EP0928492B1 - Dispositif pour eviter les phenomenes de surchauffe dans des appareils electriques - Google Patents

Dispositif pour eviter les phenomenes de surchauffe dans des appareils electriques Download PDF

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Publication number
EP0928492B1
EP0928492B1 EP97909150A EP97909150A EP0928492B1 EP 0928492 B1 EP0928492 B1 EP 0928492B1 EP 97909150 A EP97909150 A EP 97909150A EP 97909150 A EP97909150 A EP 97909150A EP 0928492 B1 EP0928492 B1 EP 0928492B1
Authority
EP
European Patent Office
Prior art keywords
thermal fuse
ptc thermistor
electrical device
contact
plug
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.)
Expired - Lifetime
Application number
EP97909150A
Other languages
German (de)
English (en)
Other versions
EP0928492A1 (fr
Inventor
Bernd Gruhn
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.)
TDK Electronics AG
Original Assignee
Epcos 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 Epcos AG filed Critical Epcos AG
Publication of EP0928492A1 publication Critical patent/EP0928492A1/fr
Application granted granted Critical
Publication of EP0928492B1 publication Critical patent/EP0928492B1/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
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/002—Structural combination of a time delay electrothermal relay with an electrothermal protective relay, e.g. a start relay
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/048—Fuse resistors
    • H01H2085/0483—Fuse resistors with temperature dependent resistor, e.g. thermistor

Definitions

  • the invention relates to an electrical device with a Device to protect them from overheating according to the Preamble of claim 1.
  • the object of the invention is therefore electrical devices Protect from overheating so that even the risk that local smoldering fires can occur, no longer exists.
  • this object is characterized by the features in Claim 1 solved.
  • the inventive solution has a particular advantage in that existing electrical equipment is only marginally must be changed so that a thermal fuse, according to the invention in the immediate vicinity of a critical element is to be arranged can. In this way, there are existing electrical devices according to the invention with a thermal fuse can be retrofitted.
  • a thermal fuse in the immediate vicinity Proximity of the critical element in this case in the immediate vicinity Proximity to the PTC thermistor, is in danger overheating an immediate thermal response Secured fuse and thus one according to the invention Equipped or retrofitted electrical equipment absolutely protected against overheating.
  • the thermal fuse is U-shaped or V-shaped, is in the arrangement and placement of a thermal Fuse inside the housing of an electrical Device, for example with an engine starting device PTC thermistor, thus the apex of the U- or V-shaped Backup in the immediate vicinity of the critical Elements, i.e. of the PTC thermistor.
  • thermal fuse When using the according to the invention advantageously specially designed thermal fuse and its arrangement in the immediate vicinity of the element to be monitored, for example a PTC thermistor, is therefore due to the low Distance between the thermal fuse and the A critical element to be protected from overheating thermal fuse particularly quickly.
  • the heat source in the above example the PTC thermistor Engine start device, can no longer heat up, goes out an emerging smoldering fire because of lining the housing surrounding the electrical device or the entire housing with self-extinguishing Plastic immediately. This is also a spreading one Smoldering is prevented absolutely safely.
  • the engine starting device is a PTC thermistor 3 in a housing 1 held by brackets 2a and 2b. On opposite sides of the PTC thermistor 3 are spring contacts 5a and 5b on the PTC, via which current is supplied becomes.
  • the spring contacts 5a and 5b are with connecting parts 4a and 4b connected conductively, the extensions 4a 'and 4b' with schematically indicated power supply plug contacts 7a or 7b are connected.
  • the extension 4b 'of Connection part 4b to one designated by reference numeral 6 Part separated and thus interrupted.
  • a preferred embodiment of the thermal fuse 8 in Fig.2 has the shape of the capital letter U, and their in Fig.2 downward apex 83 is as close as possible as close as possible to the contact conductor 3.
  • the thermal fuse 8 is made of a low melting Made of material whose melting point is selected that it is under a temperature critical for the PTC thermistor 3 lies. This ensures that the PTC thermistor 3 or the engine starting device in which the PTC thermistor 3 the maximum permissible temperature is not is exceeded.
  • FIG. 3 shows a top view corresponding to FIG. 2, which also compared to the top view in Fig.1 Is rotated 90 °.
  • Figure 4 is a plan view of a 6-arm spring contact 5b along a line IV-IV in 3 in the direction of the connecting part 4b and its extension 4b 'reproduced.
  • thermal protection 8 'approximately V-shaped the apex or Turn point 83 'of the V-shaped thermal fuse 8' again is arranged in the immediate vicinity of the PTC thermistor 3.
  • Figure 4 Device has the extension 4b 'at its Plug contact 7b adjacent end of the separation point 6 a Circular or V-shaped indentation 41b '.
  • the opposite edge area of the separation point 6 is preferred Complementary to the recess 41b 'executed.
  • FIGS. 3 and 4 is a modified further development of a thermal fuse 8 'with its angled extension 81' on the left the extension 4b 'and with its other end 82' between the spring contact 5b and the connecting part 4b by means of a 3 by a dashed line and in FIG. 4 by a Point indicated rivets 10 attached.
  • the apex or reversal point 83 'of the V-shaped thermal fuse 8' can also be arranged between two arms 5b 1 and 5b 2 of the 6-arm spring contact 5b. In this way, the distance between the thermistor 3 to be protected against overheating and the thermal fuse 8 'can be kept particularly small.
  • the rivet When retrofitting with the thermal fuse 8 'according to 3 and 4, on the other hand, the rivet would have to be drilled out by means of which the 6-armed spring contact 5b on the connecting part 4b is attached. After insertion of the extension 82 'of the thermal Fuse 8 'between the connecting part 4b and the spring contact 5b are the connecting part by means of a new rivet 10 4b, the extension 82 'of the thermal fuse 8' and spring contact 5b to be firmly connected.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Fuses (AREA)
  • Thermistors And Varistors (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Generators And Motors (AREA)
  • Thermally Actuated Switches (AREA)
  • Amplifiers (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Motor And Converter Starters (AREA)

Claims (5)

  1. Dispositif électrique ayant un dispositif destiné à le protéger de tout phénomène de surchauffe par un fusible (8, 8') thermique qui est prévu à l'intérieur d'un corps (1) du dispositif électrique à protéger d'un phénomène de surchauffe, dans lequel le fusible (8, 8') thermique est prévu à proximité immédiate d'un élément (3) critique du dispositif électrique et dans lequel le fusible (8, 8') thermique est en un métal à bas point de fusion,
       caractérisé
       en ce que le fusible (8, 8') thermique est en forme de U ou de V et est disposé de manière que son sommet (83, 83') se trouve à proximité immédiate de l'élément (3) critique.
  2. Dispositif électrique suivant la revendication 1,
       caractérisé
       en ce que l'élément critique est un posistor (3).
  3. Dispositif électrique suivant la revendication 1 ou 2,
       caractérisé
       en ce que le corps (1) qui entoure le dispositif électrique est en une matière plastique auto-extinctible et/ou en ce que le corps (1) est revêtu d'une matière plastique auto-extinctible.
  4. Utilisation d'un dispositif électrique suivant l'une des revendications 1 à 3, dans un dispositif de démarrage de moteur à posistor, dans lequel un prolongement (4b') relié de manière conductrice de l'électricité à un contact (7b) à enfichage comporte un point (6) de séparation à proximité immédiate du contact (7b) à enfichage, et des extrémités (81, 82) coudées du fusible (8) thermique en forme de U sont fixées sur des bords opposés du point (6) de séparation de sorte que son sommet (83) arrive très près du posistor (3).
  5. Utilisation d'un dispositif électrique suivant l'une des revendications 1 à 3, dans un dispositif de démarrage de moteur à posistor, dans lequel un prolongement (4b') relié de manière conductrice de l'électricité à un contact (7b) à enfichage comporte un point (6') de séparation à proximité du contact (7b) à enfichage et il est fixé à l'une des extrémités du prolongement (4b') qui est voisine du contact (7b) à enfichage un prolongement (81') coudé du fusible (8') thermique en forme de V dont l'autre prolongement (82') est fixé entre la pièce (4b) formant borne et un contact (5b) à ressort s'appliquant au posistor (3), de sorte que le sommet ou point de rebroussement (83') du fusible (8) soit très près du posistor (3).
EP97909150A 1996-09-27 1997-09-18 Dispositif pour eviter les phenomenes de surchauffe dans des appareils electriques Expired - Lifetime EP0928492B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19639942A DE19639942C2 (de) 1996-09-27 1996-09-27 Thermische Sicherung
DE19639942 1996-09-27
PCT/DE1997/002111 WO1998013846A1 (fr) 1996-09-27 1997-09-18 Dispositif pour eviter les phenomenes de surchauffe dans des appareils electriques

Publications (2)

Publication Number Publication Date
EP0928492A1 EP0928492A1 (fr) 1999-07-14
EP0928492B1 true EP0928492B1 (fr) 2000-12-06

Family

ID=7807194

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97909150A Expired - Lifetime EP0928492B1 (fr) 1996-09-27 1997-09-18 Dispositif pour eviter les phenomenes de surchauffe dans des appareils electriques

Country Status (11)

Country Link
US (1) US6222715B1 (fr)
EP (1) EP0928492B1 (fr)
JP (1) JP2001504628A (fr)
KR (1) KR20000048633A (fr)
CN (1) CN1231759A (fr)
AT (1) ATE198008T1 (fr)
BR (1) BR9711577A (fr)
DE (2) DE19639942C2 (fr)
DK (1) DK0928492T3 (fr)
ES (1) ES2153184T3 (fr)
WO (1) WO1998013846A1 (fr)

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US7399453B2 (en) * 2001-11-15 2008-07-15 Powerspan Corp. Discharge reactor fuse link
JP4119159B2 (ja) * 2002-04-25 2008-07-16 タイコ エレクトロニクス レイケム株式会社 温度保護素子
KR20040065342A (ko) * 2003-01-13 2004-07-22 자화전자 주식회사 피티시소자 파괴시 진행성을 방지하기 위한 안전모드 구조
US20060147712A1 (en) * 2003-07-09 2006-07-06 Maxwell Technologies, Inc. Dry particle based adhesive electrode and methods of making same
US7791860B2 (en) 2003-07-09 2010-09-07 Maxwell Technologies, Inc. Particle based electrodes and methods of making same
US7342770B2 (en) * 2003-07-09 2008-03-11 Maxwell Technologies, Inc. Recyclable dry particle based adhesive electrode and methods of making same
US7352558B2 (en) 2003-07-09 2008-04-01 Maxwell Technologies, Inc. Dry particle based capacitor and methods of making same
US20050250011A1 (en) * 2004-04-02 2005-11-10 Maxwell Technologies, Inc. Particle packaging systems and methods
US7508651B2 (en) 2003-07-09 2009-03-24 Maxwell Technologies, Inc. Dry particle based adhesive and dry film and methods of making same
US7920371B2 (en) 2003-09-12 2011-04-05 Maxwell Technologies, Inc. Electrical energy storage devices with separator between electrodes and methods for fabricating the devices
US7495349B2 (en) * 2003-10-20 2009-02-24 Maxwell Technologies, Inc. Self aligning electrode
US7016177B1 (en) 2003-11-07 2006-03-21 Maxwell Technologies, Inc. Capacitor heat protection
US7180726B2 (en) * 2003-11-07 2007-02-20 Maxwell Technologies, Inc. Self-supporting capacitor structure
US7027290B1 (en) 2003-11-07 2006-04-11 Maxwell Technologies, Inc. Capacitor heat reduction apparatus and method
US7203056B2 (en) * 2003-11-07 2007-04-10 Maxwell Technologies, Inc. Thermal interconnection for capacitor systems
US7384433B2 (en) 2004-02-19 2008-06-10 Maxwell Technologies, Inc. Densification of compressible layers during electrode lamination
US7090946B2 (en) 2004-02-19 2006-08-15 Maxwell Technologies, Inc. Composite electrode and method for fabricating same
US20050269988A1 (en) * 2004-06-04 2005-12-08 Maxwell Technologies, Inc. Voltage balancing circuit for multi-cell modules
US7492574B2 (en) 2005-03-14 2009-02-17 Maxwell Technologies, Inc. Coupling of cell to housing
US7440258B2 (en) 2005-03-14 2008-10-21 Maxwell Technologies, Inc. Thermal interconnects for coupling energy storage devices
US20080315983A1 (en) * 2005-07-11 2008-12-25 Byoung-Koo Oh Safety Device For Preventing Propagation in Fracture of Ceramic Element
US8518573B2 (en) * 2006-09-29 2013-08-27 Maxwell Technologies, Inc. Low-inductive impedance, thermally decoupled, radii-modulated electrode core
US20080201925A1 (en) 2007-02-28 2008-08-28 Maxwell Technologies, Inc. Ultracapacitor electrode with controlled sulfur content
US20080314893A1 (en) * 2007-06-25 2008-12-25 Adair Joel E Heating device with adjusting electrical contact
US8174354B2 (en) * 2010-07-23 2012-05-08 Sensata Technologies Massachusetts, Inc. Method and apparatus for control of failed thermistor devices

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Also Published As

Publication number Publication date
JP2001504628A (ja) 2001-04-03
US6222715B1 (en) 2001-04-24
CN1231759A (zh) 1999-10-13
DE59702740D1 (de) 2001-01-11
ATE198008T1 (de) 2000-12-15
WO1998013846A1 (fr) 1998-04-02
DE19639942C2 (de) 1999-07-01
DK0928492T3 (da) 2001-03-05
ES2153184T3 (es) 2001-02-16
DE19639942A1 (de) 1998-04-02
BR9711577A (pt) 1999-08-24
EP0928492A1 (fr) 1999-07-14
KR20000048633A (ko) 2000-07-25

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