EP1026720A1 - Dispositif limiteur de courant avec métal liquide à auto-régénération - Google Patents

Dispositif limiteur de courant avec métal liquide à auto-régénération Download PDF

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Publication number
EP1026720A1
EP1026720A1 EP00101319A EP00101319A EP1026720A1 EP 1026720 A1 EP1026720 A1 EP 1026720A1 EP 00101319 A EP00101319 A EP 00101319A EP 00101319 A EP00101319 A EP 00101319A EP 1026720 A1 EP1026720 A1 EP 1026720A1
Authority
EP
European Patent Office
Prior art keywords
current limiting
limiting device
liquid metal
liquid
self
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
EP00101319A
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German (de)
English (en)
Other versions
EP1026720B1 (fr
Inventor
Wolfgang Kremers
Frank Berger
Andreas Krätzschmar
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.)
Eaton Industries GmbH
Original Assignee
Moeller GmbH
Kloeckner Moeller 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 Moeller GmbH, Kloeckner Moeller GmbH filed Critical Moeller GmbH
Publication of EP1026720A1 publication Critical patent/EP1026720A1/fr
Application granted granted Critical
Publication of EP1026720B1 publication Critical patent/EP1026720B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H87/00—Protective devices in which a current flowing through a liquid or solid is interrupted by the evaporation of the liquid or by the melting and evaporation of the solid when the current becomes excessive, the circuit continuity being reestablished on cooling

Definitions

  • the invention relates to a self-recovering current limiting device Liquid metal according to the preamble of claim 1 or claim 7.
  • Such a current limiting device is known from the publication SU 922 911 A.
  • known that contains electrodes made of solid metal, which by as a pressure-resistant Insulated housing formed first insulating body are separated.
  • Isoliergeophuses Within the Isoliergeophuses are arranged by insulating partitions and in between second insulating body, which is designed as an annular sealing washer are compressor rooms that are partially filled with liquid metal and are located one behind the other trained, which are filled with liquid metal, eccentrically arranged connecting channels of the partition walls connected are. This means that there is a continuous flow of liquid metal in normal operation internal conductive connection between the electrodes. In the event of a current limitation due to the high current density, the liquid metal from the connecting channels repressed.
  • the invention is therefore based on the object, the current limiting behavior a current limiting device, in particular with regard to its Current limiting factor and their response time.
  • the proposed means are compared to the known current limiting devices only under the influence of a short-circuit current the arc ignition and thus the beginning of the current limitation both temporally as well as depending on the level of the short-circuit current brought forward.
  • the porous material of the partition walls is absorbed due to the capillary action with the non-conductive liquid, which thus is available directly on the walls of the connecting channels.
  • the area of each connection channel becomes an external short-circuit current heated up very strongly by the electricity frames, and evaporation occurs the non-conductive liquid that enters the area through the pores is. Steam bubbles form in the connecting channel, which lead to Conduct cross section. This process is developing avalanche-like, since the narrowed cross-section leads to even greater warming leads until finally the liquid metal itself evaporates and an electrical one Arc is ignited.
  • the boiling point of the non-conductive Liquid well above the heating temperature in rated operation are also significantly below the boiling point of the liquid metal.
  • the non-conductive liquid must not mix with the liquid metal or chemically bond.
  • the non-conductive Liquid and porous material should be noted that the capillary action on the non-conductive liquid much larger than the capillary action is the liquid metal.
  • Non-conductive liquid that is the liquid metal additional adverse chemical and physical changes, especially before oxidation; protects.
  • the non-conductive is advantageous Liquid is an oil, especially an organic oil with a boiling temperature from 250 to 350 ° C.
  • the protective gas advantageously consists of Nitrogen or from a noble gas or noble gas mixture or from a mixture from nitrogen and at least one noble gas.
  • the partitions can advantageously be made of an open-pore foam ceramic or make from porous, porous mica.
  • GaInSn alloys are easy to handle due to their physiological Harmlessness.
  • An alloy of 660 parts by weight gallium, 205 parts by weight of indium and 135 parts by weight of tin are included Normal pressure from 10 ° C to 2000 ° C liquid and has sufficient electrical Conductivity.
  • the current limiting device 10 contains on both sides an electrode 1 made of solid metal, preferably copper, which is rotationally symmetrical is formed and merges into an outer lead 2. Between the electrodes 1 are a plurality of compression spaces 4 through a corresponding number of annular sealing disks 11 and insulating ones Partitions 12 are formed. Through a molded housing 5 the electrodes 1, the sealing washers 11 and the partition walls 12 held, known means for sealing the compressor chambers 4 and for the non-positive connection of the elements mounted in the molded housing 5 1, 11 and 12 provided, but not shown for reasons of clarity are.
  • the means for sealing can, for example, sealing rings between the sealing washers 11 and the partition walls 12 or electrodes 1 his.
  • the means for non-positive connection are, for example, continuous Tensioning screws along the two lines 3.
  • the two outer compressor rooms 4 are laterally by one of the electrodes 1 and limited by an intermediate wall 12.
  • the inner compressor rooms 4 are laterally limited by two partitions 12. That in general multi-part molded housing 5 and the sealing washers 11 are pressure-resistant first and second insulating bodies. All compressor rooms 4 are partly with filled with a liquid metal 7, for example a GaInSn alloy.
  • the Partitions 12 are below the liquid level 9 with connecting channels 8 provided.
  • the connecting channels 8 are also made of liquid metal 7 filled so that a continuous between the electrodes 1 there is an electrically conductive connection.
  • the connecting channels 8 adjacent Partitions 12 can advantageously each by a certain angular amount be offset to a continuous in the current limiting case To prevent arcing.
  • the liquid metal 7 thick layer of a non-conductive liquid 6, which deals with the liquid metal 7 can neither mix nor chemically combine, for example an organic oil with a boiling temperature of around 300 ° C.
  • Above the Liquid 6 is in the compressor rooms 4 vacuum.
  • the partitions 12 consist of an open-pore, porous material, for example made of foam ceramic. Due to the capillary action of the pores on the non-conductive Liquid 6 is partially absorbed by the partition walls 12, so that it also reaches the immediate area of the connecting channels 8.
  • the current limiting device 20 differs from that described above in that above the liquid level 9th an inert protective gas 16, for example argon.
  • the shielding gas 16 is over the pores of the partition walls 12 to the immediate area of the Connection channels 8 arrives.
  • the resulting one expands Heat the protective gas 16 close to the connecting channels 8, whereby as a result of the part of the protective gas entering the connecting channels 8 16 an increasing narrowing of the current paths in a very short time and further heating of the liquid metal 7 in the connecting channels 8 takes place, which ultimately leads to the rapid ignition of a current limiting Arc leads.

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  • Contacts (AREA)
EP20000101319 1999-02-01 2000-01-22 Dispositif limiteur de courant avec métal liquide à auto-régénération Expired - Lifetime EP1026720B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999103940 DE19903940C1 (de) 1999-02-01 1999-02-01 Selbsterholende Strombegrenzungseinrichtung mit Flüssigmetall
DE19903940 1999-02-01

Publications (2)

Publication Number Publication Date
EP1026720A1 true EP1026720A1 (fr) 2000-08-09
EP1026720B1 EP1026720B1 (fr) 2006-07-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000101319 Expired - Lifetime EP1026720B1 (fr) 1999-02-01 2000-01-22 Dispositif limiteur de courant avec métal liquide à auto-régénération

Country Status (2)

Country Link
EP (1) EP1026720B1 (fr)
DE (2) DE19903940C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005050044A1 (de) * 2005-10-19 2007-05-03 Moeller Gmbh Vorrichtung zur Strombegrenzung
CN112864545A (zh) * 2021-03-17 2021-05-28 昆山宝创新能源科技有限公司 一种热自适应性模块、电池模组及电池包

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10226062A1 (de) 2002-06-12 2004-01-08 Ab Elektronik Gmbh Weitwinkel-Drehwinkelsensor
CN109637874B (zh) * 2018-11-21 2020-01-17 云南靖创液态金属热控技术研发有限公司 液态金属限流器

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE383037C (de) * 1922-03-21 1923-10-09 Michael Von Hirschberg Elektrische Dauersicherung mit Quecksilberfuellung
DE842811C (de) * 1946-02-19 1952-06-30 Fkg Ag Elektrische Schaltvorrichtung zur beliebigen Beeinflussung elektrischer Stromkreise
DE1024595B (de) * 1952-08-19 1958-02-20 Fkg Ag Lichtbogenfester Isolierkoerper
US3474339A (en) * 1966-10-11 1969-10-21 Centre Nat Rech Scient Electric switches for high currents
FR2025319A5 (fr) * 1969-10-27 1970-09-04 Mitsubishi Electric Corp
DE2652506A1 (de) * 1976-11-18 1978-05-24 Gec Elliott Automation Ltd Elektrische hochstromvorrichtungen
SU922911A1 (ru) * 1980-05-05 1982-04-23 Kb Polt Inst Kujbysheva Токоограничитель 1
DE4012385A1 (de) * 1989-04-26 1991-03-28 Karl Marx Stadt Tech Hochschul Stromgesteuerte abschaltvorrichtung

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE383037C (de) * 1922-03-21 1923-10-09 Michael Von Hirschberg Elektrische Dauersicherung mit Quecksilberfuellung
DE842811C (de) * 1946-02-19 1952-06-30 Fkg Ag Elektrische Schaltvorrichtung zur beliebigen Beeinflussung elektrischer Stromkreise
DE1024595B (de) * 1952-08-19 1958-02-20 Fkg Ag Lichtbogenfester Isolierkoerper
US3474339A (en) * 1966-10-11 1969-10-21 Centre Nat Rech Scient Electric switches for high currents
FR2025319A5 (fr) * 1969-10-27 1970-09-04 Mitsubishi Electric Corp
DE2652506A1 (de) * 1976-11-18 1978-05-24 Gec Elliott Automation Ltd Elektrische hochstromvorrichtungen
SU922911A1 (ru) * 1980-05-05 1982-04-23 Kb Polt Inst Kujbysheva Токоограничитель 1
DE4012385A1 (de) * 1989-04-26 1991-03-28 Karl Marx Stadt Tech Hochschul Stromgesteuerte abschaltvorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section EI Week 198309, Derwent World Patents Index; Class X13, AN 1983-D0960K, XP002133570 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005050044A1 (de) * 2005-10-19 2007-05-03 Moeller Gmbh Vorrichtung zur Strombegrenzung
CN112864545A (zh) * 2021-03-17 2021-05-28 昆山宝创新能源科技有限公司 一种热自适应性模块、电池模组及电池包

Also Published As

Publication number Publication date
EP1026720B1 (fr) 2006-07-05
DE19903940C1 (de) 2000-11-02
DE50013098D1 (de) 2006-08-17

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