EP0690466A1 - Pyrotechnic excess current protection element - Google Patents

Pyrotechnic excess current protection element Download PDF

Info

Publication number
EP0690466A1
EP0690466A1 EP95109677A EP95109677A EP0690466A1 EP 0690466 A1 EP0690466 A1 EP 0690466A1 EP 95109677 A EP95109677 A EP 95109677A EP 95109677 A EP95109677 A EP 95109677A EP 0690466 A1 EP0690466 A1 EP 0690466A1
Authority
EP
European Patent Office
Prior art keywords
fuse element
current fuse
current
element according
contact
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
EP95109677A
Other languages
German (de)
French (fr)
Other versions
EP0690466B1 (en
Inventor
Heinz Kern
Gerhard Kordel
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.)
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
Original Assignee
Dynamit Nobel AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dynamit Nobel AG filed Critical Dynamit Nobel AG
Publication of EP0690466A1 publication Critical patent/EP0690466A1/en
Application granted granted Critical
Publication of EP0690466B1 publication Critical patent/EP0690466B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • 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
    • H01H2039/008—Switching devices actuated by an explosion produced within the device and initiated by an electric current using the switch for a battery cutoff

Definitions

  • the invention relates to a pyrotechnic high-current fuse element according to the preamble of claim 1.
  • fuses which are specially matched to the respective application. These fuses have a current (fuse) conductor, which is connected to the circuit of the electrical consumer.
  • the cross section and the material of the fusible conductor are selected such that it melts and destroys at electrical currents which are greater than a desired threshold value.
  • DE 42 11 079 A1 discloses a method for securing circuits, in particular circuits carrying high currents, against overcurrents, and a high-current fuse element in which the strength of the current flowing through the current conductor is determined and the current conductor is destroyed as a result of the ignition of a pyrotechnic charge when the current exceeds a threshold.
  • a cutting element is accelerated by the ignition of the pyrotechnic charge in such a way that it cuts through the current conductor.
  • the invention has for its object to improve a pyrotechnic high-current fuse element according to the preamble of claim 1 such that a universal use with a simple structure is guaranteed. In addition, ultra-short separation times are to be achieved.
  • the design of the high-current fuse element as a separate component ensures universal use.
  • the current conductors to be monitored only need to be cut and the cut ends of the current conductor connected to the high-current fuse element.
  • the shape or the thickness of the conductor are irrelevant.
  • high-current fuse element is intended to express that the circuit is switched off when a predetermined threshold value is exceeded. High current can therefore be seen here relative to the continuous current that flows through the current conductors.
  • a preferred embodiment is characterized in that the high-current fuse element has two busbars which overlap at one end at a distance and which are electrically conductively connected to one another by a contact bolt bridging the distance, and the contact bolt by the ignition of the pyrotechnic charge from the contact position into a current flow interrupting position (isolation position) is brought.
  • This achieves a simple construction of the high-current fuse element.
  • the safety of the separation is guaranteed with ultra-short separation times.
  • the high-current fuse element according to the invention achieves separation times which are in the range from 150 to 300 microseconds.
  • the contact pin with an interference fit is arranged in a bore projecting through the two busbars. This creates a good electrical connection between the two busbars.
  • the connection is also mechanically stable. Copper is preferred as the material for the busbars and the contact bolt. However, other metals or metal compounds such as aluminum or brass are also suitable.
  • the contact pin advantageously has knurling in the area of contact with the two busbars. This creates many individual small and defined contact areas, so that good electrical contact is ensured.
  • an insulation plunger is advantageously arranged in the axial direction adjacent to the contact plunger, the pressurization of the ignited pyrotechnic charge on the contact plunger taking place via the insulation plunger.
  • the diameter of the contact pin is equal to the diameter of the insulation stamp.
  • the insulation stamp can also advantageously be slightly conical to form this permanent connection. It is sufficient if the end of the insulation stamp facing away from the uppermost busbar is of slightly conical design.
  • the contact pin, the insulation stamp and the bores in the busbars are located in a housing bore.
  • the pyrotechnic charge advantageously forms the closure piece of the housing bore. This creates a hermetically sealed space.
  • the housing bore is provided with a ventilation bore at its end receiving the contact bolt in the insulating position.
  • the vent hole is expediently closed from the outside with a visible stopper which is expelled or destroyed when the compressed gas escapes and thereby functions as an indicator.
  • a visible stopper which is expelled or destroyed when the compressed gas escapes and thereby functions as an indicator.
  • other designs of a detector can also be used.
  • a pyrotechnic charge igniter elements are used in a preferred embodiment, as z. B. be used in gas generators for airbags.
  • trip electronics are integrated in the high-current fuse element, which trigger when the current is exceeded by the high-current fuse element automatically initiates the ignition of the pyrotechnic charge via a predetermined threshold value.
  • the trigger electronics are advantageously plugged onto the high-current fuse element in a module-like manner.
  • the high-current fuse element 1 shows an embodiment of a high-current fuse element 1 according to the invention.
  • the high-current fuse element 1 consists of a housing 10 from which two busbars 4a, 4b protrude. Current conductors 3, 3 'of a circuit which is to be secured are fastened to these busbars 4a, 4b.
  • a socket 14 is arranged in the center, which with a not shown in this figure Trigger electronics can be connected.
  • a pyrotechnic separating device Arranged in the interior of the housing 10 is a pyrotechnic separating device which cuts, ie interrupts, the electrically conductive connection of the two busbars 4a, 4b when the triggering electronics signal is given.
  • a housing bore 7 is made as a blind hole. At its open end face, the housing bore 7 is closed with a closure piece 13.
  • the closure piece 13 can e.g. glued, pinched or welded.
  • a pyrotechnic charge 2 or an ignition element is inserted in the closure piece 13. When ignited, the pyrotechnic charge 2 generates a compressed gas.
  • the pyrotechnic charge 2 is connected via a connection, not shown, to the socket 14 on the cover 11 (see FIG. 1) of the high-current fuse element.
  • two busbars 4a, 4b are inserted, which project through the housing bore 7 and are arranged one above the other at a distance.
  • the distance between the two busbars 4a, 4b is so large that a voltage flashover after separation has been ruled out.
  • a hole corresponding to the diameter of the housing bore 7 is arranged in each of the two busbars 4a, 4b, these holes forming part of the wall of the housing bore 7.
  • the two busbars 4a, 4b are connected in an electrically conductive manner by means of a contact pin 5, which is press-fitted both in the upper part 4a and in the lower conductor rail 4b.
  • the length of the contact pin 5 is equal to the distance between the two busbars 4a, 4b from each other plus the thickness of the two busbars 4a, 4b.
  • the contact pin 5 In the area of contacting with the busbars 4a, 4b, the contact pin 5 has a knurling (not shown), so that there are a defined number of small contact points which bring about and ensure a uniform current distribution.
  • an insulation stamp 6 made of an electrically non-conductive material, such as e.g. Glass fiber or a hard plastic.
  • the insulation stamp 6 has the same diameter as the contact pin 5. Its length is reduced by the thickness of a busbar 4b compared to the length of the contact pin 5.
  • a receiving space 15 is provided in the housing bore 7 for receiving the contact pin 5 after the pyrotechnic charge 2 has been ignited. The length of the receiving space 15 is selected so that after the ignition of the contact pin 5 on the lower end face of the housing bore 7 and with its other end it is still seated in the lower conductor rail 4b (see FIG. 5).
  • the housing bore 7 is provided on the lower end face with a vent hole 8, which preferably leads into the atmosphere via a kink. From the outside, the vent hole 8 is advantageously closed with a plug, not shown, which is expelled or destroyed by the pressure surge during ignition and thereby functions as a detector or indicator.
  • busbars 4a, 4b are provided with bores 18 so that current conductors 3, 3 '(see FIG. 1) can be easily attached, for example by means of a screw connection.
  • the contact pin 5 shows in section the high-current fuse element after tripping.
  • the contact pin 5 sits on the bottom of the housing bore 7 and hangs with its other end in the lower conductor rail 4b. "Up” means the direction to the pyrotechnic charge 2 and “down” the direction to the vent hole 8.
  • the insulation stamp 6 After ignition, the insulation stamp 6 almost assumes the original position (contact position) of the contact bolt 5, the insulation stamp 6 adjoining the lower busbar 4b, but not protruding into the bore in the busbar 4b. An outside of the vent hole 8 plug is expelled or destroyed by the pressure surge of the escaping gas, so that it is visible from the outside that ignition has taken place.
  • 2a shows the high-current fuse element 1 with attached trigger electronics 9 for direct current and alternating current.
  • 2b shows the trigger electronics 9 alone.
  • a plug (not shown) is arranged on the underside of the release electronics 9 and is inserted into the socket 14 (see FIG. 1).
  • two metallic taps 16 go down to the busbars 4a, 4b and have electrical contact with them.
  • the taps 16 have a pin which projects into a recess in the respective busbars, so that there is an improved electrical contact.
  • a socket 17 is arranged through which the high-current fuse element can also be ignited from the outside.
  • the trigger electronics shown in FIGS. 2a, 2b is intended for direct current.
  • the voltage drop between the two busbars 4a, 4b is measured via the two taps 16.
  • the trigger electronics 9 ignite the pyrotechnic charge 2 via the socket 14 (see FIG. 1). It may also be expedient not to provide the cover 11 with the socket 14 and instead trigger the trigger electronics 9 directly on the housing 10 fasten.
  • trigger electronics 9 for alternating current are shown. As already shown in FIGS. 2a, 2b, this trigger electronics 9 is also plugged into the basic module shown in FIG. With alternating current, the level of an induced current is measured.
  • a coil 19 or an AC transformer is arranged in a box 18 on the side of the trigger electronics 9. The coil 19 engages around one of the busbars. The current induced in the coil 19 is evaluated in the trigger electronics 9 and when a predetermined value is exceeded, the pyrotechnic charge is ignited via the socket 14 (see FIG. 1). At the same time, the alternating current induced in the coil 19 serves to supply the trigger electronics with voltage.
  • the electronics consist of standard elements.

Landscapes

  • Fuses (AREA)

Abstract

A high power electrical safety fuse has a housing (12) of non-conducting material. The housing has a bore (7) with a sealing plug (13) into which is set a pyrotechnical charge (2). When the charge is activated gas pressure is generated (6) and this displaces a contact bolt (5). The bolt moves to break the electrical connection between a pair of power rails (4a, 4b). <IMAGE>

Description

Die Erfindung betrifft ein pyrotechnisches Hochstromsicherungselement nach dem Oberbegriff des Anspruchs 1.The invention relates to a pyrotechnic high-current fuse element according to the preamble of claim 1.

Der Schutz von elektrischen Verbrauchern gegen Überströme infolge beispielsweise Kurzschluß, Überlastung od. dgl. wird unter anderem durch speziell auf den jeweiligen Anwendungsfall abgestimmte Schmelzsicherungen realisiert. Diese Schmelzsicherungen weisen einen Strom-(Schmelz-)leiter auf, der in den Stromkreis des elektrischen Verbrauchers geschaltet ist. Der Querschnitt und das Material des Schmelzleiters sind derart gewählt, daß er bei elektrischen Strömen, die größer sind als ein gewünschter Schwellenwert, schmilzt und sich zerstört.The protection of electrical consumers against overcurrents as a result, for example, of a short circuit, overload or the like is implemented, inter alia, by means of fuses which are specially matched to the respective application. These fuses have a current (fuse) conductor, which is connected to the circuit of the electrical consumer. The cross section and the material of the fusible conductor are selected such that it melts and destroys at electrical currents which are greater than a desired threshold value.

Mit konventionellen Schmelzsicherungen lassen sich im günstigsten Fall lediglich Ansprechzeiten im Millisekundenbereich realisieren, was zur Zerstörung der zu schützenden Schaltungen führen kann. Problematisch ist ferner die Typenvielfalt, in der Sicherungselemente zur Verfügung gestellt werden müssen, da für jede Anwendung eine bestimmte Ansprech-Charakteristik erfüllt sein muß und damit ein spezifisches Design gegeben ist.In the best case scenario, conventional fuses can only achieve response times in the millisecond range, which can lead to the destruction of the circuits to be protected. Another problem is the variety of types in which fuse elements have to be made available, since a certain response characteristic must be fulfilled for each application and thus a specific design is given.

Aus der DE 42 11 079 A1 ist ein Verfahren zum Sichern von Stromkreisen, insbesondere von hohen Strömen führenden Stromkreisen gegen Überströme, sowie ein Hochstromsicherungselement bekannt, bei dem die Stärke des den Stromleiter durchfließenden Stroms ermittelt wird und der Stromleiter infolge der Zündung einer pyrotechnischen Ladung zerstört wird, wenn die Stromstärke einen Schwellenwert übersteigt. Hierzu wird ein Schneidelement durch die Zündung der pyrotechnischen Ladung derart beschleunigt, daß es den Stromleiter durchtrennt.DE 42 11 079 A1 discloses a method for securing circuits, in particular circuits carrying high currents, against overcurrents, and a high-current fuse element in which the strength of the current flowing through the current conductor is determined and the current conductor is destroyed as a result of the ignition of a pyrotechnic charge when the current exceeds a threshold. For this purpose, a cutting element is accelerated by the ignition of the pyrotechnic charge in such a way that it cuts through the current conductor.

Der Erfindung liegt die Aufgabe zugrunde, ein pyrotechnisches Hochstromsicherungselement nach dem Oberbegriff des Anspruchs 1 derart zu verbessern, daß eine universelle Einsatzmöglichkeit bei einfachem Aufbau gewährleistet ist. Außerdem sollen ultrakurze Trennzeiten erreicht werden.The invention has for its object to improve a pyrotechnic high-current fuse element according to the preamble of claim 1 such that a universal use with a simple structure is guaranteed. In addition, ultra-short separation times are to be achieved.

Erfindungsgemäß wird diese Aufgabe durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.According to the invention, this object is achieved by the characterizing features of claim 1.

Durch die Ausbildung des Hochstromsicherungselements als separates Bauteil ist eine universelle Einsatzmöglichkeit gewährleistet. Die zu überwachenden Stromleiter brauchen lediglich durchtrennt und die durchtrennten Enden des Stromleiters an das Hochstromsicherungselement angeschlossen werden. Die Form oder die Dicke des Stromleiters sind dabei ohne Bedeutung.The design of the high-current fuse element as a separate component ensures universal use. The current conductors to be monitored only need to be cut and the cut ends of the current conductor connected to the high-current fuse element. The shape or the thickness of the conductor are irrelevant.

Mit dem Begriff Hochstromsicherungselement soll ausgedrückt werden, daß bei Überschreiten eines vorgegebenen Schwellenwertes eine Abschaltung des Stromkreises erfolgt. Hochstrom ist hier also relativ zum Dauerstrom zu sehen, der durch die Stromleiter fließt.The term high-current fuse element is intended to express that the circuit is switched off when a predetermined threshold value is exceeded. High current can therefore be seen here relative to the continuous current that flows through the current conductors.

Eine bevorzugte Ausführungsform zeichnet sich dadurch aus, daß das Hochstromsicherungselement zwei sich an ihrem Ende mit Abstand überlappende Stromschienen aufweist, die durch einen den Abstand überbrückenden Kontaktbolzen miteinander elektrisch leitend verbunden sind und der Kontaktbolzen durch die Zündung der pyrotechnischen Ladung aus der Kontaktstellung in eine den Stromfluß unterbrechende Stellung (Isolierstellung) gebracht wird. Hierdurch ist ein einfacher Aufbau des Hochstromsicherungselementes erreicht. Außerdem ist die Sicherheit der Trennung bei gleichzeitig ultrakurzen Trennzeiten gewährleistet. Mit dem erfindungsgemäßen Hochstromsicherungselement werden Trennzeiten erreicht, die im Bereich von 150 bis 300 Mikrosekunden liegen.A preferred embodiment is characterized in that the high-current fuse element has two busbars which overlap at one end at a distance and which are electrically conductively connected to one another by a contact bolt bridging the distance, and the contact bolt by the ignition of the pyrotechnic charge from the contact position into a current flow interrupting position (isolation position) is brought. This achieves a simple construction of the high-current fuse element. In addition, the safety of the separation is guaranteed with ultra-short separation times. The high-current fuse element according to the invention achieves separation times which are in the range from 150 to 300 microseconds.

Erfindungsgemäß ist der Kontaktbolzen mit Preßsitz in einer die beiden Stromschienen durchragenden Bohrung angeordnet. Dies schafft eine gute elektrische Verbindung der beiden Stromschienen. Außerdem ist die Verbindung auch mechanisch stabil. Als Material für die Stromschienen und den Kontaktbolzen eignet sich bevorzugt Kupfer. Aber auch andere Metalle oder Metallverbindungen wie Aluminium oder Messing sind geeignet.According to the invention, the contact pin with an interference fit is arranged in a bore projecting through the two busbars. This creates a good electrical connection between the two busbars. The connection is also mechanically stable. Copper is preferred as the material for the busbars and the contact bolt. However, other metals or metal compounds such as aluminum or brass are also suitable.

Vorteilhafterweise weist der Kontaktbolzen im Bereich der Kontaktierung mit den beiden Stromschienen eine Rändelung auf. Hierdurch sind viele einzelne kleine und definierte Kontaktflächen geschaffen, so daß ein guter elektrischer Kontakt gewährleistet ist.The contact pin advantageously has knurling in the area of contact with the two busbars. This creates many individual small and defined contact areas, so that good electrical contact is ensured.

Erfindungsgemäß ist vorteilhafterweise in Achsialrichtung an den Kontaktbolzen angrenzend ein Isolationsstempel angeordnet, wobei die Druckbeaufschlagung der gezündeten pyrotechnischen Ladung auf den Kontaktbolzen über den Isolationsstempel erfolgt. In bevorzugter Ausführung ist der Durchmesser des Kontaktbolzens gleich dem Durchmesser des Isolationsstempels. Dies hat den Vorteil, daß nach erfolgter Zündung der pyrotechnischen Ladung der Isolationsstempel den Kontaktbolzen aus seiner Kontaktstellung in eine Isolierstellung drückt und dabei vorteilhafterweise nahezu die Kontaktstellung des Isolationsstempels einnimmt. Wenn der Durchmesser des Isolationsstempels gleich dem des Kontaktbolzens ist, sitzt nach erfolgter Zündung der pyrotechnischen Ladung der Isolationsstempel mit Preßsitz in der obersten Stromschiene. Wichtig ist hierbei, daß der Isolationsstempel nach erfolgter Zündung unlösbar mit zumindest einer der Stromschienen verbunden ist, so daß ein Wiederherstellen des Ausgangszustandes nicht möglich ist. Dies ist ein bedeutender Sicherheitsaspekt.According to the invention, an insulation plunger is advantageously arranged in the axial direction adjacent to the contact plunger, the pressurization of the ignited pyrotechnic charge on the contact plunger taking place via the insulation plunger. In a preferred embodiment, the diameter of the contact pin is equal to the diameter of the insulation stamp. This has the advantage that, after the pyrotechnic charge has been ignited, the insulation stamp presses the contact bolt out of its contact position into an insulation position and advantageously assumes almost the contact position of the insulation stamp. If the diameter of the insulation stamp is the same as that of the contact bolt, after the pyrotechnic charge has been ignited, the insulation stamp sits with a press fit in the uppermost conductor rail. It is important here that the insulation stamp, after ignition, is permanently connected to at least one of the busbars, so that it is not possible to restore the initial state. This is an important security aspect.

Der Isolationsstempel kann zur Bildung dieser unlösbaren Verbindung auch vorteilhafterweise leicht konisch ausgebildet sein. Es genügt hierbei, wenn das der obersten Stromschiene abgewandte Ende des Isolationsstempels leicht konisch ausgebildet ist.The insulation stamp can also advantageously be slightly conical to form this permanent connection. It is sufficient if the end of the insulation stamp facing away from the uppermost busbar is of slightly conical design.

In bevorzugter Ausführungsform befinden sich der Kontaktbolzen, der Isolationsstempel sowie die Bohrungen in den Stromschienen in einer Gehäusebohrung. Die pyrotechnische Ladung bildet vorteilhafterweise das Verschlußstück der Gehäusebohrung. Hierdurch ist ein hermetisch dichter Raum geschaffen.In a preferred embodiment, the contact pin, the insulation stamp and the bores in the busbars are located in a housing bore. The pyrotechnic charge advantageously forms the closure piece of the housing bore. This creates a hermetically sealed space.

Bei der Abschaltung von hohen Strömen bildet sich üblicherweise zwischen den Trennstellen ein Lichtbogen aus. Bei dem hier vorgestellten Hochstromsicherungselement wirkt der Gasdruck der pyrotechnischen Ladung der Ausbildung eines Lichtbogens entgegen (Gesetz von Paschen).When high currents are switched off, an arc usually forms between the separation points. In the high-current fuse element presented here, the gas pressure of the pyrotechnic charge counteracts the formation of an arc (Paschen's law).

Zum Druckausgleich ist die Gehäusebohrung an ihrem den Kontaktbolzen in der Isolierstellung aufnehmenden Ende mit einer Entlüftungsbohrung versehen. Zweckmäßigerweise ist die Entlüftungsbohrung von außen mit einem sichtbaren Stopfen verschlossen, der beim Entweichen des Druckgases ausgestoßen oder zerstört wird und dadurch als Kennmelder funktioniert. Es können jedoch auch andere Ausbildungen eines Kennmelders verwendet werden.To equalize the pressure, the housing bore is provided with a ventilation bore at its end receiving the contact bolt in the insulating position. The vent hole is expediently closed from the outside with a visible stopper which is expelled or destroyed when the compressed gas escapes and thereby functions as an indicator. However, other designs of a detector can also be used.

Als pyrotechnische Ladung werden in bevorzugter Ausbildungsform Anzündelemente verwendet, wie sie z. B. bei Druckgasgeneratoren für Airbag's eingesetzt werden.As a pyrotechnic charge igniter elements are used in a preferred embodiment, as z. B. be used in gas generators for airbags.

In einer bevorzugten Ausführungsform ist in das Hochstromsicherungselement eine Auslöseelektronik integriert, die bei einer Überschreitung des Stroms durch das Hochstromsicherungselement über einen vorgegebenen Schwellenwert automatisch die Zündung der pyrotechnischen Ladung einleitet.In a preferred embodiment, trip electronics are integrated in the high-current fuse element, which trigger when the current is exceeded by the high-current fuse element automatically initiates the ignition of the pyrotechnic charge via a predetermined threshold value.

Vorteilhafterweise ist die Auslöseelektronik modulförmig auf das Hochstromsicherungselement aufgesteckt.The trigger electronics are advantageously plugged onto the high-current fuse element in a module-like manner.

Weitere Merkmale der Erfindung ergeben sich aus den Figuren, die nachfolgend eingehend beschrieben sind. Es zeigt:

Fig.1
eine Außenansicht eines erfindungsgemäßen Hochstromsicherungselementes,
Fig.2
das Hochstromsicherungselement gemäß Fig.1 mit aufgesteckter Auslöseelektronik für Gleichstrom (Fig.2a) und die modulförmige Auslöseelektronik alleine (Fig.2b),
Fig.3
das Hochstromsicherungselement gemäß Fig.1 mit aufgesteckter Auslöseelektronik für Wechselstrom (Fig.3a) und die modulförmige Auslöseelektronik alleine (Fig.3b),
Fig.4
im Schnitt das Hochstromsicherungselement vor der Auslösung und
Fig.5
im Schnitt das Hochstromsicherungselement nach der Auslösung.
Further features of the invention result from the figures, which are described in detail below. It shows:
Fig. 1
an external view of a high-current fuse element according to the invention,
Fig. 2
the high-current fuse element according to Figure 1 with attached trigger electronics for direct current (Fig.2a) and the module-shaped trigger electronics alone (Fig.2b),
Fig. 3
the high-current fuse element according to Figure 1 with attached trigger electronics for alternating current (Fig.3a) and the module-shaped trigger electronics alone (Fig.3b),
Fig. 4
on average the high-current fuse element before tripping and
Fig. 5
on average the high-current fuse element after tripping.

Fig.1 zeigt eine Ausführungsform eines erfindungsgemäßen Hochstromsicherungselementes 1. Das Hochstromsicherungselement 1 besteht aus einem Gehäuse 10, aus dem zwei Stromschienen 4a, 4b herausragen. An diesen Stromschienen 4a, 4b sind Stromleiter 3,3' eines Stromkreises, der gesichert werden soll, befestigt. Auf dem stirnseitigen Deckel 11 des Gehäuses 10 ist mittig eine Buchse 14 angeordnet, die mit einer in dieser Figur nicht gezeigten Auslöseelektronik verbunden werden kann. Im Inneren des Gehäuses 10 ist eine pyrotechnische Trennvorrichtung angeordnet, die bei einem Signal der Auslöseelektronik die elektrisch leitende Verbindung der beiden Stromschienen 4a, 4b kappt, d.h. unterbricht.1 shows an embodiment of a high-current fuse element 1 according to the invention. The high-current fuse element 1 consists of a housing 10 from which two busbars 4a, 4b protrude. Current conductors 3, 3 'of a circuit which is to be secured are fastened to these busbars 4a, 4b. On the front cover 11 of the housing 10, a socket 14 is arranged in the center, which with a not shown in this figure Trigger electronics can be connected. Arranged in the interior of the housing 10 is a pyrotechnic separating device which cuts, ie interrupts, the electrically conductive connection of the two busbars 4a, 4b when the triggering electronics signal is given.

Bevor auf die besondere Ausbildung bzw. Anordnung der Auslöseelektronik anhand der Fig. 2,3 eingegangen wird, wird der innere Aufbau des Hochstromsicherungselementes 1 anhand der Figuren 4,5 beschrieben.Before going into detail on the special design or arrangement of the tripping electronics with reference to FIGS. 2, 3, the internal structure of the high-current fuse element 1 is described with reference to FIGS. 4, 5.

Fig.4 zeigt im Schnitt das Hochstromsicherungselement 1 vor der Auslösung. In einem Block 12 aus einem elektrisch nicht leitenden Material ist eine Gehäusebohrung 7 als Sacklochbohrung eingebracht. An ihrer offenen Stirnseite ist die Gehäusebohrung 7 mit einem Verschlußstück 13 verschlossen. Das Verschlußstück 13 kann z.B. eingeklebt, eingeklemmt oder eingeschweißt werden. In dem Verschlußstück 13 ist eine pyrotechnische Ladung 2 bzw. ein Anzündelement eingesetzt. Bei Zündung erzeugt die pyrotechnische Ladung 2 ein Druckgas. Die pyrotechnische Ladung 2 ist über einen nicht gezeigten Anschluß mit der Buchse 14 auf dem Deckel 11 (siehe Fig.1) des Hochstromsicherungselementes verbunden.4 shows a section of the high-current fuse element 1 before tripping. In a block 12 made of an electrically non-conductive material, a housing bore 7 is made as a blind hole. At its open end face, the housing bore 7 is closed with a closure piece 13. The closure piece 13 can e.g. glued, pinched or welded. A pyrotechnic charge 2 or an ignition element is inserted in the closure piece 13. When ignited, the pyrotechnic charge 2 generates a compressed gas. The pyrotechnic charge 2 is connected via a connection, not shown, to the socket 14 on the cover 11 (see FIG. 1) of the high-current fuse element.

In dem Block 12 sind zwei Stromschienen 4a, 4b eingeführt, welche die Gehäusebohrung 7 durchragen und mit Abstand übereinander angeordnet sind. Der Abstand der beiden Stromschienen 4a, 4b voneinander ist so groß gewählt, daß ein Spannungsüberschlag nach erfolgter Trennung ausgeschlossen ist. In den beiden Stromschienen 4a, 4b ist jeweils eine Bohrung angeordnet, die dem Durchmesser der Gehäusebohrung 7 entspricht, wobei diese Bohrungen einen Teil der Wand der Gehäusebohrung 7 bilden.In the block 12, two busbars 4a, 4b are inserted, which project through the housing bore 7 and are arranged one above the other at a distance. The distance between the two busbars 4a, 4b is so large that a voltage flashover after separation has been ruled out. A hole corresponding to the diameter of the housing bore 7 is arranged in each of the two busbars 4a, 4b, these holes forming part of the wall of the housing bore 7.

Elektrisch leitend verbunden sind die beiden Stromschienen 4a, 4b durch einen Kontaktbolzen 5, der mit Preßsitz sowohl in der oberen 4a als auch in der unteren Stromschiene 4b eingesetzt ist. Die Länge des Kontaktbolzens 5 ist gleich dem Abstand der beiden Stromschienen 4a, 4b voneinander plus die Dicke der beiden Stromschienen 4a, 4b. Im Bereich der Kontaktierung mit den Stromschienen 4a, 4b weist der Kontaktbolzen 5 eine nicht gezeigte Rändelung auf, so daß definiert viele kleine Kontaktstellen bestehen, die eine gleichmäßige Stromverteilung bewirken und gewährleisten.The two busbars 4a, 4b are connected in an electrically conductive manner by means of a contact pin 5, which is press-fitted both in the upper part 4a and in the lower conductor rail 4b. The length of the contact pin 5 is equal to the distance between the two busbars 4a, 4b from each other plus the thickness of the two busbars 4a, 4b. In the area of contacting with the busbars 4a, 4b, the contact pin 5 has a knurling (not shown), so that there are a defined number of small contact points which bring about and ensure a uniform current distribution.

Zwischen dem Kontaktbolzen 5 und der pyrotechnischen Ladung 2 ist ein Isolationsstempel 6 aus einem elektrisch nicht leitenden Material , wie z.B. Glasfaser oder ein Hartkunststoff. Der Isolationsstempel 6 hat denselben Durchmesser wie der Kontaktbolzen 5. Seine Länge ist um die Dicke einer Stromschiene 4b gegenüber der Länge des Kontaktbolzens 5 verringert. Unterhalb des Kontaktbolzens 5 ist ein Aufnahmeraum 15 in der Gehäusebohrung 7 zur Aufnahme des Kontaktbolzens 5 nach erfolgter Zündung der pyrotechnischen Ladung 2 vorgesehen. Die Länge des Aufnahmeraums 15 ist so gewählt, daß nach erfolgter Zündung der Kontaktbolzen 5 auf der unteren Stirnseite der Gehäusebohrung 7 und mit seinem anderen Ende noch in der unteren Stromschiene 4b sitzt (siehe Fig.5).Between the contact pin 5 and the pyrotechnic charge 2 there is an insulation stamp 6 made of an electrically non-conductive material, such as e.g. Glass fiber or a hard plastic. The insulation stamp 6 has the same diameter as the contact pin 5. Its length is reduced by the thickness of a busbar 4b compared to the length of the contact pin 5. Below the contact pin 5, a receiving space 15 is provided in the housing bore 7 for receiving the contact pin 5 after the pyrotechnic charge 2 has been ignited. The length of the receiving space 15 is selected so that after the ignition of the contact pin 5 on the lower end face of the housing bore 7 and with its other end it is still seated in the lower conductor rail 4b (see FIG. 5).

Zur Druckentlastung ist die Gehäusebohrung 7 an der unteren Stirnseite mit einer Entlüftungsbohrung 8 versehen, die bevorzugt über einen Knick in die Atmosphäre führt. Von Außen ist die Entlüftungsbohrung 8 vorteilhafterweise mit einem nicht gezeigten Stopfen verschlossen, der durch den Druckstoß bei der Zündung ausgestoßen oder zerstört wird und dadurch als Kennmelder bzw. Anzeiger funktioniert.To relieve pressure, the housing bore 7 is provided on the lower end face with a vent hole 8, which preferably leads into the atmosphere via a kink. From the outside, the vent hole 8 is advantageously closed with a plug, not shown, which is expelled or destroyed by the pressure surge during ignition and thereby functions as a detector or indicator.

Die Enden der Stromschienen 4a, 4b sind mit Bohrungen 18 versehen, so daß leicht Stromleiter 3,3' (siehe Fig.1) zu befestigen sind, z.B. durch eine Schraubverbindung.The ends of the busbars 4a, 4b are provided with bores 18 so that current conductors 3, 3 '(see FIG. 1) can be easily attached, for example by means of a screw connection.

Bei der Zündung der pyrotechnischen Ladung 2 entsteht ein Druckgas, welches auf die obere Stirnseite des Isolationsstempels 6 eine Kraft ausübt, wodurch dieser in Richtung Kontaktbolzen 5 beschleunigt wird. Aufgrund der Krafteinwirkung durch den Isolationsstempel 6 wird der Kontaktbolzen 5 aus seinem Preßsitz in der Bohrung der Stromschienen 4a, 4b verschoben und gelangt in den Aufnahmeraum 15.When the pyrotechnic charge 2 is ignited, a compressed gas is generated which exerts a force on the upper end face of the insulation plunger 6, as a result of which this is accelerated in the direction of the contact pin 5. Due to the action of force by the insulation stamp 6, the contact pin 5 is displaced from its press fit in the bore of the busbars 4a, 4b and reaches the receiving space 15.

Fig.5 zeigt im Schnitt das Hochstromsicherungselement nach der Auslösung. Der Kontaktbolzen 5 sitzt auf dem Boden der Gehäusebohrung 7 auf und hängt mit seinem anderen Ende noch in der unteren Stromschiene 4b. Mit "oben" ist die Richtung zur pyrotechnischen Ladung 2 und mit "unten" die Richtung zur Entlüftungsbohrung 8 gemeint.5 shows in section the high-current fuse element after tripping. The contact pin 5 sits on the bottom of the housing bore 7 and hangs with its other end in the lower conductor rail 4b. "Up" means the direction to the pyrotechnic charge 2 and "down" the direction to the vent hole 8.

Der Isolationsstempel 6 nimmt nach erfolgter Zündung nahezu die ursprüngliche Stellung (Kontaktstellung) des Kontaktbolzens 5 ein, wobei der Isolationsstempel 6 an die untere Stromschiene 4b angrenzt, jedoch nicht in die Bohrung in der Stromschiene 4b hineinragt. Ein Außen auf die Entlüftungsbohrung 8 aufgesteckter Stopfen ist durch den Druckstoß des entweichenden Gases ausgestoßen oder zerstört, so daß von Außen sichtbar ist, daß eine Zündung erfolgt ist.After ignition, the insulation stamp 6 almost assumes the original position (contact position) of the contact bolt 5, the insulation stamp 6 adjoining the lower busbar 4b, but not protruding into the bore in the busbar 4b. An outside of the vent hole 8 plug is expelled or destroyed by the pressure surge of the escaping gas, so that it is visible from the outside that ignition has taken place.

Fig.2a zeigt das Hochstromsicherungselement 1 mit aufgesteckter Auslöseelektronik 9 für Gleichstrom und Wechselstrom. Fig.2b zeigt die Auslöseelektronik 9 alleine. Auf der Unterseite der Auslöseelektronik 9 ist ein Stecker (nicht gezeigt) angeordnet, der in die Buchse 14 (siehe Fig.1) gesteckt ist. Von der Auslöseelektronik 9 gehen zwei metallische Abgreifer 16 bis auf die Stromschienen 4a, 4b hinab und haben mit diesen elektrischen Kontakt. Zweckmäßigerweise haben die Abgreifer 16 einen Stift, der in eine Vertiefung der jeweiligen Stromschienen hineinragt, so daß ein verbesserter elektrischer Kontakt gegeben ist. Auf der Oberseite der Auslöseelektronik 9 ist eine Buchse 17 angeordnet, durch die das Hochstromsicherungselement auch von Außen zündbar ist. Die in den Fig. 2a, 2b gezeigte Auslöseelektronik ist für Gleichstrom gedacht. Über die beiden Abgreifer 16 wird der Spannungsabfall zwischen den beiden Stromschienen 4a, 4b gemessen. Bei Überschreiten eines vorgegebenen Wertes zündet die Auslöseelektronik 9 über die Buchse 14 (siehe Fig.1) die pyrotechnische Ladung 2. Es kann auch zweckmäßig sein, den Deckel 11 mit der Buchse 14 nicht vorzusehen und dafür die Auslöseelektronik 9 direkt auf dem Gehäuse 10 zu befestigen.2a shows the high-current fuse element 1 with attached trigger electronics 9 for direct current and alternating current. 2b shows the trigger electronics 9 alone. A plug (not shown) is arranged on the underside of the release electronics 9 and is inserted into the socket 14 (see FIG. 1). From the trigger electronics 9, two metallic taps 16 go down to the busbars 4a, 4b and have electrical contact with them. Appropriately, the taps 16 have a pin which projects into a recess in the respective busbars, so that there is an improved electrical contact. On the top of the trigger electronics 9, a socket 17 is arranged through which the high-current fuse element can also be ignited from the outside. The trigger electronics shown in FIGS. 2a, 2b is intended for direct current. The voltage drop between the two busbars 4a, 4b is measured via the two taps 16. When a predetermined value is exceeded, the trigger electronics 9 ignite the pyrotechnic charge 2 via the socket 14 (see FIG. 1). It may also be expedient not to provide the cover 11 with the socket 14 and instead trigger the trigger electronics 9 directly on the housing 10 fasten.

In den Fig.3a, 3b ist eine Auslöseelektronik 9 für Wechselstrom gezeigt. Auch diese Auslöseelektronik 9 ist wie schon in Fig.2a, 2b gezeigt, modulartig auf das in Fig.1 gezeigte Grundmodul aufgesteckt. Bei Wechselstrom wird die Höhe eines induzierten Stroms gemessen. Hierzu ist seitlich an der Auslöseelektronik 9 eine Spule 19 bzw. ein Wechselstromtransformator in einer Box 18 angeordnet. Die Spule 19 umgreift eine der Stromschienen. Der in der Spule 19 induzierte Strom wird in der Auslöseelektronik 9 ausgewertet und bei Überschreiten eines vorgegebenen Wertes wird die pyrotechnische Ladung über die Buchse 14 (siehe Fig.1) gezündet. Gleichzeitig dient der in der Spule 19 induzierte Wechselstrom zur Spannungsversorgung der Auslöseelektronik. Die Elektronik besteht aus Standardelementen.3a, 3b, trigger electronics 9 for alternating current are shown. As already shown in FIGS. 2a, 2b, this trigger electronics 9 is also plugged into the basic module shown in FIG. With alternating current, the level of an induced current is measured. For this purpose, a coil 19 or an AC transformer is arranged in a box 18 on the side of the trigger electronics 9. The coil 19 engages around one of the busbars. The current induced in the coil 19 is evaluated in the trigger electronics 9 and when a predetermined value is exceeded, the pyrotechnic charge is ignited via the socket 14 (see FIG. 1). At the same time, the alternating current induced in the coil 19 serves to supply the trigger electronics with voltage. The electronics consist of standard elements.

Claims (12)

Pyrotechnisches Hochstromsicherungselement (1), bei dem eine sich in dem zu sichernden Stromkreis befindende Stromleitbahn infolge der Zündung einer pyrotechnischen Ladung (2) unterbrochen wird, wenn die Stromstärke im Stromkreis einen Schwellenwert übersteigt, dadurch gekennzeichnet, daß das Hochstromsicherungselement (1) aus einem in den zu sichernden Stromkreis einbaubaren separaten Bauteil besteht, an das die durchtrennten Stromleiter (3,3') angeschlossen werden.Pyrotechnic high-current fuse element (1), in which a current path in the circuit to be secured is interrupted due to the ignition of a pyrotechnic charge (2) when the current strength in the circuit exceeds a threshold value, characterized in that the high-current fuse element (1) consists of an in there is a separate component which can be built in to be secured and to which the severed current conductors (3,3 ') are connected. Hochstromsicherungselement nach Anspruch 1, dadurch gekennzeichnet, daß das Hochstromsicherungselement (1) zwei sich an ihrem Ende mit Abstand überlappende Stromschienen (4a, 4b) aufweist, die durch einen den Abstand überbrückenden Kontaktbolzen (5) miteinander elektrisch leitend verbunden sind, und daß der Kontaktbolzen (5) durch die Zündung der pyrotechnischen Ladung (2) aus der Kontaktstellung in eine Isolierstellung gebracht wird.High-current fuse element according to Claim 1, characterized in that the high-current fuse element (1) has two busbars (4a, 4b) which overlap at one end at a distance and which are electrically conductively connected to one another by a contact pin (5) bridging the distance, and in that the contact pin (5) is brought from the contact position into an isolating position by the ignition of the pyrotechnic charge (2). Hochstromsicherungselement nach Anspruch 2, dadurch gekennzeichnet, daß der Kontaktbolzen (5) mit Preßsitz in einer die beiden Stromschienen (4a, 4b) durchragende Bohrung angeordnet ist.High-current fuse element according to Claim 2, characterized in that the contact bolt (5) is arranged with a press fit in a bore projecting through the two busbars (4a, 4b). Hochstromsicherungselement nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß in Achsialrichtung an den Kontaktbolzen (5) angrenzend ein Isolationsstempel (6) angeordnet ist und die Druckbeaufschlagung der gezündeten pyrotechnischen Ladung (2) auf den Kontaktbolzen (5) über den Isolationsstempel (6) erfolgt.High-current fuse element according to Claim 2 or 3, characterized in that an insulation stamp (6) is arranged adjacent to the contact bolt (5) in the axial direction and the pressurization of the ignited pyrotechnic charge (2) on the contact bolt (5) takes place via the insulation stamp (6) . Hochstromsicherungselement nach Anspruch 4, dadurch gekennzeichnet, daß der Durchmesser des Kontaktbolzens (5) gleich dem Durchmesser des Isolationsstempels (6) ist.High-current fuse element according to Claim 4, characterized in that the diameter of the contact bolt (5) is equal to the diameter of the insulation stamp (6). Hochstromsicherungselement nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß nach erfolgter Zündung der pyrotechnischen Ladung (2) der Isolationsstempel (6) nahezu die Kontaktstellung des Kontaktbolzens (5) einnimmt.High-current fuse element according to Claim 4 or 5, characterized in that after the pyrotechnic charge (2) has been ignited, the insulation stamp (6) almost assumes the contact position of the contact bolt (5). Hochstromsicherungselement nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß der Kontaktbolzen (5) im Bereich der Kontaktierung mit den beiden Stromschienen (4a, 4b) eine Rändelung aufweist.High-current fuse element according to one of Claims 2 to 6, characterized in that the contact bolt (5) has knurling in the area of contact with the two busbars (4a, 4b). Hochstromsicherungselement nach einem der Ansprüche 3 bis 7, dadurch gekennzeichnet, daß sich der Kontaktbolzen (5), der Isolationsstempel (6) sowie die Bohrungen in den Stromschienen (4a, 4b) in einer Gehäusebohrung (7) befinden.High-current fuse element according to one of Claims 3 to 7, characterized in that the contact bolt (5), the insulation stamp (6) and the bores in the busbars (4a, 4b) are located in a housing bore (7). Hochstromsicherungselement nach Anspruch 8, dadurch gekennzeichnet, daß die Gehäusebohrung (7) an ihrem den Kontaktbolzen (5) in der Isolierstellung aufnehmenden Ende mit einer Entlüftungsbohrung (8) versehen ist.High-current fuse element according to Claim 8, characterized in that the housing bore (7) is provided with a ventilation bore (8) at its end which receives the contact bolt (5) in the insulating position. Hochstromsicherungselement nach Anspruch 9, dadurch gekennzeichnet, daß die Entlüftungsbohrung (8) mit einem Stopfen verschlossen ist, der bei Entweichen des Druckgases ausgestoßen oder zerstört wird und dadurch als Kennmelder funktioniert.High-current fuse element according to claim 9, characterized in that the vent hole (8) is closed with a stopper which is expelled or destroyed when the compressed gas escapes and thereby functions as an indicator. Hochstromsicherungselement nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß in das Hochstromsicherungselement (1) eine Auslöseelektronik (9) integriert ist, die bei einer Überschreitung des Stroms durch das Hochstromsicherungselement (1) über einen vorgegebenen Schwellenwert automatisch die Zündung der pyrotechnischen Ladung (2) einleitet.High-current fuse element according to one of claims 1 to 10, characterized in that in the high-current fuse element (1) a trip electronics (9) is integrated, which when the current is exceeded by the high-current fuse element (1) automatically initiates the ignition of the pyrotechnic charge (2) via a predetermined threshold value. Hochstromsicherungselement nach Anspruch 11, dadurch gekennzeichnet, daß die Auslöseelektronik (9) modulförmig auf das Hochstromsicherungselement (1) aufgesteckt ist.High-current fuse element according to Claim 11, characterized in that the triggering electronics (9) are plugged onto the high-current fuse element (1) in module form.
EP95109677A 1994-06-28 1995-06-22 Pyrotechnic excess current protection element Expired - Lifetime EP0690466B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4422177 1994-06-28
DE4422177A DE4422177A1 (en) 1994-06-28 1994-06-28 High-voltage pyrotechnic fuse element

Publications (2)

Publication Number Publication Date
EP0690466A1 true EP0690466A1 (en) 1996-01-03
EP0690466B1 EP0690466B1 (en) 1998-12-23

Family

ID=6521443

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95109677A Expired - Lifetime EP0690466B1 (en) 1994-06-28 1995-06-22 Pyrotechnic excess current protection element

Country Status (7)

Country Link
US (1) US5783987A (en)
EP (1) EP0690466B1 (en)
JP (1) JPH0845405A (en)
KR (1) KR960003011A (en)
CZ (1) CZ286622B6 (en)
DE (2) DE4422177A1 (en)
ES (1) ES2125522T3 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997041582A1 (en) * 1996-04-27 1997-11-06 Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik Pyrotechnic switching element for electric circuits
EP1464544A2 (en) * 2003-04-03 2004-10-06 Dynamit Nobel AIS GmbH Automotive Ignition Systems Housing with a busbar for a separation device
FR2953322A1 (en) * 2009-11-27 2011-06-03 Snpe Materiaux Energetiques Electrical switch for forming circuit-breaker to open defective electrical circuit for insulating components, has upstream stud released from conducting portion of sliding drawer when drawer is in position
WO2014001713A1 (en) * 2012-06-29 2014-01-03 Herakles Electrical switch forming a fast actuation circuit breaker
WO2016015719A3 (en) * 2014-07-30 2016-04-28 Peter Lell Electric switch, in particular for high voltages and/or high currents
WO2021219286A1 (en) * 2020-04-30 2021-11-04 Auto-Kabel Management Gmbh Electrical protection device, method for producing a protection device, and method for operating an electrical protection device

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19712387B4 (en) * 1996-04-27 2005-12-08 Delphi Technologies, Inc., Troy Pyrotechnic switching element for electrical circuits
DE19616993A1 (en) * 1996-04-27 1997-10-30 Dynamit Nobel Ag Pyrotechnic fuse element for circuits
DE19728658A1 (en) * 1997-07-04 1999-01-07 Dynamit Nobel Ag Pyrotechnic active element
DE19817133A1 (en) * 1998-04-19 1999-10-28 Lell Peter Power disconnecting switch for emergency use in high current circuits, especially vehicles
FR2788165B1 (en) * 1998-12-30 2001-02-02 Pyroalliance ELECTRIC CONTACTOR WITH PYROTECHNIC OPERATION
JP3691299B2 (en) * 1999-08-23 2005-09-07 矢崎総業株式会社 Gas power shut-off device
US6542063B2 (en) * 2001-01-31 2003-04-01 Nippon Seisne Cable, Ltd. Electric fuse
DE10217382B4 (en) * 2002-04-18 2004-07-15 Siemens Ag Electrical line for preventing a stable arc, system with such a line
DE102004008120A1 (en) * 2003-02-26 2004-11-25 Dynamit Nobel Ais Gmbh Automotive Ignition Systems Pyromechanical separating device with specially shaped current conducting rail has cable connectors at both end pieces at right angles to plane of separating point formed by conductor narrow point
US6762670B1 (en) * 2003-04-10 2004-07-13 Chun-Chang Yen Fuse apparatus with explosion-proof structure
US7239225B2 (en) * 2003-10-17 2007-07-03 Special Devices, Inc. Pyrotechnic circuit breaker
US7123124B2 (en) * 2003-10-17 2006-10-17 Special Devices, Inc. Pyrotechnic circuit breaker
CN101138062B (en) * 2004-09-15 2010-08-11 力特保险丝有限公司 High voltage/high current fuse
ATE372598T1 (en) * 2005-04-08 2007-09-15 Auto Kabel Man Gmbh CIRCUIT BREAKERS FOR ELECTRICAL SUPPLY LINES OF MOTOR VEHICLES
DE102008055904B4 (en) * 2008-11-05 2018-03-22 Auto-Kabel Management Gmbh Plug connection for an occupant protection device
FR2953324B1 (en) * 2009-11-27 2012-06-08 Snpe Materiaux Energetiques ELECTRIC SWITCH WITH SLIDING DRAWER FORMING CIRCUIT BREAKER OR SWITCH
DE102010011150B4 (en) * 2010-03-11 2012-03-29 Auto-Kabel Managementgesellschaft Mbh Electrical fuse for motor vehicle power lines and method of manufacture of such fuse
FR2957452B1 (en) * 2010-03-15 2012-08-31 Snpe Materiaux Energetiques ELECTRIC SWITCH WITH PYROTECHNIC ACTUATION
DE102017203851B4 (en) * 2016-11-28 2018-06-14 Volkswagen Aktiengesellschaft Electrical fuse, method of operating an electrical fuse and electric traction network
DE102017202538A1 (en) 2017-02-16 2018-08-16 Audi Ag Safety device, motor vehicle with a safety device and method for operating a safety device
FR3098006B1 (en) * 2019-06-25 2021-07-09 Mersen France Sb Sas Electric circuit breaker
DE102019211725A1 (en) * 2019-08-05 2021-02-11 Audi Ag Safety device
US11443910B2 (en) * 2019-09-27 2022-09-13 Gigavac, Llc Contact levitation triggering mechanisms for use with switching devices incorporating pyrotechnic features
DE102020104935A1 (en) * 2020-02-25 2021-08-26 Bayerische Motoren Werke Aktiengesellschaft Disconnection device, high-voltage electrical system and motor vehicle
FR3111008B1 (en) * 2020-05-28 2022-09-23 Arianegroup Sas Plasma chamber cut-off device
EP3933878B1 (en) * 2020-07-03 2022-12-14 Munich Electrification GmbH Contactor device, energy storage system and method for controlling a contactor device
AT524104B1 (en) * 2020-07-15 2022-07-15 Astotec Automotive Gmbh Pyrotechnic current disconnector
US11610752B2 (en) * 2021-05-04 2023-03-21 Defang Yuan Fast smart circuit breaker
KR102425401B1 (en) * 2022-02-04 2022-07-27 성진엔테크(주) A Multi-axial Diamond Edge Endmill
JP2024036990A (en) * 2022-09-06 2024-03-18 株式会社ダイセル Electric circuit breaker device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4460886A (en) * 1982-11-01 1984-07-17 S&C Electric Company Pressure-operated switch for a current-limiting, high-voltage interrupting module
US4467307A (en) * 1983-08-17 1984-08-21 S&C Electric Company Pressure-operated switch for a high-voltage interrupting module
US4691085A (en) * 1985-12-19 1987-09-01 S&C Electric Company High voltage interrupting switch with improved contact connection arrangement and method
EP0243076A2 (en) * 1986-04-18 1987-10-28 G &amp; W ELECTRIC COMPANY Current interrupter
EP0563947A1 (en) * 1992-04-03 1993-10-06 Dynamit Nobel Aktiengesellschaft Protection method for circuits, particularly high current circuits, against over-current and protection element, particularly for high currents
DE9401486U1 (en) * 1994-01-29 1994-03-24 Ingenieurbüro für Elektrotechnik und Elektronik Jürgen Becker, 45739 Oer-Erkenschwick Electrical isolation device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1068801B (en) * 1959-11-12
US3118986A (en) * 1962-04-23 1964-01-21 Henry W Lewis Explosive actuated circuit breaker
GB1240035A (en) * 1968-01-20 1971-07-21 Fuji Electric Co Ltd Electric circuit breaker
FR2123227B1 (en) * 1971-01-28 1975-01-17 Ferraz & Cie Lucien
US4563556A (en) * 1984-03-28 1986-01-07 Michel Goldstein Internal combustion circuit breaker
JP2820703B2 (en) * 1989-01-25 1998-11-05 株式会社オリエント Temperature current sensor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4460886A (en) * 1982-11-01 1984-07-17 S&C Electric Company Pressure-operated switch for a current-limiting, high-voltage interrupting module
US4467307A (en) * 1983-08-17 1984-08-21 S&C Electric Company Pressure-operated switch for a high-voltage interrupting module
US4691085A (en) * 1985-12-19 1987-09-01 S&C Electric Company High voltage interrupting switch with improved contact connection arrangement and method
EP0243076A2 (en) * 1986-04-18 1987-10-28 G &amp; W ELECTRIC COMPANY Current interrupter
EP0563947A1 (en) * 1992-04-03 1993-10-06 Dynamit Nobel Aktiengesellschaft Protection method for circuits, particularly high current circuits, against over-current and protection element, particularly for high currents
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
DE9401486U1 (en) * 1994-01-29 1994-03-24 Ingenieurbüro für Elektrotechnik und Elektronik Jürgen Becker, 45739 Oer-Erkenschwick Electrical isolation device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997041582A1 (en) * 1996-04-27 1997-11-06 Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik Pyrotechnic switching element for electric circuits
EP1464544A2 (en) * 2003-04-03 2004-10-06 Dynamit Nobel AIS GmbH Automotive Ignition Systems Housing with a busbar for a separation device
EP1464544A3 (en) * 2003-04-03 2005-09-07 Delphi Technologies, Inc. Housing with a busbar for a separation device
FR2953322A1 (en) * 2009-11-27 2011-06-03 Snpe Materiaux Energetiques Electrical switch for forming circuit-breaker to open defective electrical circuit for insulating components, has upstream stud released from conducting portion of sliding drawer when drawer is in position
WO2014001713A1 (en) * 2012-06-29 2014-01-03 Herakles Electrical switch forming a fast actuation circuit breaker
FR2992770A1 (en) * 2012-06-29 2014-01-03 Herakles ELECTRIC SWITCH FORMING FAST ACTUATED CIRCUIT BREAKER
US9418807B2 (en) 2012-06-29 2016-08-16 Herakles Electrical switch forming a fast-acting circuit breaker
WO2016015719A3 (en) * 2014-07-30 2016-04-28 Peter Lell Electric switch, in particular for high voltages and/or high currents
US10236148B2 (en) 2014-07-30 2019-03-19 Peter Lell Electric switch, in particular for high voltages and/or high currents
WO2021219286A1 (en) * 2020-04-30 2021-11-04 Auto-Kabel Management Gmbh Electrical protection device, method for producing a protection device, and method for operating an electrical protection device
US11875960B2 (en) 2020-04-30 2024-01-16 Auto-Kabel Management Gmbh Electrical fuse device, method of manufacturing a fuse device and a method of operating an electrical fuse device

Also Published As

Publication number Publication date
CZ286622B6 (en) 2000-05-17
KR960003011A (en) 1996-01-26
DE59504611D1 (en) 1999-02-04
JPH0845405A (en) 1996-02-16
CZ162895A3 (en) 1997-08-13
EP0690466B1 (en) 1998-12-23
ES2125522T3 (en) 1999-03-01
US5783987A (en) 1998-07-21
DE4422177A1 (en) 1996-01-04

Similar Documents

Publication Publication Date Title
EP0690466B1 (en) Pyrotechnic excess current protection element
EP1407460B1 (en) Overvoltage arrester
EP0563947A1 (en) Protection method for circuits, particularly high current circuits, against over-current and protection element, particularly for high currents
DE69304334T2 (en) L-CLASS MELTFUSE
DE2526037B2 (en) Surge arresters
DE3409957C2 (en)
DE102020125293A1 (en) FLOATING RELEASE MECHANISMS FOR USE WITH SWITCHING DEVICES INCLUDING PYROTECHNICAL FEATURES
DE10052545A1 (en) Pyrotechnic security element
EP1458072B1 (en) Short-circuit device to be used in low and medium voltage arrangements
DE102017207736B3 (en) Pyrotechnic circuit breaker and supply network with a pyrotechnic circuit breaker
AT521150B1 (en) Pyrotechnic current separator
DE102018103018B4 (en) Breaking switching element with main and shunt current path
DE19506547C2 (en) Full-range converter fuse
DE3823747C2 (en)
EP3479391A1 (en) Short-circuiting device for use in low-voltage and medium-voltage systems for protecting parts and personnel
DE10209626B4 (en) Pyrotechnic switch
EP3223378B1 (en) Electrical circuit arrangement for a circuit arrangement for separating an electrical connection between two connection points
DE19827374C2 (en) Fuse element for electrical systems
DE3729454C2 (en)
EP3192093B1 (en) Multi-fuse arrangement
DE102013208656A1 (en) Fuse for high voltage electric circuit used in motor car, has straight conductor extended in form of straight line between main base and auxiliary base, and permanent magnet arranged to influence melting portion by magnetic field
EP3622549B1 (en) Pyrotechnic circuit breaker and supply grid with a pyrotechnic circuit breaker
DE102010015240B4 (en) Separating device for motor vehicle power conductors and their use
EP1047091B1 (en) Fuse particularly high power fuse
DE19519857C2 (en) Plug-in protection

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT

17P Request for examination filed

Effective date: 19960615

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: DYNAMIT NOBEL GMBH EXPLOSIVSTOFF- UND SYSTEMTECHNI

17Q First examination report despatched

Effective date: 19970624

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19981223

REF Corresponds to:

Ref document number: 59504611

Country of ref document: DE

Date of ref document: 19990204

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2125522

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20000512

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20000529

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20000622

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20000816

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010622

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010623

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20010622

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020403

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050622