EP3963686A1 - Asymmetrische überspannungsschutzvorrichtung, gleichstromschaltungsanordnung sowie gleichstromnetz - Google Patents
Asymmetrische überspannungsschutzvorrichtung, gleichstromschaltungsanordnung sowie gleichstromnetzInfo
- Publication number
- EP3963686A1 EP3963686A1 EP20724063.1A EP20724063A EP3963686A1 EP 3963686 A1 EP3963686 A1 EP 3963686A1 EP 20724063 A EP20724063 A EP 20724063A EP 3963686 A1 EP3963686 A1 EP 3963686A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- negative
- protection device
- overvoltage protection
- direct current
- positive
- 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.)
- Pending
Links
- 230000001681 protective effect Effects 0.000 claims description 47
- 230000015556 catabolic process Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 230000005669 field effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. DC/AC converters
Definitions
- the invention relates to an asymmetrical overvoltage protection device, a direct current circuit arrangement and a direct current network.
- an asymmetrical overvoltage protection device for a direct current circuit having a current input and a current output, with a negative side that can be connected to the current output of the direct current circuit, a positive side that can be connected to the current input of the direct current circuit, and an asymmetrical protective path.
- the asymmetrical protective path has a positive protective level for a positive voltage between the positive side and the negative side and a negative protective level for a negative voltage between the positive side and the negative side, the positive protective level being different from the negative protective level.
- the overvoltage protection can be implemented asymmetrically will. In this way, positive and negative overvoltages can be treated separately, whereby the asymmetry of the direct current circuit or the electrical device and thus the asymmetrical sensitivity to overvoltages is taken into account.
- the negative protection level can be smaller than the negative freewheeling voltage of the DC circuit.
- the DC circuit has no reverse polarity protection.
- the plus side is also called “DC-Plus” or “L +” for unipolar direct current.
- the minus side of unipolar direct current is also called “DC minus” or “L-”.
- the protective section has a dissipative component and the overvoltage protection device has a control for the protection section, the control being designed in such a way that it releases the dissipating component accordingly when the voltage between the plus side and the minus side is positive and the amount of the voltage is above the positive protection level or if the voltage is negative and the amount of the voltage is above the negative protection level.
- the control makes it possible to adapt the protection level flexibly.
- the dissipating component can in particular be loaded with impulses.
- the dissipating component can have a spark gap, a gas discharge tube, a varistor, a thyristor, an IGBT and / or a MOSFET and / or the control can have at least one diode, one IGBT, one thyristor and / or one Have MOSFET.
- the protective path has a positive dissipative branch for reducing a positive voltage and a negative dissipating branch for reducing a negative voltage, in particular with the branches being parallel.
- the construction of the protective section can be implemented using simple components.
- the positive dissipating branch has a first passive dissipating component, in particular a varistor, a spark gap and / or a gas discharge tube.
- the positive derivative branch can be completely passive.
- the dissipating component can be loaded with impulses.
- the breakdown voltage or threshold voltage of the positive dissipating component is the positive protection level.
- the negative discharge branch has a switchable component and the overvoltage protection device has a control for the switchable component, in particular the switchable component being an IGBT (bipolar transistor with insulated gate electrode), a thyristor or a MOSFET (metal-oxide-semiconductor Field effect transistor).
- the control is designed such that it switches the switchable component accordingly when the voltage between the plus side and the minus side is negative and the amount of the voltage is above the negative protection level. In this way, the negative protection level can be flexibly adjusted.
- the negative dissipative branch only has the switchable component.
- the negatively discharging branch has a further component such as a spark gap, a gas discharge tube and / or a varistor.
- the negative dissipating branch has at least one second passive dissipating component, in particular the negative dissipating branch being completely passive, as a result of which the overvoltage protection device can be made particularly simple.
- the second passive dissipative component can, for example, be loaded with impulses.
- the forward voltage or the lock voltage of the second passive dissipative component for the negative voltage can be the negative protection level.
- the breakdown voltage for the positive voltage is greater than the positive protection level.
- the entire protective section has no active or switching components.
- the at least one second passive dissipative component can be a diode or the second passive dissipative component can be a plurality of diodes connected in series.
- the diode or diodes are connected with their cathode to the plus side and with their anode (s) to the minus side.
- the protective path has at least one unipolar suppressor diode, which is connected with its cathode to the positive side and its anode to the negative side, in particular wherein the protective path has several unipolar suppressor diodes connected in parallel.
- the protective section can be implemented with a single or a few components.
- the forward voltage of the suppressor diode (s) is the negative protection level and the breakdown voltage is the positive protection level.
- the positive protection level is greater than 100 V, in particular greater than 400 V, and / or the negative protection level is less than 100 V, as a result of which the direct current circuit is reliably protected.
- the voltage information relates to the amount of voltage.
- the DC circuit can be a converter, in particular an inverter or a DC voltage converter.
- the object is also achieved by a direct current circuit arrangement with a direct current circuit, in particular a converter, such as an inverter or a DC voltage converter, and an asymmetrical overvoltage protection device as described above.
- the direct current circuit has a current input and a current output, and the plus side of the overvoltage protection device is electrically connected to the current input and the minus side of the overvoltage protection device is electrically connected to the current output.
- the overvoltage protection device applies equally to the DC circuit arrangement and vice versa.
- the DC circuit has no reverse polarity protection.
- the direct current circuit arrangement can have a direct current connection, the overvoltage protection device being arranged between the direct current connection and the direct current circuit.
- the object is also achieved by a direct current network with a direct current circuit arrangement as described above and a direct current source with a positive pole and a negative pole.
- the positive pole is electrically connected to the positive side of the overvoltage protection device and the negative pole is electrically connected to the negative side of the overvoltage protection device.
- the direct current network is, for example, a direct current network in a building.
- the overvoltage protection device is arranged between the direct current source and the direct current circuit in order to reliably protect the direct current circuit.
- FIG. 1 shows a block diagram of a direct current network according to the invention with a direct current circuit arrangement according to the invention, which has an asymmetrical overvoltage protection device according to the invention
- Figure 2 shows a block diagram of a second embodiment of an overvoltage protection device according to the invention, a direct current circuit arrangement according to the invention and a power network according to the invention,
- Figure 3 shows a block diagram of a third embodiment of an overvoltage protection device according to the invention, one DC circuit arrangement according to the invention and a power network according to the invention,
- FIG. 4 shows a block diagram of a fourth embodiment of an overvoltage protection device according to the invention, a direct current circuit arrangement according to the invention and a power network according to the invention
- FIGS. 5a to 5c show various embodiments of an overvoltage protection device according to the invention according to FIG. 4
- FIG. 6b shows a block diagram of a possible embodiment of the overvoltage protection device according to FIG. 6a.
- the direct current network 10 is for example a direct current network of a building, a charging infrastructure for electric vehicles or some other direct current network.
- the DC network 10 is unipolar.
- the direct current circuit 16 can be a converter 20 or any other direct current circuit, for example a consumer.
- the direct current source 12 can be any direct current source, which in the context of this invention also includes connections to a higher-level power supply.
- the direct current source 12 has a first pole 21, in the described case of a unipolar direct current source 12 the positive pole 22, and a second pole 23, in this case the negative pole 24.
- first pole 21 and the second pole 23 are also meant in general.
- the direct current circuit 16 is operated by means of the current from the direct current source 12 and accordingly has a current input 26 and a current output 28.
- the direct current circuit 16 has no reverse polarity protection.
- the overvoltage protection device 18 has a plus side 30, a minus side 32 and a protective section 34.
- the plus side 30 and the minus side 32 are connected to one another by means of the protective section 34.
- the plus side 30 and the minus side 32 are each formed by a line that electrically connects the plus pole 22 of the direct current source 12 to the current input 26 of the direct current circuit 16 and the current output 28 of the direct current circuit 16 to the negative pole 24 of the direct current source 12.
- the overvoltage protection device 18 is thus arranged between the direct current source 12 and the direct current circuit 16.
- the DC circuitry 14 has a DC connector 36 connected to the DC power source 12.
- the overvoltage protection device 18 is arranged between the direct current connection 36 and the direct current circuit 16.
- connections of the positive side 30 and the negative side 32 facing the direct current source 12 form the direct current connection 36 of the direct current circuit arrangement 14.
- the direct current source 12 During regular operation of the direct current network 10, the direct current source 12 provides a positive voltage.
- the plus side 30 of the overvoltage protection device 18 is at a higher potential than the minus side 32, so that the voltage V between the plus side 30 and the minus side 32 is positive.
- a positive voltage is used in this case.
- the minus side 32 is at a higher potential than the plus side 30. This situation can occur, for example, in the event of a lightning strike in the direct current network 10.
- the voltage V is negative and in the context of this invention it is referred to as a negative voltage.
- the protective path 34 is now designed such that it provides two different protective levels, namely a positive protective level V p and a negative protective level V n .
- "Different" in this case means different amounts.
- the positive protection level V p relates to positive voltages V and the negative protection level V n relates to negative voltages V.
- the positive protection level V p and the negative protection level V n define the operating range of the direct current circuit 16 by: -V n ⁇ V ⁇ V p .
- the positive protection level V p is greater than 100 V, for example 400 V
- the negative protection level V n is less than 100 V, for example 80 V, so that a safe operating range of -80 V to 400 V results. It is of course also conceivable that the positive protection level V p is greater than 400 V and the negative protection level V n is less than 80 V.
- the direct current circuit 16 is reliably protected against current surges with both positive voltage and negative voltage, the different sensitivities of direct current circuit 16 to negative and positive voltage being taken into account.
- FIGS. 2 to 5 further embodiments of the direct current network 10, the direct current circuit arrangement 14 and the overvoltage protection device 18 are shown and described, which essentially correspond to the first embodiment according to FIG. in the In the following, therefore, only the differences will be discussed and parts that are the same and functionally the same are provided with the same reference symbols.
- the direct current circuit 16 is an inverter 38.
- the protective path 34 has a dissipative component 40 and a control 42 for the dissipative component 40.
- the diverting component 40 can be loaded with current impulses, in particular with a symmetrical protection level for positive and negative voltages.
- the dissipating component 40 is a gas discharge tube, a spark gap or a varistor.
- Controls 42 for dissipative components 40 are well known.
- control 42 has a switching element 44, a diode 45 and a control unit 46 which is set up to control the switching element 44.
- the dissipative component 40 is connected directly to the plus side 30 and by means of the switching element 44 and the diode 45 to the minus side 32.
- the diode 45 and the switching element 44 are arranged in parallel.
- the anode of the diode 45 is connected to the negative side 32 and its cathode is connected to the dissipating component 40.
- the switching element 44 is, for example, an IGBT (bipolar transistor with an insulated gate electrode), a thyristor and / or a MOSFET (metal-oxide-semiconductor field-effect transistor).
- IGBT bipolar transistor with an insulated gate electrode
- MOSFET metal-oxide-semiconductor field-effect transistor
- control unit 46 is connected to the switching element 44, for example to the gate electrode of the switching element 44, and to the plus side 30 and the minus side 32 for measuring the voltage V.
- the control unit 46 measures the voltage V continuously or at regular intervals. If the voltage V measured by the control unit 46 is positive and its magnitude is above the positive protective level V p , the control unit 46 switches the switching element 44 in order to reduce the voltage V via the diverting component 40.
- the positive protection level V p is thus stored in the control unit 46 as a threshold value and can be adapted to the direct current circuit 16.
- the negative protection level V n is provided by the forward voltage of the diode 45. If the voltage V is negative and the amount of the voltage V is above the negative protection level V n , the diode 45 becomes conductive and releases the dissipating component 40. The negative voltage is then reduced via the diode 45 and the dissipating component 40.
- switching element 44 and the diode 45 are arranged between the dissipative component 40 and the plus side 30, as shown in dashed lines in FIG.
- a further switching element 47 is used that is switched by the control unit 46.
- the further switching element 47 can be designed like the switching element 44, but be anti-parallel.
- the control unit 46 switches the further switching element 47 in order to reduce the voltage V via the diverting component 40 if the voltage V measured by the control unit 46 is negative and its magnitude is above the negative protection level V n .
- both the positive and the negative protection level V p , V n can be stored as threshold values in the control unit 46.
- the DC circuit 16 is a DC voltage converter 48, which is shown schematically.
- the DC voltage converter 48 has a half-bridge circuit 50 with two substrate or freewheeling diodes 52, which define a freewheeling voltage VF of the DC voltage converter 48 or the DC circuit 16.
- the direct current circuits 16 all shown exemplary embodiments or all direct current circuits 16 have a freewheeling voltage V F.
- a negative voltage with an amount greater than the freewheeling voltage VF leads to damage to the direct current circuit 16, in particular at high voltages.
- the negative voltage level V n is therefore always selected to be smaller than the freewheeling voltage VF.
- the protective path 34 has a unipolar suppressor diode 54, the cathode of which is connected to the positive side 30 and the anode of which is connected to the negative side 32.
- the forward voltage of the unipolar suppressor diode 54 represents the negative protective level V n and the breakdown voltage of the unipolar suppressor diode 54 represents the positive protective level V p .
- the protective path 34 is completely passive in this third embodiment, since no switching or active components are required. In particular, the protective section 34 contains only one or more unipolar suppressor diodes 54.
- the protective path 34 has two branches running in parallel, namely a positively dissipating branch 56 and a negatively dissipating branch 58.
- the positive dissipating branch 56 is used to dissipate the voltage V if the voltage V is positive
- the negative dissipating branch 58 is used to dissipate the voltage V if the voltage V is negative.
- the positive dissipative branch 56 has, for example, only a first passive dissipative component 60, which can be loaded with current impulses and has a high breakdown voltage which forms the positive protection level V p .
- the breakdown voltage of the first passive dissipative component 60 or of the positive dissipative branch 56 can also be symmetrical.
- the negative dissipative branch 58 is asymmetrical. This means that the breakdown voltage of the negative dissipating branch 58 for positive voltages is above the breakdown voltage of the positive dissipating branch 56. The forward voltage for negative voltages of the negative dissipating branch 58 is, however, significantly lower and represents the protection level V n .
- the forward voltage for negative voltages and thus the negative protection level V n is lower than the free-wheeling voltage VF of the direct current circuit 16 and also less than the symmetrical breakdown voltage of the positive dissipating branch 56.
- FIGS. 5a, 5b and 5c various configurations of the outgoing branches 56, 58 are shown, the combinations of the configurations of the outgoing branches 56, 58 being merely exemplary.
- diverting branches 56, 58 can be combined with one another in any combination in order to form the protective path 34.
- the first passive dissipative component 60 is a varistor 62.
- the negative dissipating branch 58 has a switchable component 64 and the overvoltage protection device 18 has a control unit 66 which forms a control 65 for the switchable component 64.
- the switchable component 64 has a high breakdown voltage for positive voltages and, in particular, can withstand current impulses.
- the negative dissipative branch 58 in particular only has the switchable component 64.
- the switchable component 64 is, for example, an IGBT, a thyristor or a MOSFET.
- control unit 66 is connected to the plus side 30, the minus side 32 and, for control, also to the switchable component 64.
- the control unit 66 measures the voltage V continuously or at regular intervals, and as soon as the voltage V is negative and its magnitude is above the negative protection level V n , the control unit 66 switches the switchable component 64, so that the voltage V via the negative dissipative branch 58 is dismantled.
- the first passive dissipative component 60 is a gas discharge tube 63.
- the negative dissipative branch 58 does not have a switchable component 64, but is designed to be completely passive.
- the negative dissipative branch 58 thus has a second passive dissipative component 68.
- the entire protective path 34 is therefore passive.
- the second passive dissipative component 68 can also be loaded with impulses.
- the numerical word “second” is used here in order to distinguish itself from the first passive dissipative component 60. The use does not imply that the negative dissipative branch 58 also includes a first passive dissipative component.
- the second passive dissipative component 68 is a diode 70 whose cathode is connected to the plus side 30 and its anode to the minus side 32.
- the first passive dissipative component 60 is a spark gap 72.
- the second passive dissipative component 68 comprises a plurality of diodes 74 connected in series.
- any number of diodes 74 may of course be used to achieve the desired breakdown voltage and / or forward voltage.
- FIGS. 6a and 6b A fifth embodiment is shown in FIGS. 6a and 6b.
- the direct current network 10 is not a unipolar direct current network, but a multipolar direct current network, here a bipolar direct current network.
- the direct current source 12 in this embodiment is also a multipolar direct current source 12, here a bipolar direct current source.
- the other components of the direct current network 10 are also multi-pole, in particular the direct current circuit arrangement 14, the direct current circuit 16 and the overvoltage protection device 18.
- the direct current source 12 has, in addition to the first pole 21 and the second pole 23, a third pole 76.
- the first pole 21 is L +, the second pole as L and the third pole 76 as M.
- the third pole 76 can also be referred to as a common zero pole.
- the regular operating voltage between the first pole 21 and the third pole 76 can be 400 V and between the third pole 76 and the second pole 23 can also be 400 V (see FIG. 6b).
- the first pole 21 and the second pole 23 then have a potential difference of 800 V.
- the direct current circuit 16 accordingly has three current inputs or current outputs 26, 27, 80.
- the overvoltage protection device 18 has two protective sections 34 and three sides, namely a third side 78 in addition to the plus side 30 and the minus side 32.
- the first protective section 34 is provided between the plus side 30 and the third side 78 and the second protective section 34 is provided between the minus side 32 and the third side 78.
- the protective paths 34 of this fifth embodiment can be designed in accordance with the preceding embodiments.
- the protective sections 34 correspond to the protective sections of the embodiment according to FIG. 5b.
- all other embodiments are also conceivable.
- the mode of operation of the protective sections 34 of the fifth embodiment is the same as that of the protective section 34 of the previous embodiments.
- the third side 78 corresponds to the minus side of the previous embodiments and for the second protected section 34, the third side 78 corresponds to the plus side.
- direct current circuits 16 can also be reliably protected in multipolar direct current networks 10.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
- Dc-Dc Converters (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019111378.4A DE102019111378A1 (de) | 2019-05-02 | 2019-05-02 | Asymmetrische Überspannungsschutzvorrichtung, Gleichstromschaltungsanordnung sowie Gleichstromnetz |
| PCT/EP2020/062282 WO2020221933A1 (de) | 2019-05-02 | 2020-05-04 | Asymmetrische überspannungsschutzvorrichtung, gleichstromschaltungsanordnung sowie gleichstromnetz |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3963686A1 true EP3963686A1 (de) | 2022-03-09 |
Family
ID=70554056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20724063.1A Pending EP3963686A1 (de) | 2019-05-02 | 2020-05-04 | Asymmetrische überspannungsschutzvorrichtung, gleichstromschaltungsanordnung sowie gleichstromnetz |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12199423B2 (de) |
| EP (1) | EP3963686A1 (de) |
| JP (1) | JP7437416B2 (de) |
| DE (1) | DE102019111378A1 (de) |
| WO (1) | WO2020221933A1 (de) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS548847A (en) * | 1977-06-22 | 1979-01-23 | Hitachi Ltd | Surge protection circuit |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54120847A (en) * | 1978-03-13 | 1979-09-19 | Toshiba Corp | Protective equipment for electronic circuit |
| FR2670339B1 (fr) | 1990-12-07 | 1993-03-12 | Sgs Thomson Microelectronics | Circuit de protection limitant les surtensions entre deux limites choisies et son integration monolithique. |
| DE4039404A1 (de) | 1990-12-10 | 1992-06-11 | Sgs Thomson Microelectronics | Ueberspannungsschutzvorrichtung |
| JPH06245372A (ja) * | 1993-02-19 | 1994-09-02 | Nec Kansai Ltd | 雷サージ保護回路 |
| WO2006050568A1 (en) * | 2004-11-12 | 2006-05-18 | Fultec Semiconductor Inc. | A surge protection device |
| US20080170342A1 (en) * | 2007-01-11 | 2008-07-17 | Denso Corporation | Multistage series circuit system |
| FR2953662B1 (fr) * | 2009-12-03 | 2011-11-18 | Schneider Toshiba Inverter | Convertisseur de puissance a source de courant utilisant des transistors a effet de champ normalement fermes |
| US8390977B2 (en) * | 2010-02-26 | 2013-03-05 | Advanced Energy Industries, Inc | Solar power inverters, including solar power inverters having surge protective devices, and associated methods |
| EP2701256B1 (de) * | 2012-08-22 | 2016-12-21 | Raycap Intellectual Property, Ltd. | Vorrichtungen und Verfahren zum Überspannungsschutz |
| FR3012696A1 (fr) * | 2013-10-25 | 2015-05-01 | St Microelectronics Tours Sas | Circuit de protection contre des surtensions |
| DE102015203269A1 (de) * | 2015-02-24 | 2016-08-25 | Siemens Aktiengesellschaft | Speichersystem zum Speichern elektrischer Energie |
| DE202015102462U1 (de) * | 2015-05-13 | 2015-06-08 | Lisa Dräxlmaier GmbH | Überspannungs-und Verpolschutz für LED-Module im Fahrzeug |
| FR3039014B1 (fr) * | 2015-07-13 | 2019-06-14 | Stmicroelectronics (Tours) Sas | Protection de ligne telephonique contre les surtensions |
| US10050436B2 (en) * | 2015-08-11 | 2018-08-14 | Eaton Intelligent Power Limited | Protection device for an electrical power system |
| DE112016006736T5 (de) | 2016-04-15 | 2019-01-03 | Littelfuse Semiconductor (Wuxi) Co., Ltd. | Überspannungsschutz und linearregler-gerätemodul |
| CN106786459B (zh) | 2016-12-28 | 2020-02-04 | 深圳市槟城电子有限公司 | 浪涌保护电路以及使用该电路的电子装置 |
| DE102017201863A1 (de) * | 2017-02-07 | 2018-08-09 | Seg Automotive Germany Gmbh | Elektrische Maschine mit einer Verpolschutzschaltung |
| FR3064418A1 (fr) * | 2017-03-27 | 2018-09-28 | Stmicroelectronics (Tours) Sas | Dispositif de protection contre les surtensions |
-
2019
- 2019-05-02 DE DE102019111378.4A patent/DE102019111378A1/de active Pending
-
2020
- 2020-05-04 EP EP20724063.1A patent/EP3963686A1/de active Pending
- 2020-05-04 JP JP2021564737A patent/JP7437416B2/ja active Active
- 2020-05-04 US US17/607,195 patent/US12199423B2/en active Active
- 2020-05-04 WO PCT/EP2020/062282 patent/WO2020221933A1/de not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS548847A (en) * | 1977-06-22 | 1979-01-23 | Hitachi Ltd | Surge protection circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102019111378A1 (de) | 2020-11-05 |
| JP2022531857A (ja) | 2022-07-12 |
| JP7437416B2 (ja) | 2024-02-22 |
| US20220224110A1 (en) | 2022-07-14 |
| WO2020221933A1 (de) | 2020-11-05 |
| US12199423B2 (en) | 2025-01-14 |
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