• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    In a circuit breaker, a busbar (18) passes through a cavity (25) in which a piston (14) can be moved. By moving the piston (14), a circuit board (19) is broken out of the busbar (18), whereby the flow of current is interrupted. The current isolator has at least one metallic filter element (16) which, according to the invention, extends as far as the cavity (25). This ensures that the cut-off circuit board (19) touches the at least one filter element (16) during triggering. After the circuit board (19) has been separated from the busbar (18), an arc is formed which, when the circuit board (19) touches the filter element (16), changes over to the metallic filter element (16) when the circuit board (19) moves further , whereby the energy from the system inductance is converted into heat loss in the filter element (16). With a suitable design, there is only a moderate increase in pressure in the current isolator and thus practically no external effect. In addition, an extinguishing agent, e.g. a silicone oil or a silicone-containing grease, can be present. The housing can be sealed and the filter elements (16, 16 ') can be isolated from the outside world.
    公开号:AT522735A1
    申请号:T50635/2019
    申请日:2019-07-12
    公开日:2021-01-15
    发明作者:
    申请人:Hirtenberger Automotive Safety Gmbh & Co Kg；
    IPC主号:
    专利说明:

    has a metallic filter element.
    Such a current isolator is known from DE 102018125059 A1. It has blow-out channels for the arc that occurs during the separation, in which metallic filter elements can be present that cool the plasma of the arc and thus contribute to the arc being extinguished more quickly. The blow-out channels connect the cavity in which the piston moves and in which the arc is formed with the area around the circuit breaker. The filter material is only located inside the exhaust ducts, i.e. the area of the exhaust ducts adjacent to the cavity is free of filter material.
    It is an object of the present invention to further improve such a current isolator so that the external effect is still achieved
    is further reduced.
    This object is achieved according to the invention by a current isolator of the type mentioned at the beginning in that the filter element extends as far as the cavity. It is thereby achieved that the separated circuit board touches the at least one filter element during the triggering. After separating the board from the conductor, an arc forms between the end of the busbar and the board. As the circuit board touches the filter element, the arc rises when the circuit board is further removed from the ends of the busbar on the metallic filter element, whereby the energy from the system inductance is converted into heat loss in the filter. With a suitable design, there is only a moderate increase in pressure in the current isolator and thus practically no external effect. Surprisingly, the external effect is almost completely prevented, even if there is no additional one
    Extinguishing agent is present in the isolator.
    Arc produced.
    According to a preferred embodiment, metallic filter elements are located on both sides of the piston below the busbar, so that the circuit board electrically connects the filter elements during activation. Thus, the current flows through both filter elements and the circuit board during the separation process. The energy from the system inductance is distributed
    thus on two filter elements.
    The circuit board can remain between the filter elements after triggering or leave them again. In order to ensure galvanic separation after tripping, it is only expedient to remain between the filter elements if at least one filter element is electrically isolated from the busbar in the non-tripped state.
    To improve the extinguishing effect, according to one embodiment of the invention, an extinguishing agent is additionally provided in the circuit breaker. The extinguishing agent is preferably a silicon compound, in particular a silicone oil or a
    silicone-containing grease.
    It is advantageous if there are recesses in the housing between the busbar and the filter elements. Such recesses in the housing prevent the arc from being squeezed by the cutting punch, so that the energy from the system inductance is converted into heat loss in the
    Filter elements is not affected.
    A particular advantage of the invention is that the housing can be sealed because the pressure increase is only slight. The external effect is enhanced by the sealing
    reduced. Thus, the filter elements compared to the
    can.
    If at least one further filter element is provided on the side of the busbar, the cooling effect is the
    Filter elements even more reinforced.
    The filter element or the filter elements are preferably made of stainless steel, in particular in the form of a knitted metal fabric. In the case of knitted metal, the contact of the filter elements through the plate is particularly easy to achieve. The knitted metal can protrude slightly into the cavity and is either pushed back elastically by the plate
    or sheared off. In both cases there is good contact.
    Current isolators of this type can safely interrupt currents up to 23kA and voltages up to 1000V.
    The present invention is explained in more detail with reference to the accompanying drawings. It shows: FIG. 1 a longitudinal section through a circuit breaker according to the invention in the non-tripped state in a plane which contains the busbar; Fig. 2 shows a section along the line II-II of Fig. 1; Fig. 3 shows a section along the line III-III of Fig. 1; Fig. 4 shows a section along the line IV-IV of Fig. 3; FIG. 5 shows a view of the current isolator analogous to FIG. 1, the current isolator being in the tripped state; and
    6 shows the current isolator in a perspective view.
    The housing of the current isolator is formed by an upper part 11 and a lower part 12. The lower part 12 is supported by a lower support ring 20, which holds and reinforces the lower part 12. Upper part 11 and lower part 12 are firmly connected to one another, e.g. screwed. The upper part 11 is reinforced by a reinforcing element 24. Between the upper part 11 and the lower part 12 there is a busbar 18
    Busbar 18 securely fixed in the housing even after triggering
    In the upper part there is an igniter 13 which - when it is ignited - pressurizes a piston 14. The piston 14 is movable in a cavity 25. This cavity 25 is located partly in the upper part 11 and partly in the lower part 12. Initially, the piston 14 is located completely in the upper part 11, i.e. above the conductor rail 18.If it is pressurized, it moves at least partially into the cavity 25 in the lower part ( see FIG. 5), where he is punching a circuit board 19 out of the busbar 18.
    Below the busbar 18 there are two filter elements 16, 16 '. In between there is an insulating plate 15 which ensures that there is no electrical contact between the busbar 18 and the filter elements 16, 16 ′.
    The predetermined breaking points specified by reducing the thickness of the busbar 18 are encapsulated by an overmolding 17, which means that the arc that occurs during the current separation can only exit from the predetermined breaking point to the circuit board 19. In contrast to this, the exit point in the known current isolators moves to the lower edge of the busbar 18.
    At the lower end of the cavity 25 there is further filter material 21, 22, which serves as a stop and as a heat sink. A braking element 23 is provided above or around it, which retards the downward movement of the plate 19 or the piston 14, resulting in an adaptation of the change in current
    and the resulting induced voltage.
    Laterally next to the busbar 18 are further filter elements 16 ″, 16 ″ ″ (see FIGS. 3 and 4), which as
    serve additional heat sink.
    The current isolator according to the invention works as follows:
    First short-range arcs form between
    The purpose is to use the filter elements 16, 16 'as load resistors and the inductive energy of the circuit in the filter elements 16, 16' in heat
    to convert.
    The circuit board 19 can be brought to a standstill at the level of the lower edge of the filter elements 16, 16 'and can remain in contact with the filter elements 16, 16'. Since the filter elements 16, 16 'are galvanically separated from the remains of the busbar 18 by the insulating plate 15, the circuit is nevertheless securely separated after the arc has been extinguished. The board 19 can, however - as shown in the exemplary embodiment, also move further downwards. In this case, form
    - after the circuit board 19 has left the filter elements 16, 16 'again - two more arcs which are lengthened by the movement of the circuit board 19.
    If the inductive energy is consumed, the arcs are extinguished by clamping between the extrusion coating 17 and the piston 14. In this state there is no conductive connection between the
    two connections of the busbar 18.
    The filter elements can - as shown in the exemplary embodiment - have a connection to the environment and can thus be used for filtering and cooling any excess pressure that escapes. In a particularly preferred embodiment, however, they have no connection to the outside in order to minimize the external effect. The overpressure is then only created by the filter elements 16, 16 ', 16 "and 16"' and the further filter material 21, 22
    recorded.
    权利要求:
    Claims (1)
    [1]
    Telephone: £ +43 (1) 512 24 81 / Fax: 3 + 43 (1) 513 76 81 / E-Mail: £ & 7 repatent@aon.at
    Account (PSK): 1480 708 BLZ 60000 BIC: OPSKATWW IBAN: AT19 6000 0000 0148 07081 480 708
    Hirtenberger Automotive Safety GmbH & Co KG A-2552 Hirtenberg (AT) Patent claims 1. Circuit breaker with a busbar (18) and a piston
    (14), which can be moved in a cavity (25) penetrated by the busbar, for breaking out a circuit board (19) from the busbar (18), the current isolator having at least one metallic filter element (16), characterized in that the filter element (16) extends to the cavity (25).
    2. Current separator according to claim 1, characterized in that the filter element (16) is electrically isolated from the busbar (18) in the non-triggered state.
    3. Circuit breaker according to claim 1 or 2, characterized in that there are metallic filter elements (16, 16 ') on both sides of the piston (14) below the busbar (18), so that the circuit board (19) the filter elements ( 16, 16 ')
    electrically connects.
    4. Current isolator according to claim 3, characterized in that the circuit board (19) remains after the triggering between the filter elements (16, 16 ') or leaves them again.
    5. Current disconnector according to one of claims 1 to 4, characterized in that in addition a
    Extinguishing agent is provided.
    6. Power isolator according to claim 5, characterized in that
    the extinguishing agent is a silicon compound.
    11.
    12th
    Circuit breaker according to Claim 6, characterized in that the extinguishing agent is a silicone oil or a silicone-containing fat.
    Circuit breaker according to one of Claims 1 to 7, characterized in that there are recesses in the housing between the conductor rail (18) and the filter elements (16, 16 ')
    are located.
    Current isolator according to one of Claims 1 to 8, characterized in that the housing is sealed.
    Current separator according to one of claims 1 to 9, characterized in that the filter elements (16, 16 ') opposite
    isolated from the outside world.
    Circuit breaker according to one of Claims 1 to 10, characterized in that at least one further filter element (16 '', 16 '' ') on the side of the busbar (18)
    is provided.
    Circuit breaker according to one of Claims 1 to 11, characterized in that the filter element or the filter elements (16, 16 ', 16' ', 16' '"'") are formed from stainless steel, in particular in the form of a knitted metal
    are.
    类似技术:
    公开号 | 公开日 | 专利标题
    DE3302884C2|1988-01-21|
    EP3046124A1|2016-07-20|Switch and protective device for high voltage on-board networks
    WO2021007604A1|2021-01-21|Current breaker
    DE2045173A1|1971-10-07|Electrical contact material
    EP1537588A1|2005-06-08|Switch contact arrangement with an erosion display for the switch contacts
    DE1640236A1|1970-08-13|Vacuum switch
    CH662903A5|1987-10-30|GAS-INSULATED LOAD DISCONNECTOR.
    DE102012215479B4|2014-08-21|Method for closing a switch and switch for carrying out the method
    DE2734395C3|1986-02-20|Device for current limitation
    EP3025361B1|2018-03-07|Switching device with electromagnetic arc deflection
    DE19727696A1|1998-12-24|Movable switch contact mechanism for LV circuit-breaker
    DE60101996T3|2010-12-09|Vacuum switch tube
    DE10144440C1|2002-08-29|Switching contact arrangement with a device for amplifying a contact force acting between switching contacts
    EP3469611B1|2022-02-23|Contact assembly for a high-voltage switchgear, and use and production thereof
    DE604649C|
    DE102015119352A1|2017-05-11|ELECTROMECHANIC PROTECTION SWITCH
    DE3432025A1|1986-03-13|Switching apparatus, especially for switching high-power current loads on and off
    DE102019209745B4|2021-02-11|Electrical switching system and circuit breaker
    AT521150B1|2019-11-15|Pyrotechnic current separator
    DE102006008480B4|2007-11-08|separator
    DE102019117804B4|2021-08-12|Switching device with an electrical contact system
    DE1916094C3|1980-08-07|Switch disconnector
    CH662002A5|1987-08-31|SWITCHING APPARATUS WITH A DEVICE FOR CONTROLLING THE MOVEMENT OF AN ARC CONTACT OF THE SWITCHING APPARATUS.
    EP0135789B1|1989-07-05|High-voltage isolating switch, in particular a pantograph isolating switch able to make or break currents
    DE202017006802U1|2018-07-17|High speed circuit breakers for industrial and rail vehicle applications
    同族专利:
    公开号 | 公开日
    WO2021007604A1|2021-01-21|
    AT522735B1|2021-03-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1168996B|1961-03-27|1964-04-30|Westinghouse Electric Corp|Compressed gas switch with filter|
    DE102018125059A1|2017-10-11|2019-04-11|Key Safety Systems, Inc.|High voltage electric line cutter device|
    US5990572A|1997-02-28|1999-11-23|Harness System Technologies Research, Ltd.|Electric circuit breaker for vehicle|
    EP1447640B1|2003-02-04|2007-12-05|Delphi Technologies, Inc.|Pyro-mechanical breaker|
    US10424448B2|2016-02-04|2019-09-24|Tesla, Inc.|Pyrotechnic disconnect with arc splitter plates|
    DE202018100728U1|2018-02-09|2018-02-21|Peter Lell|Breaker with main and shunt paths|AT523708B1|2020-04-16|2021-11-15|Hirtenberger Automotive Safety Gmbh & Co Kg|Pyrotechnic current isolator and process for its manufacture|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50635/2019A|AT522735B1|2019-07-12|2019-07-12|Isolator|ATA50635/2019A| AT522735B1|2019-07-12|2019-07-12|Isolator|
    PCT/AT2020/060268| WO2021007604A1|2019-07-12|2020-07-10|Current breaker|
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