EP1287539A1 - Dispositif disjoncteur de faible encombrement - Google Patents

Dispositif disjoncteur de faible encombrement

Info

Publication number
EP1287539A1
EP1287539A1 EP01953780A EP01953780A EP1287539A1 EP 1287539 A1 EP1287539 A1 EP 1287539A1 EP 01953780 A EP01953780 A EP 01953780A EP 01953780 A EP01953780 A EP 01953780A EP 1287539 A1 EP1287539 A1 EP 1287539A1
Authority
EP
European Patent Office
Prior art keywords
locking mechanism
housing
spring
ppp
trigger 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.)
Withdrawn
Application number
EP01953780A
Other languages
German (de)
English (en)
Inventor
Stefan Kautz
Markus Geuder
Matthias Marondel
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
Publication of EP1287539A1 publication Critical patent/EP1287539A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/01—Details
    • H01H61/0107—Details making use of shape memory materials
    • 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
    • H01H2001/5877—Electric connections to or between contacts; Terminals with provisions for direct mounting on a battery pole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/01—Details
    • H01H61/0107—Details making use of shape memory materials
    • H01H2061/0115—Shape memory alloy [SMA] actuator formed by coil spring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/01—Details
    • H01H61/0107—Details making use of shape memory materials
    • H01H2061/0122—Two SMA actuators, e.g. one for closing or resetting contacts and one for opening them
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit

Definitions

  • the invention relates to a disconnector device with a small footprint for the load circuit of a vehicle battery with the following features, namely with
  • a contact carrier carrying the movable contact part and switchable between an open position and a closed position and pretensioned into the open position by spring force
  • Such a circuit breaker device emerges from DE 197 01 933 Cl. It has a contact rocker which is rotatably mounted in a housing and carries a movable contact indirectly via a contact spring which acts as a lever arm. A tear spring is provided to reset the contact rocker to the open position.
  • a locking mechanism consists of an actuating arm and a switching pawl, the switching pawl locking the actuating arm on the contact rocker and the actuating arm prestressing the contact rocker in a closed position. As a means for opening the locking mechanism is just as in DE 198 32 573 AI or DE 197 41 919 AI
  • Disconnector switch devices used an electromagnetic system with an armature, which is coupled to the pawl.
  • the magnetic system is excited to open, causing the pawl to unlock the actuating arm and the contact rocker to be opened by the tear spring.
  • the movable contact part located in its open position can only be reset manually to the contact position.
  • the locking mechanism has to be brought back into its starting position ensuring a closed position, for example via a toggle joint that may be present.
  • the object of the present invention is to further develop the disconnector device according to the aforementioned DE-Cl document in such a way that a generally laborious manual reset of the locking mechanism can be dispensed with and remote triggering is made possible. A space-saving structure of the disconnector device should be ensured.
  • the means for opening the locking mechanism contain as at least one trigger element made of a shape-memory alloy, which contracts when heated by the application of a heating current, and in that the locking mechanism has at least one closing position acting on the contact carrier inducing spring element from a form Memory alloy, which expands when heated by applying a heating current.
  • the advantages associated with this design of the disconnector device include to be seen in the fact that the use of the special trigger element as a means for opening the locking mechanism means that it takes up much less space than an electromagnetic system.
  • a triggering element which heats up and contracts when exposed to a heating current, is generally connected to a sensor system which, e.g. this current is applied in the event of a short circuit or a vehicle crash. The element heats up due to the current and thus triggers the opening of the reduction mechanism through its contraction.
  • Appropriate trigger elements are inexpensive to purchase, are light in weight and are therefore not prone to impact. They also require only a small amount of space, so that they can advantageously be used in a disconnector device for the load circuit of a vehicle battery.
  • the contact parts are pressed so strongly against one another that even high currents, in particular as they occur during the starting process of a vehicle, can flow.
  • a disconnector device it can then be ensured that an electromagnetic system can be dispensed with when used on a vehicle battery.
  • the entire isolating switch device is much easier to arrange in a housing which is adapted to a pole terminal of the vehicle battery and which spares the pole terminal itself. The space saving enables additional components to be accommodated in the housing.
  • the locking mechanism can be designed as a toggle clamp. It is advantageous here if the tensioning element consists of a first lever engaging the contact carrier and a second lever mounted in the housing, which are connected via a central knee joint to a toggle lever which, in an approximately extended state, locks the contact carrier in its closed position.
  • Their locking mechanism has a tensioning element which, in its extended position, presses the movable contact part against the fixed contact part, the release element acting on the tensioning element in such a way that the locking element bends out laterally to open the locking mechanism.
  • the release element advantageously engages the tensioning element designed as a toggle lever via an actuating arm, wherein in a special embodiment the actuating arm can also be designed as a return spring for the release element.
  • the release element acts via the actuating arm approximately perpendicular to the extension axis of the knee lever on the middle knee joint and moves this over the dead center when the release element contracts.
  • the actuating arm is formed by a cranked leaf spring, the cranked end of which presses on the knee joint when the trigger element contracts.
  • the at least one spring element is rigidly connected to the housing on one side and engages on the opposite side on a toggle lever of the locking mechanism designed as a toggle lever tensioning mechanism. Such an attack on the spring element enables a safe and quick return to the closed position.
  • the contact carrier can be an elongated contact spring which is clamped on one side in the housing and which bears the movable contact part approximately in the central region of its length and which at its free or movable end engages with the outer end of a first knee joint lever to form a first swivel joint.
  • the trigger element can be controlled by a short-circuit sensor and / or an acceleration sensor.
  • the housing can be arranged on a pole terminal of the vehicle battery.
  • a current sensor can be provided in the housing, which is coupled to an input conductor and applies current to the tripping element when a current threshold is exceeded.
  • An electronic evaluation circuit for controlling the triggering element is expediently arranged in the housing.
  • a NiTi or NiTiCu alloy is selected as the shape memory alloy of the at least one trigger element and / or at least one spring element, which alloy may optionally also contain further components.
  • FIG. 1 shows individual assemblies of an isolating switch device to be designed according to the invention in a perspective illustration
  • FIG. 2 shows a clamping mechanism assembly with a triggering element of FIG. 1
  • FIG. 3 shows a pole terminal assembly according to FIG. 1 in the semi-assembled state
  • FIG. 4 shows a top view of the disconnector device according to FIG. 1
  • FIG. 5 shows parts of the disconnector device according to FIG. 1 in the assembled state, but with the cover open
  • FIG. 6 shows part of the disconnector device according to FIG Installation of a spring element in the open contact state as well
  • FIG. 7 shows the part of the isolating switch device according to FIG. 6 in the closed contact state.
  • corresponding parts are provided with the same reference symbols.
  • disconnector device In the case of the components indicated in the figures, an embodiment of a disconnector device is assumed, as is evident from the DE-Cl document mentioned at the beginning.
  • the disconnector device is usually located on the vehicle battery in the engine or trunk of one
  • the isolating switch device enables particularly space-saving embodiment, the use of at least one spring element according to the invention and at least one trigger element, which advantageously consist of at least one shape memory alloy.
  • Practically all known shape memory alloys come into question for the spring element and / or the triggering element of the disconnector device, and different alloys can also be selected for these two elements.
  • Ti-Ni alloys are particularly suitable.
  • "Materials Science and Engineering" vol. A 202, 1995, pages 148 to 156 show differently composed Ti-Ni and Ti-Ni-Cu alloys. In N Intermetallic ", Vol. 3, 1995, pages 35 to 46 and V ⁇ Scripta METALLURGICA et MATERIALIA'A Vol.
  • Ti-Ni shape memory alloys are described.
  • Other shape-memory alloys are of course also suitable instead of the Ti-Ni alloys.
  • Cu-Al shape-memory alloys are suitable.
  • a corresponding Cu-Zn24Al3 alloy is made of Z. Metallkde. ", Vol. 70, H. 10, 1988, pages 678 to 683.
  • V Scripta Materialia Vol. 34, No. 2, 1996, pages 255 to 260
  • other alloy partners such as Hf in. Can be added to the aforementioned binary or ternary alloys
  • a Ti-Ni shape memory alloy should be selected for the exemplary embodiments explained below.
  • the isolating switch device designated generally T comprises a housing 1, which is composed in particular of plastic and is connected to a pole terminal assembly 2.
  • the housing 1 can be tightly closed from its top with a cover 7 (see FIG. 5).
  • a tensioning mechanism assembly 3, which is to be regarded as a locking mechanism, can be inserted into the opened housing, which with an integrated release element 4 from a shape memory Alloy interacts.
  • an input conductor 5 and an output conductor 6 are inserted into the housing.
  • the output conductor 6 is fastened to the outside of the housing 1.
  • This is L-shaped, a leg 61 being attached to a saw pocket contour in a corresponding pocket on the outside of the housing, while a leg 62 is fixed to the housing by hot stamping.
  • This fixation absorbs the forces of a battery cable screwed to the output conductor 6 via a bolt 63; at the same time the entire housing is stiffened by the L-shaped bend of the output conductor.
  • Fixed on the leg 62 is the fixed contact part 64, which projects through a round passage 15 into the interior of the housing.
  • the bushing 15 for this fixed contact part 64 is sealed with an O-ring 16.
  • the contact part 64 consists, for example, of a round copper part with a plated or welded contact material.
  • the plastic housing 1 has a switching space 11 which is delimited by a base plate and side walls and which accommodates the functional parts of the isolating switch device.
  • a space for receiving a pole terminal 21 is also recessed within the housing by a curved partition wall 12. Since the cover 7 also has a corresponding recess 71 (cf. FIG. 7), the closed and sealed housing of the isolating switch device can be placed on the battery pole of a motor vehicle battery with the pole clamp 21 in such a way that it or a corresponding clamping screw 22 is accessible from the outside remains.
  • the pole clamp 21 interacts with a clamping shoe 23 which is riveted to a base plate 24 made of sheet metal. At the outer edge, this lies with a U-shaped bend 25 on the pole terminal 21, where it is fixed by means of the clamping screw 22.
  • the plastic housing is placed on the base plate 24 and hot stamped, as a result of which the co ⁇ t IV) P 1
  • CD CD rt ⁇ P- op CO O P- ⁇ p- ⁇ rt ⁇ TJ J 1 ⁇ i P ⁇ 1 P- ⁇ rt ⁇ tr O P- O P>
  • CD tr P 0 rt H P- tr Hl to l-i PJ ⁇ . Hl P rt ⁇ -i P tu -j ⁇
  • CD P 1 isi ⁇ vq ⁇ P- P vq Hi O: ⁇ tr P- P- ⁇ -i PO: P CL H 2. o O ⁇ rt PP o ⁇ -i ⁇ P "H ⁇ P ⁇ O: ⁇ Q. 3 rt n co CL ⁇ p. ⁇ ⁇ tr PP p- rt P p-
  • P p P> 1 P- P- P P- PPP Pi PPP vq cn rt ⁇ P- tr Hi P- P P- rt P ⁇ cn cn P ⁇ cn P- P
  • Wire diameter 1.2 mm axial spring length (compressed): 9.6 mm; axial spring length (relaxed): 11.2 mm; Number of turns: 7; Inner diameter: 8.2 mm; Outer diameter: 10.6 mm; Travel: up to 8 mm;
  • Positioning force up to 20 N; Power requirement: 9 A at g: 2 V; Reset time: 5 s;
  • the reset time and the tripping time depend on the size of the heating current applied. It shows that the reset time can be shortened with increasing current.
  • the trigger element made of one of the known shape memory alloys such as, in particular, a Ni or NiTiCu alloy in wire or strip form, as an elongated element between a fixed suspension and the mechanical opening of the Contact parts causing locking mechanism is clamped.
  • the trigger element made of the shape memory alloy are also conceivable.
  • Alternative embodiments are e.g. the DE patent application mentioned at the outset.

Landscapes

  • Fuses (AREA)
  • Materials For Photolithography (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

L'invention concerne un dispositif disjoncteur destiné au circuit de charge d'une batterie de véhicule, qui comprend une pièce de contact mobile (81) et une pièce de contact fixe (64) qui sont reliées à un mécanisme de verrouillage. Pour l'ouverture du mécanisme de verrouillage, on utilise un élément de déclenchement (4) en un alliage à mémoire de forme qui se contracte lorsqu'il se réchauffe. Pour la fermeture du mécanisme de verrouillage, on utilise un élément élastique (110) constitué également d'un alliage à mémoire de forme, qui induit le processus de fermeture par dilatation.
EP01953780A 2000-06-06 2001-05-25 Dispositif disjoncteur de faible encombrement Withdrawn EP1287539A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10027519A DE10027519C2 (de) 2000-06-06 2000-06-06 Trennschaltereinrichtung mit geringem Platzbedarf
DE10027519 2000-06-06
PCT/DE2001/002014 WO2001095359A1 (fr) 2000-06-06 2001-05-25 Dispositif disjoncteur de faible encombrement

Publications (1)

Publication Number Publication Date
EP1287539A1 true EP1287539A1 (fr) 2003-03-05

Family

ID=7644559

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01953780A Withdrawn EP1287539A1 (fr) 2000-06-06 2001-05-25 Dispositif disjoncteur de faible encombrement

Country Status (5)

Country Link
US (1) US6744344B2 (fr)
EP (1) EP1287539A1 (fr)
JP (1) JP2003536214A (fr)
DE (1) DE10027519C2 (fr)
WO (1) WO2001095359A1 (fr)

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Publication number Priority date Publication date Assignee Title
GB2417832B (en) * 2004-09-01 2007-07-18 Blp Components Ltd Switch and connector
DE102004053648A1 (de) 2004-11-03 2006-05-04 Leopold Kostal Gmbh & Co. Kg Batteriestromsensor für ein Kraftfahrzeug
ES2277730B1 (es) * 2005-04-04 2008-06-01 Pronutec, S.A. Seccionador de baja tension con acometida de socorro.
DE102005057117A1 (de) * 2005-11-30 2007-06-14 Siemens Ag Vorrichtung zum Erfassen einer elektrischen Größe eines Akkumulators und Verfahren zur Herstellung derselbigen
US7852190B1 (en) * 2007-04-17 2010-12-14 Rockwell Collins, Inc. Shape memory alloy (SMA) actuation mechanism for electrical switching device
US7728704B2 (en) * 2007-06-07 2010-06-01 Trombetta, Llc Method for reducing continuous charge
US8934264B2 (en) * 2012-05-09 2015-01-13 Robert Bosch Gmbh Inverted base battery disconnect unit
CA2969073C (fr) * 2014-12-19 2019-09-03 Alpes Lasers Sa Laser a cascade quantique optimise pour un montage tete-beche sur l'embase
DE102015001439B4 (de) 2015-02-09 2016-09-15 Solvo GmbH Aktoranordnung mit Formgedächtnisstellern und Betriebsverfahren
DE102016008526B3 (de) * 2016-07-15 2017-11-16 Solvo GmbH Aktoranordnung mit Formgedächtnisstellern und Betriebsverfahren

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US3725835A (en) * 1970-07-20 1973-04-03 J Hopkins Memory material actuator devices
US4544988A (en) * 1983-10-27 1985-10-01 Armada Corporation Bistable shape memory effect thermal transducers
GB2182747B (en) * 1985-11-07 1989-10-04 Gen Electric Plc Actuator
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US4887430A (en) * 1988-12-21 1989-12-19 Eaton Corporation Bistable SME actuator with retainer
JPH03182026A (ja) * 1989-12-08 1991-08-08 Sharp Corp スイッチ機構
DE4206162A1 (de) * 1992-02-28 1993-09-02 Rainer Dipl Phys Berthold Fernantrieb fuer schalter
US5612659A (en) * 1994-08-08 1997-03-18 Quicksilver Engineering Battery protecting circuit breaker
DE19525475B4 (de) * 1995-02-06 2005-10-13 Bayerische Motoren Werke Ag Sicherungsvorrichtung für eine Stromleitung in Fahrzeugen
US5684448A (en) 1995-05-04 1997-11-04 Sarcos, Inc. Shape memory actuated switching device
DE19701933C1 (de) * 1997-01-21 1998-02-26 Siemens Ag Lasttrennschalter, insbesondere für den Laststromkreis einer Fahrzeugbatterie
CA2263142A1 (fr) * 1997-06-12 1998-12-17 Jon Skekloff Module de commande d'appareils adaptatifs comprenant un relais de commutation
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Also Published As

Publication number Publication date
DE10027519A1 (de) 2002-01-03
WO2001095359A1 (fr) 2001-12-13
US6744344B2 (en) 2004-06-01
JP2003536214A (ja) 2003-12-02
US20040004530A1 (en) 2004-01-08
DE10027519C2 (de) 2002-04-25

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