EP3724908A1 - Pyrotechnische sicherung zum unterbrechen eines elektrischen stromkreises - Google Patents
Pyrotechnische sicherung zum unterbrechen eines elektrischen stromkreisesInfo
- Publication number
- EP3724908A1 EP3724908A1 EP18839527.1A EP18839527A EP3724908A1 EP 3724908 A1 EP3724908 A1 EP 3724908A1 EP 18839527 A EP18839527 A EP 18839527A EP 3724908 A1 EP3724908 A1 EP 3724908A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pts
- separation
- conductor
- separation claw
- claw
- 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.)
- Withdrawn
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
-
- 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
- H01H9/02—Bases, casings, or covers
-
- 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
-
- 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
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
-
- 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
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/446—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using magnetisable elements associated with the contacts
Definitions
- the invention relates to a pyrotechnic fuse (PTS) for interrupting an electrical circuit.
- PTS pyrotechnic fuse
- a potential application for such a pyrotechnic fuse is electric vehicles and other battery applications. Particularly in the case of an accident of an electric vehicle, it may be necessary to disconnect a circuit quickly and safely.
- Pyrotechnic fuses are known, especially those that are actively driven to trip. However, it has been shown that the known pyrotechnic fuses can not be separated with sufficient certainty in the entire range of voltages or currents possibly occurring in electromobility.
- the object of the invention is therefore to provide a pyrotechnic fuse (PTS) which achieves separation with higher safety at high voltages or currents.
- PTS pyrotechnic fuse
- the object is achieved by a pyrotechnic fuse according to claim 1. Further advantageous embodiments are subject of the dependent claims or described below.
- the pyrotechnic fuse can be activated by an electric igniter.
- the separation claw is solidly formed to withstand plasma flash for the required time.
- the separation claw preferably consists of insulating material. After separation into a chamber with extinguishing substance, for example extinguishing sand, the separation claw is preferably immersed and / or it is poured over with an extinguishing substance after separation from above.
- the residual pressure of the explosion of the explosive is used to accelerate the movement of the quenching substance into the separation chamber.
- a counterpart to the separation claw whose shape is complementary to that of the separation claw.
- the counterpart has the shape of a dome.
- a cylinder whose horizontal end face is arranged below the conductor is seated on the tip of the dome.
- the PTS has a permanent magnet and a magnetic field concentrator, which is arranged parallel to the conductor to be separated. This may cause plasma bursts that may be generated after separation to be deleted.
- two opposite side walls of the PTS are formed by plates consisting essentially of iron.
- two opposite sidewalls of the PTS are formed by plates which are biased so that plasma sparks, which possibly arise in the PTS after separation, can be erased by means of the magnetic field generated by them.
- a pressure relief valve can be realized by weakening the jacket.
- FIG. 1 shows a PTS according to the invention in a vertical cross section before triggering.
- the bottom surface 3 extends from each end face 1, 2 outwardly each have a rectangular metal plate. 5
- Both end walls 1, 2 are each connected to one end of a conductor, for example made of copper, which is part of the circuit, connectable.
- the side walls of the PTS which are not end walls 1, 2, comprise an insulation jacket 7 with suitable thermal properties.
- the PTS comprises a body 9 containing an explosive charge.
- the PTS can be activated by an electric igniter whose contacts 10 are located on the upper side of the interruption device.
- the PTS comprises a hollow cylinder 1 1, in which a piston 12 is located. Below the piston there is a separation claw 13. When the explosive charge explodes, the piston 12 and thus also the separation claw 13 are pressed downwards.
- FIG. 4 shows the interruption device after triggering of the PTS.
- the PTS has a permanent magnet 18 and a magnetic field concentrator 19 made of cold-rolled iron sheets or soft iron wires, which is arranged parallel to the conductor 20, which is to be severed. This is to be able to delete plasma bursts that may occur in the PTS after separation.
- the counterpart 21 is to the separating claw 13, the shape of which is complementary to that of the separating claw.
- the counterpart 21 is also made of insulating material.
- the counterpart has the shape of a dome on the top of a cylinder 22 is seated, the horizontal end face is disposed below the conductor 20.
- the separation claw 13 When the separation claw 13 is pushed down when the PTS is triggered, it cuts the conductor 20 in two places.
- the thus-cut piece of the conductor 20 is fixed by being pinched between the cylinder 22 at the tip of the counterpart and the separation claw, and deformed by the shape of the counterpart 21 and the separation claw 13, respectively, so that the isola - tion distance is maximum.
- FIGS. 2 and 3 show preferred embodiments of the separation claw 13.
Landscapes
- Fuses (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017011632.6A DE102017011632B4 (de) | 2017-12-15 | 2017-12-15 | Pyrotechnische Sicherung zum Unterbrechen eines elektrischen Stromkreises |
PCT/EP2018/084761 WO2019115691A1 (de) | 2017-12-15 | 2018-12-13 | Pyrotechnische sicherung zum unterbrechen eines elektrischen stromkreises |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3724908A1 true EP3724908A1 (de) | 2020-10-21 |
Family
ID=65199371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18839527.1A Withdrawn EP3724908A1 (de) | 2017-12-15 | 2018-12-13 | Pyrotechnische sicherung zum unterbrechen eines elektrischen stromkreises |
Country Status (4)
Country | Link |
---|---|
US (1) | US11177101B2 (de) |
EP (1) | EP3724908A1 (de) |
DE (1) | DE102017011632B4 (de) |
WO (1) | WO2019115691A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3099287B1 (fr) | 2019-07-25 | 2023-06-30 | Arianegroup Sas | Dispositif de coupure pyrotechnique |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1073577B (de) | 1954-05-22 | 1960-01-21 | FMAG Elektrizitats Gesellschart mbH Frankfurt/M | Schnellabschaltvoi richtung |
CH635461A5 (de) * | 1979-01-11 | 1983-03-31 | Bbc Brown Boveri & Cie | Starkstromschalter mit sprengausloesung. |
US4342978A (en) * | 1979-03-19 | 1982-08-03 | S&C Electric Company | Explosively-actuated switch and current limiting, high voltage fuse using same |
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 |
DE19749896A1 (de) | 1997-11-12 | 1999-06-02 | Knipping Kunststofftechnik Wer | Pyrotechnischer Sicherheitsschalter |
DE19817133A1 (de) * | 1998-04-19 | 1999-10-28 | Lell Peter | Powerswitch |
EP1263013A1 (de) * | 2001-06-01 | 2002-12-04 | Abb Research Ltd. | Sicherung |
US8653386B2 (en) * | 2007-09-27 | 2014-02-18 | Daikin Industries, Ltd. | Cutting apparatus, breaker, contactor, and electrical circuit breaker |
US20100218689A1 (en) | 2009-02-27 | 2010-09-02 | Mickelson Chad A | Screen for deep fat fryers |
DE102011014343A1 (de) | 2011-03-18 | 2012-09-20 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Sicherungsvorrichtung für eine Spannungsversorgung eines Kraftfahrzeugs |
JP5817685B2 (ja) | 2012-08-31 | 2015-11-18 | 豊田合成株式会社 | 導通遮断装置 |
JP6406189B2 (ja) | 2015-09-11 | 2018-10-17 | 豊田合成株式会社 | 導通遮断装置 |
AT517872B1 (de) | 2015-10-19 | 2017-08-15 | Hirtenberger Automotive Safety Gmbh & Co Kg | Pyrotechnische Trennvorrichtung |
US10361048B2 (en) | 2016-05-11 | 2019-07-23 | Eaton Intelligent Power Limited | Pyrotechnic circuit protection systems, modules, and methods |
FR3051282B1 (fr) | 2016-05-16 | 2021-05-21 | Herakles | Dispositif de coupure destine a etre relie a un circuit electrique |
DE102016122424B4 (de) * | 2016-11-22 | 2023-06-07 | Auto-Kabel Management Gmbh | Trennvorrichtung mit Lichtbogenunterbrechung |
DE102017119285A1 (de) * | 2017-02-01 | 2018-08-02 | Dehn + Söhne Gmbh + Co. Kg | Triggerbare Schmelzsicherung für Niederspannungsanwendungen |
US20190244778A1 (en) * | 2018-02-05 | 2019-08-08 | Ge Aviation Systems Llc | Conductor severing circuit breaker |
-
2017
- 2017-12-15 DE DE102017011632.6A patent/DE102017011632B4/de not_active Expired - Fee Related
-
2018
- 2018-12-13 WO PCT/EP2018/084761 patent/WO2019115691A1/de unknown
- 2018-12-13 US US16/772,503 patent/US11177101B2/en active Active
- 2018-12-13 EP EP18839527.1A patent/EP3724908A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2019115691A1 (de) | 2019-06-20 |
DE102017011632A1 (de) | 2019-06-19 |
US20210066010A1 (en) | 2021-03-04 |
DE102017011632B4 (de) | 2020-03-26 |
US11177101B2 (en) | 2021-11-16 |
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