EP3987660A1 - Dispositif de sécurité pour interrupteur électronique et système électrique comportant un tel dispositif - Google Patents
Dispositif de sécurité pour interrupteur électronique et système électrique comportant un tel dispositifInfo
- Publication number
- EP3987660A1 EP3987660A1 EP20733483.0A EP20733483A EP3987660A1 EP 3987660 A1 EP3987660 A1 EP 3987660A1 EP 20733483 A EP20733483 A EP 20733483A EP 3987660 A1 EP3987660 A1 EP 3987660A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switch
- output terminal
- terminal
- input terminal
- current
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
- H03K17/6871—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors the output circuit comprising more than one controlled field-effect transistor
- H03K17/6874—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors the output circuit comprising more than one controlled field-effect transistor in a symmetrical configuration
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K17/081—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
- H03K17/0814—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit
- H03K17/08142—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit in field-effect transistor switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/74—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of diodes
-
- 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
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/0054—Gating switches, e.g. pass gates
Definitions
- Safety device for electronic switch and electrical system comprising such a device
- the present invention relates generally to a safety device for an electrical system in a motor vehicle.
- the invention relates to an electrical system comprising a safety device intended to control a switch device allowing the dissipation of a discharge current generated by a parasitic inductance during the disconnection of electrical equipment from the device. electrical network of the motor vehicle.
- the safety device also makes it possible to filter electrical disturbances superimposed on the vehicle's electrical network so as to prevent any untimely triggering of the switch device.
- Electric or hybrid vehicles are equipped with an electrical power supply network supplying all the electrical equipment such as an alternator-starter or direct voltage converter, a switch device connected between the power source and electrical equipment so as to disconnect them from the electrical network.
- the connections between the various electrical equipment require long cable lengths, thus generating parasitic inductances and also overvoltages.
- a known problem is that of the dissipation of an electric current contained in the parasitic inductance during the disconnection of electrical equipment from the electrical network of the motor vehicle.
- Such an electrical system SE1 comprises a safety device 40 comprising:
- a main output terminal B intended to be connected to a first electrical device Ep1 and to a second electrical device Ep2, c. a switch device 100 comprising an input terminal E, an output terminal S and a control terminal G, the input terminal of the switch device 100 being connected to the main input terminal A, the terminal output of the switch device 100 being connected to the main output terminal B, said switch device 100 comprising at least a first switch Q1 and a second switch Q2, the control terminal G of said switch device 100 being connected to a control device 30 so as to open or close the first switch Q1 or the second switch Q2 d. a TVS protection device connected between the current output terminal S and the electrical ground;
- the safety device comprises a component for suppressing transient voltage (from the English "transient-voltage-suppressor" or TVS, such as a diode arranged to pass in reverse mode (avalanche mode) allows the excess current to be injected to the electrical ground so as to cut off the switch voltage.
- TVS components have the particularity of presenting an avalanche voltage beyond which the TVS component absorbs the excess current and suppresses the overvoltage.
- the TVS component being placed between the electrical equipment and the battery, the TVS components must be dimensioned for an avalanche voltage greater than the battery voltage, which can reach several hundred volts.
- a voltage of the order of a hundred volts can irreversibly damage electrical equipment.
- the TVS component requires a connection to the electrical ground, which brings an additional mechanical constraint during implementation in a motor vehicle.
- the aim of the invention is to alleviate at least in part the aforementioned problems.
- a safety device comprising:
- a main output terminal intended to be connected to a first electrical equipment item and to a second electrical equipment item
- a switch device comprising an input terminal, an output terminal and a control terminal, the input terminal of the switch device being connected to the main input terminal, the output terminal of the control device switch being connected to the main output terminal, said switch device comprising at least a first switch, the control terminal of said switch device being intended to be connected to a control device so as to open or close the switch. minus a first switch, and d. a protection device connected between the main input terminal A and the main output terminal B,
- said safety device being characterized in that said protection device is controlled in the on state so as to create a current path crossed by a discharge current in parallel with the switch device when the control device controls said device. switch in the open state and when the parasitic inductance between the first and the second electrical equipment is crossed by the discharge current.
- the protection device is remarkable in that it is connected in parallel with the switch device, between the battery and the electrical equipment, requiring no connection to the electrical ground.
- the protection device is also remarkable in that it comprises at least one transient voltage suppression diode, the avalanche voltage of which is lower than the battery voltage. The dissipation of the discharge current of the parasitic inductance is achieved by the protection device when the switch control device is inactive, while avoiding the re-conduction of the switch device.
- the protection device connected in parallel with the switch device dissipates the discharge current when it is controlled to the on state, making it possible to protect electrical equipment against overvoltages.
- the transient suppressor diode is no longer connected to electrical ground, and it is no longer necessary to use a transient suppressor diode whose avalanche voltage is greater than the battery voltage.
- the parasitic inductance is created by the electrical connection between the first electrical equipment and the second electrical equipment.
- the protection device is intended to be controlled in the state through said control device.
- the protection device is intended to be controlled in the on state by the control device when the control device controls the switch device in the open state so that a discharge current generated by said inductor passes through the current path.
- the protection device is intended to be controlled in the open state by the control device so as to open the current path when the value of the discharge current becomes less than one. threshold, for example positive, or when the discharge current is canceled.
- the control device is intended to be connected to the control terminal of the switch device via a first resistor.
- the safety device comprises the first resistance.
- the first switch comprises: a. a current input terminal connected to the input terminal of the
- the switch device comprises:
- a first switch comprises: i. a current input terminal connected to the input terminal of the switch device
- the protection device comprises:
- a third switch comprising a current input terminal, a current output terminal and a control terminal, said current input terminal being connected to the main input terminal;
- a first transient voltage suppression diode including
- the anode is connected to the main output terminal and the cathode is connected to the output terminal of the third switch.
- the switch device further comprises a second switch, the output terminal of said first switch being connected to the output terminal of the switch device through said second switch.
- the second switch comprises:
- control terminal of the switch device is intended to be connected to a control device so as to open or close at least a first switch and the second switch.
- the protection device further comprises a second transient voltage suppression diode, the cathode of the first transient voltage suppression diode is connected to the cathode of said second suppression diode of transient voltages and the anode of the second transient suppressing diode is connected to the current output terminal of the third switch.
- the switch device comprises a first switch and a second switch
- said first switch comprising:
- a control terminal is connected to the control terminal of the switch device.
- said second switch comprising:
- the protection device comprises:
- a third switch comprising a current input terminal, a current output terminal and a control terminal, said current input terminal being connected to the main input terminal;
- a first transient voltage suppression diode including
- the anode is connected to the main output terminal and the cathode is connected to the cathode of a second transient voltage suppression diode
- a second transient voltage suppression diode including
- the anode is connected to the current output terminal of the third switch.
- the protection device comprises:
- a third switch comprising a current input terminal, a current output terminal and a control terminal, said current input terminal being connected to the main input terminal, b. a first transient voltage suppression diode, the anode of which is connected to the main output terminal, and
- a second transient suppression diode the anode of which is connected to the current output terminal of the third switch and the cathode of which is connected to the cathode of the first transient suppression diode.
- control terminal of the third switch is intended to be connected to the control device so as to open or close said third switch.
- the third transistor is intended to be controlled in the closed state by the control device so as to create said current path.
- the third transistor is intended to be controlled in the open state by said control device so as to open said current path.
- the third transistor is intended to be controlled in the open state by the control device so as to eliminate said current path when the discharge current vanishes or becomes less than first threshold.
- the third transistor is intended to be controlled to the open state by the control device when the discharge current vanishes or falls below the first threshold.
- control device is intended to be connected to the control terminal of the third switch via a second resistor.
- the switch (s) of the switch device are MOSFET transistors, or IGBT transistors, or even bipolar transistors.
- control terminal of the switch device is intended to be connected to a control device so as to open or close the first switch and the second switch.
- the switches are transistors using silicon (Si) technology, or gallium nitride (GaN) technology, or even silicon carbide (SiC) technology.
- the invention also relates, according to a second aspect, to a voltage converter comprising a safety device according to the first aspect of the invention
- the voltage converter is a DC-DC voltage converter or an AC-DC voltage converter
- the protection device and the voltage converter according to the invention have in combination all or part of the aforementioned characteristics.
- FIG. 1 shows an electrical system comprising a safety device according to the prior art.
- FIG. 2 shows an electrical system comprising a safety device implementing the invention according to a first embodiment of the invention.
- FIG. 3 shows an electrical system comprising a safety device implementing the invention according to a second embodiment of the invention.
- the electrical system SE2 is for example integrated into an electrical network of a motor vehicle.
- the SE2 electrical system comprising:
- a safety device 2 comprising:
- a main input terminal A connected to a first DC voltage source BAT, for example a battery supplying a voltage of 48V.
- a main output terminal B connected to the first electrical equipment Ep1 and second electrical equipment Ep2.
- a switch device 10 comprising:
- a control terminal G connected to a control device 30 via a resistor R iv. a protection device 20 connected between the main input terminal A and the main output terminal B
- the first and second electrical equipment Ep1 and Ep2 are, for example, alternator-starter or voltage converter such as an inverter.
- the first electrical equipment Ep1 is connected to the electrical ground and has a voltage Vep1 between its terminals
- the second electrical equipment Ep2 is connected to the electrical ground and has a voltage Vep2 between its terminals.
- the switch device 10 comprises a first switch Q1, the drain current input terminal of the first switch Q1 is connected to the input terminal E, the current output terminal s1 of the first switch Q1 is connected to output terminal S and control terminal g1 is connected to control terminal G.
- control device 30 controls the opening or closing of the first switch Q1.
- a current I being able to flow in the direction of the input terminal E towards the output terminal S when the control device 30 controls the first switch Q1 on closing, no current passing through the input terminal E towards the terminal of output S when the control device 30 controls the first switch Q1 on opening.
- the value of the first resistor R1 connected between the control circuit 30 and the control terminal G is chosen so as to protect the control circuit 30.
- the first and second electrical equipment Ep1 and Ep2 are supplied with electrical energy when the first switch Q1 is commanded to close by the control device 30.
- the state of the first switch Q1 being in a saturated state when 'it is commanded to close, and in the blocked state when the switch Q1 is commanded to open.
- the protection device 20 comprises in the example considered:
- a third switch Q3 comprising a current input terminal d3 being connected to the main input terminal A, an output terminal in current s3 and a control terminal g3 being connected to the control circuit 30 through a second resistor R2; b.
- a first transient voltage suppression diode Tvs1, the anode of which is connected to the main output terminal B and the cathode is connected to the output terminal s3 of the third switch Q3
- the parasitic inductance L when the control device 30 controls the first switch Q1 on closing, the parasitic inductance L is crossed by the current I.
- the parasitic inductance L When the control device 30 controls the first switch Q1 on opening, the parasitic inductance L generates a discharge current Id resulting from the current I and a voltage at its terminals, which has the effect of creating an overvoltage between the output terminal S and the input terminal E of the switch system 10.
- the discharge current Id flowing from the main input terminal A to the main output terminal B.
- the protection device 20 is connected in parallel with the switch device 10 between the first DC voltage source BAT and the first and second electrical equipment Ep1 and Ep2 so as to avoid a connection to the electrical ground.
- the protection device 20 then makes it possible to avoid an overvoltage when opening the first switch Q1 and therefore to prevent the voltage between the output S and input E terminals from exceeding a predetermined threshold.
- the voltage between the output terminal S and the input terminal E is the switch voltage Vds of the first switch Q1.
- the switch controller 30 controls the first switch Q1 on opening, the switch controller 30 controls the third switch Q3 on closing. The third switch Q3 for switching to the on state the protection device 20.
- the overvoltage caused by the opening of the first switch Q1 is limited by the protection device 20, the first transient voltage suppression diode Tvs1 allowing the clipping of the overvoltage and the dissipation of the discharge current Id.
- the voltage Vb being the voltage at the terminals of the electrical equipment is equal to the avalanche voltage of the component Tvs1 plus the battery voltage Vbat.
- the first transient voltage suppression diode Tvs1 being chosen so that its avalanche voltage is of the order of several tens of volts, the voltage Vb at the terminals of the electrical equipment is thereby reduced compared to the electrical system SE1 by the prior art which uses a transient voltage suppression diode Tvs of several hundred volts.
- the overvoltage at the terminals of the electrical equipment of the SE2 system is reduced by 50% compared to the safety device 40 of the SE1 electrical system of the prior art.
- the switch control circuit 30 makes it possible to switch the third switch Q3 to the on state and therefore to activate the protection device 20 when the first switch Q1 is opened.
- the selective activation of the protection device 20 by the third switch Q3 makes it possible to choose a first transient voltage suppression diode Tvs1 having a lower avalanche voltage than those used in the electrical system SE1 of the prior art, and thus reduce the overvoltage at the terminals of electrical equipment Ep1 and Ep2.
- the selective activation of the protection device 20 by the third switch Q3 also makes it possible to prevent the re-conduction of the first transient voltage suppression diode Tvs1, the battery voltage being greater than the avalanche voltage of the first transient voltage suppression diode Tvs1.
- the switch control circuit 30 controls the third switch Q3 of the protection device 20 on opening so as to make inactive the protective device 20.
- the electrical system SE3 comprises:
- Safety device 3 comprising:
- the switch device 100 includes a first switch Q1 and a second switch Q2 connected "head-to-tail", in other words the first switch Q1 and the second switch Q2 are connected so-called "common source”.
- the first switch Q1 and the second switch Q2 are N doped MOSFETs.
- the current input terminal d1 of the first switch Q1 is connected to the input terminal E
- the current output terminal s1 of the first switch Q1 is connected to the current output terminal s2 of the second switch Q2 and the control terminal g1 is connected to the control terminal G
- the current input terminal d2 of the second switch Q2 is connected to the output terminal S
- the control terminal g2 is connected to the control terminal G.
- the control device 30 makes it possible to control the opening of the first switch Q1 and of the second switch Q2 and therefore to interrupt any flow of current in both directions between the input terminal E and the output terminal S.
- the protection device 200 further comprises in the example considered:
- a third switch Q3 comprising a current input terminal d3 being connected to the main input terminal A, an output terminal in current s3 and a control terminal g3 being connected to the control circuit 30 through a second resistor R2; b.
- a first transient voltage suppression diode Tvs1, the anode of which is connected to the main output terminal B and the cathode is connected to the cathode of a second transient voltage suppression diode Tvs2;
- the control device 30 is able to control the opening or closing of the first switch Q1 and the second switch Q2.
- the current I is said to be positive when the DC voltage source BAT supplies the current I, the current I flowing through the switch device 100 in the direction of the input terminal E towards the output terminal S so as to supply the first Ep1 or the second Ep2 electrical equipment.
- the current I is said to be negative when the first Ep1 or the second Ep2 electrical equipment supply the current I, the current I flowing through the switch device 100 in the direction of the output terminal S towards the input terminal E so as to supply the DC voltage source BAT.
- the parasitic inductance L When opening the first switch Q1 or the second switch Q2, the parasitic inductance L generates a discharge current Id and a voltage at its terminals, which has the effect of creating an overvoltage between the output terminal S and the input terminal E of the switch system 100. Indeed, the voltage Vbat - Vb is directly applied to the voltage between the input terminal E and the output terminal S.
- the protection device 200 therefore makes it possible to limit an overvoltage during the opening of the first switch Q1 or of the second switch Q2, therefore to control the overvoltage and ensure that the voltage between the output S and input terminals E does not exceed a predetermined threshold.
- the protection device 200 also makes it possible to dissipate the discharge current Id, whether in the positive or negative direction.
- the first and second transient voltage suppression diodes Tvs1 and Tvs2 can be replaced by a single so-called "bidirectional" transient voltage suppression diode, in other words, the bidirectional transient voltage suppression diode makes it possible to d 'clipping a surge and dissipating the discharge current Id, whether the discharge current Id is positive or negative.
- the selective activation of the protection device 200 by the third switch Q3 also making it possible to prevent the re-conduction of the first and second transient voltage suppression diodes Tvs1 and Tvs2, the battery voltage being greater than the voltage d avalanche of the first transient voltage suppression diode Tvs1 or of the second transient voltage suppression diode Tvs2.
- the switch control circuit 30 When the magnetic energy contained in the inductor L is dissipated, the discharge current Id is canceled in the first suppression diode. transient voltages Tvs1 or in the second transient voltage suppression diode Tvs2, the switch control circuit 30 then controls the third switch Q3 of the protection device 200 on opening so as to make the protection device 200 inactive.
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Safety Devices In Control Systems (AREA)
- Protection Of Static Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1906833A FR3097698B1 (fr) | 2019-06-24 | 2019-06-24 | Dispositif de sécurité pour interrupteur électronique et système électrique comportant un tel dispositif |
| PCT/EP2020/067533 WO2020260301A1 (fr) | 2019-06-24 | 2020-06-23 | Dispositif de sécurité pour interrupteur électronique et système électrique comportant un tel dispositif |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3987660A1 true EP3987660A1 (fr) | 2022-04-27 |
Family
ID=67742835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20733483.0A Pending EP3987660A1 (fr) | 2019-06-24 | 2020-06-23 | Dispositif de sécurité pour interrupteur électronique et système électrique comportant un tel dispositif |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3987660A1 (fr) |
| CN (1) | CN114008922A (fr) |
| FR (1) | FR3097698B1 (fr) |
| WO (1) | WO2020260301A1 (fr) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19811297B4 (de) * | 1997-03-17 | 2009-03-19 | Fuji Electric Co., Ltd., Kawasaki | MOS-Halbleitervorrichtung mit hoher Durchbruchspannung |
| US7741883B2 (en) * | 2008-05-21 | 2010-06-22 | Honeywell International Inc. | Method of switching and switching device for solid state power controller applications |
| US9755630B2 (en) * | 2009-04-30 | 2017-09-05 | The United States of America as represented by the Secretary of the Government | Solid-state circuit breakers and related circuits |
| US9508841B2 (en) * | 2013-08-01 | 2016-11-29 | General Electric Company | Method and system for a semiconductor device with integrated transient voltage suppression |
-
2019
- 2019-06-24 FR FR1906833A patent/FR3097698B1/fr active Active
-
2020
- 2020-06-23 EP EP20733483.0A patent/EP3987660A1/fr active Pending
- 2020-06-23 CN CN202080045818.9A patent/CN114008922A/zh active Pending
- 2020-06-23 WO PCT/EP2020/067533 patent/WO2020260301A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR3097698B1 (fr) | 2021-07-02 |
| WO2020260301A1 (fr) | 2020-12-30 |
| FR3097698A1 (fr) | 2020-12-25 |
| CN114008922A (zh) | 2022-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0854555B1 (fr) | Protection d'alimentation intégré | |
| US8164874B2 (en) | Overvoltage protection device for an electrical circuit | |
| FR2988931A1 (fr) | Dispositif de commande employe dans un systeme d'alimentation electrique a decoupage | |
| EP2546974A1 (fr) | Convertisseur de puissance comportant un module onduleur à transistors à effet de champ normalement fermés | |
| US7961486B2 (en) | Capacitive power supply system | |
| FR2786629A1 (fr) | Circuit de commande d'un interrupteur a composants semiconducteurs fonctionnant en alternatif | |
| WO2020229490A1 (fr) | Dispositif de securite autonome et systeme electrique comportant un tel dispositif | |
| EP4456362A1 (fr) | Circuit de protection contre les surtensions | |
| EP3987660A1 (fr) | Dispositif de sécurité pour interrupteur électronique et système électrique comportant un tel dispositif | |
| EP3244535A1 (fr) | Système d'interrupteur et convertisseur électrique comportant un tel système d'interrupteur | |
| FR2483141A1 (fr) | Installation de charge de batterie | |
| EP2306608A2 (fr) | Circuit de protection contre la foudre à deux étages | |
| FR2832261A1 (fr) | Dispositif de protection de charges alimentees par un alternateur | |
| FR3064418A1 (fr) | Dispositif de protection contre les surtensions | |
| EP3800775A1 (fr) | Circuit de regulation en tension et module d'alimentation regulee | |
| EP0063974B1 (fr) | Dispositif pour créer une source de tension alternative avec régulation pour une alimentation de puissance à partir d'une source de courant alternatif du réseau | |
| EP2822131A2 (fr) | Dispositif et procédé de protection contre des courants de fuite | |
| EP4085529B1 (fr) | Dispositif de pré-charge et convertisseur de tension comportant un tel dispositif | |
| FR2833113A1 (fr) | Convertisseur de courant electrique continu en courant continu reversible pour reseau bitension et reseau bitension equipe d'un tel convertisseur | |
| US9401708B2 (en) | Gate drive unit and method for controlling a gate drive unit | |
| FR3157722A1 (fr) | Circuit electrique avec convertisseur de tension et circuit de demarrage | |
| EP3794700B1 (fr) | Circuit de protection d'un interrupteur | |
| FR3112436A1 (fr) | Dispositif de protection d’un circuit de distribution d’une énergie électrique | |
| EP1196994B1 (fr) | Procede de protection des semi-conducteurs de puissance d'un convertisseur de puissance et convertisseur mettant en oeuvre ce procede | |
| RU2274887C1 (ru) | Блок защиты от перенапряжения в цепях электропитания |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20211212 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230528 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: VALEO ELECTRIFICATION |