WO2008116675A1 - Thermosicherung für den einsatz in elektrischen modulen - Google Patents
Thermosicherung für den einsatz in elektrischen modulen Download PDFInfo
- Publication number
- WO2008116675A1 WO2008116675A1 PCT/EP2008/050930 EP2008050930W WO2008116675A1 WO 2008116675 A1 WO2008116675 A1 WO 2008116675A1 EP 2008050930 W EP2008050930 W EP 2008050930W WO 2008116675 A1 WO2008116675 A1 WO 2008116675A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- connecting element
- thermal fuse
- actuator
- triggering
- fuse according
- 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.)
- Ceased
Links
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
- 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
- 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
- H01H2037/762—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 using a spring for opening the circuit when the fusible element melts
Definitions
- the invention relates to thermal fuses for use in electrical modules, in particular for high-current applications.
- thermal fuse In order to protect electrical modules against overheating, irreversible thermal fuses are required, which interrupt (trigger) a current-carrying conductor if the ambient temperature is too high.
- the thermal fuses are designed so that the triggering temperature is not achieved due to a current flow, so that it is ensured that they can not be triggered by a high current, but only by an excessively high ambient temperature.
- a thermal fuse serves to provide an independent shutdown path for electrical modules which are at impermissibly high temperatures in the module, e.g. due to component failures, short circuits, e.g. due to external influences, malfunctions of insulating materials and the like. safely interrupts the flow of electricity.
- thermal fuses are usually based on the concept of a fixed spring, such as a spring. a soldered leaf spring.
- a mechanical force is permanently exerted on the joint, which leads to quality problems, especially in long periods of use, such as. long operating times in the automotive sector.
- a disruption of the solder joint may occur after a certain time.
- a thermal fuse in particular for use in an electrical module in the automotive sector, is provided.
- the thermal fuse comprises a connecting element which is electrically and mechanically connected to connection points in order to provide a permanent, electrically conductive connection via the latter, and an actuator formed separately from the connecting element which triggers without receiving electrical energy when an ambient temperature is a triggering temperature achieved, and thereby interrupts the electrical connection formed by the connecting element in a mechanical manner.
- the thermal fuse has the advantage that due to the separate formation of connecting element and actuator triggering the thermal fuse is substantially independent of the current flowing through the current flowing through the connecting element current but depends only on the ambient temperature of the thermal fuse. Furthermore, with the above structure, it is possible to dispose the connecting member between the terminals without bias, so that a danger of degradation of the contacting of the connecting member at the terminals can be reduced.
- the actuator may be provided with a stamp, which in the event of a triggering in the direction of Vietnameseselemen- Tes is movable, thereby to solve the electrical connection.
- the actuator may be formed with a cutting mechanism for triggering the
- the connecting element can be designed as a current-conducting flat conductor, in particular as a foil or sheet.
- the flat conductor may be provided with a predetermined separation point.
- connection points can be arranged on line regions of a stamped grid.
- the actuator is preferably arranged on a carrier element that is mechanically connected to the rod grid in order to determine an alignment of the actuator with respect to the connecting element.
- the actuator comprises one or more mutually reacting materials, which are separated from each other by a fusible partition wall, wherein the melting temperature of the partition corresponds to the triggering temperature, wherein the actuator is arranged on the connecting element, that in the case of release, a volume change due to the reacting with each other Materials breaks the electrical connection formed by the connecting element breaks.
- the connecting element may be connected at the connection points by a material which can be melted at a melting temperature, the melting temperature of the fusible material being equal to or less than the triggering temperature.
- the connecting element can either be fixedly connected to each of the connection points or can be used with the aid of a material which can be melted at a melting temperature. be bound, wherein the melting temperature of the fusible material is equal to or less than the triggering temperature.
- the plunger of the actuator is biased and held by a fuser, wherein the fuser is arranged to melt and release the biased punch when the ambient temperature reaches the firing temperature.
- Fig. 1 is a schematic cross-sectional view of a first embodiment of a thermal fuse
- FIG. 2 shows a schematic representation of a cross section of a second embodiment of a thermal fuse
- FIG. 3 is a cross-sectional view of an actuator for a thermal fuse according to the first or second embodiment
- 4a to 4c are schematic representations of a cross section of a thermal fuse according to a third embodiment before the triggering, during the triggering or after the triggering.
- a first embodiment of a thermal fuse is shown schematically.
- the thermal fuse is located in a stamped grid 1 between two line areas 2.
- the line areas 2 each have a connection point 3.
- the connection points 3 are connected via a flat conductor, e.g. a current-conducting foil 4 or a sheet, e.g. made of Cu or another conductive material, connected to one another as a connecting element, so that there is a current-conducting connection between the line regions 2.
- the current-conducting foil 4 is on the connection points 3 welded (dotted) and thus reliably connected mechanically and electrically with the line areas 2.
- the current-conducting foil 4 can also be fastened permanently to the connection points 3 in other ways.
- the leadframe 1 comprises a series of tracks and areas that provide electrical connections between various positions in a module or module.
- the printed conductors of the stamped grid can be embedded in an insulating material. At locations where the interconnects are to be contacted, the insulation material is removed and components or connections can be electrically connected to the conductor track of the stamped grid 1.
- an actuator 6 which, when an ambient temperature exceeds a triggering temperature, moves a plunger 7 in the direction of the current-conducting foil 4.
- the punch 7 has at a free end a cutting edge 8 which slides along a cutting edge 9 of a cutting element and thereby performs a cutting. Between the cutting edge 9 and the cutting edge 8 is in the untripped state of the thermal fuse, the current-conducting film. 4
- the current-conducting foil 4 between the cutting edge 8 and the cutting edge 9 is completely cut to interrupt the flow of current through the foil 4.
- the current-conducting foil 4 facing the end of the punch 7 has a bevel 11, which presses on a further movement of the punch 7 along the cutting edge 9, a portion of the current-conducting film of a further section at the cutting position.
- the punch 7 is preferably formed of a non-conductive material, so that after cutting through the current-conducting foil 4 can be reliably ensured that no electrical connection between the Lei 2 areas of the punching plate 1 consists.
- the material of the punch 7 should be selected so that the cutting edge 8 retains its sharpness throughout the life of the thermal fuse, such as ceramic.
- the actuator 6 is preferably configured to move the plunger 7 without using electrical energy.
- the triggering of the thermal fuse is not dependent on the availability of a power supply.
- the actuator 6 is arranged on a carrier element 12 which is connected to the stamping plate 1 in a defined manner. Thereby, the alignment of the punch 7 of the actuator 6 in the direction of the current-conducting film 4 can be ensured.
- the support member 12 is preferably highly thermally conductive, e.g. formed of a metal to supply the ambient heat to the actuator 6.
- thermal fuse a further embodiment of a thermal fuse is shown schematically.
- Like reference numerals designate like elements or elements of similar function.
- the thermal fuse of FIG. 2 comprises a punching plate 1 with two line regions 2, which are connected to one another via a current-conducting film 4 as a connecting element.
- the current-conducting film 4 is welded via a first connection point 3 to a first of the line regions 2 or otherwise permanently and reliably electrically connected to the
- the actuator 6 has no cutting in this embodiment.
- the free end of the punch 7 of the actuator 6 may be arbitrarily shaped.
- the punch is not formed conductive; However, it can also be designed to be conductive, since the interruption of the current flow takes place in the region of the second connection point 3.
- the electrically conductive connection between the second connection point and the current-conducting film 4 may be formed by a solder or with another conductive material. Exceeds the ambient temperature, the melting temperature of the solder or the other conductive material, the electrically conductive connection is initially maintained until at a further rise in ambient temperature causes the actuator 6 and due to the molten state of the solder, the current-conducting film without much effort of the can lift the second connection point 3.
- both connection points 3 can also be connected to the current-conducting foil 4 by welding or another permanent connection.
- the force applied by the plunger 7 in the case of triggering must be so great as to tear the current-conducting foil 4 apart in order to interrupt the flow of current.
- the current-conducting foil may have a constriction, a perforation or an area of reduced thickness, at least in the area of impact of the punch 7, in order to create a predetermined breaking point, when the actuator 6 triggers.
- the current-conducting film 4 may be biased between the connection points 3, so that a separation is facilitated when the free end of the punch 7, the current-conducting film 4 strikes.
- FIG. 3 an example of an actuator 6 is shown in a cross-sectional view, as it can be used in the first and in the second embodiment.
- the actuator 6 comprises a cylindrical punch 7, which is provided with a stop element 15, which is located in the interior of an actuator housing 16 of the actuator 6.
- the stop element 15 has a preferably circumferential abutment surface 17, which is held by a fusible material 18 in the form of a fusible body of a cover plate 19, which serves as a further abutment surface 19 and through which the punch 7 protrudes, spaced.
- the stop element 15 is biased by a spring 19 which is arranged between the actuator housing 16 and an inner surface of a recess in the stop element 15. The spring element 19 thereby causes a spring force of the abutment surface 17 in the direction of the further cover plate 19, between which the fusible element 18 is arranged.
- FIG. 4 a shows a thermal fuse according to a third embodiment of the invention.
- a rigid connecting element 25 is applied, which is electrically conductive and electrically connected to the connection points 3 via a conductive, melting at a certain temperature material 26, such as a solder.
- the melting point of the material 26 is preferably below the trigger temperature of the actuator 6.
- the actuator 6 is designed, for example, as a primer in which, for example, two materials 27, 28 which react with one another can be separated from one another by a fusible partition 29.
- an ignitable material may be provided therein which ignites at a corresponding trip temperature, wherein an exothermic reaction takes place, which causes a corresponding change in volume.
- the ignition material is selected to react in an exothermic reaction that accelerates itself.
- the dividing wall 29 melts and causes the two mutually reacting materials 27, 28 to come into contact and react with one another.
- the reaction causes a volume expansion in the direction of the connecting element 25, which is then lifted or displaced from the connection points 3, on which the already molten material 26 is located, and thereby interrupts the conductive connection between the line regions 2, as shown in FIG 4c, which shows the trigger case, is shown.
- Further embodiments are possible, which use as a bimetallic actuator actuator or a memory metal actuator as a triggering element.
- an actuator may include a biased spring element that is biased by a fuse element. Upon reaching the release temperature, the melting element melts and the spring element gives way and interrupts the foie 4 or generally the flat conductor.
- the connecting element 4, 25 designed so that at the maximum current for which the thermal fuse is designed, no appreciable increase in temperature of the connecting element occurs, i. the electrical resistance or the cross section is chosen so that the maximum current can be well supported by the connecting element.
- the triggering of the thermal fuse should only be done mechanically by the activation of the actuator and be irreversible, i. Under no circumstances should the opened fuse become conductive again.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Fuses (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP08708253A EP2126948A1 (de) | 2007-03-26 | 2008-01-28 | Thermosicherung für den einsatz in elektrischen modulen |
| US12/532,962 US20100073120A1 (en) | 2007-03-26 | 2008-01-28 | Thermal fuse for use in electric modules |
| JP2010500153A JP2010522418A (ja) | 2007-03-26 | 2008-01-28 | 電気的なモジュール内で使用するための温度ヒューズ |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007014339A DE102007014339A1 (de) | 2007-03-26 | 2007-03-26 | Thermosicherung für den Einsatz in elektrischen Modulen |
| DE102007014339.9 | 2007-03-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008116675A1 true WO2008116675A1 (de) | 2008-10-02 |
Family
ID=39308006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2008/050930 Ceased WO2008116675A1 (de) | 2007-03-26 | 2008-01-28 | Thermosicherung für den einsatz in elektrischen modulen |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20100073120A1 (de) |
| EP (1) | EP2126948A1 (de) |
| JP (1) | JP2010522418A (de) |
| CN (1) | CN101647080A (de) |
| DE (1) | DE102007014339A1 (de) |
| WO (1) | WO2008116675A1 (de) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010038401B4 (de) | 2010-07-26 | 2013-11-14 | Vishay Bccomponents Beyschlag Gmbh | Thermosicherung sowie Verwendung einer solchen |
| US8816390B2 (en) * | 2012-01-30 | 2014-08-26 | Infineon Technologies Ag | System and method for an electronic package with a fail-open mechanism |
| US20130270461A1 (en) * | 2012-04-13 | 2013-10-17 | Kla-Tencor Corporation | Smart memory alloys for an extreme ultra-violet (euv) reticle inspection tool |
| US9443683B2 (en) | 2012-04-24 | 2016-09-13 | Commscope Technologies Llc | RF thermal fuse |
| EP2720246B1 (de) * | 2012-10-09 | 2015-07-08 | CommScope Technologies LLC | RF-Temperatursicherung |
| US9887057B2 (en) * | 2012-11-20 | 2018-02-06 | Littelfuse, Inc. | Remote activated fuse and circuit |
| WO2015123436A1 (en) * | 2014-02-12 | 2015-08-20 | Owen Oil Tools Lp | Detonator interrupter for well tools |
| JP6384334B2 (ja) * | 2015-01-09 | 2018-09-05 | 株式会社オートネットワーク技術研究所 | 電気接続箱 |
| DE102015007420A1 (de) * | 2015-06-09 | 2016-12-15 | Diehl Metal Applications Gmbh | Vorrichtung und Verfahren zum Unterbrechen oder zum Herstellen einer elektrischen Verbindung |
| FR3051282B1 (fr) * | 2016-05-16 | 2021-05-21 | Herakles | Dispositif de coupure destine a etre relie a un circuit electrique |
| US20200028404A1 (en) * | 2017-02-20 | 2020-01-23 | Panasonic Intellectual Property Management Co., Ltd. | Electric motor and electric motor manufacturing method |
| DE102017108404B4 (de) * | 2017-04-20 | 2020-06-18 | Webasto SE | Elektrische Heizeinrichtung |
| JP6962752B2 (ja) * | 2017-09-12 | 2021-11-05 | 株式会社ダイセル | 電気回路遮断装置 |
| CN107919249B (zh) * | 2017-12-19 | 2020-05-26 | 西安中熔电气股份有限公司 | 一种智能型熔断器 |
| KR102772823B1 (ko) * | 2019-05-08 | 2025-02-24 | 주식회사 엘지에너지솔루션 | 전지 모듈 및 이를 포함하는 디바이스 |
| JP2024110141A (ja) * | 2023-02-02 | 2024-08-15 | デクセリアルズ株式会社 | 保護回路 |
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-
2007
- 2007-03-26 DE DE102007014339A patent/DE102007014339A1/de not_active Ceased
-
2008
- 2008-01-28 CN CN200880009974A patent/CN101647080A/zh active Pending
- 2008-01-28 US US12/532,962 patent/US20100073120A1/en not_active Abandoned
- 2008-01-28 JP JP2010500153A patent/JP2010522418A/ja not_active Withdrawn
- 2008-01-28 EP EP08708253A patent/EP2126948A1/de not_active Withdrawn
- 2008-01-28 WO PCT/EP2008/050930 patent/WO2008116675A1/de not_active Ceased
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10054153A1 (de) * | 1999-11-05 | 2001-07-19 | Yazaki Corp | Leistungsschalter und diesen verwendendes Kabelbaumgerät |
| DE10226357A1 (de) * | 2002-06-13 | 2004-01-08 | INTER CONTROL Hermann Köhler Elektrik GmbH & Co KG | Thermische Sicherung |
| US20060098370A1 (en) * | 2002-09-17 | 2006-05-11 | Flanders Patrick S | Fire safety fusible link electrical terminal block |
| DE102005005549A1 (de) * | 2005-02-07 | 2006-08-10 | Robert Bosch Gmbh | Vorrichtung zur Steuerung eines Heizelements in einem Kraftfahrzeug |
| DE102005014601A1 (de) * | 2005-03-31 | 2006-10-05 | Conti Temic Microelectronic Gmbh | Elektronische Baugruppe |
| DE102005040308A1 (de) * | 2005-08-24 | 2007-03-01 | Wehrle Autoelektronik Gmbh | Thermosicherung, insbesondere für ein Leistungsmodul eines Kraftfahrzeugs, sowie Leistungsmodul mit einer derartigen Thermosicherung |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2126948A1 (de) | 2009-12-02 |
| DE102007014339A1 (de) | 2008-10-02 |
| CN101647080A (zh) | 2010-02-10 |
| JP2010522418A (ja) | 2010-07-01 |
| US20100073120A1 (en) | 2010-03-25 |
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