EP2034498A1 - Appareil de commutation électromagnétique - Google Patents

Appareil de commutation électromagnétique Download PDF

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Publication number
EP2034498A1
EP2034498A1 EP07017331A EP07017331A EP2034498A1 EP 2034498 A1 EP2034498 A1 EP 2034498A1 EP 07017331 A EP07017331 A EP 07017331A EP 07017331 A EP07017331 A EP 07017331A EP 2034498 A1 EP2034498 A1 EP 2034498A1
Authority
EP
European Patent Office
Prior art keywords
switching device
busbar
current sensor
switching
switching element
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
EP07017331A
Other languages
German (de)
English (en)
Other versions
EP2034498B1 (fr
Inventor
Josef Burger
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 EP20070017331 priority Critical patent/EP2034498B1/fr
Publication of EP2034498A1 publication Critical patent/EP2034498A1/fr
Application granted granted Critical
Publication of EP2034498B1 publication Critical patent/EP2034498B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/14—Terminal arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not entering the winding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/029—Composite material comprising conducting material dispersed in an elastic support or binding material
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts

Definitions

  • the invention relates to an electromagnetic switching device with a drive coil, a yoke, an armature and an interrupted by a switching element busbar, wherein the drive coil, the yoke, the armature and the switching element are coupled together such that the switching element is actuated by energizing the drive coil.
  • Such a switching device is for example from the DE 103 31 339 A1 known.
  • the yoke and the armature of this switching device contain pulme magnetic material. By using this material, an optimal design of the magnetic circuit should be possible.
  • the powder-magnetic material should provide cost-effective production options. Another advantage is given in the good thermal coupling between different parts of the switching device.
  • the invention has for its object to further improve an electromagnetic switching device, in particular with regard to the production options over the prior art.
  • This switching device comprises a yoke, an armature which is movable relative to the yoke, and a switching element which is mechanically coupled to the armature or formed integrally with the armature and which enables interruption or production of a current flow through a busbar.
  • the actuation of the switching element is carried out by a bestrombare coil.
  • the busbar is made in a particularly rational manner from a metal-plastic hybrid material.
  • a metal-plastic hybrid material for example a pulverulent metallic material mixed with a plastics material, for producing a busbar of a switching device on the one hand offers very far-reaching possibilities of shaping.
  • the electrical properties of a metal-plastic hybrid material are suitable for use as a busbar in a switching device.
  • the processing of the metal-plastic hybrid material is preferably carried out by injection molding.
  • a material containing metallic particles as well as a polymer material is in principle for example from WO 01/98006 A2 known.
  • the metal-plastic hybrid material In order to give the metal-plastic hybrid material a stress-resistant strength, it is sufficient to heat the material as far as the plastic portion crosslinks. A sintering process between the metal particles, however, is not required. The manufacturing process can thus take place at temperatures that are common in plastic injection molding. This has the particular advantage that in the busbar, a component can be injected, which is relatively low thermal load compared to purely metallic components. Such a component is according to a preferred embodiment, a current sensor.
  • the current sensor integrated in the busbar is preferably linked to an evaluation unit which is likewise arranged in the switching device.
  • the evaluation unit in turn is circuit-coupled to the coil, so that the possibility exists of automatically receiving the switching element in dependence on the current measured by means of the current sensor actuate.
  • a commonly provided in the prior art electromagnetic switching devices auxiliary switch can be omitted.
  • the switching device according to an advantageous development of a magnetic field sensor, which is also linked to the evaluation, whereby a logical link with the current sensor is made.
  • the sensors of the switching device that is, the current sensor and optionally also the magnetic field sensor is in a preferred embodiment in cooperation with the evaluation also suitable to consider the rate of change of measurements. For example, to protect the switching device from overloading, a switching threshold is lowered when a very high gradient of the current increase is detected. Conversely, it is possible to temporarily tolerate a threshold overshoot, if the algorithm according to which the evaluation unit operates with sufficient probability predicts a rapid return of the monitored variable in the allowable range.
  • the evaluation unit is preferably designed for wireless signal transmission. This concerns both the communication with external devices, that is to say transmitting and / or receiving devices outside the switching device, as well as the data transfer within the switching device, in particular the transmission of measured values from the current sensor, possibly also from the magnetic field sensor, to the evaluation unit.
  • the power supply of the current sensor is preferably carried out exclusively via the busbar, for example by means of inductive coupling.
  • the current sensor thus does not require any leads leading to the outside.
  • the housing of the switching device is made according to a preferred development of a plastic-bonded magnetic material, which differs from the hybrid material of the busbar in particular in that it is electrically non-conductive.
  • the yoke of the switching device is preferably molded directly into the magnetic material replacing a conventional plastic housing.
  • the advantage of the invention is in particular that a processable by injection molding metal-plastic hybrid material allows the extremely efficient production of a busbar of an electromagnetic switching device, in particular circuit breaker, by means of two-component injection molding.
  • FIG. 1 An in FIG. 1 simplified illustrated electromagnetic switching device 1, namely a circuit breaker, has in a housing 2, a yoke 3, an energizable coil 4, also referred to as a drive coil, and a displaceably mounted armature 5 as essential functional components.
  • a yoke 3 an energizable coil 4 also referred to as a drive coil
  • armature 5 a displaceably mounted armature 5 as essential functional components.
  • 4 5 is on the DE 103 31 339 A1 directed.
  • the armature 5 is fixedly connected to a switching element 6, which is intended to interrupt or produce the flow of current through a busbar 7.
  • the armature 5 together with switching bridge 8 is pulled to the yoke 3, so in that an electrical connection between contact pieces 12 on the switching bridge 8 and contact pieces 13 is produced on a respective section 14, 15 of the busbar 7.
  • Each section 14, 15 of the busbar 7 is made including the contact pieces 13 by injection molding of an electrically conductive metal-plastic hybrid material.
  • the switching bridge 8 with the integrally formed thereon contact pieces 12 made of a metal-plastic hybrid material.
  • the hybrid material is composed of a polymer material and a metal powder uniformly mixed therewith.
  • the material from which the busbar 7 is made identical to the material of the switching bridge 8.
  • the sections 14, 15 of the busbar 7 protrude on in each case one end face 16, 17 out of the partially perforated housing 2 and are provided for connecting electrical conductors, not shown.
  • a current sensor 18 also referred to as a current flow sensor, is arranged in the section 14. This current sensor is injected into the busbar 7 in a two-component injection molding process. For the production of a plastic injection molding machine is usable. Due to the direct integration of the current sensor 18 in the busbar 7 a particularly high measurement accuracy can be achieved.
  • the embedded in the busbar 2 current sensor 18 is shown enlarged. Thereafter, the current sensor 18 has a sensor element 19, which performs the actual current measurement, a power supply module 20, a data processing unit 21, and a transmission unit 22. Deviating from the simplified representation of FIG. 2 For example, the current sensor 18 may be enveloped by the metal-plastic hybrid material of the busbar 7.
  • the power supply module 20 draws all the power required to operate the current sensor 18 from the current flowing through the bus bar 7. In this case, it may be provided that current flowing in the busbar 7, in the extreme case the entire current flowing in the busbar 7, is conducted through the current sensor 18. Alternatively, an inductive coupling between the busbar 7 and the current sensor 18 can be realized.
  • the data processing unit 21 preferably converts the signal supplied by the sensor element 18 into a digital signal and forwards it to the transmitting unit 22. Instead of an active emission of a signal by the current sensor 18, it is also possible to provide only a contactless reading of the current sensor 18. In this case, the current sensor 18 serves as a transponder. This technology of wireless signal transmission over short distances is also referred to as RFID (radio frequency identification). Regarding the generation of electrical voltage is in addition to the DE 198 34 672 Cl which discloses a vibrating element-operated electromagnetic voltage generator.
  • the transmitting unit 22 transmits the signal generated by the current sensor 18 to a housing 2, in FIG. 1
  • the current sensor 18 can send a signal to the evaluation unit 23, which triggers an opening of the switching element 6 in order to avoid overloading the switching device 1 and / or a device connected thereto.
  • this signal can be used as a replacement for the auxiliary switches commonly used with circuit breakers.
  • the evaluation unit 23 communicates wirelessly with a magnetic field sensor 24, also referred to as a magnetic flux sensor.
  • the magnetic field sensor 24 is, directly adjacent to the coil 4, disposed on the yoke 3 and surrounded together with the yoke 3 by a potting compound 25, which also serves to dissipate heat.
  • Possibility to integrate a flow sensor in a switching device is on the EP 1 101 233 B1 directed.
  • the magnetic field sensor 24, in cooperation with the evaluation unit 23, allows regulation of the current flowing through the coil 4. Both the magnetic field sensor 24 and the current sensor 18 offer extensive diagnostic options.
  • the evaluation unit 23 preferably has a bidirectionally usable radio communication module (not shown).
  • the magnetic material is directly connected to the housing 2 or at least partially forms the housing 2, wherein the evaluation unit 23 is injected as an insert into the magnetic material.
  • the magnetic material forming the housing 2 which is also made of powdery starting materials, magnetic, but not electrically conductive.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
EP20070017331 2007-09-04 2007-09-04 Appareil de commutation électromagnétique Not-in-force EP2034498B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20070017331 EP2034498B1 (fr) 2007-09-04 2007-09-04 Appareil de commutation électromagnétique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20070017331 EP2034498B1 (fr) 2007-09-04 2007-09-04 Appareil de commutation électromagnétique

Publications (2)

Publication Number Publication Date
EP2034498A1 true EP2034498A1 (fr) 2009-03-11
EP2034498B1 EP2034498B1 (fr) 2013-11-13

Family

ID=38920705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070017331 Not-in-force EP2034498B1 (fr) 2007-09-04 2007-09-04 Appareil de commutation électromagnétique

Country Status (1)

Country Link
EP (1) EP2034498B1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012219075A1 (de) * 2012-09-25 2014-03-27 Tyco Electronics Amp Gmbh Hochstromfestes Relais
CN103943385A (zh) * 2014-04-04 2014-07-23 环宇集团有限公司 一种自动转换开关电器的旁通回路
EP2355638A3 (fr) * 2010-02-02 2015-09-02 Hamilton Sundstrand Corporation Ensemble formant barre omnibus
DE102017204949A1 (de) * 2017-03-23 2018-09-27 SUMIDA Components & Modules GmbH Induktives Bauelement und Verfahren zum Herstellen eines induktiven Bauelements

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000068963A1 (fr) 1999-05-07 2000-11-16 Tyco Electronics Logistics Ag Relais electromagnetique et son procede de fabrication
WO2001086682A2 (fr) 2000-05-11 2001-11-15 Moeller Gebäudeautomation KG Interrupteur electromecanique commande a distance
WO2001098006A2 (fr) 2000-06-20 2001-12-27 Rockwell Technologies, Llc Procede de renforcement pour comprimes crus fabriques a partir d'une poudre metallique
EP1101233B1 (fr) * 1998-07-27 2002-02-20 Siemens Aktiengesellschaft Appareil de commutation comportant une partie inferieure de boitier comme element constitutif, et procede de production correspondant
DE10331339A1 (de) 2003-07-10 2005-02-03 Siemens Ag Elektromagnetisches Schaltgerät
US20060138646A1 (en) 2001-02-15 2006-06-29 Thomas Aisenbrey Low cost electromechanical devices manufactured from conductively doped resin-based materials
EP1770740A2 (fr) * 2005-09-30 2007-04-04 Rockwell Automation Technologies, Inc. Procédé et système de detection du courant d'un contacteur.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1101233B1 (fr) * 1998-07-27 2002-02-20 Siemens Aktiengesellschaft Appareil de commutation comportant une partie inferieure de boitier comme element constitutif, et procede de production correspondant
WO2000068963A1 (fr) 1999-05-07 2000-11-16 Tyco Electronics Logistics Ag Relais electromagnetique et son procede de fabrication
WO2001086682A2 (fr) 2000-05-11 2001-11-15 Moeller Gebäudeautomation KG Interrupteur electromecanique commande a distance
WO2001098006A2 (fr) 2000-06-20 2001-12-27 Rockwell Technologies, Llc Procede de renforcement pour comprimes crus fabriques a partir d'une poudre metallique
US20060138646A1 (en) 2001-02-15 2006-06-29 Thomas Aisenbrey Low cost electromechanical devices manufactured from conductively doped resin-based materials
DE10331339A1 (de) 2003-07-10 2005-02-03 Siemens Ag Elektromagnetisches Schaltgerät
EP1770740A2 (fr) * 2005-09-30 2007-04-04 Rockwell Automation Technologies, Inc. Procédé et système de detection du courant d'un contacteur.

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2355638A3 (fr) * 2010-02-02 2015-09-02 Hamilton Sundstrand Corporation Ensemble formant barre omnibus
DE102012219075A1 (de) * 2012-09-25 2014-03-27 Tyco Electronics Amp Gmbh Hochstromfestes Relais
DE102012219075B4 (de) * 2012-09-25 2014-04-10 Tyco Electronics Amp Gmbh Hochstromfestes Relais
CN103943385A (zh) * 2014-04-04 2014-07-23 环宇集团有限公司 一种自动转换开关电器的旁通回路
CN103943385B (zh) * 2014-04-04 2015-11-25 环宇集团有限公司 一种自动转换开关电器的旁通回路
DE102017204949A1 (de) * 2017-03-23 2018-09-27 SUMIDA Components & Modules GmbH Induktives Bauelement und Verfahren zum Herstellen eines induktiven Bauelements
CN110603615A (zh) * 2017-03-23 2019-12-20 胜美达集团有限公司 电感部件和制造电感部件的方法
US11955265B2 (en) 2017-03-23 2024-04-09 SUMIDA Components & Modules GmbH Inductive component

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