EP0895644A1 - Element coupe-circuit pyrotechnique pour circuits - Google Patents

Element coupe-circuit pyrotechnique pour circuits

Info

Publication number
EP0895644A1
EP0895644A1 EP97921730A EP97921730A EP0895644A1 EP 0895644 A1 EP0895644 A1 EP 0895644A1 EP 97921730 A EP97921730 A EP 97921730A EP 97921730 A EP97921730 A EP 97921730A EP 0895644 A1 EP0895644 A1 EP 0895644A1
Authority
EP
European Patent Office
Prior art keywords
current conductor
separating
pyrotechnic
cross
section
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
EP97921730A
Other languages
German (de)
English (en)
Other versions
EP0895644B1 (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 fuse element for circuits with at least one current conductor and a pyrotechnically operable separating device with at least one separating element for cutting through the at least one current conductor, the separating element being caused by the ignition of a pyrotechnic charge on a separating section of the current conductor can be moved to and through it and the current conductor is formed in one piece in the region of its separating section, as is known from DE 42 11 079 A1.
  • Pyrotechnically operating fuse elements for circuits are known, for example, from DE 42 11 079 AI and DE 44 22 177 AI.
  • a pyrotechnically operated separating device with a separating element cuts through a current conductor.
  • the fuse element according to DE 42 11 079 A1 the current conductor which is formed in one piece in the region of a separating section, on which the separating device acts, and with the same cross-section as in the rest of the region, severed by destruction.
  • a separating or punching element / tool is used for this.
  • a connecting part which is electrically conductively and non-positively and positively connected to two overlapping current conductor sections, is out of contact with at least one of the two current conductor sections due to the pyrotechnically operable separating device ⁇ brings.
  • the pyrotechnic charge or the like by means of an ignition pulse. ignited, which is generated when or the like by means of a detector. Measuring device a current is measured in the circuit to be secured, which is above a maximum value.
  • the known pyrotechnic fuse elements can be used to protect circuits against overcurrents, ie, protect them against currents which are above the nominal or continuous current.
  • the invention proposes a pyrotechnic fuse element for circuits, which is provided with at least one current conductor and a pyrotechnically operable separation device with at least one separation element, for severing the at least one current conductor, the separation element as a result of the ignition of a pyrotech African charge can be moved towards and through a separating section of the current conductor and the current conductor is formed in one piece in the area of its separating section, the current conductor having a cross-sectional area in the area of its separating section which is smaller than in the area outside the isolating section of the conductor.
  • the at least one current conductor is made smaller in cross section in the region of its separating section than outside this separating section.
  • the reduction in cross-section in the separating section is designed such that the voltage drop is negligibly small and the reduction in cross-section has practically no electrical effect.
  • the at least one current conductor can be cut with comparatively low forces, which is advantageous for the Size of the pyrotechnic fuse element according to the invention and the dimensioning of the pyrotechnic charge affects.
  • the fuse element according to the invention is triggered when it is detected by means of a current detector that a current above a threshold value is flowing in the circuit to be protected.
  • the separating section is designed as a recess made in the outer surface of the current conductor, in particular in the form of a groove.
  • This depression is expediently arranged in the side section of the outer surface of the current conductor facing the separating element.
  • the mutually opposite flanks of the depression serve as a guide for the separating element when it moves towards the separating section and through the current conductor.
  • the at least one separating element is already immersed in the recess in its starting position, from which it can be moved as a result of the ignition of the pyrotechnic charge to cut through the current conductor.
  • the cross-sectional area of the current conductor in the separating section is preferably approximately 50% or less than 50% and in particular less than 30% of the cross-sectional area of the current conductor outside the separating section.
  • the cross-sectional area of the current conductor in the separating section is most preferably 5% to 15% and in particular 10% of the cross-sectional area of the current conductor outside the separating section.
  • 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.
  • the moving mass can be reduced, which means lower material thicknesses and the use of inexpensive plastic materials.
  • the size of the pyrotechnic fuse element is relatively small.
  • the pyrotechnic security element has only a few individual parts.
  • the pyrotechnic charge need only be designed to be low.
  • FIG. 1 shows a cross-sectional view through a pyrotechnic securing element with the separating element in the starting position
  • Figs. 1 to 4 is an embodiment of the pyrotechnic fuse element 10 according to the invention in various cross-sectional views, on the one hand in the initial state with the current conductor not yet cut (FIGS. 1 and 2) and on the other hand in the state in which the current conductor is cut.
  • the pyro-technical securing element 10 is shown in the figures; for reasons of better clarity, the electronic circuitry for generating the ignition pulse for the pyrotechnic charge is missing.
  • the securing element 10 has a housing 12 made of, in particular, electrically non-conductive material, in which a cavity 14 is formed.
  • the electrical current conductor 16 which is led out of the housing 12 on both sides, extends through the cavity 14.
  • the circuit to be protected can be connected to the ends of the current conductor 16 that are led out.
  • a separating device 18 which can be operated by means of a pyro technology and which has a plastic piston 20.
  • the plastic piston 20 carries on its end facing the current conductor 16 a separating element 22 in the form of a plastic sword, which is preferably connected in one piece to the plastic piston 20.
  • the front end of the separating element 22 is immersed in a recess 28 in the current conductor 16.
  • This depression 28 which in the case of the exemplary embodiment is a groove which is rectangular in cross section and extends over the entire width of the current conductor 16, represents the separating section 30 of the current conductor 16, in the region of which the current conductor 16 can be severed by means of the separating device 18.
  • the depression 28 is introduced into that part 32 of the outer surface of the current conductor 16 which faces the separating device 18.
  • the separating element 22 is advanced through the separating section 30 of the current conductor 16 into the receiving space 34 when the securing element 10 is triggered.
  • this receiving space 34 also serves to receive that part 36 of the current conductor 16 within its separating section 30, which is separated by the separating element 22. In a way, the separating element 22 thus stamps out the part 36 from the separating section 30 of the current conductor 16.
  • the pyrotechnic fuse element 10 has been explained above using an example in which the current conductor 16 has a separating section 30 of reduced cross section.
  • the current conductor 16 could also have several, e.g. be provided with two separating sections, the separating element 22 then separating the middle part of the current conductor 16 between the two separating sections.

Landscapes

  • Fuses (AREA)

Abstract

L'invention concerne un élément coupe-circuit (10) pyrotechnique pour circuits, comportant au moins un conducteur (16). Cet élément coupe-circuit (10) pyrotechnique comprend en outre un sectionneur (18) actionnable de manière pyrotechnique, qui comprend au moins un élément (22) servant à séparer le conducteur (16) (au moins au nombre de un). Suite à la mise à feu de la charge pyrotechnique (24), l'élément de séparation (22) peut être déplacé en direction d'une section de séparation (30) du conducteur (16) et à travers ladite section. Dans la zone de sa section de séparation (30), le conducteur (16) se présente d'un seul tenant. Dans la zone de sa section de séparation (30), le conducteur (16) présente une surface de section transversale inférieure à celle située dans la zone se trouvant en dehors de sa section de séparation (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
DE19616993 1996-04-27
DE19616993A DE19616993A1 (de) 1996-04-27 1996-04-27 Pyrotechnisches Sicherungselement für Stromkreise
PCT/EP1997/002081 WO1997041581A1 (fr) 1996-04-27 1997-04-24 Element coupe-circuit pyrotechnique pour circuits

Publications (2)

Publication Number Publication Date
EP0895644A1 true EP0895644A1 (fr) 1999-02-10
EP0895644B1 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
EP1473536B1 (fr) * 2003-04-30 2007-10-17 Delphi Technologies, Inc. Boîtier pour dispositif de découpe pyrotechnique avec élément d'allumage intégré
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9741581A1 *

Also Published As

Publication number Publication date
EP0895644B1 (fr) 1999-11-10
WO1997041581A1 (fr) 1997-11-06
DE59700700D1 (de) 1999-12-16
DE19616993A1 (de) 1997-10-30

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