenüberliegenden Flanken der Vertiefung als Führung für das Trennelement bei dessen Bewegung auf den Trennabschnitt zu und durch den Stromleiter hindurch. Insofern ist es von Vorteil, wenn das mindestens eine Trennelement in seiner Ausgangsposition, aus der heraus es infolge der Zündung der pyrotechnischen Ladung zum Durchtrennen des Stromleiters bewegbar ist, bereits in die Vertiefung eingetaucht ist. In the invention, the Separation section than in the outer surface of the conductor indentation, in particular in the form of a groove executed. This depression is conveniently in the side section facing the separating element Arranged outer surface of the conductor. To this The opposing flanks serve in this way the recess as a guide for the separating element whose movement towards and through the separating section Conductor through. In this respect, it is an advantage if the at least one separating element in its starting position, out of it as a result of firing the pyrotechnic Charge to cut the conductor is movable, already immersed in the recess is.
Vorzugsweise beträgt die Querschnittsfläche des Stromleiters im Trennabschnitt etwa 50 % bzw. weniger als 50 % und insbesondere weniger als 30 % der Querschnittsfläche des Stromleiters außerhalb des Trennabschnitts. Höchst vorzugsweise beträgt die Querschnittsfläche des Stromleiters im Trennabschnitt 5 % bis 15 % und insbesondere 10 % der Querschnittsfläche des Stromleiters außerhalb des Trennabschnitts. The cross-sectional area of the current conductor is preferably in the separating section about 50% or less than 50% and in particular less than 30% of the cross-sectional area of the conductor outside the separation section. The cross-sectional area is most preferably of the current conductor in the isolating section 5% up to 15% and in particular 10% of the cross-sectional area of the conductor outside the separation section.
Die Vorteile und Eigenschaften des erfindungsgemäßen pyrotechnischen Sicherungselements lassen sich wie folgt zusammenfassen:
- Der mindestens eine Stromleiter ist einteilig ausgeführt, wodurch elektrische Kontaktzonen, die infolge von Temperatur, Fertigungstoleranzen, Feuchtigkeit oder Korrosion sich bezüglich ihres Übergangswiderstandes verändern können, vermieden sind.
- Die Herstellungskosten sind im Vergleich zu den bekannten pyrotechnischen Sicherungselementen wesentlich reduziert.
- Wegen der geringeren Trennkräfte kann die bewegte Masse reduziert werden, was geringere Materialstärken und die Verwendung kostengünstiger Kunststoffmaterialien ermöglicht.
- Die Baugröße des pyrotechnischen Sicherungselements ist relativ gering.
- Das pyrotechnische Sicherungselement weist lediglich wenige Einzelteile auf.
- Die pyrotechnische Ladung braucht lediglich gering ausgelegt zu sein.
- Es entstehen weniger Verlustleistungen.
- Es ist kaum Geräuschentwicklung zu verzeichnen.
- The at least one current conductor is made in one piece, thereby avoiding electrical contact zones which can change with regard to their contact resistance as a result of temperature, manufacturing tolerances, moisture or corrosion.
- The manufacturing costs are significantly reduced compared to the known pyrotechnic security elements.
- Due to the lower separating forces, the moving mass can be reduced, which enables lower material thicknesses and the use of inexpensive plastic materials.
- The size of the pyrotechnic fuse element is relatively small.
- The pyrotechnic securing element has only a few individual parts.
- The pyrotechnic charge need only be designed to be low.
- There are fewer power losses.
- There is hardly any noise.
Nachfolgend wird anhand der Figuren ein Ausführungsbeispiel der Erfindung näher erläutert. Im einzelnen zeigen:
- Fig. 1
- eine Querschnittsansicht durch ein pyrotechnisches Sicherungselement bei sich in der Ausgangsposition befindlichem Trennelement,
- Fig. 2
- einen Schnitt entlang der Linie II-II der Fig. 1,
- Fig. 3
- eine Schnittansicht des pyrotechnischen Sicherungselements bei durchtrenntem Stromleiter und
- Fig. 4
- eine Ansicht gemäß der Linie IV-IV der Fig. 3.
- Fig. 1
- 2 shows a cross-sectional view through a pyrotechnic securing element with the separating element located in the starting position,
- Fig. 2
- 2 shows a section along the line II-II of FIG. 1,
- Fig. 3
- a sectional view of the pyrotechnic fuse element with a cut conductor and
- Fig. 4
- a view along the line IV-IV of FIG. 3rd
In den Fign. 1 bis 4 ist ein Ausführungsbeispiel des erfindungsgemäßen pyrotechnischen Sicherungselements 10 in verschiedenen Querschnittsansichten einerseits im Ausgangszustand bei noch nicht durchtrenntem Stromleiter (Fign. 1 und 2) und andererseits im Zustand dargestellt, in dem der Stromleiter durchtrennt ist. In den Figuren ist der Einfachheit halber lediglich das pyrotechnische Sicherungselement 10 dargestellt; aus Gründen der besseren Übersichtlichkeit fehlt die elektronische Beschaltung zur Erzeugung des Zündimpulses für die pyrotechnische Ladung. In Figs. 1 to 4 is an embodiment of the Pyrotechnic securing element 10 according to the invention in different cross-sectional views on the one hand in Initial state with the conductor not yet cut (FIGS. 1 and 2) and on the other hand shown in the state in which the conductor is cut. In the For the sake of simplicity, figures is only the pyrotechnic Securing element 10 shown; for reasons the electronic is missing for better clarity Circuit for generating the ignition pulse for the pyrotechnic charge.
Wie sich aus den Figuren ergibt, weist das Sicherungselement 10 ein Gehäuse 12 aus insbesondere elektrisch nicht leitendem Material auf, in dem ein Hohlraum 14 ausgebildet ist. Durch den Hohlraum 14 hindurch erstreckt sich der elektrische Stromleiter 16, der beidseitig aus dem Gehäuse 12 herausgeführt ist. An den herausgeführten Enden des Stromleiters 16 läßt sich der abzusichernde Stromkreis anschließen. In dem insbesondere zylindrischen Hohlraum 14 befindet sich eine pyrotechnisch betreibbare Trennvorrichtung 18, die einen Kunststoffkolben 20 aufweist. Der Kunststoffkolben 20 trägt an seiner dem Stromleiter 16 zugewandten Stirnseite ein Trennelement 22 in Form eines Kunststoffschwertes, das vorzugsweise einstückig mit dem Kunststoffkolben 20 verbunden ist. Auf der dem Trennelement 22 abgewandten Stirnseite des Kunststoffkolbens 20 befindet sich in dem Gehäuse 12 eine pyrotechnische Ladung 24 mit einem (nicht dargestellten) Zündelement, das über elektrische Zuführleitungen 26 elektrisch gezündet werden kann. As can be seen from the figures, the securing element has 10 a housing 12 made in particular electrically non-conductive material in which a cavity 14th is trained. Extends through the cavity 14 the electrical current conductor 16, which is on both sides is led out of the housing 12. To the led out ends of the conductor 16 can Connect the circuit to be protected. In particular cylindrical cavity 14 is a pyrotechnic operable separation device 18, the one Has plastic piston 20. The plastic piston 20 carries on its end facing the conductor 16 a separating element 22 in the form of a plastic sword, preferably in one piece with the plastic piston 20 is connected. On the separating element 22 facing away from the end of the plastic piston 20 a pyrotechnic in the housing 12 Charge 24 with an ignition element (not shown), the electrically ignited via electrical feed lines 26 can be.
Wie sich aus Fig. 1 ergibt, ist das Trennelement 22 mit seinem vorderen Ende in eine Vertiefung 28 des Stromleiters 16 eingetaucht. Diese Vertiefung 28, bei der es sich im Falle des Ausführungsbeispiels um eine im Querschnitt rechteckige Nut handelt, die sich über die gesamte Breite des Stromleiters 16 erstreckt, stellt den Trennabschnitt 30 des Stromleiters 16 dar, in dessen Bereich der Stromleiter 16 mittels der Trennvorrichtung 18 durchgetrennt werden kann. Die Vertiefung 28 ist in den der Trennvorrichtung 18 zugewandten Teil 32 der Außenfläche des Stromleiters 16 eingebracht. Auf der der Trennvorrichtung 18 abgewandten Seite des Stromleiters 16 befindet sich in Verlängerung des Trennelements 22 im Gehäuse 12 ein Aufnahmeraum 34. As can be seen from FIG. 1, the separating element 22 is included its front end in a recess 28 of the conductor 16 submerged. This recess 28, where it in the case of the exemplary embodiment is a cross section rectangular groove that extends over the entire Width of the conductor 16 extends, represents the Separating section 30 of the current conductor 16, in the Area of the current conductor 16 by means of the separating device 18 can be severed. The recess 28 is in the part 32 of the separator facing the Introduced outer surface of the conductor 16. On the the side of the conductor remote from the separating device 18 16 is in the extension of the separating element 22 in the housing 12 a receiving space 34.
Wie man anhand der Fign. 3 und 4 erkennen kann, ist das Trennelement 22 bei ausgelöstem Sicherungselement 10 durch den Trennabschnitt 30 des Stromleiters 16 hindurch bis in den Aufnahmeraum 34 vorbewegt. Dieser Aufnahmeraum 34 dient darüber hinaus aber auch zur Aufnahme desjenigen Teils 36 des Stromleiters 16, innerhalb von dessen Trennabschnitt 30, der durch das Trennelement 22 herausgetrennt ist. In gewisser Weise stanzt das Trennelement 22 also aus dem Trennabschnitt 30 des Stromleiters 16 den Teil 36 heraus. How to use the fig. 3 and 4 can see that is Separating element 22 when fuse element 10 is triggered through the separating section 30 of the current conductor 16 moved forward into the recording room 34. This recording room 34 is also used for recording of that part 36 of the current conductor 16, within from its separating section 30, through the separating element 22 is separated. In a way, punching the separating element 22 thus from the separating section 30 of the Current conductor 16 the part 36 out.
Das pyrotechnische Sicherungselement 10 ist vortehend anhand eines Beispiels erläutert worden, bei dem der Stromleiter 16 einen Trennabschnitt 30 verringerten Querschnitts aufweist. Der Stromleiter 16 könnte aber auch mit mehreren, z.B. zwei Trennabschnitten versehen sein, wobei das Trennelement 22 dann den Mittelteil des Stromleiters 16 zwischen den beiden Trennabschnitten heraustrennen würde. The pyrotechnic fuse element 10 is protruding was explained using an example in which the Current conductor 16 reduced a separation section 30 Cross section. The current conductor 16 could, however also with several, e.g. provided two separating sections be, the separating element 22 then the middle part of the Current conductor 16 between the two separating sections would separate out.
Claims (7)
- Pyrotechnic fuse element for electric circuits, havingcharacterisedat least one current conductor (16) anda pyrotechnically operable separating device (18) having at least one separating element (22) for cutting through the at least one current conductor (16), wherein the separating element (22) can be moved towards and through a separating section (30) of the current conductor (16) as a result of the ignition of a pyrotechnic charge (24), and wherein the current conductor (16) in the region of its separating section has a cross-sectional area which is smaller than in the region outside the separating section (30) of the current conductor (16),in that the current conductor (16) is constructed in one piece,in that the separating section (30) of the current conductor (16) has a groove (28) inserted in one of its outside surfaces, which groove extends over the entire width of the current conductor (16),
andin that the separating element (22) engages the groove (28) at least during the separation process. - Pyrotechnic fuse element according to claim 1, characterised in that the groove (28) is formed in the outside surface of the current conductor (16) that faces the separating element (22).
- Pyrotechnic fuse element according to claim 1 or 2, characterised in that, in its starting position out of which it can be moved as a result of the ignition of the pyrotechnic charge (24) in order to cut through the current conductor (16), the at least one separating element (22) is extends into the groove (28).
- Pyrotechnic fuse element according to one of claims 1 to 3, characterised in that the at least one separating element (22) consists of an electrically insulating material, in particular a plastics material.
- Pyrotechnic fuse element according to one of claims 1 to 4, characterised in that the cross-sectional area of the current conductor (16) in the separating section (30) amounts to less than 50% of the cross-sectional area of the current conductor (16) outside the separating section (30).
- Pyrotechnic fuse element according to claim 5, characterised in that the cross-sectional area of the current conductor (16) in the separating section (30) amounts to less than 30% of the cross-sectional area of the current conductor (16) outside the separating section (30).
- Pyrotechnic fuse element according to claim 5 or 6, characterised in that the cross-sectional area of the current conductor (16) in the separating section (30) amounts to 5% to 15%, in particular 10%, of the cross-sectional area of the current conductor (16) outside the separating section (30).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19616993 | 1996-04-27 | ||
| DE19616993A DE19616993A1 (en) | 1996-04-27 | 1996-04-27 | Pyrotechnic fuse element for circuits |
| PCT/EP1997/002081 WO1997041581A1 (en) | 1996-04-27 | 1997-04-24 | Pyrotechnic circuit-breaking element for electric circuits |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0895644A1 EP0895644A1 (en) | 1999-02-10 |
| EP0895644B1 true EP0895644B1 (en) | 1999-11-10 |
Family
ID=7792706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97921730A Expired - Lifetime EP0895644B1 (en) | 1996-04-27 | 1997-04-24 | Pyrotechnic circuit-breaking element for electric circuits |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0895644B1 (en) |
| DE (2) | DE19616993A1 (en) |
| WO (1) | WO1997041581A1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19749896A1 (en) * | 1997-11-12 | 1999-06-02 | Knipping Kunststofftechnik Wer | Pyrotechnical safety switch for motor vehicle |
| DE19817133A1 (en) * | 1998-04-19 | 1999-10-28 | Lell Peter | Power disconnecting switch for emergency use in high current circuits, especially vehicles |
| DE19908578A1 (en) * | 1999-02-27 | 2000-08-31 | Moeller Gmbh | Drive for operation of switches used in belt tightening and airbag systems comprises at least one sensor which is integrated in pyrotechnical element and uses at least one perturbing variable to ignite this element |
| DE19957261A1 (en) * | 1999-11-19 | 2001-06-21 | Siemens Ag | Electrical power supply arrangement with superconducting magnets as energy store |
| EP1464544B1 (en) | 2003-04-03 | 2010-09-15 | Delphi Technologies, Inc. | Housing with a busbar for a separation device |
| DE102004011863A1 (en) * | 2003-04-03 | 2004-10-14 | Dynamit Nobel Ais Gmbh Automotive Ignition Systems | Housing with conductor rail for a separation system |
| DE502004005237D1 (en) * | 2003-04-30 | 2007-11-29 | Delphi Tech Inc | Housing for a pyromechanical separator with integrated ignition element |
| FR2957452B1 (en) * | 2010-03-15 | 2012-08-31 | Snpe Materiaux Energetiques | ELECTRIC SWITCH WITH PYROTECHNIC ACTUATION |
| DE102017119285A1 (en) | 2017-02-01 | 2018-08-02 | Dehn + Söhne Gmbh + Co. Kg | Triggerable fuse for low voltage applications |
| AT525379B1 (en) * | 2019-07-12 | 2023-07-15 | Astotec Automotive Gmbh | Pyrotechnic power disconnect |
| EP3800655A1 (en) | 2019-10-02 | 2021-04-07 | Peter Lell | Quick disconnect switch |
| AT523708B1 (en) * | 2020-04-16 | 2021-11-15 | Hirtenberger Automotive Safety Gmbh & Co Kg | Pyrotechnic current isolator and process for its manufacture |
| GB2599740A (en) * | 2020-10-09 | 2022-04-13 | Eaton Intelligent Power Ltd | Pyrotechnic switch and method for operating a pyrotechnic switch |
| CN113258540A (en) * | 2021-06-28 | 2021-08-13 | 西安中熔电气股份有限公司 | Circuit control device for controlling circuit disconnection and enabling energy storage component to release energy |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1059022A (en) * | 1963-02-08 | 1967-02-15 | English Electric Co Ltd | Improvements in and relating to electrical fuse-elements |
| DK124506B (en) * | 1969-01-06 | 1972-10-23 | Knudsen Nordisk Elect | Sand-filled electric fuse. |
| FR2159628A5 (en) * | 1971-11-05 | 1973-06-22 | France Etat | |
| US4224487A (en) * | 1978-02-23 | 1980-09-23 | Simonsen Bent P | Fast acting explosive circuit interrupter |
| DE8027885U1 (en) * | 1980-10-18 | 1982-01-21 | Diehl GmbH & Co, 8500 Nürnberg | Circuit breaker for interrupting a circuit with explosive effect |
| US4417519A (en) * | 1981-06-04 | 1983-11-29 | Mcdonnell Douglas Corporation | Explosive switch |
| JP2542702B2 (en) * | 1989-09-29 | 1996-10-09 | 工業技術院長 | High speed high current switch |
| DE4211079A1 (en) * | 1992-04-03 | 1993-10-07 | Dynamit Nobel Ag | Method for securing circuits, in particular circuits carrying high currents, against overcurrents and electrical fuse element, in particular high current fuse element |
| DE4422177A1 (en) * | 1994-06-28 | 1996-01-04 | Dynamit Nobel Ag | High-voltage pyrotechnic fuse element |
-
1996
- 1996-04-27 DE DE19616993A patent/DE19616993A1/en not_active Withdrawn
-
1997
- 1997-04-24 EP EP97921730A patent/EP0895644B1/en not_active Expired - Lifetime
- 1997-04-24 DE DE59700700T patent/DE59700700D1/en not_active Expired - Fee Related
- 1997-04-24 WO PCT/EP1997/002081 patent/WO1997041581A1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| DE19616993A1 (en) | 1997-10-30 |
| DE59700700D1 (en) | 1999-12-16 |
| WO1997041581A1 (en) | 1997-11-06 |
| EP0895644A1 (en) | 1999-02-10 |
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