EP1597745B1 - Wickelschmelzleiter mit isolierendem zwischenwickel für ein sicherungsbauelement - Google Patents

Wickelschmelzleiter mit isolierendem zwischenwickel für ein sicherungsbauelement Download PDF

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Publication number
EP1597745B1
EP1597745B1 EP04764513A EP04764513A EP1597745B1 EP 1597745 B1 EP1597745 B1 EP 1597745B1 EP 04764513 A EP04764513 A EP 04764513A EP 04764513 A EP04764513 A EP 04764513A EP 1597745 B1 EP1597745 B1 EP 1597745B1
Authority
EP
European Patent Office
Prior art keywords
fusible
wire
conductor
core
diameter
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.)
Not-in-force
Application number
EP04764513A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1597745A1 (de
Inventor
Frank Schmidt
Manfred Rupalla
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.)
Wickmann Werke GmbH
Original Assignee
Wickmann Werke 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 Wickmann Werke GmbH filed Critical Wickmann Werke GmbH
Publication of EP1597745A1 publication Critical patent/EP1597745A1/de
Application granted granted Critical
Publication of EP1597745B1 publication Critical patent/EP1597745B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • H01H85/18—Casing fillings, e.g. powder
    • H01H85/185—Insulating members for supporting fusible elements inside a casing, e.g. for helically wound fusible elements

Definitions

  • the invention relates to a fuse element for a fuse component having a fuse wire wound around an electrically insulating core.
  • melt conductors for carrier-type fuses are presently commonly used as a wrap-around conductor, as shown in US Pat. No. 5,736,919.
  • a fusible conductor for example made of silver or an alloy thereof, is wound onto a nonconductive carrier core (for example a glass fiber). The closer the wire is wound, i. the more turns per unit length are wound, the higher the electrical resistance of the fusible conductor per unit length, but the higher the heat load per unit length.
  • the object of the invention is to provide an improved winding fusible conductor in which the mentioned disadvantages are avoided.
  • the fuse element according to the invention has a fuse wire wound around an electrically insulating core. At least one electrically insulating fiber is wound on the core parallel to the fusible wire such that the fusible wire is fixed so as to prevent a short circuit of adjacent turns. Depending on the manner of parallel winding the fusible wire and the at least one electrically insulating fiber, the fusible wire is more or less prevented from moving in the longitudinal direction of the core. Shorting adjacent wraps of the fuse wire is prevented by the intervening at least one insulating fiber.
  • the fuse wire and an insulating fiber are wound close together.
  • both the fuse wire and the insulating fiber have an approximately circular cross section and the ratio of the diameter of the fuse wire to that of the insulating fiber is between 1/3 and 3.
  • the ratio of the diameter of the fuse wire to that of the insulating fiber between 1 and 3, ie the diameter of the fuse wire is at least as great as that of the insulating fiber. This initially results in the advantage that the outer surfaces of the molten metal protrude beyond the electrically insulating fiber, so that a secure contact even without soldering is possible.
  • a higher ratio of the diameter of the fuse wire to that of the insulating fiber allows a larger winding density.
  • the value 3 represents approximately one upper limit, which still ensures a safe isolation of adjacent turns.
  • the insulating fiber deforms upon winding onto the core, for example is flattened. Then, the fiber is to be selected so as to maintain a distance between the melt wire turns, which is preferably between 0.2 times to 2 times the diameter of the fuse wire.
  • the core on which the fuse wire and the insulating fiber are wound in parallel has a circular cross-section, and the cross-sectional dimensions of the insulating fiber (e.g., its circular cross-sectional diameter) are less than the diameter of the core.
  • the ratio of the diameter of the core to that of the insulating fiber is preferably between 3 and 8, for example at 5.
  • the fusible wire As materials for the fusible wire, conventional materials such as silver, silver-copper alloys, alloys of silver, copper, tin and other metals are used.
  • the material of the insulating fiber glass, ceramic and temperature-resistant plastics are conceivable. Same materials can be used for the core.
  • the material of the insulating fiber is flexible, that of the core can also be a solid.
  • the insulating fiber is one or more parallel glass fibers or one or more ceramic fibers.
  • the core preferably also consists of one or more glass fibers.
  • FIG. 1 schematically shows a fusible conductor according to the invention, in which both a fusible wire 2 and an insulating fiber 3 are wound in parallel around an electrically insulating core 1.
  • fusible wire 2 and insulating fiber 3 are wound tightly against each other.
  • the insulating fiber of previously approximately circular cross-section has deformed during winding into a flattened band whose width is about twice as large as the diameter of the molten metal 2.
  • Fig. 2 shows schematically a section of another embodiment of a wound with fusible wire and insulating fiber surface of the insulating core 1 in a sectional view.
  • the fused wire and the insulating fiber after winding have an approximately circular cross-section, wherein the diameter of the fuse wire is about twice as large as that of the insulating fiber.
  • the turns are wrapped tightly together.
  • the adjacent wraps of the fuse wire are labeled 2A and 2B, and the adjacent turns of the insulating fiber are labeled 3A and 3B.
  • the distance between the adjacent windings of the molten metal wire is approximately equal to 0.4 times the diameter.
  • Such a high winding density can not be achieved with the conventional method.
  • the diameter of the insulating fiber were 1/3 of the diameter of the fuse wire, then there would be computationally a distance between the wraps of the fuse wire of about 0.16 times the diameter of the fuse wire.
  • the fuse wire and the insulating fiber In the choice of dimensions and cross-sectional profiles (circular or other cross-section) of the fuse wire and the insulating fiber, particular care is taken to ensure that the enamel wire has good contact with its outer surface it is possible that only a small amount of heat is released into the insulating material wound in parallel and that the simplest possible production is ensured.
  • the inventively achievable high winding densities are fuse components with improved properties, in particular smaller rated current and higher pulse strength, for example, a rated current of 1.6 A and a pulse strength up to 1 kA, reachable.
  • the fusible conductor according to the invention facilitates the production of the fuse, since a displacement of the windings is avoided in the further processing.
EP04764513A 2004-02-21 2004-08-26 Wickelschmelzleiter mit isolierendem zwischenwickel für ein sicherungsbauelement Not-in-force EP1597745B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202004002758 2004-02-21
DE202004002758U 2004-02-21
PCT/EP2004/009537 WO2005081278A1 (de) 2004-02-21 2004-08-26 Wickelschmelzleiter mit isolierendem zwischenwickel für ein sicherungsbauelement

Publications (2)

Publication Number Publication Date
EP1597745A1 EP1597745A1 (de) 2005-11-23
EP1597745B1 true EP1597745B1 (de) 2006-09-27

Family

ID=34877787

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04764513A Not-in-force EP1597745B1 (de) 2004-02-21 2004-08-26 Wickelschmelzleiter mit isolierendem zwischenwickel für ein sicherungsbauelement

Country Status (6)

Country Link
US (1) US20070236323A1 (ja)
EP (1) EP1597745B1 (ja)
JP (1) JP4361095B2 (ja)
CN (1) CN100492580C (ja)
DE (1) DE502004001605D1 (ja)
WO (1) WO2005081278A1 (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090108980A1 (en) * 2007-10-09 2009-04-30 Littelfuse, Inc. Fuse providing overcurrent and thermal protection
US9117615B2 (en) 2010-05-17 2015-08-25 Littlefuse, Inc. Double wound fusible element and associated fuse
US8629750B2 (en) * 2010-09-20 2014-01-14 Cooper Technologies Company Fractional amp fuse and bridge element assembly therefor
US11393651B2 (en) * 2018-05-23 2022-07-19 Eaton Intelligent Power Limited Fuse with stone sand matrix reinforcement
CN108767343B (zh) * 2018-07-11 2023-11-21 华霆（合肥）动力技术有限公司 电池检测组件、电池模组及制造方法

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Also Published As

Publication number Publication date
EP1597745A1 (de) 2005-11-23
DE502004001605D1 (de) 2006-11-09
CN1868021A (zh) 2006-11-22
JP2007523454A (ja) 2007-08-16
WO2005081278A1 (de) 2005-09-01
JP4361095B2 (ja) 2009-11-11
CN100492580C (zh) 2009-05-27
US20070236323A1 (en) 2007-10-11

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