EP0895644B1 - Element coupe-circuit pyrotechnique pour circuits - Google Patents

Element coupe-circuit pyrotechnique pour circuits Download PDF

Info

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
Authority
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
Application number
EP97921730A
Other languages
German (de)
English (en)
Other versions
EP0895644A1 (fr
Inventor
Heinz Kern
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 AG
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
Original Assignee
Dynamit Nobel AG
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
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, Dynamit Nobel GmbH Explosivstoff und Systemtechnik filed Critical Dynamit Nobel AG
Publication of EP0895644A1 publication Critical patent/EP0895644A1/fr
Application granted granted Critical
Publication of EP0895644B1 publication Critical patent/EP0895644B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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.

Landscapes

  • Fuses (AREA)

Claims (7)

  1. Elément coupe-circuit pyrotechnique destiné à des circuits électriques, comprenant
    au moins un conducteur (16) et
    un dispositif de coupure (18) actionnable par voie pyrotechnique avec au moins un élément de coupure (22) pour sectionner le conducteur (16) au nombre d'au moins un, l'élément de coupure (22), suite à l'allumage de la charge pyrotechnique (24), pouvant être déplacé en direction et au travers d'un tronçon de coupure (30) du conducteur (16), le conducteur (16) présentant une section qui est inférieure à la section en dehors dudit tronçon de coupure (30) du conducteur (16),
    caractérisé en ce que
    le conducteur (16) est formé d'une pièce,
    le tronçon de coupure (30) du conducteur (16) comporte une rainure qui est aménagée dans l'une de ses faces extérieures et s'étend sur toute la largeur du conducteur (16) et
    l'élément de coupure (22), au moins pendant le processus de coupure agit dans la rainure (28).
  2. Elément coupe-circuit pyrotechnique selon la revendication 1, caractérisé en ce que la rainure (28) est aménagée dans la face extérieure du conducteur (16) tournée vers l'élément de coupure (22).
  3. Elément coupe-circuit pyrotechnique selon la revendication 1 ou 2, caractérisé en ce que l'élément de coupure (22) au nombre d'au moins un, dans sa position d'origine depuis laquelle il peut être déplacé par allumage de la charge pyrotechnique (24) aux fins de sectionner le conducteur (16), est rentré dans la rainure (28).
  4. Elément coupe-circuit pyrotechnique selon une des revendications 1 à 3, caractérisé en ce que l'élément de coupure (22) au nombre d'au moins un est en un matériau électriquement isolant, notamment en une matière plastique.
  5. Elément coupe-circuit pyrotechnique selon une des revendications 1 à 4, caractérisé en ce que la section du conducteur (16) au niveau du tronçon de coupure (30) est inférieure à 50% de la section du conducteur (16) en dehors dudit tronçon de coupure (30).
  6. Elément coupe-circuit pyrotechnique selon la revendication 5, caractérisé en ce que la section du conducteur (16) au niveau du tronçon de coupure (30) est inférieure à 30% de la section du conducteur (16) en dehors dudit tronçon de coupure (30).
  7. Elément coupe-circuit pyrotechnique selon la revendication 5, caractérisé en ce que la section du conducteur (16) dans le tronçon de coupure (30) est comprise entre 5% et 15%, en particulier représente 10% de la section du conducteur (16) en dehors dudit tronçon de coupure (30).
EP97921730A 1996-04-27 1997-04-24 Element coupe-circuit pyrotechnique pour circuits Expired - Lifetime EP0895644B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19616993A DE19616993A1 (de) 1996-04-27 1996-04-27 Pyrotechnisches Sicherungselement für Stromkreise
DE19616993 1996-04-27
PCT/EP1997/002081 WO1997041581A1 (fr) 1996-04-27 1997-04-24 Element coupe-circuit pyrotechnique pour circuits

Publications (2)

Publication Number Publication Date
EP0895644A1 EP0895644A1 (fr) 1999-02-10
EP0895644B1 true EP0895644B1 (fr) 1999-11-10

Family

ID=7792706

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97921730A Expired - Lifetime EP0895644B1 (fr) 1996-04-27 1997-04-24 Element coupe-circuit pyrotechnique pour circuits

Country Status (3)

Country Link
EP (1) EP0895644B1 (fr)
DE (2) DE19616993A1 (fr)
WO (1) WO1997041581A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19749896A1 (de) * 1997-11-12 1999-06-02 Knipping Kunststofftechnik Wer Pyrotechnischer Sicherheitsschalter
DE19817133A1 (de) * 1998-04-19 1999-10-28 Lell Peter Powerswitch
DE19908578A1 (de) * 1999-02-27 2000-08-31 Moeller Gmbh Schaltantrieb für Schaltgeräte
DE19957261A1 (de) * 1999-11-19 2001-06-21 Siemens Ag Anordnung zur elektrischen Energieversorgung
EP1464544B1 (fr) 2003-04-03 2010-09-15 Delphi Technologies, Inc. Boîtier avec une barre conductrice pour un dispositif de sectionnement
DE102004011863A1 (de) * 2003-04-03 2004-10-14 Dynamit Nobel Ais Gmbh Automotive Ignition Systems Gehäuse mit Stromleiterschiene für ein Trennsystem
ATE376163T1 (de) 2003-04-30 2007-11-15 Delphi Tech Inc Gehäuse für eine pyromechanische trennvorrichtung mit integriertem anzündelement
FR2957452B1 (fr) * 2010-03-15 2012-08-31 Snpe Materiaux Energetiques Interrupteur electrique a actionnement pyrotechnique
DE102017119285A1 (de) 2017-02-01 2018-08-02 Dehn + Söhne Gmbh + Co. Kg Triggerbare Schmelzsicherung für Niederspannungsanwendungen
AT525379B1 (de) * 2019-07-12 2023-07-15 Astotec Automotive Gmbh Pyrotechnischer Stromtrenner
EP3800655A1 (fr) 2019-10-02 2021-04-07 Peter Lell Sectionneur rapide
AT523708B1 (de) * 2020-04-16 2021-11-15 Hirtenberger Automotive Safety Gmbh & Co Kg Pyrotechnischer Stromtrenner sowie Verfahren zu seiner Herstellung
GB2599740A (en) * 2020-10-09 2022-04-13 Eaton Intelligent Power Ltd Pyrotechnic switch and method for operating a pyrotechnic switch
CN113258540A (zh) * 2021-06-28 2021-08-13 西安中熔电气股份有限公司 一种控制电路断开及使储能元器件释能的电路控制装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
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 (da) * 1969-01-06 1972-10-23 Knudsen Nordisk Elect Sandfyldt elektrisk smeltesikring.
FR2159628A5 (fr) * 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 (de) * 1980-10-18 1982-01-21 Diehl GmbH & Co, 8500 Nürnberg Schutzschalter zur Unterbrechung eines Stromkreises unter Sprengwirkung
US4417519A (en) * 1981-06-04 1983-11-29 Mcdonnell Douglas Corporation Explosive switch
JP2542702B2 (ja) * 1989-09-29 1996-10-09 工業技術院長 高速大電流スイッチ
DE4211079A1 (de) * 1992-04-03 1993-10-07 Dynamit Nobel Ag Verfahren zum Sichern von Stromkreisen, insbesondere von hohen Strömen führenden Stromkreisen gegen Überströme und elektrisches Sicherungselement, insbesondere Hochstromsicherungselement
DE4422177A1 (de) * 1994-06-28 1996-01-04 Dynamit Nobel Ag Pyrotechnisches Hochstromsicherungselement

Also Published As

Publication number Publication date
DE19616993A1 (de) 1997-10-30
WO1997041581A1 (fr) 1997-11-06
DE59700700D1 (de) 1999-12-16
EP0895644A1 (fr) 1999-02-10

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