EP3888112A1 - Contact électrique à fermeture - Google Patents

Contact électrique à fermeture

Info

Publication number
EP3888112A1
EP3888112A1 EP19828753.4A EP19828753A EP3888112A1 EP 3888112 A1 EP3888112 A1 EP 3888112A1 EP 19828753 A EP19828753 A EP 19828753A EP 3888112 A1 EP3888112 A1 EP 3888112A1
Authority
EP
European Patent Office
Prior art keywords
connecting element
contact elements
electrically conductive
conductive material
contact
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
EP19828753.4A
Other languages
German (de)
English (en)
Other versions
EP3888112B1 (fr
Inventor
Fabian Stellberg
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.)
Auto Kabel Management GmbH
Original Assignee
Auto Kabel Management GmbH
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 Auto Kabel Management GmbH filed Critical Auto Kabel Management GmbH
Publication of EP3888112A1 publication Critical patent/EP3888112A1/fr
Application granted granted Critical
Publication of EP3888112B1 publication Critical patent/EP3888112B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/04—Co-operating contacts of different material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H2001/508—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position with mechanical means to prevent return/reverse movement of movable contact once opening or closing cycle has started
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/24—Power arrangements internal to the switch for operating the driving mechanism using pneumatic or hydraulic actuator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/28—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • 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

Definitions

  • the subject relates to an electrical closer, in particular for a
  • Motor vehicle line in particular a motor vehicle power line, for example a battery line, for example a battery motor, battery starter, battery generator or starter generator line.
  • a motor vehicle power line for example a battery line, for example a battery motor, battery starter, battery generator or starter generator line.
  • a possible safety concept provides for a short circuit of the live parts with the help of an electrical closer. Due to the short circuit caused by the make contact, the on-board electrical system is disconnected from the voltage after the short circuit. At the same time, a short circuit has the advantage that no switching under load is necessary, in which there is always the risk of an arc and thus a further flowing current. In addition, a closer can be designed in such a way that a downshift is impossible, so that a permanent fuse is guaranteed.
  • the object of the object was to provide an electrical closer for safety-relevant systems, which closes safely and in which a downshift is difficult.
  • an electrical closer To connect the electrical closer to a circuit, for example to a motor vehicle line or a motor vehicle power line, it has at least a first and a second electrical connection.
  • the respective electrical connection can be used as a connection lug, connection bolt,
  • Screw connection, crimp connection be formed as a round cable or as a flat cable.
  • the electrical closer can be housed in an independent housing and the connections can be led out of the housing.
  • the electrical closer has a first contact element, which is electrically connected to the first connection, and a second
  • the contact element which is electrically connected to the second connection. In the open position, the electrical contact elements are isolated from one another and spatially separated. The contact elements are preferably arranged within the housing of the electrical closer.
  • the connecting element In order to bring the connecting element into contact with the contact elements, a relative movement, in particular a translatory movement, of at least one of the contact elements to the connecting element is effected.
  • the connecting element In the open position, the connecting element is spatially separated from at least one of the contact elements and there is no electrical connection either between the two contact elements with one another or between at least one of the
  • Connecting element moves relative to at least one of the contact elements.
  • Connection element forms a short circuit between the two
  • An electrically conductive material which encloses the connecting element, offers good protection against resetting while at the same time being lightweight.
  • a material can be a porous material. This can be in the form of a powder or a porous foam. The material can also be pasty or liquid. The material is preferably metallic. The material is electrically conductive.
  • the connecting element and / or the contact elements are formed at least in part from an electrically conductive material. At least one of the contact elements can penetrate into the material of the connecting element, as a result of which a short circuit is formed in the closed position.
  • the connecting element can also penetrate into the electrically conductive material of the contact elements, as a result of which a short circuit is formed in the closed position.
  • a liquid metal can e.g. B. be mercury. According to one embodiment, it is proposed that the relative movement between at least one of the contact elements and the
  • Connecting element at least one, preferably both contact elements immerse in the electrically conductive material of the connecting element or the
  • a connection is made between an penetrating element and an element that is penetrated.
  • An penetrating element can be at least one of the contact elements and the element that is penetrated in this case is the connecting element.
  • An penetrating element can be the connecting element and the element into which penetration is in this case at least one of the contact elements.
  • the element that is penetrated can be formed at least in part from the electrically conductive material.
  • the penetrating element be formed with an undercut and / or hook-shaped and / or with a barb which is expanded against the direction of penetration.
  • the penetrating element can be one of the contact elements which penetrates into the connecting element or the connecting element which penetrates into at least one of the contact elements.
  • one or both contact elements can be made of the electrically conductive material
  • Connecting element or the connecting element be encircled by the electrically conductive material at least one of the contact elements. It is in particular an end region of the penetrating element is preferably completely enclosed by the electrically conductive material. There is a mechanical and electrical connection between the penetrated element and the electrically conductive material. Both contact elements preferably penetrate into the electrically conductive material of the connecting element. However, in the open position there is already an electrical connection between one of the
  • Penetrate contact elements in the electrically conductive material Penetrate contact elements in the electrically conductive material.
  • Connecting element is encircled by the respective electrically conductive material at least one of the contact elements. It is proposed in particular that a respective end region of the connecting element is completely enclosed by the respective electrically conductive material.
  • Enclosed all around can be understood to mean that the penetrating element is completely surrounded by the electrically conductive material along a circumference and touches it all around.
  • An end region can be an end face and a lateral surface of the penetrating element pointing away from the end face.
  • Penetration depth can be between a few mm to a few cm. The greater the depth of penetration into the electrically conductive material, the greater the contact area and thus the electrical conductivity or the conductance between the
  • the electrically conductive material be a porous metal, in particular an open-pore or closed-pore metal foam, in particular made of an aluminum material or a
  • the porous metal has a medium one
  • Pore diameter between 0.2mm and 0.4mm. The smaller the pore diameter, the denser the porous metal and the larger the contact area between the porous material and the element penetrating into it and the element into which it is penetrated.
  • the contact element penetrates into the connecting element or vice versa.
  • the penetrating element has a mandrel-shaped geometry, for example conical. It is proposed that the tips of the contact elements are directed in the direction of the connecting element or the tips of the ends of the connecting element are directed in the direction of the respective contact element.
  • the respective tips are preferably spike-shaped.
  • the penetrating element can also be formed in the form of a cutting edge.
  • the tips are driven into the porous metal, which creates an electrical and mechanical contact.
  • the porosity of the metal allows penetration, at the same time realizing a large holding force.
  • the contact elements are formed in one piece with the connections. So it is immediately the
  • the connecting element is formed as a conductor bridge and that by the relative movement
  • Dipping element immersed in the electrically conductive material of the contact elements. It should be noted here that it may also be sufficient if only one Dips end of a connecting element into a contact element and the other end of the connecting element already in with the other contact element
  • the electrically conductive material be completely enclosed by a housing.
  • an insulating material is arranged on the surface of the electrically conductive material, into which at least one of the contact elements or
  • the housing is preferably formed from an insulation material, so that unintentional contacts are avoided.
  • the electrically conductive material, the connecting element and / or the contact elements according to the
  • the drive is electrical, electromechanical, magnetic, pyrotechnic or the like.
  • An electromechanical drive can in particular be a spring drive, which can be triggered electrically.
  • a magnetic drive can in particular be a relay drive.
  • a pyrotechnic drive can be realized with the help of a pyrotechnic squib, which is an electrical one
  • a porous metal can be produced in different ways, in particular foaming of a blowing agent being used to produce the porous metal. Sintering a metal powder can also lead to the porous material.
  • the blowing agent is introduced into a metal powder and the metal-blowing agent mixture is treated, in particular heated, whereby the blowing agent outgasses and
  • Fig. La a closer in an open position according to a first
  • Fig. La shows a closer 2 with a first connection 4a and a second connection 4b.
  • the connections 4a, b can be formed as flat parts or round parts.
  • the connections 4a, b can be formed in particular as connection lugs, connection bolts, crimp connections, solder connections, weld connections or the like.
  • the connections 4a, b can be bimetallic or made of a metal.
  • the connections 4a, b can be formed from a copper material or an aluminum material.
  • the contact elements 6a, 6b can be provided in one piece with the contacts 4a, b or only electrically contacted therewith.
  • the contact elements 6a, b can be made of the same metal or one of the connections 4a, b
  • the contact elements 6a, 6b can be coated with metal.
  • the contact elements 6a, b can be made from one
  • Copper material or an aluminum material can be formed.
  • the contact elements 6a, b can be shaped in the shape of a spike on the end face and in
  • a connecting element 8 can have a housing 8a and a metal foam 8b arranged in the housing 8a.
  • the metal foam 8b is described below as representative of a porous metal, the following description is therefore also applicable to any other porous metal.
  • the housing 8a is formed from an insulation material, in particular plastic, and preferably completely encases the metal foam 8b.
  • a contact 10 in the form of a squib may be provided for the contact elements 6a, b on the side of the connecting element 8 facing away from the connecting element 8.
  • An electrical pulse can trigger the drive 10 via ignition wires 12, whereupon a gas pressure
  • Connection element accelerated in the direction of the contact elements 6a, b.
  • the connecting element 8 is movably arranged in a channel 14 and can be moved in the channel 14 in particular in B e wegungsri direction 16.
  • the movement of the connecting element 8 in the channel 14 in the direction of movement 16 is triggered by the drive 10.
  • an ignition pulse is transmitted via the ignition wire 12 and the drive 10 ignites. This moves because of the gas pressure
  • the connecting element 8 is sufficiently large "so that the contact elements 6a, b, the housing 8a pierce and penetrate into the metal foam 8b. A mechanical and electrical connection is created between the front ends of the contact elements 6a, b and the metal foam 8b. A short circuit is formed between the contact elements 6a, b via the metal foam 8b and the normally open contact 2 in a closed position.
  • the connecting element 8 remains in this closed position. Since the tips of the contact elements 6a, b are mechanically completely removed from the metal foam 8b
  • the connecting element 8 holds firmly on the contact elements 6a, b and a reset is prevented.
  • Barbs or undercuts can also be arranged at the tips of the contact elements 6a, b, which prevent the connecting element 8 from moving in the opposite direction 16.
  • FIG. 2a shows a further exemplary embodiment, in which a contact element 6a is pivotally mounted about an axis 6c about the connecting element 4b.
  • the drive 10 ' is formed by a spring, which for example
  • the drive 10 ' is triggered via an ignition pulse and that
  • the contact elements 6a, 6b can also be accelerated in a direction of movement 16 in the direction of the connecting element 8, as shown in FIGS. 3a, b.
  • the contact elements 6a, b are with the
  • Connection elements 4a, b connected so that the contact elements 6a, b are movable in the direction of movement 16.
  • a pin 18 can be provided between the drive 10 and the contact elements 6a, b, which ensures a uniform acceleration of the contact elements 6a, b.
  • 3b shows the closed position in which a short circuit is formed between the contact elements 6a, b via the metal foam 8b.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Air Bags (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Fuses (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

L'invention concerne un contact électrique à fermeture comprenant un premier raccordement électrique (4a) et un deuxième raccordement électrique (4b), un premier élément de contact (6a), lequel est relié électriquement au premier raccordement, un deuxième élément de contact (6b), lequel est relié électriquement au deuxième raccordement, un élément de liaison (8), au moyen duquel une liaison électrique peut être établie entre les deux éléments de contact, et un entraînement (10), qui provoque un mouvement relatif entre les éléments de contact et l'élément de liaison, l'élément de liaison (8) ou les éléments de contact (6a, 6b) étant formés au moins en partie d'un métal poreux électro-conducteur.
EP19828753.4A 2019-01-18 2019-12-20 Contact électrique à fermeture Active EP3888112B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019101307.0A DE102019101307B3 (de) 2019-01-18 2019-01-18 Elektrischer Schließer
PCT/EP2019/086581 WO2020148072A1 (fr) 2019-01-18 2019-12-20 Contact électrique à fermeture

Publications (2)

Publication Number Publication Date
EP3888112A1 true EP3888112A1 (fr) 2021-10-06
EP3888112B1 EP3888112B1 (fr) 2022-08-31

Family

ID=69056056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19828753.4A Active EP3888112B1 (fr) 2019-01-18 2019-12-20 Contact électrique à fermeture

Country Status (7)

Country Link
US (1) US20220044883A1 (fr)
EP (1) EP3888112B1 (fr)
CN (1) CN113366598A (fr)
DE (1) DE102019101307B3 (fr)
ES (1) ES2927364T3 (fr)
MX (1) MX2021008630A (fr)
WO (1) WO2020148072A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021120055A1 (de) * 2021-08-02 2021-09-30 Peter Lell Elektrisches verbindungsschaltglied mit eindringkörper
WO2023199953A1 (fr) * 2022-04-15 2023-10-19 株式会社ExH Dispositif de connexion
AT525886B1 (de) * 2022-07-05 2023-09-15 Miba Sinter Austria Gmbh Sicherheitsschalter
WO2024103096A1 (fr) 2022-11-15 2024-05-23 Miba Emobility Gmbh Dispositif de commutation d'urgence électrique

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH280309A (de) 1950-05-02 1952-01-15 Sigg Hans Elektrischer Schwachstromkontakt mit flüssigem Kontaktmetall.
CH389729A (de) * 1962-01-12 1965-03-31 Richtr Josef Flüssigkeits-Kurzschliesser für Hoch- und Höchstspannungen
DE1238993B (de) * 1965-12-23 1967-04-20 Calor Emag Elektrizitaets Ag Kurzschlussstromschutz fuer Hochspannungsanlagen
US4150266A (en) 1977-01-27 1979-04-17 Networks Electronic Corp. Miniature pyrotechnic squib switch, single pole, normally open
DE19746566A1 (de) * 1997-10-22 1999-04-29 Kloeckner Moeller Gmbh Kurzschließer, insbesondere für eine Störlichtbogen-Schutzvorrichtung zur Verwendung in Anlagen zur Verteilung elektrischer Energie
DE102005048003B4 (de) * 2005-08-04 2008-04-30 Dehn + Söhne Gmbh + Co. Kg Kurzschließeinrichtung für den Einsatz in Nieder- und Mittelspannungsanlagen zum Sach- und Personenschutz
DE102017106117B3 (de) * 2017-03-22 2018-07-12 Auto-Kabel Management Gmbh Elektrischer Schließer sowie KFZ mit einem elektrischen Schließer
DE102018100076B3 (de) * 2018-01-03 2019-06-13 Dehn + Söhne Gmbh + Co. Kg Kurzschließeinrichtung für den Einsatz in Nieder- und Mittelspannungsanlagen zum Sach- und Personenschutz

Also Published As

Publication number Publication date
EP3888112B1 (fr) 2022-08-31
CN113366598A (zh) 2021-09-07
ES2927364T3 (es) 2022-11-04
US20220044883A1 (en) 2022-02-10
WO2020148072A1 (fr) 2020-07-23
MX2021008630A (es) 2021-08-19
DE102019101307B3 (de) 2020-06-18

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