EP3698392A1 - Dispositif de court-circuit - Google Patents

Dispositif de court-circuit

Info

Publication number
EP3698392A1
EP3698392A1 EP17837864.2A EP17837864A EP3698392A1 EP 3698392 A1 EP3698392 A1 EP 3698392A1 EP 17837864 A EP17837864 A EP 17837864A EP 3698392 A1 EP3698392 A1 EP 3698392A1
Authority
EP
European Patent Office
Prior art keywords
electrical contact
contact element
movable contact
contact body
short
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.)
Pending
Application number
EP17837864.2A
Other languages
German (de)
English (en)
Inventor
Daniel BÖHME
Ingo Euler
Thomas KÜBEL
Steffen PIERSTORF
Daniel Schmitt
Frank Schremmer
Stefan Stegmeier
Torsten Stoltze
Marcus Wahle
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.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP3698392A1 publication Critical patent/EP3698392A1/fr
Pending 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
    • H01H39/004—Closing switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H79/00—Protective switches in which excess current causes the closing of contacts, e.g. for short-circuiting the apparatus to be protected

Definitions

  • the present invention relates to a
  • Short-circuiting device and a converter, in particular a Multilevelumrichter with such
  • Short-circuiting devices for shorting large cruun conditions such as capacitors in
  • Multilevel converters are subject to high demands in the closing moment, d. H. in the moment in which two electrical cal contact body with different electrical poten tial form a touch contact.
  • high voltages for example at 5000 V DC on a capacitor bank with several mF, for example 4-20 mF, it comes with an aluminum contact for igniting an arc and consequently excessive burnup of the closing element by the ignited during closing arc.
  • the short-circuiting device as a component is in
  • Multilevel converters needed to ensure the continued operation of such systems.
  • the now over-stressed at high voltages component essentially serves as a safety component.
  • the burn by the generated arc leads disadvantageous that no safe electrical con tact can be made.
  • a fire can be caused in case of non-recognition in plant operation.
  • the object is to provide a short-circuiting device for short-circuiting high powers, in which a stable electrical contact can be made.
  • a short-circuiting device for supply, which comprises a first electrical contact body and a second electrical contact body, which spaced from each other spatially. Furthermore, the short-circuiting device comprises a contact element which is movable between a disconnected position and a closed position and which is arranged at least partially on or within the second electrical contact body, does not provide an electrically conductive connection between the first and the second electrical contact body in the disconnected position and the first in the closed position and second electrical contact body by a Bermmux electrically conductive mitei nander connects. Furthermore, the
  • Short-circuiting means a drive device which moves the movable contact element of the second electrical contact body in the direction of the first electrical contact body of the release position in the closed position at a triggering.
  • the movable contact element comprises an insulating layer which is positioned on an end region of the movable contact element facing the first contact body and / or on a surface region of the first contact body which faces the end region of the contact element.
  • the first con tact body is then electrically isolated from the contact element or the second contact body.
  • the contact element may also be referred to as a bolt.
  • the short-circuiting device has the advantage that the arc is reduced or even prevented by the insulating layer applied to the contact element and / or to the first electrical contact body. This is due to the fact that the critical insulation voltage in air is exceeded much later.
  • the two electric con tact body and the contact element and the first electrical contact body have in the disconnected position or in Schellesmo ment time shortly before the formation of touch contact under different potentials.
  • the movable contact element is not provided with an insulation layer, it may be ignited, ie, the arc or breakdown between the movable contact element and the first electrical Contact bodies come.
  • the dielectric strength of air is approximately 3 kV / mm.
  • the movable contact element is preferably a movable, electrically conductive piston or an electrically conductive contact piston. Further preferably, it is in the movable contact element to a movable BewegMap Pacific and in the first and the second electrical contact bodies depending Weil to fixed contact pieces.
  • the insulating layer is positioned on a contact surface of the movable contact element and / or the first electrical contact body rule, which contacts the first electrical contact body rule with the movable contact element in the closed position.
  • the contact surfaces shortly before the formation of the contact contact arise high electric fields, so that an applied here insulation layer be particularly effective prevents or retards a breakdown.
  • the insulating layer preferably has a thickness of 10-100 ⁇ m, more preferably 10-50 ⁇ m, particularly preferably 10-30 ⁇ m. The thickness of the insulating layer is thus given before very thin.
  • Such thin insulating layers as used for example in the field of semiconductor structure can be applied by various processes, for example by spraying hen, dipping or printing on the movable contact element, the invention is not limited to these processes. For example, you can press the screen or stencil printing, jetting or inkjet printing. Through the thin insulation layer can continue to be formed good or secure electrical contacts to the first elec- cal contact body.
  • the insulating layer preferably comprises at least one of the following materials: thermoplastic, duroplastic,
  • Siloxane compound ceramic compound.
  • Suitable thermoplastics include, for example, polyimides, polyamides or polyetheretherketones (PEEK). Epoxy resin, poly (p-phenylene-2,6-benzobisoxazole) (PPBO), for example, comes into consideration as thermosetting plastic. Other inorganic or organic insulation materials in addition to siloxane compounds and ceramic compounds come into consideration.
  • the drive device is preferably a pyrotechnic drive device. With the help of pyrotechnics, it can be the accelerations particularly suitable for such applications he aims. Alternatively, other Antriebseinrich lines such as spring storage can be used.
  • the drive device is preferably designed to accelerate the movable contact element in the transfer of the separation position in the closed position to a predetermined minimum speed, in which the insulating layer tion in the preparation of Bermmunteres ask, in particular abraded, scraped or burned, so contacted the movable contact element in the closed position with the first contact body.
  • a good electrical contact between the first contact body and movable contact element made the who.
  • the drive means may be adapted to accelerate the movable contact element to a minimum speed of over 50 m / s, more preferably over 75 m / s, even more preferably over 100 m / s.
  • the first electrical contact body may preferably comprise a recess complementary in shape to the end region of the movable contact element, into which the movable contact element is retracted in the closed position with at least one part of the end region. This allows the formation of a stabi len contact between the contact element and the first electrical contact body.
  • the insulating layer is positioned at those locations of the movable contact element and / or the first electrical contact body, to which an electrical field strength above the dielectric strength in the movement between the disconnected position and at a movable contact element and a first electrical contact body without insulation layer the closed position is generated.
  • those areas or Be rich are shown on the contact element, at which increased above the dielectric strength lying electrical fields occur.
  • the invention comprises a converter, in particular multilevel converter, which comprises a short-circuiting device according to one of the above embodiments.
  • a converter in particular multilevel converter
  • such short-circuiting devices are required for converters.
  • the advantages of the inverter can be found in the above advantages of the short-circuiting device.
  • Figure 1 is a cross-sectional view of an inventive
  • Figure 2 is a cross-sectional view of a erfindungsspa
  • Short-circuiting device in the closed position according to a first embodiment
  • Figure 3 is a cross-sectional view of a erfindungsspa.
  • Short-circuiting device in disconnected position according to egg ner second embodiment
  • Figure 4 is a cross-sectional view of an inventive
  • Short-circuiting device in disconnected position according to egg ner third embodiment
  • Figure 5 is a cross-sectional view of an end portion of a
  • Figure 6 is a cross-sectional view of an end portion of a
  • Figure 7 is a cross-sectional view of an end portion of a
  • Figure 8 is a cross-sectional view of an end portion of a
  • FIG 1 and Figure 2 is a cross-sectional view of a short-circuiting device 1 according to a first Ausrete tion form shown in a disconnected position or a closed position.
  • the short-circuiting device 1 has a first electrical contact body 10 and a second electrical con tact body 20, which are spaced from each other spatially.
  • the short-circuiting device 1 furthermore has a movable contact element 30.
  • the movable Maisele element 30 is movable between a release position, which is shown in the figure 1 and a closed position, which is shown in the figure 2.
  • the two electricalmaschinekör by 10, 20 are formed from an electrically conductive mate rial.
  • the movable contact element 30, at least in the region between the contact bodies 10, 20, is also removablebil det of an electrically conductive material.
  • the movable contact element 30 is arranged in the disconnected position, see FIG. 1, at least partially on or in the second contact body 20.
  • an elec- trical connection between the movable contact element 30 and the second contact body 20 exist.
  • the movable contact element 30 has the same electrical potential as the second contact body 20.
  • the movement of the movable contact element 30 is generated by a drive device 40.
  • the movable contact element 30 of the second electrical contact body 20 in the direction of the first electrical contact body 10 from the disconnected position, see Figure 1, in the closed position, see Figure 2, moves.
  • the movable contact element 30 also has an insulation layer 50, see FIG. 1.
  • This insulation layer 50 is positioned on an end region 35 of the movable contact element 30 facing the first electrical contact body 10.
  • the end portion 35 is an area of the movable contact element 30, on which hen hen moving the movable contact element 30 to the first contact body 10 high electric fields entste.
  • the insulating layer 50 may advantageously prevent or at least delay or reduce the occurrence of an arc or breakdown. As a result, good electrical contact between the first electrical contact body 10 and the second contact body 20 can be produced by means of the movable contact element 30.
  • an insulating gas gap 90 between the movable contact element 30 and the first electrical contact body 10 in the disconnected position, see Figure 1, is provided.
  • the gas line 90 may example, be filled with air, the invention is not limited thereto.
  • a contact surface 37 is formed, on which the insulating layer 50 is positioned or applied.
  • this contact surface 37 lies flat on the first electrical contact body 10 and thus establishes a physical contact with the first electrical contact body 10.
  • the positioning of the insulating layer 50 on the contact surface 37 is advantageous, since high electric fields are generated just before contact on these surfaces, which result in an arc, respectively . By- can lead what prevents by the insulating layer 50 ver or at least reduced or delayed.
  • the insulating layer 50 may have a thickness D of 10-100 ym, more preferably 10-50 ym, particularly preferably 10-30 ym, wherein as materials for the insulating layer 50 preferably the following materials are suitable: Thermo plast, thermoset, siloxane , Ceramic compound. Combinations of these materials are encompassed by the invention, wherein the invention is not limited to these isolation mate rials and thicknesses D.
  • a drive means 40 a py rotechnische drive means. This generates when triggered by outflowing gases, a thrust force to move the movable contact element 30 in the direction of the first electrical contact body 10.
  • a thrust force to move the movable contact element 30 in the direction of the first electrical contact body 10.
  • a pyrotechnic to drive device is particularly suitable to achieve the REQUIRED chen speeds.
  • the drive device 40 is formed in this embodiment, at play to the movable contact element 30 in the transfer of the release position, see Figure 1, in the closed position, see Figure 2, to accelerate to a Restaurantstimm te minimum speed.
  • the insulating layer 50 is degraded during the production of Bermmromees.
  • the insulating layer 50 can be abraded, scraped or burnt, for example by friction, so that the movable contact element 30 contacts the first electrical contact body 10 directly in the closed position.
  • the insulating layer 50 in the closed position, see Figure 2, as described above used up that is no longer available.
  • the speeds generated by the drive device 40, with which the movable contact element 30 is moved in the direction of the first contact body 10, can accelerate to over 50 m / s, more preferably over 75 m / s, especially before given to more than 100 m / s , Especially atcruisingschwin speeds of about 100 m / s can be ensured that a sufficiently thin insulating layer 50 is degraded as described above.
  • the thickness D of the insulating layer 50 In the course of producing the thickness D of the insulating layer 50, it must thus be ensured that it can be consumed even at the speeds generated by the drive device 40, as described above, so that a good electrical contact can be formed.
  • the thickness D is therefore subject to optimization, since this must be sufficiently insulating, but also to be consumed during the movement.
  • the first electrical contact body 10 also has a recess 12 which is complementary in shape to the end region 35 of the movable contact element 30.
  • the movable contact element 30 In the closed position, see Figure 2, the movable contact element 30 is retracted with at least a portion of the end portion 35 in the recess 12.
  • the end portion 35 of the movable contact element 30 is cone-shaped as well as the recess complementary thereto. Corresponding insertion aids can be provided within the recess 12 in order to establish a secure contact.
  • the short-circuiting device 1 further comprises, in this embodiment, a coaxial arrangement with the contact bodies 10, 20, an insulating round tube 80, 85 which connects the electrical contact bodies 10, 20 to one another and thus stabilized velvet arrangement.
  • screw connections 70, 75 are provided by way of example in the insulating round tube 85.
  • the movable contact element 30 is suitably put together in this embodiment of different piston-shaped pieces, the invention is not limited thereto.
  • the movable contact element 30 may also be of uniform construction.
  • the drive means 40 is applied in this purely exemplary embodiment, a socket-like piston piece 32 to which the Antriebseinrich device 40 acts directly and when triggered for a
  • Thrust action of the entire movable contact element 30 in the direction of the first contact body 10 provides.
  • a support piece 33 is provided, to which a contact piece 34 connects.
  • the socket-like piston piece 32 is used to isolate the drive device to 40 against the movable contact element 30. In other embodiments, can be dispensed with such an insulation and thus on support piece 33 and piston piece 32.
  • the electrical contacts with the electrical contact bodies 10, 20 Herge provides.
  • the movable contact member 30 includes in a certain portion be an on the side surfaces below the end portion 35 an outward expansion 31, wel che in the closed position, see Figure 2, contacted with an inwardly directed portion of the second electrical contact body 20, so also a secure connection to the two-th electrical contact body 20 can be made.
  • Figure 3 is a cross-sectional view of a
  • Short-circuiting device 1 shown in the release position according to a two-th embodiment.
  • an insulating layer 50 ' is also disposed on a surface region 14 of the first electrical area facing the end region 35 of the movable contact element 30 Contact body 10 is positioned.
  • the insulating layer 50 may be omitted on the end portion 35 of the movable contact member 30 so that only one insulation layer 50 'is provided on the first electrical contact body 10.
  • the insulating layer 50 ' is positioned within the recess 12 in this embodiment.
  • the insulating layer 50 'on a con tact region 37' of the first electrical contact body 10 po sitioned.
  • This contact area 37 ' contacts the first electrical contact body 10 with the movable Mixele element 30 in the closed position, see Figure 2.
  • the Isolati ons Mrs 50' can also be alternatively positioned at those Stel len of the first electrical contact body 10, to which at a movable Contact element without insulation layer, an electric field strength above the dielectric strength in the movement between the separation position and the closed position is generated.
  • the insulating layer 50 ' is also made to the description content to Figure 1 and 2.
  • FIG. 4 shows a cross-sectional view of a fiction, contemporary short-circuiting device 1 is shown in the release position after egg ner third embodiment. Compared to Figure 1, the short-circuiting device 1 without insulated drive device 40 is shown. In this case, no piston piece 32 is provided purely by way of example in comparison to FIG.
  • Figures 5 to 8 show in cross-section different ne embodiments for positioning of insulation layers 50 on the movable contact element 30.
  • the insulating layer 50 may be positioned at those points of the movable contact element 30, on which a movable contact element without Isolati ons slaughter an electric field strength above the impact strength is generated in the movement between the disconnected position and the closed position. This does not necessarily coincide with the BeWe movement of the movable contact element from the disconnected position into the closed position with the contact surface 37. By detecting the electric fields in the movement of a contact element, these locations can be loka Linstrument and then provided with insulation layer 50 accordingly.
  • Figure 5 shows an example of a rectangular executed end portion 35 of the movable contact element 30, which is coated with an insulating layer 50.
  • the contact surface 37 can lie both in the side region and on the front surface of the movable contact element 30.
  • FIG. 6 shows by way of example a conically shaped end region 35 similar to FIG. 1 of the movable contact element 30, which is coated with an insulation layer 50.
  • the contact surface 37 can lie both in the side region and on the front surface of the movable contact element 30.
  • Figure 7 shows an example of a rounded shaped Endbe rich 35 of the movable contact element 30, which is coated with egg ner insulation layer 50.
  • the contact surface 37 can lie both in the side region and on the front surface of the movable contact element 30.
  • Figure 8 shows an example of a conically executed Endbe rich 35 of the movable contact element 30.
  • the insulating layer 50 is applied in comparison to the figures 5 to 7 only at the lateral contact surfaces 37.
  • the tip or front surface remains free in this exemplary embodiment.

Landscapes

  • Contacts (AREA)

Abstract

L'invention concerne un dispositif de court-circuit (1) qui comprend un premier corps de contact (10) électrique et un deuxième corps (20) électrique distant. Il comprend aussi un élément de contact (30) mobile entre une position de séparation et une position de fermeture, qui ne fournit aucune connexion conductrice d'électricité entre le premier et le deuxième corps de contact (10, 20) électrique dans la position de séparation et qui connecte de manière conductrice électriquement le premier et le deuxième corps de contact (10, 20) dans la position de fermeture. Il comprend en outre un dispositif d'entraînement (40), lequel, en cas d'activation, déplace l'élément de contact (30) mobile du deuxième corps de contact (20) électrique en direction du premier corps de contact (10) électrique de la position de séparation à la position de fermeture. L'élément de contact (30) mobile comprend une couche isolante (50), laquelle est positionnée sur une partie d'extrémité (35) de l'élément de contact (30) mobile faisant face au premier corps de contact (10) et/ou sur une zone de surface du premier corps de contact (10) électrique faisant face à la partie d'extrémité (35) de l'élément de contact (30) mobile.
EP17837864.2A 2017-12-11 2017-12-11 Dispositif de court-circuit Pending EP3698392A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/082147 WO2019114918A1 (fr) 2017-12-11 2017-12-11 Dispositif de court-circuit

Publications (1)

Publication Number Publication Date
EP3698392A1 true EP3698392A1 (fr) 2020-08-26

Family

ID=61132372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17837864.2A Pending EP3698392A1 (fr) 2017-12-11 2017-12-11 Dispositif de court-circuit

Country Status (2)

Country Link
EP (1) EP3698392A1 (fr)
WO (1) WO2019114918A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024103096A1 (fr) * 2022-11-15 2024-05-23 Miba Emobility Gmbh Dispositif de commutation d'urgence électrique

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4150266A (en) * 1977-01-27 1979-04-17 Networks Electronic Corp. Miniature pyrotechnic squib switch, single pole, normally open
DE19916329A1 (de) * 1999-04-12 2000-10-19 Moeller Gmbh Kurzschließer
DE102010010669A1 (de) 2010-03-04 2011-09-08 Siemens Aktiengesellschaft Schalter mit beidseitig fest verschienten Anschlussklemmen
CN102005336B (zh) * 2010-11-17 2013-01-30 武汉长海电气科技开发有限公司 爆炸式闭合开关
JP4993033B1 (ja) * 2010-12-27 2012-08-08 ダイキン工業株式会社 切断装置および通電遮断装置
WO2013185815A1 (fr) * 2012-06-13 2013-12-19 Abb Technology Ltd Ensemble commutateur de dérivation
DE102015203646A1 (de) * 2015-03-02 2016-09-08 Siemens Aktiengesellschaft Elektrische Kurzschließereinrichtung

Also Published As

Publication number Publication date
WO2019114918A1 (fr) 2019-06-20

Similar Documents

Publication Publication Date Title
DE2348895C2 (de) Verbindung für Starkstromkabel
DE19701752A1 (de) Zündkerze mit einer Magnetfeldeinrichtung zur Erzeugung eines Lichtbogens veränderlicher Länge
EP3735703B1 (fr) Dispositif de mise en court-circuit destiné à être utilisé dans des systèmes à basses et moyennes tensions pour la protection des biens et des personnes
EP0882317A1 (fr) Serre-cable pour batterie de vehicule
DE102017205833B4 (de) Schaltschütz-Einrichtung für ein Kraftfahrzeug, Bordnetz für ein Kraftfahrzeug und Verfahren zum Überführen einer Schaltschütz-Einrichtung von einem geschlossenen Zustand in einen geöffneten Zustand
DE102017100445B3 (de) Kapazitiver Kraftsensor mit verbesserter Befestigung
DE10341333B4 (de) Piezoaktor und Verfahren zum Herstellen eines Piezoaktors
DE3415625C2 (fr)
EP3698392A1 (fr) Dispositif de court-circuit
WO1997041582A1 (fr) Element de commutation pyrotechnique pour circuits electriques
AT521539B1 (de) Pyrotechnischer Schließer
DE102012210391B4 (de) Zündvorrichtung
DE2410625A1 (de) Hochspannungs-verbindungsvorrichtung
WO2017174733A1 (fr) Élément de connecteur électrique pour une section de commutation à haute tension et son utilisation
EP0274980B1 (fr) Dérivateur de surtensions à décharge dans un gaz, muni d'un trait d'allumage
DE102007063446B3 (de) Vakuumschaltröhre
DE102011113955A1 (de) Elektrischer Schalter
EP1383142A1 (fr) Dispositif éléctrique de connexion, en particulier limiteur de surtension
WO2024103096A1 (fr) Dispositif de commutation d'urgence électrique
DE2235184C3 (de) Erdungsstange
WO2022248253A1 (fr) Élément de batterie
WO2017140608A1 (fr) Système d'échangeur de chaleur
EP4089853A1 (fr) Système de contact pour deux rails conducteurs et connexion de rail conducteur pour deux rails conducteurs doubles
DE102021112325A1 (de) Batteriezelle
DE2364343C3 (de) Vorrichtung zum auftrennbaren Verbinden von hinter einer metallischen, geerdeten Trennwand liegenden, Mittelspannung führenden Leitern

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

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

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

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

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200519

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

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

Owner name: SIEMENS ENERGY GLOBAL GMBH & CO. KG

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20221206