EP3963611A1 - Schalteranordnung mit antriebssystem - Google Patents
Schalteranordnung mit antriebssystemInfo
- Publication number
- EP3963611A1 EP3963611A1 EP20721207.7A EP20721207A EP3963611A1 EP 3963611 A1 EP3963611 A1 EP 3963611A1 EP 20721207 A EP20721207 A EP 20721207A EP 3963611 A1 EP3963611 A1 EP 3963611A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switch
- drive shaft
- switch arrangement
- motor
- control unit
- 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
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0027—Operating mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
- H01H2003/266—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor having control circuits for motor operating switches, e.g. controlling the opening or closing speed of the contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H2009/0061—Monitoring tap change switching devices
Definitions
- the invention relates to a switch arrangement, in particular a step switch arrangement, with a switch, in particular an on-load tap-changer, and a servo drive system for the switch, in particular an on-load tap-changer.
- switches for different tasks and with different requirements. To operate the respective switches, they must be driven by a drive system. These switches are, among other things, on-load tap-changers, diverter switches, selector switches, double-turners, reversers, preselectors, circuit-breakers, load switches or disconnectors.
- On-load tap-changers are used, for example, for uninterrupted switching between different winding taps of electrical equipment, such as a power transformer or a controllable choke.
- electrical equipment such as a power transformer or a controllable choke.
- the transmission ratio of the transformer or the inductance of the choke can be changed.
- Double turners are used to reverse the polarity of windings during operation of the power transformer.
- a switch arrangement is provided with a switch and a servo drive system for the switch.
- the servo drive system has a drive shaft which connects the servo drive system with the switch, a motor for driving the drive shaft, a power unit for supplying energy to the motor, a control unit and a feedback system.
- the feedback system is set up to determine at least two values for an absolute position of the drive shaft and to generate a feedback signal based on the at least two values.
- the control unit is designed as a programmable safety control and is set up to control the power unit as a function of at least one setpoint.
- control unit is set up to act on the operation of the motor as a function of the feedback signal, to identify the presence of at least one safety-relevant event and, in the case of the safety-relevant event, to transmit at least one control signal to the power unit.
- the power unit is set up to initiate or execute at least one safety measure depending on the control signal.
- values for the position of the drive shaft also includes those values of measured variables from which the position of the drive shaft can be clearly determined, possibly within a tolerance range.
- the control device can establish a plausibility of the position determination or a comparison of the two values and thereby increase the reliability of the position determination and reduce the corresponding residual risk of an incorrect position determination.
- a partial failure of the feedback device leads to this, in such a way that only one value can be determined for the position of the drive shaft, not necessarily to the immediate shutdown of the drive shaft.
- At least the switch in particular on-load step switch, diverter switch, selector, double reverser, preselector, circuit breaker, load switch or disconnector, can be moved into a safe operating position in a controlled manner despite the partial failure.
- the operational reliability of the Servoan drive system, the switch, in particular the on-load tap-changer, diverter switch, selector, double turner, reverser, preselector, circuit breaker, load switch or disconnector and the operating equipment is increased.
- the switch is designed as an on-load tap-changer, a diverter switch, a selector, a double turner, a turner, a preselector, a power switch, a load switch or a disconnector.
- the servo drive system serves to drive a shaft of the switch, in particular on-load tap-changer, diverter switch, selector, double reverser, reverser, preselector, circuit breaker, load switch or disconnector, or to drive a corresponding component of the switch, in particular on-load tap-changer, diverter switch, selector, double turner, reverser, preselector, circuit breaker, load switch or disconnector.
- switch in particular an on-load tap-changer, diverter switch, selector, double turner, turner, preselector, power switch, load switch or disconnector, to perform one or more operations, for example a switchover between two winding taps of an item of equipment or parts of the switchover such as one Load switching, a selector activation or a preselector activation.
- the drive shaft is directly or indirectly, in particular special via one or more gears, connected to the switch, in particular the shaft of the switch.
- the drive shaft is connected directly or indirectly, in particular via one or more gears, to the motor, in particular to a motor shaft of the motor.
- a position, in particular an absolute position from the motor shaft corresponds to a position, in particular an absolute position, of the drive shaft. This means that the position of the drive shaft can be clearly deduced from the position of the motor shaft, possibly within a tolerance range.
- the action includes controlling, regulating, braking, accelerating or stopping the motor.
- the regulation can include, for example, position regulation, speed regulation, acceleration regulation or torque regulation.
- the power section is designed as a converter or servo converter or as an equivalent electronic, in particular fully electronic, unit for drive machines.
- control device contains the feedback system in whole or in part.
- the feedback system is set up to determine a first value of the at least two values for the position of the drive shaft according to a first method and to determine a second value of the at least two values for the position of the drive shaft according to a second method, wherein the two methods differ from each other. This creates a diverse redundancy, which further increases operational safety.
- the two methods can, for example, be based on different technical or physical principles or use different hardware components.
- one of the at least two values for the position of the drive shaft is a first value for an absolute position of the drive shaft.
- another of the at least two values for the position of the drive shaft is a second value for an absolute position of the drive shaft.
- one of the at least two values for the position of the drive shaft is an incremental value for a position of the drive shaft or a value for a relative position of the drive shaft.
- the first and / or the second value for the absolute position can then be compared by the control unit with the incremental or relative value, whereby the plausibility of the first and / or second value for the absolute position can be checked.
- the control unit can transmit the control signal to the power unit in order to initiate the safety measure.
- the feedback system is set up to determine a rotor position of the motor and to determine one of the at least two values for the position of the drive shaft as a function of the rotor position.
- the rotor position is an angular range in which a rotor of the motor is located, optionally combined with a number of complete rotations of the rotor.
- the position or absolute position of the motor shaft can thus be determined precisely to at least 180 °, for example by the control unit.
- the control unit By gear reduction by means of one or more Ge, the resulting accuracy of the position of the drive shaft is significantly greater.
- the evaluation by the control unit corresponds to a certain extent to a virtual transmitter function. Even in the event of a complete failure of an absolute value transmitter of the feedback system, at least one emergency operation can therefore be maintained and / or the switch can be brought into a safe position.
- the feedback system includes an absolute value transmitter which is set up and arranged to detect the absolute position of the drive shaft or an absolute position of a further shaft connected to the drive shaft and to output at least one output signal based on the detected position produce.
- the feedback system is set up to determine one of the at least two values for the position of the drive shaft, in particular the first and / or the second value for the absolute position, using the at least one output signal.
- the absolute encoder is attached directly or indirectly to the motor shaft, the drive shaft or a shaft coupled to it.
- the absolute encoder has a first output for outputting the first or second value for the absolute position and a second output for outputting the incremental or relative value for the position.
- absolute encoder includes both devices that determine two values for the position in different ways, that is to say devices that contain two separate encoders, at least one of which is an absolute encoder.
- the absolute value encoder comprises a multiturn rotary encoder.
- the absolute value encoder is set up to detect the position of the drive shaft or the position of the further shaft using a first scanning method.
- the absolute encoder is set up to additionally detect the position of the drive shaft or the position of the further shaft using a second scanning method which is independent of the first scanning method.
- the first or the second scanning method includes an optical, a magnetic, a capacitive, a resistive or an inductive scanning method.
- the first scanning method differs from the second scanning method.
- the absolute encoder is form-fitting with the Drive shaft, the motor shaft or the other shaft connected.
- the absolute encoder is additionally connected to the drive shaft, the motor shaft or the further shaft in a force-locking or material-locking manner, for example by means of an adhesive connection.
- the form-fitting and additionally material or force-fitting connection further increases the attachment of the absolute encoder and ultimately the operational reliability.
- the programmable safety controller refers to a controller which contains two processor units, in particular two programmable logic controllers, PLCs.
- the two processor units use the same process image of inputs and outputs of the control unit which process a user program stored in the control unit in parallel.
- the user program contains a multiplicity of instructions. If the instructions are carried out by the control unit, this results in the control of the power unit as a function of the setpoint. This drives the motor and ultimately the switch to carry out one or more operations, for example a switchover between two winding taps of an item of equipment or parts of the switchover, such as a load switchover, a selector actuation or a switch that is designed as an on-load tap-changer Before voting.
- a switchover between two winding taps of an item of equipment or parts of the switchover such as a load switchover, a selector actuation or a switch that is designed as an on-load tap-changer Before voting.
- control unit includes a first and a second processor unit.
- the control unit is set up to process a program, in particular the user program, to implement a switching command for the switch, the first and second processor units processing the program in parallel.
- programmable safety controller as a control unit and the associated redundancy increases the operational reliability of the switch arrangement.
- control unit is set up to carry out at least one comparison between the first and the second processor unit, in particular a continuous comparison, while the program is being processed.
- the comparison includes a comparison, in particular a cyclical comparison, of a process image of the first processor unit a process image of the second processor unit.
- control unit is set up to initiate a further security measure as a function of a result, in particular in the case of a negative result of the at least one adjustment or comparison of the process images.
- the safety measure or the further safety measure includes a safe shutdown of the motor, a blocking or shutdown of the power section or a triggering of a circuit breaker that connects or disconnects the operating medium to an energy network.
- the safe stopping of the motor takes place in particular such that the switch is in a safe position after the safe stop.
- the initiation of the safety measure includes the output of at least one safety signal.
- the safe stopping of the motor includes a safety function which corresponds to a stop category according to the industrial standard EN 60204-1: 2006, the content of which is hereby incorporated by reference.
- the safe stopping of the motor includes a safe torque-off, STO, safety function, safe-stop-1, SS1, safety function, safe-stop-2, SS2, safety function, or safe-operation-stop , SOS, safety function.
- hardware of the first processor unit differs from hardware of the second processor unit.
- control unit is set up to check a locking condition of two or more components of the switch arrangement.
- the components of the switch arrangement can include components of the switch, for example, in the case of a switch that is designed as an on-load tap changer, a selector, a preselector, a polarity circuit or a load switch of the on-load tap changer.
- the components of the switch assembly may also include components that are not Part of the switch are, in particular, components of another switch of the switch arrangement or another switching component of the switch arrangement.
- components of another switch of the switch arrangement In the case of two switches, which are designed as on-load tap-changers, they can be, for example, on-load tap-changers for different phases of the energy network.
- the other switching components can include, for example, a diverter, a double turner or an advanced retard switch, ARS.
- the locking condition can correspond to a specification that one of the components may only be operated or may not be operated when another of the components is in a certain state, for example a certain position, a certain switching state or a certain movement state .
- control unit is set up to initiate the security measure depending on a result, in particular in the case of a negative result of the check of the locking condition.
- the switch arrangement e.g. if this is an on-load tap-changer, a diverter switch, a selector, a double reverser, a reverser, a preselector, a circuit breaker, a load switch or a disconnector, assigned to an electrical equipment, such as a power transformer or a phase shift transformer.
- control unit has inputs and outputs, which are designed as clocked inputs or outputs.
- control unit is set up to check the presence of a cross circuit using input signals that are present at the inputs and / or using output signals that are present at the outputs.
- a short circuit between connecting lines of two adjacent inputs or outputs is called a cross circuit.
- the control unit is set up to initiate the further safety measure as a function of a result of the test, in particular if there is a cross circuit.
- the power unit is designed to bring the motor to a standstill, in particular to safely shut it down, by a first of the at least one safety measures.
- the standstill can also include a movement within a defined tolerance range.
- the safe stopping of the motor includes a safety function which corresponds to a stop category according to the industrial standard EN 60204-1: 2006, the content of which is hereby incorporated by reference.
- the safe stopping of the motor includes a safe torque-off, STO, safety function, safe-stop-1, SS1, safety function, safe-stop-2, SS2, safety function, or safe-operation-stop , SOS, safety function.
- the safety measure includes the monitoring of a movement or a position of the motor, in particular a motor shaft of the motor.
- the monitoring of the movement of the motor includes a Safely-Limited-Speed, SLS, safety function, a Safe-speed-monitor, SSM, safety function, a Safe-speed-range, SSR, safety function, a Safe-Iimit position, SLP, safety function, a safe position, SP, safety function or a safe direction, SDI, safety function.
- the first safety measure includes an uncontrolled shutdown of the motor.
- the power unit is set up to completely interrupt the power supply to the motor as a function of the control signal.
- the first security measure includes immediately or immediately interrupting the energy supply. The energy supply remains in the Motor standstill interrupted so that it can no longer provide torque (corresponds to STO).
- the power unit is set up to brake or shut down the motor in a controlled manner, depending on the control signal.
- the power supply to the motor is maintained during this time.
- the power unit is set up to completely interrupt the power supply of the motor, depending on the control signal after the controlled braking or stopping, so that it can no longer provide torque (corresponds to SS1).
- the power unit is set up to maintain the power supply of the motor depending on the control signal after the controlled braking or stopping and to regulate a position of the motor, in particular the motor shaft, to a target position (corresponds to SS2).
- the power unit is set up to initiate a further safety measure, in particular comprising an STO or an SS1 safety function, if a tolerance range is violated with respect to the target position.
- the power part is set up to limit a speed or rotational speed of the motor shaft by a second of the at least one safety measure.
- the power section is set up to restrict the speed in such a way that the speed is less than or equal to a predetermined maximum speed (corresponds to SLS or SSR).
- the power unit is set up to restrict the speed in such a way that the speed is greater than or equal to a predetermined minimum speed (corresponds to SSM or SSR).
- the power unit is set up to initiate a further safety measure, in particular comprising an STO or an SS1 safety function, when the maximum speed is exceeded or the minimum speed is not reached.
- a further safety measure in particular comprising an STO or an SS1 safety function
- the at least one safety-relevant event comprises a deviation of a direction of rotation of the motor, the motor shaft or a further shaft of the switch arrangement from a predetermined target direction of rotation (corresponds to SDI).
- the direction of rotation is detected by the feedback system, in particular a transmitter device of the feedback system, for example the absolute value transmitter.
- control unit is set up to generate the control signal as a function of the feedback signal.
- the at least one safety-relevant event occurs when the absolute position of the motor shaft or the further shaft falls below a predetermined minimum position or exceeds a predetermined maximum position (corresponds to SLP).
- the at least one safety-relevant event occurs when the first and the second value for the absolute position of the drive shaft differ significantly from one another.
- the control unit can compare the first and the second value for the absolute position of the drive shaft with one another.
- Figure 1 is a schematic representation of an exemplary embodiment of a
- FIG. 2 shows a schematic representation of a further exemplary embodiment of a switch arrangement according to the improved concept.
- FIG. 1 shows a schematic representation of an exemplary embodiment of a switch arrangement 1 according to the improved concept with a switch 17 and a Servo drive system 2, which is connected to switch 17 via a drive shaft 16.
- the servo drive system 2 includes a motor 12 which can drive the drive shaft 16 via a motor shaft 14 and optionally via a gearbox 15.
- a control device 3 of the servo drive system 2 comprises a power unit 1 1, which contains, for example, a servo converter, for the controlled or regulated energy supply of the motor 12 and a control unit 10 for controlling the power unit 1 1, for example via a bus 18.
- the servo drive system 2 can have an encoder system 13 which serves as a feedback system 4 or is part of the feedback system and is connected to the power unit 11. Furthermore, the encoder system 13 is coupled directly or indirectly to the drive shaft 16.
- the encoder system 13 is set up to detect a value for a position, in particular an angular position, for example an absolute angular position, of the drive shaft 16 and to generate a feedback signal based thereon.
- the encoder system 13 can include an absolute encoder, in particular a multi-turn absolute encoder, which is attached to the drive shaft 16, the motor shaft 14 or another shaft whose position is clearly linked to the absolute position of the drive shaft 16.
- the position of the drive shaft 16 can be clearly determined from the position of the motor shaft 14, for example via a transmission ratio of the transmission 15.
- the attachment of the absolute value encoder is designed, for example, as a combination of a form-fitting connection with a non-positive or material connection.
- the feedback system is also set up to detect a second value for the position of the drive shaft 16.
- the encoder system 13 can be set up to detect the second value, in particular using a method which differs from a method according to which the first value for the position of the drive shaft 16 is detected.
- control device 3 can be set up to determine the second value from a rotor position of the motor 12, that is to say effectively have a virtual encoder for detecting the second value.
- a virtual encoder for detecting the second value.
- an inductive feedback through the movement of the rotor in the motor windings of the motor 12 can be used. Since the strength of the feedback varies periodically, the rotor position can be determined approximately by means of signal analysis, for example FFT analysis. Since a full revolution of the drive shaft 16 of a plurality of revolutions of the rotor, the position of the drive shaft 16 can be inferred therefrom with much greater accuracy.
- the control device 3 in particular the control unit 10 and / or the power unit 11, is set up to control or regulate the motor 12, depending on a feedback signal which the feedback system 4 generates based on the first and the second value.
- the control device 3 for example the control unit 10, can for example compare the values for the position of the drive shaft 16 and / or carry out a plausibility check of the position determination.
- the control unit 10 is designed as a programmable safety controller and includes, for example, a first and a second programmable logic controller 6, 7. To implement a switching command for the switch, the programmable logic controllers 6, 7, for example, execute a program in parallel.
- the programmable logic controllers 6, 7 can synchronize one another, in particular cyclically or continuously.
- the comparison can include, for example, a comparison of calculation results, checksums or the like.
- the programmable logic controllers 6, 7 contain different hardware components or are designed as different types or models.
- Inputs and outputs of the control unit 10 can be performed as clocked inputs and outputs.
- the control unit 10 can recognize clock deviations on the basis of a comparison of an input signal with an output signal, for example deviations in period durations or edges of the signals.
- Cross-circuits for example, can be detected based on the clock deviations.
- the control unit 10 can identify the presence of a safety-relevant event, for example a malfunction or an error in the switch 17 or in the drive system. If there is a safety-relevant event, the control unit 10 transmits a control signal to the power unit 1 1, which then initiates or executes a safety measure.
- a safety-relevant event for example a malfunction or an error in the switch 17 or in the drive system.
- FIG. 2 shows a schematic representation of a further exemplary embodiment a switch arrangement 1 according to the improved concept, which is based on the embodiment of FIG.
- the switch arrangement 1 here optionally has a switch cabinet 21, within which the control unit 10, the power unit 11 and an optional man-machine interface 19 are arranged.
- the man-machine interface 19 is connected to the control unit 10 and can, for example, serve for control, maintenance or configuration purposes.
- the motor 12, the motor shaft 14, the encoder system 13 and / or the gear 15 can be arranged inside or outside the control cabinet 21.
- the switch arrangement 1, in particular the control unit 10, is coupled to a safety device 20, which includes, for example, a power switch or circuit breaker in order to disconnect the switch arrangement 1 or electrical equipment to which the switch arrangement 1 is assigned from an energy network, for example in the event of a fault or malfunction of the switch arrangement 1.
- a safety device 20 which includes, for example, a power switch or circuit breaker in order to disconnect the switch arrangement 1 or electrical equipment to which the switch arrangement 1 is assigned from an energy network, for example in the event of a fault or malfunction of the switch arrangement 1.
- a switch arrangement 1 By a switch arrangement 1 according to the improved concept, the operational safety of the servo drive system, the switch and the operating means is increased. This is achieved in particular through the use of the programmable safety controller as a control unit and the associated redundancy, the initiation of the safety measure by the power unit and the double position determination.
Landscapes
- Control Of Electric Motors In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019112710.6A DE102019112710A1 (de) | 2019-05-15 | 2019-05-15 | Schalteranordnung mit antriebssystem |
| PCT/EP2020/061274 WO2020229119A1 (de) | 2019-05-15 | 2020-04-23 | Schalteranordnung mit antriebssystem |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP3963611A1 true EP3963611A1 (de) | 2022-03-09 |
| EP3963611B1 EP3963611B1 (de) | 2024-06-05 |
| EP3963611C0 EP3963611C0 (de) | 2024-06-05 |
Family
ID=70456774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20721207.7A Active EP3963611B1 (de) | 2019-05-15 | 2020-04-23 | Schalteranordnung mit antriebssystem |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11894204B2 (de) |
| EP (1) | EP3963611B1 (de) |
| CN (1) | CN113853664B (de) |
| DE (1) | DE102019112710A1 (de) |
| WO (1) | WO2020229119A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019220444B4 (de) * | 2019-12-20 | 2021-08-05 | Siemens Aktiengesellschaft | Fernantrieb und Parametrier-Verfahren |
| CN112406548B (zh) * | 2020-12-07 | 2024-10-29 | 秦涛 | 一种电动汽车、应急行车控制装置及方法 |
| GB2609423A (en) * | 2021-07-29 | 2023-02-08 | Nortech Man Ltd | Switch gear controller |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR9909905B1 (pt) * | 1998-04-03 | 2012-12-11 | operador para uma chave aérea de energia elétrica e método de operação de uma chave de energia elétrica aérea. | |
| AU2554399A (en) * | 1998-12-16 | 2000-07-03 | Abb Ab | Operating device for driving and controlling an electrical switching apparatus |
| DE19963256C1 (de) * | 1999-12-17 | 2001-05-23 | Siemens Ag | Hochspannungs-Leistungsschalter |
| DE10235502C1 (de) | 2002-08-02 | 2003-12-24 | Siemens Ag | Vorrichtung und Verfahren zur sicheren Schalterstellungserkennung eines Drehschalters |
| WO2005073992A1 (en) * | 2004-01-30 | 2005-08-11 | Abb Technology Ltd. | Condition monitor for an electrical distribution device |
| ATE463039T1 (de) * | 2005-07-13 | 2010-04-15 | Siemens Ag | Antriebsmechanismus und schaltverfahren für ein schaltgerät |
| WO2008024048A1 (en) | 2006-08-25 | 2008-02-28 | Abb Technology Ltd | Electric motor drive unit for on-load tap-changers |
| BR112013024908B1 (pt) * | 2011-03-27 | 2021-02-17 | Abb Schweiz Ag | comutador de derivação em carga para comutar derivações em um enrolamento de um transformador |
-
2019
- 2019-05-15 DE DE102019112710.6A patent/DE102019112710A1/de active Pending
-
2020
- 2020-04-23 US US17/611,210 patent/US11894204B2/en active Active
- 2020-04-23 CN CN202080035463.5A patent/CN113853664B/zh active Active
- 2020-04-23 WO PCT/EP2020/061274 patent/WO2020229119A1/de not_active Ceased
- 2020-04-23 EP EP20721207.7A patent/EP3963611B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020229119A1 (de) | 2020-11-19 |
| DE102019112710A1 (de) | 2020-11-19 |
| CN113853664A (zh) | 2021-12-28 |
| EP3963611B1 (de) | 2024-06-05 |
| CN113853664B (zh) | 2026-02-03 |
| US11894204B2 (en) | 2024-02-06 |
| US20220216015A1 (en) | 2022-07-07 |
| EP3963611C0 (de) | 2024-06-05 |
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