EP0895644B1 - Pyrotechnisches sicherungselement für stromkreise - Google Patents
Pyrotechnisches sicherungselement für stromkreise Download PDFInfo
- Publication number
- EP0895644B1 EP0895644B1 EP97921730A EP97921730A EP0895644B1 EP 0895644 B1 EP0895644 B1 EP 0895644B1 EP 97921730 A EP97921730 A EP 97921730A EP 97921730 A EP97921730 A EP 97921730A EP 0895644 B1 EP0895644 B1 EP 0895644B1
- 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
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)
Description
- Der mindestens eine Stromleiter ist einteilig ausgeführt, wodurch elektrische Kontaktzonen, die infolge von Temperatur, Fertigungstoleranzen, Feuchtigkeit oder Korrosion sich bezüglich ihres Übergangswiderstandes verändern können, vermieden sind.
- Die Herstellungskosten sind im Vergleich zu den bekannten pyrotechnischen Sicherungselementen wesentlich reduziert.
- Wegen der geringeren Trennkräfte kann die bewegte Masse reduziert werden, was geringere Materialstärken und die Verwendung kostengünstiger Kunststoffmaterialien ermöglicht.
- Die Baugröße des pyrotechnischen Sicherungselements ist relativ gering.
- Das pyrotechnische Sicherungselement weist lediglich wenige Einzelteile auf.
- Die pyrotechnische Ladung braucht lediglich gering ausgelegt zu sein.
- Es entstehen weniger Verlustleistungen.
- Es ist kaum Geräuschentwicklung zu verzeichnen.
- Fig. 1
- eine Querschnittsansicht durch ein pyrotechnisches Sicherungselement bei sich in der Ausgangsposition befindlichem Trennelement,
- Fig. 2
- einen Schnitt entlang der Linie II-II der Fig. 1,
- Fig. 3
- eine Schnittansicht des pyrotechnischen Sicherungselements bei durchtrenntem Stromleiter und
- Fig. 4
- eine Ansicht gemäß der Linie IV-IV der Fig. 3.
Claims (7)
- Pyrotechnisches Sicherungselement für Stromkreise, mitmindestens einem Stromleiter (16) undeiner pyrotechnisch betreibbaren Trennvorrichtung (18) mit mindestens einem Trennelement (22) zum Durchtrennen des mindestens einen Stromleiters (16), wobei das Trennelement (22) infolge der Zündung einer pyrotechnischen Ladung (24) auf einen Trennabschnitt (30) des Stromleiters (16) zu und durch diesen hindurch bewegbar ist und wobei der Stromleiter (16) eine Querschnittsfläche aufweist, die kleiner ist als im Bereich außerhalb des Trennabschnitts (30) des Stromleiters (16),daß der Stromleiter (16) einteilig ausgebildet ist,daß der Trennabschnitt (30) des Stromleiters (16) eine in einer seiner Außenseiten eingebrachte Nut (28) aufweist, die sich über die gesamte Breite des Stromleiters (16) erstreckt unddaß das Trennelement (22) zumindest während des Trennvorgangs in die Nut (28) eingreift.
- Pyrotechnisches Sicherungselement nach Anspruch 1, dadurch gekennzeichnet, daß die Nut (28) in der dem Trennelement (22) zugewandten Außenseite des Stromleiters (16) ausgebildet ist.
- Pyrotechnisches Sicherungselement nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das mindestens eine Trennelement (22) in seiner Ausgangsposition, aus der es heraus infolge der Zündung der pyrotechnischen Ladung (24) zum Durchtrennen des Stromleiters (16) bewegbar ist, in die Nut (28) eingetaucht ist.
- Pyrotechnisches Sicherungselement nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das mindestens eine Trennelement (22) aus einem elektrisch isolierenden Material, insbesondere einem Kunststoffmaterial besteht.
- Pyrotechnisches Sicherungselement nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Querschnittsfläche des Stromleiters (16) im Trennabschnitt (30) weniger als 50 % der Querschnittsfläche des Stromleiters (16) außerhalb des Trennabschnitts (30) beträgt.
- Pyrotechnisches Sicherungselement nach Anspruch 5, dadurch gekennzeichnet, daß die Querschnittsfläche des Stromleiters (16) im Trennabschnitt (30) weniger als 30 % der Querschnittsfläche des Stromleiters (16) außerhalb des Trennabschnitts (30) beträgt.
- Pyrotechnisches Sicherungselement nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß die Querschnittsfläche des Stromleiters (16) im Trennabschnitt (30) 5 % bis 15 %, insbesondere 10 % der Querschnittsfläche des Stromleiters (16) außerhalb des Trennabschnitts (30) beträgt.
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 (de) | 1996-04-27 | 1997-04-24 | Pyrotechnisches sicherungselement für stromkreise |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0895644A1 EP0895644A1 (de) | 1999-02-10 |
EP0895644B1 true EP0895644B1 (de) | 1999-11-10 |
Family
ID=7792706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97921730A Expired - Lifetime EP0895644B1 (de) | 1996-04-27 | 1997-04-24 | Pyrotechnisches sicherungselement für stromkreise |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0895644B1 (de) |
DE (2) | DE19616993A1 (de) |
WO (1) | WO1997041581A1 (de) |
Families Citing this family (14)
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 (de) | 2003-04-03 | 2010-09-15 | Delphi Technologies, Inc. | Gehäuse mit Stromleiterschiene für eine Trennvorrichtung |
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 (de) | 2019-10-02 | 2021-04-07 | Peter Lell | Schnelltrennschalter |
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)
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 (de) * | 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 |
-
1996
- 1996-04-27 DE DE19616993A patent/DE19616993A1/de not_active Withdrawn
-
1997
- 1997-04-24 DE DE59700700T patent/DE59700700D1/de not_active Expired - Fee Related
- 1997-04-24 EP EP97921730A patent/EP0895644B1/de not_active Expired - Lifetime
- 1997-04-24 WO PCT/EP1997/002081 patent/WO1997041581A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
DE19616993A1 (de) | 1997-10-30 |
WO1997041581A1 (de) | 1997-11-06 |
EP0895644A1 (de) | 1999-02-10 |
DE59700700D1 (de) | 1999-12-16 |
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