EP0392058A1 - Circuit de commande d'au moins un relais électromagnétique - Google Patents

Circuit de commande d'au moins un relais électromagnétique Download PDF

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Publication number
EP0392058A1
EP0392058A1 EP89106654A EP89106654A EP0392058A1 EP 0392058 A1 EP0392058 A1 EP 0392058A1 EP 89106654 A EP89106654 A EP 89106654A EP 89106654 A EP89106654 A EP 89106654A EP 0392058 A1 EP0392058 A1 EP 0392058A1
Authority
EP
European Patent Office
Prior art keywords
relay
circuit arrangement
current
voltage
reference coil
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Withdrawn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
EP89106654A
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German (de)
English (en)
Inventor
Richard Siepmann
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP89106654A priority Critical patent/EP0392058A1/fr
Priority to US07/503,681 priority patent/US5107391A/en
Priority to PT93734A priority patent/PT93734A/pt
Priority to JP2096635A priority patent/JPH02295016A/ja
Publication of EP0392058A1 publication Critical patent/EP0392058A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
    • H01H47/32—Energising current supplied by semiconductor device
    • H01H47/325—Energising current supplied by semiconductor device by switching regulator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
    • H01H47/04—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current
    • H01H2047/046—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current with measuring of the magnetic field, e.g. of the magnetic flux, for the control of coil current
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S323/00—Electricity: power supply or regulation systems
    • Y10S323/907—Temperature compensation of semiconductor

Definitions

  • the invention relates to a circuit arrangement for actuating at least one electromagnetic relay via an electronic switch which is controlled in pulses.
  • a pulse control of relays is known, for example from DE-A-31 44 000.
  • the resulting current through the coil can be set to a minimum value in accordance with the required holding excitation, in order to reduce the power consumed in the coil and thus the heating to keep the relay low.
  • a fixed duty cycle for this pulse control can only be used if the voltage does not change and the ambient temperature remains approximately the same.
  • An application for the present invention is the use of relays in motor vehicles, where they are tightly packed in relay boxes, where they are not only subject to strong temperature fluctuations from the outside, but also there is a risk of mutual heating within the relay boxes.
  • Another problem is the fact that the battery voltage fluctuates very strongly in a motor vehicle.
  • the excitation coils are moved to the safe side, ie. H. designed for the worst cases, which leads to a correspondingly strong heat development in the relays in question and for the neighboring relays during continuous operation.
  • the Previously known pulse control can be carried out in such a way that the coil current or the voltage would be measured individually for each individual relay and evaluated for the corresponding control of an associated electronic switch.
  • Such individual control circuits would not only be very costly given the increasing number of relays, such as those used in a motor vehicle or in comparable applications, but would also require a large amount of space.
  • the aim of the invention is therefore to provide a control circuit for relays with which an arbitrary number of commonly housed, but individually switched relays can be controlled in such a way that safe holding excitation is ensured, but excessive power consumption and thus undesirable heat development can be avoided .
  • this circuit arrangement has the following features: All excitation circuits of the individually switchable relay windings can be connected in parallel with one another with the first connection to a pole of a DC voltage source and with their second connection via the switching path of an electronic switch to the second pole of the DC voltage source, - A control device is provided which switches the electronic switch on and off, and - The pulse duty factor of the switching pulses is set in the control device depending on the operating voltage of the voltage source and on the ambient temperature of the relay so that the minimum holding current required for the connected relay is not undercut.
  • a minimum holding current is thus set in the control device such that it is just sufficient for all connected or connectable relays, fluctuations in the operating voltage and the ambient temperature always being taken into account.
  • the circuit ar works of course with a relay. The particular advantage results from the group control, since the control device only has to be provided once.
  • the pulse duty factor of the switching pulses is expediently set in the control device in such a way that the holding excitation is generated for each of the connected relays. If, for example, the operating voltage drops to the holding voltage, the clocking changes into a continuous current. Since the withstand voltage is approximately 50% of the nominal voltage, approximately 75% of the power can be saved in this case. However, if the operating voltage rises above the nominal voltage, for example in a motor vehicle to 15 V instead of 12 V nominal voltage, only about 1/6 of the heat is generated in this critical case, as a result of which the temperature of a motor vehicle relay box can be significantly reduced.
  • each excitation circuit of a relay is expediently scanned by a monitoring circuit, and when an additional relay is switched on, a continuous pulse is then applied to the switch-on time electronic switch.
  • Such an input stage for recognizing the control state is necessary for each relay, but this only slightly increases the costs for the overall arrangement, since the main part of the control device with the power stage, i. that is, the electronic switch only has to be provided once for the overall arrangement.
  • the control device can be a digital control device, e.g. B. a microcontroller, the control states of the individual relays as digital input variables and the values measured by sensors for the ambient temperature and the operating voltage are entered as analog input variables.
  • the characteristic values of the relays to be switched on are Expediently stored in the form of tables or characteristic fields, so that the corresponding duty cycle for the electronic switch can be generated according to a calculation rule for the respective input values.
  • control device has a reference coil arranged in thermal contact with the relay, the time constant of which is less than or equal to that of the fastest responding relay, the current flowing in the reference coil being monitored by means of a current monitor and for Determination of the duty cycle is evaluated.
  • This evaluation can take place in such a way that the electronic switch is switched off when the current in the reference coil exceeds a predetermined threshold value above the holding current of the relays, and that the electronic switch is switched on when the current in the reference coil falls below a predetermined threshold value at the holding current .
  • This current monitoring can be carried out, for example, by conventional sensors, such as a measuring resistor. Current monitoring by measuring the magnetic flux in the reference coil via, for example, a field plate is also expedient.
  • FIG. 1 shows a control circuit for a number of relays, the excitation coils RL1, RL2, RL3 ... RLn of which are arranged in parallel.
  • About related Switches s1, s2, s3 ... sn can be connected individually to the operating voltage U B.
  • the end points of the excitation coils RL1 to RLn opposite the switches are located on the switching path of an electronic switch, for example a field effect transistor FET. All relays RL1 to RLn are arranged in a common relay box RB, which is indicated by a broken line.
  • the electronic switch FET is controlled in pulses by a group control device GSE, which generates a pulse ratio at least corresponding to the holding excitation for the relays that can be connected in a pulse generator IG1.
  • This duty cycle is determined as a function of the operating voltage U B and the temperature in the relay box RB.
  • a voltmeter V is connected in parallel to the excitation circuits, and a temperature sensor TS, which is located in the relay box itself, supplies the respectively valid temperature values.
  • the duty cycle is determined from the operating voltage and the temperature in each case according to a function dependent on the relay characteristic values.
  • This function or the characteristic data are stored, for example, in a function memory FM connected to the pulse generator IG1.
  • a free-wheeling diode FD is connected in parallel with the windings in a known manner.
  • FIG. 2 shows an approximately modified embodiment for an analog operation of the group control unit GSE.
  • the excitation windings RL1 to RLn can optionally be connected in parallel to the operating voltage U B via the switches s1 to sn.
  • the connection is scanned via the scanning lines A1 to An, in FIG. 1, for example, the voltage jump across the resistor R1 and the capacitor C is scanned via two Schmitt triggers ST1 and ST2 and evaluated via a downstream AND gate AN to generate a signal becomes.
  • a continuous pulse of, for example, 10 ms is generated in a corresponding pulse generator IG3 via the downstream OR gate OR1 when an additional relay is connected.
  • This continuous pulse is applied directly to the electronic switch FET via the diode D2 and the operational amplifier OP.
  • the actual clock ratio for normal operation is determined in the embodiment of FIG. 2 by a reference coil RS which is arranged in the relay box RB and has a time constant (L / R) which is less than or equal to the time constant of the fastest switching relay.
  • This reference coil is connected to the operating voltage in parallel with the excitation coils of the relays, and its current is monitored to obtain the duty cycle. Since the reference coil is in thermal contact with the relays, its resistance changes as does that of the excitation coils. In addition, the current rise is accelerated at a higher operating voltage, which leads to a reduction in the duty cycle.
  • Current monitoring can be carried out in a known manner on a measuring resistor; in the exemplary embodiment shown, it takes place via a magnetic flux measurement with a field plate FP on the reference coil RS.
  • This field plate FP changes its resistance with the magnetic flux in the reference coil. It is included as a variable resistor together with the resistors R2, R3 and R4 in a voltage divider circuit at the two inputs of the operational amplifier OP.
  • the electronic switch is switched on via the operational amplifier OP and switched off again at a predetermined current, for example at a 10% higher current.
  • a predetermined current for example at a 10% higher current.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Relay Circuits (AREA)
  • Control Of Direct Current Motors (AREA)
EP89106654A 1989-04-13 1989-04-13 Circuit de commande d'au moins un relais électromagnétique Withdrawn EP0392058A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP89106654A EP0392058A1 (fr) 1989-04-13 1989-04-13 Circuit de commande d'au moins un relais électromagnétique
US07/503,681 US5107391A (en) 1989-04-13 1990-04-03 Circuit for driving one or more electromagnetic relays which uses minimum power and results in minimum temperature in the relays
PT93734A PT93734A (pt) 1989-04-13 1990-04-11 Sistema de circuitos para comandar pelo menos um rele electromagnetico
JP2096635A JPH02295016A (ja) 1989-04-13 1990-04-13 少なくとも１つの電磁リレーの制御回路装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89106654A EP0392058A1 (fr) 1989-04-13 1989-04-13 Circuit de commande d'au moins un relais électromagnétique

Publications (1)

Publication Number Publication Date
EP0392058A1 true EP0392058A1 (fr) 1990-10-17

Family

ID=8201227

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89106654A Withdrawn EP0392058A1 (fr) 1989-04-13 1989-04-13 Circuit de commande d'au moins un relais électromagnétique

Country Status (4)

Country Link
US (1) US5107391A (fr)
EP (1) EP0392058A1 (fr)
JP (1) JPH02295016A (fr)
PT (1) PT93734A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0471891A2 (fr) * 1990-08-21 1992-02-26 Siemens Aktiengesellschaft Circuit pour la commande d'un groupe de relais
EP0562908A1 (fr) * 1992-03-24 1993-09-29 Valeo Electronique Circuit d'alimentation pour relais électromagnétique
DE4332995C1 (de) * 1993-09-28 1994-10-20 Siemens Ag Verfahren zur Ansteuerung von parallel angeordneten Relais
DE102007023189A1 (de) * 2007-05-18 2008-11-20 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Schaltungsanordnung zur Stromregelung einer Ventilspule
WO2016045856A1 (fr) * 2014-09-23 2016-03-31 Robert Bosch Gmbh Actionneur électrique à préchauffage
EP2383765B1 (fr) 2010-04-29 2020-01-15 Kissling Elektrotechnik GmbH Relais doté d'une commutation de sécurité intégrée
EP4009345A1 (fr) * 2020-12-01 2022-06-08 PTC Rail Services GmbH Agencement de circuits et procédé de fonctionnement optimisé en énergie des systèmes d'entraînement électromagnétique

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4140586C2 (de) * 1991-12-10 1995-12-21 Clark Equipment Co N D Ges D S Verfahren und Steuereinrichtung zur Steuerung des Stroms durch eine Magnetspule
US5204633A (en) * 1992-02-25 1993-04-20 International Business Machines Corporation Electromagnetic contactor with closure fault indicator
JP2597635Y2 (ja) * 1992-05-01 1999-07-12 株式会社小松製作所 電磁開閉器の駆動回路
DE19503536A1 (de) * 1995-02-03 1996-08-08 Bosch Gmbh Robert Schaltungsanordnung für ein Einrückrelais
DE19939650C2 (de) 1999-08-13 2001-08-02 Siemens Ag Schaltungsanordnung zum Betrieb eines Relais
US6976569B2 (en) * 2003-04-04 2005-12-20 Visteon Global Technologies, Inc. Pulse width modulation of brake shift interlock solenoid
US7405918B2 (en) * 2004-12-10 2008-07-29 Yazaki North America, Inc. Inductive load control
US20070216225A1 (en) * 2006-03-16 2007-09-20 Lear Corporation Vehicle junction box and method of controlling the same
US7684168B2 (en) * 2007-01-15 2010-03-23 Yazaki North America, Inc. Constant current relay driver with controlled sense resistor
CN103107046A (zh) * 2011-11-14 2013-05-15 力铭科技股份有限公司 继电器驱动电路
US20130201594A1 (en) * 2012-02-03 2013-08-08 Pao-Hung Lin Driving circuit for relay
JP2015011836A (ja) * 2013-06-27 2015-01-19 古河電気工業株式会社 リレー制御装置
US10186857B2 (en) 2016-05-16 2019-01-22 Astronics Advanced Electronic Systems Corp. Paralleling mechanical relays for increased current carrying and switching capacity
US10734177B2 (en) * 2017-09-21 2020-08-04 Moxa Inc. Electromagnetic relay device and control method thereof
JP6671440B1 (ja) * 2018-09-28 2020-03-25 株式会社Ｓｕｂａｒｕ ジャンクションボックス制御装置
CN114788121A (zh) * 2019-12-09 2022-07-22 尼科公司 具有跳线跨接启动电流共享系统的跳线跨接启动装置和跳线跨接启动电流共享方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3144000A1 (de) * 1981-11-05 1983-05-11 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches relais fuer impulsbetrieb
FR2568715A1 (fr) * 1984-08-03 1986-02-07 Telemecanique Electrique Dispositif de commande d'une bobine d'electroaimant et appareil electrique de commutation equipe d'un tel dispositif
DE3504034A1 (de) * 1985-02-06 1986-08-07 Siemens AG, 1000 Berlin und 8000 München Schaltung zum erregen der wicklung eines monostabilen relais
DE3701985A1 (de) * 1987-01-23 1988-08-04 Knorr Bremse Ag Vorschaltelektronik fuer ein gleichspannungserregbares geraet

Family Cites Families (4)

* Cited by examiner, † Cited by third party
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FR2099677B1 (fr) * 1970-07-30 1977-08-05 Honeywell Inf Systems Italia
DE2117357A1 (de) * 1971-04-08 1972-10-19 Linde Ag Elektrischer, an eine Gleichspannungsquelle angeschlossener Zeitverzögerungsschalter
DE3071554D1 (en) * 1979-10-24 1986-05-28 Lucas Ind Plc Internal combustion engine spark ignition system
JPS60220911A (ja) * 1984-04-17 1985-11-05 Nissan Motor Co Ltd ソレノイド駆動電流制御装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3144000A1 (de) * 1981-11-05 1983-05-11 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches relais fuer impulsbetrieb
FR2568715A1 (fr) * 1984-08-03 1986-02-07 Telemecanique Electrique Dispositif de commande d'une bobine d'electroaimant et appareil electrique de commutation equipe d'un tel dispositif
DE3504034A1 (de) * 1985-02-06 1986-08-07 Siemens AG, 1000 Berlin und 8000 München Schaltung zum erregen der wicklung eines monostabilen relais
DE3701985A1 (de) * 1987-01-23 1988-08-04 Knorr Bremse Ag Vorschaltelektronik fuer ein gleichspannungserregbares geraet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ELEKTRONIK *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0471891A2 (fr) * 1990-08-21 1992-02-26 Siemens Aktiengesellschaft Circuit pour la commande d'un groupe de relais
EP0471891A3 (en) * 1990-08-21 1992-08-12 Siemens Aktiengesellschaft Circuit arrangement for controlling a group of relays
US5317475A (en) * 1990-08-21 1994-05-31 Siemens Aktiengesellschaft Circuit arrangement for driving a group of relays
EP0562908A1 (fr) * 1992-03-24 1993-09-29 Valeo Electronique Circuit d'alimentation pour relais électromagnétique
FR2689306A1 (fr) * 1992-03-24 1993-10-01 Valeo Electronique Circuit d'alimentation pour relais électromagnétique.
EP0650177A1 (fr) * 1993-09-28 1995-04-26 Siemens Aktiengesellschaft Méthode pour commander des relais arrangés en parallèle
DE4332995C1 (de) * 1993-09-28 1994-10-20 Siemens Ag Verfahren zur Ansteuerung von parallel angeordneten Relais
US5552954A (en) * 1993-09-28 1996-09-03 Siemens Aktiengesellschaft Method for triggering parallel relays and circuit for carrying out the method
DE102007023189A1 (de) * 2007-05-18 2008-11-20 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Schaltungsanordnung zur Stromregelung einer Ventilspule
US8649152B2 (en) 2007-05-18 2014-02-11 Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh Circuit configuration for regulating current in a valve coil
EP2383765B1 (fr) 2010-04-29 2020-01-15 Kissling Elektrotechnik GmbH Relais doté d'une commutation de sécurité intégrée
WO2016045856A1 (fr) * 2014-09-23 2016-03-31 Robert Bosch Gmbh Actionneur électrique à préchauffage
CN105658466A (zh) * 2014-09-23 2016-06-08 罗伯特·博世有限公司 具有预热机构的电促动器
CN105658466B (zh) * 2014-09-23 2017-09-12 罗伯特·博世有限公司 具有预热机构的电促动器
EP4009345A1 (fr) * 2020-12-01 2022-06-08 PTC Rail Services GmbH Agencement de circuits et procédé de fonctionnement optimisé en énergie des systèmes d'entraînement électromagnétique

Also Published As

Publication number Publication date
PT93734A (pt) 1990-11-20
JPH02295016A (ja) 1990-12-05
US5107391A (en) 1992-04-21

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