EP0294794A2 - Procédé pour ouvrir les contacts soudés d'un relais ainsi que circuit pour son exécution - Google Patents

Procédé pour ouvrir les contacts soudés d'un relais ainsi que circuit pour son exécution Download PDF

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Publication number
EP0294794A2
EP0294794A2 EP19880109154 EP88109154A EP0294794A2 EP 0294794 A2 EP0294794 A2 EP 0294794A2 EP 19880109154 EP19880109154 EP 19880109154 EP 88109154 A EP88109154 A EP 88109154A EP 0294794 A2 EP0294794 A2 EP 0294794A2
Authority
EP
European Patent Office
Prior art keywords
relay
voltage
contacts
winding
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
EP19880109154
Other languages
German (de)
English (en)
Other versions
EP0294794A3 (en
EP0294794B1 (fr
Inventor
Norbert Nickolai
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
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0294794A2 publication Critical patent/EP0294794A2/fr
Publication of EP0294794A3 publication Critical patent/EP0294794A3/de
Application granted granted Critical
Publication of EP0294794B1 publication Critical patent/EP0294794B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/001—Means for preventing or breaking contact-welding
    • 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
    • H01H47/002—Monitoring or fail-safe circuits
    • 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
    • H01H47/002—Monitoring or fail-safe circuits
    • H01H2047/003—Detecting welded contacts and applying weld break pulses to coil

Definitions

  • the invention relates to a method for releasing the contacts of an adhesive relay, one contact of which is stationary and the other contact of which is arranged on the ferromagnetic relay armature, which is attracted by its contact by applying an electrical voltage to the winding of the relay coil toward the stationary contact, and which in de-energized state of the relay coil drops again when the relay is intact, whereby the two contacts are separated again.
  • This object is achieved in that a sticking of the relay contacts is determined and that an alternating voltage or a pulsating direct voltage is applied to the winding of the relay coil in the case of relay contacts sticking together.
  • an alternating voltage or a pulsating direct voltage is excited to the winding of the relay coil with a frequency corresponding to the natural frequency of the mechanical relay structure. This causes the relay structure to vibrate naturally.
  • the AC voltage or the pulsating DC voltage is advantageously only applied to the winding of the relay coil for a specific, predetermined period of time.
  • the course of the load signal to be switched by the relay is compared with the course of the control signal of the relay in order to determine the sticking together of the relay contacts. If the course of the load signal does not follow the course of the control signal of the relay, taking into account the switching time of the relay, this means that the relay contacts are glued together.
  • a circuit arrangement for carrying out the method advantageously comprises a comparison circuit which is driven at its one input by the control signal of the relay and connected at its other input to the load circuit to be switched by the relay, the output signal of which controls a switching device by means of which the output signal of a replaces the control signal of the relay AC voltage or a pulsating DC voltage generating generator can be applied to the relay winding or to the control input of a relay driver switching the electrical current through the relay winding.
  • a time circuit is preferably provided between the output of the comparison circuit and the control input of the switching device, which output signal of the comparison circuit indicating an adhesive relay contacts only a certain, predetermined time to the Control input of the switching device switches through.
  • the circuit arrangement according to the invention has a comparison circuit 10, which is driven at its one input 12 by the control signal of the relay 14 shown in dashed lines in the figure and is connected with its other input 16 to the load circuit 18 to be switched by the relay 14.
  • sticking together of the relay contacts 20 and 22 is determined by comparing the course of the load signal to be switched by the relay 14 with the course of the control signal of the relay 14. If the load signal to be switched by the relay 14 does not follow the trigger signal of the relay, taking into account the switching time of the relay 14, this means that the two relay contacts 20 and 22 are glued together.
  • the output 24 of the comparison circuit 10 is connected to the input 26 of a time circuit 28.
  • the timer 28 is intended to prevent the relay armature 34 from shaking continuously if the connection layer between the relay contacts 20 and 22 does not break even when the relay armature 34 is shaken several times.
  • the switching device 32 when the relay 14 is functioning, switches the control signal of the relay 14 present at its one input 36 to the control input 38 of the relay driver 40, it connects, in the event that the relay contacts 20 and 22 are glued together, the output 42 of an AC voltage generator 44 with the control input 38 of the relay driver 40.
  • the alternating voltage generated by the alternating voltage generator 44 makes the relay driver 40 alternately conductive and blocking.
  • one of the output voltage of the change is applied to the winding of the relay coil 46 voltage generator 44 corresponding AC voltage applied.
  • the relay coil generates an alternating magnetic field, which exerts a shaking force on the relay armature 34.
  • the relay armature 34 is preferably excited with the natural frequency of the mechanical structure of the relay 14 in order to set the relay in natural oscillations.

Landscapes

  • Relay Circuits (AREA)
EP88109154A 1987-06-10 1988-06-08 Procédé pour ouvrir les contacts soudés d'un relais ainsi que circuit pour son exécution Expired - Lifetime EP0294794B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873719298 DE3719298A1 (de) 1987-06-10 1987-06-10 Verfahren zum loesen der kontakte eines klebenden relais sowie schaltungsanordnung zur durchfuehrung des verfahrens
DE3719298 1987-06-10

Publications (3)

Publication Number Publication Date
EP0294794A2 true EP0294794A2 (fr) 1988-12-14
EP0294794A3 EP0294794A3 (en) 1990-08-29
EP0294794B1 EP0294794B1 (fr) 1993-08-11

Family

ID=6329387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88109154A Expired - Lifetime EP0294794B1 (fr) 1987-06-10 1988-06-08 Procédé pour ouvrir les contacts soudés d'un relais ainsi que circuit pour son exécution

Country Status (4)

Country Link
US (1) US4914315A (fr)
EP (1) EP0294794B1 (fr)
DE (2) DE3719298A1 (fr)
ES (1) ES2043728T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0573771A1 (fr) * 1992-06-10 1993-12-15 Gmi Holdings Inc Dispositif de surveillance de l'état d'un contact
FR2959593A1 (fr) * 2010-04-30 2011-11-04 Schneider Electric Ind Sas Appareil de commutation electromagnetique de type contacteur et procede d'ouverture d'un tel appareil.
WO2023180582A1 (fr) * 2022-03-25 2023-09-28 Webasto SE Circuit de puissance et procédé pour augmenter les forces de décollement lors de la commutation d'un relais, relais, dispositif de charge et unité de commande

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01186182A (ja) * 1988-01-19 1989-07-25 Fanuc Ltd サーボモータの制御装置
JP2527041B2 (ja) * 1989-07-31 1996-08-21 日本電気株式会社 電源回路
JP2669905B2 (ja) * 1989-09-01 1997-10-29 ファナック株式会社 リレーの溶着検出方法
JP2879807B2 (ja) * 1992-07-30 1999-04-05 矢崎総業株式会社 スイッチの腐食防止回路
US5363669A (en) * 1992-11-18 1994-11-15 Whirlpool Corporation Defrost cycle controller
DE19632347A1 (de) * 1996-08-10 1998-02-12 Kaco Elektrotechnik Gmbh Schalter, insbesondere Relais
JP3724207B2 (ja) * 1997-09-08 2005-12-07 松下電器産業株式会社 継電器の制御回路
DE19930521A1 (de) * 1999-07-05 2001-01-11 Volkswagen Ag Relaisbauteil
JP2002175750A (ja) * 2000-12-08 2002-06-21 Toyota Motor Corp リレーの溶着検出装置
US7111544B2 (en) 2001-08-30 2006-09-26 Krauss-Maffei Wegmann Gmbh & Co. Kg Artillery gun with a heavy weapon arranged on a support vehicle
DE10300828C5 (de) † 2003-01-10 2009-06-10 Dorma Gmbh + Co. Kg Ansteuerung für einen mit Gleichstrom betriebenen Türöffner und Verfahren zur Ansteuerung eines mit Gleichstrom betriebenen Türöffners
JP3625474B1 (ja) * 2004-04-05 2005-03-02 富士通テン株式会社 接点腐食防止回路
JP4599260B2 (ja) * 2004-09-28 2010-12-15 プライムアースＥｖエナジー株式会社 電源制御装置、電源制御方法、プログラム及び記録媒体
US7298148B2 (en) * 2006-03-02 2007-11-20 Emerson Electric Co. Relay controller
US20080055024A1 (en) * 2006-08-31 2008-03-06 Motorola, Inc. System and method for protection of unplanned state changes of a magnetic latching relay
US20100157502A1 (en) * 2008-12-18 2010-06-24 Caterpillar Inc. System for decoupling a power source from a load
WO2010129071A1 (fr) * 2009-05-08 2010-11-11 Computer Performance, Inc. Commutation et détection de courant isolées en ca avec un nombre réduit de composants
WO2011154876A1 (fr) * 2010-06-08 2011-12-15 Koninklijke Philips Electronics N.V. Système d'éclairage à sécurité positive
DE102012222129A1 (de) * 2012-12-04 2014-06-05 Robert Bosch Gmbh Verfahren zum Betrieb eines Ansteuerkreises eines elektromagnetischen Schalters
CN104850043A (zh) * 2015-04-27 2015-08-19 浙江恒自电力自动化设备有限公司 微机保护测控装置
CN107275157B (zh) * 2017-07-24 2020-05-26 浙江英洛华新能源科技有限公司 一种继电器运动部件检测电路及具有该电路的继电器
CN113223895B (zh) * 2020-01-21 2022-08-12 株洲中车时代电气股份有限公司 一种继电器的输出安全控制电路
DE102020007452B4 (de) 2020-12-07 2023-06-22 Daimler Truck AG Verfahren zum Betreiben einer Schalteinrichtung eines elektrischen Netzes, sowie Schalteinrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1158869A (fr) * 1956-09-14 1958-06-20 Trindel Perfectionnements apportés aux contacteurs électriques
DE1123384B (de) * 1959-12-01 1962-02-08 Siemens Elektrogeraete Gmbh Aus mehreren Kontakten bestehende Kontakteinrichtung fuer Schalt- und Regelvorrichtungen fuer elektrische Waermegeraete
US3118091A (en) * 1959-12-10 1964-01-14 Honeywell Regulator Co Control apparatus
FR2565430A1 (fr) * 1984-06-04 1985-12-06 Shinko Electric Co Ltd Circuit detectant une panne de relais

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3418609A (en) * 1967-02-28 1968-12-24 United Carr Inc Square obturator
DE1928371A1 (de) * 1969-06-04 1971-02-04 Hartmann & Braun Ag Schaltungsanordnung zum Betreiben von Gleichstromrelais an Wechselspannung
US3958198A (en) * 1973-11-19 1976-05-18 International Standard Electric Corporation Magneto system including a tiltable u-shaped armature
US4254391A (en) * 1979-09-17 1981-03-03 Fasco Industries, Inc. Split armature relay
DE3239840C2 (de) * 1982-10-27 1986-11-20 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zum Betätigen elektromagnetischer Schaltgeräte
DE3333833A1 (de) * 1983-09-20 1985-04-04 Brown, Boveri & Cie Ag, 6800 Mannheim Schaltungsanordnung zum gleichstrombetrieb fuer schuetze
US4645886A (en) * 1984-11-09 1987-02-24 Cuisinarts, Inc. Switch for automatically providing a safety function when its contacts are fused together in the "ON" position
JPS632219A (ja) * 1986-06-20 1988-01-07 株式会社東芝 リレ−駆動回路

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1158869A (fr) * 1956-09-14 1958-06-20 Trindel Perfectionnements apportés aux contacteurs électriques
DE1123384B (de) * 1959-12-01 1962-02-08 Siemens Elektrogeraete Gmbh Aus mehreren Kontakten bestehende Kontakteinrichtung fuer Schalt- und Regelvorrichtungen fuer elektrische Waermegeraete
US3118091A (en) * 1959-12-10 1964-01-14 Honeywell Regulator Co Control apparatus
FR2565430A1 (fr) * 1984-06-04 1985-12-06 Shinko Electric Co Ltd Circuit detectant une panne de relais

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0573771A1 (fr) * 1992-06-10 1993-12-15 Gmi Holdings Inc Dispositif de surveillance de l'état d'un contact
US5455733A (en) * 1992-06-10 1995-10-03 Gmi Holdings, Inc. Contact status monitor
FR2959593A1 (fr) * 2010-04-30 2011-11-04 Schneider Electric Ind Sas Appareil de commutation electromagnetique de type contacteur et procede d'ouverture d'un tel appareil.
WO2023180582A1 (fr) * 2022-03-25 2023-09-28 Webasto SE Circuit de puissance et procédé pour augmenter les forces de décollement lors de la commutation d'un relais, relais, dispositif de charge et unité de commande

Also Published As

Publication number Publication date
ES2043728T3 (es) 1994-01-01
EP0294794A3 (en) 1990-08-29
EP0294794B1 (fr) 1993-08-11
DE3719298C2 (fr) 1991-02-07
US4914315A (en) 1990-04-03
DE3883086D1 (de) 1993-09-16
DE3719298A1 (de) 1988-12-22

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