EP3192093A1 - Mehrfachsicherung - Google Patents
MehrfachsicherungInfo
- Publication number
- EP3192093A1 EP3192093A1 EP15775388.0A EP15775388A EP3192093A1 EP 3192093 A1 EP3192093 A1 EP 3192093A1 EP 15775388 A EP15775388 A EP 15775388A EP 3192093 A1 EP3192093 A1 EP 3192093A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuse
- connecting arm
- multiple fuse
- pyrotechnic
- securing 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
- H01H39/006—Opening by severing a conductor
-
- 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
- H01H85/0241—Structural association of a fuse and another component or apparatus
-
- 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
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
- H01H2039/008—Switching devices actuated by an explosion produced within the device and initiated by an electric current using the switch for a battery cutoff
-
- 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
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
- H01H2085/0555—Input terminal connected to a plurality of output terminals, e.g. multielectrode
-
- 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
- H01H85/044—General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified
Definitions
- the invention relates to a multiple fuse for the automotive sector comprising a plurality of fuse elements and a power distribution plate with a plurality of conductor strips, wherein one of these conductor strips is designed as a primary connecting arm and at least one further conductor strip as a secondary connecting arm.
- fuses are used, with the help of individual current paths or circuits are protected against overcurrents.
- fuse arrangements with a plurality of fuses, called multiple fuses are used, these being designed to protect a plurality of current paths having a common starting point or connection node.
- Such a fuse arrangement can be seen for example from DE 20 2000 002 952 U1.
- pyrotechnic security elements are increasingly being installed in motor vehicles, which, however, in contrast to classical security elements, do not serve the overcurrent or overvoltage protection.
- a pyrotechnic safety element also known as a pyrotechnic safety switch, pyrotechnic switch or pyrotechnic isolating element, is a type of emergency stop switch of stop category 0 (EN ISO 13850: 2008 point 4.1 .4 and EN 60204-1: 2006 point 9.2 .2), which can be triggered manually and / or automatically controlled and triggered under predetermined conditions.
- such a pyrotechnic fuse element is in the installed state signal technically connected to the same sensors as an airbag control unit in the motor vehicle, so that in the case of triggering of an airbag in the motor vehicle always the pyrotechnic fuse element is triggered.
- the triggering of the pyrotechnic fuse element thus takes place in particular in the event of a traffic accident and this measure contributes to the electrical energy sources of the motor vehicle after a traffic accident quasi isolated and separated from the rest of the motor vehicle electrical system. This prevents that accidentally exposed and / or damaged electrical cable connections or exposed and / or damaged electronic components pose a risk, especially for rescue workers, so ignite, for example, leaking oil or gasoline.
- a module is further known in which a plurality of fuses provided for a motor vehicle and a pyrotechnic fuse element are combined in an assembly and housed in a common housing.
- the pyrotechnic fuse element is placed directly on a battery terminal.
- the securing element is provided with a securing plate having the fuses and with a connecting bolt, e.g. connected to the starter.
- the present invention seeks to provide an advantageous embodiment of a multiple backup.
- the multiple fuse is designed for the motor vehicle sector and comprises a plurality of fuse elements and a power distributor plate, also referred to below as a distributor plate, with a plurality of conductor strips.
- a power distributor plate also referred to below as a distributor plate
- one of these conductor strips is designed as a primary connecting arm and another, preferably at least two further conductor strips are designed as secondary connecting arms.
- a pyrotechnic securing element is positioned in the region of the primary connecting arm and accordingly one and in particular only one of the securing elements of the multiple fuse is not designed to protect a current path against overcurrents but as a safety switch of the type mentioned in the introduction.
- That power distribution plate is further configured in one piece and has a strip-shaped connection strip, on which all conductor strips are integrally formed, so that all conductor strips are mechanically and electrically conductively connected to one another via the connection strip.
- the shape or geometry of the power distribution plate thus corresponds to a typical, widespread form, on the one hand is simple and on the other hand, has proven itself in use. In this case, a comb-like shape or basic geometry is typical in which a plurality of conductor strips and in particular all conductor strips are aligned substantially parallel.
- the primary connecting arm is preferably designed as a feed arm for a feed-current path and accordingly in the installed state of the multiple fuse at least temporarily electrical power is fed from an electrical energy source via the feed arm and distributed to the secondary terminal arms and the secondary connecting arm or the secondary Connection arms, which are designed as outgoing arms, discharged into connected load current paths.
- the primary connecting arm is designed as a departure arm and in particular for high currents, based on the typical currents in an electrical system of a motor vehicle, designed, typically for currents greater than 10A.
- the primary connecting arm is then in the installed state preferably part of a current path to a starter-generator unit of a motor vehicle or part of a current path to high-voltage components of an electric or hybrid vehicle.
- high-voltage components are, for example, an electric traction motor, a high-voltage battery and / or other power components for electric driving.
- the connection strip is designed as a feed arm.
- the pyrotechnic fuse element be integrated into the multiple fuse as a result of the configuration of the distributor plate and thus be an integrated part of this multiple fuse.
- the pyrotechnic securing element is arranged on one arm, the primary connecting arm, of the one-part distributor plate and interrupts it in the event of activation, ie cuts through it.
- the pyrotechnic fuse element is in the installed state signal technically connected to the same sensors as an airbag control unit in the motor vehicle, so that in the case of triggering of an airbag in the motor vehicle always the pyrotechnic fuse element is triggered.
- the triggering of the pyrotechnic fuse element thus takes place in particular in the event of a traffic accident and this measure contributes to the fact that the electrical energy sources of the motor vehicle are virtually isolated after a traffic accident and separated from the rest of the motor vehicle electrical system. This prevents that accidentally exposed and / or damaged electrical cable connections or exposed and / or damaged electronic components pose a risk, especially for rescue workers, so ignite, for example, leaking oil or gasoline.
- the pyrotechnic fuse element is constructed according to a known principle. It comprises a pyrotechnic propellant charge, which is ignited by an electrical ignition signal, in particular a sensor signal of a connected sensor, and consequently a separating body, usually a wedge or a bolt, accelerated, so that this mechanically cuts the conductor strip formed as a primary connecting arm, whereby the electric Connection, for example, between an electrical energy source, typically a battery, and connected to the primary connecting arm current paths, is interrupted. Due to this principle of operation, such a pyrotechnic fuse element is sometimes referred to as a battery disconnect switch.
- the primary connecting arm at the intended attack position of the pyrotechnic securing element has a predetermined breaking point, due to which the mechanical force to be applied is reduced for the division of the primary connecting arm.
- an adapted pyrotechnic fuse element is used, which has, for example, a smaller or weaker pyrotechnic propellant.
- a corresponding predetermined breaking point is realized, for example, by a material reduction, such as a groove, or by at least one aperture, such as a slot.
- the distributor plate is also, as already stated above, preferably kept very simple in terms of its design and in particular its shape and preferably has an example comb-like structure with a transverse region, a base or a connecting strip and perpendicular from this outgoing connecting arms or conductor strips.
- the one-piece and integrally formed distributor plate also has a uniform sheet thickness or plate thickness. Furthermore, the conductor strips formed as connecting arms, a connection element, such as a tab or an opening, which for mechanical and electrical connection, for. a power supply or an outgoing supply cable is formed.
- the power distribution plate is formed as a stamped sheet metal or stamped sheet, since this can be produced in this case particularly simple and inexpensive.
- the pyrotechnic securing element is advantageously a prefabricated unit, which is preferably designed such that it is attached as a unit to the primary connecting arm.
- the assembly is preferably placed over the primary connecting arm, for example, plugged onto the primary connecting arm, pushed onto the primary connecting arm or the unit is formed in two or more parts and is fastened by, for example, latching assembly of the (housing) parts.
- the pyrotechnic fuse element therefore has a slot-shaped opening through which the primary connecting arm is performed.
- the power distribution plate consists of a one-piece plate with a preferably strip-shaped base, the connecting strip on which preferably exactly one primary connecting arm and a plurality of secondary connecting arms are formed. According to one embodiment variant, these are substantially perpendicular to the strip-shaped base and are preferably oriented substantially parallel to one another.
- a securing element is conveniently positioned in the respective region of each secondary connecting arm, so that each secondary connecting arm is part of a current path separately protected by a securing element.
- the fuse elements in the respective regions of the secondary connecting arms for securing the corresponding current paths against overcurrents are formed and accordingly, a multiple fuse presented here has two types of fuse elements, which differ fundamentally not only by the triggering condition, but also in terms of the operating principle.
- the fuse elements positioned in the region of the secondary connection arms are further preferably designed as fuses and are usually designed for rated currents in the range 3A to 300A, in particular in the range 3A to 100A.
- those fuses are integrated into the secondary connecting arms, wherein the corresponding secondary connecting arms are suitable for this purpose, for example, formed by choice of material or shape. In this case, so then form the configured as a secondary terminal arms conductor strip itself fuse areas.
- a multiple fuse with a plurality of connecting arms is preferred, in which exactly one securing element is arranged and / or integrated in the region of each connecting arm.
- a multiple example 2 described below and illustrated in FIG. 1 is designed for a non-illustrated motor vehicle electrical system of a motor vehicle and serves to protect a plurality of current paths which have a common starting point or connection node, here a feed terminal 3 designed as a breakthrough with a circular cross section. to have.
- a one-piece power distribution plate 4 with uniform sheet thickness hereinafter also referred to as distributor plate 4, which has a plurality of conductor strips 6, wherein a conductor strip 6 is formed as a primary connecting arm 8 and wherein three parallel thereto extending conductor strips 6 are formed as secondary connecting arms 10.
- the conductor strips 6 designed as connecting arms 8, 10 are further connected to one another via a transverse connecting strip 12, which has the feed connection 3. Accordingly, in the installed state of the multiple fuse 2 at least temporarily electrical power is fed via the feed terminal 3 and subsequently on the transverse connecting strip 12, the primary connecting arm 8 on the one hand and the secondary connecting arms 10 on the other hand electrically conductively connected to the feed terminal 3, on the connecting arms. 8 , 10 split.
- the electrical power is then dissipated via the connecting arms 8, 10 into four current paths, each connecting arm 8, 10 being part of one of these current paths.
- the power distribution plate 4 is in this case formed as a one-piece and one-piece stamped sheet metal made of copper and accordingly, the conductor strips 6 are not components but partial forms of the power distribution plate 4.
- openings 14 are provided with circular cross-section in the region of the respective free ends, so that the free ends, as well as the feed terminal 3, forming terminal straps, which can not be connected with illustrated connecting cable by means of screw connections.
- a fuse 16 is positioned at each secondary connecting arm 10, which is integrated into the respective secondary connecting arm 10.
- the fuses 1 6 are also designed for different tripping conditions and thus for different rated currents.
- the multiple fuse 2 has a pyrotechnic securing element 18, which is positioned in the region of the primary connecting arm 8. This does not function as a fuse element to protect against overcurrents but as a kind of emergency stop.
- the primary connecting arm 8 is severed by means of the pyrotechnic securing element 18 when triggered, so that the subsequent current path from the supply terminal 3 and thus from the electrical energy source which at least temporarily feeds electrical power via the feed terminal 3 is disconnected.
- the pyrotechnic fuse element 18 is in this case constructed in a conventional manner and comprises in a manner not shown a pyrotechnic propellant and a separating wedge, which is driven by an ignition of the pyrotechnic propellant to the primary connecting arm 8 and the primary connecting arm 8 severed.
- the ignition of the pyrotechnic propellant This is done by an electrical sensor signal, which is fed via a signal input 20 on the pyrotechnic fuse element 18.
- the signal input 20 is signal connected to a non-illustrated airbag control unit or with an airbag sensor, so that in the event of an accident that leads to the triggering of the corresponding airbag, and the triggered pyrotechnic fuse element 18 and the pyrotechnic propellant is ignited.
- the individual functional elements of the pyrotechnic securing element 18 are enclosed in an insulating housing.
- the primary connecting arm 8 also has a predetermined breaking point 22, which is formed for example by three slot-shaped openings in the primary connecting arm 8.
- the corresponding breakthroughs are indicated in Fig. 1 by dashed lines.
- the pyrotechnic securing element 18 is pushed as a prefabricated unit in an assembly process step.
- An alternative embodiment of the predetermined breaking point 22 is also shown in Fig. 2 by dashed lines. Here, a plurality of openings arranged along a line with a round cross-section form the predetermined breaking point 22.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Fuses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP14184151.0A EP2996132A1 (de) | 2014-09-09 | 2014-09-09 | Mehrfachsicherung |
| PCT/EP2015/070522 WO2016038051A1 (de) | 2014-09-09 | 2015-09-08 | Mehrfachsicherung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3192093A1 true EP3192093A1 (de) | 2017-07-19 |
| EP3192093B1 EP3192093B1 (de) | 2023-05-03 |
Family
ID=51518613
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14184151.0A Withdrawn EP2996132A1 (de) | 2014-09-09 | 2014-09-09 | Mehrfachsicherung |
| EP15775388.0A Active EP3192093B1 (de) | 2014-09-09 | 2015-09-08 | Mehrfachsicherung |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14184151.0A Withdrawn EP2996132A1 (de) | 2014-09-09 | 2014-09-09 | Mehrfachsicherung |
Country Status (2)
| Country | Link |
|---|---|
| EP (2) | EP2996132A1 (de) |
| WO (1) | WO2016038051A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3088592B1 (fr) * | 2018-11-15 | 2022-03-25 | Livbag Sas | Dispositif de securite pour circuit-electrique de vehicule |
| DE102022113713A1 (de) | 2022-05-31 | 2023-11-30 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Spannungswandlereinrichtung für ein Hochvoltsystem eines Kraftfahrzeugs |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19749896A1 (de) * | 1997-11-12 | 1999-06-02 | Knipping Kunststofftechnik Wer | Pyrotechnischer Sicherheitsschalter |
| FR2775539B1 (fr) * | 1998-02-27 | 2000-03-31 | Renault | Dispositif disjoncteur pour vehicule automobile |
| DE102006046347B4 (de) * | 2006-09-28 | 2012-06-06 | Auto-Kabel Management Gmbh | Elektrische Sicherungsvorrichtung und Batterie mit einer derartigen Sicherungsvorrichtung |
| DE102006054915B4 (de) * | 2006-11-22 | 2016-03-31 | Volkswagen Ag | Sicherungsbox mit einer Einrichtung zur Stromverteilung |
| DE102007051504A1 (de) * | 2007-10-27 | 2009-04-30 | Daimler Ag | Sicherheitseinrichtung |
| DE202009002852U1 (de) | 2009-02-27 | 2009-06-18 | Leoni Bordnetz-Systeme Gmbh | Sicherungsanordnung |
| DE202011102353U1 (de) * | 2011-06-25 | 2011-09-15 | Leoni Bordnetz-Systeme Gmbh | Sicherungsanordnung insbesondere für ein Kraftfahrzeug-Bordnetz |
| JP2014067618A (ja) * | 2012-09-26 | 2014-04-17 | Toyoda Gosei Co Ltd | 電気回路の遮断装置 |
-
2014
- 2014-09-09 EP EP14184151.0A patent/EP2996132A1/de not_active Withdrawn
-
2015
- 2015-09-08 EP EP15775388.0A patent/EP3192093B1/de active Active
- 2015-09-08 WO PCT/EP2015/070522 patent/WO2016038051A1/de not_active Ceased
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2016038051A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3192093B1 (de) | 2023-05-03 |
| WO2016038051A1 (de) | 2016-03-17 |
| EP2996132A1 (de) | 2016-03-16 |
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