EP0973184A1 - Elément fusible électrique avec bande fusible entre des connecteurs - Google Patents

Elément fusible électrique avec bande fusible entre des connecteurs Download PDF

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Publication number
EP0973184A1
EP0973184A1 EP99111706A EP99111706A EP0973184A1 EP 0973184 A1 EP0973184 A1 EP 0973184A1 EP 99111706 A EP99111706 A EP 99111706A EP 99111706 A EP99111706 A EP 99111706A EP 0973184 A1 EP0973184 A1 EP 0973184A1
Authority
EP
European Patent Office
Prior art keywords
heating element
receiving piece
fusible
strip
heating
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.)
Withdrawn
Application number
EP99111706A
Other languages
German (de)
English (en)
Inventor
Andre Borchers
Uwe Hill
Jürgen SCHEELE
Henning Schulte
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.)
Wilhelm Pudenz GmbH
Original Assignee
Wilhelm Pudenz 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 Wilhelm Pudenz GmbH filed Critical Wilhelm Pudenz GmbH
Publication of EP0973184A1 publication Critical patent/EP0973184A1/fr
Withdrawn legal-status Critical Current

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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
    • H01H85/46—Circuit arrangements not adapted to a particular application of the protective device
    • 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
    • H01H85/46—Circuit arrangements not adapted to a particular application of the protective device
    • H01H2085/466—Circuit arrangements not adapted to a particular application of the protective device with remote controlled forced fusing
    • 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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/10—Adaptation for built-in fuses
    • H01H9/106—Adaptation for built-in fuses fuse and switch being connected in parallel

Definitions

  • the invention relates to an electrical fuse element with at least one fuse strip, which is mechanically and electrically connected at both ends to connectors, these parts being made of an electrically conductive material.
  • Such securing elements are known and serve different purposes.
  • To the Example one thinks increasingly in the automotive industry about the crash behavior of Vehicles following with the aim of vehicle occupants more or less facing the direct consequences to protect an accident.
  • the cause of such a fire can For example, a pinched cable that is still in use when Rescue scissors can be squeezed off and lead to sparking. Therefore one is endeavors to remove essential parts of an electrical system from the energy source (the battery) cut off.
  • the object of the invention is therefore an electrical fuse element of the beginning to create the type mentioned, which compared to previous shutdown or safety systems is cheaper, lighter and has a more variable function.
  • At least one Melting strip at least one with its one outer end with the connector and with its other, opposite end connected to a receiving piece Has fuse element, wherein the receptacle with at least one heating element controlled heating of the receptacle is connected.
  • the first connector to the second opposite Connector that that on the first connector of the melting strips, be it in Form one or in the form of two fusible conductors, the fusible conductor that Connects receptacle and the second connector is connected to the latter.
  • the electrical current flows from the first connector to the Fusible conductor (forming the fusible strip), further over the receptacle and from this in the opposite connector.
  • the heating element is controlled in a controlled manner. This means that of a not described and not shown Evaluation electronics of known type of heating current is sent into the heating element, after a signal has caused the evaluation electronics to emit the heating current.
  • the new fuse element according to the invention is a fuse with secondary Heat source. If you connect the new fuse element between the positive pole one Energy source, for example a vehicle battery, and a supply line then immediately become apparent the further advantage that the contact resistance to the existing system does not elevated. The resistance of the new element goes to zero.
  • the new security element has an independent fuse element and works autonomously, i.e. it switches in Short-circuit trap automatically with high overload current. This independent function remains also exist if the heating element is not switched on or not heated.
  • the new securing element has a high degree of variability. It can be characterized by its modular character adjust to different applications. In an extreme special case could by replacing the melting strip (you take a different sheet) Securing element from an application area with few consumers to one easily converted with many consumers.
  • the use of the heating element attached to the receptacle is advantageous the response of the new security element accelerated considerably. Have attempts shown that compared to normal switch-off times for fuses of around 500 Seconds according to the invention when using the heating element the switch-off time to 50 seconds can be reduced.
  • the self-sufficient safety element can by Newly used heating according to the invention in the area of the receptacle externally can be controlled.
  • the emergency operation described in connection with the known pyrocutter can be used for perform the new securing element well. In the event of a trigger, only this becomes physical Component itself destroyed, not the entire assembly. Instead of the new securing element can provide a standard backup for emergency operation due to the good accessibility be used.
  • the material cross section through which the electrical current in the fuse element flows according to the invention is smaller in the area of the respective fusible conductor than am Connector and also smaller than on the receptacle.
  • the heating element will Receiving piece brought to a higher temperature, and you have lower in the areas Cross-section measured a large temperature gradient and then the desired there Melting of the fuse element found.
  • the new fuse element is inexpensive for uninterruptible power supplies use, for example in computer systems and also in motor vehicles. Especially at Long lines connected to a battery used to have the problem that a short-circuit current was not generated sufficiently high to a conventional one Get fuses to switch; nevertheless, enough electricity flowed around for example, to set a line on fire. This is suitable for solving these problems new fuse element according to the invention excellent. Even with smaller currents Power lines are now activated, for example in the event of a crash All electronics from the battery are turned off when an error signal warms up of the heating element, because then the new fuse element can be used earlier trigger. Individuals can now use it for new protection concepts in the automotive industry Paths of the entire supply system are monitored and if an error occurs on them Way be turned off.
  • the melting strip has at least two fusible conductors, each with its outer end connected to a connecting piece, whose inner end is connected to the receiving piece and the heating element.
  • the two fusible conductors can be symmetrical on both sides of the Receiving piece be attached so that the heating from the inside, by the heating element over the receptacle to the fuse element located on each of the two sides he follows.
  • This symmetrical structure gives you an even better temperature distribution, and you have a better use of the heating energy than that of the heating element
  • the heat introduced only affects the fuse element.
  • could without any special Measures in the general first case with only one fuse element Heat from the receptacle on the side facing away from the fuse element in the Connection piece flow with the possible consequence that the switch-off temperature only a little later is achieved.
  • this disadvantage can be avoided if you have a thermal break arranges between the receptacle and the connector, so that by the Heating element generated heat can not escape unhindered to the connector.
  • Each fuse element acts as a thermal brake. So that's a thermal Resistance meant a kind of heat barrier.
  • the breaking current can thus be halved of the melt flow can be reduced without a heating element. It is expedient according to the invention even if only one melting strip has a receptacle with a heating element. So if when two melting strips are connected in parallel, for example half the current take over, only one of the two melting strips is connected to the heating element, is sufficient with advantage half the heating output for switching activation. You get one Gain factor. The melt flow is reduced to half.
  • At least one fuse element also has a constriction
  • the Character of the thermal barrier or thermal barrier by increasing the thermal Resistance increased due to this bottleneck.
  • the effect of the Heating element increases and the response of the fuse element according to the invention be accelerated.
  • thermal brake could also be used in one or both of the connectors integrate. You could do that, for example, by making a hole or one Effect recess. In effect, you get through these bottlenecks or heat brakes Reduction of the cross section through which the current has to flow. Depending on the application you can optimize the conditions so that enough current through the Securing element flows, but at the narrow point, however, the heat flow in the desired Extent is braked.
  • the fuse element can in an alternative embodiment also be provided with a diffusion agent, for example in the form of a solder bump.
  • the invention is characterized in that the heating element by friction welding and / or gluing and / or soldering and / or crimping and / or pressure joining and / or Rivets is attached to the receptacle.
  • the heating element by friction welding and / or gluing and / or soldering and / or crimping and / or pressure joining and / or Rivets is attached to the receptacle.
  • Another cheap embodiment is characterized in that the Receiving piece is bent into a U-shape to form a clamping spring such that the heating element is clamped between the legs of the clamping spring of the receiving piece.
  • the Melting strips with attached receptacle can simply be pulled through Make punching out of a selected sheet. If you then choose the die so that the receptacle is longer than a measure of the heating element, then you can use the heating element by folding the receptacle practically "wrap" it in this.
  • the recording piece can be bent in a U-shape so that the two legs of the U press against each other. A heating element can be easily clamped in such a spring in this way and hold on.
  • the heating element is plate-shaped and has a layer structure with a base layer made of ceramic, with an electrical heatable heat conductor layer made of platinum and a cover layer made of ceramic.
  • a platinum plate can be placed, from which by means of laser beams Areas are burned out so that a kind of platinum heating coil is created. It it goes without saying that one end of this helix with the feed wire and the other with the Leakage wire for electrical current is connected.
  • This heating current is from a Evaluation electronics supplied, which evaluates a signal and the delivery of the heating current concerned.
  • the evaluated signal can be derived from any physical quantity. It can come from the heating element itself, for example.
  • the securing element heats up the receiving piece and therefore the heating element.
  • the result is an accelerated one Switch off the fuse element.
  • the heating element in the fuse according to the invention can also be used as an information provider to by electricity and / or Temperature information to tell the user - with the help of the heating element - which one Current flows between the connectors.
  • the securing element can be a Tripping current need that can be greater than a fault current.
  • a conventional one Fuse would then occur if only the error signal or only a small overcurrent do not trigger. Due to the error signal, the evaluation electronics are used to trigger the Heating current causes, but is advantageous according to the invention for the use of the additional function ensured that the system is unlocked.
  • the outer functional parts of an electrical fuse element are the connectors 1a, 1b, which are shown in plan view in Figures 1, 5 and 6. In between is in the embodiment of Figure 1, a single melting strip 2, while in the Embodiments according to FIGS. 5 and 6 each have two melting strips 2a and 2b in between.
  • the length of each melting strip, 2, 2a, 2b is equal to the distance of the straight edges 3 of the two connectors 1a, 1b from each other.
  • the fusible strip 2 has two fusible conductors 4a, 4b on. In between is a receiving piece 5, which according to the cross-sectional view 2 is bent into a U-shape.
  • the lower leg of the U is 6 and the upper leg is 7 designated. Both legs 6, 7 form a through the correspondingly sharply curved web 8 Clamping spring.
  • this clamping spring 6-8 From the open side of this clamping spring 6-8, a heating element 9 is inserted and between the legs 6 and 7 of the receptacle 5 clamped. About additional used Glue or solder material to further reduce the heat resistance is not shown. At the connection points 10a and 10b there are interfaces via connecting lines 11a and 11b are provided. Those shown in between in Figures 1, 5 and 6 Interfaces 12a and 12b are connected to the heating conductor layer denoted by 13. If you use the heating element 9 as a temperature sensor on the one hand and you measure between the Interfaces 11a and 11b, on the other hand, the voltage drop during operation when current from the one connector 1a flows to the other connector 1b, then allows recycling both signals to determine the current flowing through the melting strip 2.
  • the interfaces 12a and 12b cannot with one shown evaluation electronics are connected, which after receiving a signal Heating current through the lines denoted by 14 in Figures 3 and 4.
  • the Layer structure of the heating element 9 can be seen from FIG. 3, namely the lower one Base layer 15 made of ceramic, the overlying heat conductor layer 13 made of platinum and the applied cover layer 16 made of ceramic, which for fixing the lines 14 to the the respective platinum conductor.
  • This heating element 9 has a plate shape, which is why it is good on a flat surface Attach receptacle 5 and there in the embodiment shown here by Clamp spring 6 - 8 can be clamped.
  • the melting strips form with the connecting pieces a flat metal structure. But you can also imagine non-flat parts that are electrically connected to each other. Instead of metals, such as copper sheets or silver sheets, you can also doped for individual components of the fuse element Introduce semiconductor elements or other electrically conductive materials.
  • FIG. 5 there is another parallel to the melting strip 2a (above) Melting strips 2b (below) are arranged and each with the connecting pieces 1a and 1b connected. Only the lower melting strip 2b has the receiving piece 5 between two Fusible conductors, like the upper fusible conductors with 4a (left) and 4b (right) of the Recording piece 5 are designated. All fusible conductors 4a, 4b can be straight or curved bars with continuous, straight edges. In the embodiments shown here but semicircular recesses are made in the edges, through which there is a constriction 17 in each case.
  • the arrangement of the melt strips 2a and 2b is that same as in the embodiment of FIG. 5.
  • the lower melting strip 2b has but not even a receptacle 5 with heating element 9. Rather, the middle ones Areas of the two melting strips 2a and 2b by an additional, transverse to the Melting strip connecting piece 18 connected.
  • This connector 18 has in this embodiment the receiving piece 5 with the heating element 9.
  • the Function is corresponding, with the respective fusible conductor in the region of its constriction 17 melts first.

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  • Fuses (AREA)
EP99111706A 1998-07-17 1999-06-17 Elément fusible électrique avec bande fusible entre des connecteurs Withdrawn EP0973184A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19832234 1998-07-17
DE1998132234 DE19832234A1 (de) 1998-07-17 1998-07-17 Elektrisches Sicherungselement mit zwischen Anschlußstücken angeordnetem Schmelzstreifen

Publications (1)

Publication Number Publication Date
EP0973184A1 true EP0973184A1 (fr) 2000-01-19

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ID=7874443

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99111706A Withdrawn EP0973184A1 (fr) 1998-07-17 1999-06-17 Elément fusible électrique avec bande fusible entre des connecteurs

Country Status (2)

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EP (1) EP0973184A1 (fr)
DE (1) DE19832234A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1654793A2 (fr) * 2003-08-08 2006-05-10 Delphi Technologies Inc. Dispositif d'interruption de circuit
WO2018206273A1 (fr) * 2017-05-08 2018-11-15 Leoni Bordnetz-Systeme Gmbh Disjoncteur pyrotechnique et réseau d'alimentation équipé d'un disjoncteur pyrotechnique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013019468B4 (de) 2013-11-19 2022-07-07 Audi Ag Batterie mit einer Mehrzahl von Batteriezellen
DE102015217190A1 (de) * 2015-09-09 2017-03-09 Bayerische Motoren Werke Aktiengesellschaft Kombinierte Sicherung für ein elektrisches Bordnetz eines elektrisch angetriebenen Fahrzeugs

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE910085C (de) * 1939-11-02 1954-04-29 Siemens Ag Sicherung, insbesondere fuer hohe Leistungen
US2763752A (en) * 1953-10-12 1956-09-18 Siemens Ag Electric fuse for retarded or rapid operation
US4124835A (en) * 1976-03-26 1978-11-07 Cahill Jr William J Remotely controlled utility service interrupter system and apparatus
US4677412A (en) * 1982-07-28 1987-06-30 Dan Sibalis Energy supplemented electrical fuse
DE19735546A1 (de) * 1997-08-16 1999-02-18 Daimler Benz Ag Sicherungselement für elektrische Anlagen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE910085C (de) * 1939-11-02 1954-04-29 Siemens Ag Sicherung, insbesondere fuer hohe Leistungen
US2763752A (en) * 1953-10-12 1956-09-18 Siemens Ag Electric fuse for retarded or rapid operation
US4124835A (en) * 1976-03-26 1978-11-07 Cahill Jr William J Remotely controlled utility service interrupter system and apparatus
US4677412A (en) * 1982-07-28 1987-06-30 Dan Sibalis Energy supplemented electrical fuse
DE19735546A1 (de) * 1997-08-16 1999-02-18 Daimler Benz Ag Sicherungselement für elektrische Anlagen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1654793A2 (fr) * 2003-08-08 2006-05-10 Delphi Technologies Inc. Dispositif d'interruption de circuit
EP1654793A4 (fr) * 2003-08-08 2009-03-04 Delphi Tech Inc Dispositif d'interruption de circuit
US7875997B2 (en) 2003-08-08 2011-01-25 Delphi Technologies, Inc. Circuit interruption device
WO2018206273A1 (fr) * 2017-05-08 2018-11-15 Leoni Bordnetz-Systeme Gmbh Disjoncteur pyrotechnique et réseau d'alimentation équipé d'un disjoncteur pyrotechnique

Also Published As

Publication number Publication date
DE19832234A1 (de) 2000-01-20

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