WO2005114806A1 - Relais electronique - Google Patents

Relais electronique Download PDF

Info

Publication number
WO2005114806A1
WO2005114806A1 PCT/EP2005/004382 EP2005004382W WO2005114806A1 WO 2005114806 A1 WO2005114806 A1 WO 2005114806A1 EP 2005004382 W EP2005004382 W EP 2005004382W WO 2005114806 A1 WO2005114806 A1 WO 2005114806A1
Authority
WO
WIPO (PCT)
Prior art keywords
module
signal
electronic relay
current
output
Prior art date
Application number
PCT/EP2005/004382
Other languages
German (de)
English (en)
Inventor
Wolfgang Sörgel
Original Assignee
Ellenberger & Poensgen 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 Ellenberger & Poensgen Gmbh filed Critical Ellenberger & Poensgen Gmbh
Publication of WO2005114806A1 publication Critical patent/WO2005114806A1/fr

Links

Classifications

    • 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
    • H02H3/08—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 responsive to excess current
    • H02H3/087—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 responsive to excess current for dc applications
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/10—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to mechanical injury, e.g. rupture of line, breakage of earth connection

Definitions

  • the invention relates to an electronic relay with a power component that can be switched by a control module, with a voltage input for a supply voltage and with a load output for connecting a load.
  • supply voltage is understood to mean, in particular, one in the low-voltage range, for example in the DC12V or DC24V range.
  • Such an electronic relay is often used for protection and for remotely controllable switching and for the diagnosis of electrical circuits in electrical systems. Particularly in the field of plant technology and vehicle electronics, the electronic relay enables indirect switching of the load circuits of electrical consumers and additional components in connection with monitoring and protection of the respective load circuit in the event of an overload and / or short circuit.
  • the relay with cubic or flat design manufactured and sold by the company ETA Elektrotechnische Apparate GmbH under the name "Smart Power Relay”, contains the for an operating voltage range from DC9V to DC32V and especially for the connection of DC12V and DC24V loads or supply voltages Combination of an exclusively electronic relay function with additional overload and short-circuit protection, typically starting at 1.3 times the nominal current (1, 3 x IN), the current is switched off after a predetermined time, depending on the application in the range between 50ms up to 200ms can be selected.
  • the high short-circuit current is initially limited and switched off within a millisecond.
  • the control current required for switching on the load for the electronic relay which is in the mA range, reduces the control power required to a minimum.
  • the electronic relays available in fixed currents from 1A to 25A enable wear-free and noise-free switching of high inrush currents from motors, lamp loads and capacitive loads.
  • the electronic relay has status and diagnostic functions. In this way, a control message and / or a total error message can be displayed or reported back to a higher-level control or management system as a status output.
  • a further diagnostic function is provided in the form of an analog output.
  • the analog voltage signal in the range from 0V to 5V that can be tapped there can be used in the normal tolerance range for load or in the short-circuit-proof power semiconductors (Protected Field Effect Transistor) usually used in the electronic relay, which are designed for load currents up to 500A at room temperature Nominal currents up to 50A.
  • Protected Field Effect Transistor Protected Field Effect Transistor
  • the invention has for its object to provide an electronic relay of the type mentioned, in which the analog signal can also be used for comparatively small nominal or load currents, in particular for load currents of less than 50A.
  • an analog signal that can be tapped at a signal output of the control module depicts the current load current.
  • an amplifier module is provided, to which the load current-proportional analog signal that can be tapped at the signal output of the control module of the electronic relay is supplied and on the output side a control signal can be tapped that reliably depicts the current load current.
  • the invention is based on the consideration that the load current-proportional analog signal already available in an electronic relay of the type mentioned at the beginning is used for mapping the current load current even at small nominal currents below 50A, in particular from 1A to 25A, and for control purposes for the electronic relay itself or a higher-level control system can be used if the analog signal, which is not usable for load current mapping or mirroring, is processed in a suitable manner.
  • a corresponding amplifier circuit, the output signal of which is then suitable for diagnostic and / or control purposes, is particularly suitable for such processing.
  • FIG. 1 shows a block diagram of an electronic relay with a power section that can be switched by a control module and with an amplifier circuit for processing an analog signal proportional to the load current.
  • the figure shows the electronic relay 1 with a power module 3 in the form of a field effect transistor (FET), in particular a protected field effect transistor, and a control module 4 in a first function module 2.
  • the power module 3 is connected to a voltage input 5 (LINE + ) for an operating or supply voltage Uv and on the source side to a load output 6 (LOAD), to which a consumer or a load 7 can be connected.
  • the power section 3 is connected to a control output SA.
  • the control module 4 is also connected to a ground or ground connection 8 (GND).
  • An analog output Us connected to the control module 4 is led via a diode D1 for voltage stabilization and current detection and via an ohmic resistor R2 to an input E (+) of an amplifier module 9.
  • an NTC resistor RT and a resistor R1 are connected in parallel between a tap between the diode D1 and the resistor R2 and ground, and a resistor R3 is connected in series for this purpose.
  • a capacitor C is connected to ground, which forms an RC element in connection with the resistor R2. This acts as a filter for regulating the input voltage of the amplifier module 9.
  • the further (-) input E 2 of the amplifier module 9 is led to the output A of the amplifier module 9 via a resistor R4.
  • the input E 2 and / or the output A of the amplifier module 9 is also via a Resistor R5 to ground and via a diode D2 to a voltage supply of a function block 16 described below.
  • the amplifier module 9 supplies at its output A an evaluable control signal S
  • the amplifier module 9 is routed to a standard interface 10. This converts the control signal S 1 which can be tapped at the amplifier module 9 into a current signal, a voltage signal or a digital clock signal.
  • the control signal SN (U (l)) which can be tapped at the standard interface 10 can be routed to a higher-level controller.
  • This control signal SN which is proportional to the load current II flowing through the load 7, is a current signal with current values from OmA to 20 mA or 4mA to 20mA or a voltage signal with voltage values between 0V and 5V, 1V and 5V, 0V and 10V or 2V and 20V or a digital signal or a digital interface.
  • the respective value of this current or voltage signal S is proportional to the respective load current II actually flowing through the load 7.
  • the output A of the amplifier module 9 is furthermore via a function module 11 for overload and / or short circuit detection as well as via a timing element 12 and a logic module 13 in the form of an AND gate with a control input S E of the function module 2 led to the control module 4 connected.
  • the switch-off signal SAUS which can be tapped behind the timer 12, is also fed to a function module 14 for error and status reporting.
  • This function block 14 is also supplied with a wire break signaling signal EDB, which is generated by a corresponding function block 15 for determining a minimum load current.
  • This function module 15 is also connected to the amplifier module 9 on the output side.
  • the function block 15 detects when the load current II falls below a certain threshold value, which is expediently less than 0.2 x IN and thus below about 20% of the nominal current I N.
  • the function block 15 thus detects a wire break in the switched-on state of the electronic relay 1, in which the load current II flows through the consumer 7.
  • the load output 6 of the function block 2 is led to the voltage supply UB of the amplifier block 9 via a function block 16.
  • the function module 16 delivers an alarm signal ADB to the function module 14, which generates a corresponding error message.
  • a control message AS and a sum error message SF can also be tapped at the function block 14. Both messages AS, SF can also be displayed separately using LEDs on the device.
  • a sum error message generated by the control module 4 and which can be tapped at a corresponding message output SF and which represents an overload or short-circuit case detected by the control module 4 is also led to this function module 14 for error and status reporting.
  • a control message generated by the control module 4, which can be picked up at a corresponding signal output S A s of the function module 2, is also routed to the function module 14 for the corresponding status message.
  • the control message which can be tapped at the signal output S A s is generated by the control module 4 when the latter enters via the control input S E Received ON or OFF signal from the logic device 13.
  • a field effect transistor (FET) with a nominal current of 25 A is expediently used as the power unit 3.
  • FET field effect transistor
  • relay 1 designed for a nominal current IN of 7.5A or 10A an FET with a nominal current of 33A is used.
  • an FET with a nominal current of 115A is used.
  • an FET with a nominal current of 165A is used.
  • the use of the corresponding FET with the specified nominal current enables it to be used without additional coolant, for example in the form of a heat sink.
  • the use of an FET with a comparatively low nominal current would lead to its impermissible heating if the ratio between the nominal current IN of relay 1 and the nominal current of the FET is too small.
  • the NTC resistor R ⁇ provided for the temperature compensation can alternatively also be implemented by a corresponding NTC resistor RT connected in parallel with the feedback resistor R4 of the amplifier module 9, by a silicon temperature sensor or a PT1000.

Abstract

L'invention concerne un relais électronique (1) comportant une partie de puissance (3) commutable par un composant de commande (4) et présentant une entrée de tension (5), par laquelle passe une tension d'alimentation (UV) dans la plage basse tension, en particulier dans la plage courant continu de 12V ou courant continu de 24V, ainsi qu'une sortie pour charge (6), destinée à être raccordée à une charge (7). Dans ledit relais électronique (1), un signal analogique proportionnel au courant de charge peut être prélevé au niveau d'une sortie de signal (US) du composant de commande (4), lequel est conduit, côté entrée, à un composant amplificateur (9) au niveau duquel, côté sortie, un signal de commande (SI), reproduisant le courant de charge (IL) du moment, peut être prélevé.
PCT/EP2005/004382 2004-05-22 2005-04-23 Relais electronique WO2005114806A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200420008137 DE202004008137U1 (de) 2004-05-22 2004-05-22 Elektronisches Relais
DE202004008137.7 2004-05-22

Publications (1)

Publication Number Publication Date
WO2005114806A1 true WO2005114806A1 (fr) 2005-12-01

Family

ID=34966752

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/004382 WO2005114806A1 (fr) 2004-05-22 2005-04-23 Relais electronique

Country Status (2)

Country Link
DE (1) DE202004008137U1 (fr)
WO (1) WO2005114806A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202014003691U1 (de) 2013-07-26 2014-07-01 Ellenberger & Poensgen Gmbh Lastüberwachung mittels einer Überstromschutzeinrichtung
DE202014004493U1 (de) 2014-05-27 2015-08-28 Ellenberger & Poensgen Gmbh Elektronisches Relais

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4831483A (en) * 1987-01-13 1989-05-16 Kabushiki Kaisha Toshiba Abnormality detection alarm circuit for output circuit
US4945445A (en) * 1988-09-29 1990-07-31 Gentron Corporation Current sense circuit
US5061863A (en) * 1989-05-16 1991-10-29 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Transistor provided with a current detecting function
DE4110240C1 (en) * 1991-03-28 1992-10-08 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Vehicle current path protection device - separates battery from load upon occurrence of electrical fault
DE4326527A1 (de) * 1993-08-06 1995-02-09 Bayerische Motoren Werke Ag Sicherheitsvorrichtung in Kraftfahrzeugen zum Abschalten des durch eine Kraftfahrzeugbatterie abgegebenen elektrischen Stromes
EP1294069A1 (fr) * 2001-09-18 2003-03-19 Magnetek S.p.A. Déclencheur électronique

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4223902C2 (de) * 1991-08-16 1995-01-26 Walter Nicolai Leckanzeiger für einwandige Behälter mit flexibler Kunststoff-Leckschutzauskleidung
US5280404A (en) * 1992-05-15 1994-01-18 Bio-Rad Laboratories, Inc. Arc detection system
DE19811176A1 (de) * 1997-10-11 1999-04-15 Bosch Gmbh Robert Anordnung und Verfahren zur Steuerung einer elektrischen Maschine
DE29824874U1 (de) * 1998-07-10 2003-04-30 Ellenberger & Poensgen Schutzschalteinrichtung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4831483A (en) * 1987-01-13 1989-05-16 Kabushiki Kaisha Toshiba Abnormality detection alarm circuit for output circuit
US4945445A (en) * 1988-09-29 1990-07-31 Gentron Corporation Current sense circuit
US5061863A (en) * 1989-05-16 1991-10-29 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Transistor provided with a current detecting function
DE4110240C1 (en) * 1991-03-28 1992-10-08 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Vehicle current path protection device - separates battery from load upon occurrence of electrical fault
DE4326527A1 (de) * 1993-08-06 1995-02-09 Bayerische Motoren Werke Ag Sicherheitsvorrichtung in Kraftfahrzeugen zum Abschalten des durch eine Kraftfahrzeugbatterie abgegebenen elektrischen Stromes
EP1294069A1 (fr) * 2001-09-18 2003-03-19 Magnetek S.p.A. Déclencheur électronique

Also Published As

Publication number Publication date
DE202004008137U1 (de) 2005-09-29

Similar Documents

Publication Publication Date Title
EP1186086B1 (fr) Systeme de distribution de courant
DE102007031494B4 (de) Energieversorgungssteuerung
DE102017106896A1 (de) Elektronischer Schalter für elektronische Sicherung
DE19728783A1 (de) Überspannungsschutzschaltung, insbesondere für Eingänge integrierter Schaltungen
EP2980660B1 (fr) Procédé et dispositif de surveillance et de commutation d'un circuit de charge
DE102019119975B3 (de) Intelligenter elektronischer schalter
EP2412208B1 (fr) Protection contre les surtensions pour un dispositif de bus
DE10213254B4 (de) Lastbetriebssystem und Verfahren dazu
DE102019125122A1 (de) Intelligenter elektronischer schalter
WO2005114806A1 (fr) Relais electronique
DE3441403A1 (de) Schaltungsanordnung zum schalten ohmscher und induktiver elektrischer verbraucher in gleich- und wechselstromkreisen
EP3740836B1 (fr) Circuit pour la détection de défauts de circuit et pour la prévention de surtensions dans des régulateurs
EP2133996B1 (fr) Commutateur destiné à la commande d'un récepteur électrique
EP0671088A1 (fr) Circuit pour la commande d'un ensemble de recepteurs, notamment de regulateurs de puissance de lampes.
DE102007025243B3 (de) Digitale Eingangsschaltung
WO2001041277A2 (fr) Unite de surveillance pour alimentations electriques
DE102015015466B4 (de) Elektronische Sicherungseinrichtung
DE102014103624B4 (de) Ansteuerschaltung für mehrere Lasten
EP1279208A1 (fr) Circuit monolithique integre pour reguler le flux lumineux d'une diode laser
DE2621277C3 (de) Verfahren zum Schützen einer Fernsprechvermittlungsanlage gegen thermische Überlastung und Schaltungsanordnung zur Durchführung des Verfahrens
DE4330114A1 (de) Schaltungsanordnung zum Steuern einer Mehrzahl von Verbrauchern, insbesondere Vorschaltgerät von Lampen
DE102022133062B3 (de) Schaltnetzteil zur Kurzschluss-Überwachung und Bereitstellung einer intern erzeugten Versorgungsspannung im Kurzschluss-Fall
EP2200141B1 (fr) Agencement de commutation destiné à la protection de consommateurs électriques
DE102017108101A1 (de) Detektion offener Lastkreise in Ausgangsstufen
EP1434349B1 (fr) Circuit de protection d'un transistor contre la surtension et la surintensité de courant

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DPEN Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE