DE19527997A1 - Safety fuse system for motor vehicles - has current compared with threshold value to control thyristor stage to operate fuse - Google Patents

Safety fuse system for motor vehicles - has current compared with threshold value to control thyristor stage to operate fuse

Info

Publication number
DE19527997A1
DE19527997A1 DE1995127997 DE19527997A DE19527997A1 DE 19527997 A1 DE19527997 A1 DE 19527997A1 DE 1995127997 DE1995127997 DE 1995127997 DE 19527997 A DE19527997 A DE 19527997A DE 19527997 A1 DE19527997 A1 DE 19527997A1
Authority
DE
Germany
Prior art keywords
fuse
current
thyristor
safety device
circuit
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
DE1995127997
Other languages
German (de)
Other versions
DE19527997C2 (en
Inventor
Robert Albiez
Alfred Krappel
Maximilian Groebmair
Detlef Dr Rer Nat Kerkmann
Joerg Dipl Ing Delwig
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.)
Bayerische Motoren Werke AG
Leopold Kostal GmbH and Co KG
Original Assignee
Bayerische Motoren Werke AG
Leopold Kostal 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
Application filed by Bayerische Motoren Werke AG, Leopold Kostal GmbH and Co KG filed Critical Bayerische Motoren Werke AG
Priority to DE1995127997 priority Critical patent/DE19527997C2/en
Publication of DE19527997A1 publication Critical patent/DE19527997A1/en
Application granted granted Critical
Publication of DE19527997C2 publication Critical patent/DE19527997C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
    • H02H3/023—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order by short-circuiting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • 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

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

The safety fuse system for use in a road vehicle system is located within a housing [11] and consists of current sensor [7] coupled to a threshold level detector [8] with an output coupled to an amplifier [9] that is used to fire a thyristor stage [10]. The thyristor is connected between the power line and ground. When the actual current drawn exceeds the set value the threshold device responds and a thermal fuse [5] fails to isolate the equipment USE/ADVANTAGE : Safety fuse system for automotive use. Fast and reliable response.

Description

Die Erfindung bezieht sich auf eine Sicherungsvorrichtung gemäß dem Oberbegriff von Patentanspruch 1.The invention relates to a safety device according to the preamble of claim 1.

Schmelzsicherungen dienen zur sicheren Unterbrechung des Stromkreises im Störfall. Hierbei lösen sie nach der vom Hersteller angegebenen I-t-Kennlinie aus. Das Auslöseverhalten ist dabei sehr stark vom Nennstrom der verwendeten Siche­ rung abhängig.Fuses are used to safely interrupt the circuit in the Accident. They are triggered according to the I-t characteristic curve specified by the manufacturer. The tripping behavior is very much dependent on the nominal current of the safety device used dependent.

Während für kleine bis mittlere Nennströme (0,05 A . . . 30 A) Schmelzsicherungen mit unterschiedlichem Ansprechverhalten (FF, F, M, T, TT) zur Verfügung stehen, sind diese für höhere Nennströme über 30 A, speziell im Kfz-Bereich, nicht verfüg­ bar. Die in Fahrzeugen zum Einsatz kommenden Schmelzsicherungen mit hohen Nennströmen zeigen im allgemeinen ein träges Verhalten. Es wurde festgestellt, daß bei einer Schmelzsicherung für einen hohen Nennstrom die Unterbrechung des Stromkreises bei einer Stromstärke, die 50% über dem Nennstrom liegt, erst nach einigen sec. erfolgt. Die negativen Auswirkungen für das Bordnetz sind ohne weiteres erkennbar. Da der Auslösevorgang ein thermischer Vorgang ist, hängt die Wirksamkeit der Schmelzsicherung auch von den Umgebungsverhältnissen, spe­ ziell von der Umgebungstemperatur ab. While for small to medium rated currents (0.05 A ... 30 A) fuses with different response behavior (FF, F, M, T, TT) are available, they are not available for higher nominal currents above 30 A, especially in the automotive sector bar. The fuses used in vehicles with high Nominal currents generally show sluggish behavior. It was determined, that the interruption in a fuse for a high rated current of the circuit at a current that is 50% above the nominal current after a few seconds. The negative effects for the electrical system are without further recognizable. Since the triggering process is a thermal process, it depends Effectiveness of the fuse also from the ambient conditions, spe depending on the ambient temperature.  

Der Erfindung liegt die Aufgabe zugrunde, eine Sicherungsvorrichtung der ein­ gangs genannten Art zu schaffen, bei der im Bedarfsfall eine schnelle und zuver­ lässige Unterbrechung des Stromkreises erfolgt.The invention has for its object a safety device to create the type mentioned above, in which if necessary a quick and reliable casual interruption of the circuit occurs.

Die Erfindung löst diese Aufgabe durch die kennzeichnenden Merkmale des Pa­ tentanspruchs 1.The invention solves this problem by the characterizing features of Pa claim 1.

Durch den Kurzschluß-Thyristor kommt es im Bedarfsfall zu einem deutlich über den Nennstrom liegenden Stromfluß durch die Schmelzsicherung. Der Thyristor bleibt, einmal angesteuert, durchgeschaltet, bis der Stromfluß durch die Schmelz­ sicherung unterbrochen wird.The short-circuit thyristor results in a significantly higher level if necessary current flow through the fuse. The thyristor remains, once activated, switched through until the current flows through the melt fuse is interrupted.

In den weiteren Patentansprüchen sind vorteilhafte Ausgestaltungen der Erfindung beschrieben. Sie zeichnen sich aus für den Patentanspruch
2 durch einen einfachen Schaltungsaufbau,
3 durch eine weitere schaltungstechnische Vereinfachung,
4 eine isolationssichere und kompakte Anordnung und
5 durch eine besondere Servicefreundlichkeit.Advantageous embodiments of the invention are described in the further patent claims. They stand out for the claim
2 through a simple circuit structure,
3 by a further simplification of the circuitry,
4 an insulation-proof and compact arrangement and
5 through a special service friendliness.

Anhand der Zeichnung ist die Erfindung weiter erläutert. Es zeigtThe invention is further explained on the basis of the drawing. It shows

Fig. 1 ein Ersatzschaltbild der erfindungsgemäßen Sicherungsvorrichtung Fig. 1 is an equivalent circuit diagram of the safety device according to the invention

Fig. 2 ein Diagramm zur Erläuterung der Wirkungsweise und Fig. 2 is a diagram for explaining the operation and

Fig. 3 eine konstruktive Realisierung der Sicherungsvorrichtung von Fig. 1. Fig. 3 is a constructive realization of the security device of Fig. 1,.

Fig. 1 zeigt den Einsatz der erfindungsgemäßen Sicherungsvorrichtung in einem Kraftfahrzeug. Dabei ist eine Batterie 1, eine mit dem Pluspol verbundene Batterie- Leitung 2 sowie schematisch ein Motorkabelbaum 3 dargestellt, der von der Lei­ tung 2 ausgehend über Neben- und Unterleitungen zu nicht dargestellten elektri­ schen Verbrauchern führt und die auch durch eine schematische Schalteinrichtung 4 gemeinsam oder individuell zu- bzw. abschaltbar sind. In der Leitung 2 befindet sich eine Schmelzsicherung 5 als Teil einer Sicherungsvorrichtung 6, die einen Stromstärke-Sensor 7 mit nachgeschaltetem Schwellwertschalter 8, einen Verstär­ ker 9 sowie einen Thyristor 10 enthält. Dieser ist zwischen der Leitung 2 und der Fahrzeugmasse geschaltet. Die Sicherungsvorrichtung 6 ist in einem Gehäuse 11 angeordnet, in dem auch ein Abschnitt 12 der Leitung 2 verläuft. Die Leitung 2 ist mit dem Abschnitt 12 über Steckkontakte 13 und 13′ verbunden. Ferner gehen Versorgungsleitungen (nicht dargestellt) für den Schwellwertschalter 8 und den Verstärker 9 von dem Abschnitt 12 ab. Auf einen Referenzeingang 14 des Kompa­ rators 8 ist ein Widerstand 15 geschaltet, dessen Wert als Referenz für den Auslö­ sewert der Sicherungsvorrichtung 6 dient. Fig. 1 shows the use of the securing device according to the invention in a motor vehicle. Here, a battery 1 , a battery lead 2 connected to the positive pole and a motor wiring harness 3 is shown schematically, which leads from the line 2 via secondary and sub-lines to electrical consumers (not shown) and which are also common through a schematic switching device 4 or can be switched on or off individually. In the line 2 there is a fuse 5 as part of a fuse device 6 , which contains a current sensor 7 with a downstream threshold switch 8 , an amplifier 9 and a thyristor 10 . This is connected between line 2 and the vehicle ground. The securing device 6 is arranged in a housing 11 in which a section 12 of the line 2 also runs. The line 2 is connected to the section 12 via plug contacts 13 and 13 '. Furthermore, supply lines (not shown) for the threshold switch 8 and the amplifier 9 depart from the section 12 . On a reference input 14 of the comparator 8 , a resistor 15 is connected, the value of which serves as a reference for the trigger value of the safety device 6 .

Wird dieser Auslösewert überschritten, d. h. wird bei einer Schmelzsicherung 5 von z. B. 40 A mit dem Sensor 7 eine Stromstärke in der Leitung 2 von mindestens 40 A gemessen, so zündet der Komparator 8 über den Verstärker 9 den Thyristor 10. Über die Schmelzsicherung 5 und den Thyristor 10 fließt nunmehr ein Kurzschluß­ strom, der wesentlich größer als 40 A ist. Die Schmelzsicherung 5 wird in kürzester Zeit zerstört und unterbricht die Leitung 2 bleibend.If this trigger value is exceeded, ie if a fuse 5 of z. B. 40 A measured with the sensor 7, a current in the line 2 of at least 40 A, the comparator 8 ignites the amplifier 9 through the thyristor 10th About the fuse 5 and the thyristor 10 now flows a short-circuit current, which is much larger than 40 A. The fuse 5 is destroyed in a very short time and interrupts the line 2 permanently.

Anhand von Fig. 2 ist dies näher erläutert. Es sei wiederum eine Sicherung 5 mit dem Nennwert von 40 A betrachtet. Bestimmt durch die angeschlossenen, nicht dargestellten Verbraucher stellt sich zunächst bei ordnungsgemäßer Funktion ein Stromwert von 30 A ein. Zum Zeitpunkt t₀, symbolisiert durch einen Pfeil wird der Thyristor 10 gezündet. Es stellt sich ein Kurzschlußstrom von 140 A ein, der inner­ halb kürzester Zeit, hier etwa 30 ms zur Zerstörung der Schmelzsicherung führt und die Stromstärke in der Leitung 2 auf den Wert 0 reduziert. Dieser Wert wird beibehalten.This is explained in more detail with reference to FIG. 2. Again, a fuse 5 with a nominal value of 40 A is considered. Determined by the connected loads (not shown), a current value of 30 A is initially set if the function is correct. At time t₀, symbolized by an arrow, the thyristor 10 is ignited. A short-circuit current of 140 A is established, which leads to destruction of the fuse within a very short time, here approximately 30 ms, and reduces the current in line 2 to the value 0. This value is retained.

Bei der in Fig. 3 dargestellten konstruktiven Ausgestaltung der Erfindung sind in einem Gehäuse 12′ zwei erfindungsgemäße Sicherungsvorrichtungen für insge­ samt zwei parallele Leitungen angeordnet. Die mit KL15 und KL30 (svw. Zünd- und Dauerplus-Leitung) bezeichneten Leitungen sind über einen Stecker 16 mit dem Gehäuse 12′ für ein sog. Sicherungsmodul verbunden. Die beiden Leitungen lau­ fen parallel zueinander und sind jeweils mit einer Schmelzsicherung abgesichert. Am Ausgang dieses Gehäuses befindet sich ein weiterer Stecker 16′, über den weitere Verbraucher, hier als Motorkabelbaum und Zündspulen bezeichnet, ange­ schlossen sind. Auch befindet sich ein Masseanschluß 17 im Stecker 16′, über den die beiden Thyristoren (nicht dargestellt) mit Masse verbunden sind. Das Gehäuse 12′ kann durch Lösen der Stecker 16 und 16′ im Bedarfsfall ohne weiteres entfernt und durch ein intaktes Modul ersetzt werden.In the constructive embodiment of the invention shown in FIG. 3, two securing devices according to the invention for a total of two parallel lines are arranged in a housing 12 '. The lines labeled KL15 and KL30 (similar to ignition and permanent positive lead) are connected via a plug 16 to the housing 12 'for a so-called fuse module. The two lines run parallel to each other and are each protected by a fuse. At the output of this housing there is another connector 16 ', on the other consumers, here referred to as the engine wiring harness and ignition coils, are connected. There is also a ground connection 17 in the connector 16 ', via which the two thyristors (not shown) are connected to ground. The housing 12 'can be easily removed by loosening the connector 16 and 16 ' if necessary and replaced by an intact module.

Claims (5)

1. Sicherungsvorrichtung für einen Stromkreis in Fahrzeugen mit einer Schmelzsicherung, die bei einer über dem Nennstrom liegenden Strombe­ lastung den Stromkreis bleibend unterbricht, dadurch gekennzeichnet, daß der Stromkreis einen Stromstärke-Sensor (7) enthält, daß der Schmelzsi­ cherung (5) einen Kurzschluß-Thyristor (10) nachgeschaltet ist und daß der Thyristor (10) gezündet ist, wenn die Stromstärke über dem Nennstrom liegt.1. Safety device for a circuit in vehicles with a fuse, the load at a current load above the rated current interrupts the circuit, characterized in that the circuit contains a current sensor ( 7 ) that the fuse ( 5 ) a short circuit -Thyristor ( 10 ) is connected downstream and that the thyristor ( 10 ) is ignited when the current is above the nominal current. 2. Sicherungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Stromstärke-Sensor (10) auf einen Komparator (8) geführt ist, dem ein Re­ ferenzwert für den Nennstrom zugeführt ist.2. Safety device according to claim 1, characterized in that the current intensity sensor ( 10 ) is guided to a comparator ( 8 ) to which a reference value for the nominal current is supplied. 3. Sicherungsvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Komparator (8) den Thyristor (10) zündet.3. Safety device according to claim 2, characterized in that the comparator ( 8 ) ignites the thyristor ( 10 ). 4. Sicherungsvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekenn­ zeichnet, daß der Stromstärke-Sensor (7), die Schmelzsicherung (5) und der Thyristor (10) in einem gemeinsamen Gehäuse (12) angeordnet sind.4. Safety device according to one of claims 1 to 3, characterized in that the current intensity sensor ( 7 ), the fuse ( 5 ) and the thyristor ( 10 ) are arranged in a common housing ( 12 ). 5. Sicherungsvorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß das Gehäuse über elektrische Steckverbindungen (16, 16′) in den Stromkreis (KL15, KL30) eingeschaltet ist.5. Safety device according to claim 4, characterized in that the housing is switched on via electrical plug connections ( 16 , 16 ') in the circuit (KL15, KL30).
DE1995127997 1995-07-31 1995-07-31 Safety device for a circuit in vehicles Expired - Fee Related DE19527997C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1995127997 DE19527997C2 (en) 1995-07-31 1995-07-31 Safety device for a circuit in vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1995127997 DE19527997C2 (en) 1995-07-31 1995-07-31 Safety device for a circuit in vehicles

Publications (2)

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DE19527997A1 true DE19527997A1 (en) 1997-02-06
DE19527997C2 DE19527997C2 (en) 1998-02-05

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19735546A1 (en) * 1997-08-16 1999-02-18 Daimler Benz Ag Fuse element for automobile current circuit
DE19744765A1 (en) * 1997-10-10 1999-04-15 Daimler Chrysler Ag Fuse element circuit for automobile electrics
EP0940835A2 (en) * 1998-03-04 1999-09-08 TRW Automotive Electronics & Components GmbH & Co. KG Fuse particularly for applications in the motor car field
DE19835485A1 (en) * 1998-08-07 2000-02-10 Daimler Chrysler Ag Tripping safety mechanism for electrical conductors in motor vehicle
FR2782190A1 (en) * 1998-08-07 2000-02-11 Daimler Chrysler Ag METHOD AND DEVICE FOR TRIGGERING A FUSE CIRCUIT BREAKER FOR AN ELECTRICAL CONDUCTOR IN A MOTOR VEHICLE
DE19915594A1 (en) * 1999-04-07 2000-10-19 Daimler Chrysler Ag Temperature compensated fuse element for electrical units in vehicles, has melting safeguard and cold conductor fuse which are arranged to establish parallel current path between power supply and load connections
DE19946826A1 (en) * 1999-09-30 2001-05-10 Daimler Chrysler Ag Fuse for electric circuit in motor vehicle, has microcontroller that regulates a trigger to enable the thermal heating element of the fuse to provide the appropriate heat energy for the fuse
EP1155919A2 (en) * 2000-05-18 2001-11-21 LEONI Bordnetz-Systeme GmbH & Co KG Electric power supply network, especially for a vehicule, and short-circuit detection process in this network
DE10049071A1 (en) * 2000-10-02 2002-04-25 Micronas Gmbh Circuit protection device, especially in vehicles, has terminals protruding out of housing formed in one piece with conducting section inside housing forming preferred breakage point
US6492747B1 (en) 1997-12-20 2002-12-10 Leoni Bordnetz-Systeme Gmbh & Co. Kg Electric fuse
FR2870996A1 (en) * 2004-05-28 2005-12-02 Cartier Technologies Soc Par A Electrical and electronic circuits protection device for motor vehicle, has disconnection units that cause breakdown of protection fuse if closed current traversing closed current circuit becomes abnormally high
FR2911428A1 (en) * 2007-01-12 2008-07-18 Peugeot Citroen Automobiles Sa Electrical circuit i.e. printed circuit board, protecting device for motor vehicle, involves cutting power supply at place at which measurement indicates presence of malfunction in electrical circuit using fuse controlled by switch
US7746616B2 (en) * 2005-09-30 2010-06-29 Infineon Technologies Ag Protection circuit and method of protecting a load circuit
DE102009018612A1 (en) * 2009-04-23 2010-10-28 Ellenberger & Poensgen Gmbh Trigger element for a motor vehicle electrical system
DE102019120565A1 (en) * 2019-07-30 2021-02-04 Bayerische Motorenwerke Aktiengesellschaft Control unit and method for triggering a fuse in an on-board power supply system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19909590A1 (en) * 1999-03-04 2000-09-07 Delphi Tech Inc Security system
DE29921924U1 (en) * 1999-12-14 2000-03-09 Pudenz Wilhelm Gmbh Fuse
DE10008773A1 (en) * 2000-02-24 2001-08-30 Hella Kg Hueck & Co Overvoltage protection circuit for 14 Volt branch of 42 Volt/14 Volt vehicle on-board electrical system has switch that switches output to earth if short between 14, 42 Volt branches

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1929020A1 (en) * 1969-06-07 1970-12-17 Doelle Geb Hilvert Electrical overcurrent protection device with short switch-off time, preferably for intrinsically safe circuits

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1929020A1 (en) * 1969-06-07 1970-12-17 Doelle Geb Hilvert Electrical overcurrent protection device with short switch-off time, preferably for intrinsically safe circuits

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19735546A1 (en) * 1997-08-16 1999-02-18 Daimler Benz Ag Fuse element for automobile current circuit
DE19744765A1 (en) * 1997-10-10 1999-04-15 Daimler Chrysler Ag Fuse element circuit for automobile electrics
WO1999019895A1 (en) * 1997-10-10 1999-04-22 Daimlerchrysler Ag Circuit arrangement and process for operating a safety fuse
US6492747B1 (en) 1997-12-20 2002-12-10 Leoni Bordnetz-Systeme Gmbh & Co. Kg Electric fuse
US6445276B2 (en) 1998-03-04 2002-09-03 Trw Automotive Electronics & Components Gmbh & Co. Kg Electrical fuse for use in motor vehicles
EP0940835A2 (en) * 1998-03-04 1999-09-08 TRW Automotive Electronics & Components GmbH & Co. KG Fuse particularly for applications in the motor car field
EP0940835A3 (en) * 1998-03-04 1999-11-03 TRW Automotive Electronics & Components GmbH & Co. KG Fuse particularly for applications in the motor car field
DE19835485A1 (en) * 1998-08-07 2000-02-10 Daimler Chrysler Ag Tripping safety mechanism for electrical conductors in motor vehicle
DE19835781C2 (en) * 1998-08-07 2002-10-24 Daimler Chrysler Ag Method and device for triggering a fuse for electrical conductors in a motor vehicle
US6141202A (en) * 1998-08-07 2000-10-31 Daimlerchrysler Ag Method and apparatus for triggering a fuse
FR2782190A1 (en) * 1998-08-07 2000-02-11 Daimler Chrysler Ag METHOD AND DEVICE FOR TRIGGERING A FUSE CIRCUIT BREAKER FOR AN ELECTRICAL CONDUCTOR IN A MOTOR VEHICLE
DE19835781A1 (en) * 1998-08-07 2000-02-17 Daimler Chrysler Ag Triggering of safety device protecting vehicle electrical wiring is avoided during transient start-up current peak by temporarily raising electronically-controlled triggering threshold
DE19915594A1 (en) * 1999-04-07 2000-10-19 Daimler Chrysler Ag Temperature compensated fuse element for electrical units in vehicles, has melting safeguard and cold conductor fuse which are arranged to establish parallel current path between power supply and load connections
DE19946826A1 (en) * 1999-09-30 2001-05-10 Daimler Chrysler Ag Fuse for electric circuit in motor vehicle, has microcontroller that regulates a trigger to enable the thermal heating element of the fuse to provide the appropriate heat energy for the fuse
EP1155919A2 (en) * 2000-05-18 2001-11-21 LEONI Bordnetz-Systeme GmbH & Co KG Electric power supply network, especially for a vehicule, and short-circuit detection process in this network
EP1155919A3 (en) * 2000-05-18 2003-05-14 LEONI Bordnetz-Systeme GmbH & Co KG Electric power supply network, especially for a vehicule, and short-circuit detection process in this network
DE10049071A1 (en) * 2000-10-02 2002-04-25 Micronas Gmbh Circuit protection device, especially in vehicles, has terminals protruding out of housing formed in one piece with conducting section inside housing forming preferred breakage point
DE10049071B4 (en) * 2000-10-02 2004-12-16 Micronas Gmbh Safety device for a circuit, in particular in motor vehicles
FR2870996A1 (en) * 2004-05-28 2005-12-02 Cartier Technologies Soc Par A Electrical and electronic circuits protection device for motor vehicle, has disconnection units that cause breakdown of protection fuse if closed current traversing closed current circuit becomes abnormally high
US7746616B2 (en) * 2005-09-30 2010-06-29 Infineon Technologies Ag Protection circuit and method of protecting a load circuit
FR2911428A1 (en) * 2007-01-12 2008-07-18 Peugeot Citroen Automobiles Sa Electrical circuit i.e. printed circuit board, protecting device for motor vehicle, involves cutting power supply at place at which measurement indicates presence of malfunction in electrical circuit using fuse controlled by switch
DE102009018612A1 (en) * 2009-04-23 2010-10-28 Ellenberger & Poensgen Gmbh Trigger element for a motor vehicle electrical system
DE102019120565A1 (en) * 2019-07-30 2021-02-04 Bayerische Motorenwerke Aktiengesellschaft Control unit and method for triggering a fuse in an on-board power supply system

Also Published As

Publication number Publication date
DE19527997C2 (en) 1998-02-05

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