EP2745303B1 - Sicherung - Google Patents

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Publication number
EP2745303B1
EP2745303B1 EP12755965.6A EP12755965A EP2745303B1 EP 2745303 B1 EP2745303 B1 EP 2745303B1 EP 12755965 A EP12755965 A EP 12755965A EP 2745303 B1 EP2745303 B1 EP 2745303B1
Authority
EP
European Patent Office
Prior art keywords
fuse
cap
housing
wire
connection
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.)
Active
Application number
EP12755965.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2745303A1 (de
Inventor
Joachim Wosgien
Ralf Lange
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.)
Phoenix Contact GmbH and Co KG
Original Assignee
Phoenix Contact GmbH and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=46800166&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2745303(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
Priority to SI201230778A priority Critical patent/SI2745303T1/sl
Publication of EP2745303A1 publication Critical patent/EP2745303A1/de
Application granted granted Critical
Publication of EP2745303B1 publication Critical patent/EP2745303B1/de
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05—Component parts thereof
    • H01H85/143—Electrical contacts; Fastening fusible members to such contacts
    • 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
    • H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/30—Means for indicating condition of fuse structurally associated with the fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/36—Means for applying mechanical tension to fusible member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05—Component parts thereof
    • H01H85/055—Fusible members
    • H01H85/12—Two or more separate fusible members in parallel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/30—Means for indicating condition of fuse structurally associated with the fuse
    • H01H85/303—Movable indicating elements

Definitions

  • cap backups are known with identifiers in different embodiments.
  • fuses are known, which are equipped with spring elements and / or lossy integrated resistance elements to improve the tripping behavior in the vicinity of the tripping current by self-heating.
  • these fuses do not provide a thermal fuse independent of the current.
  • DE19545505 discloses such a fuse circuit according to the preamble of claim 1.
  • the invention is based on the object to provide a fuse that circumvents one or more disadvantages of the known from the prior art solutions in an inventive manner.
  • the FIG. 1 shows a surge protection device 1 in which a fuse 3 according to the invention can find application.
  • the overvoltage protection device for example, a protective component 2.
  • the protective component 2 may be, for example, a varistor.
  • This protective component 2 has a first terminal 2a and a second terminal 2b on. Terminal 2b is electrically connected to the terminal 1a of the overvoltage protection device 1, while terminal 2b is electrically and thermally connected to the cap 3a of FIG Fuse 3 is connected.
  • Connection electrode 4 in turn is connected to the connection 1b of the overvoltage protection device 1 with a flexible electrical connection 5.
  • the fuse 3 has a housing 3f. This can be made of any suitable material, for example made of glass or ceramic, and have a suitable shape, for example a cylindrical shape.
  • the fuse has the already mentioned first cap 3a and a second cap 3b. At least cap 3a is partially electrically and thermally conductive. Furthermore, the fuse 3 has at least one fuse wire 3d, which runs between the first cap 3a and the second cap 3b within the housing 3f. In use, the first cap 3a is brought into thermal and electrical connection with the protective component 2. Further, the fuse wire 3d is held on the first cap 3a by means of a solder joint 3c, and the fuse wire 3d is further fixed to a terminal electrode 4 opposite to the first cap 3a. The terminal electrode 4 is held movably in a guide 8 in the cap 3b with respect to the body 3f of the fuse 3 and is opposite the body 3f of the fuse 3 under a mechanical bias 6.
  • the bias may be applied by, for example, one or more spring-like elements to be limited. For example, alternatively or additionally, a repulsive magnetic effect could provide the corresponding bias voltage 6.
  • the fusible wire 3d is designed to melt when exposed to a high I 2 t. Such an I 2 t occurs, for example, when a used as a protective component 2 varistorteurlegiert. Then a high current flows in a relatively short time. In order to prevent this flow of current, this massive current input should become one Melt melting of the fusible lead 3d in a relatively short time, eg within fractions of seconds. Typical currents that flow are in the range of 10 amperes, 100 amperes and more. One such case is in FIG. 4 shown. On the other hand, the fusible wire is also dimensioned so that any pulse current to be carried, for example in a transient event, can be easily carried and derived.
  • solder joint 3c is designed so that the solder joint 3c melts at an external heating by the protective component 2 above a specified temperature due to the thermal connection via the terminal 2a to the cap 3a.
  • Such thermal protection is rather sluggish compared to the melting of the wetting wire and ranges from seconds to minutes or more.
  • the core idea is that a slower thermal death of a protective component 2 also leads to the triggering of the fuse 3.
  • the fusible conductor 3d will not melt, but the solder joint 3c. This case is in FIG. 3 shown where the solder of the solder joint is softened and unlike FIG. 2 designated 3c '.
  • a typical solder that can be used for the solder joint 3c is a suitable low temperature solder, eg with a soldering temperature of 143 ° C or solder balls of Bi / Pb / Cd or the like.
  • a suitable low temperature solder eg with a soldering temperature of 143 ° C or solder balls of Bi / Pb / Cd or the like.
  • the fuse wire 3d itself as a solder joint 3c.
  • solder joint 3c softens or if the fuse wire 3d softens, the previously existing electrical contact is released from the cap 3a via the fuse wire 3d to the connection electrode 4 due to the mechanical bias 6.
  • the design referred to above makes it possible to combine two functions in one fuse, namely one thermal fuse and a short-circuit protection. Due to the fact that both are combined in one fuse, the design is small and can also be produced inexpensively.
  • the fuse wire 3d spent by the mechanical bias 6 of the solder joint 3c away in the housing 3f. This can be used to ensure that an emerging arc, which acts as a lightning bolt in Figures 3 and 4 is indicated, does not occur outside the fuse and so the fire safety is guaranteed.
  • the housing 3f has, at least in sections, a filling with an arc-quenching material, such as sand or POM.
  • the mechanical bias 6 is a spring force, wherein the spring (s) either in the housing - as in FIG. 5 shown - in particular between cap 3b and terminal electrode 4, or - as in the Figures 2 . 3 and 4 shown - is arranged on the outside of the housing / are.
  • An arrangement inside protects against contamination but has the disadvantage that the state of the spring can not be controlled without further measures.
  • a retaining wire 3e is guided parallel to the wetting wire 3d.
  • this holding wire 3e has a high-impedance construction and is intended to prevent the mechanical biasing 6 from causing the fuse wire 3d to release too early. Due to the high-impedance design with simultaneously higher strength than the fuse wire 3d, the current will flow substantially over the fuse wire 3d. If this current is too high in a short time (high I2t), the fuse wire 3d will melt and the holding wire 3e will now be traversed by the current. Due to the higher resistance he will melt almost immediately. Therefore, the fusible wire 3d will usually have a high Cu or Al content while, for example, the retaining wire 3e may be made of constantan.
  • the retaining wire 3e is in electrical and mechanical connection with the connection electrode 4, wherein the fuse wire 3d and the retaining wire 3e are connected to the opposite electrical connection cap 3a via the solder connection 3c.
  • the fuse 3 further comprises a display means to indicate the triggering of the fuse.
  • a display means to indicate the triggering of the fuse.
  • This may for example be a mechanical display which is moved with the movable connection electrode 4 and for example provides a color change from green to red and / or a switch, e.g. a micro-switch, provided which is actuated by the movable connection electrode 4 and closes or opens a corresponding circuit and / or triggers a remote warning.
  • the display means shows the triggering of the fuse 3 when melting the solder joint 3c as well as in a melting of the fuse element 3d similarly.
  • the component complexity is further reduced and a small size is made possible.
  • the movable connection electrode 4 is simultaneously the display means.
  • the movable connection electrode 4 has an extension inwardly into the housing 3f, wherein the housing 3f has a filling with an arc-extinguishing material at least in sections.
  • the aim of the invention is therefore in the surge protection device 1 in addition to the thermal fuse (separation device) to integrate an additional overcurrent protection adapted to the requirements and the short-circuit strength of the construction.
  • the goal is achieved by a summary of these two completely different requirements (the thermal separation and the Overcurrent separation) in one component.
  • the varistor 2 is in this case usually "alloyed", and has a reduced power loss and therefore generates less heat.
  • the fault current can nevertheless assume very high values, which can correspond to the short-circuit current of the voltage source. Therefore, such a fuse requires a breaking capacity up to the kA range.
  • the "dual function" in a fuse element reduces costs and parts, assembly costs, and is suitable for the application for the protection of surge protection components 1 to meet the safety and normative requirements.
  • the transient pulse strength of the selected fuse elements must be particularly high, or adapted to the surge current resistance. This usually represents a compromise between a required minimum strength (ie no tripping in the range of the specified surge current capability of the surge protective device) and a safe and rapid triggering for the short-circuit protection or a failure of one of the internal components.
  • Surge protection device 1 electrical connections 1a, 1b protection component 2 elec. Connections of the protection component 2a, 2b fuse 3 cap 3a, 3b solder 3c fuse wire 3d retaining wire 3e casing 3f Mobile connection electrode 4 Flexible electrical connection 5 preload 6 slings 7 guide 8th

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuses (AREA)
EP12755965.6A 2011-08-18 2012-08-17 Sicherung Active EP2745303B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201230778A SI2745303T1 (sl) 2011-08-18 2012-08-17 Varovalka

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011052805A DE102011052805B4 (de) 2011-08-18 2011-08-18 Sicherung
PCT/EP2012/066093 WO2013024153A1 (de) 2011-08-18 2012-08-17 Sicherung

Publications (2)

Publication Number Publication Date
EP2745303A1 EP2745303A1 (de) 2014-06-25
EP2745303B1 true EP2745303B1 (de) 2016-11-02

Family

ID=46800166

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12755965.6A Active EP2745303B1 (de) 2011-08-18 2012-08-17 Sicherung

Country Status (6)

Country Link
US (1) US9443689B2 (sl)
EP (1) EP2745303B1 (sl)
CN (1) CN103748651B (sl)
DE (1) DE102011052805B4 (sl)
SI (1) SI2745303T1 (sl)
WO (1) WO2013024153A1 (sl)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011052805B4 (de) * 2011-08-18 2013-07-18 Phoenix Contact Gmbh & Co. Kg Sicherung
DE102013214194B4 (de) * 2013-07-19 2016-05-04 Phoenix Contact Gmbh & Co. Kg Bauraumbegrenzte Überspannungsschutzvorrichtung und Verfahren zu dessen Herstellung
TW201628040A (zh) * 2015-01-16 2016-08-01 yi-xiang Wang 內建突波吸收及斷路結構之開關模組
TWI611451B (zh) * 2015-07-23 2018-01-11 Wang Yi Xiang 內建突波吸收及斷路結構之開關模組
FR3046873B1 (fr) * 2016-01-19 2019-06-21 Renault S.A.S Procede et dispositif de protection d'une architecture electrique
CN105680436A (zh) * 2016-01-28 2016-06-15 佛山市浦斯电子有限公司 具有含工频过流保护熔体的独立腔体的电涌保护装置
WO2017139912A1 (en) * 2016-02-15 2017-08-24 Dongguan Littelfuse Electronics, Co., Ltd. Thermal metal oxide varistor circuit protection device
US10292255B2 (en) 2016-05-18 2019-05-14 Raytheon Company Expanding thermal device and system for effecting heat transfer within electronics assemblies
CN106229215B (zh) * 2016-08-03 2019-04-12 湖北三江航天红林探控有限公司 一种热致动接电开关
US10806026B2 (en) 2018-07-12 2020-10-13 International Business Machines Corporation Modified PCB vias to prevent burn events
JP6914375B2 (ja) * 2019-02-28 2021-08-04 東芝三菱電機産業システム株式会社 保護継電装置、及び電力変換システム
CZ2021268A3 (cs) * 2021-06-01 2022-07-13 Saltek S.R.O. Zařízení pro ochranu proti nadproudu, zejména pro ochranu svodičů přepětí

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Publication number Priority date Publication date Assignee Title
US1501018A (en) * 1919-07-08 1924-07-08 Gen Electric Electric-circuit protective device
US1866491A (en) * 1929-08-29 1932-07-05 Schmid Francis Charles Self-indicating refillable electric cartridge fuse
US2296627A (en) * 1937-10-30 1942-09-22 Gen Electric Time lag fuse
US2313281A (en) * 1938-06-09 1943-03-09 Chase Shawmut Co Thermal circuit interrupter
US2358676A (en) * 1939-09-07 1944-09-19 Chase Shawmut Co Fusible electric circuit protector
US2913555A (en) * 1957-08-08 1959-11-17 Mc Graw Edison Co Protectors for electric circuits
US3179774A (en) * 1961-08-21 1965-04-20 Chase Shawmut Co Indicating and actuating fuses
US3450949A (en) * 1967-02-24 1969-06-17 Kelek Co Fuse failure detector
US3342964A (en) * 1967-03-24 1967-09-19 Chase Shawmut Co Dual element cartridge fuse for small current intensities
US3889222A (en) * 1973-11-07 1975-06-10 Tokyo Shibaura Electric Co Surge voltage absorber
DE7719678U1 (de) * 1977-06-23 1979-01-04 Dehn + Soehne Gmbh + Co Kg, 8500 Nuernberg Ueberspannungsableiter
JP2820703B2 (ja) * 1989-01-25 1998-11-05 株式会社オリエント 温度電流感知器
DE19545505C1 (de) * 1995-12-06 1997-05-28 Dehn & Soehne Überspannungsableiter
JP3017950B2 (ja) * 1996-09-09 2000-03-13 東洋システム株式会社 電流・温度複合ヒューズ
DE19917425A1 (de) * 1999-04-19 2000-10-26 Driescher Spezialfab Fritz Sicherung, insbesondere Hochleistungssicherung
US6211770B1 (en) * 1999-04-27 2001-04-03 Mcg Electronics, Inc. Metal oxide varistor module
US6538551B2 (en) * 2001-08-22 2003-03-25 Cooper Technologies Company Heat concentrating barrel for wire heater in dual element fuses
DE102005014601A1 (de) * 2005-03-31 2006-10-05 Conti Temic Microelectronic Gmbh Elektronische Baugruppe
US7724122B2 (en) * 2006-11-22 2010-05-25 Thomas & Betts International, Inc. Fuse providing circuit isolation and visual interruption indication
CN101261893B (zh) * 2008-04-14 2011-07-20 佛山市浦斯电子有限公司 热保护压敏电阻器模块
DE102009022069B4 (de) 2009-01-12 2016-10-20 Dehn + Söhne Gmbh + Co. Kg Überspannungsableiter
DE102009053145A1 (de) * 2009-11-05 2011-05-12 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzelement
DE102010038070B4 (de) * 2010-08-06 2012-10-11 Phoenix Contact Gmbh & Co. Kg Thermische Überlastschutzvorrichtung
DE102011052805B4 (de) * 2011-08-18 2013-07-18 Phoenix Contact Gmbh & Co. Kg Sicherung

Also Published As

Publication number Publication date
EP2745303A1 (de) 2014-06-25
US20140218159A1 (en) 2014-08-07
DE102011052805B4 (de) 2013-07-18
SI2745303T1 (sl) 2017-01-31
US9443689B2 (en) 2016-09-13
CN103748651B (zh) 2017-03-01
WO2013024153A1 (de) 2013-02-21
CN103748651A (zh) 2014-04-23
DE102011052805A1 (de) 2013-02-21

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